CN1862245A - Checking device of the gear-driving balancer - Google Patents
Checking device of the gear-driving balancer Download PDFInfo
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- CN1862245A CN1862245A CN 200610081963 CN200610081963A CN1862245A CN 1862245 A CN1862245 A CN 1862245A CN 200610081963 CN200610081963 CN 200610081963 CN 200610081963 A CN200610081963 A CN 200610081963A CN 1862245 A CN1862245 A CN 1862245A
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- toothed wheel
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Abstract
The disclosed detector for a gear-drive balancer comprises: a driver (16)) to rotate the crankshaft (3), a engagement regulation device (126) for balance gear (17) and crankshaft gear (4), the detector (124, 154) for rotation angle of axes (3, 17), an axial displacement detector (123) for balance axis (14), and a computation device for gear gap between (17) and (4). This invention is well precise.
Description
Technical field
The present invention relates to a kind of testing fixture of gear-driving balancer.
Background technology
4 known in the past Cylinder engines, be provided with the balancing shaft of the unbalance mass, of weighing apparatus mutually that has with the caused inertial force of past complex inertia mass of piston, connecting rod etc., and moving 1 week of bent axle revolution then balancing shaft rotated for 2 weeks, (for example Japanese documentation 1: No. the 2876819th, Japanese patent gazette) can to eliminate the vibration of the caused connecting rod of above-mentioned imbalance etc. and noise thus.In order to realize the power transmission between balancing shaft and the connecting rod, shrinkage assembling (shrink fit) has crankshaft toothed wheel on bent axle, and balancing shaft is provided with the balance gear that meshes with crankshaft toothed wheel simultaneously.
, improper if the backlash between crankshaft toothed wheel and the balance gear (back lash) is set, the generation of gear strike note will appear causing because of backlash is excessive, the generation of the engagement sound that causes because of the gap is too small.At this, Japanese documentation 1 discloses the assay method that is used for appropriately setting backlash, the rotation of any one party in its restriction crankshaft toothed wheel and balance gear, and the amount of movement that moved with the equivalent diameter (equivalent diameter) of pitch circle (gear pitch circle) of the gear by dial ga(u)ge (dial indicator) measurement the opposing party.
Above-mentioned patent documentation 1 disclosed technology, owing to limited the rotation of any one party in crankshaft toothed wheel and the balance gear, so can't check to whole tooth surface.Therefore, can't detect gear with check unusual on the phase place that the position mistake staggers.In addition, owing to check it is handwork, so the activity duration is longer, and also the result who detects also has deviation.
Summary of the invention
The present invention does in view of the above problems, and its purpose is to provide a kind of can check the testing fixture of the gear-driving balancer of crankshaft toothed wheel and balance gear meshing state rapidly and accurately at whole flank of tooth.
The testing fixture of gear-driving balancer of the present invention is meshed helical gear crankshaft toothed wheel that is arranged on the bent axle and the helical gear balance gear that is arranged on the balancing shaft, and it comprises the driving mechanism that bent axle is rotated; Can in driven direction that is driven in crankshaft toothed wheel and anti-driven direction, select a ground and adjust the mesh adjusting mechanism of the engagement of balance gear and crankshaft toothed wheel; Detect the crank angle degree pick-up unit of the angle of rotation of bent axle; Detect the balancing shaft rotation angle detecting device of the angle of rotation of balancing shaft; Detect the axially movable axial displacement measuring device of balancing shaft; The engagement of adjusting balance gear and crankshaft toothed wheel with the rotation number of regulation by any one party in above-mentioned driven direction and the anti-driven direction switches to other direction afterwards, controls the control device of mesh adjusting mechanism with this; During control device control mesh adjusting mechanism, the displacement that angle of rotation that is detected according to crank angle degree pick-up unit and balancing shaft rotation angle detecting device and axial displacement measuring device are detected, the calculation apparatus of the backlash of calculation balance gear and crankshaft toothed wheel.
Adopt the testing fixture of said gear drive-type evener, can pass through the drive mechanism bent axle, detect the angle of rotation of bent axle and balancing shaft by crank angle degree pick-up unit and balancing shaft rotation angle detecting device, calculate backlash automatically by calculation apparatus.And, in order to calculate backlash, adjust after the engagement of balance gear and crankshaft toothed wheel with the rotation number of regulation by any one party in above-mentioned driven direction and the anti-driven direction, switch to another direction, control mesh adjusting mechanism with this by control device, so not only can carry out the automatic calculation of backlash, and can detect the backlash between two gears at the flank of tooth of the complete cycle of crankshaft toothed wheel and balance gear.In addition, owing to be provided with the axially movable axial displacement measuring device that detects balancing shaft, and calculation during backlash with the moving axially also of balancing shaft, so, also can carry out the higher backlash calculation of precision even when constituting crankshaft toothed wheel and balance gear with spiral gear as the input factor.
In the testing fixture of said gear drive-type evener, comparatively it is desirable to, above-mentioned mesh adjusting mechanism, when balance gear and crankshaft toothed wheel engagement, can come the driven equilibrium axle by the floating junction (floating joint) that allows balancing shaft to produce axial displacement, above-mentioned balancing shaft rotation angle detecting device can be by the angle of rotation of this floating junction detection balancing shaft.
Adopt the testing fixture of said gear drive-type evener, the axial displacement measuring device can be measured moving axially of balancing shaft with higher dimensional accuracy.
In the testing fixture of gear-driving balancer, comparatively it is desirable to, above-mentioned crank angle degree pick-up unit, can by with above-mentioned floating junction be the angle of rotation that the floating junction of same specification detects bent axle.
Adopt the testing fixture of said gear drive-type evener, when detecting the angle of rotation of bent axle, can detect angle of rotation by the transmission condition identical, can improve accuracy of detection thus with balancing shaft.
In the testing fixture of said gear drive-type evener, comparatively it is desirable to, also can comprise and adjust the pad selecting apparatus, according to the selected adjustment pad of adjusting the balancing shaft installation site of the backlash that calculation apparatus calculated.
Adopt the testing fixture of said gear drive-type evener,, can select suitable adjustment pad, and exported (demonstration) according to the backlash that is calculated out.
In the testing fixture of said gear drive-type evener, comparatively it is desirable to, above-mentioned adjustment pad selecting apparatus, adjusting pad chip size in the time of can measuring backlash is a benchmark, calculate out correction from the minimum value of backlash, and according to the correction of calculating with as the difference between the above-mentioned adjusting pad chip size of benchmark, selected only adjustment pad.
Adopt the testing fixture of said gear drive-type evener,, more suitably adjust pad so can select because the adjusting pad chip size when measuring backlash is that benchmark select the adjustment pad.
In the testing fixture of said gear drive-type evener, comparatively it is desirable to, can comprise that also storage carries out the database of data of a plurality of adjustment pads of grade classification with size, above-mentioned adjustment pad selecting apparatus, can suppose the selected pad of adjusting from above-mentioned database, the backlash of measuring when the particular rotation angle that diminishes at backlash is with the difference of the fixed backlash minimum value of institute side during smaller or equal to predefined permissible value, change the selected adjustment pad grade of hypothesis, and make backlash become big.
Adopt the testing fixture of said gear drive-type evener, the backlash of measuring when the specific rotational angle that diminishes at backlash, with the difference of the backlash minimum value of being measured during smaller or equal to the permissible value of regulation, can select beguine and more suitably adjust pad according to the selected adjustment pad of minimum value hypothesis, the actual backlash in the time of can making engine operation is more reasonable.
In the testing fixture of said gear drive-type evener, comparatively it is desirable to, also can comprise abnormal detector, during control device control mesh adjusting mechanism, can detect unusually according to the angle of rotation that crank angle degree pick-up unit and balancing shaft rotation angle detecting device are detected.
Adopt the testing fixture of said gear drive-type evener, not only can detect backlash, and can detect no abnormal respectively at the full week of two gears.As abnormal morphology, for example comprise that profile of tooth is unusual, shaft vibration is unusual, and it is selected unusual etc. to adjust pad.
The testing fixture of another gear-driving balancer of the present invention can make crankshaft toothed wheel that is arranged on the bent axle and the balance gear that is arranged on the balancing shaft be meshed, and it comprises the driving mechanism that bent axle is rotated; Can in driven direction that is driven in crankshaft toothed wheel and anti-driven direction, select a ground and adjust the mesh adjusting mechanism of the engagement of balance gear and crankshaft toothed wheel; Detect the crank angle degree pick-up unit of the angle of rotation of bent axle; Detect the balancing shaft rotation angle detecting device of the angle of rotation of balancing shaft; The engagement of adjusting balance gear and crankshaft toothed wheel with the rotation number of regulation by any one party in above-mentioned driven direction and the anti-driven direction switches to another direction afterwards, controls the control device of mesh adjusting mechanism with this; During control device control mesh adjusting mechanism,, detect the unusual abnormal detector of balance gear and crankshaft toothed wheel according to the angle of rotation that crank angle degree pick-up unit and balancing shaft rotation angle detecting device are detected.
Adopt the testing fixture of said gear drive-type evener, can be by the drive mechanism bent axle, detect the angle of rotation of bent axle and balancing shaft by crank angle degree pick-up unit and balancing shaft rotation angle detecting device, and can automatically carry out abnormality detection at whole flank of tooth of balance gear and crankshaft toothed wheel.
In the testing fixture of said gear drive-type evener, comparatively it is desirable to, above-mentioned abnormal detector can be by the each driving error of calculation, and the profile of tooth that detects balance gear and crankshaft toothed wheel is unusual.
As mentioned above, adopt the present invention, can carry out abnormality detection automatically at the complete cycle of balance gear and crankshaft toothed wheel, so can check crankshaft toothed wheel and balance gear meshing state quickly and accurately at whole flank of tooth.
Description of drawings
Fig. 1 is a structural drawing of roughly representing the structure of one embodiment of the present invention.
Fig. 2 is the skeleton diagram of the installment state of the evener box of presentation graphs 1 roughly and engine.
Fig. 3 is the upward view of the related evener assembly of embodiment shown in Figure 1.
Fig. 4 is the side view of above-mentioned evener assembly.
Fig. 5 is the side view of the related crankshaft group of embodiment shown in Figure 1.
Fig. 6 is the structural drawing of the related Control Component of embodiment shown in Figure 1.
Fig. 7 is the synoptic diagram of pad grade complete list.
Fig. 8 is the process flow diagram that the backlash of expression scrutiny program detects the flow process of instruction group.
Fig. 9 is the chart of expression according to the measured driving error of the process flow diagram of Fig. 8.
Figure 10 is the process flow diagram of flow process of the backlash abnormality detection instruction group of expression scrutiny program.
Figure 11 is the process flow diagram of flow process of the profile of tooth abnormality detection instruction group of expression scrutiny program.
Figure 12 is the chart of TE value in the process flow diagram of expression Figure 11.
Figure 13 is the process flow diagram of flow process of the adjustment pad selection instruction group of expression scrutiny program.
Figure 14 is the process flow diagram of flow process of inspection instruction group of the chosen adjustment pad of expression scrutiny program.
Figure 15 is the process flow diagram of flow process of the rotation axis abnormality detection instruction group of expression scrutiny program.
Embodiment
Below, with reference to accompanying drawing, preferred forms of the present invention is described.
Fig. 1 is a structural drawing of roughly representing the structure of one embodiment of the present invention, and Fig. 2 is the skeleton diagram of the installment state of the evener box 10 of presentation graphs 1 roughly and engine 1.
See figures.1.and.2, the evener box 10 as checking object comprises having the housing 12 of 4 cylinders 11 (only illustrating 2 among Fig. 2); The one couple of balance 14,15 that rotation is freely supported in housing 12.Each balancing shaft 14,15 is freely supported by pair of bearings 12a (only illustrating in Fig. 1) rotation that is formed at housing 12.On each balancing shaft 14,15, be fixed with transmission gear 14a, 15a, by the engagement of each transmission gear 14a, 15a, balancing shaft 14,15 rotates with 1 to 1 rotation ratio.On each balancing shaft 14,15, be fixed with unbalance mass, 16 (one of them only is shown among Fig. 1).On a side balancing shaft 14, be fixed with the balance gear 17 that constitutes by spiral gear, its part is exposed from the bottom of housing 12.
For stable equilibrium device box 10, facial on the cylinder block 2 of engine 1, be formed with and make shrinkage be assemblied in the position that the crankshaft toothed wheel 4 on the bent axle 3 is opened, in order to make balance gear 17, also be provided with installation portion 5 in addition corresponding to each cylinder 11 in above-mentioned position and crankshaft toothed wheel 4 engagements.Evener box 10 is fixed on the engine 1 freely by being arranged on the screwhole spiro bonding of screw rod 21 and installation portion 5 on each cylinder 11, and can loading and unloading.At this moment, between the cylinder 11 of each installation portion 5 and evener box 10, be provided with and adjust pad 20, and adjust pad 20, adjust the backlash M of balance gear 17 and crankshaft toothed wheel 4 by this.
Fig. 3 is the upward view of the related evener assembly 110 of embodiment shown in Figure 1, and Fig. 4 is the side view of this evener assembly 110.
With reference to Fig. 1, Fig. 3, Fig. 4, evener assembly 110 has the top board 112 that hangs on pillar (stay) 111.On this top board 112, be connected with slide plate 114 by LM guide piece 113.This slide plate 114 by being installed in the cylinder 115 on the top board 112, can be driven along the length direction of LM guide piece 113.Between cylinder 115 and slide plate 114, be provided with and comprise helical spring damper (damper) 116.
Substantial middle position at slide plate 114 is fixed with bearing 117.This bearing 117 along the length direction of LM guide piece 113, rotates and supports rotation axis 118 freely.Side end at rotation axis 118 is equipped with floating junction 120, and the air spider (air chuck) 121 of the balancing shaft 14 of clamping evener box 10 is installed by this floating junction 120.
In the end side of rotation axis 118, swivel (rotary joint) 122 is installed, be used to supply with and open and close the required air of air spider 121.The forced air that this swivel 122 is supplied with is supplied to air spider 121 via the path that is formed in the rotation axis 118, with driven for opening and closing air spider 121.Controlled by Control Component 200 to the supply valve that swivel 122 is supplied with forced air.
Between floating junction 120 and air spider 121, be provided with electric vortex type displacement sensor 123, when air spider 121 was mobile vertically with respect to slide plate 114, electric vortex type displacement sensor 123 can detect its displacement.In the present embodiment, this electric vortex type displacement sensor 123 constitutes the axially movable axial displacement measuring device that detects balancing shaft 14.Shown in present embodiment, if crankshaft toothed wheel 4, balance gear 17 adopt spiral gear, when the gear contact, when between driven direction state and anti-driven direction state, changing according to engagement, because balancing shaft 14 is along axially being subjected to displacement, if so do not consider this displacement, the judgement of backlash M will produce bigger error.And, because the axial displacement of balancing shaft 14 is different because of product, so can't unify decision.So, in the present embodiment, detect the axial displacement of balancing shaft 14, and according to this axial displacement, the measured value of revisal backlash improves the degree of accuracy of measured value with this.
Between bearing 117 and swivel 122, be provided with rotary encoder (rotary encoder) 124, can detect the rotational angle of rotation axis 118.In the present embodiment, this rotary encoder 124 constitutes the balancing shaft rotation angle detecting device of the rotational angle that detects balancing shaft 14.
Between rotary encoder 124 and swivel 122, dispose pulley (pulley) 125, be fixed on the periphery of rotation axis 118.This pulley 125 is connected the output pulley 127 that is installed in the motor 126 on the slide plate 114 by pillar (not shown) by synchronous band (timing belt) 128.Above-mentioned rotation axis 118 is driven by motor 126.
When measuring, engine 1 is arranged on the testing fixture 100, be installed in the balancing shaft 14 of the evener box 10 on the engine 1, concentric and relative with rotation axis 118 with air spider 121.Under this state, make cylinder 115 running, by slide plate 114 air spider 121 elasticity are pressed to evener box 10, but air spider 121 clamping balancing shafves 14 thus.Its result, by the rotation of balancing shaft 14, rotation axis 118 rotates, and can detect its rotational angle by rotary encoder 124.On the other hand, driving by motor 126, moment of torsion (torque) is conveyed to balancing shaft 14 through rotation axis 118, floating junction 120 and air spider 121, and the engagement of balance gear 17 and crankshaft toothed wheel 4, can select a ground and adjust by driven direction that is driven in this crankshaft toothed wheel 4 (to call drive side drive side in the following text) and anti-driven direction (to call inoperative flank coastside in the following text).In the present embodiment, motor 126 constitutes mesh adjusting mechanism, can select the engagement of a ground adjustment gear 17 and crankshaft toothed wheel 4 at drive side and inoperative flank.
Fig. 5 is the side view of the related crankshaft group 140 of embodiment shown in Figure 1.
With reference to Fig. 1 and Fig. 5, crankshaft group 140 has the base plate of being fixed by pillar 141 142.This base plate 142 is connected with slide plate 144 by LM guide piece 143.Slide plate 144 by being installed in the cylinder 145 on the base plate 142, can be driven along the length direction of LM guide piece 143.Between cylinder 145 and slide plate 144, be provided with and comprise helical spring damper 146.
Substantial middle position at slide plate 144 is fixed with bearing 147.This bearing 147 supports rotation axis 148 freely along the length direction rotation of LM guide piece 143.Side end at rotation axis 148 is equipped with floating junction 150, and the air spider 151 of clamping bent axle 3 is installed by this floating junction 150.The specification of the floating junction 120 that is adopted in the floating junction 150, its specification and balancer device 110 is identical, adopts this floating junction 150, can detect the angle of rotation of bent axle 3 and the angle of rotation of balancing shaft 14 by identical transmission condition.
In the end side of rotation axis 148, swivel 152 is installed, be used to supply with the required air of driven for opening and closing air spider 151.The forced air that this swivel 152 is supplied to, the path via being formed in the rotation axis 148 is supplied to air spider 151, with driven for opening and closing air spider 151.Controlled by Control Component 200 to the supply valve that swivel 152 is supplied with forced air.
Between bearing 147 and swivel 152, be provided with rotary encoder 154, can detect the rotational angle of rotation axis 148.In the present embodiment, this rotary encoder 154 constitutes the crank angle degree pick-up unit of the rotational angle that detects bent axle 3, and is output as benchmark with this rotary encoder 154, by the driving error of Control Component 200 calculation bent axles 3 and balancing shaft 14.
When measuring, engine 1 is arranged on the testing fixture 100, then the bent axle 3 of this engine 1 is concentric and relative with air spider 151 with rotation axis 148.Under this state, make cylinder 145 running, by slide plate 144 air spider 151 elasticity are pressed to bent axle 3, but air spider 151 clamping bent axles 3 thus.Its result, by the rotation of bent axle 3, rotation axis 148 rotates, and can detect its rotational angle by rotary encoder 154.
Then, with reference to Fig. 1, the concrete structure of driven unit 160 is, gives the motor of controlling and driving by Control Component 200, constitutes the driving mechanism in the present embodiment thus.
Fig. 6 is the structural drawing of the related Control Component 200 of embodiment shown in Figure 1.
With reference to Fig. 6, Control Component 200 is the computers that comprise auxilary units such as main storage means such as CPU201, RAM202, ROM203, hard disk unit 204, keyboard 205, mouse 206, display 207, printer 208 etc.
Hard disk unit 204 is equipped with not shown relational database (relational database) system, and stores the pad grade complete list 210 that this relational database system is managed.This pad grade complete list 210 has attributes such as consecutive numbers, pad grade, nominal (Nominal) thickness, standard of tolerance.
Fig. 7 is the synoptic diagram of pad grade complete list 210.
As shown in Figure 7, pad grade complete list 210 defined pad grade Ssm are that unit has set 40 grades with 0.010mm.
And, in hard disk unit 204, scrutiny program 220 is installed, comprise the drive controlling program of the drive system of controlling each assembly 110 to 160; According to the calculation program of carrying out the calculation of backlash M from the output of sensor and rotary encoder; Detect the bad instruction groups such as the bad trace routine of profile of tooth of profile of tooth.
Fig. 8 is the process flow diagram that the backlash of expression scrutiny program 220 detects the flow process of instruction group.
With reference to Fig. 1, Fig. 8, in above structure, through what set as benchmark adjustment pad in advance, adjustment pad 20 with pad grade Ssm (No.46 among Fig. 7, pad grade Ssm=50), evener box 10 is installed on the engine 1, again engine 1 is installed on the testing fixture 100.
Then, for the engagement direction of determining measure (drive side, inoperative flank), n is defined as drv (step S1) with subscript (subscript), the driving (step S2) of beginning driven unit 160.At this moment, bent axle 3 is that the low speed of 60rpm rotates with the rotating speed.In step S1 because subscript n is defined as drv, so the motor 126 of evener assembly 110 with slowly run (or stopping), the backlash setting state of balance gear 17 is at drive side (step S3).Under this state, each rotary encoder 124,154 detects rotational angle, and the calculation instruction group of scrutiny program 220 is just calculated driving error Ec (step S4) from the detected value of two rotary encoders 124,154.And, the calculation instruction group of scrutiny program 220, the axial displacement x according to electric vortex type displacement sensor 123 is detected by following formula (1), (2), calculates the compensating value E of axial displacement
Amd(step S5).
Y＝x/tanα …(1)
E
amd＝Y/D*π …(2)
Wherein, Y: the displacement of rotation direction
α: the torsion angle of gear 4,17
D: the pitch diameter of balance gear 17
Afterwards, according to rotation driving error Ec that calculates out and revisal amount E
Amd, calculation measured value En (En=Ec+E
Amd) (step S6), and be saved to (step S7) in the storer at each rotational angle θ.
Then, whether scrutiny program 220 is differentiated driving mechanism 160 and is made bent axle 3 rotate 3 weeks (step S8), if discontented 3 weeks turn back to step S4 duplicate measurements and handle, if reached for 3 weeks, judges whether the measurement of inoperative flank finishes (step S9).If the measurement of inoperative flank does not finish, the subscript n of judging engagement is set at cst (step S10), and the motor 126 of high-speed driving evener assembly 110, the engagement of balance gear 17 shifted to the inoperative flank (step 11) turns back to step S4 then.
When the measurement of inoperative flank reached for 3 weeks, then by the judgement of step S8, S9, make driven unit 160 stop (step S12) running, and calculation backlash M (step S4), and on display 207, shown (step S15).
Fig. 9 is the icon of expression according to the measured driving error of the process flow diagram of Fig. 8.
As shown in Figure 9, according to above-mentioned process flow diagram,, calculate the driving error E of each crank angle degree respectively at drive side and inoperative flank
Drv, E
Cst, can accurately measure backlash M (M=E at the full week of balance gear 17 thus
Drv-E
Cst).
Figure 10 is the process flow diagram of flow process of the backlash abnormality detection instruction group of expression scrutiny program 220.
With reference to Figure 10, scrutiny program 220 comprises the instruction group of the backlash abnormality detection of carrying out each gear 4,17.This backlash abnormality detection is carried out after selected adjustment pad 20 has been installed.
In this instruction group, set (step S20) as the factor Bad_V that checks object.At this, " V " of Bad_V is variable, and unit is μ m.
Then, wait beginning to be measured (step S21),, just read the backlash M (θ) (step S22) of regulation rotational angle θ as measuring beginning.At this, as rotational angle θ, be suitably to set corresponding to the position of the shadow Ring that is subjected to Bu Ping Heng Quality amount 16, in the present embodiment, the inspection object comprises, in the engine actual operation, because of the Bu Ping Heng Quality amount 16 of rotating, near the engaging piece bit position of crankshaft toothed wheel 4 and balance gear 17, centrifugal action by Bu Ping Heng Quality amount 16 makes balance gear 17 near crankshaft toothed wheel 4, thereby make rotational angle θ=100 that backlash M (θ) is in hour °, 280 °, and other rotational angle.
Then, judge that at each rotational angle θ backlash M (θ) is whether in allowed band (step S23 to S25).Wherein, Bad_V
ALower limit to Bad_V
BHigher limit be the allowed band of the backlash M (θ) of 100 ° of degree of rotational angle and 280 °, Bad_V
CLower limit to Bad_V
DHigher limit be the allowed band of the backlash M (θ) of other rotational angles.
In step S23 to S25, if the backlash M (θ) of all rotational angle θ is in allowed band, just on display 207, show the information (step S26) of certified products,, show that then backlash M (θ) is unusual information (step S27) if when not satisfying certain condition.And, Bad_V
ALower limit be set at and compare Bad_V
CThe numerical value of the big ormal weight of lower limit, Bad_V
BHigher limit be set at and compare Bad_V
DThe numerical value of the big ormal weight of higher limit.In addition, consider in the engine actual operation that the backlash M (θ) of 100 ° of degree of rotational angle and 280 ° can further diminish, so the allowed band during above-mentioned inspection is set according to this situation.
As display packing, can show measured value at each rotational angle θ that checks object, if being qualified, measured value uses literal " qualified ", show judged result if exceed allowed band then use literal " defective " to wait.
So, in the present embodiment, can be when checking the full week of gear 4,17, at each rotational angle θ change inspection condition, carry out whether qualified judgement with desirable inspection condition.
Figure 11 is the process flow diagram of flow process of the profile of tooth abnormality detection instruction group of expression scrutiny program 220, and Figure 12 is the chart of TE value in the process flow diagram of Figure 11.
With reference to Figure 11, scrutiny program 220 comprises the instruction group of the profile of tooth abnormality detection of carrying out gear 4,17.This profile of tooth abnormality detection is carried out after selected adjustment pad 20 is installed.
In this instruction group, as the factor TE that checks object
BadSet (step S30).At this, TE
BadIt is the threshold value of judging that TE (Transfer Error) value is whether qualified.The TE value is obtained by each driving error value is carried out frequency analysis.
As mentioned above, during the backlash of prototype gear 4,17, as shown in figure 12, if each flank of tooth is all normal, detected TE value is less than setting.Otherwise the part of the flank of tooth occurs when unusual, and the TE value will increase to the multiple of the number of times that is equivalent to this flank of tooth.In the present embodiment, will carry out the threshold value of the whether qualified judgement of TE value, as TE
BadAnd stipulated, and detect the unusual of the flank of tooth in view of the above.
Then, wait beginning to be measured (step S31),, just calculate the TE value (step S32) of each time as measuring beginning.Then, judge that whether the TE value is at preset threshold TE
BadWith interior (step S33), if the threshold value TE that the TE value is setting
BadIn, just on display 207, show the information (step S34) of certified products, if the TE value has surpassed the threshold value TE that sets
Bad, just show the unusual information of profile of tooth (step S35).
Figure 13 is the process flow diagram of flow process of the adjustment pad selection instruction group of expression scrutiny program 220.
With reference to Figure 13, scrutiny program 220 has comprised the instruction group of answering selecteed adjustment pad when being selected in installation evener box 10.
In this instruction group, factor Msm, Mta, Rad, Bad_V are set (step S40).
Msm is as benchmark and the pad grade Ssm (with reference to Fig. 7) of selecteed adjustment pad 20 is 50 in the illustrated embodiment when measuring backlash.
Mta is that the backlash as target (is roughly the Bad_V of above-mentioned allowed band
CLower limit and Bad_V
DThe intermediate value of higher limit), unit is μ m.
Rad is a variable of adjusting a grade of pad 20, and unit is μ m.
Then, wait beginning to be measured (step S41),, just read the backlash M (θ) (step S42) of each rotational angle θ if measure beginning.
Then, calculate out pad grade adjustment amount ± Rv (step S43).In this step S43, according to following formula calculation pad grade adjustment amount ± Rv.
±Rv＝(Mmin-Mta)/Rad …(3)
Wherein, Mmin: the minimum value of measured backlash
Then, according to the pad grade adjustment amount ± Rv that calculates out, calculate suitable nominal thickness Rn (step S44).In this step S44, according to following formula calculation nominal thickness Rn.
Rn＝Rn(Msm)±Rv …(4)
Wherein, Rn (Msm): as the nominal thickness of the adjustment pad 20 (pad grade Ssm=50) of benchmark.
Then, retrieve pad grade complete list 210 shown in Figure 7, suppose selected and the immediate pad grade of nominal thickness value Ssm (step S45).
At this moment, Control Component 200 can be according to the selected suitable adjustment pad of measurement result.And, state in the choice when adjusting pad 20, select to adjust pad 20 under the state that is the backlash minimum value that detects making near above-mentioned backlash value Mta as target.Because the less side of the backlash of gear is bigger to the influence of gearing mesh noise, so need select to adjust pad according to the backlash minimum value that is detected.
In addition, in the present embodiment, consider when adjusting pad 20 and change to the selected pad grade Ssm of hypothesis, the possibility that existence changes backlash is changed because of the engagement (contacting state of tooth surface) of crankshaft toothed wheel 4 and balance gear 17, and in the engine real-world operation, become minimum rotational angle θ=100 ° in backlash M (θ), 280 ° can obtain suitable backlash M (θ), so whether improve the judgement of pad grade Ssm in step S46～49, thereby prevent in rotational angle θ=100 °, in the time of 280 °, because of the too small gearing mesh noise that produces of backlash M (θ).
That is, become minimum rotational angle θ=100 °, 280 °, judge the backlash equivalent value Bad_V whether backlash M (θ) is stipulating at backlash M (θ)
EWith interior (step S46, S47).This Bad_V
EBe according to Bad_V
AWith Bad_V
CThe value that sets of difference.If rotational angle θ=100 °, 280 ° the measured value of backlash M (θ), with the difference of the backlash minimum M min that is measured at Bad_V
EIn, consider that in the engine real work rotational angle θ=100 °, 280 ° backlash M (θ) can further diminish, and pad grade Ssm is promoted one-level and perform calculations (step S48).If rotational angle θ=100 °, 280 ° the measured value of backlash M (θ), exceed Bad_V with the difference of the backlash minimum M min that is measured
E, judge that then backlash M (θ) for suitably, then carries out the calculation (step S49) of keeping the selected pad grade Ssm of above-mentioned hypothesis.
Then, determine the calculation (step S50) of pad grade Ssm, final chosen pad grade Ssm is presented at (step S51) on the display 207.
So, in the present embodiment, can be according to the selected suitable adjustment pad 20 of the backlash M in full week of gear 4,17.
After having carried out adjusting pad 20 selected,, then temporarily engine 1 is unloaded down from testing fixture 100, and then evener box 10 is unloaded down from engine 1 if selected to adjust adjustment pad 20 beyond the pad 20 as benchmark.Then, use Control Component 200 selected pad grades to change benchmark and adjust pad 20, reinstall evener box 10 then, and check once more as the adjustment pad of Ssm.
Figure 14 is the process flow diagram of flow process of inspection instruction group of the chosen adjustment pad 20 of expression scrutiny program 220.
With reference to Figure 14, scrutiny program 220 includes the instruction group that selected adjustment pad 20 is checked.
At first, determine whether to utilize the data of the selected instruction group of adjustment pad of the flow process of carrying out Figure 13, check (flow process of Fig. 8) (step S60) once more.
Check if carry out, read backlash M (θ) (step S61), calculate out maximum backlash variable quantity ± Smaxv (step S62) by following formula at each rotational angle.
±Smaxv＝-{Rad*(Msm-Ssm)} …(5)
Then, according to the maximum backlash variable quantity ± Smaxv that calculates out, allow the maximum backlash amount Smax (step S63) of (prediction) by following formula calculation.
Smax＝Mmax±Smaxv …(6)
Wherein, Mmax: the maximum backlash that determines
Then, judge the backlash amount Bad_V whether maximum backlash amount Smax is stipulating
DWith interior (step S64), if within the limits prescribed, just on display 207, show qualified information (step S65), if exceeded the scope of regulation, show that then selected adjustment pad 20 has unusual information (step S66).
Thus, in the present embodiment, can judge whether the selection of adjustment pad 20 of evener box is qualified.
After having carried out adjusting pad 20 selected,, then temporarily engine 1 is unloaded down from testing fixture 100, and then evener box 10 is unloaded down from engine 1 if selected to adjust adjustment pad 20 beyond the pad 20 as benchmark.Then, use Control Component 200 selected pad grades to change benchmark and adjust pad 20, reinstall evener box 10 then, and check once more as the adjustment pad of Ssm.
Figure 15 is the process flow diagram of flow process of the rotation axis abnormality detection instruction group of expression scrutiny program 220.
With reference to Figure 15, scrutiny program 220 comprises the instruction group of the abnormality detection of carrying out balancing shaft 14.This abnormality detection is carried out after selected adjustment pad 20 has been installed.
In this instruction group, set (step S70) as the factor Δ Bad_V that checks object.Δ Bad_V is the backlash variable quantity of regulation.
Then, wait beginning to be measured (step S71),, just read the backlash M (θ) (step S72) of each rotational angle θ if measure beginning.
Then, judge that the maximal value Mmax of measured backlash M (θ) and the difference between the minimum M min are whether less than the backlash variation delta Bad_V (step S73) of regulation, if the difference between maximal value Mmax and the minimum M min is less than the backlash variation delta Bad_V of regulation, just on display 207, show qualified information (step S74), if the difference between maximal value Mmax and the minimum M min, just shows to have the unusual information of shaft vibration (step S75) greater than the backlash variation delta Bad_V of regulation.
So, present embodiment can check that to the full Zhou Jinhang of gear 4,17 it is unusual to detect shaft vibration simultaneously.
As mentioned above, present embodiment drives bent axle 3 by driven unit 160, and rotary encoder 154 and the rotary encoder 124 detection bent axles 3 of balancing shaft 14 and the rotational angle θ of balancing shaft 14 by bent axle 3 can calculate backlash M automatically by Control Component 200.And, in order to calculate backlash M, by Control Component 200 control motor 126, after drive side is adjusted the engagement of balance gear 17 and crankshaft toothed wheel 4 with the rotation number of regulation, switch to the inoperative flank, so not only can carry out the automatic calculation of backlash M, and can detect the backlash M between two gears 4,17 at the full week of crankshaft toothed wheel 4 and balance gear 17.In addition, owing to be provided with the electric vortex type displacement sensor 123 of the axial displacement that detects balancing shaft 14, and moving axially balancing shaft 14 during calculation backlash M also as the input factor, even so when constituting crankshaft toothed wheel 4 and balance gear 17, also can carry out the higher backlash M calculation of precision with spiral gear.
And, in the present embodiment, motor 126 is when balance gear and crankshaft toothed wheel engagement, can come driven equilibrium axle 14 by the floating junction 120 that allows balancing shaft 14 axial displacements, and rotary encoder 124 can detect the angle of rotation of balancing shaft 14 by this floating junction 120.Therefore, in the present embodiment, electric vortex type displacement sensor 123 can detect moving axially of balancing shaft 14 with higher dimensional accuracy.
And in the present embodiment, the rotary encoder 154 of above-mentioned bent axle 3 can be by detecting the angle of rotation of bent axle 3 with above-mentioned floating junction 120 for the floating junction 150 of same specification.Therefore, when detecting the angle of rotation of bent axle 3, can detect angle of rotation, can improve accuracy of detection thus with the transmission condition identical with balancing shaft 14.
And, in the present embodiment,, constituted the backlash M that is calculated according to Control Component 200 by Control Component 200, select the adjustment pad selecting apparatus (with reference to Figure 13) of the adjustment pad 20 of the installation site of adjusting balancing shaft 14.Therefore,, can select suitable adjustment pad 20, and be exported (demonstration) according to the backlash M that calculates out.
And, in the present embodiment, above-mentioned adjustment pad selecting apparatus, adjusting pad chip size in the time of can measuring backlash is a benchmark, minimum value calculation correction from backlash M, and according to the correction of calculating out with as the difference between adjustment pad 20 sizes of benchmark, selected only adjustment pad.Therefore, the size of the adjustment pad 20 during according to detection backlash M is selected and is adjusted pad 20, can select and more suitably adjust pad 20.
And, in the present embodiment, be provided with storage and carry out the pad grade complete list 210 of a plurality of adjustment pads 20 of grade classification with size, above-mentioned adjustment pad selecting apparatus can be supposed the selected pad 20 of adjusting from above-mentioned pad grade complete list 210, the backlash M (θ) of the particular rotation angle θ that diminishes as backlash M,, change the selected pad grade Ssm of hypothesis, and make backlash M become big during with the difference of the minimum value of backlash M smaller or equal to predefined permissible value.Therefore, the backlash M (θ) of the specific rotational angle θ that diminishes as backlash M, with the difference of the minimum value of backlash M during less than the allowance of regulation, can select beguine and more suitably adjust pad 20, and the actual backlash can make engine operation the time is more reasonable according to the selected adjustment pad 20 of minimum value hypothesis.
And, in the present embodiment, by Control Component 200, constituted during the control of motor 126 Be Controlled assemblies 200, the rotational angle θ that can be detected according to the rotary encoder 124 of the rotary encoder 154 of bent axle 3 and balancing shaft 14 detects unusual abnormal detector (with reference to Figure 11, Figure 14, Figure 15).Therefore, not only can detect backlash M, can also have or not that backlash is unusual at detecting respectively in the full week of gear 4,17, that profile of tooth is unusual, select that pad is unusual, shaft vibration is unusual etc. is unusual.
Above-mentioned embodiment is a comparatively desirable object lesson of the present invention, but the present invention is not limited to above-mentioned embodiment.
For example, in each instruction group of the scrutiny program shown in Fig. 8 to Figure 15 220, be theoretic classification, its operation order and each step comprehensive/separate, can be according to the truth of program and suitably change.
In addition, in purport scope of the present invention, can carry out various changes.
Claims (10)
1. the testing fixture of a gear-driving balancer makes to be arranged on being meshed by spiral gear crankshaft toothed wheel that constitutes and the balance gear that is made of spiral gear that is arranged on the balancing shaft on the bent axle, it is characterized in that comprising:
The driving mechanism that bent axle is rotated;
Can in driven direction that is driven in crankshaft toothed wheel and anti-driven direction, select a ground and adjust the mesh adjusting mechanism of the engagement of balance gear and crankshaft toothed wheel;
Detect the crank angle degree pick-up unit of the angle of rotation of bent axle;
Detect the balancing shaft rotation angle detecting device of the angle of rotation of balancing shaft;
Detect the axially movable axial displacement measuring device of balancing shaft;
The engagement of adjusting balance gear and crankshaft toothed wheel with the rotation number of regulation by any one party of above-mentioned driven direction and anti-driven direction switches to other direction afterwards, controls the control device of mesh adjusting mechanism with this;
At mesh adjusting mechanism controlled device control period, according to angle of rotation and the measured displacement of axial displacement measuring device that crank angle degree pick-up unit and balancing shaft rotation angle detecting device are detected, the calculation apparatus of the backlash of calculation balance gear and crankshaft toothed wheel.
2. the testing fixture of gear-driving balancer according to claim 1 is characterized in that:
Above-mentioned mesh adjusting mechanism when balance gear and crankshaft toothed wheel engagement, comes the driven equilibrium axle by the floating junction that allows balancing shaft to produce axial displacement,
Above-mentioned balancing shaft rotation angle detecting device detects the angle of rotation of balancing shaft by above-mentioned floating junction.
3. the testing fixture of gear-driving balancer according to claim 2 is characterized in that:
Above-mentioned crank angle degree pick-up unit, by with above-mentioned floating junction be the angle of rotation that the floating junction of same specification detects bent axle.
4. according to the testing fixture of any described gear-driving balancer in the claim 1 to 3, it is characterized in that:
Also comprise and adjust the pad selecting apparatus, according to the selected adjustment pad of adjusting the balancing shaft installation site of the backlash that calculation apparatus calculated.
5. the testing fixture of gear-driving balancer according to claim 4 is characterized in that:
Above-mentioned adjustment pad selecting apparatus, adjustment pad during with the mensuration backlash is of a size of benchmark, calculate out correction from the minimum value of backlash, and according to the correction of being calculated with as the difference between the size of the above-mentioned adjustment pad of benchmark, selected only adjustment pad.
6. the testing fixture of gear-driving balancer according to claim 5 is characterized in that:
Comprise that also storage carries out the database of data of a plurality of adjustment pads of grade classification with size,
Above-mentioned adjustment pad selecting apparatus, the selected pad of adjusting of hypothesis from above-mentioned database, the backlash of measuring when the particular rotation angle that diminishes at backlash, with the difference of the backlash minimum value of being measured during smaller or equal to predefined permissible value, change the grade of the selected adjustment pad of hypothesis, make backlash become big.
7. according to the testing fixture of any described gear-driving balancer in the claim 1 to 3, it is characterized in that:
Also comprise abnormal detector, during control device control mesh adjusting mechanism, the angle of rotation that is detected according to crank angle degree pick-up unit and balancing shaft rotation angle detecting device detects unusually.
8. the testing fixture of gear-driving balancer according to claim 4 is characterized in that:
Also comprise abnormal detector, during control device control mesh adjusting mechanism, the angle of rotation that is detected according to crank angle degree pick-up unit and balancing shaft rotation angle detecting device detects unusually.
9. the testing fixture of a gear-driving balancer makes to be arranged on being meshed by spiral gear crankshaft toothed wheel that constitutes and the balance gear that is made of spiral gear that is arranged on the balancing shaft on the bent axle, it is characterized in that comprising:
The driving mechanism that bent axle is rotated;
Can in driven direction that is driven in crankshaft toothed wheel and anti-driven direction, select a ground and adjust the mesh adjusting mechanism of the engagement of balance gear and crankshaft toothed wheel;
Detect the crank angle degree pick-up unit of the angle of rotation of bent axle;
Detect the balancing shaft rotation angle detecting device of the angle of rotation of balancing shaft;
The engagement of adjusting balance gear and crankshaft toothed wheel with the rotation number of regulation by any one party in above-mentioned driven direction and the anti-driven direction switches to another direction afterwards, controls the control device of mesh adjusting mechanism with this;
During control device control mesh adjusting mechanism,, detect the unusual abnormal detector of balance gear and crankshaft toothed wheel according to the angle of rotation that crank angle degree pick-up unit and balancing shaft rotation angle detecting device are detected.
10. the testing fixture of gear-driving balancer according to claim 9 is characterized in that:
Above-mentioned abnormal detector, by calculating each driving error, the profile of tooth that detects balance gear and crankshaft toothed wheel is unusual.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005140869A JP2006317310A (en) | 2005-05-13 | 2005-05-13 | Apparatus for inspecting gear driven balancer |
| JP2005140869 | 2005-05-13 |
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| Publication Number | Publication Date |
|---|---|
| CN1862245A true CN1862245A (en) | 2006-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610081963 Pending CN1862245A (en) | 2005-05-13 | 2006-05-12 | Checking device of the gear-driving balancer |
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| JP (1) | JP2006317310A (en) |
| CN (1) | CN1862245A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102401643A (en) * | 2010-09-16 | 2012-04-04 | 软控股份有限公司 | rotation angle transmission measuring device and method thereof |
| CN103797346A (en) * | 2011-09-15 | 2014-05-14 | 通用电气公司 | Shaft imbalance detection system |
| CN109476024A (en) * | 2016-09-27 | 2019-03-15 | 松下知识产权经营株式会社 | The control method and welding method of robot |
| CN112815080A (en) * | 2021-01-04 | 2021-05-18 | 东风汽车股份有限公司 | Gear clearance control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4722685B2 (en) * | 2005-12-02 | 2011-07-13 | 富士重工業株式会社 | Gear pair testing equipment |
| KR100935928B1 (en) | 2008-02-15 | 2010-01-08 | (주)삼호정기 | Inspection apparatus for gear's shape |
| KR101232738B1 (en) | 2010-12-23 | 2013-02-13 | 마그나파워트레인코리아 주식회사 | Backlash Measurement Device And Method For Balancer |
| EP2498076A1 (en) * | 2011-03-11 | 2012-09-12 | Hexagon Technology Center GmbH | Wear-Monitoring of a Gearbox in a Power Station |
| KR101294345B1 (en) | 2011-12-28 | 2013-08-06 | 전자부품연구원 | Apparatus for measuring backlash of planatary reduction gear |
| US9109975B2 (en) | 2013-04-02 | 2015-08-18 | Caterpillar Inc. | Apparatus for measuring backlash in specimen gear |
| CN104457661B (en) * | 2014-04-01 | 2017-02-15 | 太原重工股份有限公司 | Detecting device capable of adjusting transmission gap and transmission gap adjusting mechanism |
| CN107520708A (en) * | 2017-09-04 | 2017-12-29 | 刘志伟 | One kind, which is floated, perceives grinding head device |
| CN116938051B (en) * | 2023-09-19 | 2023-12-19 | 山东乐康电器科技有限公司 | High-precision intelligent constant-rotation-speed source and implementation method thereof |
-
2005
- 2005-05-13 JP JP2005140869A patent/JP2006317310A/en active Pending
-
2006
- 2006-05-12 CN CN 200610081963 patent/CN1862245A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401643A (en) * | 2010-09-16 | 2012-04-04 | 软控股份有限公司 | rotation angle transmission measuring device and method thereof |
| CN103797346A (en) * | 2011-09-15 | 2014-05-14 | 通用电气公司 | Shaft imbalance detection system |
| CN103797346B (en) * | 2011-09-15 | 2017-07-28 | 通用电气公司 | Unbalanced shaft detecting system |
| CN109476024A (en) * | 2016-09-27 | 2019-03-15 | 松下知识产权经营株式会社 | The control method and welding method of robot |
| CN109476024B (en) * | 2016-09-27 | 2021-09-28 | 松下知识产权经营株式会社 | Robot control method and welding method |
| CN112815080A (en) * | 2021-01-04 | 2021-05-18 | 东风汽车股份有限公司 | Gear clearance control method |
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| Publication number | Publication date |
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| JP2006317310A (en) | 2006-11-24 |
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Open date: 20061115 |