CN109648353A - Z-axis driving structure and PCB edge milling machines - Google Patents
Z-axis driving structure and PCB edge milling machines Download PDFInfo
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- CN109648353A CN109648353A CN201710944119.8A CN201710944119A CN109648353A CN 109648353 A CN109648353 A CN 109648353A CN 201710944119 A CN201710944119 A CN 201710944119A CN 109648353 A CN109648353 A CN 109648353A
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- 238000003801 milling Methods 0.000 title claims abstract description 20
- 238000006073 displacement reaction Methods 0.000 claims description 21
- 238000007906 compression Methods 0.000 claims description 6
- 238000007667 floating Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 8
- 230000005484 gravity Effects 0.000 description 16
- 230000007423 decrease Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 208000033748 Device issues Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
- B23Q11/0017—Arrangements compensating weight or flexion on parts of the machine compensating the weight of vertically moving elements, e.g. by balancing liftable machine parts
- B23Q11/0025—Arrangements compensating weight or flexion on parts of the machine compensating the weight of vertically moving elements, e.g. by balancing liftable machine parts using resilient means, e.g. springs, hydraulic dampers
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Abstract
The present invention provides a kind of z-axis driving structure and PCB edge milling machines, it is related to technical field of mechanical processing, the z-axis driving structure, comprising: the z-axis and fixed plate being slidably connected, and linear motor is provided between the z-axis and fixed plate, the linear motor is for driving the z-axis vertically to move；The z-axis driving structure includes supporting weight structure, the weight structure that supports includes the buffer spring being set between the z-axis and fixed plate, the pressing plate extended to the z-axis direction is provided in the fixed plate, one end of the buffer spring is fixed in the fixed plate, the other end is pressed on the bottom surface of the pressing plate, and the buffer spring is used to support the z-axis.When accident power-off occurs for PCB edge milling machines, prevent z-axis from declining the workpiece destroyed below z-axis suddenly.Using linear motor as power source, frictional force is small during its driving, non-maintaining, and in time, muting function is good, and stability is good, compact-sized for response.
Description
Technical field
The present invention relates to technical fields of mechanical processing, more particularly, to a kind of z-axis driving structure and PCB edge milling machines.
Background technique
Currently, most of PCB edge milling machines in the market is using whole Z axis structure synchronization lifting, it is unexpected disconnected in order to prevent
After electricity, the z-axis of PCB edge milling machines is vertically fallen, and counteracting structure is provided in the z-axis of PCB edge milling machines, is mainly used for offsetting z-axis
Weight, currently, being to be directly connected to z-axis by cylinder, cylinder is constantly in upward tension state, and lead screw motor band is usually used
Brake driving.But to there is frictional force in use big for this structure, maintenance cost is high, and not in time, noise is big etc. for response
Problem.
Summary of the invention
The purpose of the present invention is to provide a kind of z-axis driving structure and PCB edge milling machines, to alleviate existing PCB edge milling machines
It is big to there is frictional force in use, maintenance cost is high, response not in time, the problems such as noise is big.
Z-axis driving structure provided by the invention, comprising: the z-axis and fixed plate being slidably connected, and the z-axis and fixed plate
Between be provided with linear motor, the linear motor is for driving the z-axis vertically to move；
The z-axis driving structure includes supporting weight structure, it is described support weight structure include be set to the z-axis and fixed plate it
Between buffer spring, the pressing plate extended to the z-axis direction is provided in the fixed plate, one end of the buffer spring is fixed
In in the fixed plate, the other end is pressed on the bottom surface of the pressing plate, and the buffer spring is used to support the z-axis.
Further, cylinder is provided in the fixed plate, the power output end of the cylinder acts in the z-axis,
The cylinder for pushing or pull on the z-axis along the vertical direction.
Further, the cylinder includes directional control valve, and the directional control valve is used to control the piston of the cylinder
The direction of motion of bar.
Further, the z-axis driving structure includes displacement sensor, and institute's displacement sensors are for detecting the z-axis
Position so that after the z-axis moves to predeterminated position, the control of institute's displacement sensors changes gas by the directional control valve
The direction of motion of the piston rod of cylinder.
Further, institute's displacement sensors include laser beam emitting device and laser reflecting device, the Laser emission dress
It sets and is separately positioned in the fixed plate and z-axis with laser reflecting device, the laser reflecting device is for reflecting the laser
The light that emitter issues；Institute's displacement sensors are for detecting the displacement that the z-axis is staggered relative to the fixed plate.
Further, the quantity to weight structure is even number, supports weight structure described in even number and is symmetrically arranged in institute
State the two sides of linear motor.
Further, the bottom surface of the pressing plate is fixed with guide rod, and the buffer spring is socketed in outside the guide rod, institute
Guide rod is stated for preventing the buffer spring from tilting in compression process.
Further, it is provided with pedestal corresponding with the pressing plate in the fixed plate, is provided with guiding on the pedestal
Bar, the buffer spring are socketed in outside the guide rod, and through-hole corresponding with the guiding shank diameter is provided on the pressing plate,
And the diameter of the through-hole is less than the outer diameter of the buffer spring.
Further, it is connected between the piston rod and z-axis of the cylinder by floating junction.
PCB edge milling machines provided by the invention, including above-mentioned z-axis driving structure.
Z-axis driving structure provided by the invention, including z-axis and fixed plate, are slidably connected between z-axis and fixed plate.The z
Linear motor is provided between axis and fixed plate, linear motor is for driving the z-axis vertically to move, to realize z-axis
It rises or falls；For z-axis when power-off in order to prevent because self gravity surprisingly declines, the z-axis driving structure includes supporting weight
Structure, it is described support weight structure include the buffer spring being set between the z-axis and fixed plate, be provided in the fixed plate to
The pressing plate that the z-axis direction extends, one end of the buffer spring are fixed in the fixed plate, and the other end is pressed on the pressure
The bottom surface of plate.When PCB edge milling machines occur accident power-off when, z-axis because gravity effect can there is a phenomenon where falling, and this
When with z-axis decline, pressing plate will be pressed down against buffer spring, and buffer spring supports z-axis to a certain extent, and spring is gradually
It is compressed, the elastic force that deformation generates becomes larger, and slows down the downward trend until the stopping z-axis, prevents z-axis from declining suddenly broken
Workpiece below bad z-axis.On the other hand, using linear motor as power source, frictional force is small during its driving, exempts to tie up
Shield, in time, muting function is good, and stability is good, compact-sized for response.
PCB edge milling machines provided by the invention, including above-mentioned z-axis driving structure.The z axis driving structure include z-axis and
Fixed plate is slidably connected between z-axis and fixed plate.Linear motor is provided between the z axis and fixed plate, linear motor is used
In driving the z-axis vertically to move, to realize rising or falling for z-axis；Z-axis is because of itself when power-off in order to prevent
Gravity surprisingly declines, and the z-axis driving structure includes supporting weight structure, and the weight structure that supports includes being set to the z-axis and fixation
Buffer spring between plate is provided with the pressing plate extended to the z-axis direction, one end of the buffer spring in the fixed plate
It is fixed in the fixed plate, the other end is pressed on the bottom surface of the pressing plate.When accident power-off occurs for PCB edge milling machines, z
For axis because the effect of gravity can be there is a phenomenon where falling, and at this time with the decline of z-axis, pressing plate will be pressed down against buffer spring,
Buffer spring supports z-axis to a certain extent, and spring is gradually compressed, deformation generate elastic force become larger, slow down until
The downward trend for stopping the z-axis preventing z-axis from declining the workpiece destroyed below z-axis suddenly.On the other hand, using linear motor
As power source, frictional force is small during its driving, non-maintaining, and in time, muting function is good, and stability is good, structure for response
It is compact.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram for the z-axis driving structure that the embodiment of the present invention 1 provides；
Fig. 2 is the partial enlarged view of location A in Fig. 1；
Fig. 3 is the cross-sectional view for the z-axis driving structure that the embodiment of the present invention 1 provides；
Fig. 4 is the partial enlarged view in Fig. 3 at B location；
Fig. 5 is the cross-sectional view for the z-axis driving structure that the embodiment of the present invention 2 provides；
Fig. 6 is the partial enlarged view in Fig. 5 at location of C.
Icon: 100-z axis；200- fixed plate；300- buffer spring；400- linear motor；500- pressing plate；600- cylinder；
700- guide rod；800- pedestal；900- floating junction.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that such as occur term " center ", "upper", "lower", "left", "right",
"vertical", "horizontal", "inner", "outside" etc., the orientation or positional relationship of instruction are that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, such as there is art
Language " first ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
The present invention provides a kind of z-axis driving structures, and multiple embodiments are given below and drive knot to z-axis provided by the invention
Structure is described in detail.
Embodiment 1
As shown in Figs. 1-2, z-axis driving structure provided by the invention, including z-axis 100 and fixed plate 200, z-axis 100 and solid
It is slidably connected between fixed board 200.Linear motor 400 is provided between the z-axis 100 and fixed plate 200, linear motor 400 is used
In driving the z-axis 100 vertically to move, to realize rising or falling for z-axis 100；Z-axis when power-off in order to prevent
100 because self gravity surprisingly declines, and the z-axis driving structure includes supporting weight structure, and the weight structure that supports includes being set to institute
The buffer spring 300 between z-axis 100 and fixed plate 200 is stated, is provided in the fixed plate 200 to 100 direction of z-axis and is prolonged
The pressing plate 500 stretched, one end of the buffer spring 300 are fixed in the fixed plate 200, and the other end is pressed on the pressing plate
500 bottom surface.When accident power-off occurs for PCB edge milling machines, z axis 100 shows because of what the effect of gravity can fall
As, and at this time with the decline of z-axis 100, pressing plate 500 will be pressed down against buffer spring 300, and buffer spring 300 is to a certain degree
On support z-axis 100, spring is gradually compressed, and the elastic force that deformation generates becomes larger, and is slowed down until stopping the z-axis 100
Downward trend prevents the decline suddenly of z-axis 100 from destroying the workpiece of 100 lower section of z-axis.On the other hand, using 400 conduct of linear motor
Power source, frictional force is small during its driving, non-maintaining, and in time, muting function is good, and stability is good, compact-sized for response.
Buffer spring 300 can may be extension spring for compressed spring.
Linear guide can just be had by being slidably connected, and sliding slot can be set in z-axis 100, can be set in fixed plate 200
The steel ball that can be rolled can be set in sliding rail, for reducing frictional force in sliding rail.
Specifically, cylinder 600 can be set in the fixed plate 200, the cylinder 600, which stands upside down, to be placed, the cylinder
600 power output end direction simultaneously acts in the z-axis 100, by the flexible of cylinder 600, can generate drawing to z-axis 100
Power or thrust.Because of the setting of cylinder 600, when linear motor 400 is not in output power, z-axis 100 will be by three power
Effect, is itself gravity, the tractive force of cylinder 600 and the thrust of spring respectively, and cylinder 600 is to be added to make to balance z-axis
100 itself gravity and spring thrust, so that three is reached balance.
Further, the cylinder 600 may include directional control valve, and the directional control valve can be two-position five-way electricity
Magnet valve, the piston rod that cylinder 600 may be implemented by two-position-five-way solenoid valve is protruding or to contract, thus realization pair
The promotion or pulling function of z-axis 100.
The motion process of z-axis 100 can be divided into two processes.First process: when z-axis 100 is just begun to decline, pressing plate
500 gradually start compressed spring, and at this moment, because the displacement that z-axis 100 declines is shorter, the deformation generated is smaller, to pressing plate
500 support force also with regard to very little, so, at this moment, the resultant force of the gravity and the support force of buffer spring 300 of z-axis 100 is downward, institute
This downward resultant force is balanced to need cylinder 600, so cylinder 600 will generate a upward tractive force to z-axis 100,
Decline z-axis 100 steadily；Second process: when z axis 100 drops to certain position, buffer spring 300 is generated by compression
Deformation quantity it is larger, also just become larger therewith to the support force of pressing plate 500, the support force of the gravity of z-axis 100 and buffer spring 300
Resultant force it is upward, in order to balance this resultant force, can by directional control valve, change cylinder 600 pressure directions, gas can be made
Cylinder 600 is to the pressure direction of z-axis 100, so as to so that the gravity of z-axis 100, the support force of buffer spring 300 and cylinder 600
Pressure three balance, to achieve the effect that cylinder 600 runs smoothly, once powering off, z axis 100 will not occur substantially
The vertical tremor of degree.
Further, the z-axis driving structure may include displacement sensor, and institute's displacement sensors are described for detecting
The position of z-axis 100, after the z-axis 100 can be made to move to predeterminated position, the control of institute's displacement sensors passes through the direction
Control valve changes the direction of motion of the piston rod of cylinder 600.The predeterminated position can be generated for buffer spring 300 by compression
Elastic force identical with 100 gravity of z-axis when, this position can exactly both resultant direction change excessive position.Pass through
The mode of displacement sensor controls directional control valve, can achieve automatic detection, the purpose of automatic reverse.
Specifically, institute's displacement sensors may include laser beam emitting device and laser reflecting device, the Laser emission
Device and laser reflecting device are separately positioned in the fixed plate 200 and z-axis 100, and the laser reflecting device is for reflecting
The light that the laser beam emitting device issues；Institute's displacement sensors are for detecting the z-axis 100 relative to the fixed plate 200
The displacement being staggered.According to the time that laser returns, can obtain at a distance from z-axis 100 is staggered between fixed plate 200.
Displacement sensor can also be other types, such as can also be magnetic railings ruler sensor, pass through the inspection to magnetic field
It surveys, achievees the purpose that detection, to control directional control valve.
In order to make z-axis 100 more smoothly move up and down, the quantity to weight structure can be even number, even number institute
State and be symmetrically arranged to weight structure in the two sides of the linear motor 400, can make in this way z-axis 100 up and down motion when
It waits, itself can keep horizontal, prevent the inclination of z-axis 100, influence the work of PCB edge milling machines.
Specifically, as shown in Figure 3-4, the side of the lower end of buffer spring 300 can be fixed in fixed plate 200, example
Such as using welding or being clamped mode, the bottom surface of the pressing plate 500 can be fixed with guide rod 700, the buffer spring 300
It is socketed in outside the guide rod 700, the guide rod 700 is for preventing the buffer spring 300 from tilting in compression process.
There is no limit under the action of pressing plate 500, guide rod 700 can be from the lower end of buffer spring 300 for the lower end of buffer spring 300
Mouth stretches out, and setting guide rod 700 can be such that buffer spring 300 is gradually compressed on axis, prevents buffer spring 300 from pressing
Occurs the phenomenon that being bent or tilting during contracting, to keep it more steady to the support force of pressing plate 500.
Further, it is connected between the piston rod and z-axis 100 of the cylinder 600 by floating junction 900.Floating junction
900 are equivalent to shaft coupling, are to extend service life of equipment for eliminating error, protecting associated components and equipment being made to run smoothly
's.
Embodiment 2
As seen in figs. 5-6, difference from Example 1 is, can be set in the fixed plate 200 and the pressing plate
500 corresponding pedestals 800 are provided with guide rod 700 on the pedestal 800, can pass through between guide rod 700 and pedestal 800
The mode of welding is fixed, and the buffer spring 300 is socketed in outside the guide rod 700.Can be set on the pressing plate 500 with
The corresponding through-hole of 700 diameter of guide rod, and the diameter of the through-hole is less than the outer diameter of the buffer spring 300.Namely
It says, during z-axis 100 moves downward, pressing plate 500 pushes down buffer spring 300, gradually compresses it, and guide rod 700 is then
Through-hole on pressing plate 500, setting guide rod 700 can be such that buffer spring 300 is gradually compressed on axis, prevent from delaying
Rush spring 300 and occur the phenomenon that being bent or tilting during compression, thus make its to the support force of pressing plate 500 more
Steadily.
In conclusion z-axis driving structure provided by the invention, including z-axis 100 and fixed plate 200, z-axis 100 and fixed
It is slidably connected between plate 200.Linear motor 400 is provided between the z-axis 100 and fixed plate 200, linear motor 400 is used for
The z-axis 100 is driven vertically to move, to realize rising or falling for z-axis 100；Z-axis when power-off in order to prevent
100 because self gravity surprisingly declines, and the z-axis driving structure includes supporting weight structure, and the weight structure that supports includes being set to institute
The buffer spring 300 between z-axis 100 and fixed plate 200 is stated, is provided in the fixed plate 200 to 100 direction of z-axis and is prolonged
The pressing plate 500 stretched, one end of the buffer spring 300 are fixed in the fixed plate 200, and the other end is pressed on the pressing plate
500 bottom surface.When accident power-off occurs for PCB edge milling machines, z-axis 100 shows because of what the effect of gravity can fall
As, and at this time with the decline of z-axis 100, pressing plate 500 will be pressed down against buffer spring 300, and buffer spring 300 is to a certain degree
On support z-axis 100, spring is gradually compressed, and the elastic force that deformation generates becomes larger, and is slowed down until stopping the z-axis 100
Downward trend, prevent the decline suddenly of z-axis 100 from destroying the workpiece of the lower section of z-axis 100.On the other hand, made using linear motor 400
For power source, frictional force is small during its driving, non-maintaining, and in time, muting function is good, and stability is good, and structure is tight for response
It gathers.
PCB edge milling machines provided by the invention, including above-mentioned z-axis driving structure.The z axis driving structure includes z-axis
100 and fixed plate 200, it is slidably connected between z-axis 100 and fixed plate 200.It is provided between the z-axis 100 and fixed plate 200
Linear motor 400, linear motor 400 for driving the z-axis 100 vertically to move, thus realize z-axis 100 rising or under
Drop；For z-axis 100 when power-off in order to prevent because self gravity surprisingly declines, 100 driving structure of z-axis includes supporting to tie again
Structure, the weight structure that supports includes the buffer spring 300 being set between the z-axis 100 and fixed plate 200, the fixed plate
The pressing plate 500 extended to 100 direction of z-axis is provided on 200, the fixation is fixed in one end of the buffer spring 300
On plate 200, the other end is pressed on the bottom surface of the pressing plate 500.When PCB edge milling machines occur accident power-off when, z-axis 100 because
It can be there is a phenomenon where falling, and at this time with the decline of z-axis 100 for the effect of gravity, pressing plate 500 will be pressed down against buffer spring
300, buffer spring 300 supports z-axis 100 to a certain extent, and spring is gradually compressed, and the elastic force that deformation generates gradually becomes
Greatly, slow down the downward trend until the stopping z-axis 100, prevent the decline suddenly of z-axis 100 from destroying the workpiece of 100 lower section of z-axis.Separately
On the one hand, power source is used as using linear motor 400, frictional force is small during its driving, and non-maintaining, response is in time, quiet
Audio fruit is good, and stability is good, compact-sized.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710944119.8A CN109648353A (en) | 2017-10-11 | 2017-10-11 | Z-axis driving structure and PCB edge milling machines |
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| CN201710944119.8A CN109648353A (en) | 2017-10-11 | 2017-10-11 | Z-axis driving structure and PCB edge milling machines |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113441766A (en) * | 2021-07-12 | 2021-09-28 | 爱柯迪股份有限公司 | 180-degree turnover mechanism of image shell and deburring equipment |
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