CN209335396U - Elongated shaft grinding transition supporting arrangement - Google Patents

Abstract

The utility model discloses elongated shaft grinding transition supporting arrangements, it includes adjustable structure, left and right two end caps, fastening screws, and adjustable structure includes support ring, several rest pads, adjusts screw；The outer diameter of support ring is divided into three sections, and middle part outer diameter is big, both ends outer diameter is small, and inner hole is provided with several keyways, and the bottom of keyway is inclined-plane；Rest pad be arranged in keyway, at the top of inclined-plane and support ring in keyway bottom inclined-plane be fitted close, bottom be arc surface；Two end caps in left and right are pressed on the both ends of support ring respectively, and are fastened in support ring by fastening screw；It is provided with an adjusting screw on position corresponding with each rest pad on two end caps in left and right, the bottom surface for adjusting screw is pressed on the end face of rest pad.The present apparatus requires to lower to preamble Vehicle Processing, even if supporting portion outer circle precision is not high, nor affects on grinding accuracy；Meanwhile it not only adjustment is convenient and fast, but also may be implemented accurately to adjust.

Description

Elongated shaft grinding transition supporting arrangement

Technical field

The utility model relates to mechanical manufacturing field, in particular to a kind of elongated shaft grinding transition supporting arrangement.

Background technique

Currently, thin and long shafts part in every profession and trade with more and more extensive, and dimensional accuracy and shaped position precision want Ask also higher and higher.Thin and long shafts part due to diameter is small and length is very long so that its processing when it is rigidly very poor, hold very much It is also easy to produce deformation, influences machining accuracy, just the grinding processing method traditional to elongated shaft brings great challenge for this.To prevent from being ground When be deformed, do not need only rely upon two thimble clamping workpieces of head and the tail, it is also necessary to one or more centre frames support workpiece, There are two types of currently used bearing methods:

One, centre frame is directly supported on excircle of workpiece；The shortcomings that such method, is: preceding since elongated shaft easily deforms Sequence processes the circularity and cylindricity that not can guarantee work mounting s position outer circle；Two thimble clamping workpieces also are used in grinding, The self weight of workpiece can also cause to deform, thus can not centering supporting portion by playing table；If supporting work with centre frame by force Part, the outer circle precision that certainly will will cause processing not can guarantee.

Two, centre frame is supported in transition sleeve outer circle, and transition sleeve covers outside workpiece, and respectively there are 4 screws at the both ends of transition sleeve Clamping workpiece；The shortcomings that such method, is: Zhi Chengqian, beats table correction transition sleeve outer circle, is adjusted by both ends screw, but two End influences each other when adjusting screw adjustment, it is difficult to ensure that the outer circle axis of transition sleeve outer circle and elongated shaft supporting portion is not crooked； In addition both ends screw directly adjusts radial position, is difficult accurately to control；Therefore, adjustment is time-consuming and laborious extremely difficult, not only efficiency It is very low, and precision is also not very high.

Summary of the invention

The problem to be solved by the utility model is to provide a kind of elongated shaft grinding transition supporting arrangements, it may be implemented Accurate adjustment, grinding accuracy height, reliable in quality；Meanwhile adjustment is convenient and fast for the device.

The utility model elongated shaft grinding transition supporting arrangement, it includes adjustable structure, two end caps in left and right, fastening spiral shell Nail, adjustable structure include support ring, several rest pads, adjust screw；The outer diameter of support ring is divided into three sections, middle part outer diameter Greatly, both ends outer diameter is small, and inner hole is provided with several keyways, and the bottom of keyway is inclined-plane；Rest pad is arranged in keyway, The inclined-plane of keyway bottom is fitted close in inclined-plane and support ring at the top of it, and bottom is arc surface；The end cap difference of left and right two The both ends of support ring are pressed on, and are fastened in support ring by fastening screw；Left and right two end caps on each rest pad phase An adjusting screw is provided on corresponding position, the bottom surface for adjusting screw is pressed on the end face of rest pad.

Further, transition supporting device further includes screw, and screw is arranged in the counterbore of 3 both ends outer diameters of bearing, spiral shell Line section is connected with two threaded holes on each rest pad.

Further, the keyway number of support ring is four, and rest pad is also four, is corresponded with keyway.

Further, the gradient of support ring keyway bottom surface is 2-7 °.

Further, there are gap, rest pad between the rear and front end face of rest pad and the rear and front end face of support ring keyway It can move left and right.

Further, outer diameter is contacted with grinder center frame in the middle part of support ring, rest pad bottom arc surface and elongated shaft-like work Bearing outer circle contact.

When using the present apparatus, first the device is covered outside the supporting portion of elongated shaft, then removes whole screws, respectively Screw is adjusted, makes each rest pad by inclined-plane tensioner, so that the transition apparatus and elongated shaft-like work be made to hold tightly together； Again will equipped with grinding transition supporting device elongated shaft be mounted on grinding machine two it is top on, after the pressure for adjusting thimble, play table Correct large cylindrical among support ring；Since elongated shaft is rigidly poor, preamble Vehicle Processing just inevitably has deformation, be self-possessed in addition caused by Deformation, at this moment jerk value is larger, it is broad in the middle outer can to carry out centering support ring by adjusting separately the axial positions of four rest pads Circle, adjustable jerk value to 0.01mm or less.It, only need to be by the left side when needing to the left to adjust a rest pad when adjustment Adjusting screw unclamp, after holding out against the adjusting screw on the right side to the position needed, then the adjusting screw on the left side tightened, instead ?.During adjustment, the axis of support ring it is parallel with elongated shaft work mounting s position outer circle axis always without Skew, small gradient keep rest pad axial displacement very big, and corresponding radial displacement very little, thus may be implemented fast, accurately Correction, then the large cylindrical among support ring is supported with grinder center frame, so that it may it is ground outside each shelves for needing to be ground on elongated shaft Circle.

Therefore, the present apparatus requires to lower to preamble Vehicle Processing, even if supporting portion outer circle precision is not high, nor affects on grinding Machining accuracy；Meanwhile it not only adjustment is convenient and fast, but also may be implemented accurately to adjust, grinding accuracy is high, reliable in quality.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the left view of Fig. 1.

Specific embodiment

The utility model is described in more detail with reference to the accompanying drawing.

Embodiment 1

From Fig. 1, Fig. 2 it is found that the utility model elongated shaft grinding transition supporting arrangement, it includes adjustable structure, left and right Two end caps 5, fastening screw 6, adjustable structure include support ring 3, several rest pads 4, adjust screw 1；The outer diameter of support ring 3 It is divided into three sections, middle part outer diameter is big, both ends outer diameter is small, and inner hole is provided with several keyways, and the bottom of keyway is oblique Face；Rest pad 4 be arranged in keyway, at the top of inclined-plane and support ring 3 in keyway bottom inclined-plane be fitted close, bottom is Arc surface；Two end caps 5 in left and right are pressed on the both ends of support ring 3 respectively, and are fastened in support ring 3 by fastening screw 6；It is left It is provided with an adjusting screw 1 on position corresponding with each rest pad 4 on right two end caps 5, adjusts the bottom surface of screw 1 It is pressed on the end face of rest pad 4.

Four through-holes and several screw holes are uniformly distributed on two end caps 5 in left and right, four through-holes are so as to the end of left and right two Lid is fixed in support ring by fastening screw 6, several screw holes are to installation and adjustment screw 1.

Each rest pad 4 can adjust separately its axial position by the adjusting screw 1 at both ends, be independent of each other, can be with The eccentricity of the bearing outer circle of accurate adjustment 3 opposite elongate shaft-like work of support ring, and then can be in the middle part of accurate centering support ring 3 Support outer circle.

Embodiment 2

The utility model elongated shaft grinding transition supporting arrangement further includes screw 2, and screw 2 is arranged in 3 both ends outer diameter of support ring Counterbore in, thread segment is connected with two threaded holes on each rest pad 4.

If support ring relies only on the bearing for adjusting screw, it is easy to fall when toward dress on elongated shaft-like work, to damage Support ring simultaneously influences job schedule, therefore as a kind of improved procedure of the utility model, the utility model is also provided with screw, and screw is used to It is fixed on rest pad in support ring, is disassembled again after the device is attached on elongated shaft, to enable rest pad axially to move It is dynamic.

Embodiment 3

The keyway number of support ring 3 is four, and rest pad 4 is also four, is corresponded with keyway.

Because elongated shaft stress easily deforms, stress point is preferably symmetrical arranged.Therefore, the keyway of support ring 3 Preferably uniformly distributed four, such rest pad are also four, then on elongated shaft stress point symmetry, to prevent elongated shaft It deforms, ensure that required precision.

Embodiment 4

The gradient of 3 keyway bottom surface of support ring is 2-7 °.The rear and front end face of rest pad 4 and the front and back two of 3 keyway of support ring There is gap between end face, rest pad 4 can move left and right.

Rest pad keyway bottom surface is 2-7 ° of smaller gradient, and the top surface of corresponding rest pad is also smaller gradient, degree with Keyway bottom surface degree is identical.Smaller gradient is more accurate when rest pad is adjusted.The rear and front end face of rest pad 4 and support ring The rear and front end face of keyway is larger gap cooperation, so that rest pad is mobile more convenient when adjustment.

Embodiment 5

3 middle part outer diameter of support ring is contacted with grinder center frame, outside the bearing of 4 bottom arc surface of rest pad and elongated shaft-like work Circle contact.

When processing the present apparatus: elongated shaft is ground needs to support with one grade of outer circle close to intermediate position first, and In preamble Vehicle Processing, detection records this grade of size d；Then support ring 3 is processed, rest pad 4 is except there are remaining for bottom circular arc Amount is outer, remaining position all processes；Four rest pads are fixed on to four uniformly distributed keys of support ring inner hole by screw 2 again In slot, a small outer circle of clamped one time support ring 3, the Inner arc of simultaneous processing rest pad 4 and the middle part of support ring 3 are outer greatly Circle, it is ensured that the Inner arc concentricity of support ring large cylindrical and rest pad, while guaranteeing the diameter and elongated shaft-like work ruler of Inner arc Very little d small―gap suture cooperation；Left and right end cap 5 is fixed in support ring by fastening screw 6, four adjustings are installed again on the end cap of left and right Screw 1.

When using the present apparatus, first the device is covered outside the supporting portion of elongated shaft, then removes whole screws 2, point Screw 1 Tiao Jie not be adjusted, makes each rest pad by inclined-plane tensioner, so that the transition apparatus and elongated shaft-like work be made to hold tightly one It rises；Again will equipped with grinding transition supporting device elongated shaft be mounted on grinding machine two it is top on, after the pressure for adjusting thimble, beat Table corrects large cylindrical among support ring；Since elongated shaft is rigidly poor, preamble Vehicle Processing just inevitably has deformation, and self weight causes in addition Deformation, at this moment jerk value is larger, it is broad in the middle can to carry out centering support ring by adjusting separately the axial positions of four rest pads Outer circle, adjustable jerk value to 0.01mm or less.It, only need to will be left when needing to the left to adjust a rest pad when adjustment The adjusting screw on side unclamps, and after holding out against the adjusting screw to the position needed on the right side, then the adjusting screw on the left side is tightened, Vice versa.During adjustment, the axis of support ring it is parallel with elongated shaft work mounting s position outer circle axis always without Can be crooked, small gradient keeps rest pad axial displacement very big, and corresponding radial displacement very little, thus may be implemented quick, accurate Ground correction, then the large cylindrical among support ring is supported with grinder center frame, so that it may it is ground each shelves for needing to be ground on elongated shaft Outer circle.

Using this elongated shaft grinding transition supporting arrangement, not only centering is convenient, fast, but also outside each shelves being ground Circle, circularity, cylindricity, coaxial accuracy are also reliably guaranteed.

Claims (6)

1. elongated shaft grinding transition supporting arrangement, it is characterized in that: it includes adjustable structure, two end caps (5) in left and right, fastening spiral shell It follows closely (6), adjustable structure includes support ring (3), several rest pads (4), adjusts screw (1)；The outer diameter of support ring (3) is divided into three Section, middle part outer diameter is big, both ends outer diameter is small, and inner hole is provided with several keyways, and the bottom of keyway is inclined-plane；Bearing Block (4) be arranged in keyway, at the top of inclined-plane and support ring (3) in keyway bottom inclined-plane be fitted close, bottom be circle Cambered surface；Two end caps (5) in left and right are pressed on the both ends of support ring (3) respectively, and are fastened on support ring by fastening screw (6) (3) on；It is provided with an adjusting screw (1) on position corresponding with each rest pad (4) on two end caps (5) in left and right, The bottom surface for adjusting screw (1) is pressed on the end face of rest pad (4).

2. elongated shaft grinding transition supporting arrangement according to claim 1, it is characterized in that: transition supporting device further includes Screw (2), screw (2) are arranged in the counterbore of support ring (3) both ends outer diameter, two on thread segment and each rest pad (4) A threaded hole is connected.

3. elongated shaft grinding transition supporting arrangement according to claim 1, it is characterized in that: the keyway of support ring (3) Number is four, and rest pad (4) is also four, is corresponded with keyway.

4. elongated shaft grinding transition supporting arrangement according to claim 1, it is characterized in that: support ring (3) keyway bottom surface Gradient be 2-7 °.

5. elongated shaft grinding transition supporting arrangement according to claim 1, it is characterized in that: the front and back two of rest pad (4) There is gap between end face and the rear and front end face of support ring (3) keyway, rest pad (4) can move left and right.

6. elongated shaft grinding transition supporting arrangement according to claim 1, it is characterized in that: outer diameter in the middle part of support ring (3) It is contacted with grinder center frame, the bearing outer circle contact of rest pad (4) bottom arc surface and elongated shaft-like work.