CN218081614U

CN218081614U - High-precision machine tool fixture for preventing workpiece from deviating and deforming

Info

Publication number: CN218081614U
Application number: CN202222393599.2U
Authority: CN
Inventors: 郭华
Original assignee: Hubei Haorui Construction Development Co ltd
Current assignee: Hubei Haorui Construction Development Co ltd
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2022-12-20
Anticipated expiration: 2032-09-05

Abstract

The utility model relates to the technical field of machine tools, in particular to a high-precision machine tool fixture for preventing workpieces from deviating and deforming, which comprises a clamping seat, wherein the clamping seat is of a rectangular structure; the clamping seat is characterized in that a lifting groove is formed in the inner cavity of the clamping seat, a limiting groove is formed in the top of the lifting groove, a lifting plate is movably arranged in the inner cavity of the lifting groove, a hydraulic rod is arranged on the surface of the bottom of the clamping seat, a piston rod of the hydraulic rod penetrates through the wall of the clamping seat and extends into the lifting groove, a limiting disc is arranged at the top of the hydraulic rod, the hydraulic rod is located on the lower surface of the lifting plate and abuts against the lower surface of the lifting plate, and a pressing seat is movably inserted into the surface of the lifting plate in a penetrating mode; this is novel not good with the stability that solves current high accuracy machine tool fixture and carrying out the process of centre gripping to the work piece centre gripping to the skew takes place easily at the in-process work piece of processing, leads to the machining precision to the work piece not high, is difficult for controlling at the in-process centre gripping dynamics of centre gripping simultaneously, and the too big problem that can cause the work piece damage of centre gripping dynamics.

Description

High-precision machine tool fixture for preventing workpiece from deviating and deforming

Technical Field

The utility model relates to a lathe technical field, concretely relates to prevent high accuracy machine tool anchor clamps of work piece skew deformation.

Background

Through the discovery of a searched patent, the publication number CN110640500B discloses a high-precision machine tool clamp, which comprises a base, wherein the base comprises a front part and a rear part, and a sliding table cavity seat and a chuck cavity seat are formed in the front part and the rear part after four ends are fixedly clamped through bolt and nut pieces; the sliding table cavity seat is communicated with the chuck cavity seat, and the top of the sliding table cavity seat is hollow; the middle part of the base forms a positioning head through die assembly; a sliding table with a pair of sliding blocks is fixed on the inner side of the sliding table cavity seat; a handle of the sliding table protrudes out of the outer end part of the base; two slide blocks of the sliding table are provided with double dovetail slide ways; the high-precision machine tool clamp is flexible and convenient in assembly and adjustment mode, and can complete the adjustment of the eccentricity of the clamp and the adjustment of the inner diameter of the clamp; longitudinal limiting, transverse limiting and side limiting are completed through the sliding head, the transverse limiting screw rod and the outer pressing bolt; thereby greatly reducing the vibration channeling.

The stability of work piece centre gripping is not good at the process of carrying out the centre gripping to the work piece to current high accuracy machine tool anchor clamps to the work piece takes place the skew easily at the in-process work piece of processing, leads to the machining precision to the work piece not high, is difficult for controlling at the in-process clamping dynamics of centre gripping simultaneously, and the too big damage that can cause the work piece of clamping-force degree for solving above-mentioned problem, provides a high accuracy machine tool anchor clamps that prevent work piece skew and warp in this application.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the above-mentioned problem that prior art exists, a prevent high accuracy machine tool anchor clamps of work piece skew deformation is provided to solve current high accuracy machine tool anchor clamps and carrying out the stability of centre gripping to the work piece not good at the process of centre gripping to the work piece, thereby skew takes place easily at the in-process work piece of processing, lead to the machining precision not high to the work piece, be difficult for controlling at the in-process clamping force of centre gripping simultaneously, the too big problem that can cause the work piece damage of clamping force.

The basic scheme of the utility model is that: a high-precision machine tool clamp for preventing a workpiece from deviating and deforming comprises a clamping seat, wherein the clamping seat is of a rectangular structure;

the lifting groove has been seted up to the holder inner chamber, the spacing groove has been seted up to lifting groove top, lifting groove inner chamber activity is equipped with the lifter plate, holder bottom surface is equipped with the hydraulic stem, the piston rod of hydraulic stem runs through the holder chamber wall and extends to the lifting groove, the hydraulic stem top is equipped with spacing dish, and the hydraulic stem is located lifter plate lower surface butt, lifter plate surface activity runs through to peg graft and has the seat that compresses tightly, it links to each other with the piston rod top of hydraulic stem to compress tightly the seat top, it is equipped with supporting spring to compress tightly seat surface cover.

Preferably, the corners of the lifting plate are rotatably connected with clamping arms through rotating seats, and the clamping arms are of L-shaped structures.

Preferably, the end parts of the clamping arms are integrally formed with a top plate.

Preferably, the mounting groove has all been seted up with the corresponding department in arm lock position in spacing groove both ends, the fixing base is installed to the mounting groove inner chamber, and the fixing base tip extends to the lifting groove inner chamber.

Preferably, the surface of the end of the fixed seat is provided with a guide rod, the surface of the clamping arm is provided with a guide groove in a penetrating manner, and the guide groove is inserted into the guide rod.

Preferably, the inner cavity of the limiting groove is movably provided with a workpiece.

The utility model discloses a theory of operation and advantage lie in:

(1) This technical scheme work piece bottom is pegged graft at the spacing inslot, the spacing groove size is the same with work piece bottom size, thereby the work piece can play spacing effect to the work piece after pegging graft with the spacing groove, the hydraulic stem shrink simultaneously, the hydraulic stem can drive the lifter plate and descend at the lifter groove, the guide way that arm lock surface was seted up is under the guide bar guide effect, make arm lock bottom deflect under the effect of roating seat, and make the arm lock top outwards open, the arm lock opens the inner wall that the back accessible roof supports at the work piece, carry out the centre gripping to the work piece through spacing groove and roof, can promote the stability to the work piece centre gripping, avoid the work piece emergence skew in the course of working, can promote the machining precision.

(2) When this technical scheme hydraulic stem drove the lifter plate and descends, the accessible compresses tightly the seat and compresses support spring to when pressing from both sides tight the work piece, can play the effect of buffering to the holding down force of lifter plate through support spring to the hydraulic stem, avoid when carrying out the centre gripping to the work piece, the clamping-force is too big to cause the deformation of work piece.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the present invention;

fig. 3 is a schematic sectional structure of the present invention;

reference numerals referred to in the drawings are:

1. a holder; 2. a lifting groove; 3. a limiting groove; 4. a lifting plate; 5. a hydraulic rod; 6. a pressing seat; 7. a support spring; 8. clamping arms; 9. a top plate; 10. a guide groove; 11. mounting grooves; 12. a fixed seat; 13. a guide rod; 14. and (5) a workpiece.

Detailed Description

The following is further detailed by way of specific embodiments:

as shown in fig. 1-3, a high-precision machine tool fixture for preventing workpiece from deviating and deforming comprises a clamping seat 1, wherein the clamping seat 1 is in a rectangular structure;

lifting groove 2 has been seted up to 1 inner chamber of holder, spacing groove 3 has been seted up at 2 tops in lifting groove, 2 inner chamber activities in lifting groove are equipped with

lifter plate

4, 1 bottom surface of holder is equipped with hydraulic stem 5, the piston rod of hydraulic stem 5 runs through 1 chamber wall of holder and extends to lifting groove 2 in, 5 tops of hydraulic stem are equipped with spacing dish, and hydraulic stem 5 is located 4 lower surface butt of lifter plate, 4 surface activities of lifter plate are run through and are pegged graft and have compressing tightly seat 6, it is continuous with the piston rod top of hydraulic stem 5 to compress tightly 6 tops of seat, compress tightly 6 surface covers of seat and be equipped with supporting

spring

7, 3 inner chamber activities in spacing groove are equipped with work piece 14.

The bottom of a workpiece 14 is inserted into the limiting groove 3, the size of the limiting groove 3 is the same as that of the bottom of the workpiece 14, so that the workpiece 14 can be limited after being inserted into the limiting groove 3, meanwhile, the hydraulic rod 5 contracts, the hydraulic rod 5 can drive the lifting plate 4 to descend in the lifting groove 2, the guide groove 10 formed in the surface of the clamping arm 8 deflects under the action of the rotary seat under the guiding action of the guide rod 13, the top of the clamping arm 8 is outwards expanded, the clamping arm 8 can be abutted to the inner wall of the workpiece 14 through the top plate 9 after being expanded, and the workpiece 14 is clamped through the limiting groove 3 and the top plate 9, so that the stability of clamping the workpiece 14 can be improved, the workpiece 14 is prevented from being deviated in the machining process, and the machining precision can be improved;

when the lifting plate 4 is driven to descend by the hydraulic rod 5, the supporting spring 7 can be compressed by the pressing seat 6, so that when the workpiece 14 is clamped, the downward pressure of the hydraulic rod 5 on the lifting plate 4 can be buffered by the supporting spring 7, and the deformation of the workpiece 14 caused by overlarge clamping force when the workpiece 14 is clamped is avoided.

As shown in fig. 2 and 3, the corners of the lifting plate 4 are connected with clamping arms 8 through rotating seats, the clamping arms 8 are in L-shaped structures, and the end parts of the clamping arms 8 are integrally formed with top plates 9.

It should be noted that after the clamping arm 8 is opened, the top plate 9 can abut against the inner wall surface of the workpiece 14, and the workpiece 14 is limited by the top plate 9, so that the workpiece 14 can be rapidly clamped.

As shown in fig. 2 and 3, mounting grooves 11 have been all seted up with the corresponding department in arm lock 8 position at 3 both ends of spacing groove, fixing base 12 is installed to the 11 inner chambers of mounting groove, and the 12 tip of fixing base extends to the 2 inner chambers of lifting chute, 12 tip surfaces of fixing base are equipped with guide bar 13, arm lock 8 surfaces run through and have seted up guide way 10, guide way 10 pegs graft mutually with guide bar 13.

It should be noted that the fixing seat 12 is installed in the installation groove 11 through a countersunk bolt, the guide rod 13 at the end of the fixing seat 12 is inserted into the guide groove 10, and the guide rod 13 and the guide groove 10 are matched with each other, so that the opening and closing of the clamping arm 8 can be guided when the lifting plate 4 is lifted.

When in work: the bottom of a workpiece 14 is inserted into a limiting groove 3, the size of the limiting groove 3 is the same as that of the bottom of the workpiece 14, the workpiece 14 can be limited by the aid of the inserted workpiece 14 and the limiting groove 3, meanwhile, a hydraulic rod 5 contracts, the hydraulic rod 5 can drive a lifting plate 4 to descend in a lifting groove 2, guide grooves 10 formed in the surface of a clamping arm 8 are guided by guide rods 13, the bottom of the clamping arm 8 deflects under the action of a rotary seat, the top of the clamping arm 8 outwards expands, the clamping arm 8 can be abutted to the inner wall of the workpiece 14 through a top plate 9 after expanding, the workpiece 14 is clamped through the limiting groove 3 and the top plate 9, stability of clamping the workpiece 14 can be improved, the workpiece 14 is prevented from deviating in a machining process, machining accuracy can be improved, when the lifting plate 4 descends under the driving of the hydraulic rod 5, the supporting spring 7 can be compressed through the pressing seat 6, when the workpiece 14 is clamped, the effect of buffering the downward pressure of the hydraulic rod 5 on the lifting plate 4 can be achieved through the supporting spring 7, the workpiece 14 is avoided when the workpiece 14 is clamped, the workpiece 14 is prevented from being clamped, the workpiece 14, the lifting plate 14 can be pushed under the action of the guide rods 9, the lifting arm 5, the lifting plate can be pushed, and the guide rods 13 can be pushed under the lifting arm 8.

The above description is only for the embodiment of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, so that those skilled in the art can know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can know all the prior art in this field, and have the capability of applying the conventional experimental means before this date, and those skilled in the art can complete and implement the schemes in combination with their own capability, and some typical known structures or known methods should not become obstacles for those skilled in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides a prevent high accuracy jig of work piece skew deformation which characterized in that: the clamping device comprises a clamping seat (1), wherein the clamping seat (1) is of a rectangular structure;

lifting groove (2) have been seted up to holder (1) inner chamber, spacing groove (3) have been seted up at lifting groove (2) top, lifting groove (2) inner chamber activity is equipped with lifter plate (4), holder (1) bottom surface is equipped with hydraulic stem (5), the piston rod of hydraulic stem (5) runs through holder (1) chamber wall and extends to in lifting groove (2), hydraulic stem (5) top is equipped with spacing dish, and hydraulic stem (5) are located lifter plate (4) lower surface butt, lifter plate (4) surface activity runs through to peg graft and has compressing tightly seat (6), it links to each other with the piston rod top of hydraulic stem (5) to compress tightly seat (6) top, it is equipped with supporting spring (7) to compress tightly seat (6) surface cover.

2. A high-precision machine tool jig for preventing offset deformation of a workpiece according to claim 1, characterized in that: lifter plate (4) edge all rotates through the roating seat and is connected with arm lock (8), arm lock (8) all are L shape structure.

3. A high-precision machine tool holder for preventing offset deformation of a workpiece according to claim 2, wherein: and a top plate (9) is integrally formed at the end part of the clamping arm (8).

4. A high-precision machine tool holder for preventing offset deformation of a workpiece according to claim 3, wherein: mounting groove (11) have all been seted up with the corresponding department in arm lock (8) position in spacing groove (3) both ends, fixing base (12) are installed to mounting groove (11) inner chamber, and fixing base (12) tip extends to lift groove (2) inner chamber.

5. A high-precision machine tool holder for preventing offset deformation of a workpiece according to claim 4, wherein: the utility model discloses a fixing base, including fixing base (12), arm lock (8), guide way (10) and guide bar (13), fixing base (12) tip surface is equipped with guide bar (13), arm lock (8) surface runs through and has seted up guide way (10), guide way (10) are pegged graft mutually with guide bar (13).

6. A high-precision machine tool jig for preventing offset deformation of a workpiece according to claim 1, characterized in that: the inner cavity of the limiting groove (3) is movably provided with a workpiece (14).