CN210909027U

CN210909027U - Positioning clamp for machine tool machining workpiece

Info

Publication number: CN210909027U
Application number: CN201921523318.2U
Authority: CN
Inventors: 张小健
Original assignee: Nanjing Zhishenghe Intelligent Technology Co ltd
Current assignee: Nanjing Zhishenghe Intelligent Technology Co ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-07-03
Anticipated expiration: 2029-09-12

Abstract

The utility model discloses a lathe processing work piece positioning fixture relates to work piece lathe positioning fixture design technical field, and for solving current lathe processing work piece positioning fixture structurally very complicated, brought the unsafe problem in location at the in-process of equipment anchor clamps. The utility model discloses a support plate, including bottom plate, supporting bench, supporting.

Description

Positioning clamp for machine tool machining workpiece

Technical Field

The utility model relates to a work piece lathe positioning fixture designs technical field, specifically is a lathe processing work piece positioning fixture frame.

Background

A machine tool holder is a device on a machine tool for holding a workpiece (and guiding a tool). The function of which is to position the workpiece so that it obtains the correct position with respect to the machine tool and the tool and to clamp the workpiece reliably. Machine tool holders are widely used in the machine manufacturing industry. The adoption of a large number of special machine tool fixtures provides necessary conditions for mass production. The machine tool clamp is a link forming a process system and is an important factor influencing the processing quality. Generally, the quality of products can be stably guaranteed using a machine tool jig without requiring an excessively high skill level of workers. Machine tool fixture design generally includes both structural design and precision design aspects. And people are generally accustomed to focusing on structural design and neglecting precision design. With regard to the design of machine tool fixtures, not only is a great deal of information available for reference, but new efforts are constantly being absorbed from other disciplines and are being developed. As for the precision design of machine tool fixtures, people are increasingly receiving attention as the precision of machining parts is improved.

The existing positioning clamp for machining workpieces by a machine tool is particularly complex in structure, and brings the problem of inaccurate positioning in the process of assembling the clamp; therefore, the existing requirements are not met, and a positioning clamp for a machine tool machining workpiece is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a machine tool machining work piece positioning fixture to it is structurally complicated very much to provide current machine tool machining work piece positioning fixture in solving above-mentioned background art, has brought the unsafe problem in location at the in-process of equipment anchor clamps.

In order to achieve the above object, the utility model provides a following technical scheme: a positioning clamp for a machine tool machining workpiece comprises a bottom plate, a fixed shaft sleeve is arranged below the bottom plate, one side of the fixed shaft sleeve is provided with a nut, a balance table is arranged below the fixed shaft sleeve, a supporting table is arranged above the bottom plate, a positioning pin hole is arranged on the outer wall of the supporting table, a supporting pin is arranged above the supporting table, a fixed block is arranged above the supporting pin, a gasket is arranged above the fixed block, a bolt is arranged above the gasket, a supporting plate is arranged at the front end of the supporting table, a workpiece is arranged at the front end of the supporting plate, a shaft sleeve is arranged above the workpiece, the front end of the workpiece is provided with an open clamp, the front end of the open clamp is provided with a clamping device, the front end of the clamping device is provided with a clamping button, an auxiliary table is arranged on one side of the clamping device, and a countersunk bolt is mounted above the auxiliary table.

Preferably, the fixed shaft sleeve penetrates between the bottom plate and the balance table, and the fixed shaft sleeve is in threaded connection with the bottom plate.

Preferably, the number of the fixing blocks is two, and the two fixing blocks are symmetrical about a horizontal center line of the bottom plate.

Preferably, the front and rear end surfaces of the support plate have a surface roughness of 0.8 and a perpendicularity to the lower end surface of 0.01.

Preferably, the horizontal center line of the split clamp coincides with the horizontal center line of the bottom plate.

Preferably, the clamping device is connected with the baseplate screw.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a part of simple structure such as setting up backup pad, brace table, fixed block makes each partial subassembly of anchor clamps save a large amount of materials in manufacturing process, makes the simpler equipment of operating personnel and dismantles anchor clamps simultaneously.

2. Through setting up circular bottom plate, make the lathe better location and find the processing initial point at the in-process of processing, make the drilling process become simpler.

3. Through the arrangement of the auxiliary table, the center of gravity of the workpiece positioning clamp for machining of the machine tool coincides with the center of gravity of the workpiece, so that errors of a positioning reference and a machining reference are reduced, and the workpiece bears less torque in the drilling process.

4. Through setting up the opening clamp, fixed work piece that can be better prevents that the work piece from taking place to remove at the in-process of drilling to avoid scrapping of work piece.

Drawings

FIG. 1 is a side view of the overall shaft of the present invention;

fig. 2 is an overall plan view of the present invention;

fig. 3 is an overall front view of the present invention.

In the figure: 1. a base plate; 2. a support table; 3. a gasket; 4. a support pin; 5. a bolt; 6. a fixed block; 7. a support plate; 8. a workpiece; 9. a positioning pin hole; 10. a clamping button; 11. a shaft sleeve; 12. an auxiliary table; 13. a countersunk bolt; 14. a split clamp; 15. a clamping device; 16. a nut; 17. fixing the shaft sleeve; 18. a balancing stand.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: a positioning clamp for a machine tool machining workpiece comprises a bottom plate 1, a fixed shaft sleeve 17 is arranged below the bottom plate 1, a nut 16 is arranged on one side of the fixed shaft sleeve 17, a balance table 18 is arranged below the fixed shaft sleeve 17 and can enable a machine tool operating table to clamp the clamp, a support table 2 is arranged above the bottom plate 1, a positioning pin hole 9 is formed in the outer wall of the support table 2 and can enable the support table 2 not to deviate in the process of being fixed on the bottom plate 1 and avoid large errors of a positioning reference, a support pin 4 is arranged above the support table 2, a fixed block 6 is arranged above the support pin 4, a gasket 3 is arranged above the fixed block 6, a bolt 5 is arranged above the gasket 3, a support plate 7 is arranged at the front end of the support table 2, a workpiece 8 is arranged at the front end of the support plate 7, a shaft sleeve 11 is arranged above the workpiece 8, and, avoid taking place to reciprocate in the course of working, the front end of work piece 8 is provided with split collet 14, can make work piece 8 paste the surface at backup pad 7 firmly, make work piece 8 can not take place to move about around, the front end of split collet 14 is provided with clamping device 15, clamping device 15's front end is provided with clamping button 10, one side of clamping device 15 is provided with auxiliary table 12, guarantee the focus of anchor clamps and the focus coincidence of work piece 8, reduce the error of location benchmark and processing benchmark, countersunk bolt 13 is installed to auxiliary table 12's top.

Further, the fixed shaft sleeve 17 penetrates between the bottom plate 1 and the balance table 18, and the fixed shaft sleeve 17 is in threaded connection with the bottom plate 1, so that the horizontal error between the bottom plate 1 and the balance table 18 is effectively guaranteed to be minimum, and the transverse and radial positioning errors are reduced.

Further, the two fixing blocks 6 are arranged, the two fixing blocks 6 are symmetrical about the horizontal center line of the bottom plate 1, the fixing workpieces 8 of the fixing blocks 6 can be better fixed, and deviation in the machining process is avoided, and the qualified rate of the workpieces 8 is reduced.

Furthermore, the surface roughness of the front end surface and the rear end surface of the supporting plate 7 is 0.8, and the verticality of the supporting plate and the lower end surface is 0.01, so that the longitudinal positioning reference of the workpiece 8 is effectively ensured not to deviate, and the workpiece 8 is fixed.

Furthermore, the horizontal center line of the split clamp 14 coincides with the horizontal center line of the base plate 1, so that the split clamp 14 can better clamp the workpiece 8, and meanwhile, the phenomenon that the workpiece 8 is twisted in the clamping process is avoided, and the precision of the machining reference is influenced.

Furthermore, the clamping device 15 is in screw connection with the bottom plate 1, so that firmness of the clamping device 15 is guaranteed, movement is prevented, and large errors are caused to positioning of the workpiece 8.

The working principle is as follows: when the drilling fixture is used, the bottom plate 1, the fixing shaft sleeve 17 and the balance table 18 are fixed by the bolts 5, the supporting plate 7, the auxiliary table 12 and the clamping device 15 are fixed on the bottom plate 1, the workpiece 8 is placed opposite to the round hole in the center of the bottom plate 1, the fixing shaft penetrates through the shaft sleeve 11, the supporting plate 7 and the through hole of the workpiece 8, the fixing shaft is fixed by the nut 16, the fixing of the other through hole is completed in sequence, the fixing block 6 is installed, the lower end face of the supporting plate 7 is tightly fixed on the upper end face of the workpiece 8 by the aid of the gasket 3 and the bolts 5, the workpiece 8 is firmly clamped by the opening clamp 14 by the aid of the clamping button 10, the workpiece 8 is fixed in three directions, the fixture and the workpiece 8 are placed on a machine tool operating table, and.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a machine tool machining work piece positioning fixture, includes bottom plate (1), its characterized in that: a fixed shaft sleeve (17) is arranged below the bottom plate (1), a nut (16) is arranged on one side of the fixed shaft sleeve (17), a balance table (18) is arranged below the fixed shaft sleeve (17), a support table (2) is arranged above the bottom plate (1), a positioning pin hole (9) is formed in the outer wall of the support table (2), a support pin (4) is arranged above the support table (2), a fixed block (6) is arranged above the support pin (4), a gasket (3) is arranged above the fixed block (6), a bolt (5) is arranged above the gasket (3), a support plate (7) is arranged at the front end of the support table (2), a workpiece (8) is arranged at the front end of the support plate (7), a shaft sleeve (11) is arranged above the workpiece (8), and an opening clamp (14) is arranged at the front end of the workpiece (8), the front end of split collet (14) is provided with clamping device (15), the front end of clamping device (15) is provided with clamping button (10), one side of clamping device (15) is provided with auxiliary table (12), countersunk head bolt (13) is installed to the top of auxiliary table (12).

2. The machine tool machining workpiece positioning jig according to claim 1, characterized in that: the fixed shaft sleeve (17) penetrates between the bottom plate (1) and the balance table (18), and the fixed shaft sleeve (17) is in threaded connection with the bottom plate (1).

3. The machine tool machining workpiece positioning jig according to claim 1, characterized in that: the two fixing blocks (6) are arranged, and the two fixing blocks (6) are symmetrical about the horizontal center line of the bottom plate (1).

4. The machine tool machining workpiece positioning jig according to claim 1, characterized in that: the surface roughness of the front end face and the rear end face of the supporting plate (7) is 0.8, and the perpendicularity of the supporting plate and the lower end face is 0.01.

5. The machine tool machining workpiece positioning jig according to claim 1, characterized in that: the horizontal center line of the opening clamp (14) is superposed with the horizontal center line of the bottom plate (1).

6. The machine tool machining workpiece positioning jig according to claim 1, characterized in that: the clamping device (15) is in screw connection with the bottom plate (1).