CN202317318U

CN202317318U - Flexible tapping clamp

Info

Publication number: CN202317318U
Application number: CN2011203331120U
Authority: CN
Inventors: 谭建忠
Original assignee: Beijing Nankou Railway Transit Machinery Co Ltd
Current assignee: CRRC Beijing Nankou Co Ltd
Priority date: 2011-09-06
Filing date: 2011-09-06
Publication date: 2012-07-11
Anticipated expiration: 2021-09-06

Abstract

The utility model discloses a flexible tapping clamp, which comprises a fixed handle, a sleeved, a universal joint and a tap clamping handle, wherein the lower end of the fixed handle is connected with the upper end of the sleeve; the universal joint is arranged in the sleeve; the upper end of the universal joint is connected with the top wall of the sleeve; the lower end of the universal joint exceeds the opening end of the sleeve; and the lower end of the universal joint is connected with the tap clamping handle. According to the flexible tapping clamp, the sleeve and the universal joint are arranged between the fixed handle and the tap clamping handle, and the universal joint is arranged in the sleeve, so that during tapping operating, the universal can adjust the accuracy between the fixed handle and the tap clamping handle under the conditions that the center of the tap is deviated, the tap has manufacturing defects or the feed accuracy of a lathe is low and the like, the tapping accuracy can be improved and the service life of the tap is prolonged.

Description

Flexible tapping jig

Technical field

The utility model relates to tapping jig technology, especially relates to a kind of flexible tapping jig.

Background technology

Existing tapping jig comprises fixed handle and screw tap grip shank, and fixed handle and screw tap grip shank are rigidly connected, when carrying out the tapping operation; The installation portion of fixed handle is fixed on the rotating shaft of drilling machine; Screw tap is installed in the screw tap grip shank, and the rotating shaft of drilling machine rotates, and drives fixed handle and screw tap grip shank and rotates; And then drive the screw tap rotation, tapping is carried out in the hole on the workpiece.

Existing tapping jig is had relatively high expectations to the precision and the rigidity of tapping system; In actual tapping process; When situation such as the screw tap center has that deviation, tapping clamp chucking power are not enough, machining screw is dark, screw tap manufacturing defect or machine tool feed precision deficiency; Often cause screw tap easy to break, problem such as accuracy of thread is poor, and the form of thread is damaged.

And, if the rotating shaft of drilling machine is swung, can drive the tapping jig and swing thereupon, and then drive the screw tap swing, cause screw thread processing defective.Drilling machine can't accurately mate with the specific screw tap pitch of using; Always there is subtle difference between the screw thread of drilling machine processing and the screw tap actual pitch; Need will apply extra axial force this moment on screw tap, thereby can reduce screw tap life-span and thread quality.

The utility model content

The utility model provides a kind of flexible tapping jig, in order to solve the defective that tapping precision of the prior art is lower and screw tap damages easily, can improve the tapping precision, increases the service life of screw tap.

The utility model provides a kind of flexible tapping jig, comprises fixed handle, sleeve, universal joint and screw tap grip shank;

The lower end of said fixed handle is connected with the upper end of said sleeve; Said universal joint is installed in the said sleeve; The upper end of said universal joint is connected with the roof of said sleeve, and the lower end of said universal joint exceeds the openend of said sleeve, and the lower end of said universal joint is connected with said screw tap grip shank.

Preferably, the outer cover of said universal joint is connected to elastic device, the outer wall interference fit of this elastic device and said universal joint.

Preferably, said elastic device is spring or rubber bush.

Preferably, said universal joint comprises connector, intermediate connector and following connector; Said upward connector and said intermediate connector flexibly connect through first bearing pin, and said intermediate connector and said connector down are through the flexible connection of second bearing pin;

The axis of said first bearing pin and said second bearing pin is vertical each other.

Preferably; Said bottom of going up connector has first open slot; The top of said intermediate connector has first contiguous block, and said first contiguous block cooperates with said first open slot, and said first bearing pin passes said first open slot and first contiguous block; The said connector of going up is connected with intermediate connector, and said upward connector and intermediate connector can rotate around said first bearing pin;

The bottom of said intermediate connector has second open slot; The said top of connector down has second contiguous block; Said second bearing pin passes said second open slot and second contiguous block; Said intermediate connector is connected with following connector, and said intermediate connector can rotate around said second bearing pin with following connector.

Preferably; The said bottom of connector down offers axial connecting hole and screwed hole radially, and the top of said screw tap grip shank has clamping part, and said clamping part cooperates with said connecting hole; Cooperate with said screwed hole through bolt, said connector down is connected with said screw tap grip shank.

Preferably, have boss on the said intermediate connector, said boss is fastened on the outside of the openend of said sleeve.

Preferably, has the gap between the openend of said sleeve and the said following connector.

The flexible tapping jig that the utility model provides; Owing between fixed handle and screw tap grip shank, sleeve and universal joint are installed, universal joint is installed in the sleeve, when tapping is operated; Have when the screw tap center under the situation such as deviation, screw tap manufacturing defect or machine tool feed precision deficiency; Universal joint can be regulated the precision between fixed handle and the screw tap grip shank, can improve the tapping precision, increases the service life of screw tap.

Description of drawings

The structural representation of the flexible tapping jig that Fig. 1 provides for the utility model first embodiment;

Fig. 2 is the partial sectional view of the flexible tapping jig among Fig. 1;

The structural representation of the universal joint that Fig. 3 provides for the utility model second embodiment.

Reference numeral:

The 1-fixed handle; The 2-sleeve; The 3-universal joint;

The last connector of 31-; 311-first open slot; The 32-intermediate connector;

321-first contiguous block; 322-second open slot; Connector under the 33-;

331-second contiguous block; The 332-boss; The 333-screwed hole;

The 334-connecting hole; 4-screw tap grip shank; The 41-clamping part;

42-screw tap hole; The 5-spring; The 6-bolt.

The specific embodiment

For the purpose, technical scheme and the advantage that make the utility model clearer; To combine the accompanying drawing among the utility model embodiment below; Technical scheme among the utility model embodiment is carried out clear, intactly description; Obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

See figures.1.and.2 the structural representation of the flexible tapping jig that Fig. 1 provides for the utility model first embodiment; Fig. 2 is the partial sectional view of the flexible tapping jig among Fig. 1.

In first embodiment of the utility model, flexible tapping jig comprises fixed handle 1, sleeve 2, universal joint 3 and screw tap grip shank 4.

The lower end of fixed handle 1 is connected with the upper end of sleeve 2, and universal joint 3 is installed in the sleeve 2, and the upper end of universal joint 3 is connected with the roof of sleeve 2, and the lower end of universal joint 3 exceeds the openend of sleeve 2, and the lower end of universal joint 3 is connected with screw tap grip shank 4.

Universal joint 3 can rotate within the specific limits; The outer cover of universal joint 3 is connected to elastic device; The outer wall interference fit of this elastic device and universal joint 3, elastic device can limit the rotation amplitude of universal joint 3, guarantees the axis degree between fixed handle 1 and the screw tap grip shank 4.Particularly, in the present embodiment, elastic device is a spring 5, and the bottom of spring 5 has the adjusting nut (not shown), can be according to actual needs, and the pretightning force of regulating spring 5.In addition, elastic device also can be selected rubber bush for use.

The flexible tapping jig that present embodiment provides; Because sleeve 2 and universal joint 3 are installed between fixed handle 1 and screw tap grip shank 4, and universal joint 3 is installed in the sleeve 2, when tapping is operated; Have when the screw tap center under the situation such as deviation, screw tap manufacturing defect or machine tool feed precision deficiency; Universal joint 3 can be regulated the precision between fixed handle 1 and the screw tap grip shank 4, can improve the tapping precision, increases the service life of screw tap.

With reference to figure 3, the structural representation of the universal joint that Fig. 3 provides for the utility model second embodiment.

In the present embodiment, universal joint 3 comprises connector 31, intermediate connector 32 and following connector 33.

Last connector 31 flexibly connects through first bearing pin 34 with intermediate connector 32, and intermediate connector 32 is connected through second bearing pin movable 35 with following connector 33.The axis of first bearing pin 34 and second bearing pin 35 is vertical each other.

Particularly; The bottom of last connector 31 has first open slot 311; The top of intermediate connector 32 has first contiguous block, 321, the first contiguous blocks 321 and cooperates with said first open slot 311, and first bearing pin 34 passes the pin shaft hole on first open slot 311 and first contiguous block 321; To go up connector 31 and be connected with intermediate connector 32, last connector 31 can rotate around first bearing pin 34 with intermediate connector 32.

The bottom of intermediate connector 32 has second open slot 322; The top of following connector 33 has second contiguous block 331; Second bearing pin 35 passes the pin shaft hole on second open slot 322 and second contiguous block 331; Intermediate connector 32 is connected with following connector 33, and intermediate connector 32 can rotate around second bearing pin 35 with following connector 33.Because the axis normal of first bearing pin 34 and second bearing pin 35, thereby go up connector 31 and can multidirectionally regulate with respect to intermediate connector 32 with following connector 33, be similar to cating nipple.

In addition; The bottom of following connector 33 offers axial connecting hole 334 and screwed hole radially 333, and the top of screw tap grip shank 4 has clamping part 41, and clamping part 41 cooperates with connecting hole 334; Be screwed into screwed hole 333 through bolt 6, will descend connector 33 to be connected with screw tap grip shank 4.The bottom of screw tap grip shank 4 has screw tap hole 42, when the needs process thread of various specifications, can change the screw tap of different size easily.

Need to prove to have boss 332 on the intermediate connector 32, boss 332 is fastened on the outside of the openend of sleeve 2, avoids connector 31 and following connector 33 to regulate excessive with respect to intermediate connector 32.

Gap between the openend of intermediate connector 32 and sleeve 2 can be confirmed according to the regulated quantity of reality, guarantee the machining accuracy of screw thread.

What should explain at last is: above embodiment is only in order to the technical scheme of explanation the utility model, but not to its restriction; Although the utility model has been carried out detailed explanation with reference to previous embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of each embodiment technical scheme of essence disengaging the utility model of relevant art scheme.

Claims

1. a flexible tapping jig is characterized in that, comprises fixed handle, sleeve, universal joint and screw tap grip shank;

2. flexible tapping jig according to claim 1 is characterized in that the outer cover of said universal joint is connected to elastic device, the outer wall interference fit of this elastic device and said universal joint.

3. flexible tapping jig according to claim 2 is characterized in that said elastic device is spring or rubber bush.

4. flexible tapping jig according to claim 1 and 2 is characterized in that, said universal joint comprises connector, intermediate connector and following connector; Said upward connector and said intermediate connector flexibly connect through first bearing pin, and said intermediate connector and said connector down are through the flexible connection of second bearing pin;

5. according to the flexible tapping jig shown in the claim 4; It is characterized in that said bottom of going up connector has first open slot, the top of said intermediate connector has first contiguous block; Said first contiguous block cooperates with said first open slot; Said first bearing pin passes said first open slot and first contiguous block, and the said connector of going up is connected with intermediate connector, and said upward connector and intermediate connector can rotate around said first bearing pin;

6. according to the flexible tapping jig shown in the claim 5; It is characterized in that; The said bottom of connector down offers axial connecting hole and screwed hole radially, and the top of said screw tap grip shank has clamping part, and said clamping part cooperates with said connecting hole; Cooperate with said screwed hole through bolt, said connector down is connected with said screw tap grip shank.

7. flexible tapping jig according to claim 5 is characterized in that having boss on the said intermediate connector, and said boss is fastened on the outside of the openend of said sleeve.

8. flexible tapping jig according to claim 5 is characterized in that, has the gap between the openend of said sleeve and the said following connector.