CN208004817U - A kind of lever Automatic-clamping chuck - Google Patents

Abstract

The utility model relates to a lever type automatic clamping chuck, which comprises a positioning flange, a conical pressure applying cover, a guide post, a return spring for the guide post, a support frame, a pressure adjusting screw, a pressure retaining frame, a stop block, and a return pressure rod. Spring, pressure rod, top and pressure plate, wherein the top is set at the center of the positioning flange, the tapered pressure cover passes through the top and is set on the positioning flange, and there are several A guide post, the guide post is provided with a guide post return spring, the guide hole on the support frame passes through the guide post and is installed on the guide post, one end of the pressure retainer is provided with a pressure adjustment screw, and the support frame A groove corresponding to the pressure retainer is provided on the top, and a hole corresponding to the pressure adjustment screw is provided in the groove and passes through the outside of the support frame. The utility model greatly improves the clamping speed of the shaft parts, reduces the labor intensity of workers, shortens the processing time, reduces the production cost of the enterprise, and improves the production efficiency of the enterprise.

Description

A lever type automatic clamping chuck

technical field

The utility model belongs to the technical field of machine tool processing, in particular to a lever type automatic clamping chuck.

Background technique

When using a machine tool to process shaft parts, in order to ensure that the shaft parts stay firmly in the processing position, and when the workpiece is pulled to make the workpiece and the spindle perform synchronous rotary motion, in order to avoid the shaft parts flying out and the workpiece and the spindle The phenomenon of asynchronous rotation during rotary motion requires a clamping device to be installed on the rotary spindle of the machine tool to clamp the shaft parts. However, since most of the currently used clamping devices are three-jaw or four-jaw chucks, these devices need to put the workpiece into the jaws when clamping, and then lock the jaws one by one with a wrench, which causes this The clamping method is slow in use, low in efficiency, and labor-intensive for workers, which prolongs the processing time, increases the production cost of the enterprise, and reduces the production efficiency of the enterprise.

Contents of the invention

The technical problem to be solved by the utility model is to provide a lever-type automatic clamping chuck, which solves the problem of the original clamping method by adopting a lever-type pressure rod and a tapered pressure cover to automatically clamp shaft parts. In use, the speed is slow, the efficiency is low, and the labor intensity of workers is high, which prolongs the processing time, increases the production cost of the enterprise, and reduces the production efficiency of the enterprise.

The technical solution adopted by the utility model to solve the technical problem is: provide a lever type automatic clamping chuck, including a positioning flange, a conical pressure applying cover, a guide post, a return spring for the guide post, a support frame, and a pressure adjustment screw , a pressure retainer, a block, a pressure rod return spring, a pressure rod, a top and a pressure plate, wherein the top is set at the center of the positioning flange, and the tapered pressure cover passes through the top and is set on the positioning flange Above, there are several guide pillars around the positioning flange, and guide pillar return springs are arranged on the guide pillars. The guide holes on the support frame pass through the guide pillars and are installed on the guide pillars. The pressure holder One end is provided with a pressure adjustment screw, the support frame is provided with a groove corresponding to the pressure retainer, and a hole corresponding to the pressure adjustment screw is provided in the groove and passes through the outside of the support frame, and the pressure retainer is installed on the In the groove of the support frame, the position of the pressure retainer is adjusted by the pressure adjustment screw, the upper end of the pressure retainer and the support frame are provided with a stopper for limiting the pressure retainer in the groove of the support frame, and the pressure rod It is arranged on the inner side of the support frame, connected with the pressure holder through a pin shaft, and rotates around the pin shaft. The upper end of the pressure rod is connected with the pressure holder through a pressure rod return spring, and the pressure applying plate is installed in the middle of the support frame.

A further technical solution of the utility model is that the positioning flange and the top are respectively inserted into the tapered hole of the main shaft of the machine tool through their respective tapered shafts to realize positioning connection.

A further technical proposal of the utility model is that one end of the guide post is provided with a screw thread, and is installed and fixed in the flange hole of the positioning flange through the screw thread.

A further technical solution of the utility model is that the pressure rod is an arc rod.

A further technical solution of the utility model is that a rubber pad is provided outside the pressure rod for buffering the clamping force and avoiding damage to the surface of the workpiece by clamping.

A further technical solution of the present invention is that a number of connecting screws are provided around the outside of the support frame.

A further technical proposal of the present invention is that a locking nut is provided on the outside of the support frame and on the pressure adjusting screw for locking the pressure adjusting screw.

A further technical solution of the utility model is that a circular hole is provided in the middle of the pressure plate, and arc-shaped grooves and rectangular grooves corresponding to the pressure rod and the guide post are respectively arranged on the periphery.

A further technical solution of the present invention is that the pressure plate is fixedly connected with the support frame through screws.

Beneficial effect

The utility model has changed the original way of locking the claws one by one by means of a wrench, and adopts the form of automatically clamping the shaft parts by using a lever type pressure rod and a tapered pressure cover, which greatly improves the shaft parts. The clamping speed can reduce the labor intensity of the workers, shorten the processing time, reduce the production cost of the enterprise, and improve the production efficiency of the enterprise.

Description of drawings

Fig. 1 is the outline drawing of the lever type automatic clamping chuck of the utility model.

Fig. 2 is the internal structure diagram of the lever type automatic clamping chuck of the utility model.

Fig. 3 is the outline drawing of the positioning flange and the top of the utility model.

Fig. 4 is an outline view of the utility model's conical pressure-applying cover.

Fig. 5 and Fig. 6 are outline views of the support frame of the present invention.

Fig. 7 is an outline view of the pressure rod and the rubber pad of the present invention.

Fig. 8 is an outline view of the pressure plate of the present invention.

Detailed ways

Below in conjunction with specific embodiment, further set forth the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

Example 1

As shown in Figure 1-8, a lever-type automatic clamping chuck includes a positioning flange 1, a conical pressure application cover 2, a guide post 3, a guide post return spring 4, a support frame 5, a pressure adjustment screw 6, Pressure retainer 8, block 9, pressure rod return spring 10, pressure rod 11, top 13 and pressure plate 14, wherein the top 13 is arranged at the center of the positioning flange 1, and the tapered pressure cover 2 wears Over the top 13, set on the positioning flange 1, the positioning flange 1 is surrounded by a number of guide posts 3, the guide post 3 is provided with a guide post return spring 4, and the guide holes on the support frame 5 pass through Pass through the guide post 3 and be installed on the guide post 3. A pressure adjustment screw 6 is provided at one end of the pressure retainer 8. A groove corresponding to the pressure retainer 8 is provided on the support frame 5, and a groove is provided in the groove. Corresponding to the pressure adjusting screw 6, the hole passing through the outside of the support frame 5, the pressure retainer 8 is installed in the groove of the support frame 5, the position of the pressure retainer 8 is adjusted by the pressure adjustment screw 6, and the pressure retainer 8, the upper end and the support frame 5 are provided with a stopper 9, which is used to limit the pressure holder 8 in the groove of the support frame 5, and the pressure rod 11 is arranged on the inside of the support frame 5, connected with the pressure holder 8 through a pin, Rotating around the pin shaft, the upper end of the pressure rod 11 is connected to the pressure holder 8 through the pressure rod return spring 10 , and the pressure applying plate 14 is installed in the middle of the support frame 5 .

The positioning flange 1 and the top 13 are respectively inserted into the tapered hole of the main shaft of the machine tool through their respective tapered shafts for realizing positioning connection.

One end of the guide post 3 is provided with a thread, which is installed and fixed in the flange hole of the positioning flange 1 through the thread.

The pressure rod 11 is an arc rod, and the outside of the pressure rod 11 is provided with a rubber pad 12 for buffering the clamping force and avoiding damage to the surface of the workpiece by clamping.

A number of connecting screws 15 are provided around the outside of the support frame 5 , and locking nuts 7 are provided on the outside of the support frame 5 and on the pressure adjustment screw 6 for locking the pressure adjustment screw 6 .

The pressure plate 14 is provided with a circular hole in the middle, and arc-shaped grooves and rectangular grooves corresponding to the pressure rod 11 and the guide post 3 are respectively provided on the periphery. The pressure plate 14 is fixedly connected with the support frame 5 by screws.

In actual use:

As shown in Figure 2, when the workpiece is being loaded and clamped, the tailstock of the machine tool applies pressure to the workpiece. At this time, the workpiece will push the pressure plate 14, and then the pressure plate 14 will drive the support frame 5 to move as a whole. At this time , because the conical pressure-applying cover 2 has a taper, the pressure rod 11 will rotate around the pin shaft of the pressure holder 8 during the movement of the pressure rod 11 . At this time, the pressure rod 11 will shrink along the radial direction of the workpiece at the end of the workpiece so as to clamp the shaft workpiece.

When clamping a batch of new workpieces, first loosen the pressure adjusting screw 6 to the maximum position, then install the workpiece through the top, and then adjust the pressure adjusting screw 6 one by one after the workpiece is positioned to obtain the required clamping force. After all the pressure adjustment screws 6 are adjusted, the pressure adjustment screws 6 need to be locked with the lock nut 7. In this way, when workpieces of the same diameter are installed, all workpiece positioning and clamping steps are automatically performed. Top 13 positioning and then The pressure rod 11 exerts a clamping force, and the clamping force is constant.

Claims (9)

1. a kind of lever Automatic-clamping chuck, including locating flange (1), taper pressure cover (2), guide post (3), guide post reset bullet Spring (4), supporting rack (5), tension adjusting screw (6), pressure retainer (8), block (9), press rods resetting spring (10), pressure Bar (11), top (13) and pressure disk (14), it is characterised in that：Described top (13) are arranged in locating flange (1) center, The taper pressure cover (2) passes through top (13), is arranged on locating flange (1), and the locating flange (1) is surrounded by several Guide post (3), the guide post (3) are equipped with guide post resetting spring (4), the pilot hole on support frame as described above (5) pass through guide post (3), On guide post (3), described pressure retainer (8) one end is equipped with tension adjusting screw (6), and support frame as described above (5) is equipped with Groove corresponding with pressure retainer (8), and wear to supporting rack (5) outside corresponding with tension adjusting screw (6) is equipped in groove The hole of side, the pressure retainer (8) are mounted in the groove of supporting rack (5), and adjusting pressure by tension adjusting screw (6) protects The position of frame (8) is held, block (9) is set on pressure retainer (8) upper end, supporting rack (5), for limiting pressure retainer (8) in the groove of supporting rack (5), the press rods (11) are arranged on the inside of supporting rack (5), pass through axis pin and pressure retainer (8) it connects, rotated around axis pin, press rods (11) upper end passes through press rods resetting spring (10) and pressure retainer (8) Connection, it is intermediate that the pressure disk (14) is mounted on supporting rack (5).

2. a kind of lever Automatic-clamping chuck according to claim 1, it is characterised in that：The locating flange (1) and Top (13) are inserted into the main shaft bellmouth of lathe respectively by respective tapered shaft, are coupled for realizing positioning.

3. a kind of lever Automatic-clamping chuck according to claim 1, it is characterised in that：Described guide post (3) one end is set There is screw thread, is fixed on by screw thread in the flange hole of locating flange (1).

4. a kind of lever Automatic-clamping chuck according to claim 1, it is characterised in that：The press rods (11) are arc Shape bar.

5. a kind of lever Automatic-clamping chuck according to claim 1, it is characterised in that：On the outside of the press rods (11) Equipped with rubber pad (12), workpiece surface is destroyed for buffering clamping force and avoiding clamping.

6. a kind of lever Automatic-clamping chuck according to claim 1, it is characterised in that：On the outside of support frame as described above (5) It is surrounded by several attachment screws (15).

7. a kind of lever Automatic-clamping chuck according to claim 1, it is characterised in that：On the outside of support frame as described above (5), Tension adjusting screw (6) is equipped with lock nut (7), is used for tension adjusting screw (6) locking.

8. a kind of lever Automatic-clamping chuck according to claim 1, it is characterised in that：The pressure disk (14) is intermediate It is respectively equipped with arc groove corresponding with press rods (11), guide post (3) and rectangular slot equipped with round hole, surrounding.

9. a kind of lever Automatic-clamping chuck according to claim 1, it is characterised in that：The pressure disk (14) passes through Screw is fixedly connected with supporting rack (5).