CN217492732U

CN217492732U - Automatic cutter holder replacing structure of numerical control vertical lathe

Info

Publication number: CN217492732U
Application number: CN202221653147.7U
Authority: CN
Inventors: 毕洪颖; 闫鹏举; 张聪; 宿蕾; 丁雨青
Original assignee: General Technology Qiqihar Second Machine Tool Co ltd
Current assignee: General Technology Qiqihar Second Machine Tool Co ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-09-27
Anticipated expiration: 2032-06-28

Abstract

The utility model relates to an automatic cutter holder structure of changing of numerical control vertical lathe. The main problem of current automatic change cutter holder structure positioning accuracy not high, poor stability of solving. The connecting body (9) is connected with the tool holder (13) through a plurality of hydraulic pulling claws, each hydraulic pulling claw comprises a gland (12) and a claw piece (10), the gland (12) is connected to the tool holder (13), and the claw piece (10) is connected to the connecting body (9). The automatic cutter holder replacing structure of the numerical control vertical lathe is high in positioning accuracy and good in stability, and the safety of cutter replacement is guaranteed.

Description

Automatic cutter holder replacing structure of numerical control vertical lathe

Technical Field

The utility model relates to a lathe field, the automatic cutter holder structure of changing of numerical control vertical lathe specifically says so.

Background

With the progress of science and technology and the continuous improvement of market demand, the numerical control vertical lathe is developed towards the direction of compound type, automation and high precision by the original traditional structure, but the existing structure for automatically replacing the tool holder has the problems of low positioning precision and poor stability, and cannot adapt to the development of the numerical control vertical lathe.

Disclosure of Invention

In order to overcome the not enough of current automatic change cutter holder structure positioning accuracy not high, poor stability, the utility model provides an automatic change cutter holder structure of numerical control vertical lathe, this automatic change cutter holder structure positioning accuracy of numerical control vertical lathe is high, stability is good, has guaranteed the security of tool changing.

The technical scheme of the utility model is that: the utility model provides an automatic cutter holder structure of changing of numerical control vertical lathe, includes connector, cutter holder, draw the claw through a plurality of hydraulic pressure between connector and the cutter holder and link to each other, hydraulic pressure draws the claw to include gland and claw lamella, and wherein the gland is connected on the cutter holder, and the claw lamella is connected on the connector.

And a positioning key is arranged between the connecting body and the tool holder.

The tool holder is connected with a taper shank, the connecting body is connected with a positioning taper sleeve, and the positioning taper sleeve is matched with the taper shank through a conical surface.

The connector is connected with a broaching claw broach oil inlet pipe, the broaching claw broach oil inlet pipe is connected with a broach oil inlet channel, and the hydraulic broaching claw pulls the tool holder to move towards the connector through the broaching claw broach oil inlet pipe and the broach oil inlet channel.

The hydraulic clamping jaw tool retracting device is characterized in that the connecting body is connected with a clamping jaw tool retracting oil inlet pipe, the clamping jaw tool retracting oil inlet pipe is connected with a tool retracting oil inlet channel, and oil is fed through the clamping jaw tool retracting oil inlet pipe and the tool retracting oil inlet channel, so that the hydraulic clamping jaw loosens the tool holder.

And one end of the taper shank opposite to the tool holder is connected with a tool withdrawal oil cylinder.

The utility model discloses following beneficial effect has: by adopting the scheme, the connecting body and the tool holder are tensioned through the hydraulic pulling claw, and the hydraulic pulling claw has the characteristic of self-locking, so that the high stability and safety of tool changing are ensured; the positioning taper sleeve is matched with the taper shank, so that the precise positioning of the tool holder is realized; the cooperation of upper and lower navigation key prevents that the cutter holder from taking place to twist reverse under the effect of cutting force, and the navigation guarantee measure of upper and lower navigation key and location taper sleeve and taper shank has further guaranteed the high stability and the security of tool changing simultaneously. The action time of the tool retracting oil cylinder is delayed to pull the claw by hydraulic pressure, so that the hydraulic claw is prevented from being damaged. After the tool holder is picked up in place, the proximity switch sends a signal, the machine tool enters a normal state and can perform the next action, otherwise, the machine tool is in a locking state, the next action is not allowed, and the safety of tool changing is ensured.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure, 1-a tool retracting oil cylinder oil inlet pipe, 2-a claw broach oil inlet pipe, 3-a ram, 4-a tool retracting oil cylinder, 5-a proximity switch, 6-a positioning key, 7-a taper shank, 8-a claw retracting oil inlet pipe, 9-a connector, 10-a claw flap, 11-a positioning taper sleeve, 12-a gland, 13-a tool holder, 14-a broach oil inlet channel and 15-a tool retracting oil inlet channel.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1, the automatic tool holder replacing structure for the numerical control vertical lathe comprises a ram 3, a connecting body 9 and a tool holder 13, wherein the connecting body 9 is connected with the ram 3 through a screw. The connecting body 9 is connected with the tool holder 13 through a plurality of hydraulic drawing claws, and the hydraulic connecting claws are uniformly distributed along the circumferential direction. The hydraulic drawing claw comprises a pressing cover 12 and a claw piece 10, wherein the pressing cover 12 is connected to a tool holder 13, the claw piece 10 is connected to the connecting body 9, and the tool holder 13 is connected with the connecting body 9 through the connection between the claw piece 10 and the pressing cover 12. Meanwhile, a positioning key 6 is arranged between the connecting body 9 and the tool holder 13, an upper positioning key in the positioning key 6 is connected to the connecting body 9, and a lower positioning key is connected to the tool holder 13, so that the positioning of the connecting body 9 and the tool holder 13 is realized.

The external part of the connector 9 is connected with a broach drawing oil inlet pipe 2 and a broach withdrawing oil inlet pipe 8, the internal part of the connector 9 is provided with a broach drawing oil inlet channel 14 and a broach withdrawing oil inlet channel 15, wherein the broach drawing oil inlet pipe 2 is connected with the broach drawing oil inlet channel 14, and the broach withdrawing oil inlet pipe 8 is connected with the broach withdrawing oil inlet channel 15. When the oil inlet pipe 2 of the broaching tool and the oil inlet channel 14 of the broaching tool are fed, the hydraulic broaching tool pulls the claw flap 10 tightly, a pulling force is generated on the gland 12, the maximum clamping force is obtained in the minimum space, the claw flap 10 is engaged and pulls the gland 12 tightly, and the tool holder 13 is pulled to move towards the direction of the connecting body 9. The hydraulic pulling claw is self-locked under hydraulic force, and the stability of tool changing is ensured. When the claw is pulled to withdraw the cutter oil inlet pipe 8 and the cutter withdrawing oil inlet channel 15 is fed, the claw flap 10 is gradually separated from the gland 12, so that the hydraulic claw can be pulled to loosen the cutter holder 13.

The center of the tool holder 13 is connected with a taper shank 7, the connecting body 9 is connected with a positioning taper sleeve 11, and the positioning taper sleeve 11 is matched with the taper shank 7 through a taper surface. One end of the taper shank 7 opposite to the tool holder 13 is connected with a tool retracting oil cylinder 4, a piston of the tool retracting oil cylinder 4 is connected with the end part of the taper shank 7, the tool retracting oil cylinder 4 is connected with an oil inlet pipe 1 of the tool retracting oil cylinder, and the piston can be pushed to move by oil fed from the oil inlet pipe 1 of the tool retracting oil cylinder, so that the taper shank 7 is pushed to move, and the taper shank 7 is separated from the positioning taper sleeve 11. The cutter withdrawing oil cylinder 4 is started when the cutter is withdrawn, and oil from the cutter withdrawing oil cylinder 4 is arranged in a delaying mode and is later than the acting time of the claw piece 10 and the gland 12.

When a machine tool sends a tool taking instruction, the ram moves to a designated position, the drawing claw and drawing tool oil inlet pipe 2 feeds oil, the claw clack 10 deforms in the gland 12 and is forcefully generated, and then the tool holder 13 is pulled to move along the direction approaching the ram 3, at the moment, under the action of the positioning taper sleeve 11 and the taper shank 7, the tool holder 13 is radially and gradually positioned while moving, at the moment, the upper positioning key and the lower positioning key which are allocated in advance are matched, and the tool holder is prevented from twisting under the action of cutting force. The proximity switch 5 with the adjusted action distance sends a signal, the knife taking action is completed at the moment, the machine tool enters a normal state and can perform the next action, otherwise, the machine tool is in a locking state and is not allowed to perform the next action.

When the machine tool retracts, the claw retracting oil inlet pipe 8 feeds oil, the claw flap 10 restores to deform, the pulling force gradually decreases until the claw flap disappears, and the claw flap 10 is gradually separated from the gland 12. And at the moment, the taper sleeve 11 and the taper shank 7 are not completely separated due to insufficient external force. The tool retracting cylinder oil inlet pipe 1 is delayed relative to the hydraulic pulling claw to feed oil, the piston of the tool retracting cylinder 4 is pushed to move forwards, the taper sleeve 11 and the taper shank 7 are completely separated under the pushing of the piston, the tool retracting is ensured to be complete, the separation distance exceeds the action range of the proximity switch 5, the proximity switch generates a signal, and the tool retracting work is completed at the moment.

Claims

1. The utility model provides an automatic cutter holder structure of changing of numerical control vertical lathe, includes connector (9), cutter holder (13), its characterized in that: the hydraulic pressure draws the claw to link to each other through a plurality of hydraulic pressure between connector (9) and cutter holder (13), hydraulic pressure draws the claw to include gland (12) and claw lamella (10), and wherein gland (12) are connected on cutter holder (13), and claw lamella (10) are connected on connector (9).

2. The automatic tool holder replacing structure of the numerical control vertical lathe as claimed in claim 1, wherein: and a positioning key (6) is arranged between the connecting body (9) and the tool holder (13).

3. The automatic tool holder replacing structure of the numerical control vertical lathe according to claim 2, wherein: the tool holder (13) is connected with a taper shank (7), the connecting body (9) is connected with a positioning taper sleeve (11), and the positioning taper sleeve (11) is matched with the taper shank (7) through a conical surface.

4. The automatic tool holder replacing structure of the numerical control vertical lathe as claimed in claim 3, wherein: the hydraulic broaching tool holder is characterized in that a broaching claw broach oil inlet pipe (2) is connected to the connecting body (9), the broaching claw broach oil inlet pipe (2) is connected to a broaching tool oil inlet channel (14), and oil is fed through the broaching claw broach oil inlet pipe (2) and the broaching tool oil inlet channel (14), so that the hydraulic broaching claw broach tool holder (13) moves towards the direction of the connecting body (9).

5. The automatic tool holder replacing structure of the numerical control vertical lathe as claimed in claim 4, wherein: the hydraulic clamping jaw unclamping tool holder is characterized in that a clamping jaw unclamping oil inlet pipe (8) is connected to the connecting body (9), the clamping jaw unclamping oil inlet pipe (8) is connected to an unclamping oil inlet channel (15), and oil is fed through the clamping jaw unclamping oil inlet pipe (8) and the unclamping oil inlet channel (15), so that the hydraulic clamping jaw unclamps the tool holder (13).

6. The automatic tool holder replacing structure of the numerical control vertical lathe as claimed in claim 5, wherein: one end of the taper shank (7) opposite to the tool holder (13) is connected with a tool withdrawal oil cylinder (4).