CN214722548U

CN214722548U - Dynamic built-in static guide sleeve

Info

Publication number: CN214722548U
Application number: CN202121254885.XU
Authority: CN
Inventors: 朱焱平
Original assignee: Jinshang Precision Machine Tool Zhejiang Co ltd
Current assignee: Jinshang Precision Machine Tool Zhejiang Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-11-16
Anticipated expiration: 2031-06-04

Abstract

The application relates to a power built-in static guide sleeve, which comprises a fixing sleeve, a clamping device and an adjusting device, wherein the fixing sleeve is connected to a machine tool and is coaxial with a main shaft, the clamping device is arranged in the fixing sleeve and is used for clamping or loosening a workpiece, the adjusting device is arranged in the fixing sleeve and is used for controlling the clamping device to clamp or loosen, the clamping device comprises a clamping piece which is connected in the fixing sleeve in a sliding mode, and the adjusting device controls the clamping piece to move in the fixing sleeve to clamp or loosen. This application has the effect that promotes slender axles class work piece processingquality.

Description

Dynamic built-in static guide sleeve

Technical Field

The application relates to the technical field of guide sleeves, in particular to a static guide sleeve with built-in power.

Background

When a shaft workpiece needs to be machined, a machine tool is generally used for clamping to perform a rotary action, and if a long shaft workpiece needs to be machined, the clamping effect of a main shaft of the machine tool on the workpiece is weakened, so that the workpiece cannot keep stable rotation in the machining process, therefore, when the long shaft workpiece is machined, a guide sleeve which is coaxial with the main shaft needs to be arranged to support a workpiece section extending out of the main shaft, and the machining quality of the workpiece is improved.

When long-shaft workpieces are machined, the workpieces are arranged in a main shaft and a guide sleeve of a machine tool, and after a section of material is machined, a material pushing device is arranged at the rear end of the main shaft to apply forward thrust to the workpieces, so that the unmachined part extends out of the end face of the guide sleeve.

In view of the above-mentioned related art, the inventor believes that if the diameter of the long-axis workpiece to be machined is small, if the long-axis workpiece is pushed by the pusher, the normal machining is affected if the deformation of the long-axis workpiece occurs.

SUMMERY OF THE UTILITY MODEL

In order to be suitable for the processing of slender axles class work piece, this application provides a built-in static guide pin bushing of power.

The application provides a built-in static guide pin bushing of power adopts following technical scheme:

a static guide sleeve with built-in power comprises a fixed sleeve which is connected to a machine tool and is arranged coaxially with a main shaft, a clamping device which is arranged in the fixed sleeve and is used for clamping a workpiece, and an adjusting device which is arranged in the fixed sleeve and is used for controlling the clamping device to clamp or loosen.

By adopting the technical scheme, when the slender shaft workpiece sequentially penetrates through the main shaft and the clamping device, and when the part of the workpiece extending out of the clamping device is machined, the main shaft on the machine tool clamps the workpiece and drives the workpiece to rotate, the clamping device supports the workpiece, and after the workpiece extending out of the clamping device is machined, the adjusting device controls the clamping piece to clamp the workpiece, then the main shaft loosens the workpiece and moves backwards to be as long as the workpiece to be machined, and then the main shaft clamps the workpiece and moves towards one side of the guide sleeve, so that the workpiece can extend out of the clamping piece to be away from one side end face of the main shaft.

Optionally, the clamping device further includes a guide sleeve fixedly connected in the fixed sleeve, the center of the guide sleeve penetrates through two end faces of the guide sleeve, a guide inclined plane is arranged on the inner wall of the guide sleeve, the outer wall of the clamping piece abuts against the guide inclined plane, and the adjusting device controls the clamping piece to move along the guide inclined plane so as to clamp or loosen the workpiece.

Through adopting above-mentioned technical scheme, under adjusting device's effect, can drive the holder and remove in the uide bushing, rely on the effect on direction inclined plane to exert the power towards the center to the holder to can play clamping effect to the work piece that passes the holder, make the process of pressing from both sides tightly and unclamping more be convenient for control, also can guarantee the clamp force to the work piece simultaneously.

Optionally, the clamping member is a collet chuck, and an outer wall of the collet chuck is inclined and abuts against the guide inclined surface.

Through adopting above-mentioned technical scheme, utilize collet chuck to make overall structure compacter, also can directly assemble the use, rely on the effect on direction inclined plane to exert the clamp force towards the center to collet chuck to play better clamping effect to the work piece.

Optionally, the adjusting device includes a piston member axially slidably connected to the fixing sleeve along a center of the fixing sleeve, and a power mechanism for pushing the piston member to control the movement of the clamping member, and the piston member is disposed between the clamping member and the main shaft.

Through adopting above-mentioned technical scheme, under power unit's application of force, the piston spare can be along its axial displacement in fixed cover, can promote the holder at the removal in-process and remove, makes the holder can loosen or press from both sides tightly the work piece, is more convenient for carry out process control through the drive to the piston spare.

Optionally, the power mechanism includes a cylinder body fixedly connected to the fixing sleeve and two air inlet pipes communicated with the cylinder body, the cylinder body is provided with air inlet ports in one-to-one correspondence with the air inlet pipes, the piston member is connected in the cylinder body in a sealing and sliding manner, and the piston member is arranged inside the cylinder body and divides the cylinder body into two pushing chambers respectively communicated with one of the air inlet ports.

Through adopting above-mentioned technical scheme, utilize the intake pipe of difference to admit air in the promotion cavity that the air inlet corresponds, then can drive the piston spare and carry out two-way movement, the control that can be better to the process of whole regulation, simultaneously under the condition of pressurize, can continuously keep the piston spare to be located one of them position unchangeable to promote the stability of centre gripping in-process.

Optionally, the piston member includes a sliding member slidably connected to the inner wall of the cylinder, and a pushing member detachably connected to the sliding member and used for pushing the clamping member to move, and the pushing member changes an initial distance from the clamping member by a position on the sliding member.

By adopting the technical scheme, the initial distance between the pushing piece and the clamping piece can be changed by utilizing the detachable pushing piece, so that the initial position of the clamping piece in the fixed sleeve can be changed, the initial clamping force of the clamping piece is realized, meanwhile, the pushing distance of the pushing piece to the clamping piece is not influenced, and the application range of the clamping piece is widened.

Optionally, the sliding part is provided with a mounting groove, the inner wall of the mounting groove is in threaded connection with the outer wall of the pushing part, and the pushing part is provided with a locking assembly for tightly abutting against the inner wall of the mounting groove.

By adopting the technical scheme, when the initial distance between the pushing piece and the clamping piece needs to be adjusted, the pushing piece rotates in the mounting groove, the position of the pushing piece in the mounting groove can be changed by means of threads, and the adjustment convenience of the pushing piece is improved.

Optionally, the locking assembly includes a locking member slidably connected to the pushing member and capable of abutting against the inner wall of the mounting groove, and a pressing member slidably connected to the pushing member and capable of pushing the locking member to abut against the side wall of the mounting groove.

Through adopting above-mentioned technical scheme, after the regulation of completion impeller position, utilize the pressurization piece can exert the effect to retaining member to make the retaining member can move towards the inner wall of mounting groove and support tightly in.

Optionally, the guide way that is parallel rather than the axial is seted up to the holder lateral wall, along axial fixity connect in the uide bushing inner wall and arrange the guide bar in the guide way, guide bar is along uide bushing axis sliding connection in guide way.

Through adopting above-mentioned technical scheme, rely on the limiting displacement of guide bar and guide way, make the holder can remain stable at the removal in-process, promote the clamping stability to the work piece.

Optionally, the fixed sleeve and the guide sleeve are provided with oil guide passages communicated with each other, and the oil guide passages on the guide sleeve are communicated between the guide sleeve and the clamping piece.

Through adopting above-mentioned technical scheme, can add lubricating oil to the gap between uide bushing and the holder through leading the oil way to make the removal of holder in the uide bushing more smooth and easy, also avoid taking place the card and die.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the adjusting device capable of adjusting the clamping piece to clamp or loosen the workpiece is utilized, so that the conveying process is more stable when the slender shaft type workpiece is machined, and the machining quality of the workpiece is improved;

2. the power mechanism and the piston piece can apply power to the pushing piece, so that the clamping piece is driven to move, clamping or loosening of the workpiece is realized, the process can be controlled conveniently, and meanwhile, the position of the clamping piece can be kept stable to improve the clamping stability.

Drawings

Fig. 1 is a partial view of a dynamic built-in stationary guide sleeve of this embodiment.

Fig. 2 is an enlarged view of a portion I of fig. 1.

Fig. 3 is a partial view of a static guide sleeve with built-in power mainly used for embodying an oil guide channel according to the embodiment.

Description of reference numerals: 1. fixing a sleeve; 11. installing a chamber; 2. a clamping device; 21. a clamping member; 211. a clamping flap; 22. a guide sleeve; 221. a guide slope; 3. an adjustment device; 31. a power mechanism; 311. a cylinder body; 312. an air inlet pipe; 32. a piston member; 321. a slider; 322. a pusher member; 4. a main shaft; 5. a coupling pin; 6. a guide bar; 61. a guide groove; 7. a movable cavity; 8. an air inlet; 9. mounting grooves; 10. a separation block; 101. a push chamber; 12. a locking assembly; 121. a locking member; 122. a pressing member; 124. a copper pipe; 13. a touch pad; 14. an elastic ring; 15. an oil guide passage.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a static guide sleeve with built-in power. Referring to fig. 1, the static guide sleeve with built-in power comprises a fixed sleeve 1 which is fixedly connected to a machine tool through a bolt and is arranged coaxially with a main shaft 4 of the machine tool, a clamping device 2 which is arranged in the fixed sleeve 1 and is used for clamping a part of a workpiece extending out of the main shaft 4, and an adjusting device 3 which is arranged in the fixed sleeve 1 and is used for clamping or loosening the clamping device 2, wherein when a slender shaft workpiece is machined, the workpiece is clamped and driven to rotate by the main shaft 4, the adjusting device 3 controls the clamping device 2 to support the workpiece, after a section of machining is completed, the workpiece is clamped by the adjusting device 3, the main shaft 4 loosens the workpiece and moves towards one side away from the fixed sleeve 1, the main shaft 4 clamps the workpiece and loosens the workpiece, and the clamping device 2 moves a distance towards one side of the fixed sleeve 1 with the workpiece, the work piece is caused to protrude from the end of the holding device 2, thereby completing the continuous feeding.

Two end faces of the fixed sleeve 1 penetrate through the machine tool and form an installation cavity 11 inside the machine tool, the inner wall of the fixed sleeve 1 is in a step shape along the axial direction of the fixed sleeve, and one end, close to the main shaft 4, of the fixed sleeve 1 is fixedly connected to the machine tool through bolts.

The clamping device 2 comprises a guide sleeve 22 arranged in the mounting cavity 11 of the fixed sleeve 1, two end faces of the guide sleeve 22 penetrate through and are hollow inside, the outer wall structure of the guide sleeve 22 is consistent with the inner wall shape of the fixed sleeve 1, the outer wall structure and the inner wall structure are in butt joint, and the outer wall of the guide sleeve 22 and the inner wall of the fixed sleeve 1 are in interference fit. A connecting pin 5 is arranged on the side wall of the fixed sleeve 1 in a penetrating way, the connecting pin 5 is parallel to the radial direction of the fixed sleeve 1, one end of the connecting pin 5, which extends out of the inner wall of the fixed sleeve 1, is tightly propped against the outer wall of the guide sleeve 22, and the connecting pin 5 and the fixed sleeve 1 are in interference fit.

The clamping device 2 further comprises a clamping piece 21 arranged inside the guide sleeve 22, the clamping piece 21 is a spring chuck, also called an elastic collet chuck, the spring chuck is composed of a plurality of clamping petals 211, the clamping petals 211 are uniformly distributed in the circumferential direction and are integrally formed near one end of the main shaft 4, a deformation groove along the length direction of the adjacent clamping petals 211 far away from one end of the main shaft 4 is formed between the adjacent clamping petals 211 far away from one end of the main shaft 4, the outer wall of the clamping petals 211 far away from one end of the main shaft 4 is inclined, and the diameter of the clamping petals 211 is gradually reduced along the direction far away from the main shaft 4. And a guide inclined surface 221 which is abutted against the inclined outer wall of the clamping flap 211 is arranged on the inner wall of one end of the guide sleeve 22 far away from the main shaft 4, which is matched with the inclined outer wall of the clamping flap 211. The clamping member 21 is axially slidably connected to the inner wall of the guide sleeve 22 along the center of the guide sleeve 22, and the clamping member 21 can be contracted or expanded by means of the guide slope 221 during the movement of the clamping member 21, so as to clamp or release the workpiece.

In order to improve the stability of the clamping member 21 in the moving process, a guide rod 6 is fixedly arranged on the guide sleeve 22 in a penetrating manner, a guide groove 61 arranged along the length direction of the clamping member 21 is formed in the outer wall of the clamping member 21, and the guide rod 6 is embedded in the guide groove 61 and is connected in a sliding manner.

The adjusting device 3 includes a power mechanism 31 disposed in the mounting cavity 11 of the fixing sleeve 1, a piston member 32 driven by the power mechanism 31 to move along the central axial direction of the fixing sleeve 1, the power mechanism 31 includes a cylinder body 311 fixedly connected to the fixing sleeve 1 or the guide sleeve 22, two ends of the cylinder body 311 penetrate through and are communicated with each other, the central axial direction of the cylinder body 311 is coaxial with the guide sleeve 22, a movable cavity 7 with a diameter larger than the inner diameter of the cylinder body 311 is disposed on the inner side wall of the cylinder body 311, two air inlets 8 communicated with the movable cavity 7 are disposed on the outer side wall of the cylinder body 311, the two air inlets 8 are sequentially disposed along the length direction of the cylinder body 311, the power mechanism 31 further includes air inlet pipes 312 corresponding to the air inlets 8 one to one and communicated with each other, one ends of the air inlet pipes 312 far away from the cylinder body 311 are connected to an air source, which can be an air compressor.

The piston member 32 includes a sliding member 321 slidably connected to the inner wall of the cylinder body 311, the sliding member 321 is annular, a separating block 10 extending into the movable chamber 7 is integrally formed on the outer wall of the sliding member 321, the movable chamber 7 is divided into two pushing chambers 101 respectively communicated with one of the air inlets 8 by the separating block 10, and the sliding member 321, the inner wall of the cylinder body 311 and the inner wall of the movable chamber 7 are both in sealed sliding, which can be realized by arranging a sealing ring therebetween. The piston member 32 further comprises a pushing member 322 detachably connected to the sliding member 321, the pushing member 322 is annular and penetrates through two end faces of the sliding member, and the pushing member 322 and the guide sleeve 22 are coaxial. In order to mount and adjust the position of the pushing member 322 on the inner wall of the sliding member 321, a mounting groove 9 is formed in one side of the sliding member 321 close to the spindle 4, the inner wall of the mounting groove 9 is provided with threads, and the outer wall of the pushing member 322 is connected with the inner wall of the sliding member 321 through threads.

Referring to fig. 2, in order to improve the stability of the pushing member 322 on the inner wall of the sliding member 321, a locking assembly 12 is disposed on the pushing member 322, the locking assembly 12 includes a locking member 121 connected to the pushing member 322 in a radial sliding manner along the pushing member 322, and a pressing member 122 connected to the pushing member 322 in an axial sliding manner along the pushing member 322, ends of the pressing member 122 contacting with the locking member 121 are inclined and contact with each other, the pressing member 122 penetrates through the pushing member 322 towards one side end surface of the spindle 4, when the pressing member 122 moves towards a side away from the spindle 4, the pressing member 121 can be pushed to move towards a side away from the center of the pushing member 322 by the action of an inclined surface, and is pressed against the inner wall of the mounting groove 9, a pressing hole is formed in one side end surface of the pressing member 122 towards the spindle 4, the pressing hole is a blind hole, a flexible copper pipe 124 is connected to the pressing hole in a sealing manner, the copper pipe 124 can be communicated with an oil press, oil injected into the copper pipe 124 by the oil press to push the pressing member 122 to move in the pushing member 322, and the oil pressure is kept stable, so that the locking piece 121 can be kept to abut against the mounting groove 9.

Referring to fig. 1 and 2, the pushing member 322 is disposed between the spindle 4 and the clamping member 21, when the pushing member 322 is forced by the sliding member 321 to move toward one side of the clamping member 21, the pushing member 322 can abut against the clamping member 21 toward one side of the spindle 4 and push the clamping member 21 to move toward the side away from the spindle 4, so as to open the clamping member 21, when the pushing member 322 moves toward the side close to the spindle 4, the end surface of the pushing member 322 is separated from the end surface of the clamping member 21, the clamping member 21 will contract to the original state by its own deformation force and move back toward one side of the spindle 4, for better restoration, the outer wall of one end of the clamping member 21 close to the spindle 4 is fixedly connected with an abutting disc 13, an elastic ring 14 sleeved on the outer wall of the clamping member 21 is disposed between the abutting disc 13 and the opposite side wall of the guiding sleeve 22, and both end surfaces of the elastic ring 14 abut against the opposite side walls of the guiding sleeve 22 and the disc 13 respectively, the elastic ring 14 is made of a rubber material.

Referring to fig. 3, in order to improve the smoothness of the movement of the clamping member 21 in the guide sleeve 22, the fixed sleeve 1 and the guide sleeve 22 are provided with an oil guide passage 15 communicated with each other, an inlet of the oil guide passage 15 penetrates through the outer side wall of the fixed sleeve 1, and an outlet of the oil guide passage 15 penetrates through the inner wall of the guide sleeve 22 and is communicated between the guide sleeve 22 and the clamping member 21.

The implementation principle of the embodiment of the application is as follows: the slender shaft workpiece sequentially passes through the spindle 4 and the clamping piece 21 and extends out of the clamping piece 21, meanwhile, the tail end of the workpiece extends out of the tail end of the spindle 4, when the workpiece is normally machined, the spindle 4 clamps the workpiece, meanwhile, one air inlet pipe 312 is used for introducing air into the pushing chamber 101 close to one side of the spindle 4 to drive the sliding piece 321 and the pushing piece 322 to move away from one side of the spindle 4 and apply force to the clamping piece 21, so that the clamping piece 21 moves away from one side of the spindle 4, the clamping pieces 211 are separated from one another to remove clamping force to the workpiece, after one section of the workpiece is machined, the air inlet pipe 312 far away from one side of the spindle 4 is used for introducing air into the pushing chamber 101 far away from one side of the spindle 4, the sliding piece 321 and the pushing piece 322 move towards one side close to the spindle 4, meanwhile, the clamping piece 21 is reset and retracted to clamp the workpiece, then the spindle 4 loosens the clamping to the workpiece and moves a distance towards one side far away from the clamping piece 21 along the self axis, the spindle 4 clamps the workpiece again, and at the same time, the pushing member 322 moves toward the side of the clamping member 21 again to release the clamping member 21 from the workpiece, and then the spindle 4 moves toward the side of the clamping member 21 to drive the workpiece to extend out of the end of the clamping member 21 for subsequent processing.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A static guide pin bushing of built-in power which characterized in that: including connect in lathe and with fixed cover (1) of main shaft (4) coaxial setting, arrange in fixed cover (1) and be used for carrying out clamping device (2) of centre gripping to the work piece, set up in fixed cover (1) and be used for controlling clamping device (2) and press from both sides tight or adjusting device (3) of unclamping, clamping device (2) are including clamping part (21) of sliding connection in fixed cover (1), adjusting device (3) control clamping part (21) remove in fixed cover (1) in order to realize pressing from both sides tightly or unclamping the work piece.

2. The powered built-in stationary guide sleeve of claim 1, wherein: clamping device (2) still include uide bushing (22) of fixed connection in fixed cover (1), its both ends face is run through at uide bushing (22) center, the inner wall of uide bushing (22) is provided with direction inclined plane (221), holder (21) outer wall butt in direction inclined plane (221), adjusting device (3) control holder (21) are removed along direction inclined plane (221) and are in order to realize the clamp of work piece or loosen.

3. The powered built-in stationary guide sleeve of claim 2, wherein: the clamping piece (21) is a spring chuck, and the outer wall of the spring chuck is inclined and is abutted against the guide inclined plane (221).

4. A dynamic built-in static guide sleeve according to claim 1, 2 or 3, characterized in that: adjusting device (3) include along fixed cover (1) central axial sliding connection in the piston spare (32) of fixed cover (1), promote power unit (31) that piston spare (32) control holder (21) removed, holder (21) and main shaft (4) are arranged in to piston spare (32).

5. The powered built-in stationary guide sleeve of claim 4, wherein: the power mechanism (31) comprises a cylinder body (311) fixedly connected to the fixed sleeve (1) and two air inlet pipes (312) communicated in the cylinder body (311), the cylinder body (311) is provided with air inlets (8) in one-to-one correspondence with the air inlet pipes (312), the piston piece (32) is connected in the cylinder body (311) in a sealing and sliding mode, and the piston piece (32) is arranged inside the cylinder body (311) and divides the cylinder body (311) into two pushing chambers (101) which are respectively communicated with one of the air inlets (8).

6. The powered built-in stationary guide sleeve of claim 5, wherein: the piston piece (32) comprises a sliding piece (321) which is connected with the inner wall of the cylinder body (311) in a sliding way, and a pushing piece (322) which is detachably connected with the sliding piece (321) and is used for pushing the clamping piece (21) to move, wherein the pushing piece (322) changes the initial distance between the pushing piece (322) and the clamping piece (21) through the position on the sliding piece (321).

7. The powered built-in stationary guide sleeve of claim 6, wherein: the sliding piece (321) is provided with a mounting groove (9), the inner wall of the mounting groove (9) is in threaded connection with the outer wall of the pushing piece (322), and the pushing piece (322) is provided with a locking assembly (12) for tightly abutting against the inner wall of the mounting groove (9).

8. The powered built-in stationary guide sleeve of claim 7, wherein: the locking assembly (12) comprises a locking piece (121) which is connected with the pushing piece (322) in a sliding mode and can be abutted against the inner wall of the mounting groove (9), and a pressurizing piece (122) which is connected with the pushing piece (322) in a sliding mode and can push the locking piece (121) to be abutted against the side wall of the mounting groove (9).

9. The powered built-in stationary guide sleeve of claim 2, wherein: guide way (61) that are parallel rather than the axial is seted up to holder (21) lateral wall, along axial fixity connect in uide bushing (22) inner wall and arrange guide bar (6) in guide way (61) in, guide bar (6) are along uide bushing (22) axis sliding connection in guide way (61).

10. The powered built-in stationary guide sleeve of claim 2, wherein: the fixed sleeve (1) and the guide sleeve (22) are provided with oil guide channels (15) which are communicated, and the oil guide channels (15) on the guide sleeve (22) are communicated between the guide sleeve (22) and the clamping piece (21).