CN214322513U

CN214322513U - Main shaft with detachable rotary guide sleeve

Info

Publication number: CN214322513U
Application number: CN202120350886.8U
Authority: CN
Inventors: 林新泽; 沈思跃; 朱焱平
Original assignee: Jinshang Precision Machine Tool Zhejiang Co ltd
Current assignee: Jinshang Precision Machine Tool Zhejiang Co ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-10-01
Anticipated expiration: 2031-02-07

Abstract

The utility model relates to a main shaft that possesses dismantled and assembled rotatory guide pin bushing, it includes the main shaft frame, arranges the mandrel in the main shaft frame in, arranges the collet chuck that is used for the clamping work piece in the mandrel in, still including connecting in the outside subassembly of supporting of mandrel, support the subassembly including coaxial can dismantle connect in the connecting piece of mandrel outer wall, connect in the connecting piece and be coaxial guide pin bushing with the mandrel, rotate connect in the guide pin bushing outer wall and can dismantle the fixed cover of connecting in the main shaft frame, the guide pin bushing is offered and is used for wearing to establish axle type work piece and is coaxial guiding hole with the mandrel, the guiding hole communicates in the collet chuck center and runs through and keep away from a mandrel terminal surface in the guide pin bushing. This application has the effect that connects the guide pin bushing and promote work piece job stabilization nature.

Description

Main shaft with detachable rotary guide sleeve

Technical Field

The application relates to the field of machine tool parts, in particular to a spindle with a detachable rotary guide sleeve.

Background

The machine tool spindle is generally used for clamping a shaft workpiece to be machined and driving the workpiece to make rotary motion in the machining process. In order to clamp the workpiece, the main shafts respectively comprise a clamping mechanism, and the clamping mechanism can be a three-jaw chuck or a spring chuck.

When the axial length of the work piece of required clamping is longer, generally choose the main shaft that has collet chuck for use, this main shaft includes the main shaft frame, it is horizontal mandrel to be connected with in the main shaft frame internal rotation, fixed mounting has the drive mandrel around its self axial pivoted actuating mechanism on the main shaft frame, collet chuck arranges the inside of mandrel in, collet chuck is including giving as security the pipe, integrated into one piece is in giving as security pipe one end and along giving as security three clamp lamella that pipe circumference evenly set up, the inner wall that is close to clamp lamella one end at the mandrel is provided with the inclined plane, then produce relative axial displacement back between collet chuck and mandrel, collet chuck's clamp lamella can make three clamp lamella draw close towards the center under the conflict power of mandrel tip slope inner wall, thereby play clamping role to the work piece.

In view of the above-mentioned related art, the inventor believes that when a collet chuck is used to clamp a long shaft workpiece, a part of the workpiece may protrude outside the collet chuck, and if the length of the workpiece protruding from the collet chuck is long, the protruding part of the workpiece may be thrown during the rotation of the mandrel, thereby reducing the stability of clamping the workpiece.

SUMMERY OF THE UTILITY MODEL

In order to promote the stability to among the major axis class work piece course of working, this application provides a main shaft that possesses dismantled and assembled rotating guide bush.

The application provides a main shaft that possesses dismantled and assembled rotatory guide pin bushing adopts following technical scheme:

the utility model provides a main shaft that possesses dismantled and assembled rotatory guide pin bushing, includes the main shaft frame, arranges the mandrel in the main shaft frame, arranges the collet chuck that is used for the clamping work piece in the mandrel in, still including connecting in the outside subassembly of supporting of mandrel, support the subassembly including coaxial can dismantle connect in the connecting piece of mandrel outer wall, connect in the connecting piece and be coaxial guide pin bushing with the mandrel, rotate connect in the guide pin bushing outer wall and can dismantle the fixed cover of connecting in the main shaft frame, the guide pin bushing offer be used for wearing to establish axle type work piece and be coaxial guiding hole with the mandrel, the guiding hole communicates in the collet chuck center and runs through in the guide pin bushing and keeps away from a mandrel terminal surface.

Through adopting above-mentioned technical scheme, rely on the guide pin bushing of connecting in the mandrel outer wall can dismantle, can utilize guide pin bushing and fixed cover can stretch out the part in collet chuck to major axis class work piece and play the supporting role, reduce the work piece and being driven the whipping degree of rotatory in-process by the mandrel when clamping major axis class work piece to promote the stability of work piece in the course of working, promote the precision of work piece processing, also can change the guide pin bushing according to different axle class work pieces.

Optionally, the outer wall of the mandrel close to one end of the collet chuck is provided with an external thread, and the connecting piece is sleeved and screwed on the external thread.

By adopting the technical scheme, the connecting piece is convenient to mount or dismount on the outer wall of the mandrel, so that the guide sleeve can be conveniently replaced according to different actual workpieces, and the guide sleeve and the mandrel can be kept in a stable connection relationship.

Optionally, the connecting piece includes threaded connection in the mounting disc of external screw thread, integrated into one piece in the mounting disc outer wall and the connection pad that the diameter is greater than the mounting disc, the connection pad terminal surface is parallel with the mandrel terminal surface, the guide pin bushing can be dismantled and connect in the connection pad.

By adopting the technical scheme, in the installation process, the installation disc can be screwed to the outer wall of the mandrel firstly, the relative position between the installation disc and the mandrel is determined, and the guide sleeve suitable for the corresponding workpiece is selected to be installed on the connecting disc, so that the position relation between the guide sleeve and the mandrel can meet the installation requirement.

Optionally, the end face of the connecting member is integrally formed with a positioning ring abutting against the end face of the mandrel facing one side of the guide sleeve.

Through adopting above-mentioned technical scheme, swivel connected coupler's in-process, when the retaining ring butt in mandrel terminal surface, then confirmed the relative mounted position between connecting piece and the mandrel outer wall, avoid can rotating the head at swivel connected coupler's in-process, perhaps rotate not in place, be convenient for fix a position the connecting piece in the position of mandrel outer wall.

Optionally, the connecting disc is provided with a plurality of connecting holes along the circumferential direction thereof, the end surface of the guide sleeve close to the mandrel is provided with mounting holes corresponding to the mounting holes one to one, and fixing bolts in threaded connection with the mounting holes penetrate through the connecting holes.

By adopting the technical scheme, the guide sleeve can be stably fixed on the connecting disc through the fixing bolt, the guide sleeve and the connecting disc are kept coaxial, the subsequent clamping stability of the workpiece is improved, and the machining precision of the workpiece can also be improved.

Optionally, the positioning ring is provided with a plurality of positioning holes along the circumferential direction thereof, and the positioning holes are penetrated and connected with positioning bolts abutting against the end face of the mandrel in a threaded manner.

By adopting the technical scheme, according to different machine tools or different workpieces, the mounting position between the connecting piece and the mandrel can be adjusted by rotating the positioning bolt, the extending distance of the positioning bolt is changed, and the position of the positioning ring on the outer wall of the mandrel can be adjusted, so that the whole mounting requirement is met.

To sum up, this application includes following at least one kind and possesses the useful technological effect of main shaft of dismantled and assembled rotatory guide pin bushing:

1. the guide sleeve can be used for supporting the outer wall of a long-shaft workpiece extending out of the mandrel, so that the stability of the workpiece in the machining process is improved, and the machining precision of the workpiece is improved;

2. the positioning ring on the connecting piece is utilized to position the connecting piece on the outer wall of the mandrel, and the guide sleeve can be replaced according to different workpieces by utilizing the connecting piece.

Drawings

Fig. 1 is a sectional view of a spindle having a detachable rotary guide bush according to the present embodiment.

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

Fig. 3 is a view of the main shaft with the detachable rotary guide sleeve of the present embodiment, mainly used for showing the driving mechanism.

Description of reference numerals: 1. a main shaft bracket; 2. a mandrel; 3. a collet chuck; 12. a support assembly; 121. a connecting member; 122. a guide sleeve; 123. fixing a sleeve; 26. mounting a disc; 27. a docking tray; 28. connecting holes; 29. fixing the bolt; 291. mounting holes; 30. a rotating bearing; 33. mounting a bracket; 34. a hold-down bolt; 35. a guide hole; 4. a positioning ring; 41. positioning holes; 42. positioning the bolt; 131. a stator coil; 132. and a rotor coil.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a main shaft with a detachable rotary guide sleeve. Referring to fig. 1, the main shaft with the detachable rotary guide sleeve comprises a main shaft frame 1 fixedly installed on a frame, a spindle 2 is arranged in the main shaft frame 1 in a penetrating mode, and a driving mechanism for driving the spindle 2 to rotate around the axial direction of the spindle 2 is fixedly installed on the main shaft frame 1. The mandrel 2 is internally provided with a collet chuck 3 for clamping long-shaft workpieces, and in order to support and stabilize the part of the workpiece extending out of the collet chuck 3, a supporting component 12 is arranged between the outer wall of the mandrel 2 and the main shaft frame 1, so that the workpiece extending out of the collet chuck 3 can penetrate through the supporting component 12 to be processed by a cutter.

The supporting component 12 comprises a connecting piece 121 coaxially detachably connected to the outer wall of the mandrel 2, in order to facilitate the detachment or installation of the connecting piece 121, an external thread is arranged on the outer wall of the mandrel 2 close to one end of the supporting component 12, the connecting piece 121 is detachably connected with a guide sleeve 122, and the outer wall of the guide sleeve 122 is rotatably connected with a fixing sleeve 123 fixedly connected to the main shaft frame 1.

Referring to fig. 2, the connecting member 121 includes a mounting plate 26 that is disc-shaped and can be sleeved with threads and connected to the outer wall of the mandrel 2, the mounting plate 26 is in thread fit with external threads, a butt-joint plate 27 with a diameter larger than the outer diameter of the mounting plate 26 is integrally formed on the outer wall of the mounting plate 26, the butt-joint plate 27 is disc-shaped, and the mounting plate 26 and the mandrel 2 are coaxially arranged. The end face of the butt joint disc 27 is provided with 6 connecting holes 28 along the circumferential direction, the central axial direction of the connecting holes 28 is parallel to the central axial direction of the mandrel 2, and a fixing bolt 29 for being in threaded connection with the guide sleeve 122 penetrates through each connecting hole 28.

Referring to fig. 1 and 2, one end surface of the guide sleeve 122 close to the mandrel 2 is provided with mounting holes 291 corresponding to the connecting holes 28 one to one along the circumferential direction thereof, and in the connecting process, the fixing bolt 29 is inserted into the connecting holes 28 and is in threaded connection with the mounting holes 291, so that the guide sleeve 122 and the docking tray 27 can be fixed, and the guide sleeve 122 and the docking tray 27 are coaxially arranged. In order to improve the stability of supporting the workpiece, the outer wall of the end, far away from the mandrel 2, of the guide sleeve 122 is rotatably connected with a fixing sleeve 123 which is coaxially arranged with the guide sleeve 122, a rotating bearing 30 is arranged between the inner wall of the fixing sleeve 123 and the outer wall of the guide sleeve 122, the outer ring of the rotating bearing 30 is fixedly connected to the inner wall of the fixing sleeve 123, and the inner ring of the rotating bearing 30 is fixedly connected to the outer wall of the guide sleeve 122. An installation bracket 33 with an annular cross section is fixedly installed on the main shaft frame 1, after the guide sleeve 122 and the butt joint disk 27 are fixed, one end surface of the fixed sleeve 123 facing the mandrel 2 abuts against the installation bracket 33, and a plurality of compression bolts 34 which are connected with the installation bracket 33 through threads are uniformly arranged on the fixed sleeve 123 along the circumferential direction of the fixed sleeve, so that the fixed sleeve 123 can be fixed on the installation bracket 33. In order to normally mount the guide sleeve 122, a guide hole 35 for penetrating the shaft workpiece and coaxial with the mandrel 2 and the collet chuck 3 is formed in the center of the guide sleeve 122, and the guide hole 35 is communicated with the center of the collet chuck 3 and penetrates through two end faces of the guide sleeve 122.

Referring to fig. 1 and 2, in order to determine the installation position of the guide sleeve 122, a positioning ring 4 coaxial with the mandrel 2 is integrally formed at one end of the mounting disc 26, the radial direction of the positioning ring 4 is perpendicular to the direction of the central axis 2 of the mandrel 2, in the process of screwing the mounting disc 26, one side of the positioning ring 4 facing the mandrel 2 abuts against the end surface of the mandrel 2, the installation position of the mounting disc 26 on the outer wall of the mandrel 2 is determined, a plurality of positioning holes 41 are formed in the positioning ring 4 along the circumferential direction thereof, positioning bolts 42 capable of abutting against the end surface of the mandrel 2 are inserted into the positioning holes 41 and screwed, and thus the distance that the positioning bolts 42 extend out of the positioning ring 4 can be selected according to the actual installation position requirement.

Referring to fig. 3, the driving mechanism for driving the spindle 2 to rotate around its own axis is the same as the driving mechanism for the electric spindle, and includes a rotor coil 132 coaxially and fixedly connected to the outer wall of the spindle 2, a stator coil 131 for generating a fixed magnetic field is fixed inside the spindle frame 1, the stator coil 131 surrounds the outer edge of the rotor coil 132, and a brush is electrically connected to the end of the rotor coil 132, so that the rotor coil 132 can rotate around its own axis with the spindle 2 when the brush and the stator coil 131 are both energized.

The implementation principle of the spindle with the detachable rotary guide sleeve in the embodiment of the application is as follows: when a long-shaft workpiece needs to be machined, the mounting disc 26 is screwed to the outer wall of the mandrel 2, after the end face of the positioning ring 4 or the positioning bolt 42 abuts against the end face of the mandrel 2, the positions of the mounting disc 26 and the butt-joint disc 27 on the outer wall of the mandrel 2 are determined, then the guide sleeve 122 and the butt-joint disc 27 are fixedly connected through the fixing bolt 29, the fixing sleeve 123 abuts against the mounting bracket 33, the fixing sleeve 123 is fixedly connected to the mounting bracket 33 through the compression bolt 34, the workpiece penetrates through the guide hole 35 of the guide sleeve 122 and extends into the spring chuck 3, the spring chuck 3 clamps the workpiece, and the guide sleeve 122 and the fixing sleeve 123 support the workpiece, and in the machining process, the workpiece is driven to rotate by the mandrel 2 and the spring chuck 3 and is supported by the guide sleeve 122 and the fixing sleeve 123.

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. The utility model provides a main shaft that possesses dismantled and assembled rotatory guide pin bushing, includes main shaft frame (1), arranges mandrel (2) in main shaft frame (1), arranges collet chuck (3) that are used for the clamping work piece in mandrel (2) in, its characterized in that: still including connecting in mandrel (2) outside support subassembly (12), support subassembly (12) including coaxial detachable connection in connecting piece (121) of mandrel (2) outer wall, connect in connecting piece (121) and be coaxial guide pin bushing (122) with mandrel (2), rotate and connect in guide pin bushing (122) outer wall and can dismantle fixed cover (123) of connecting in main shaft frame (1), guide pin bushing (122) are seted up and are used for wearing to establish axle type work piece and be coaxial guiding hole (35) with mandrel (2), guiding hole (35) communicate in collet chuck (3) center and run through in guide pin bushing (122) keep away from a mandrel (2) terminal surface.

2. The spindle of claim 1, wherein: the outer wall of one end, close to the collet chuck (3), of the mandrel (2) is provided with external threads, and the connecting piece (121) is sleeved with the external threads in a threaded mode.

3. The spindle of claim 2, wherein: connecting piece (121) including threaded connection in mounting disc (26) of external screw thread, integrated into one piece in mounting disc (26) outer wall and diameter be greater than butt joint dish (27) of mounting disc (26), butt joint dish (27) terminal surface is parallel with mandrel (2) terminal surface, guide pin bushing (122) can be dismantled and connect in butt joint dish (27).

4. The spindle of claim 3, wherein: the end face of the connecting piece (121) is integrally provided with a positioning ring (4) which is abutted against the end face of one side of the mandrel (2) facing the guide sleeve (122).

5. The spindle with the detachable rotary guide sleeve as set forth in claim 3 or 4, wherein: the butt joint disc (27) is provided with a plurality of connecting holes (28) along the circumferential direction, one end face of the guide sleeve (122) close to the mandrel (2) is provided with mounting holes (291) corresponding to the mounting holes (291) in a one-to-one mode, and fixing bolts (29) in threaded connection with the mounting holes (291) penetrate through the connecting holes (28).

6. The spindle of claim 4, wherein: the positioning ring (4) is provided with a plurality of positioning holes (41) along the circumferential direction, and positioning bolts (42) which are abutted to the end face of the mandrel (2) penetrate through the positioning holes (41) and are in threaded connection.