CN212444773U - Main shaft mechanism of grinding machine - Google Patents

Abstract

The application relates to a main shaft mechanism of grinding machine, it includes the headstock, the headstock bottom is provided with rotating assembly, rotating assembly includes fixed connection in lathe organism and with the headstock around vertical axial be the unable adjustment base who rotates the connection, connect the locking Assembly who is used for fixing or unclamping the headstock between headstock and unable adjustment base. This application has the effect that can realize carrying out the grinding of different requirements to the work piece.

Description

Main shaft mechanism of grinding machine

Technical Field

The application relates to the field of grinding machines, in particular to a spindle mechanism of a grinding machine.

Background

The grinding machine is a machine tool for grinding the surface of a workpiece by using a grinding tool, and a common machine tool comprises a main shaft for clamping the workpiece and a grinding tool mounting mechanism for mounting the grinding tool, and the workpiece clamped on the main shaft is ground by the grinding tool with different functions.

When the shaft workpiece is machined and ground, machining requirements such as end face grinding, inner circle grinding, outer circle grinding and the like can be met according to actual requirements, but an ordinary machine tool can only basically move in two perpendicular directions due to a grinding tool and a main shaft, and at the moment, if the inner circle or the outer circle of the shaft workpiece needs to be machined to form a conical surface, adaptive machining cannot be conducted.

SUMMERY OF THE UTILITY MODEL

In order to be the conical surface to the processing of work piece, this application provides a main shaft mechanism of grinding machine.

The application provides a main shaft mechanism of grinding machine adopts following technical scheme:

the utility model provides a main shaft mechanism of grinding machine, includes the headstock, the headstock bottom is provided with rotating assembly, rotating assembly includes fixed connection in the lathe organism and with the headstock around vertical axial be the unable adjustment base of rotation connection, connect the locking Assembly who is used for fixing or unclamping the headstock between headstock and unable adjustment base.

Through adopting above-mentioned technical scheme, according to the actual processing demand, through rotating the headstock on the unable adjustment base, can change the relative angle between the work piece of clamping and the grinding apparatus in the headstock, can make the grinding apparatus grind out the conical surface structure when grinding the work piece, promote the machining range that whole equipment was suitable for to after adjusting corresponding position, rely on locking Assembly to fix the position of headstock and play stable processing.

Preferably, the fixed base is provided with a vertical central shaft, and the bottom of the spindle box is provided with a central rotating hole for embedding the rotating central shaft.

Through adopting above-mentioned technical scheme, utilize the center pin and the center to establish the rotation relation with inlaying between the rotating hole, can make the headstock around the axial of center pin rotation above unable adjustment base to be convenient for adjust the relative angle between work piece and the grinding apparatus.

Preferably, the locking assembly comprises a locking bolt which is embedded in the fixed base and penetrates through the spindle box, and a locking nut which is in threaded connection with the locking bolt and supports the spindle box tightly against the upper end face of the fixed base, the spindle box is provided with a limit groove which is arc-shaped by taking the central shaft as the center, and the locking bolt penetrates through the limit groove and is in threaded connection with the locking nut.

Through adopting above-mentioned technical scheme, when needs rotate the headstock, with the headstock around the axial rotation of center pin on unable adjustment base, make locking bolt remove in curved spacing inslot, after removing to appointed position, utilize locking nut to exert to the headstock and support tightly in unable adjustment base's locking nut, play good spacing fixed effect.

Preferably, the headstock is including the centre gripping subassembly that is used for the centre gripping work piece, drive the revolutionary drive assembly of centre gripping subassembly, the roating seat that is used for bearing weight of centre gripping subassembly and drive assembly, the centre gripping subassembly is connected in the roating seat and by the revolutionary mount pad of drive assembly drive, arrange the work piece holder in the mount pad in, connect and be used for being the linkage subassembly that circumference is fixed with mount pad and holder in the mount pad.

Through adopting above-mentioned technical scheme, rely on the work piece holder to carry out the centre gripping with the work piece, utilize the linkage subassembly to make mount pad and holder synchronous rotation, drive mount pad and holder by drive assembly and do the gyration action to the realization is to the drive of work piece, accomplishes good processing.

Preferably, the linkage assembly comprises a linkage seat connected to the mounting seat, and a linkage piece in threaded connection with the linkage seat and capable of abutting against the side wall of the clamping piece.

Through adopting above-mentioned technical scheme, can rely on rotating the linkage piece to support tightly in the lateral wall of holder in order to make the holder can be along with the mount pad synchronous rotation after playing the centre gripping effect to the work piece, can keep the stability of work piece in the course of working, promote the quality of processing, also can play the supporting role by the holder to the work piece at actual processing needs.

Preferably, the driving assembly comprises a driving motor connected to the rotating base and a synchronous transmission assembly connected between an output shaft of the driving motor and the mounting base, and the synchronous transmission assembly comprises a driving belt wheel coaxially and fixedly connected to the output shaft of the driving motor, a driven belt wheel coaxially connected to the outer wall of the mounting base and a synchronous belt meshed with the driving belt wheel and the driven belt wheel.

Through adopting above-mentioned technical scheme, in the course of working, realize the synchronous drive rotation to the mount pad through the synchronous transmission subassembly by the driving motor in the drive assembly to make the holder in the mount pad can rotate in step, just also make the work piece can stably revolve.

Preferably, the mounting seat includes an outer sleeve body rotationally connected to the rotary seat, a driving body fixedly connected to the outer sleeve body, and an inner sleeve body coaxially connected to the driving body and used for mounting the clamping member, the driving assembly drives the driving body to rotate, a first rotating bearing is arranged between the driving body and the inner sleeve body, and a second rotating bearing is arranged between the inner sleeve body and the clamping member.

Through adopting above-mentioned technical scheme, make between driving body and the interior body and between the interior body and the holder all can realize relative rotation, and when needs made outer body and holder linkage, then realize relative fixed with outer body and holder through the linkage subassembly and carry out synchronous rotation, and in actual course of working, when the holder need not synchronous rotation, then loosen the linkage subassembly, can make the holder realize free rotation in the interior body of cover.

Preferably, the mounting seat end face is fixedly connected with a mounting disc, and the clamping piece comprises a tip arranged in the mounting seat and acted by the linkage assembly and a stabilizing clamping piece connected to the end face of one side, away from the mounting seat, of the mounting disc.

Through adopting above-mentioned technical scheme, rely on top can make the axial of work piece keep and the mount pad is coaxial, promote the precision of follow-up processing, simultaneously, utilize steady clamping piece can play stable clamping stable effect to the work piece.

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

1. the spindle box can rotate on the fixed base, so that the relative angle relation between a workpiece and a grinding tool in the spindle box can be adjusted, and the workpiece can be ground in a conical surface manner;

2. the installation seat and the clamping piece which can synchronously rotate are utilized, so that the workpiece can stably rotate in the machining process, and the machining precision is improved.

Drawings

Fig. 1 is a side view of a spindle mechanism of a grinding machine according to an embodiment of the present application.

Fig. 2 is a view from direction a in fig. 1.

Fig. 3 is a partial sectional view of the horizontal section of fig. 2.

Fig. 4 is an enlarged view of a portion I of fig. 3.

Description of reference numerals: 1. a main spindle box; 11. a clamping assembly; 111. a mounting seat; 5. an outer casing; 6. a drive body; 7. an inner sleeve body; 113. a linkage assembly; 14. a linkage seat; 15. a linkage member; 12. a drive assembly; 121. a drive motor; 122. a synchronous drive assembly; 1221. a driving pulley; 1222. a passive pulley; 17. a synchronous belt; 13. a rotating base; 2. a rotating assembly; 21. a fixed base; 22. a locking assembly; 221. locking the bolt; 222. locking the nut; 3. a central shaft; 31. a central rotating hole; 4. a limiting groove; 8. a first rotating bearing; 9. a second rotary bearing; 10. mounting a disc; 16. a tip; 161. a tip mounting section; 162. a tip support section; 18. a seal ring; 19. an arc degree meter; 20. an indicator line; 23. abutting against the groove; 24. a first seal ring; 25. a second seal ring; 26. and (7) a cover plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a spindle mechanism of a grinding machine. Referring to fig. 1, the spindle box 1 for clamping a workpiece is included, a rotating assembly 2 for adjusting a relative angle between the workpiece and a blade is arranged at the bottom of the spindle box 1, and the spindle box 1 can be rotated by the rotating assembly 2, so that the blade can machine the workpiece into a conical surface.

Referring to fig. 2, the rotating assembly 2 includes a fixed base 21 fixedly connected to the upper surface of the machine tool body, the fixed base 21 can be driven by a screw nut on the machine tool body to move along one of the axial directions of the machine tool, the spindle box 1 can rotate around one of the vertical axial directions on the fixed base 21, the spindle box 1 includes a rotating base 13 rotatably connected to the upper surface of the fixed base 21, a clamping assembly 11 for clamping a workpiece and a driving assembly 12 for driving the clamping assembly 11 and the workpiece to rotate synchronously are disposed on the rotating base 13, in order to rotate the rotating base 13 at a specified angle, a vertical central shaft 3 is embedded in the center of the upper end surface of the fixed base 21, the central shaft 3 is divided into two parts with different vertical diameters, the vertical cross section of the central shaft 3 is T-shaped, a part of the central shaft 3 with a larger diameter is extended out of the upper end surface of the fixed base 21, a central rotating hole 31 for embedding the upper section of the central shaft, rely on the normal running fit of center pin 3 and central commentaries on classics hole 31 to make the rotation of certain angle around the vertical axial of center pin 3 through roating seat 13 drive whole centre gripping subassembly 11 and drive assembly 12, in order to confirm the angle of adjustment, combine shown in figure 1, be provided with the radian meter 19 along its circumference at the lateral wall of roating seat 13, synchronous, be provided with the instruction line 20 of instructing in radian meter 19 on unable adjustment base 21.

After the rotating base 13 rotates a certain angle, in order to determine the position of the rotating base 13, a locking assembly 22 for fixing or loosening the rotating base 13 is arranged between the rotating base 13 and the fixed base 21, the locking assembly 22 comprises two vertical locking bolts 221 embedded in the fixed base 21, the locking bolts 221 are inversely embedded in the upper end surface of the fixed base 21, the two locking bolts 221 are centrosymmetric with the central shaft 3, the two locking bolts 221 are all arranged in the rotating base 13 in a penetrating manner, the rotating base 13 is provided with limiting grooves 4 which are in one-to-one correspondence with the locking bolts 221, the limiting grooves 4 are arc-shaped with the center of the central shaft 3 as the center of circle, a locking nut 222 is screwed to a portion of the locking bolt 221 extending out of the rotary base 13, an end surface of the locking nut 222 abuts against an upper end surface of the rotary base 13, after the position of the rotary base 13 is adjusted, the locking nut 222 is tightened to press the rotary base 13 against the upper end surface of the fixed base 21.

Referring to fig. 2 and 3, the clamping assembly 11 includes a mounting base 111 rotatably connected to the rotary base 13 and driven by the driving assembly 12 to rotate, a rotation axial direction of the mounting base 111 is parallel to a moving direction of the spindle box 1 on the machine tool body, the mounting base 111 includes an outer sleeve 5 rotatably connected to the rotary base 13 and having a horizontal center axial direction, an inner sleeve 7 is coaxially disposed in the outer sleeve 5, a driving body 6 driven by the driving assembly 12 is disposed between the inner sleeve 7 and the outer sleeve 5, the driving body 6 is fixedly connected to the outer sleeve 5 and the inner sleeve 7 by bolts, so that the outer sleeve 5, the inner sleeve 7 and the driving body 6 can rotate synchronously, and also in order to allow the driving body 6 and the inner sleeve 7 to rotate relatively, two first rotation bearings 8 are embedded in the driving body 6, and inner rings of the first rotation bearings 8 abut against outer walls of the inner sleeve 7. A workpiece clamping piece for clamping a workpiece is arranged in the inner sleeve body 7.

The workpiece clamping part comprises a tip 16 coaxially penetrating through the inner sleeve body 7, the center axis of the tip 16 is horizontal, two second rotating bearings 9 are embedded and installed at the positions, close to the front end and the rear end, of the inner wall of the inner sleeve body 7, the second rotating bearings 9 can enable the tip 16 to rotate in the inner sleeve body 7, meanwhile, the end portion of the tip 16 extends out of the front end face of the outer sleeve body 5, the tip 16 comprises a tip installation section 161 arranged in the inner sleeve body 7 and a tip supporting section 162 detachably connected to the end portion of the tip installation section 161, the tip installation section 161 and the tip supporting section 162 are coaxial, the tip installation section 161 and the tip supporting section 162 can be in threaded connection in a detachable mode, and the tip supporting section 162 extending out of the end face of the outer sleeve body 5 is matched with an auxiliary shaft to support the end portion of a workpiece to be machined.

In order to enable the clamping piece to keep synchronous rotation with the inner sleeve 7 in the machining process, a linkage assembly 113 capable of keeping the installation section of the tip 16 and the inner sleeve 7 circumferentially fixed is arranged on the outer sleeve 5 and the inner sleeve 7, the linkage assembly 113 comprises a linkage seat 14 which is arranged on the outer walls of the outer sleeve 5 and the inner sleeve 7 in a penetrating mode and is arranged along the radial direction of the outer sleeve 5, the linkage seat 14 is fixedly connected to the outer sleeve 5 through bolts, a linkage piece 15 is arranged in the center of the linkage seat 14 in a penetrating mode and is in threaded connection with the center of the linkage seat 14, the upper end of the linkage piece 15 extends out of the outer wall of the outer sleeve 5, a part of the linkage piece 15 close to the upper section is in threaded connection with the inner wall of the linkage seat 14, a part of the linkage piece 15 close to the lower end rotates and is in sliding connection with the inner wall of the linkage seat 14. The outer wall of the tip mounting section 161 is provided with a curved abutting groove 23, and the lowest point of the abutting groove 23 is provided with an embedding groove for embedding the bottom end of the linkage member 15, so that the tip 16, the outer sleeve 5 and the inner sleeve 7 can be circumferentially fixed by rotating the linkage member 15, and the outer sleeve 5 and the inner sleeve 7 can drive the tip 16 to synchronously rotate when rotating.

Referring to fig. 3 and 4, in order to improve the clamping stability of the workpiece, a mounting disc 10 is fixedly mounted on the front end surface of the driving body 6 through bolts, a through hole for penetrating the center 16 is formed in the center of the mounting disc 10, a first sealing ring 24 is embedded between the outer wall of the mounting disc 10 and the driving body 6, a second sealing ring 25 is embedded in the inner ring of the mounting disc 10, an annular cover plate 26 which covers and tightly abuts against the second sealing ring 25 is embedded in the end surface of the mounting disc 10, and the cover plate 26 is connected with the end surface of the inner sleeve 7 through bolts. The end face of the mounting disc 10 can be provided with a stable clamping piece, the stable clamping piece can be a three-jaw chuck or a quick chuck, when the stable clamping piece is mounted, the three-jaw chuck and the quick chuck are used for clamping a workpiece through bolts, and the clamping stability is improved.

Referring to fig. 3, the driving assembly 12 includes a driving motor 121 fixedly connected to the rotary base 13, a synchronous transmission assembly 122 is disposed between an output shaft of the driving motor 121 and the driving body 6, and the synchronous transmission assembly 122 includes a driving pulley 1221 coaxially and fixedly connected to the output shaft of the driving motor 121, a driven pulley 1222 coaxially connected to an outer wall of the driving body 6, and a synchronous belt 17 engaged with the driving pulley 1221 and the driven pulley 1222, so that the driving body 6 can be driven to rotate axially around itself by the driving of the driving motor 121 through the transmission of the synchronous belt 17.

The working principle of the embodiment is as follows: the end parts of the workpiece are supported in an abutting mode through the tip supporting section 162, the two ends of the workpiece can be supported by matching with the auxiliary shaft, a three-jaw chuck or a quick chuck can be mounted on the mounting disc 10 to clamp the middle section of the workpiece, the linkage piece 15 is rotated, the bottom of the linkage piece 15 is abutted against the outer wall of the tip mounting section 161, the outer sleeve 5 and the tip 16 are circumferentially fixed, the rotary base 13 is rotated or not rotated according to the actual grinding requirement, the locking nut 222 is screwed, the rotary base 13 is fixed on the upper end face of the fixed base 21, the driving motor 121 is started, the driving body 6 is driven to rotate through the synchronous belt 17, the outer sleeve 5, the inner sleeve 7 and the tip 16 can synchronously rotate, and therefore the workpiece is driven to rotate in the machining process.

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 (8)

1. The utility model provides a main shaft mechanism of grinding machine, includes headstock (1), its characterized in that: the novel lathe spindle box is characterized in that a rotating assembly (2) is arranged at the bottom of the spindle box (1), and the rotating assembly (2) comprises a fixed base (21) which is fixedly connected to a machine body and is connected with the spindle box (1) in a rotating mode around the vertical axial direction and a locking assembly (22) which is connected between the spindle box (1) and the fixed base (21) and used for fixing or loosening the spindle box (1).

2. A spindle mechanism for a grinding machine as claimed in claim 1, wherein: the fixed base (21) is provided with a vertical central shaft (3), and the bottom of the spindle box (1) is provided with a central rotating hole (31) for embedding the rotating central shaft (3).

3. A spindle mechanism for a grinding machine as claimed in claim 2, wherein: locking Assembly (22) including inlay locate in unable adjustment base (21) and wear to locate locking bolt (221), threaded connection of headstock (1) in locking bolt (221) and support headstock (1) tightly in lock nut (222) of unable adjustment base (21) up end, headstock (1) is seted up and is used center pin (3) to be curved spacing groove (4) as the center, lock bolt (221) wear to locate spacing groove (4) and with lock nut (222) threaded connection.

4. A spindle mechanism for a grinding machine as claimed in claim 1, wherein: headstock (1) including be used for centre gripping work piece centre gripping subassembly (11), drive centre gripping subassembly (11) pivoted drive assembly (12), be used for bearing rotary seat (13) of centre gripping subassembly (11) and drive assembly (12), centre gripping subassembly (11) including rotate connect in rotary seat (13) and by drive assembly (12) drive pivoted mount pad (111), arrange the work piece holder in mount pad (111), connect and be used for being circumferential direction fixed linkage subassembly (113) with mount pad (111) and work piece holder in mount pad (111).

5. A spindle mechanism for a grinding machine as claimed in claim 4, in which: the linkage assembly (113) comprises a linkage seat (14) connected to the mounting seat (111) and a linkage piece (15) which is in threaded connection with the linkage seat (14) and can be abutted against the side wall of the clamping piece.

6. A spindle mechanism for a grinding machine as claimed in claim 4, in which: the driving assembly (12) comprises a driving motor (121) connected to the rotating base (13) and a synchronous transmission assembly (122) connected between an output shaft of the driving motor (121) and the mounting base (111), wherein the synchronous transmission assembly (122) comprises a driving pulley (1221) coaxially and fixedly connected to the output shaft of the driving motor (121), a driven pulley (1222) coaxially connected to the outer wall of the mounting base (111), and a synchronous belt (17) meshed with the driving pulley (1221) and the driven pulley (1222).

7. A spindle mechanism for a grinding machine as claimed in claim 4, in which: mount pad (111) are including rotating outer cover (5), the driving body (6), the coaxial coupling in driving body (6) of outer cover (5) of connection in roating seat (13) and be used for installing inner cover body (7) of holder, drive assembly (12) drive driving body (6) and rotate, be provided with first rolling bearing (8) between driving body (6) and the inner cover body (7), be provided with second rolling bearing (9) between the inner cover body (7) and the holder.

8. A spindle mechanism for a grinding machine as claimed in claim 4, in which: the end face of the mounting seat (111) is fixedly connected with a mounting disc (10), and the workpiece clamping piece comprises a tip (16) arranged in the mounting seat (111) and acted by the linkage assembly (113) and a stabilizing clamping piece connected to the end face of one side, away from the mounting seat (111), of the mounting disc (10).

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