CN215356558U

CN215356558U - Numerical control machine tool for machining high-precision inner helical gear

Info

Publication number: CN215356558U
Application number: CN202121842185.2U
Authority: CN
Inventors: 张桑琪
Original assignee: Changzhou Xinyubao Drive Disk Assembly Co ltd
Current assignee: Changzhou Xinyubao Drive Disk Assembly Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2021-12-31
Anticipated expiration: 2031-08-06

Abstract

The utility model relates to a digit control machine tool is used in helical gear processing in high accuracy, relate to the field of gear machining, it includes the casing, two clamping jaws and clamping mechanism of relative setting, the casing rotates to be connected on the workstation and is connected with work piece rotary mechanism, the casing is kept away from the surface of workstation and has been seted up two slot holes that slide, two slot holes that slide are in same straight line, the clamping jaw wears to establish at the slot hole that slides, the clamping jaw slides with the casing and is connected, clamping mechanism sets up in the casing, the clamping jaw penetrates the one end of casing and is connected with clamping mechanism, clamping mechanism is used for driving relative or back of the body removal between two clamping jaws. This application is through the coordinated control between vertical feed mechanism, cutting feed mechanism, work piece rotary mechanism and the cutter rotary mechanism, realizes the internal helical gear cutting process to it is more convenient to make the work piece clamping fixed through clamping device, and the cutter is carrying out internal helical gear to the inner circle of work piece and is adding man-hour, and this clamping device is difficult for causing the interference to the cutter, thereby ensures the processingquality of internal helical gear.

Description

Numerical control machine tool for machining high-precision inner helical gear

Technical Field

The application relates to the field of gear machining, in particular to a numerical control machine tool for machining a high-precision inner helical gear.

Background

The gear transmission is the most widely applied transmission mode in mechanical transmission, the helical gear is an important class of gears, the internal helical gear is one of the helical gears, namely the helical gear of the internal helical gear is processed and formed in the inner ring of the gear, although the helical gear has axial force during transmission, the helical gear has low noise, stable operation and long service life, and is widely applied to the transmission of a speed changer and a speed reducer.

The related Chinese utility model with publication number CN207952825U discloses a special machine tool for inserting an internal helical gear, wherein a longitudinal guide rail and a transverse guide rail are fixed on a machine tool body, a support upright post is arranged at the top of the longitudinal guide rail in a sliding fit manner, and an upright post is arranged at the top of the transverse guide rail in a sliding fit manner; a workbench for installing workpieces is fixed on the supporting upright; the supporting upright posts are matched with the longitudinal feeding mechanism and drive the supporting upright posts to feed longitudinally along the longitudinal guide rail; the upright post is provided with a tool rest, the front end of the tool rest is provided with a tool, and the upright post is connected and matched with the cutting feed mechanism and drives the upright post to transversely feed along the transverse guide rail to realize cutting action; the workbench is connected with the workpiece rotating mechanism and drives the workpiece to rotate; the tool rest is connected with the tool rotating mechanism and drives the tool to rotate. The gear shaper can machine internal helical teeth, and the helical angle of the helical gear can be accurately controlled and cut through the linkage of the rotating motion angle of a workpiece and the cutting motion position of a cutter.

In view of the above-mentioned related technologies, the inventor believes that when the related machine tool performs machining of the inner helical gear, clamping and fixing of the inner helical gear is inconvenient, and interference with machining of the cutter is likely to occur.

SUMMERY OF THE UTILITY MODEL

In order to improve the fixed inconvenient of clamping of interior helical gear, clamping device causes the problem of interference easily to the processing of cutter, this application provides a digit control machine tool is used in helical gear processing in high accuracy.

The application provides a digit control machine tool is used in helical gear processing in high accuracy adopts following technical scheme:

the utility model provides a helical gear is digit control machine tool for processing in high accuracy, includes the workstation and sets up the clamping device who is used for carrying out the centre gripping to the work piece on the workstation, clamping device includes casing, two clamping jaws and the clamping mechanism of relative setting, the casing rotates to be connected on the workstation and is connected with the work piece rotary mechanism of lathe, the casing is kept away from the surface of workstation and has been seted up two slot holes of sliding, two the slot hole of sliding is in same straight line, the clamping jaw wears to establish the slot hole of sliding, the clamping jaw slides with the casing and is connected, clamping mechanism sets up in the casing, the clamping jaw penetrates the one end of casing and is connected with clamping mechanism, clamping mechanism is used for driving relative or back-on-the-back removal between two clamping jaws.

Through adopting above-mentioned technical scheme, when carrying out the gear shaping processing of interior helical gear, according to the work piece size of treating processing, adjust to suitable distance between two clamping jaws through clamping mechanism to make the work piece can put into between two clamping jaws. After a workpiece is placed between the two clamping jaws, the clamping mechanism drives the two clamping jaws to move relatively, so that the workpiece is clamped and fixed between the two clamping jaws, the workpiece is clamped and fixed more conveniently, and the clamping device is not easy to interfere with a cutter when the cutter carries out internal helical tooth machining on the inner ring of the workpiece.

Preferably, clamping mechanism includes driving motor, drive gear, two-way screw rod and drive gear, the middle part at two-way screw rod is established to drive gear fixed cover, is located the screw thread of the two-way screw rod of drive gear both sides is turned to the opposite direction, two-way screw rod rotates and is connected in the casing, the axial of two-way screw rod parallels with the length direction of the slot hole that slides, the clamping jaw penetrates the one end of casing and is fixed with the connecting block, the connecting block is located drive gear's both sides, the connecting block cover establish on two-way screw rod and with two-way screw rod threaded connection, drive gear rotates to be connected in the casing, just drive gear and drive gear meshing, driving motor fixes on the casing, driving motor is used for driving drive gear to rotate.

Through adopting above-mentioned technical scheme, driving motor drives drive gear and rotates, and drive gear drives two-way screw rod then and rotates, and the screw thread of two-way screw rod axial both sides is to opposite soon, and two-way screw rod then drives two connecting blocks and moves opposite or back on the back to the connecting block drives the clamping jaw and moves opposite or back on the back, realizes pressing from both sides tightly fixedly to the work piece, simple structure, and the operation is reliable.

Preferably, a guide rod is fixedly arranged in the shell and is parallel to the two-way screw rod, the guide rod is sleeved with the connecting block, and the connecting block is connected with the guide rod in a sliding manner.

Through adopting above-mentioned technical scheme, the guide arm plays good guide effect to the removal of connecting block, makes the removal of clamping jaw more steady then, improves the tight fixed effect of clamp to the work piece then.

Preferably, the clamping jaw includes connecting rod and grip slipper, the connecting rod is worn to establish in the slot that slides, the connecting rod penetrates the one end and the connecting block fixed connection of casing, the other end and the grip slipper fixed connection of connecting rod, two the arc wall has been seted up to the terminal surface that the grip slipper is close to each other.

Through adopting above-mentioned technical scheme, the clamping jaw passes through the grip slipper and presss from both sides tight fixedly to the work piece, and the one side that the grip slipper is close to the work piece sets up the arc wall for the clamping jaw is applicable to gear machining's clamp more and presss from both sides tightly fixed, makes the clamping jaw better to the tight centering effect of clamp of work piece, thereby improves processingquality.

Preferably, the middle part of the end face of the shell, which is far away from the workbench, is provided with a circular feed groove.

Through adopting above-mentioned technical scheme, the feed circular slot set up to provide good process space for the feed processing of cutter, the guarantee is to the processingquality of work piece.

Preferably, install the axial on the grip slipper and compress tightly the subassembly, the axial compresses tightly the subassembly and includes installation pole, mounting panel and clamp bolt, the one end and the grip slipper of installation pole are connected, the other end and the mounting panel of installation pole are connected, clamp bolt wears to establish on the mounting panel, clamp bolt and mounting panel threaded connection.

By adopting the technical scheme, when the workpiece is clamped and fixed between the two clamping seats, the pressing bolt is tightly abutted to the workpiece by screwing the pressing bolt, so that the workpiece is clamped between the shell and the pressing bolt, the workpiece is clamped and fixed in the axial direction, and the stability of clamping and fixing the workpiece is further improved.

Preferably, the mounting rod is rotatably connected with the clamping seat, and one end of the mounting rod, which is far away from the clamping seat, is fixedly connected with the mounting plate.

Through adopting above-mentioned technical scheme, the installation pole rotates with the grip slipper to be connected, and then the axial compresses tightly the subassembly and rotates with the grip slipper to be connected, when pressing from both sides tightly the work piece through the clamping jaw, can compress tightly the subassembly with the axial and rotate one side for the axial compresses tightly the subassembly and is difficult for causing the interference to the clamping of work piece, and the practicality is better.

Preferably, one end of the compression bolt, which is close to the shell, is rotatably connected with a pressing block, and an elastic pad is fixed on one surface of the pressing block, which is close to the shell.

By adopting the technical scheme, the contact area of the compression bolt and the workpiece is increased, the clamping and fixing effects of the compression bolt on the workpiece are improved, the elastic pad has a protection effect on the workpiece, and the possibility that the compression bolt compresses the workpiece to be abraded is reduced.

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

1. the clamping jaw and the clamping mechanism are arranged, so that the workpiece is more convenient to clamp and fix, and the clamping device is not easy to interfere with the tool when the tool is used for processing inner helical teeth of the inner ring of the workpiece, so that the processing quality of the inner helical gear is guaranteed;

2. by arranging the axial pressing assembly, the workpiece is clamped between the shell and the pressing bolt, and the workpiece is clamped and fixed in the axial direction, so that the stability of clamping and fixing the workpiece is further improved;

3. the internal helical gear is cut and machined through linkage control among the longitudinal feeding mechanism, the cutting feeding mechanism, the workpiece rotating mechanism and the cutter rotating mechanism, and machining quality is guaranteed.

Drawings

Fig. 1 is a schematic view of the overall structure of a numerically-controlled machine tool for machining a high-precision internal helical gear according to an embodiment of the present invention when the numerically-controlled machine tool is mounted on a machine tool.

Fig. 2 is a schematic view of the overall structure of a numerical control machine tool for machining a high-precision internal helical gear according to an embodiment of the present application.

Fig. 3 is a partial structural schematic diagram for embodying a clamping mechanism according to an embodiment of the present application.

Description of reference numerals: 1. a housing; 11. a sliding long hole; 12. feeding a circular groove; 2. a clamping jaw; 21. a clamping seat; 211. an arc-shaped slot; 22. a connecting rod; 23. connecting blocks; 3. a clamping mechanism; 31. a drive motor; 32. a drive gear; 33. a transmission gear; 34. a bidirectional screw; 35. a guide bar; 4. an axial compression assembly; 41. mounting a rod; 42. mounting a plate; 43. a hold-down bolt; 44. briquetting; 45. an elastic pad; 5. a work table; 6. a lathe bed.

Detailed Description

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

The embodiment of the application discloses digit control machine tool is used in processing of helical gear in high accuracy. Referring to fig. 1 and 2, the numerical control machine tool for machining the high-precision inner helical gear comprises a machine body 6 and a workbench 5 arranged on the machine body 6, wherein a clamping device for clamping and fixing a workpiece is arranged on the workbench 5. The clamping device comprises a housing 1, a clamping mechanism 3 and two clamping jaws 2. Clamping mechanism 3 installs in casing 1, sets up relatively between two clamping jaws 2, and clamping jaw 2 slides with casing 1 and is connected, and each clamping jaw 2 all is connected with clamping mechanism 3, and clamping mechanism 3 is used for driving and moves relatively or back on the back between two clamping jaws 2. When the clamping device is installed on a machine tool for use, the shell 1 is rotationally connected to the workbench 5 of the machine tool, the shell 1 is connected with a workpiece rotating mechanism of the machine tool, the workpiece rotating mechanism is used for driving the shell 1 to rotate, the workpiece rotating mechanism is related technology, and details are not repeated in the embodiment. When clamping a workpiece, the workpiece is placed between the two jaws 2, and the clamping mechanism 3 clamps the workpiece between the two jaws 2 by driving the two jaws 2 to move relatively.

Referring to fig. 2 and 3, the end surface of the housing 1 is provided with two sliding long holes 11, the two sliding long holes 11 are collinear, the sliding long holes 11 correspond to the clamping jaws 2 one to one, and the middle part of the end surface of the housing 1 is provided with a feed groove 12, so that a good processing space is provided for a cutter during the processing of the inner helical gear. The clamping jaw 2 comprises a connecting rod 22 and a clamping seat 21, the connecting rod 22 penetrates through the corresponding sliding long hole 11, and the connecting rod 22 is connected with the shell 1 in a sliding mode through the sliding long hole 11. One end of the connecting rod 22 penetrating into the shell 1 is connected with the clamping mechanism 3, and the other end of the connecting rod 22 is welded and fixed with the clamping seat 21. The clamping holder 21 is formed with arc groove 211 near the one side at casing 1 center, and clamping holder 21 is the arc on the length direction of self to clamping holder 21 is applicable to the clamp of gear more and fixes, ensures the processingquality of interior helical gear.

Referring to fig. 2 and 3, the clamping mechanism 3 includes a driving motor 31, a driving gear 32, a bidirectional screw 34 and a transmission gear 33, the driving motor 31 is fixed on the outer wall of the housing 1 by bolts, an output shaft of the driving motor 31 penetrates into the housing 1 and is fixed coaxially with the driving gear 32, and the driving motor 31 is used for driving the driving gear 32 to rotate. The bidirectional screw 34 is rotatably connected in the shell 1, the axial direction of the bidirectional screw 34 is parallel to the length direction of the sliding long hole 11, the transmission gear 33 is fixedly sleeved in the middle of the bidirectional screw 34, and the transmission gear 33 is meshed with the driving gear 32. One end of the clamping jaw 2 penetrating into the shell 1 is fixed with a connecting block 23, the connecting block 23 is positioned on two sides of the transmission gear 33, the connecting block 23 is sleeved on the upper bidirectional screw 34, the connecting block 23 is in threaded connection with the bidirectional screw 34, and the thread turning directions of the bidirectional screws 34 positioned on two sides of the transmission gear 33 are opposite. The driving motor 31 rotates through driving the driving gear 32, the driving gear 32 drives the bidirectional screw 34 to rotate through the transmission gear 33, the bidirectional screw 34 drives the two connecting blocks 23 to move oppositely or back to back, then the two clamping jaws 2 are driven to move oppositely or back to back, and clamping and fixing of the workpiece are achieved.

Referring to fig. 2 and 3, in order to make the movement of the clamping jaw 2 more stable, a guide rod 35 is arranged on one side of the bidirectional screw 34 away from the driving gear 32, the guide rod 35 is parallel to the bidirectional screw 34, two ends of the guide rod 35 are fixedly connected with the inner wall of the housing 1, one side of the connecting block 23 away from the bidirectional screw 34 is sleeved on the guide rod 35, and the connecting block 23 is connected with the guide rod 35 in a sliding manner, so that the clamping jaw 2 is guided to move well.

Referring to fig. 2 and 3, in order to further improve the clamping and fixing effect on the workpiece, the axial pressing assemblies 4 are arranged on the clamping bases 21, in this embodiment, two sets of axial pressing assemblies 4 are arranged on each clamping base 21, and the two sets of axial pressing assemblies 4 are connected to the side walls at the two ends of the clamping base 21 in the length direction. Each axial compression assembly 4 includes a mounting rod 41, a mounting plate 42, a compression bolt 43, and a compression block 44. The mounting rod 41 is perpendicular to the end surface of the housing 1, one end of the mounting rod 41 is rotatably connected with the clamping seat 21, and the other end of the mounting rod 41 is welded and fixed with the mounting plate 42. The hold-down bolt 43 is arranged in the mounting plate 42 in a penetrating way, the hold-down bolt 43 is parallel to the mounting rod 41, and the hold-down bolt 43 is in threaded connection with the mounting plate 42. One end of the hold-down bolt 43 facing the housing 1 is rotatably connected with a press block 44, and one surface of the press block 44 close to the housing 1 is fixedly bonded with an elastic pad 45 made of rubber material, so as to improve the clamping and fixing effect on the workpiece.

Referring to fig. 2 and 3, when the workpiece is clamped and fixed between the two clamping seats 21, the axial pressing component 4 is rotated to a proper position, and then the pressing bolt 43 is screwed to enable the pressing bolt 43 to be abutted against the workpiece, so that the workpiece is clamped between the shell 1 and the pressing bolt 43, the workpiece is not easy to fall off from between the two clamping seats 21 during processing, and the stability of clamping and fixing the workpiece is further improved.

The implementation principle of the numerical control machine tool for machining the high-precision inner helical gear in the embodiment of the application is as follows: during gear shaping processing of the internal helical gear, the two clamping jaws 2 are adjusted to a proper distance through the clamping mechanism 3 according to the size of a workpiece to be processed, then the workpiece is placed between the two clamping jaws 2, and the clamping mechanism 3 drives the two clamping jaws 2 to move relatively, so that the workpiece is clamped and fixed between the two clamping jaws 2. Then, the axial pressing component 4 is rotated to a proper position, the pressing bolt 43 is screwed, the workpiece is clamped between the shell 1 and the pressing bolt 43, and the axial movement of the workpiece is clamped and fixed, so that the convenience and firmness of clamping and fixing the workpiece are improved, when the cutter carries out inner helical tooth machining on the inner ring of the workpiece, the clamping device is not easy to interfere with the cutter, the machining quality of the inner helical gear is improved, and finally, the inner helical gear is machined by utilizing the linkage among the longitudinal feeding mechanism, the cutting feeding mechanism, the workpiece rotating mechanism and the cutter rotating mechanism of the machine tool, and the machining quality is guaranteed.

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 helical gear processing is with digit control machine tool in high accuracy, includes workstation (5) and sets up the clamping device who is used for carrying out the centre gripping to the work piece on the workstation, its characterized in that: clamping device includes casing (1), two clamping jaws (2) and clamping mechanism (3) that set up relatively, casing (1) rotates to be connected on workstation (5) and is connected with the work piece rotary mechanism of lathe, casing (1) is kept away from the surface of workstation (5) and has been seted up two slot hole (11) that slide, two slot hole (11) that slide are in same straight line, clamping jaw (2) are worn to establish slot hole (11) that slide, clamping jaw (2) slide with casing (1) and are connected, clamping mechanism (3) set up in casing (1), clamping jaw (2) penetrate the one end and the clamping mechanism (3) of casing (1) and are connected, clamping mechanism (3) are used for driving relative or back-on-the-back removal between two clamping jaws (2).

2. The numerical control machine tool for machining the high-precision inner helical gear according to claim 1, wherein: clamping mechanism (3) includes driving motor (31), drive gear (32), two-way screw rod (34) and drive gear (33), drive gear (33) fixed cover is established at the middle part of two-way screw rod (34), is located the screw thread of two-way screw rod (34) of drive gear (33) both sides is revolved to opposite, two-way screw rod (34) are rotated and are connected in casing (1), the axial of two-way screw rod (34) is parallel with the length direction of slot hole (11) that slides, clamping jaw (2) penetrate the one end of casing (1) and are fixed with connecting block (23), connecting block (23) are located the both sides of drive gear (33), connecting block (23) cover establish on two-way screw rod (34) and with two-way screw rod (34) threaded connection, drive gear (32) rotate and connect in casing (1), just drive gear (32) and drive gear (33) meshing, the driving motor (31) is fixed on the shell (1), and the driving motor (31) is used for driving the driving gear (32) to rotate.

3. The numerical control machine tool for machining the high-precision inner helical gear according to claim 2, characterized in that: the guide rod (35) is fixedly arranged in the shell (1), the guide rod (35) is parallel to the two-way screw rod (34), the guide rod (35) is sleeved with the connecting block (23), and the connecting block (23) is connected with the guide rod (35) in a sliding mode.

4. The numerical control machine tool for machining the high-precision inner helical gear according to claim 3, characterized in that: clamping jaw (2) are including connecting rod (22) and grip slipper (21), connecting rod (22) are worn to establish in slot hole (11) that slides, connecting rod (22) penetrate one end and connecting block (23) fixed connection of casing (1), the other end and grip slipper (21) fixed connection of connecting rod (22), two arc wall (211) have been seted up to the terminal surface that grip slipper (21) are close to each other.

5. The numerical control machine tool for machining the high-precision inner helical gear according to claim 1, wherein: the middle part of the end face of the shell (1) far away from the workbench (5) is provided with a feed circular groove (12).

6. The numerical control machine tool for machining the high-precision inner helical gear according to claim 4, wherein: install axial on grip slipper (21) and compress tightly subassembly (4), axial compresses tightly subassembly (4) including installation pole (41), mounting panel (42) and clamp bolt (43), the one end and the grip slipper (21) of installation pole (41) are connected, the other end and the mounting panel (42) of installation pole (41) are connected, clamp bolt (43) are worn to establish on mounting panel (42), clamp bolt (43) and mounting panel (42) threaded connection.

7. The numerical control machine tool for machining the high-precision inner helical gear according to claim 6, wherein: the mounting rod (41) is rotatably connected with the clamping seat (21), and one end, far away from the clamping seat (21), of the mounting rod (41) is fixedly connected with the mounting plate (42).

8. The numerical control machine tool for machining the high-precision inner helical gear according to claim 7, wherein: one end of the pressing bolt (43) close to the shell (1) is rotatably connected with a pressing block (44), and an elastic pad (45) is fixed on one surface of the pressing block (44) close to the shell (1).