CN220739351U - Thread rolling machine spindle with tooth position compensation and damping functions - Google Patents
Thread rolling machine spindle with tooth position compensation and damping functions Download PDFInfo
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- CN220739351U CN220739351U CN202320939131.0U CN202320939131U CN220739351U CN 220739351 U CN220739351 U CN 220739351U CN 202320939131 U CN202320939131 U CN 202320939131U CN 220739351 U CN220739351 U CN 220739351U
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- bearing
- tooth position
- position compensation
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Abstract
The utility model discloses a thread rolling machine spindle with tooth position compensation and damping functions, which belongs to the technical field of thread rolling machines and comprises a spindle, a speed reducer seat, a thrust ball bearing, a thread rolling wheel, a rear support, a front support, a roller bearing, a needle bearing and a tooth position compensation and damping device. The beneficial effects are as follows: the precision and stability of thread and spline machining of the thread rolling machine are improved, and the manufacturability of spindle machining and assembling is optimized.
Description
Technical Field
The utility model belongs to the technical field of thread rolling machines, and particularly relates to a thread rolling machine spindle with tooth position compensation and damping functions.
Background
The thread rolling machine is a multifunctional cold extrusion forming machine tool, and can carry out thread, straight line, twill rolling and other treatments on a workpiece in a cold state within the rolling force range; rolling of straight teeth, helical teeth and helical spline gears; straightening, reducing, rolling and various forming and rolling. The machine has a safe and reliable electro-hydraulic execution and control system, and each working cycle can be selected in three modes of manual mode, semi-automatic mode and automatic mode.
The utility model discloses an outer cantilever roll supporting seat and a main shaft assembly structure of a thread rolling machine, which comprises two groups of thread hob modules which are mutually corresponding and can work simultaneously, wherein the two groups of thread hob modules are respectively a left thread hob module and a right thread hob module, and the left thread hob module and the right thread hob module are respectively provided with a main shaft and a main shaft thin supporting seat. According to the utility model, the clearance range of the outer sides of the two roller cutters is increased by changing the diameter of the front section of the main shaft, so that the range of the processable product is enlarged; the screw thread processing device solves the difficult problems that fixed flying ring screws and other workpieces with small screw threads and large screw thread rear structures cannot be processed or are difficult to process on a thread rolling machine, and improves the thread processing efficiency and screw thread quality. By adding the thin supporting seat of the main shaft, the defect that the main shaft is deformed or broken during cantilever rolling processing in the prior design is overcome, the processing precision of screw teeth is improved, and the service life of the main shaft is prolonged.
The thread rolling machine comprises a fixed main shaft and a movable main shaft, the main shaft of the existing thread rolling machine has a simple structure, only part of machine types have a tooth position compensation function, but the thread rolling machine has no damping function, and has the following defects: 1. the transmission chain gap cannot be eliminated, and the machining precision of a workpiece is affected; 2. when the thread rolling machine is used for machining the spline, the transmission chain vibrates greatly; 3. the tooth position compensation usually adopts a built-in spring sleeve structure, and is inconvenient to install and detach.
Disclosure of Invention
In order to solve the problems, the utility model decides to develop a thread rolling machine spindle with tooth position compensation and damping functions.
The utility model provides a have thread rolling machine main shaft of tooth position compensation and damping function concurrently, includes main shaft, speed reducer seat, thrust ball bearing, thread rolling wheel, back support, preceding support, roller bearing, still includes tooth position compensation and damping device, install thrust ball bearing between main shaft and the speed reducer seat, install the thread rolling wheel on the main shaft, install in back support through roller bearing on the main shaft of thread rolling wheel left end, install in front support through roller bearing on the main shaft of thread rolling wheel right-hand member, tooth position compensation and damping device are installed to the one end of back support, the main shaft runs through thrust ball bearing, roller bearing, tooth position compensation and damping device, thread rolling wheel, bearing respectively and installs in back support, preceding support.
Further, the tooth position compensation and damping device comprises a bearing gland, a main shaft sleeve, a friction ring, a cover, a spring, a pressing plate, a limit guide post and a locking screw, wherein one end of the bearing gland is arranged on a rear support, a stud is arranged at the other end of the bearing gland, the main shaft sleeve and the friction ring are sequentially arranged in a space surrounded by the stud, a mounting hole is formed in the friction ring, the limit guide post is arranged in the mounting hole, a cover through hole and a cover mounting hole are formed in the cover, the stud sequentially penetrates through the cover through hole on the cover and the pressing plate through hole on the pressing plate and is fixed through the locking screw, and the spring is arranged in the cover mounting hole.
Further, the rolling needle bearing further comprises a front bearing gland and a rear bearing gland, wherein the front bearing gland and the rear bearing gland are respectively arranged in front of and behind the needle bearing.
Further, a spindle gland is mounted at the end of the spindle.
Further, the needle bearing comprises a needle bearing inner ring and a needle bearing outer ring, the needle bearing inner ring is fixedly arranged on the main shaft, and the needle bearing outer ring is arranged on the front support.
Further, the roller bearing comprises a roller bearing inner ring and a roller bearing outer ring, wherein the roller bearing inner ring is installed on the main shaft, and the roller bearing outer ring is installed on the rear support.
Further, the number of the springs is 4-16, and the number of the studs is 4.
Further, the number of the springs is 12.
Further, a main shaft key is further arranged on the main shaft, and the main shaft sleeve is mounted on the main shaft through the main shaft key.
Further, the main shaft sleeve comprises an annular body, a cylinder and a key groove, wherein the bottom end of the cylinder is connected with the top end of the annular body, the key groove is arranged on the inner walls of the annular body and the cylinder, and the key groove is matched with the main shaft key to enable the main shaft sleeve and the main shaft to rotate together; the friction surface of the annular body is attached to the friction ring, and friction force is formed under the pressure of the spring to prevent the spindle sleeve from rotating along with the spindle; the main shaft sleeve adopts a heat treatment process, has the hardness of 42-47HRC, and has high strength and high wear resistance.
The utility model provides a thread rolling machine spindle with tooth position compensation and damping functions, which mainly has the following functions and principles:
1. tooth position compensation function: the device is used for protecting the thread rolling wheel under the condition of the misalignment of the thread rolling wheel, the thread rolling wheel is misaligned, the thread rolling wheel is pushed by the axial thrust of a workpiece to move in the direction of a main shaft as shown in the figure, the main shaft pushes a main shaft sleeve, a friction ring and a cover, and finally a spring is compressed, and at the moment, a compensation gap is used for compensating the roller offset caused by the misalignment of the roller;
2. damping function: the device is used for eliminating gaps of a transmission chain, damping and preloading functions;
2.1 anti-backlash function: the main motor drives the main shaft to do rotary motion through the transmission mechanism, the main shaft drives the main shaft sleeve to rotate, and the friction ring generates friction resistance for eliminating fit gaps in the transmission mechanism;
2.2 damping function: different from the continuous and stable stressed processing state of thread rolling, the stressed state is an intermittent state when the spline is rolled, the whole transmission chain vibrates greatly, and at the moment, the damping can limit the rotation of the main shaft and reduce vibration;
2.3 preloading: when the servo motor drives the main shaft to rotate through the transmission mechanism, the friction force generated by the friction ring needs to be overcome, and the maximum load of the main shaft of the structure is 160kN, when the main shaft is in rolling processing, the maximum load of the thread rolling machine is 160kN, the thread rolling wheel is changed from minimum to maximum at the moment of contacting a workpiece, the speed requirement for driving the servo motor to respond to the numerical control system is higher, the load change amplitude of the servo motor can be reduced through damping pre-loading, and the requirement of the equipment on the response speed of the numerical control system is reduced.
The beneficial effects obtained by the utility model are as follows: the thread rolling machine spindle with the tooth position compensation and damping functions improves the precision and stability of thread and spline machining of the thread rolling machine, and optimizes the manufacturability of spindle machining and assembly. Compared with the traditional spindle structure that the thread rolling machine is limited in machining range only for machining low-precision threads and medium-precision threads, the thread rolling machine with the structure can be widely used for machining small-modulus spline parts and is more suitable for machining high-precision threads in the aerospace field.
Drawings
FIG. 1 is a cross-sectional view of a thread rolling machine spindle with both tooth position compensation and damping functions;
FIG. 2 is an exploded view of the dental floss compensating and damping device;
FIG. 3 is an enlarged view of a portion of the spindle cover;
the reference numerals in the drawings are:
1. spindle, 2, spindle sleeve, 3, friction ring, 4, cover, 5, spring, 6, pressure plate, 7, stop guide post, 8, locking screw, 9, stud, 10, spindle key, 11, spindle gland, 12, washer one, 13, front bearing gland, 14, needle bearing inner race, 15, needle bearing, 16, front seat, 17, rear bearing gland, 18, washer two, 19, bearing gland, 20, roller bearing, 21, rear seat, 22, lock nut, 23, speed reducer seat, 24, thrust ball bearing, 25, thread roller, 26 cover through hole, 27 cover mounting, 28 annulus, 29 cylinder, 30 keyway.
Detailed Description
Example 1
Referring to fig. 1-3, a spindle of a thread rolling machine with functions of tooth position compensation and damping comprises a spindle 1, a speed reducer seat 23, a thrust ball bearing 24, a thread rolling wheel 25, a rear support 21, a front support 16, a roller bearing 20 and a needle bearing 15, and further comprises a tooth position compensation and damping device, wherein the thrust ball bearing 24 is arranged between the spindle 1 and the speed reducer seat 23, the thread rolling wheel 25 is arranged on the spindle, the spindle at the left end of the thread rolling wheel 25 is arranged on the rear support 21 through the roller bearing 20, the spindle at the right end of the thread rolling wheel 25 is arranged on the front support 16 through the needle bearing 15, one end of the rear support 21 is provided with the tooth position compensation and damping device, and the spindle 1 respectively penetrates through the thrust ball bearing 24, the roller bearing 20, the tooth position compensation and damping device, the thread rolling wheel 25 and the needle bearing 15 and are arranged on the rear support 21 and the front support 16.
The tooth position compensation and damping device comprises a bearing cover 19, a main shaft sleeve 2, a friction ring 3, a cover 4, a spring 5, a pressing plate 6, a limit guide post 7 and a locking screw 8, wherein one end of the bearing cover 19 is installed on a rear support 21, a stud 9 is arranged at the other end of the bearing cover 19, the main shaft sleeve 2 and the friction ring 3 are sequentially installed in a space surrounded by the stud 9, an installation hole is formed in the friction ring 3, the limit guide post 7 is installed in the installation hole, the other end of the limit guide post 7 is correspondingly installed in a small hole on the cover 4, a cover through hole 26 and a cover installation hole 27 are formed in the cover 4, the stud 9 sequentially penetrates through the cover through hole 26 on the cover 4 and the pressing plate through hole on the pressing plate 6 and is fixed through the locking screw 8, and the spring 5 is installed in the cover installation hole 27.
The rolling needle bearing further comprises a front bearing gland 13 and a rear bearing gland 17, wherein the front bearing gland 13 and the rear bearing gland 17 are respectively arranged in front of and behind the needle bearing 15.
The end of the spindle is provided with a spindle gland 11.
The needle bearing 15 comprises a needle bearing inner ring and a needle bearing outer ring, the needle bearing inner ring 14 is fixedly arranged on the main shaft 1, and the needle bearing outer ring is arranged on the front support 16.
The roller bearing 20 includes a roller bearing inner ring mounted to the main shaft 1, and a roller bearing outer ring mounted to the rear mount 21.
The number of the springs 5 is 12. The number of studs 9 is 4.
The main shaft 1 is also provided with a main shaft key 10, and the main shaft sleeve 2 is arranged on the main shaft 1 through the main shaft key 10.
The main shaft sleeve 2 comprises an annular body 28, a column 29 and a key groove 30, wherein the bottom end of the column 29 is connected with the top end of the annular body 28, the key groove 30 is arranged on the inner walls of the annular body 28 and the column 29, and the key groove 30 is matched with the main shaft key 10 to enable the main shaft sleeve and the main shaft to rotate together; the friction ring 3 penetrates through the column 29 to be attached to the annular body 28, the friction surface of the annular body 28 is attached to the friction ring 3, friction force is formed under the pressure of the spring 5, and the spindle sleeve 2 is prevented from rotating along with the spindle 1; the main shaft sleeve 2 adopts a heat treatment process, has the hardness of 42-47HRC, and has high strength and high wear resistance.
The working process comprises the following steps:
the main shaft 1, the main shaft key 10 and the main shaft sleeve 2 are sequentially connected, and are driven by the main shaft 1 to perform rotary motion; the friction ring 3, the cover 4, the spring 5, the pressing plate 6, the limit guide post 7, the locking screw 8 and the stud 9 are connected in sequence, and no movement exists in the rotating direction of the main shaft; the friction ring 3 is attached to the spindle sleeve 2 under the action of spring force to form friction.
During tooth position compensation, the thread rolling wheel 25, the second gasket 18, the inner ring 14 of the needle bearing, the first gasket 12, the spindle gland 11, the spindle 1, the spindle sleeve 2, the spindle key 10, the inner ring of the roller bearing 20 and the locking nut 22 are consistent with the horizontal movement direction of the spindle 1. The front bearing gland 13, the front support 16, the rear bearing gland 17, the bearing gland 19, the rear support 21 and the speed reducer base 23 are fixed without horizontal and rotary movement.
Example 2
The number of the springs 5 is 4, and the rest is the same as in example 1.
Example 3
The number of the springs 5 is 16, and the rest is the same as in embodiment 1.
Claims (10)
1. The utility model provides a have thread rolling machine main shaft of tooth position compensation and damping function concurrently, includes main shaft (1), speed reducer seat (23), thrust ball bearing (24), thread rolling wheel (25), back support (21), preceding support (16), roller bearing (20), needle bearing (15), its characterized in that: still include tooth position compensation and damping device, install thrust ball bearing (24) between main shaft (1) and speed reducer seat (23), install thread rolling wheel (25) on the main shaft, install in back support (21) through roller bearing (20) on the main shaft of thread rolling wheel (25) left end, install in front support (16) through bearing (15) on the main shaft of thread rolling wheel (25) right-hand member, tooth position compensation and damping device are installed to the one end of back support (21), main shaft (1) runs through thrust ball bearing (24), roller bearing (20), tooth position compensation and damping device, thread rolling wheel (25), bearing (15) are installed in back support (21), front support (16) respectively.
2. The thread rolling machine spindle with tooth position compensation and damping functions according to claim 1, wherein: the tooth position compensation and damping device comprises a bearing cover (19), a main shaft sleeve (2), a friction ring (3), a cover (4), a spring (5), a pressing plate (6), a limiting guide post (7) and a locking screw (8), one end of the bearing cover (19) is arranged at one end of a rear support (21), a stud (9) is arranged at the other end of the bearing cover (19), the main shaft sleeve (2) and the friction ring (3) are sequentially arranged in a space surrounded by the studs (9), a mounting hole is formed in the friction ring (3), the limiting guide post (7) is arranged in the mounting hole, a cover through hole (26) and a cover mounting hole (27) are formed in the cover (4), the stud (9) sequentially penetrates through the cover through hole (26) in the cover (4) and the pressing plate through hole in the pressing plate (6) and is fixed through the locking screw (8), and the spring (5) is arranged in the cover mounting hole (27).
3. The thread rolling machine spindle with tooth position compensation and damping functions according to claim 1, wherein: the rolling needle bearing further comprises a front bearing gland (13) and a rear bearing gland (17), wherein the front bearing gland (13) and the rear bearing gland (17) are respectively arranged in front of and behind the needle bearing (15).
4. The thread rolling machine spindle with tooth position compensation and damping functions according to claim 1, wherein: the tail end of the main shaft (1) is provided with a main shaft gland (11).
5. The thread rolling machine spindle with tooth position compensation and damping functions according to claim 1, wherein: the needle bearing (15) comprises a needle bearing inner ring and a needle bearing outer ring, the needle bearing inner ring is fixedly arranged on the main shaft (1), and the needle bearing outer ring is arranged on the front support (16).
6. The thread rolling machine spindle with tooth position compensation and damping functions according to claim 1, wherein: the roller bearing (20) comprises a roller bearing inner ring and a roller bearing outer ring, wherein the roller bearing inner ring is installed on the main shaft (1), and the roller bearing outer ring is installed on the rear support (21).
7. The thread rolling machine spindle with tooth position compensation and damping functions according to claim 2, wherein: the number of the springs (5) is 4-16, and the number of the studs (9) is 4.
8. The thread rolling machine spindle with tooth position compensation and damping functions according to claim 7, wherein: the number of the springs (5) is 12.
9. The thread rolling machine spindle with tooth position compensation and damping functions according to claim 2, wherein: the main shaft (1) is further provided with a main shaft key (10), and the main shaft sleeve (2) is arranged on the main shaft (1) through the main shaft key (10).
10. The thread rolling machine spindle with tooth position compensation and damping functions according to claim 9, wherein: the main shaft cover (2) comprises an annular body (28), a cylinder (29) and a key groove (30), wherein the bottom end of the cylinder (29) is connected with the top end of the annular body (28), the key groove (30) is arranged on the inner walls of the annular body (28) and the cylinder (29), and the key groove (30) is matched with the main shaft key (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320939131.0U CN220739351U (en) | 2023-04-24 | 2023-04-24 | Thread rolling machine spindle with tooth position compensation and damping functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320939131.0U CN220739351U (en) | 2023-04-24 | 2023-04-24 | Thread rolling machine spindle with tooth position compensation and damping functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220739351U true CN220739351U (en) | 2024-04-09 |
Family
ID=90551400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320939131.0U Active CN220739351U (en) | 2023-04-24 | 2023-04-24 | Thread rolling machine spindle with tooth position compensation and damping functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220739351U (en) |
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2023
- 2023-04-24 CN CN202320939131.0U patent/CN220739351U/en active Active
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