CN213857456U - Integrated lathe with gear hobbing function - Google Patents
Integrated lathe with gear hobbing function Download PDFInfo
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- CN213857456U CN213857456U CN202022309227.8U CN202022309227U CN213857456U CN 213857456 U CN213857456 U CN 213857456U CN 202022309227 U CN202022309227 U CN 202022309227U CN 213857456 U CN213857456 U CN 213857456U
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- 230000007246 mechanism Effects 0.000 claims abstract description 116
- 230000033001 locomotion Effects 0.000 claims abstract description 50
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- 230000001105 regulatory effect Effects 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 19
- 238000003754 machining Methods 0.000 abstract description 18
- 230000003028 elevating effect Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 13
- 230000008901 benefit Effects 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
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- 230000017525 heat dissipation Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
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- 238000009434 installation Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
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Abstract
The utility model relates to a digit control machine tool technical field, concretely relates to integral type lathe with gear hobbing function, including turning mechanism and the work piece fixture of setting on the lathe bed, turning mechanism has linear electric motor combined motion mechanism, still is equipped with gear hobbing mechanism on linear electric motor combined motion mechanism, gear hobbing mechanism includes the gear hobbing head, still including the elevating system who is used for driving gear hobbing head elevating movement and the linear drive device of driving gear hobbing head linear motion. The lathe is provided with the turning mechanism and the gear hobbing mechanism on the lathe body simultaneously, so that the turning and gear hobbing can be conveniently completed on the same lathe, the transfer cost and the use cost of special gear hobbing equipment are reduced, the production cost is reduced, and the production efficiency is improved; the linear motor combined motion mechanism is utilized to realize accurate positioning, ensure the machining precision of turning and hobbing and really realize the hobbing on a lathe.
Description
Technical Field
The utility model relates to a digit control machine tool, especially have integral type lathe of gear hobbing function.
Background
As a large country of manufacturing industry, the application rate of machine tools in China is extremely high, and particularly, the machine tools are widely applied to numerical control machines, so that the machine tools play a great role in promoting the production quality of products. The general processing mode of the existing gear is to finish the blank processing on a lathe firstly and then take the blank to a special gear hobbing machine for processing, so that the processing cost and the time cost are both high, and the gear hobbing machine does not adapt to the requirements of modern industrial manufacturing.
The gear types are various, and a special gear hobbing machine is still needed for processing under the conditions of low precision requirement and low gear weight, the cost of transportation and equipment is high, the processing cost is high, the production efficiency is low, and the gear hobbing machine is not suitable for modern energy-saving and green manufacturing requirements.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: aiming at the problems that the blank processing is firstly completed on a lathe and then the gear hobbing is needed to be transferred to a special gear hobbing machine for gear hobbing, the use cost of transfer and equipment is high, the cost is high, the production efficiency is low, and the gear hobbing machine is not suitable for the modern energy-saving and green manufacturing requirement, the integrated lathe with the gear hobbing function is provided, and the turning mechanism and the gear hobbing mechanism are simultaneously arranged on the lathe body of the lathe, so that the turning and gear hobbing can be conveniently completed on the same lathe, the transfer cost and the use cost of special gear hobbing equipment are reduced, the production cost is reduced, and the production efficiency is improved; the linear motor combined motion mechanism is utilized to realize accurate positioning, ensure the machining precision of turning and hobbing and really realize the hobbing on a lathe.
In order to realize the purpose, the utility model discloses a technical scheme be:
the integral lathe with the hobbing function comprises a turning mechanism and a workpiece clamping mechanism which are arranged on a lathe body, wherein a linear motor combined movement mechanism is arranged below the turning mechanism, a hobbing mechanism is further arranged on the linear motor combined movement mechanism, the hobbing mechanism comprises a hobbing head, a lifting mechanism used for driving the hobbing head to move up and down, and a linear driving device used for driving the hobbing head to move linearly.
The lathe body of the machine tool is simultaneously provided with the turning mechanism and the gear hobbing mechanism, so that the turning and gear hobbing can be conveniently completed on the same lathe, the transfer cost and the use cost of special gear hobbing equipment are reduced, the production cost is reduced, and the production efficiency is improved; and the linear electric motor combination motion of cooperation installation utilizes linear electric motor motion inertia little, system rigidity is high, the quick advantage of response, it is big to avoid lead screw subassembly transmission and belt transmission to have motion inertia, the lead screw has reverse clearance's problem, and then guarantees turning mechanism and gear hobbing mechanism's linear motion precision, realize accurate location, guarantee turning process and gear hobbing machining precision, the drive equipment of the first elevating movement of drive gear hobbing and linear motion of deuterogamying, be adapted to different profile of tooth processing demands, really realize gear hobbing on the lathe.
As the preferred scheme of the utility model, linear electric motor combined movement mechanism includes horizontal linear electric motor and vertical linear electric motor, vertical linear electric motor sets up on horizontal linear electric motor, and two linear electric motor's direction of motion are mutually perpendicular. The transverse linear motor and the longitudinal linear motor are arranged on the lathe bed, so that transverse and longitudinal high-precision feeding motion of the turning mechanism and the gear hobbing mechanism is realized, and the machining precision is ensured.
As the utility model discloses an optimal scheme, horizontal linear electric motor is equipped with two rows of parallel arrangement's horizontal slide rail including setting up the horizontal slip table on the lathe bed on horizontal slip table, the U type module of integral type is constituteed with horizontal slip table to horizontal slide rail, and horizontal linear electric motor stator sets up the U-shaped inslot at U type module. The transverse sliding rail arranged on the transverse sliding table is used for guaranteeing the accuracy of transverse movement, and the transverse sliding table is arranged to provide a stable operation foundation for the whole turning mechanism and the hobbing mechanism.
As the utility model discloses a preferred scheme, vertical linear electric motor is equipped with the spout that corresponds with horizontal slide rail including setting up the planker in U type die group top on the face that planker and U type die group contacted, and is equipped with the slider at the spout fit in, and horizontal linear electric motor active cell is installed on the planker. A carriage is used for mounting a longitudinal linear motor, a sliding groove and a sliding block which correspond to the sliding rail are arranged on the carriage, a rotor of the transverse linear motor is mounted on the carriage, and after a workpiece chuck mechanism is mounted on the longitudinal linear motor, transverse and longitudinal accurate movement of the turning mechanism is achieved.
As the utility model discloses an optimal scheme, vertical linear electric motor stator is settled in the planker top, still is equipped with two rows of parallel arrangement's vertical supplementary slide rail on the planker, is equipped with T type groove slip table above the planker to be equipped with the slip subassembly with vertical supplementary slide rail cooperation on T type groove slip table, vertical linear electric motor active cell sets up on T type groove slip table. The T-shaped groove sliding table is used for installing the turning mechanism and the hobbing mechanism, the longitudinal linear motor rotor is installed on the T-shaped groove sliding table, high-precision longitudinal sliding of the turning mechanism and the hobbing mechanism is achieved, machining precision is guaranteed, the size of a machine tool is greatly reduced due to application of the linear motor combined motion mechanism, and the numerical control machine tool is suitable for size requirements of a numerical control machine tool.
As the utility model discloses an optimal scheme, elevating system installs on T type groove slip table, even there is the angle regulation and control device between elevating system and the gear hobbing mechanism.
As the preferred scheme of the utility model, angle regulation and control device includes axis of rotation and rotation angle controller, still is equipped with the angle carousel of being connected with the axis of rotation.
As the utility model discloses an optimal scheme, gear hobbing mechanism is equipped with the carousel butt joint including even gear hobbing head and linear stepping motor as an organic whole between gear hobbing head and linear stepping motor, the carousel butt joint corresponds with the angle carousel and is equipped with connection structure.
The linear motor combined motion mechanism and the rotating shaft of the lathe are provided with encoders, the feeding motion speed and position of the turning mechanism are fed back, the speed and the rotating angle of the hobbing mechanism are fed back, accurate positioning and position control are realized, and the machining of different tooth shapes is realized by accurately adjusting the relative angle between the hobbing head and a workpiece.
As the utility model discloses an optimal scheme, work piece fixture is equipped with the direct-drive formula main shaft assembly who is used for driving its rotary motion, direct-drive formula main shaft assembly includes the main shaft, the main shaft has set the motor, the motor is including overlapping in the outer rotor of main shaft and overlapping in the outer stator of rotor, and it has the main shaft body still to overlap outside the stator, rotor, stator and the coaxial setting of main shaft body.
The direct-drive spindle assembly has the advantages that the motor and the spindle are coaxially designed, the structure is simple, the synchronization efficiency is improved, the transmission effect is ensured, the transmission and positioning problems caused by gear or belt wheel transmission are reduced, the vibration of a workpiece is reduced as much as possible, and the machining precision of the workpiece is ensured; and the turning mechanism and the gear hobbing mechanism are matched, the high-precision operation advantage of the linear motor combined motion mechanism is utilized, the traditional multiple processing procedures can be completed by one-time clamping on the lathe, and the gear hobbing processing is completed, so that the clamping time of the traditional process is reduced, meanwhile, the product collision is reduced, the production efficiency is improved, and the labor cost is reduced.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the lathe is provided with the turning mechanism and the gear hobbing mechanism on the lathe body simultaneously, so that the turning and gear hobbing can be conveniently completed on the same lathe, the transfer cost and the use cost of special gear hobbing equipment are reduced, the production cost is reduced, and the production efficiency is improved; the linear motor is utilized to combine the motion mechanism, so that accurate positioning is realized, the turning machining and hobbing machining precision is ensured, and the hobbing machining is really realized on a lathe;
2. the T-shaped groove sliding table is used for mounting a turning mechanism and a hobbing mechanism, and the longitudinal linear motor rotor is mounted on the T-shaped groove sliding table, so that the turning mechanism and the hobbing mechanism can longitudinally slide at high precision, the machining precision is ensured, and the volume of a machine tool is greatly reduced due to the application of a linear motor combined motion mechanism, so that the size requirement of a numerical control machine tool is met;
3. the linear motor combined motion mechanism and the rotating shaft of the lathe are provided with encoders, the feeding motion speed and position of the turning mechanism are fed back, the speed and the rotating angle of the hobbing mechanism are fed back, accurate positioning and position control are realized, and the machining of different tooth shapes is realized by accurately adjusting the relative angle between the hobbing head and a workpiece;
4. the direct-drive spindle assembly has the advantages that the motor and the spindle are coaxially designed, the structure is simple, the synchronization efficiency is improved, the transmission effect is ensured, the transmission and positioning problems caused by gear or belt wheel transmission are reduced, the vibration of a workpiece is reduced as much as possible, and the machining precision of the workpiece is ensured.
Drawings
Fig. 1 is a front view of the integrated lathe with a hobbing function of the present invention.
Fig. 2 is an isometric view of an integrated lathe with a hobbing function in an embodiment.
Fig. 3 is a schematic structural diagram of a linear motor combined motion mechanism in the embodiment.
Fig. 4 is a schematic structural diagram of the hobbing mechanism in the embodiment.
Fig. 5 is another view of the hobbing mechanism of fig. 4.
Fig. 6 is a workpiece holding mechanism with a direct drive spindle assembly in an embodiment.
The labels in the figure are: 1-lathe bed, 2-transverse linear motor, 201-U-shaped module, 202-transverse sliding rail, 203-transverse linear motor stator, 204-transverse linear motor rotor, 205-workpiece clamping seat mounting table, 3-longitudinal linear motor, 301-sliding block, 302-dragging plate, 303-longitudinal linear motor rotor, 304-longitudinal linear motor stator, 305-longitudinal auxiliary sliding rail, 4-T-shaped groove sliding table, 5-direct-drive spindle assembly, 501-brake disc, 502-brake caliper, 6-turning mechanism, 7-hobbing mechanism, 701-hobbing head, 702-angle turntable, 703-turntable butt joint, 704-linear stepping motor and 8-lifting mechanism.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
As shown in fig. 1 to 6, the integrated lathe with a hobbing function of the present embodiment includes a turning mechanism 6 and a workpiece clamping mechanism which are arranged on a lathe bed 1, a linear motor combined motion mechanism is arranged below the turning mechanism 6, a hobbing mechanism 7 is further arranged on the linear motor combined motion mechanism, and the hobbing mechanism 7 includes a hobbing head 701, and further includes a lifting mechanism 8 for driving the hobbing head 701 to move up and down, and a linear driving device for driving the hobbing head 701 to move linearly.
The machine tool of the embodiment is provided with the turning mechanism and the gear hobbing mechanism on the lathe simultaneously, so that the turning and gear hobbing can be conveniently completed on the same lathe, the transfer cost and the use cost of special gear hobbing equipment are reduced, the production cost is reduced, and the production efficiency is improved; and the linear electric motor combination motion of cooperation installation utilizes linear electric motor motion inertia little, system rigidity is high, the quick advantage of response, it is big to avoid lead screw subassembly transmission and belt transmission to have motion inertia, the lead screw has reverse clearance's problem, and then guarantees turning mechanism and gear hobbing mechanism's linear motion precision, realize accurate location, guarantee turning process and gear hobbing machining precision, the drive equipment of the first elevating movement of drive gear hobbing and linear motion of deuterogamying, be adapted to different profile of tooth processing demands, really realize gear hobbing on the lathe.
Example 2
As shown in fig. 1 to 6, according to the integrated lathe with a hobbing function described in embodiment 1, the linear motor combined motion mechanism of this embodiment includes a transverse linear motor 2 and a longitudinal linear motor 3, the longitudinal linear motor 3 is disposed on the transverse linear motor 2, and the motion directions of the two linear motors are perpendicular to each other. The transverse linear motor and the longitudinal linear motor are arranged on the lathe bed, so that transverse and longitudinal high-precision feeding motion of the turning mechanism and the gear hobbing mechanism is realized, and the machining precision is ensured.
Specifically, the transverse linear motor 2 comprises a transverse sliding table arranged on the bed body 1, two rows of transverse sliding rails 202 arranged in parallel are arranged on the transverse sliding table, the transverse sliding rails 202 and the transverse sliding table form an integrated U-shaped module 201, and a transverse linear motor stator 203 is arranged in a U-shaped groove of the U-shaped module 201. The transverse sliding rail arranged on the transverse sliding table is used for guaranteeing the accuracy of transverse movement, and the transverse sliding table is arranged to provide a stable operation foundation for the whole turning mechanism and the hobbing mechanism.
Further, the longitudinal linear motor 3 includes a carriage 302 disposed above the U-shaped module 201, a sliding groove corresponding to the transverse sliding rail 202 is disposed on a surface of the carriage 302 contacting the U-shaped module 201, a sliding block 301 is disposed in the sliding groove in a matching manner, and the transverse linear motor rotor 204 is mounted on the carriage 302. A carriage is used for mounting a longitudinal linear motor, a sliding groove and a sliding block which correspond to the sliding rail are arranged on the carriage, a rotor of the transverse linear motor is mounted on the carriage, and after a workpiece chuck mechanism is mounted on the longitudinal linear motor, transverse and longitudinal accurate movement of the turning mechanism is achieved. As shown in fig. 3, a workpiece clamping seat mounting table 205 is further provided at an end of the U-shaped module 201 close to the workpiece clamping mechanism for mounting the workpiece clamping mechanism and a driving device thereof.
In this embodiment, the longitudinal linear motor stator 304 is disposed above the carriage 302, two rows of longitudinal auxiliary sliding rails 305 are further disposed on the carriage 302 in parallel, a T-shaped groove sliding table 4 is disposed above the carriage 3.2, a sliding assembly is disposed on the T-shaped groove sliding table 4 in cooperation with the longitudinal auxiliary sliding rails 305, and the longitudinal linear motor rotor 303 is disposed on the T-shaped groove sliding table 4. The T-shaped groove sliding table is used for installing the turning mechanism and the hobbing mechanism, the longitudinal linear motor rotor is installed on the T-shaped groove sliding table, high-precision longitudinal sliding of the turning mechanism and the hobbing mechanism is achieved, machining precision is guaranteed, the size of a machine tool is greatly reduced due to application of the linear motor combined motion mechanism, and the numerical control machine tool is suitable for size requirements of a numerical control machine tool.
Example 3
As shown in fig. 1 to 6, according to the integrated lathe with a hobbing function described in embodiment 2, the lifting mechanism 8 of this embodiment is installed on the T-shaped groove sliding table 4, and an angle adjusting device is connected between the lifting mechanism 8 and the hobbing mechanism 7. As shown in fig. 2, the lifting mechanism 8 is disposed at the end of the T-shaped groove sliding table 4 so as to be movable laterally and longitudinally with the T-shaped groove sliding table 4.
In this embodiment, the angle adjusting and controlling device includes a rotating shaft and a rotating angle controller, and is further provided with an angle turntable 702 connected to the rotating shaft.
Further, the hobbing mechanism 7 includes a hobbing head 701 and a linear stepping motor 704 connected as a whole, a turntable butt joint 703 is provided between the hobbing head 701 and the linear stepping motor 704, and the turntable butt joint 703 and the angle turntable 702 are provided with a connecting structure correspondingly.
Specifically, the linear motor combined motion mechanism and the rotating shaft of the lathe are provided with encoders, the feeding motion speed and position of the turning mechanism are fed back, the speed and the rotating angle of the hobbing mechanism are fed back, accurate positioning and position control are realized, and the machining of different tooth shapes is realized by accurately adjusting the relative angle between the hobbing head and a workpiece.
Example 4
As shown in fig. 1 to 6, according to the integrated lathe with a hobbing function described in embodiment 2, the workpiece clamping mechanism of this embodiment is provided with a direct drive spindle assembly 5 for driving the workpiece clamping mechanism to rotate, the direct drive spindle assembly 5 includes a spindle, the spindle is provided with a motor, the motor includes a rotor sleeved outside the spindle and a stator sleeved outside the rotor, the stator is further sleeved with a spindle body, and the rotor, the stator and the spindle body are coaxially arranged.
The direct-drive spindle assembly has the advantages that the motor and the spindle are coaxially designed, the structure is simple, the synchronization efficiency is improved, the transmission effect is ensured, the transmission and positioning problems caused by gear or belt wheel transmission are reduced, the vibration of a workpiece is reduced as much as possible, and the machining precision of the workpiece is ensured; and the turning mechanism and the gear hobbing mechanism are matched, the high-precision operation advantage of the linear motor combined motion mechanism is utilized, the traditional multiple processing procedures can be completed by one-time clamping on the lathe, and the gear hobbing processing is completed, so that the clamping time of the traditional process is reduced, meanwhile, the product collision is reduced, the production efficiency is improved, and the labor cost is reduced.
Furthermore, a front end cover and a rear end cover are respectively arranged at two ends of the main shaft body, bearing chambers are respectively arranged on the front end cover and the rear end cover, a plurality of bearings sleeved on the main shaft are arranged in the bearing chambers, an encoder and a braking system which are arranged on the outer side of the dust cover are sleeved on the main shaft, and the braking system comprises a braking disc 501 sleeved on the main shaft and a braking caliper 502 used for controlling the braking of the braking disc. The brake disc and the brake caliper which are arranged on the main shaft exert an external braking force when the main shaft stops, and the function of quickly stopping the rotation of the main shaft is achieved.
Furthermore, a heat dissipation device coaxial with the spindle is arranged on the outer side of the spindle body, the heat dissipation device comprises an outer casing covering the outer side of the spindle body, the outer casing and the spindle body are of an integrated structure, a plurality of cooling holes are formed in the circumferential direction of the outer casing, cooling channel sealing covers are arranged at two ends of the outer casing, and pipeline joints are arranged on the cooling channel sealing covers.
After the pipeline joint on the cooling channel sealing cover is connected with a cooling pipeline, adjacent cooling channels form a heat dissipation channel, and compressed air or cooling liquid is introduced into the heat dissipation channel to realize cooling.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The integral lathe with the hobbing function is characterized by comprising a turning mechanism and a workpiece clamping mechanism which are arranged on a lathe body, wherein a linear motor combined movement mechanism is arranged below the turning mechanism, a hobbing mechanism is further arranged on the linear motor combined movement mechanism, the hobbing mechanism comprises a hobbing head, a lifting mechanism used for driving the hobbing head to move up and down, and a linear driving device used for driving the hobbing head to move linearly.
2. The integrated lathe with the hobbing function as claimed in claim 1, wherein the linear motor combined motion mechanism comprises a transverse linear motor and a longitudinal linear motor, the longitudinal linear motor is arranged on the transverse linear motor, and the motion directions of the two linear motors are perpendicular.
3. The integrated lathe with the hobbing function according to claim 2, characterized in that the transverse linear motor comprises a transverse sliding table arranged on the lathe bed, two rows of transverse sliding rails arranged in parallel are arranged on the transverse sliding table, the transverse sliding rails and the transverse sliding table form an integrated U-shaped module, and a transverse linear motor stator is arranged in a U-shaped groove of the U-shaped module.
4. The one-piece lathe with a hobbing function of claim 3, characterized in that the longitudinal linear motor comprises a carriage arranged above the U-shaped die set, a sliding groove corresponding to the transverse sliding rail is arranged on a surface of the carriage contacted with the U-shaped die set, a sliding block is arranged in the sliding groove in a matching manner, and a transverse linear motor rotor is arranged on the carriage.
5. The integrated lathe with hobbing function of claim 4, characterized in that a longitudinal linear motor stator is arranged above the carriage, two rows of longitudinal auxiliary slide rails are arranged in parallel on the carriage, a T-shaped groove sliding table is arranged above the carriage, a sliding component is arranged on the T-shaped groove sliding table and matched with the longitudinal auxiliary slide rails, and a longitudinal linear motor rotor is arranged on the T-shaped groove sliding table.
6. The integrated lathe with the hobbing function of claim 5, wherein the lifting mechanism is installed on a T-shaped groove sliding table, and an angle regulating device is connected between the lifting mechanism and the hobbing mechanism.
7. The all-in-one lathe with the hobbing function as claimed in claim 6, wherein the angle regulating device comprises a rotating shaft and a rotation angle controller, and an angle rotating disc connected with the rotating shaft is further provided.
8. The integrated lathe with hobbing function of claim 7, characterized in that the hobbing mechanism comprises a hobbing head and a linear stepping motor which are connected into a whole, a rotary table butt joint is arranged between the hobbing head and the linear stepping motor, and the rotary table butt joint is provided with a connecting structure corresponding to the angle rotary table.
9. The machine tool with a hobbing function of any one of claims 1-8, characterized in that the workpiece holding mechanism is provided with a direct-drive spindle assembly for driving the workpiece holding mechanism to rotate, the direct-drive spindle assembly comprises a spindle, the spindle is provided with a motor, the motor comprises a rotor sleeved outside the spindle and a stator sleeved outside the rotor, a spindle body is further sleeved outside the stator, and the rotor, the stator and the spindle body are coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022309227.8U CN213857456U (en) | 2020-10-16 | 2020-10-16 | Integrated lathe with gear hobbing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022309227.8U CN213857456U (en) | 2020-10-16 | 2020-10-16 | Integrated lathe with gear hobbing function |
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| Publication Number | Publication Date |
|---|---|
| CN213857456U true CN213857456U (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022309227.8U Active CN213857456U (en) | 2020-10-16 | 2020-10-16 | Integrated lathe with gear hobbing function |
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|---|---|
| CN (1) | CN213857456U (en) |
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2020
- 2020-10-16 CN CN202022309227.8U patent/CN213857456U/en active Active
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Effective date of registration: 20240311 Address after: No. 418 Fangzhai Village, Huacong Town, Enyang District, Bazhong City, Sichuan Province, 636000 Patentee after: Zheng Chunmei Country or region after: China Address before: 641200 Fengxiang East Road, Fenghuangling District, economic development zone, Zizhong County, Neijiang City, Sichuan Province Patentee before: SICHUAN CHENTIAN MACHINE TOOL MANUFACTURING Co.,Ltd. Country or region before: China |