CN113135046A - Deburring, marking and tooth searching integrated machine for transmission shaft - Google Patents
Deburring, marking and tooth searching integrated machine for transmission shaft Download PDFInfo
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- CN113135046A CN113135046A CN202110313768.4A CN202110313768A CN113135046A CN 113135046 A CN113135046 A CN 113135046A CN 202110313768 A CN202110313768 A CN 202110313768A CN 113135046 A CN113135046 A CN 113135046A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
- B23D79/02—Machines or devices for scraping
- B23D79/021—Machines or devices for scraping for removing welding, brazing or soldering burrs, e.g. flash, on pipes or rods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/44—Typewriters or selective printing mechanisms having dual functions or combined with, or coupled to, apparatus performing other functions
- B41J3/445—Printers integrated in other types of apparatus, e.g. printers integrated in cameras
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Gear Processing (AREA)
Abstract
The invention provides a deburring, marking and tooth searching integrated machine for a transmission shaft, and solves the problems of low working efficiency, low processing quality and easiness in collision and scratching in the processing of the transmission shaft in the prior art. The deburring, marking and tooth searching integrated machine comprises a base, a stroke mechanism, an end face driving mechanism, a deburring mechanism, a tooth searching mechanism and a marking mechanism; the stroke mechanism comprises a stroke driving device, a guiding device and a supporting seat, the stroke driving device and the guiding device are arranged on the base, and the stroke driving device drives the supporting seat to move along the X direction under the action of the guiding device; the end face driving mechanism is used for clamping a processed workpiece in an axial direction and rotating the processed workpiece; a scraper in the deburring mechanism performs deburring treatment under the thrust action of the deburring cylinder; the tooth searching mechanism comprises a proximity switch and is used for detecting the positions of the tooth top and the tooth bottom; the marking mechanism is used for marking the end face of the processed workpiece by using the product label and marking the end face by using an O label.
Description
Technical Field
The invention relates to a deburring and marking device, in particular to a deburring, marking and tooth searching integrated machine for a transmission shaft.
Background
The transmission shaft is an important component of the gearbox, the transmission shaft needs to be subjected to processes of deburring, marking product labels on the shaft end surface, and punching O in tooth grooves in the machining process, and the current machining process is as follows: after the transmission shaft passes through the hobbing, burrs generated on the end face are deburred by an operator on a deburring station by using a white steel bar, after the burrs are removed, two O-shaped marks are randomly hammered on a workpiece on the left side and the right side of any tooth groove by using a copper hammer and a special O-shaped mark tool, and finally the part is transferred to a pneumatic marking machine to be marked. However, the above process has the following problems: 1) because the area of the end face of the tooth generated by the burr is small, the deburring operation of an operator is very inconvenient, the burr is often not completely removed, the accidental burr or the white steel bar cuts the gloves, and the working efficiency is low; 2) the O mark is hit by a copper hammer, so that the danger coefficient is high, the quality problems of partial hitting, unclear O mark and the like are easily caused, and the processing quality is low; 3) the workpiece is transferred for many times, and the risk of collision and scratching is high.
Disclosure of Invention
The invention aims to solve the problems of low working efficiency, low processing quality and easy collision and scratch in the existing transmission shaft processing, and provides a deburring, marking and tooth searching integrated machine for a transmission shaft.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a deburring, marking and tooth searching integrated machine for a transmission shaft comprises a base, a stroke mechanism, an end face driving mechanism, a deburring mechanism, a tooth searching mechanism and a marking mechanism; setting the upper end surface of the base as an XY plane, and arranging the stroke mechanism, the end surface drive mechanism deburring mechanism, the tooth searching mechanism and the marking mechanism on the upper end surface of the base; the stroke mechanism comprises a stroke driving device, a guiding device and a supporting seat, the stroke driving device and the guiding device are arranged on the base, the output end of the stroke driving device is connected with the supporting seat, and the supporting seat is driven to move along the X direction under the guiding of the guiding device, so that a workpiece to be processed is driven to move along the X direction; the end face driving mechanism comprises an end face driving device and a pneumatic tailstock, which are arranged on the base and used for axially clamping and rotating a workpiece to be processed; the deburring mechanism comprises a deburring cylinder and a scraper, the deburring cylinder is arranged on the base, an output shaft of the deburring cylinder is connected with the scraper and used for realizing the movement of the scraper in the Y-axis direction, and meanwhile, under the thrust action of the deburring cylinder, the end face of the scraper is extruded with burrs to perform deburring treatment; the tooth searching mechanism comprises a proximity switch, and the proximity switch is arranged on the base and used for detecting the positions of the tooth top and the tooth root and realizing the circumferential position detection of the processed workpiece; the marking mechanism comprises a first pneumatic marking machine, a second pneumatic marking machine and a marking positioning unit; the marking positioning unit comprises a marking cylinder and a push block, the marking cylinder is arranged on the base, and the push block is arranged on an output shaft of the marking cylinder and used for pushing a processed workpiece to a marking position; the first pneumatic marking machine is arranged in the Y-axis direction and used for marking the end face of a machined workpiece with a product label, and the second pneumatic marking machine is arranged in the X-axis direction and used for printing O marks on two sides of the tooth groove of the machined workpiece.
Further, the bottom of scraper is provided with the sweeps and collects the box for the sweeps that produces when being used for the burring is collected.
Furthermore, the sweeps collection box is arranged on the base through a sweeps box fixing plate to fix the sweeps collection box.
Further, the output shaft coaxial line setting of beating the printer head of first pneumatic marking machine and beating the mark cylinder.
Further, the end face driving mechanism and the pneumatic tailstock are arranged coaxially.
Further, mark cylinder sets up on the base through marking cylinder positioning seat.
Further, the stroke driving device is a rodless cylinder, and an output sliding block of the rodless cylinder is connected with the supporting seat.
Further, the supporting seat is a V-shaped seat.
Further, the end face driving device comprises a motor, a speed reducer, a coupler and a tip, the motor is connected with the coupler through the speed reducer, and the coupler is connected with the machined workpiece through the tip, so that the machined workpiece is driven to rotate.
Further, the proximity switch is arranged on the base through the proximity switch seat.
Compared with the prior art, the invention has the beneficial effects that:
1. the deburring, marking and tooth searching integrated machine can be used for processing burrs on the end face of a shaft hobbing cutter outlet and searching and marking the teeth, four processes of tooth searching, O mark printing, end mark printing, deburring and the like are integrated into one process, so that automatic manufacturing is realized, the production line efficiency is improved, the processing cost is saved, meanwhile, the O mark is automatically completed by adopting a marking mechanism, the quality problems of partial hitting, unclear O mark and the like are avoided, and the processing quality is higher.
2. The deburring, marking and tooth searching integrated machine completes machining on the same station by the operations of tooth searching, O mark printing, end mark printing, deburring and the like, can be applied to production line automation, and does not need to transfer a workpiece for many times, so that the risk of collision and scratching of the workpiece is avoided.
Drawings
FIG. 1 is a schematic structural view of a deburring, marking and tooth searching all-in-one machine for a transmission shaft according to the invention;
FIG. 2 is a top view of the deburring, marking and tooth searching all-in-one machine for the transmission shaft of the present invention;
FIG. 3 is a schematic structural view of an end face drive mechanism of the present invention;
FIG. 4 is a schematic diagram of the deburring, marking and tooth searching integrated machine of the invention;
FIG. 5 is a schematic view of a burr producing end surface of a work piece.
Reference numerals: 1-base, 2-stroke mechanism, 3-end face driving mechanism, 4-deburring mechanism, 5-tooth searching mechanism, 6-marking mechanism, 7-scrap collecting box, 21-stroke driving device, 22-guiding device, 23-supporting seat, 31-end face driving device, 32-pneumatic tailstock, 311-motor, 312-speed reducer, 313-center, 41-deburring cylinder, 42-scraper, 51-proximity switch, 52-proximity switch seat, 61-first pneumatic marking machine, 62-second pneumatic marking machine, 63-marking cylinder, 64-push block and 65-marking cylinder positioning seat.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
The invention provides a deburring, marking and gear-searching integrated machine for a transmission shaft, which integrates four processes of tooth searching, O mark printing, end mark printing, deburring and the like into one process, thereby realizing automatic manufacturing, improving the efficiency of a production line, saving the processing cost, and being capable of processing burrs on the end surface of a knife-edge of shaft hobbing and tooth searching and marking.
As shown in fig. 1 to 4, the deburring, marking and tooth searching integrated machine for the transmission shaft provided by the invention comprises a base 1, a stroke mechanism 2, an end face driving mechanism 3, a deburring mechanism 4, a tooth searching mechanism 5 and a marking mechanism 6; setting the upper end surface of the base 1 as an XY plane, and arranging the stroke mechanism 2, the end surface driving mechanism 3, the deburring mechanism 4, the tooth searching mechanism 5 and the marking mechanism 6 on the upper end surface of the base 1; the stroke mechanism 2 comprises a stroke driving device 21, a guide device 22 and a support seat 23, the stroke driving device 21 and the guide device 22 are arranged on the base 1, the output end of the stroke driving device 21 is connected with the support seat 23, and the support seat 23 is driven to move along the X direction under the guidance of the guide device 22, so that a workpiece to be processed is driven to move along the X direction; the end face driving mechanism 3 comprises an end face driving device 31 and a pneumatic tailstock 32 which are arranged on the base 1, and the end face driving device 31 and the pneumatic tailstock 32 are coaxially arranged and used for axially clamping and rotating a workpiece to be processed; specifically, the end face driving device 31 includes a motor 311, a speed reducer 312, a coupling and a tip 313, the motor 311 is connected with the coupling through the speed reducer 312, and the coupling is connected with the workpiece to be machined through the tip 313, so as to drive the workpiece to be machined to rotate; the deburring mechanism 4 comprises a deburring cylinder 41 and a scraper 42, the deburring cylinder 41 is arranged on the base 1, an output shaft of the deburring cylinder is connected with the scraper 42 and used for realizing the movement of the scraper 42 in the Y-axis direction, and meanwhile, under the thrust action of the deburring cylinder 41, the end face of the scraper 42 is extruded with burrs to carry out deburring treatment; the tooth searching mechanism 5 comprises a proximity switch 51, and the proximity switch 51 is arranged on the base 1 through a proximity switch seat 52 and is used for detecting the positions of the tooth top and the tooth bottom to realize the circumferential position detection of a processed workpiece; the marking mechanism 6 comprises a first pneumatic marking machine 61, a second pneumatic marking machine 62 and a marking positioning unit; the marking positioning unit comprises a marking cylinder 63 and a push block 64, the marking cylinder 63 is arranged on the base 1 through a marking cylinder positioning seat 65, and the push block 64 is arranged on an output shaft of the marking cylinder 63 and used for pushing a processed workpiece to a marking position; first pneumatic marking machine 61 sets up in Y axle direction, and the output shaft coaxial line setting of beating marking cylinder 63 is beaten to the printer head of first pneumatic marking machine 61 for carry out the product label to the work piece terminal surface and beat the mark, the pneumatic marking machine 62 of second sets up in X axle direction, is used for printing O mark to the tooth's socket both sides of work piece.
In the deburring, marking and tooth searching integrated machine, the bottom end of the scraper 42 is provided with the scrap collecting box 7 for collecting scraps generated during deburring, and the scrap collecting box 7 is arranged on the base 1 through the scrap box fixing plate and is used for fixing the base 1. The stroke driving device 21 is a rodless cylinder, an output slider of the rodless cylinder is connected with a support seat 23, and the support seat 23 can be a V-shaped seat.
The invention relates to a deburring and marking integrated machine, which operates automatically, a mechanical arm puts a processed workpiece on a V-shaped seat, a supplied material detection device detects the supplied material, a signal is sent to a stroke driving device 21 (which can be a stroke cylinder), the stroke cylinder moves the processed workpiece to a deburring and marking position, an end surface driving mechanism 3 and a pneumatic tailstock 32 clamp the workpiece to start rotating after an approach switch 51 detects the supplied material, a deburring mechanism 4 pushes a scraper 42 to be in contact with the processed workpiece after receiving the rotation signal of the processed workpiece, deburring is started, the deburring cylinder 41 returns to an initial position to wait for tooth searching of the approach switch 51 after deburring is completed, the end surface driving mechanism 3 rotates the processed workpiece to a fixed position through the signal of the approach switch 51, the pneumatic tailstock 32 leaves a central hole of the processed workpiece, the scraper 42 pushes the processed workpiece away from an end surface driving mandrel and returns to the initial position to wait, the stroke cylinder moves the processed workpiece to the marking position, the first pneumatic marking machine 61 and the second pneumatic marking machine 62 start marking, and after marking is completed, the manipulator performs blanking.
The processing principle is as follows: as shown in fig. 5, burrs are generated on the end face of the tooth at the tool outlet after the workpiece is hobbed, and the machining position is mainly divided into a marking position and a deburring tooth searching position, and as shown in fig. 2, the marking position is also a feeding position of the manipulator. Manipulator material loading, marking cylinder 63 and ejector pad 64 in marking mechanism 6 this moment are initial position, do not contact with the work piece, stroke mechanism 2 moves the work piece from marking the displacement to burring and seek the tooth position, terminal surface actuating mechanism 3 presss from both sides the tight start rotation of work piece clamp, deburring mechanism 4 begins to move to the burr terminal surface, under the thrust effect of cylinder, scraper 42 terminal surface produces the extrusion with the burr, scraper 42 receives burr terminal surface frictional force, rotate together with the work piece, burr terminal surface and scraper 42 are at the pivoted in-process, protruding burr receives the axial extrusion and the radial extrusion of scraper 42 and drops to iron fillings collection box from the work piece terminal surface, accomplish the burring.
And then the deburring mechanism 4 leaves the end face of the burr, the rotating speed of the processed workpiece is reduced, the proximity switch 51 in the tooth searching mechanism 5 starts to detect the positions of the tooth top and the tooth root, after the detection is finished, the proximity switch 51 transmits a signal to the end face driving mechanism 3, the processed workpiece is driven to a fixed angle to stop rotating, and at the moment, the processed workpiece completes tooth searching. Pneumatic tailstock 32 leaves the centre bore of work piece among the terminal surface actuating mechanism 3, and burring mechanism 4 pushes away the work piece to leaving terminal surface drive mandrel after, and stroke mechanism 2 seeks the tooth position to remove to marking the position from the burring with the work piece, and ejector pad 64 moves and promotes the work piece to the pneumatic marking machine direction distance of 1mm to the spindle nose terminal surface of work piece, and pneumatic marking machine begins to print mark and "O" mark, and after marking the completion, the end processing waits for the manipulator unloading.
Claims (10)
1. The utility model provides a burring is beaten mark and is sought tooth all-in-one for derailleur transmission shaft which characterized in that: the deburring machine comprises a base (1), a stroke mechanism (2), an end face driving mechanism (3), a deburring mechanism (4), a tooth searching mechanism (5) and a marking mechanism (6);
setting the upper end surface of the base (1) as an XY plane, and arranging the stroke mechanism (2), the end surface driving mechanism (3), the deburring mechanism (4), the tooth searching mechanism (5) and the marking mechanism (6) on the upper end surface of the base (1);
the stroke mechanism (2) comprises a stroke driving device (21), a guiding device (22) and a supporting seat (23), the stroke driving device (21) and the guiding device (22) are arranged on the base (1), the output end of the stroke driving device (21) is connected with the supporting seat (23), and the supporting seat (23) is driven to move along the X direction under the guidance of the guiding device (22), so that a processed workpiece is driven to move along the X direction;
the end face driving mechanism (3) comprises an end face driving device (31) and a pneumatic tailstock (32) which are arranged on the base (1) and are used for clamping a workpiece to be processed axially and rotating;
the deburring mechanism (4) comprises a deburring cylinder (41) and a scraper (42), the deburring cylinder (41) is arranged on the base (1), an output shaft of the deburring cylinder is connected with the scraper (42) and used for moving the scraper (42) in the Y-axis direction, and meanwhile, under the thrust action of the deburring cylinder (41), the end face of the scraper (42) is extruded with burrs to perform deburring treatment;
the tooth searching mechanism (5) comprises a proximity switch (51), and the proximity switch (51) is arranged on the base (1) and used for detecting the positions of the tooth top and the tooth bottom to realize the circumferential position detection of a processed workpiece;
the marking mechanism (6) comprises a first pneumatic marking machine (61), a second pneumatic marking machine (62) and a marking positioning unit; the marking positioning unit comprises a marking cylinder (63) and a push block (64), the marking cylinder (63) is arranged on the base (1), and the push block (64) is arranged on an output shaft of the marking cylinder (63) and used for pushing a workpiece to be processed to a marking position; the first pneumatic marking machine (61) is arranged in the Y-axis direction and used for marking a product label on the end face of a machined workpiece, and the second pneumatic marking machine (62) is arranged in the X-axis direction and used for printing O marks on two sides of the tooth groove of the machined workpiece.
2. The deburring, marking and tooth searching all-in-one machine for the transmission shaft according to claim 1, characterized in that: and a scrap collecting box (7) is arranged at the bottom end of the scraper (42) and is used for collecting scraps generated in the deburring process.
3. The deburring, marking and tooth searching all-in-one machine for the transmission shaft according to claim 2, characterized in that: the scrap collecting box (7) is arranged on the base (1) through a scrap box fixing plate and is fixed.
4. The deburring, marking and tooth searching all-in-one machine for transmission shafts according to claim 1, 2 or 3, characterized in that: the printing head of the first pneumatic marking machine (61) and the output shaft of the marking cylinder (63) are arranged coaxially.
5. The deburring, marking and tooth searching all-in-one machine for transmission shafts according to claim 4, characterized in that: the end face driving mechanism (3) and the pneumatic tailstock (32) are arranged coaxially.
6. The deburring, marking and tooth searching all-in-one machine for transmission shafts according to claim 5, characterized in that: the marking cylinder (63) is arranged on the base (1) through the marking cylinder positioning seat (65).
7. The deburring, marking and tooth searching all-in-one machine for transmission shafts according to claim 6, characterized in that: the stroke driving device (21) is a rodless cylinder, and an output sliding block of the rodless cylinder is connected with the supporting seat (23).
8. The deburring, marking and tooth searching all-in-one machine for the transmission shaft according to claim 7, characterized in that: the supporting seat (23) is a V-shaped seat.
9. The deburring, marking and tooth searching all-in-one machine for the transmission shaft according to claim 8, wherein: the end face driving device (31) comprises a motor (311), a speed reducer (312), a coupling and a tip (313), the motor (311) is connected with the coupling through the speed reducer (312), and the coupling is connected with a machined workpiece through the tip (313), so that the machined workpiece is driven to rotate.
10. The deburring, marking and tooth searching all-in-one machine for the transmission shaft according to claim 9, characterized in that: the proximity switch (51) is arranged on the base (1) through a proximity switch seat (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110313768.4A CN113135046B (en) | 2021-03-24 | 2021-03-24 | Deburring, marking and tooth searching integrated machine for transmission shaft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110313768.4A CN113135046B (en) | 2021-03-24 | 2021-03-24 | Deburring, marking and tooth searching integrated machine for transmission shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113135046A true CN113135046A (en) | 2021-07-20 |
| CN113135046B CN113135046B (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110313768.4A Active CN113135046B (en) | 2021-03-24 | 2021-03-24 | Deburring, marking and tooth searching integrated machine for transmission shaft |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201466052U (en) * | 2009-07-06 | 2010-05-12 | 北京清大天达光电科技有限公司 | deburring machine |
| CN201931733U (en) * | 2010-12-09 | 2011-08-17 | 中国大恒(集团)有限公司 | Mechanism realizing multi-side laser marking at one-step installation |
| CN106392331A (en) * | 2016-06-28 | 2017-02-15 | 深圳市艾雷激光科技有限公司 | Double-laser-head and multi-working-station automatic continuous marking machine |
| CN206883015U (en) * | 2017-07-17 | 2018-01-16 | 卢二磊 | A kind of multifunction laser marking machine |
| CN208476176U (en) * | 2018-06-19 | 2019-02-05 | 深圳市领略数控设备有限公司 | One Seed packaged band detects coding common apparatus |
| CN210759856U (en) * | 2019-06-12 | 2020-06-16 | 重庆依斯普激光技术股份有限公司 | Three-axis pneumatic marking machine |
| CN111301001A (en) * | 2020-02-26 | 2020-06-19 | 淮安信息职业技术学院 | Ink jet numbering machine is used in computer production and processing |
| CN111922661A (en) * | 2020-08-11 | 2020-11-13 | 精进百思特电动（上海）有限公司 | Transmission part assembling machine |
| CN212539109U (en) * | 2020-07-09 | 2021-02-12 | 安徽扬山联合精密技术有限公司 | Crankshaft is with detecting mark burring all-in-one |
| CN212726790U (en) * | 2020-09-01 | 2021-03-16 | 苏州山沃机械科技有限公司 | Multifunctional motor rotor processing machine |
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2021
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201466052U (en) * | 2009-07-06 | 2010-05-12 | 北京清大天达光电科技有限公司 | deburring machine |
| CN201931733U (en) * | 2010-12-09 | 2011-08-17 | 中国大恒(集团)有限公司 | Mechanism realizing multi-side laser marking at one-step installation |
| CN106392331A (en) * | 2016-06-28 | 2017-02-15 | 深圳市艾雷激光科技有限公司 | Double-laser-head and multi-working-station automatic continuous marking machine |
| CN206883015U (en) * | 2017-07-17 | 2018-01-16 | 卢二磊 | A kind of multifunction laser marking machine |
| CN208476176U (en) * | 2018-06-19 | 2019-02-05 | 深圳市领略数控设备有限公司 | One Seed packaged band detects coding common apparatus |
| CN210759856U (en) * | 2019-06-12 | 2020-06-16 | 重庆依斯普激光技术股份有限公司 | Three-axis pneumatic marking machine |
| CN111301001A (en) * | 2020-02-26 | 2020-06-19 | 淮安信息职业技术学院 | Ink jet numbering machine is used in computer production and processing |
| CN212539109U (en) * | 2020-07-09 | 2021-02-12 | 安徽扬山联合精密技术有限公司 | Crankshaft is with detecting mark burring all-in-one |
| CN111922661A (en) * | 2020-08-11 | 2020-11-13 | 精进百思特电动（上海）有限公司 | Transmission part assembling machine |
| CN212726790U (en) * | 2020-09-01 | 2021-03-16 | 苏州山沃机械科技有限公司 | Multifunctional motor rotor processing machine |
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| CN113135046B (en) | 2022-06-10 |
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