CN115008223A - Double-spline half shaft milling device - Google Patents
Double-spline half shaft milling device Download PDFInfo
- Publication number
- CN115008223A CN115008223A CN202210675622.9A CN202210675622A CN115008223A CN 115008223 A CN115008223 A CN 115008223A CN 202210675622 A CN202210675622 A CN 202210675622A CN 115008223 A CN115008223 A CN 115008223A
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- Prior art keywords
- half shaft
- milling
- seat
- shaft
- double
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- 238000003801 milling Methods 0.000 title claims abstract description 70
- 230000007246 mechanism Effects 0.000 claims abstract description 72
- 210000000078 claw Anatomy 0.000 claims abstract description 20
- 230000008859 change Effects 0.000 claims abstract description 9
- 230000007306 turnover Effects 0.000 claims description 25
- 238000003754 machining Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 230000002265 prevention Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/28—Electric drives
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention provides a double-spline half shaft milling device, which is used in the technical field of milling processing.A claw disk of a fixing mechanism clamps the side wall of a fixed end of a half shaft during processing, and a tip is propped against the end surface of the processed end of the half shaft, so that the half shaft is positioned; milling the side wall of the processing end of the half shaft by a milling cutter of the milling mechanism to form a spline; after the processing of completion one end, tilting mechanism's upset clamping jaw centre gripping semi-axis, the semi-axis is relaxed in claw dish and top cooperation, and the upset clamping jaw rotates under slewing mechanism's drive, and then drives the semi-axis and rotate, and the both ends of semi-axis change the direction, and the position of processing end and the position of stiff end are changed each other, and claw dish and top cooperation are relocked fixed semi-axis to the other end of processing semi-axis. The double-spline half shaft milling device can automatically change the orientation of the half shaft without manually changing the direction of the half shaft, simplifies the overturning process and improves the efficiency.
Description
Technical Field
The invention relates to the technical field of milling, in particular to a double spline half shaft milling device.
Background
The two ends of the double-spline half shaft are respectively provided with a spline structure, the two ends of the half shaft are required to be respectively processed to form splines during processing, the traditional processing mode is that a workpiece is manually installed on a machine tool, a three-jaw chuck clamps one end of the workpiece, the other end of the workpiece is tightly propped against the top of the workpiece, the half shaft is manually taken down and turned around for installation after one end of the workpiece is milled, and the other end of the workpiece is milled by repeating the same action.
In a traditional processing mode, milling of one half shaft needs to be carried out twice by repeated clamping and positioning, the process of turning the two ends is completed manually, the production efficiency is low, the labor intensity is high, and the product quality is unstable.
For those skilled in the art, how to automatically turn over the half shaft is a technical problem to be solved at present.
Disclosure of Invention
The invention provides a double-spline half shaft milling device which can realize mechanical turnover and complete spline machining at two ends of a half shaft, and the specific scheme is as follows:
a double-spline half shaft milling device comprises a fixing mechanism, a turnover mechanism and a milling mechanism, wherein the fixing mechanism comprises a claw disc and a tip, the claw disc is used for clamping the side wall of the fixed end of a half shaft, and the tip is used for abutting against the end face of the processing end of the half shaft to realize positioning;
the turnover mechanism comprises a turnover clamping jaw, the turnover clamping jaw is used for clamping or loosening the half shaft, and the turnover clamping jaw is driven by the rotating mechanism to rotate so as to drive two ends of the half shaft to change directions;
the milling cutter of the milling mechanism is used for milling the end side wall of the half shaft to form a spline.
Optionally, the device further comprises a knife vibration prevention mechanism, wherein the knife vibration prevention mechanism comprises two floating air cylinders which are oppositely arranged;
the end part of each floating cylinder is provided with a clamping block, and the two clamping blocks are matched with the side wall of the processing end of the clamping half shaft.
Optionally, the clamping block comprises a wheel base and rollers, and the two rollers are hinged to the wheel base side by side.
Optionally, two of the floating cylinders are vertically mounted on the vibrating knife support.
Optionally, the turnover mechanism includes a fixed seat and a movable seat, the movable seat is assembled to the first linear rail of the fixed seat, and the movable seat can translate along a vertical direction relative to the fixed seat.
Optionally, the rotating mechanism is mounted on a second linear rail of the movable seat, and the rotating mechanism can translate along a horizontal direction relative to the movable seat.
Optionally, the semi-axis of placing on the workstation can be got to the end of opening and shutting of upset clamping jaw downwards through cylinder control opening and shutting.
Optionally, the movable seat is driven by a first cylinder to move in the vertical direction, and the rotating mechanism is driven by a second cylinder to move in the horizontal direction.
Optionally, the milling mechanism includes a spindle fixing seat, a spindle sliding seat, a first driving motor, and a second driving motor, the spindle sliding seat is slidably mounted on the spindle fixing seat, and the milling cutter is mounted on the spindle sliding seat;
the first driving motor drives the main shaft sliding seat to move in a translation mode through a lead screw driving belt, and the second driving motor drives the milling cutter to rotate.
The invention provides a double-spline half shaft milling device.A claw disc of a fixing mechanism clamps the side wall of a fixed end of a half shaft during processing, and a tip is propped against the end surface of the processed end of the half shaft, so that the half shaft is positioned; milling the side wall of the processing end of the half shaft by a milling cutter of the milling mechanism to form a spline; after the processing of completion one end, tilting mechanism's upset clamping jaw centre gripping semi-axis, the semi-axis is relaxed in claw dish and top cooperation, and the upset clamping jaw rotates under slewing mechanism's drive, and then drives the semi-axis and rotate, and the both ends of semi-axis change the direction, and the position of processing end and the position of stiff end are changed each other, and claw dish and top cooperation are relocked fixed semi-axis to the other end of processing semi-axis. The double-spline half shaft milling device can automatically change the orientation of the half shaft without changing the direction of the half shaft by manpower, simplifies the turning process and improves the efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an overall block diagram of one embodiment of a dual spline half shaft milling apparatus of the present invention;
FIG. 2 is an elevation view of one embodiment of the dual spline half shaft milling apparatus of the present invention;
FIG. 3 is an isometric view of one embodiment of a canting mechanism;
FIG. 4 is a front view of one embodiment of a canting mechanism;
FIG. 5 is a side view of one embodiment of a canting mechanism;
FIG. 6 is an isometric view of one particular embodiment of a knife vibration prevention mechanism;
FIG. 7 is a front view of one embodiment of a knife vibration prevention mechanism;
FIG. 8 is a side view of one embodiment of a knife protection mechanism;
FIG. 9 is an isometric view of one particular embodiment of a milling mechanism;
FIG. 10 is an elevation view of one embodiment of a milling mechanism.
The figure includes:
the device comprises a fixing mechanism 1, a claw disc 11, a tip 12, a turnover mechanism 2, a turnover clamping jaw 21, a fixed seat 22, a movable seat 23, a rotating mechanism 24, a first air cylinder 25, a second air cylinder 26, a first linear rail 27, a second linear rail 28, a vibration-proof cutter mechanism 3, a floating air cylinder 31, a clamping block 32, a wheel seat 321, a roller 322, a vibration-proof cutter support 33, a milling mechanism 4, a milling cutter 41, a spindle fixed seat 42, a spindle sliding seat 43, a first driving motor 44 and a second driving motor 45.
Detailed Description
The core of the invention is to provide a double-spline half shaft milling device which can realize mechanical turnover and complete spline machining at two ends of a half shaft.
In order to make the technical solution of the present invention better understood by those skilled in the art, the double spline half shaft milling device of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
With reference to fig. 1 and 2, the invention provides a double spline half shaft milling device, which comprises a fixing mechanism 1, a turnover mechanism 2, a milling mechanism 4 and other components, wherein the fixing mechanism 1 comprises a claw disc 11 and a tip 12, the claw disc 11 usually adopts a three-claw or four-claw form, the claw disc 11 is used for clamping the side wall of the fixed end of the half shaft, and the tip 12 is used for being pressed against the end surface of the processing end of the half shaft to realize positioning; as shown in fig. 2, the claw disk 11 is on the left side, the center 12 is on the right side, the left side of the half shaft is fixed to a fixed end by the claw disk 11, and the right side of the half shaft is pressed to a machined end by the center 12. The claw disc 11 and the tip 12 are matched with each other to form a fixing effect on the half shaft, the claw disc 11 clamps one end of the half shaft, and the tip 12 is pressed against the other end of the half shaft.
The turnover mechanism 2 comprises a turnover clamping jaw 21, a rotating mechanism 24 and other structures, wherein the turnover clamping jaw 21 is used for clamping or loosening the half shaft, the turnover clamping jaw 21 is closed to clamp the half shaft, and the turnover clamping jaw 21 is opened to loosen the half shaft; upset clamping jaw 21 is installed in slewing mechanism 24, and upset clamping jaw 21 rotates under slewing mechanism 24's drive, and then drives the both ends of semi-axis and change the direction, also the original processing end of semi-axis is changed for the stiff end, and original stiff end is changed and is the processing end, and at this in-process, 180 degrees rotations are done to the semi-axis.
The milling cutter 41 of the milling mechanism 4 is used for milling the side wall of the processing end of the half shaft to form a spline, after the half shaft is fixed in place, the milling cutter 41 is started to process the processing end of the half shaft, the side wall of the processing end is exposed outside, the milling cutter 41 is fed to complete milling, the claw disc 11 can drive the half shaft to rotate until the circumferential direction is completely milled, and in the process that the claw disc 11 drives the half shaft to rotate, the half shaft is loosened by overturning the clamping jaw 21, and scratches on the surface of the half shaft are avoided. After the spline at one end is machined, the rotating mechanism 24 drives the overturning clamping jaw 21 to change the direction, and the other end is machined again. And after the splines at the two ends are processed, taking down the half shaft.
The double-spline half shaft milling device can automatically change the orientation of the half shaft without manually changing the direction of the half shaft, simplifies the overturning process and improves the automation degree and the processing efficiency.
On the basis of the scheme, with reference to fig. 6, 7 and 8, the double-spline half-shaft milling device further comprises a vibration-proof cutter mechanism 3, wherein the vibration-proof cutter mechanism 3 comprises two floating cylinders 31 which are oppositely arranged, and the two floating cylinders 31 can be matched to extend and retract; the end of each floating cylinder 31 is provided with a clamping block 32, and the two clamping blocks 32 are matched with and clamp the side wall of the machining end of the half shaft.
With reference to fig. 1 and 2, the anti-vibration cutter mechanism 3 of the present invention is located between the turnover mechanism 2 and the milling mechanism 4, the anti-vibration cutter mechanism 3 is close to the milling mechanism 4, and during milling, the two clamping blocks 32 are used for clamping the side wall of the processing end of the half shaft in a matching manner, so as to reduce the vibration amplitude of the half shaft generated by the milling force.
Specifically, the clamping block 32 of the present invention includes a wheel seat 321 and rollers 322, the rollers 322 may be bearings, two rollers 322 are hinged to the wheel seat 321 side by side, there is a gap between the two rollers 322, and the axle shaft can be clamped into the V-shaped groove formed by the two rollers 322, and when the axle shaft is clamped, the axle shaft is clamped by the four rollers 322. The workpiece is clamped in the machining process, the half shaft can jump in the milling process, the floating cylinder 31 stretches and retracts, and the shockproof effect is well achieved.
The two floating cylinders 31 are vertically arranged on the vibration cutter support 33, the vibration cutter support 33 is arranged on the rack and supports the two floating cylinders 31, the floating cylinder 31 above can extend downwards, the floating cylinder 31 below can extend upwards, and the two floating cylinders 31 extend to vertically clamp the half shaft.
Combine fig. 3, fig. 4, fig. 5, tilting mechanism 2 includes fixing base 22 and sliding seat 23, and sliding seat 23 assembles in the first linear rail 27 of fixing base 22, and first linear rail 27 plays the effect of direction to first comparison rail 27, and sliding seat 23 can be for fixing base 22 along vertical direction translation, in order to guarantee the smoothness of removal, need arrange two parallel linear rails at least.
Further, the rotating mechanism 24 of the present invention is assembled to the second wire rail 28 of the movable seat 23, and the second wire rail 28 guides the rotating mechanism 24, so that the rotating mechanism 24 can be translated in the horizontal direction with respect to the movable seat 23. In order to ensure the smoothness of movement, at least two parallel linear rails need to be arranged.
Referring to fig. 5, the open-close end of the turnover clamping jaw 21 of the invention faces downwards, and the open-close is controlled by a cylinder, so that the half shaft placed on the workbench can be clamped. When the half shaft is clamped, the turning clamping jaw 21 is opened and closed and is matched with the lifting of the movable seat 23, after the movable seat 23 descends to the right position, the turning clamping jaw 21 is closed to clamp one half shaft, the movable seat 23 moves upwards to enable the half shaft to be opposite to the jaw disc 11 and the tip 12, and the position of the half shaft is fixed through the matching of the jaw disc 11 and the tip 12.
Specifically, the movable seat 23 of the present invention is driven by the first cylinder 25 to move in the vertical direction, and the rotating mechanism 24 is driven by the second cylinder 26 to move in the horizontal direction. The use of two cylinders to drive translation is one embodiment of the present invention, and other drive configurations may be used, and such embodiments are intended to be within the scope of the present invention.
With reference to fig. 9 and 10, the milling mechanism 4 includes a spindle fixing seat 42, a spindle sliding seat 43, a first driving motor 44, and a second driving motor 45, the spindle sliding seat 43 is slidably mounted on the spindle fixing seat 42, the spindle sliding seat 43 can move vertically, the milling cutter 41 is mounted on the spindle sliding seat 43, and the milling cutter 41 moves synchronously with the spindle sliding seat 43.
The first driving motor 44 drives the spindle sliding seat 43 to move in a translation manner through a screw rod driving belt, and the second driving motor 45 drives the milling cutter 41 to rotate. The first driving motor 44 is installed on the main shaft fixing seat 42, and drives the main shaft sliding seat 43 to move through a screw rod and other structures. The second driving motor 45 is mounted on the main shaft sliding seat 43, and drives the milling cutter 41 to rotate to realize the milling operation.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The double-spline half shaft milling device is characterized by comprising a fixing mechanism (1), a turnover mechanism (2) and a milling mechanism (4), wherein the fixing mechanism (1) comprises a claw disc (11) and a tip (12), the claw disc (11) is used for clamping the side wall of the fixed end of a half shaft, and the tip (12) is used for propping against the end surface of the machining end of the half shaft to realize positioning;
the turnover mechanism (2) comprises a turnover clamping jaw (21), the turnover clamping jaw (21) is used for clamping or loosening the half shaft, and the turnover clamping jaw (21) is driven by a rotating mechanism (24) to rotate so as to drive two ends of the half shaft to change directions;
the milling cutter (41) of the milling mechanism (4) is used for milling the end side wall of the half shaft to form a spline.
2. The double spline half-shaft milling device according to claim 1, further comprising a knife-proof mechanism (3), the knife-proof mechanism (3) comprising two floating cylinders (31) disposed oppositely;
the end part of each floating cylinder (31) is respectively provided with a clamping block (32), and the two clamping blocks (32) are matched with and clamp the side wall of the machining end of the half shaft.
3. The double spline half-shaft milling device according to claim 2, characterized in that the clamping block (32) comprises a wheel seat (321) and rollers (322), two of the rollers (322) being hinged side by side to the wheel seat (321).
4. The double spline half-shaft milling device according to claim 3, wherein the two floating cylinders (31) are vertically mounted to a vibrating knife holder (33).
5. The double splined halfshaft milling device according to claim 1, wherein the tilting mechanism (2) comprises a fixed seat (22) and a movable seat (23), the movable seat (23) being assembled to a first linear rail (27) of the fixed seat (22), the movable seat (23) being able to translate in a vertical direction with respect to the fixed seat (22).
6. The double splined halfshaft milling device according to claim 5, wherein the turning mechanism (24) is fitted to a second linear rail (28) of the mobile seat (23), the turning mechanism (24) being able to translate in a horizontal direction with respect to the mobile seat (23).
7. The double spline half shaft milling device according to claim 6, wherein the open-close end of the turnover clamping jaw (21) faces downwards, and the open-close is controlled by a cylinder to clamp the half shaft placed on the workbench.
8. The double spline half-shaft milling device according to claim 6, characterized in that the movable seat (23) is moved in the vertical direction by a first cylinder (25), and the rotating mechanism (24) is moved in the horizontal direction by a second cylinder (26).
9. The double spline half-shaft milling device according to claim 1, wherein the milling mechanism (4) comprises a main shaft fixing seat (42), a main shaft sliding seat (43), a first driving motor (44) and a second driving motor (45), the main shaft sliding seat (43) is slidably mounted on the main shaft fixing seat (42), and the milling cutter (41) is mounted on the main shaft sliding seat (43);
the first driving motor (44) drives the spindle sliding seat (43) to move in a translation mode through a lead screw driving belt, and the second driving motor (45) drives the milling cutter (41) to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210675622.9A CN115008223A (en) | 2022-06-15 | 2022-06-15 | Double-spline half shaft milling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210675622.9A CN115008223A (en) | 2022-06-15 | 2022-06-15 | Double-spline half shaft milling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115008223A true CN115008223A (en) | 2022-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210675622.9A Pending CN115008223A (en) | 2022-06-15 | 2022-06-15 | Double-spline half shaft milling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115008223A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116079427A (en) * | 2022-12-27 | 2023-05-09 | 南通市紫日机械有限公司 | Spline shaft production line |
| CN118080939A (en) * | 2024-04-19 | 2024-05-28 | 山东重诺锻造股份有限公司 | Device for milling two end faces of flange plate |
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| CN102862239A (en) * | 2012-09-25 | 2013-01-09 | 刘鸿彬 | Rotary floating cutting numerical control machine tool for silicon rod |
| CN206356894U (en) * | 2016-10-13 | 2017-07-28 | 东莞市乔扬数控设备有限公司 | A kind of heavy complex milling machine tool |
| CN107952856A (en) * | 2017-11-23 | 2018-04-24 | 中山市科力高自动化设备有限公司 | A kind of automatic reversing spinning machine |
| CN109290838A (en) * | 2018-11-20 | 2019-02-01 | 陕西海力特精密机械有限公司 | Workpiece turning for automated processing machine tool turns around device |
| CN209062213U (en) * | 2018-09-25 | 2019-07-05 | 青岛三合永昶机械有限公司 | Vertical milling and drilling machine with cleaning mechanism |
| CN212918393U (en) * | 2020-09-01 | 2021-04-09 | 郑州科技学院 | Turning and milling composite numerical control machine tool |
-
2022
- 2022-06-15 CN CN202210675622.9A patent/CN115008223A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102862239A (en) * | 2012-09-25 | 2013-01-09 | 刘鸿彬 | Rotary floating cutting numerical control machine tool for silicon rod |
| CN206356894U (en) * | 2016-10-13 | 2017-07-28 | 东莞市乔扬数控设备有限公司 | A kind of heavy complex milling machine tool |
| CN107952856A (en) * | 2017-11-23 | 2018-04-24 | 中山市科力高自动化设备有限公司 | A kind of automatic reversing spinning machine |
| CN209062213U (en) * | 2018-09-25 | 2019-07-05 | 青岛三合永昶机械有限公司 | Vertical milling and drilling machine with cleaning mechanism |
| CN109290838A (en) * | 2018-11-20 | 2019-02-01 | 陕西海力特精密机械有限公司 | Workpiece turning for automated processing machine tool turns around device |
| CN212918393U (en) * | 2020-09-01 | 2021-04-09 | 郑州科技学院 | Turning and milling composite numerical control machine tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116079427A (en) * | 2022-12-27 | 2023-05-09 | 南通市紫日机械有限公司 | Spline shaft production line |
| CN118080939A (en) * | 2024-04-19 | 2024-05-28 | 山东重诺锻造股份有限公司 | Device for milling two end faces of flange plate |
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