CN113560850A - Press fitting device for double bearings and press fitting system thereof - Google Patents
Press fitting device for double bearings and press fitting system thereof Download PDFInfo
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- CN113560850A CN113560850A CN202110870885.0A CN202110870885A CN113560850A CN 113560850 A CN113560850 A CN 113560850A CN 202110870885 A CN202110870885 A CN 202110870885A CN 113560850 A CN113560850 A CN 113560850A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
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Abstract
The invention belongs to the technical field of bearing installation equipment, and provides a press-fitting device for double bearings and a press-fitting system thereof, which mainly comprise a device frame body, a fixed plate arranged at the bottom of the device frame body, a connecting plate arranged at the top of the device frame body and an installation plate arranged between the fixed plate and the connecting plate; a plurality of guide support rods are arranged between the fixed plate and the connecting plate, and the mounting plate is arranged on the guide support rods in a relatively sliding manner; the mounting plate is provided with mounting positions for mounting parts to be processed, the opposite sides of the parts to be processed are respectively provided with a first bearing mounting position and a second bearing mounting position, the first bearing mounting position and the second bearing mounting position are respectively arranged towards the fixed plate and the connecting plate, the fixed plate is provided with a first bearing mounting piece, and the connecting plate is provided with a second bearing mounting piece in a relatively sliding manner. The invention can effectively improve the mounting efficiency of the bearing at the opposite side of the part.
Description
Technical Field
The invention belongs to the technical field of bearing installation equipment, and particularly relates to a press-fitting device and a press-fitting system for double bearings.
Background
At present, there are more and more parts to be mounted with bearings on opposite sides, and a throttle body is one of them. Conventionally, the installation of the bearings on the opposite side of the throttle body is generally performed by press-fitting the bearing on one side through equipment, then press-fitting the bearing on the other side through the equipment, and respectively press-fitting the bearings on both sides. However, in this way, under the press-in installation of the bearings on the two sides, at least two times of clamping is often required to be performed on the substitute machining part, and the operation is very troublesome; and the clamping of many times also can cause the precision error, when the size requirement difference of the bearing of both sides is great, increases the debugging degree of difficulty to equipment more easily for the installation effectiveness is low.
Disclosure of Invention
In order to overcome the above disadvantages of the prior art, an object of the present invention is to provide a press-fitting device for dual bearings and a press-fitting system thereof, so as to effectively improve the efficiency of mounting a bearing on the opposite side of a component.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a press-fitting device for double bearings comprises a device frame body, a fixed plate arranged at the bottom of the device frame body, a connecting plate arranged at the top of the device frame body and a mounting plate arranged between the fixed plate and the connecting plate; a plurality of guide support rods are arranged between the fixed plate and the connecting plate, and the mounting plate is arranged on the guide support rods in a relatively sliding manner;
the mounting plate is provided with mounting positions for mounting parts to be processed, the opposite sides of the parts to be processed are respectively provided with a first bearing mounting position and a second bearing mounting position, the first bearing mounting position and the second bearing mounting position are respectively arranged towards the fixed plate and the connecting plate, the fixed plate is provided with a first bearing mounting piece, and the connecting plate is provided with a second bearing mounting piece in a relatively sliding manner.
Preferably, a first compression spring is disposed on the guide stay between the mounting plate and the fixing plate.
Preferably, the first bearing pressure mounting part comprises a positioning seat and a sliding sleeve which is arranged on the positioning seat in a relatively sliding manner;
a second compression spring is arranged between the bottom of the sliding sleeve and the bottom of the positioning seat, and an accommodating cavity for mounting a bearing is formed between the inner cavity of the sliding sleeve and the top of the positioning seat;
the positioning seat is detachably arranged on the fixing plate.
Preferably, the second bearing assembly comprises a pressing rod and a first pressing head detachably arranged at the bottom end of the pressing rod;
the top end of the pressure lever is provided with an adjusting piece, and the adjusting piece is in threaded connection with the pressure lever.
Preferably, the guide support rod comprises a guide rod body and a guide cylinder body, and the guide rod body and the guide cylinder body are in sliding sleeve joint with each other.
Preferably, the mounting position comprises a positioning plate, a plurality of first strip-shaped holes are formed in the positioning plate, and the positioning plate is detachably arranged on the mounting plate;
the positioning plate is provided with a positioning surface, the positioning surface is vertically arranged on the mounting plate, and the length direction of the first strip-shaped hole is vertical to the positioning surface;
the positioning surface is provided with a plurality of positioning blocks for mounting parts to be processed, and the positioning blocks are detachably arranged on the positioning plates.
Preferably, the mounting position further comprises a plurality of guide blocks, the guide blocks are detachably arranged on the mounting plate, and the part to be processed is erected between the guide blocks.
Preferably, a toggle mechanism is further arranged on the mounting plate, the toggle mechanism comprises a pressing part, and opposite-side clamping of the part to be processed is formed between the pressing part and the positioning block.
Preferably, the toggle mechanism comprises a mounting rack, a plurality of second strip-shaped holes are arranged on the mounting rack, and the length direction of the second strip-shaped holes is perpendicular to the length direction of the first strip-shaped holes;
the jacking portion comprises a second pressing head and a pressing handle, and the relative position distance between the second pressing head and the pressing handle is adjustable.
A press-fitting system for double bearings comprises the press-fitting device for double bearings, a workbench for mounting a fixing plate and a press-fitting head for pressing a second bearing pressing assembly part;
and a pressure sensor and a pressure gauge are arranged corresponding to the jacking head.
Compared with the prior art, the invention has the beneficial effects that:
in the scheme, the press-fitting device is arranged for the parts needing to be provided with the bearings on the opposite sides, the press-fitting device is provided with the fixing plate, the connecting plate and the mounting plate, when the parts to be machined are arranged on the mounting plate, the first bearing mounting position on the parts to be machined faces the fixing plate, and the second bearing mounting position faces the connecting plate; meanwhile, a first bearing installation part is arranged on the fixing plate, a second bearing installation part is arranged on the connecting plate, the mounting plate is skillfully arranged in a relatively sliding installation mode, so that when the bearing is installed, the bearing is firstly placed on a second bearing installation position and the first bearing installation part respectively, external equipment is driven to enable the second bearing installation part to slide to the second bearing installation position and to be in contact with the bearing, and then the mounting plate is driven to integrally slide to enable the first bearing installation position to move to the first bearing installation part and to be in contact with the bearing, and at the moment, the synchronous embedded installation of the opposite bearings can be realized by continuously keeping force application. The whole operation is simple and convenient, the problems of troublesome operation, precision error and the like caused by secondary clamping in the traditional technology are effectively solved, the installation efficiency of the double-bearing parts is greatly improved, and the popularization and the application are convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention in a state of clamping a component to be processed.
FIG. 2 is a schematic structural view of the present invention when the component to be machined is not clamped.
Fig. 3 is a schematic structural view of the installation site of the present invention.
Fig. 4 is a schematic structural view of the sliding sleeve according to the present invention.
Wherein:
10-device frame body;
1-a fixed plate, 11-a first bearing assembly part, 111-a positioning seat, 112-a sliding sleeve, 113-a second compression spring;
2-connecting plate, 21-second bearing assembly, 211-pressure rod, 212-first pressure head, 213-adjusting part;
3-mounting plate, 31-positioning plate, 311-positioning surface, 312-first strip-shaped hole, 313-positioning block and 32-guide block;
4-a guide support rod, 41-a first compression spring, 42-a guide rod body, 43-a guide cylinder body;
5-parts to be processed;
6-toggle mechanism, 61-mounting frame, 611-second bar hole, 62-second pressure head, 63-pressing handle.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
As shown in fig. 1 to 4, the present embodiment provides a press-fitting device for dual bearings, which mainly includes a device frame body 10, a fixing plate 1 disposed at the bottom of the device frame body 10, a connecting plate 2 disposed at the top of the device frame body 10, and a mounting plate 3 disposed between the fixing plate 1 and the connecting plate 2; a plurality of guide support rods 4 are arranged between the fixed plate 1 and the connecting plate 2, and the mounting plate 3 is arranged on the guide support rods 4 in a relatively sliding manner.
The mounting plate 3 is provided with a mounting position for mounting a part 5 to be processed, opposite sides of the part 5 to be processed are respectively provided with a first bearing mounting position and a second bearing mounting position, when the part 5 to be processed is mounted on the mounting position, the first bearing mounting position is arranged towards the fixing plate 1, and the second bearing mounting position is arranged towards the connecting plate 2; a first bearing mounting part 11 is arranged on the fixed plate 1, a second bearing mounting part 21 is arranged on the connecting plate 2 in a relatively sliding manner, and when bearing pressing operation is carried out, the second bearing mounting part 21 can slide to a second bearing mounting position under the action of external force and drive a part 5 to be processed and the mounting plate 3 to slide to abut against the first bearing mounting part 11; because the mounting plate 3 is arranged in a sliding manner, when the second bearing mounting part 21 drives the mounting plate 3 to slide, the bearing in the second bearing mounting position is not in a stressed state or does not reach a stress threshold value for pressing the bearing into the mounting position; when the whole body slides to abut against the first bearing mounting part 11, the opposite side synchronous stress is formed, the external force is increased, the synchronous press mounting operation of the opposite side bearing can be realized, and the installation of the opposite side bearing can be completed by clamping the part 5 to be processed once.
Preferably, a first compression spring 41 is provided on the guide stay 4 between the mounting plate 3 and the fixing plate 1, and the first compression spring 41 is strung on the guide stay 4. In this embodiment, the two guide support rods 4 are provided to improve the stability of the mounting plate 3 during sliding and ensure the press-fitting quality of the bearing. Further, the guide stay bar 4 comprises a guide bar body 42 and a guide cylinder body 43, and the guide bar body 42 and the guide cylinder body 43 are in sliding sleeve connection with each other.
The first bearing assembly 11 comprises a positioning seat 111 and a sliding sleeve 112 which is arranged on the positioning seat 111 in a relatively sliding manner; a second compression spring 113 is arranged between the bottom of the sliding sleeve 112 and the bottom of the positioning seat 111, and an accommodating cavity for mounting a bearing is formed between the inner cavity of the sliding sleeve 112 and the top of the positioning seat 111. Specifically, the positioning seat 111 includes a circular chassis and a cylinder rod vertically disposed on the chassis, the second compression spring 113 is serially disposed on the cylinder rod, and the cylinder rod can extend into the inner cavity of the sliding sleeve 112 and eject the bearing in the inner cavity of the sliding sleeve 112.
As a preferable scheme, in this embodiment, the length of the first compression spring 41 is greater than that of the second compression spring 113, so that the mounting plate 3 will compress the first compression spring 41 to a certain extent before compressing the second compression spring 113 during sliding, so as to provide a gradual stress process and improve protection for the bearing mounting process.
In addition, the positioning seat 111 is detachably disposed on the fixing plate 1, so as to be replaced and installed according to different parts 5 to be processed.
Further, the second bearing assembly 21 comprises a pressing rod 211, a first pressing head 212 detachably disposed at a bottom end of the pressing rod 211; the top end of the pressing rod 211 is further provided with an adjusting piece 213, and the adjusting piece 213 is in threaded connection with the pressing rod 211. Preferably, the adjusting member 213 in this embodiment may be a bolt, and by adjusting the relative distance between the adjusting member 213 and the pressing rod 211, the stroke adjustment of the device applying the external force can be realized, and the threaded connection is more convenient for fine adjustment of the distance.
The mounting position is mainly formed by a positioning plate 31 and a plurality of guide blocks 32, and both the positioning plate 31 and the guide blocks 32 are detachably arranged on the mounting plate 3.
Be provided with locating surface 311 and a plurality of first bar hole 312 on the locating plate 31, the locating surface 311 is for setting up perpendicularly on the mounting panel 3, the length direction of first bar hole 312 with the locating surface 311 is mutually perpendicular, through adjusting the fastener with the relative position of first bar hole 312, can realize treating the position control of processing spare part 5. The positioning surface 311 is provided with a plurality of positioning blocks 313 for mounting the to-be-machined part 5, the positioning blocks 313 are detachably arranged on the positioning plate 31, and the mounting of various to-be-machined parts 5 can be met by adjusting the application of the positioning blocks 313. The two guide blocks 32 are provided in the embodiment, the part 5 to be machined is partially erected between the two guide blocks 32, and the guide blocks 32 provide an upward supporting force for the part 5 to be machined and prevent the part 5 to be machined from swinging.
Further, in this embodiment, the mounting plate 3 is further provided with a toggle mechanism 6, the toggle mechanism 6 includes a pressing portion, and an opposite-side clamp is formed between the pressing portion and the positioning block 313, so as to clamp and fix the component 5 to be processed in the horizontal direction, and the positioning plate 31 and the guide block 32 are used in cooperation, so that the stability of the component 5 to be processed during bearing press-fitting can be further improved.
Preferably, a mounting bracket 61 is provided corresponding to the toggle mechanism 6, a plurality of second bar holes 611 are provided in the mounting bracket 61, and a longitudinal direction of the second bar holes 611 is perpendicular to a longitudinal direction of the first bar holes 312, so that a pressing position of the pressing portion of the toggle mechanism 6 can be adjusted, and an application range can be expanded. The jacking part comprises a second pressing head 62 and a pressing handle 63, and the relative position distance between the second pressing head 62 and the pressing handle 63 is adjustable; in this embodiment, a screw section is disposed on the second pressing head 62, and the second pressing head 62 is fixedly disposed on the pressing handle 63 through a plurality of nuts; so that the relative distance between the second ram 62 and the positioning surface 311 can be adjusted.
In addition, the present embodiment also provides a press-fitting system for dual bearings, which includes the press-fitting device for dual bearings described above, and further includes a punch (not shown in the figure); the specific structure of the stamping machine can be referred to the prior art, and is not described in detail herein.
Specifically, the punching machine is provided with a workbench for installing the fixing plate 1, a jacking head for jacking the second bearing assembly part 21, and a starting switch and an emergency stop switch for controlling the starting and stopping of the jacking head.
And a pressure sensor and a pressure gauge are arranged corresponding to the jacking head so as to facilitate pressure detection and data recording in the bearing press fitting process. In operation, a bearing is first placed in the accommodating cavity, and the other bearing is pre-installed in a second bearing installation position of the component 5 to be machined according to the process requirements, for example, the pre-installed throttle body is installed on the installation position, and the throttle body is further fixed by screwing the toggle mechanism 6, and at this time, the adjusting member 213 can be adjusted as required. Then the start switch is pressed, the top pressure head of the equipment moves downwards and moves to be in contact with the adjusting piece 213, the initial stroke belongs to the process that the equipment moves the workpiece downwards, at the moment, the mounting plate 3 also moves downwards at the same time, the force is transmitted at the moment, the force is the force of the two first compression springs 41, and at the moment, the pressure gauge starts to work.
When the first bearing mounting position moves to be in contact with the first bearing mounting part 11, the mutual action of press-in force starts at the moment and is transmitted to a pressure sensor of equipment, the pressure gauge can display the current pressure value immediately, meanwhile, the bearings on two sides start to be pressed into the corresponding bearing mounting positions until the bearings move downwards to the position according to the set stroke and stop temporarily, and after the current pressure is recorded, the second section of press-in is carried out, so that the depth of the bearings is ensured to meet the requirement. After the second-stage press-in is completed, the equipment moves upwards, the mounting plate 3 moves upwards under the action force of the first compression spring 41 until the equipment stops, the jacking head of the equipment continues to move upwards until the equipment stops after the original press-in height is reached, at the moment, the toggle mechanism 6 can be opened, the workpiece is taken out, and a processing cycle is completed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. A press fitting device for double bearings is characterized by comprising a device frame body, a fixed plate arranged at the bottom of the device frame body, a connecting plate arranged at the top of the device frame body and a mounting plate arranged between the fixed plate and the connecting plate; a plurality of guide support rods are arranged between the fixed plate and the connecting plate, and the mounting plate is arranged on the guide support rods in a relatively sliding manner;
the mounting plate is provided with mounting positions for mounting parts to be processed, the opposite sides of the parts to be processed are respectively provided with a first bearing mounting position and a second bearing mounting position, the first bearing mounting position and the second bearing mounting position are respectively arranged towards the fixed plate and the connecting plate, the fixed plate is provided with a first bearing mounting piece, and the connecting plate is provided with a second bearing mounting piece in a relatively sliding manner.
2. A press-fitting apparatus for both bearings according to claim 1, wherein a first compression spring is provided on said guide stay between said mounting plate and said fixing plate.
3. A press-fitting device for two bearings according to claim 1 or 2, wherein said first bearing-fitting member comprises a positioning seat, a sliding sleeve relatively slidably disposed on said positioning seat;
a second compression spring is arranged between the bottom of the sliding sleeve and the bottom of the positioning seat, and an accommodating cavity for mounting a bearing is formed between the inner cavity of the sliding sleeve and the top of the positioning seat;
the positioning seat is detachably arranged on the fixing plate.
4. A press-fitting device for dual bearings as claimed in claim 3, wherein said second bearing press-fitting means includes a press rod, a first press head detachably provided at a bottom end of said press rod;
the top end of the pressure lever is provided with an adjusting piece, and the adjusting piece is in threaded connection with the pressure lever.
5. A press-fitting device for double bearings according to claim 1 or 4, wherein the guide support rod comprises a guide rod body and a guide cylinder body, and the guide rod body and the guide cylinder body are slidably sleeved with each other.
6. A press-fitting device for double bearings according to claim 1, wherein the mounting position comprises a positioning plate, a plurality of first strip-shaped holes are formed in the positioning plate, and the positioning plate is detachably arranged on the mounting plate;
the positioning plate is provided with a positioning surface, the positioning surface is vertically arranged on the mounting plate, and the length direction of the first strip-shaped hole is vertical to the positioning surface;
the positioning surface is provided with a plurality of positioning blocks for mounting parts to be processed, and the positioning blocks are detachably arranged on the positioning plates.
7. A press-fitting device for double bearings according to claim 6, wherein said mounting station further comprises a plurality of guide blocks, a plurality of said guide blocks are detachably provided on said mounting plate, and parts to be machined are partially set between said guide blocks.
8. A press-fitting device for double bearings according to claim 6 or 7, wherein a toggle mechanism is further provided on the mounting plate, the toggle mechanism comprises a pressing portion, and a clamping portion is formed between the pressing portion and the positioning block on the opposite side of the component to be machined.
9. A press-fitting device for double bearings according to claim 8, wherein the toggle mechanism comprises a mounting frame, a plurality of second strip-shaped holes are arranged on the mounting frame, and the length direction of the second strip-shaped holes is perpendicular to the length direction of the first strip-shaped holes;
the jacking portion comprises a second pressing head and a pressing handle, and the relative position distance between the second pressing head and the pressing handle is adjustable.
10. A press-fitting system for both bearings, comprising a press-fitting apparatus for both bearings according to any one of claims 1 to 9, further comprising a table on which said fixing plate is mounted and a pressing head for pressing said second bearing fitting member;
and a pressure sensor and a pressure gauge are arranged corresponding to the jacking head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110870885.0A CN113560850A (en) | 2021-07-30 | 2021-07-30 | Press fitting device for double bearings and press fitting system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110870885.0A CN113560850A (en) | 2021-07-30 | 2021-07-30 | Press fitting device for double bearings and press fitting system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113560850A true CN113560850A (en) | 2021-10-29 |
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ID=78169455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110870885.0A Pending CN113560850A (en) | 2021-07-30 | 2021-07-30 | Press fitting device for double bearings and press fitting system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113560850A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1399387A (en) * | 1972-09-09 | 1975-07-02 | Od Z Pressov | Hydraulic press |
| CN201960301U (en) * | 2010-12-28 | 2011-09-07 | 上海英伦帝华汽车部件有限公司 | Fast compactor |
| CN205218449U (en) * | 2015-11-30 | 2016-05-11 | 重庆市力波机械制造有限公司渝鑫机械厂 | A quick pressure equipment tool equipment for gear inner bearing |
| CN208811467U (en) * | 2018-08-27 | 2019-05-03 | 瑞田空压机(苏州)有限公司 | A kind of angular contact bearing and oil seal pressing fixture |
| CN209125255U (en) * | 2018-11-23 | 2019-07-19 | 昆山久茂电子科技有限公司 | A kind of pressing tool of router shell |
| CN110919329A (en) * | 2019-11-27 | 2020-03-27 | 慈溪威力电机制造有限公司 | Bearing press-fitting machine for motor rotor |
| CN211438875U (en) * | 2019-11-27 | 2020-09-08 | 慈溪威力电机制造有限公司 | Bearing press-fitting machine for motor rotor |
| CN211889747U (en) * | 2020-01-20 | 2020-11-10 | 南京汽车集团有限公司 | Combined tool for press mounting of speed reducer assembly component bearing and oil seal |
-
2021
- 2021-07-30 CN CN202110870885.0A patent/CN113560850A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1399387A (en) * | 1972-09-09 | 1975-07-02 | Od Z Pressov | Hydraulic press |
| CN201960301U (en) * | 2010-12-28 | 2011-09-07 | 上海英伦帝华汽车部件有限公司 | Fast compactor |
| CN205218449U (en) * | 2015-11-30 | 2016-05-11 | 重庆市力波机械制造有限公司渝鑫机械厂 | A quick pressure equipment tool equipment for gear inner bearing |
| CN208811467U (en) * | 2018-08-27 | 2019-05-03 | 瑞田空压机(苏州)有限公司 | A kind of angular contact bearing and oil seal pressing fixture |
| CN209125255U (en) * | 2018-11-23 | 2019-07-19 | 昆山久茂电子科技有限公司 | A kind of pressing tool of router shell |
| CN110919329A (en) * | 2019-11-27 | 2020-03-27 | 慈溪威力电机制造有限公司 | Bearing press-fitting machine for motor rotor |
| CN211438875U (en) * | 2019-11-27 | 2020-09-08 | 慈溪威力电机制造有限公司 | Bearing press-fitting machine for motor rotor |
| CN211889747U (en) * | 2020-01-20 | 2020-11-10 | 南京汽车集团有限公司 | Combined tool for press mounting of speed reducer assembly component bearing and oil seal |
Non-Patent Citations (1)
| Title |
|---|
| 技工学校机械类通用教材编审委员会编: "《冷作工艺学 第2版》", 30 June 1987 * |
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Application publication date: 20211029 |
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