CN110328512B - Bearing outer ring press-fitting and locking mechanism of transmission shell - Google Patents
Bearing outer ring press-fitting and locking mechanism of transmission shell Download PDFInfo
- Publication number
- CN110328512B CN110328512B CN201910698921.2A CN201910698921A CN110328512B CN 110328512 B CN110328512 B CN 110328512B CN 201910698921 A CN201910698921 A CN 201910698921A CN 110328512 B CN110328512 B CN 110328512B
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- Prior art keywords
- sliding sleeve
- pressure head
- clamping
- strip
- outer ring
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 27
- 238000003825 pressing Methods 0.000 claims abstract description 18
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012797 qualification Methods 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- 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
- B23P19/027—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 using hydraulic or pneumatic means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
- Automatic Assembly (AREA)
Abstract
The invention relates to a processing device for a transmission shell, in particular to a locking mechanism for press-fitting an outer ring of a bearing of the transmission shell. The device comprises a compression bar, wherein the outer diameter of the upper part of the compression bar is larger than the outer diameters of other parts, so that a step is formed on the compression bar. The lower end of the compression bar is provided with a pressure head. The upper end of the sliding sleeve is provided with an annular flanging which is bent inwards, the annular flanging is positioned above the pressing head, and a return spring is sleeved on the section of the pressing rod between the annular flanging and the pressing rod step. The outer diameter of the lower end of the ram is smaller than the outer diameter of other positions, thereby forming a step on the lower end of the ram. The sliding sleeve is characterized in that strip-shaped through grooves are uniformly distributed on the lower portion of the sliding sleeve along the circumferential direction of the sliding sleeve, clamping strips are arranged in the strip-shaped through grooves, the middle parts of the clamping strips are hinged in the strip-shaped through grooves, stop blocks are fixed on the outer walls of the sliding sleeves corresponding to the upper ends of the clamping strips, and clamping springs are arranged between the upper ends of the clamping strips and the sliding sleeve. The mechanism has higher production efficiency, higher qualification rate of the gearbox and longer service life of the pressure head.
Description
Technical Field
The invention relates to a processing device for a transmission shell, in particular to a press-fitting locking mechanism for a bearing outer ring of the transmission shell, which presses the bearing outer ring into the transmission shell.
Background
A transmission is a set of transmission devices for coordinating engine speed with actual running speed of wheels, and is used for exerting the best performance of an engine. The speed changer is provided with a shell, and the bearing outer ring is pressed into the speed changer shell through a bearing outer ring pressing mechanism.
Currently, a transmission housing bearing outer ring press-fitting mechanism used in industry comprises a press rod vertically arranged, wherein the outer diameter of the upper part of the press rod is larger than the outer diameters of other parts, so that a step is formed on the press rod. The lower end of the pressure rod is concentrically fixed with a columnar pressure head, and the outer diameter of the pressure head is larger than that of the lower end of the pressure rod. The pressure head is sleeved with a sliding sleeve, the sliding sleeve is matched with the pressure head in a sliding mode along the axial direction of the pressure head, the upper end of the sliding sleeve is provided with an inwards bent annular flanging, the annular flanging is positioned above the pressure head, the inner diameter of the annular flanging is smaller than the outer diameter of the pressure head, and a reset spring is sleeved on the section of pressure rod between the annular flanging and the pressure rod step. The outer diameter of the end of the ram remote from the plunger is smaller than the outer diameter of the other locations, thereby forming a step on the end of the ram. Blind holes are uniformly distributed on the steps of the pressure head along the circumferential direction of the steps, and powerful magnets are arranged in the blind holes. When in use, the upper end of the compression bar is connected with the oil cylinder of the hydraulic machine. When the hydraulic machine works, the gearbox housing is firstly placed on a workbench of the hydraulic machine. Then, the bearing outer ring is sleeved on the lower end of the pressure head, one end of the bearing outer ring is propped against the step of the pressure head, and the powerful magnet adsorbs and fixes the bearing outer ring on the pressure head. Then, the hydraulic press is started, the oil cylinder of the hydraulic press drives the pressing rod to quickly descend, when the pressing head enters the bearing outer ring hole of the transmission shell, the oil cylinder drives the pressing rod to slowly descend, the sliding sleeve is pushed upwards by the transmission shell, and the bearing outer ring is pressed into the transmission shell. Finally, the oil cylinder of the hydraulic machine drives the compression bar to reset, and the movable sleeve resets under the action of the reset spring. The pressing mechanism is characterized in that the bearing outer ring is adsorbed and fixed by the strong magnet, when the compression bar is changed from fast descending to slow descending, the bearing outer ring is easy to fall off due to inertia, the production efficiency is reduced, the strength of the strong magnet is lower, the bearing outer ring is easy to break to cause fixed failure, the bearing outer ring is easy to fall off, and the production efficiency is further reduced. Meanwhile, iron filings are adsorbed on the powerful magnet in the use process and enter the gearbox shell along with the pressure head, so that the qualification rate of the gearbox is reduced. In addition, the effective contact area of the pressure head and the bearing inner ring is reduced due to the installation of the powerful magnet, the pressure head is easy to deform, and the service life is short.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the press-fitting locking mechanism for the outer ring of the bearing of the transmission shell, the production efficiency of the mechanism is higher, the qualification rate of the transmission is higher, and the service life of the pressure head is longer.
In order to solve the problems, the following technical scheme is provided:
the pressing and locking mechanism for the outer ring of the bearing of the transmission shell comprises a pressing rod which is vertically arranged, wherein the outer diameter of the upper part of the pressing rod is larger than that of other parts, so that steps are formed on the pressing rod. The lower end of the pressure rod is concentrically fixed with a columnar pressure head, and the outer diameter of the pressure head is larger than that of the lower end of the pressure rod. The pressure head is sleeved with a sliding sleeve, the sliding sleeve is matched with the pressure head in a sliding mode along the axial direction of the pressure head, the upper end of the sliding sleeve is provided with an inwards bent annular flanging, the annular flanging is positioned above the pressure head, the inner diameter of the annular flanging is smaller than the outer diameter of the lower part of the pressure head, and a reset spring is sleeved on the section of pressure rod between the annular flanging and the pressure rod step. The outer diameter of the lower end of the pressure head is smaller than that of other positions, so that a step is formed on the lower end of the pressure head. The sliding sleeve is characterized in that strip-shaped through grooves are uniformly distributed on the lower portion of the sliding sleeve along the circumferential direction of the sliding sleeve, the strip-shaped through grooves are all arranged along the axial direction of the sliding sleeve, clamping strips are all arranged in the strip-shaped through grooves, the middle parts of the clamping strips are hinged in the strip-shaped through grooves, stop blocks are all fixed on the outer walls of the sliding sleeves corresponding to the upper ends of the clamping strips, the lower portions of the stop blocks are spaced from the sliding sleeves, the upper ends of the clamping strips are located between the lower portions of the stop blocks and the sliding sleeves, clamping springs are arranged between the upper ends of the clamping strips and the sliding sleeves, and the lower ends of the clamping strips are located outside the lower ends of the pressing heads.
The clamping spring is positioned between the pit bottom of the pit and the sliding sleeve.
The anti-rotation pin is arranged on the outer side wall of the pressure head and extends outwards in the radial direction, the anti-rotation pin is provided with a yielding through groove on the side wall of the sliding sleeve corresponding to the anti-rotation pin, one end of the anti-rotation pin is positioned in the yielding through groove, and one end of the yielding through groove is positioned on the lower end face of the sliding sleeve, so that one end of the yielding through groove is in an open shape.
The lower part of the stop block corresponding to the clamping spring is provided with a horizontal threaded hole, an adjusting screw is connected in the horizontal threaded hole in a threaded manner, and one end of the adjusting screw abuts against the outer side wall of the upper end of the clamping strip.
By adopting the scheme, the method has the following advantages:
as the lower part of the sliding sleeve of the transmission shell bearing outer ring press-fitting locking mechanism is uniformly provided with the strip-shaped through grooves along the circumferential direction, the strip-shaped through grooves are respectively internally provided with the clamping strips, the middle parts of the clamping strips are hinged in the strip-shaped through grooves, the outer walls of the sliding sleeves corresponding to the upper ends of the clamping strips are respectively fixedly provided with a stop block, the upper ends of the clamping strips are positioned between the lower parts of the stop blocks and the sliding sleeve, the upper ends of the clamping strips and the sliding sleeve are provided with the clamping springs, and the lower ends of the clamping strips are positioned outside the lower ends of the pressing heads. The press-fitting locking mechanism utilizes the clamping spring to push the clamping strip to lock and fix the bearing outer ring around, the fixing firmness is good, the bearing outer ring cannot fall off due to inertia, the strength of the clamping strip is high, the clamping strip cannot be damaged, and therefore the working efficiency of press-fitting can be greatly improved. Meanwhile, scrap iron cannot be carried by locking fixation, so that the qualification rate of the gearbox is higher. In addition, when in press fitting, the bearing outer ring is in contact with the step surface of the whole pressure head, the effective contact area is large, the pressure head is not easy to deform, and the service life of the pressure head is greatly prolonged.
Drawings
FIG. 1 is a schematic illustration of a transmission housing bearing outer race press-fit locking mechanism of the present invention;
Fig. 2 is a schematic perspective view of a press-fit locking mechanism for an outer race of a transmission housing bearing according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the bearing outer ring press-fitting and locking mechanism of the transmission housing of the present invention includes a vertically arranged pressing rod 1, and the outer diameter of the upper portion of the pressing rod 1 is larger than the outer diameters of other portions, so that a step is formed on the pressing rod 1. The lower end of the compression bar 1 is concentrically fixed with a columnar pressure head 9, and the outer diameter of the pressure head 9 is larger than that of the lower end of the compression bar 1. The pressure head 9 is sleeved with a sliding sleeve 12, the sliding sleeve 12 is matched with the pressure head 9 in a sliding mode along the axial direction of the pressure head 9, the upper end of the sliding sleeve 12 is provided with an inwards bent annular flange 3, the annular flange 3 is positioned above the pressure head 9, the inner diameter of the annular flange 3 is smaller than the outer diameter of the lower portion of the pressure head 9, and a return spring 2 is sleeved on the section of pressure rod 1 between the annular flange 3 and the step of the pressure rod 1. The outer diameter of the lower end of the ram 9 is smaller than that of other positions, so that a step is formed on the lower end of the ram 9. The lower part of sliding sleeve 12 has the bar logical groove along its circumference equipartition, and the bar leads to the groove and all arranges along the axial of sliding sleeve 12, and the bar leads to the inslot and all has clamping strip 8, and the middle part of clamping strip 8 articulates in the bar leads to the groove, all is fixed with dog 4 on the sliding sleeve 12 outer wall that clamping strip 8 upper end corresponds, has the interval between the lower part of dog 4 and sliding sleeve 12, and clamping strip 8 upper end is located between lower part and the sliding sleeve 12 of dog 4, and has clamping spring 5 between clamping strip 8's upper end and the sliding sleeve 12, and clamping strip 8 lower extreme is located the pressure head 9 lower extreme outside. The inner side wall of the upper end of the clamping strip 8 is provided with a pit 7, and the clamping spring 5 is positioned between the pit bottom of the pit 7 and the sliding sleeve 12. The lower part of the stop block 4 corresponding to the clamping spring 5 is provided with a horizontal threaded hole, an adjusting screw 6 is connected in the horizontal threaded hole in a threaded manner, and one end of the adjusting screw 6 abuts against the outer side wall of the upper end of the clamping strip 8. The outer side wall of the pressure head 9 is provided with an anti-rotation pin 11 extending outwards in the radial direction, the side wall of a sliding sleeve 12 corresponding to the anti-rotation pin 11 is provided with a yielding through groove 10, one end of the anti-rotation pin 11 is positioned in the yielding through groove 10, and one end of the yielding through groove 10 is positioned on the lower end face of the sliding sleeve 12, so that one end of the yielding through groove 10 is in an open shape.
When in use, the upper end of the compression bar 1 is connected with an oil cylinder of the hydraulic machine. The extent of compression of the clamping spring 5 and thus the clamping force of the clamping bar 8 can be adjusted by means of the adjusting screw 6. When the hydraulic machine works, the gearbox housing is firstly placed on a workbench of the hydraulic machine. Then, the bearing outer ring 13 is sleeved on the lower end of the pressure head 9, one end of the bearing outer ring 13 is propped against the step of the pressure head 9, and the lower end of the clamping strip 8 clamps and fixes the bearing outer ring 13 between the sliding sleeve 12 and the pressure head 9 under the action of the clamping spring 5. Then, the hydraulic press is started, the oil cylinder of the hydraulic press drives the compression bar 1 to quickly descend, when the pressure head 9 enters the bearing outer ring hole of the transmission shell, the oil cylinder drives the compression bar 1 to slowly descend, the sliding sleeve 12 and the clamping strip 8 are pushed upwards by the transmission shell to leave the bearing outer ring, and the bearing outer ring 13 is pressed into the transmission shell. Finally, the oil cylinder of the hydraulic machine drives the compression bar 1 to reset, and the movable sleeve and the clamping bar 8 are reset under the action of the reset spring 2.
Claims (4)
1. The transmission shell bearing outer ring press-fitting locking mechanism comprises a vertically arranged compression bar (1), wherein the outer diameter of the upper part of the compression bar (1) is larger than the outer diameters of other parts, so that steps are formed on the compression bar (1); the lower end of the pressure rod (1) is concentrically fixed with a columnar pressure head (9), and the outer diameter of the pressure head (9) is larger than that of the lower end of the pressure rod (1); the pressure head (9) is sleeved with a sliding sleeve (12), the sliding sleeve (12) is matched with the pressure head (9) in a sliding manner along the axial direction of the pressure head (9), the upper end of the sliding sleeve (12) is provided with an inwards bent annular flanging (3), the annular flanging (3) is positioned above the pressure head (9), the inner diameter of the annular flanging (3) is smaller than the outer diameter of the lower part of the pressure head (9), and a return spring (2) is sleeved on the section of pressure rod (1) between the annular flanging (3) and the step of the pressure rod (1); the outer diameter of the lower end of the pressure head (9) is smaller than that of other positions, so that a step is formed on the lower end of the pressure head (9); the sliding sleeve is characterized in that strip-shaped through grooves are uniformly distributed on the lower portion of the sliding sleeve (12) along the circumferential direction of the sliding sleeve, the strip-shaped through grooves are all arranged along the axial direction of the sliding sleeve (12), clamping strips (8) are all arranged in the strip-shaped through grooves, the middle portions of the clamping strips (8) are hinged in the strip-shaped through grooves, stop blocks (4) are all fixed on the outer walls of the sliding sleeve (12) corresponding to the upper ends of the clamping strips (8), a gap is reserved between the lower portions of the stop blocks (4) and the sliding sleeve (12), the upper ends of the clamping strips (8) are located between the lower portions of the stop blocks (4) and the sliding sleeve (12), and clamping springs (5) are arranged between the upper ends of the clamping strips (8) and the sliding sleeve (12), and the lower ends of the clamping strips (8) are located outside the lower ends of the pressing heads (9).
2. The transmission housing bearing outer ring press-fit locking mechanism according to claim 1, wherein the inner side wall of the upper end of the clamping strip (8) is provided with a pit (7), and the clamping spring (5) is positioned between the pit bottom of the pit (7) and the sliding sleeve (12).
3. The transmission housing bearing outer ring press-fit locking mechanism according to claim 1, characterized in that an anti-rotation pin (11) extending outwards in the radial direction is arranged on the outer side wall of the pressure head (9), a yielding through groove (10) is arranged on the side wall of a sliding sleeve (12) corresponding to the anti-rotation pin (11), one end of the anti-rotation pin (11) is positioned in the yielding through groove (10), and the lower end of the yielding through groove (10) extends to the lower end face of the sliding sleeve (12) and is in an open shape.
4. A transmission housing bearing outer ring press-fitting locking mechanism according to any one of claims 1-3, characterized in that a horizontal threaded hole is formed in the lower portion of a stop block (4) corresponding to the clamping spring (5), an adjusting screw (6) is connected in the horizontal threaded hole in a threaded manner, and one end of the adjusting screw (6) abuts against the outer side wall of the upper end of the clamping strip (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910698921.2A CN110328512B (en) | 2019-07-31 | 2019-07-31 | Bearing outer ring press-fitting and locking mechanism of transmission shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910698921.2A CN110328512B (en) | 2019-07-31 | 2019-07-31 | Bearing outer ring press-fitting and locking mechanism of transmission shell |
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| Publication Number | Publication Date |
|---|---|
| CN110328512A CN110328512A (en) | 2019-10-15 |
| CN110328512B true CN110328512B (en) | 2024-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910698921.2A Active CN110328512B (en) | 2019-07-31 | 2019-07-31 | Bearing outer ring press-fitting and locking mechanism of transmission shell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111168351A (en) * | 2020-03-11 | 2020-05-19 | 广西玉柴机器股份有限公司 | Valve stem oil seal press-fitting equipment |
| CN111687782B (en) * | 2020-06-29 | 2024-02-27 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Tapered roller bearing outer ring centering press-in tool for steering gear |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210281306U (en) * | 2019-07-31 | 2020-04-10 | 无锡蓝力智能装备有限公司 | Transmission housing bearing outer ring press fitting locking mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103394892B (en) * | 2013-07-02 | 2015-10-28 | 广西玉柴机器股份有限公司 | Auxiliary mould separated by pump shaft and bearing |
| KR101682562B1 (en) * | 2015-10-01 | 2016-12-06 | 주식회사 범서 | Bearing inserting machine of automatic self-aligning type |
| KR101758780B1 (en) * | 2016-05-27 | 2017-07-17 | 한국철도공사 | a Disassembly tool for a tain of motor reducer |
| CN208019744U (en) * | 2017-12-30 | 2018-10-30 | 无锡蓝力智能装备有限公司 | Automobile gearbox assembly line positioning pin press-loading device |
| CN108526854A (en) * | 2018-05-19 | 2018-09-14 | 柳州上汽汽车变速器有限公司 | Differential bearing pressure head device |
| CN109623337B (en) * | 2019-01-22 | 2020-11-06 | 马鞍山市粤美金属制品科技实业有限公司 | Compressor bearing clamping device convenient to adjust and clamping method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210281306U (en) * | 2019-07-31 | 2020-04-10 | 无锡蓝力智能装备有限公司 | Transmission housing bearing outer ring press fitting locking mechanism |
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