CN211439538U - Quick centering device for grinding inner diameter of planet gear of reduction gearbox of excavator - Google Patents
Quick centering device for grinding inner diameter of planet gear of reduction gearbox of excavator Download PDFInfo
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- CN211439538U CN211439538U CN201922265927.9U CN201922265927U CN211439538U CN 211439538 U CN211439538 U CN 211439538U CN 201922265927 U CN201922265927 U CN 201922265927U CN 211439538 U CN211439538 U CN 211439538U
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- gear
- excavator
- inner diameter
- centering device
- reduction gearbox
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Abstract
The utility model discloses a quick centering device for grinding the inner diameter of a planetary gear of a reduction box of an excavator, which comprises an inner grinding base, a plurality of support columns arranged at equal positions on the circumference of the inner grinding base, a gear arranged on the support columns, and a plurality of clamping jaw assemblies arranged on the outer circumference of the gear; the clamping jaw assembly is detachably provided with a positioning piece clamped between adjacent tooth sockets on the clamping face corresponding to the gear, one part of the positioning piece is abutted to the clamping face, the rest two parts of the positioning piece are abutted to the side faces of the tooth sockets, and the surface of the support column is provided with an airtight hole used for detecting the flat state of the gear. The utility model discloses an accurate positioning gear improves the machining precision.
Description
Technical Field
The utility model belongs to the technical field of gear machining, especially, relate to a quick centring means is ground to excavator reducing gear box planetary gear internal diameter.
Background
When current gear advances line location, adopt the clamping jaw directly to press from both sides the location in its circumference usually, this mode advances line location of gear and can't ensure the state of keeping flat of gear and base, when there is positioning error great in gear and base, influences the precision machining of gear.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problem and providing quick centring means of excavator reducing gear box planetary gear internal diameter grinding to realize accurate positioning gear, improve the machining precision. In order to achieve the above purpose, the utility model discloses technical scheme as follows:
the quick centering device for grinding the inner diameter of the planetary gear of the reduction gearbox of the excavator comprises an inner grinding base, a plurality of supporting columns arranged at equal intervals in the circumferential direction of the inner grinding base, a gear arranged on the supporting columns in a supporting mode, and a plurality of clamping jaw assemblies arranged on the outer circumferential direction of the gear; the clamping jaw assembly is detachably provided with a positioning piece clamped between adjacent tooth sockets on the clamping face corresponding to the gear, one part of the positioning piece is abutted to the clamping face, the rest two parts of the positioning piece are abutted to the side faces of the tooth sockets, and the surface of the support column is provided with an airtight hole used for detecting the flat state of the gear.
Specifically, support columns are vertically connected to trisection positions of the inner grinding base.
Specifically, an airtight hole connected with an airtight detector is formed in the supporting column.
Specifically, the clamping jaw assembly comprises a female jaw and a sub-jaw clamped and embedded at the top of the female jaw.
Specifically, the inner side of the sub-claw corresponds to the tooth surface of the gear, and the inner side of the sub-claw is an arc-shaped clamping surface.
Specifically, a belt rolling hole position is formed in the sub-claw.
Specifically, the positioning piece is bound on the clamping surface of the sub-claw through a rolled belt, and the rolled belt is fixed in a rolled belt hole position.
Specifically, the positioning pieces are pins, and the number of the pins is consistent with that of the sub-claws
Compared with the prior art, the utility model discloses quick centring means is ground to excavator reducing gear box planetary gear internal diameter's beneficial effect mainly embodies:
the matched structure of the sub-claw and the main claw is adopted to realize the quick replacement of the sub-claw and adapt to the processing operation of different workpieces; the inner grinding base is matched with the airtight hole through the support column to detect the flat state of each workpiece machining, so that the positioning stability is ensured; the positioning piece positioning sub-claw clamping surface and the tooth groove side surface position the processing pitch circle diameter of the gear, so that the gear processing precision is greatly improved, and the pitch circle deflection is below 0.02 mm.
Drawings
Fig. 1 is a schematic top view of an embodiment of the present invention;
FIG. 2 is a schematic top view of the inner grinding base of the present embodiment;
FIG. 3 is a schematic sectional front view in the present embodiment;
the figures in the drawings represent:
1, grinding a base, 2 support columns, 21 gears, 22 tooth grooves, 23 tooth surfaces, 3 positioning pieces, 4 airtight holes, 5 female claws, 51 male claws, 52 clamping surfaces and 6 rolled strip hole positions.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments.
Example (b):
referring to fig. 1-3, the present embodiment is a planetary gear inner diameter grinding and fast centering device for a reduction gearbox of an excavator, which includes an inner grinding base 1, a plurality of support pillars 2 disposed at equal intervals on the circumference of the inner grinding base 1, a gear 21 mounted on the support pillars 2, and a plurality of clamping jaw assemblies disposed on the outer circumference of the gear 21; the clamping face of the clamping jaw assembly corresponding to the gear 21 is detachably provided with a positioning piece 3 clamped between the adjacent tooth grooves 22. One position of the positioning piece 3 is abutted against the clamping surface, and the other two positions of the positioning piece 3 are abutted against the side surfaces of the tooth grooves 22. The surface of the supporting column 2 is provided with an airtight hole 4 for detecting the flat state of the gear 21.
The trisection positions of the inner grinding base 1 are respectively and vertically connected with supporting columns 2; the support column 2 is provided with an airtight hole 4 connected with an airtight detector (not shown in the figure). The air tightness detector is an instrument which is conventionally used for detecting the fitting precision of workpieces.
The clamping jaw assembly comprises a female jaw 5 and a sub-jaw 51 clamped and embedded at the top of the female jaw 5; the inner side of the sub-pawl 51 corresponds to the tooth surface 23 of the gear 21, and the inner side of the sub-pawl 51 has an arc-shaped holding surface 52. The sub-claw 51 is internally provided with a rolled strip hole 6.
In this embodiment, the number of the sub-claws 51 is 6, and the clamping surface 52 of each sub-claw 51 is respectively fixed in the rolled strip hole 6 through the rolled strip binding positioning piece 3.
The positioning element 3 in this embodiment is a pin. The number of pins corresponds to the number of sub-pawls 51. The diameter error of the pin is within 0.001 mm.
The inner grinding base 1 is installed in a machine tool, and the flatness of the inner grinding base 1 and the machine tool needs to be less than 0.003 mm.
The air-tight hole 4 detects that the flatness accuracy of the gear is less than or equal to 0.01mm, and is in an unbeveled state when the flatness exceeds 0.001 mm.
After the pin is engaged between the gear 21 and the sub-pawl 51, the inner diameter is waited to be machined with the pitch circle as a positioning reference.
When the embodiment is applied, the auxiliary jaw 51 is quickly replaced by the matching structure of the auxiliary jaw 51 and the main jaw 5, so that the machining operation of different workpieces is adapted; the inner grinding base 1 detects the flat state of each workpiece processing through the support columns 2 in cooperation with the airtight holes 4, and positioning stability is guaranteed; the positioning piece 3 positions the clamping surface 52 of the sub-claw 51 and the side surface of the tooth groove 22, and positions the processing pitch circle diameter of the gear 21, so that the processing precision of the gear 21 is greatly improved, and the pitch circle deflection is below 0.02 mm.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (8)
1. Excavator reducing gear box planetary gear internal diameter grinds quick centring means, its characterized in that: the grinding device comprises an inner grinding base, a plurality of support columns arranged at equal intervals in the circumferential direction of the inner grinding base, a gear arranged on the support columns, and a plurality of clamping jaw assemblies arranged on the outer circumferential direction of the gear; the clamping jaw assembly is detachably provided with a positioning piece clamped between adjacent tooth sockets on the clamping face corresponding to the gear, one part of the positioning piece is abutted to the clamping face, the rest two parts of the positioning piece are abutted to the side faces of the tooth sockets, and the surface of the support column is provided with an airtight hole used for detecting the flat state of the gear.
2. The excavator reduction gearbox planet gear inner diameter grinding rapid centering device of claim 1, characterized in that: and support columns are vertically connected to the trisection positions of the inner grinding base.
3. The excavator reduction gearbox planet gear inner diameter grinding rapid centering device of claim 2, characterized in that: and an airtight hole connected with an airtight detector is arranged in the supporting column.
4. The excavator reduction gearbox planet gear inner diameter grinding rapid centering device of claim 1, characterized in that: the clamping jaw assembly comprises a female jaw and a sub-jaw clamped and embedded at the top of the female jaw.
5. The excavator reduction gearbox planet gear inner diameter grinding rapid centering device of claim 4, characterized in that: the inner side of the sub-claw corresponds to the tooth surface of the gear, and the inner side of the sub-claw is an arc-shaped clamping surface.
6. The excavator reduction gearbox planet gear inner diameter grinding rapid centering device of claim 5, characterized in that: and a belt rolling hole position is formed in the sub-claw.
7. The excavator reduction gearbox planet gear inner diameter grinding rapid centering device of claim 6, characterized in that: and the clamping surfaces of the sub-claws are bound with positioning pieces through a rolled belt, and the rolled belt is fixed in a rolled belt hole position.
8. The excavator reduction gearbox planet gear inner diameter grinding rapid centering device of claim 7, characterized in that: the positioning pieces are pins, and the number of the pins is consistent with that of the sub-claws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922265927.9U CN211439538U (en) | 2019-12-17 | 2019-12-17 | Quick centering device for grinding inner diameter of planet gear of reduction gearbox of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922265927.9U CN211439538U (en) | 2019-12-17 | 2019-12-17 | Quick centering device for grinding inner diameter of planet gear of reduction gearbox of excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211439538U true CN211439538U (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922265927.9U Active CN211439538U (en) | 2019-12-17 | 2019-12-17 | Quick centering device for grinding inner diameter of planet gear of reduction gearbox of excavator |
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|---|---|
| CN (1) | CN211439538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226869A (en) * | 2021-12-21 | 2022-03-25 | 莫显权 | Straight gear grinding device with anti-deviation function |
-
2019
- 2019-12-17 CN CN201922265927.9U patent/CN211439538U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226869A (en) * | 2021-12-21 | 2022-03-25 | 莫显权 | Straight gear grinding device with anti-deviation function |
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| CP01 | Change in the name or title of a patent holder |
Address after: 215000, No. 66 East Jinyang Road, Lu Jia town, Kunshan, Jiangsu, Suzhou Patentee after: Datong gear transmission (Kunshan) Co.,Ltd. Address before: 215000, No. 66 East Jinyang Road, Lu Jia town, Kunshan, Jiangsu, Suzhou Patentee before: DATONG GEAR (KUNSHAN) Co.,Ltd. |