CN203901026U - Device for grinding outer circle of oil piston of screw rod compressor - Google Patents
Device for grinding outer circle of oil piston of screw rod compressor Download PDFInfo
- Publication number
- CN203901026U CN203901026U CN201420175686.3U CN201420175686U CN203901026U CN 203901026 U CN203901026 U CN 203901026U CN 201420175686 U CN201420175686 U CN 201420175686U CN 203901026 U CN203901026 U CN 203901026U
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- grinding
- latch
- rotating disc
- piston
- machine oil
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Abstract
The utility model provides a device for grinding the outer circle of the oil piston of a screw rod compressor. The device comprises a workbench, a grinding component and an electric control box, wherein the grinding component is arranged on the workbench; the electric control box is electrically connected with the grinding component; the grinding component comprises a grinding sleeve; the oil piston is arranged in the grinding sleeve on the grinding component to be ground. The device for grinding the outer circle of the oil piston of the screw rod compressor is simple and reasonable in structural design; the outer circle of the oil piston is ground through the grinding sleeve of the grinding component, so that the consistency of the size of the outer circle of the oil piston is guaranteed, potential quality hazard caused by unstable manual operation force can be avoided, and the product quality is guaranteed.
Description
Technical field
The utility model relates to mechanical equipment technical field, particularly relates to a kind of screw compression machine oil outside piston grinding attachment.
Background technology
At present, oily piston seal assembly is generally installed on helical-lobe compressor, but because oily piston seal assembly excircle dimension is lack of standardization, actual excircle dimension is bigger than normal than theoretical size, before using ninety-nine times out of a hundred, all need the excircle dimension of artificial break-in oil piston, cause inefficiency, labour intensity is large, and workpiece quality is unstable.Due to each side, all there is no the rapid stock-removal device of a convenience, practicality always.
In view of above-mentioned defect, the inventor has obtained the invention finally through long research and practice.
Utility model content
Based on this, while being necessary for oily outside piston size grinding on helical-lobe compressor, the problem such as inefficiency, provides one to increase work efficiency, and can ensure the conforming screw compression machine oil of oily outside piston outside piston grinding attachment.Above-mentioned purpose is achieved through the following technical solutions:
A kind of screw compression machine oil outside piston grinding attachment, comprise workbench, grinding subassembly and electric cabinet, described grinding subassembly is installed on described workbench, described electric cabinet is electrically connected with described grinding subassembly, described grinding subassembly comprises grinding cover, and oily piston is installed in the grinding cover on described grinding subassembly and carries out grinding.
Above-mentioned purpose can also further realize by following technical proposals.
Wherein, described grinding subassembly also comprises column, rotating disc, bearing, hush panel, rear stub and cylinder, one end of described column is installed on described workbench, the other end is provided with described hush panel, described hush panel is connected with described cylinder by described rear stub, described rotating disc is installed on described column one end near described workbench by described bearing, and there is predeterminable range between described rotating disc and described workbench, described grinding cover is installed on described rotating disc, the output shaft of described cylinder is connected with oily piston, drive oily piston move up and down and rotate in described grinding cover.
Wherein, the quantity of described grinding cover is multiple, and described grinding cover is evenly distributed on described rotating disc, described grinding cover is provided with ladder endoporus, the internal diameter of the ladder endoporus of each described grinding cover diminishes gradually from the end to end away from described rotating disc, and the internal diameter of the ladder endoporus of multiple described grinding covers is each unequal.
Wherein, described grinding subassembly also comprises multidiameter, and one end of described multidiameter is connected with described cylinder, and the other end is connected with oily piston, and described cylinder moving, by described multidiameter transmission, drives oily piston movement.
Wherein, described grinding subassembly also comprises inner spacing collar and outer separator, the quantity of described bearing is two, described inner spacing collar and outer separator are arranged between two described bearings, shape, the size of described inner spacing collar are consistent with shape, the size of the inner ring of described bearing, and shape, the size of described outer separator are consistent with shape, the size of the outer ring of described bearing.
Wherein, described screw compression machine oil outside piston grinding attachment also comprises indexing positioning device, and described indexing positioning device is installed on described workbench, and described rotating disc is fixed.
Wherein, described indexing positioning device comprises locating piece, latch support plate, spring, pin bushing, latch and latch handle, described locating piece is installed on described rotating disc, described latch support plate is installed on described workbench, described spring fitting is in described pin bushing, described pin bushing is installed on described latch support plate, one end of described latch is connected with described latch handle with described pin bushing through described spring successively, the other end of described latch coordinates with described locating piece through described latch support plate, described latch handle moves back and forth and drives described latch to move back and forth, on described latch, be provided with the shaft shoulder, the external diameter of the described shaft shoulder is greater than the external diameter of described spring.
Wherein, described latch handle moves to a direction, drives described latch motion, compresses described spring by the shaft shoulder on described latch, and described latch departs from described locating piece, and described rotating disc can rotate; Described latch handle is to the motion of another direction, the described spring state that affranchises, and described latch coordinates with described locating piece away from one end of described latch handle, and described rotating disc can not rotate.
Wherein, the quantity of described locating piece is multiple, and multiple described locating pieces are evenly distributed on the marginal position of described rotating disc, by coordinating of described latch and described locating piece, controls described grinding cover corresponding with the oily piston position of corresponding size.
Wherein, described screw compression machine oil outside piston grinding attachment also comprises bracing frame and safety device, and described workbench is installed on support frame as described above, and described safety device is installed on support frame as described above.
The beneficial effects of the utility model are:
Screw compression machine oil outside piston grinding attachment of the present utility model, structural design advantages of simple, grinding cover by grinding subassembly carries out grinding to oily outside piston, ensure the uniformity of oily outside piston size, and can eliminate the unstable hidden danger of quality bringing of manual operation dynamics, ensure product quality.Screw compression machine oil outside piston grinding attachment of the present utility model is simple, convenient simultaneously, has reduced labour intensity, has improved operating efficiency, lower to operating personnel's requirement, and this plant automation degree is high, and production capacity is large, and versatility is high.
Brief description of the drawings
Fig. 1 is the stereogram that screw compression machine oil outside piston grinding attachment of the present utility model one embodiment is equipped with oily piston;
Fig. 2 is the cutaway view of grinding subassembly in the screw compression machine oil outside piston grinding attachment shown in Fig. 1;
Fig. 3 is the top view of the grinding subassembly shown in Fig. 2;
Fig. 4 is the stereogram that the grinding subassembly shown in Fig. 2 is equipped with oily piston;
Fig. 5 is the cutaway view that the grinding subassembly shown in Fig. 4 is equipped with oily piston;
Fig. 6 is the stereogram of indexing positioning device in the screw compression machine oil outside piston grinding attachment shown in Fig. 2;
Fig. 7 is the cutaway view of the indexing positioning device shown in Fig. 6;
Fig. 8 is the front view of the indexing positioning device shown in Fig. 7;
Fig. 9 is the operating process schematic diagram of the utility model screw compression machine oil outside piston grinding attachment;
Wherein:
100-grinding subassembly;
111-column; 112-rotating disc; 113-bearing; 114-connecting plate; 115-hush panel; 116-rear stub; 117-cylinder; 118-grinding cover; 119-universal joint; 120-cylinder connector; 121-adapter sleeve; 122-multidiameter; 123-inner spacing collar; 124-outer separator; 125-base; The outer transparent cover of 126-; Transparent cover in 127-; The outer back-up ring of 128-;
200-indexing positioning device;
211-locating piece; 212-latch support plate; 213-spring; 214-pin bushing; 215-latch; 216-latch handle;
300-oil piston;
400-electric cabinet;
500-bracing frame;
600-protective cover;
700-safe grating;
800-siren.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below by specific embodiment, and by reference to the accompanying drawings, screw compression machine oil outside piston grinding attachment of the present utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Referring to Fig. 1 to Fig. 8, screw compression machine oil outside piston grinding attachment of the present utility model, comprise workbench, grinding subassembly 100 and electric cabinet 400, grinding subassembly 100 is installed on workbench, electric cabinet 400 is electrically connected with grinding subassembly 100, control grinding subassembly 100 and move, grinding subassembly 100 comprises grinding cover 118, and oily piston 300 is installed in the grinding cover 118 on grinding subassembly 100 and carries out grinding.
Oil piston 300 is installed on grinding subassembly 100, is electrically connected with electric cabinet 400 by grinding subassembly 100, controls grinding subassembly 100 cylindrical of oily piston 300 is carried out to grinding.
Screw compression machine oil outside piston grinding attachment of the present utility model, 118 pairs of oily piston 300 cylindricals of grinding cover by grinding subassembly 100 carry out grinding, ensure the uniformity of oily piston 300 excircle dimensions, and can eliminate the unstable hidden danger of quality bringing of manual operation dynamics, ensure product quality.Screw compression machine oil outside piston grinding attachment of the present utility model is simple, convenient simultaneously, has reduced labour intensity, has improved operating efficiency, lower to operating personnel's requirement, and this plant automation degree is high, and production capacity is large, and versatility is high.
As a kind of embodiment, grinding subassembly 100 also comprises column 111, rotating disc 112, bearing 113, hush panel 115, rear stub 116 and cylinder 117, and one end of column 111 is installed on workbench, other end assembly sealing plate 115.
Hush panel 115 is connected with cylinder 117 by rear stub 116, rotating disc 112 is installed on column 111 one end near workbench by bearing 113, and there is predeterminable range between rotating disc 112 and workbench, grinding cover 118 is installed on rotating disc 112, the output shaft of cylinder 117 is connected with oily piston 300, drives oily piston 300 move up and down and rotate in grinding cover 118.
Grinding subassembly 100 also comprises connecting plate 114, and connecting plate 114 is installed between column 111 and hush panel 115, connects column 111 and hush panel 115 by connecting plate 114.Between rotating disc 112 and workbench, there is predeterminable range, ensure that rotating disc 112 can not scratch workbench in rotation process, affect operating efficiency.
Between grinding cover 118 and rotating disc 112, between connecting plate 114 and hush panel 115, between hush panel 115 and rear stub 116, be threaded connection respectively part and be connected, and in the present embodiment, bearing 113 is deep groove ball bearing.
As a kind of embodiment, the quantity of grinding cover 118 is multiple, and grinding cover 118 is evenly distributed on rotating disc 112, grinding cover 118 is provided with ladder endoporus, the internal diameter of the ladder endoporus of each grinding cover 118 is from starting to diminish gradually away from the end to end of rotating disc 112, and the internal diameter of the ladder endoporus of multiple grinding covers 118 is each unequal.
The internal diameter of the ladder endoporus of multiple grinding covers 118 is each unequal, can carry out grinding to the different oily piston 300 of multiple external diameters, and operating efficiency is high, highly versatile, and the excircle dimension after processing is stable.
The internal diameter of the ladder endoporus of each grinding cover 118 reduces from top to bottom gradually, 118 places are overlapped in the grinding that drives oily piston 300 to move to corresponding size by cylinder 117, when grinding starts, oil piston 300 is positioned at the top of grinding cover 118, along with the increase of grinding time, the outside diameter of oil piston 300 starts to reduce, the top of now grinding cover 118 can not meet grinding requirement, cylinder 117 drives oily piston 300 to start to decline, drop to this grinding cover 118 and continue grinding with the excircle dimension matching part of oily piston 300, so move in circles, until the cylindrical of oily piston 300 meets after instructions for use, stop grinding.
In the present embodiment, the quantity of grinding cover 118 is four, and four grinding covers 118 are evenly distributed on rotating disc 112.
As a kind of embodiment, grinding subassembly 100 also comprises multidiameter 122, and one end of multidiameter 122 is connected with cylinder 117, and the other end is connected with oily piston 300, and cylinder 117 motion multidiameter 122 transmissions, drive oily piston 300 to move.
In the present embodiment, grinding subassembly 100 also comprises universal joint 119, cylinder connector 120, adapter sleeve 121 and multidiameter 122, one end of universal joint 119 connects by cylinder connector 120, the other end is connected with multidiameter 122 by adapter sleeve 121, multidiameter 122 connects oily piston 300, cylinder 117 moves through universal joint 119, cylinder connector 120, adapter sleeve 121 and multidiameter 122 transmission successively, drives oily piston 300 to move.
The oily piston 300 that screw compression machine oil outside piston grinding attachment of the present utility model can be installed different size by multidiameter 122 carries out grinding.Cylinder 117 moves through universal joint 119, cylinder connector 120, adapter sleeve 121 and multidiameter 122 transmission successively, drive oily piston 300 to move, can ensure that oily piston 300 moves steadily in process, and after multidiameter 122 is connected by connector with adapter sleeve 121, and further fixing by pin at the external part of connector.
As a kind of embodiment, grinding subassembly 100 also comprises inner spacing collar 123 and outer separator 124, the quantity of bearing 113 is two, inner spacing collar 123 and outer separator 124 are arranged between two bearings 113, shape, the size of inner spacing collar 123 are consistent with shape, the size of the inner ring of bearing 113, and shape, the size of outer separator 124 are consistent with shape, the size of the outer ring of bearing 113.
Inner spacing collar 123 and outer separator 124 can provide pretightning force to bearing 113, simultaneously by the distance between design inner spacing collar 123 and two bearings 113 of width adjusting of outer separator 124.
As a kind of embodiment, grinding subassembly 100 also comprises base 125, and column 111 is fixedly installed on workbench by base 125.
Further, grinding subassembly 100 also comprises outer transparent cover 126, interior transparent cover 127 and outer back-up ring 128, outer back-up ring 128 contacts with the inner ring of the bearing 113 away from rotating disc 112, interior transparent cover 127 is sleeved on column 111, contact with the inner ring of the bearing 113 near rotating disc 112, and be connected with base 125, outer transparent cover 126 is sleeved on the outside of interior transparent cover 127, contact with the outer ring of the bearing 113 near rotating disc 112, and be connected with rotating disc 112, between outer back-up ring 128 and column 111, between interior transparent cover 127 and column 111, between outer transparent cover 126 and interior transparent cover 127, there is predeterminable range.
Rotating disc 112 is in the time rotating, the outer ring of bearing 113 can be rotated together along with rotating disc 112, the inner ring of bearing 113 and column 111 do not rotate for interference fit, outer transparent cover 126 is threaded connection part and is connected to rotation together with rotating disc 112 on rotating disc 112, interior transparent cover 127 is threaded connection part and is fixed on base 125, and outer back-up ring 128 is fixed on column 111 by trip bolt.
As a kind of embodiment, screw compression machine oil outside piston grinding attachment also comprises indexing positioning device 200, and indexing positioning device 200 is installed on workbench, and rotating disc 112 is fixed.
As a kind of embodiment, indexing positioning device 200 comprises locating piece 211, latch support plate 212, spring 213, pin bushing 214, latch 215 and latch handle 216, locating piece 211 is installed on rotating disc 112, latch support plate 212 is installed on workbench, spring 213 is installed in pin bushing 214, and pin bushing 214 is installed on latch support plate 212.One end of latch 215 is connected with latch handle 216 with pin bushing 214 through spring 213 successively, and the other end of latch 215 coordinates with locating piece 211 through latch support plate 212, and latch handle 216 moves back and forth and drives latch 215 to move back and forth.Further, require to be provided with on locating piece 211 groove matching with latch 215.On latch 215, be provided with the shaft shoulder, the external diameter of the shaft shoulder is greater than the external diameter of spring 213.Motion state by shaft shoulder control spring 213: free state and compressive state.
Further, latch handle 216 moves to a direction, pulls latch handle 216, drives latch 215 to move, and by the shaft shoulder Compress Spring 213 on latch 215, latch 215 departs from locating piece 211, and rotating disc 112 can rotate; Latch handle 216, to the motion of another direction, is decontroled latch handle 216, spring 213 state that affranchises, and latch 215 coordinates with locating piece 211, and rotating disc 112 can not rotate.Rotate by rotating disc 112, the grinding cover 118 of selecting size to adapt is corresponding with oily piston 300, coordinate with locating piece 211 away from one end of latch handle 216 by latch 215 subsequently, coordinate rotating disc 112 is fixed with locating piece 211, oily piston 300 is carried out to grinding.
As a kind of embodiment, the quantity of locating piece 211 is multiple, and multiple locating pieces 211 are evenly distributed on the marginal position of rotating disc 112, by coordinating of latch 215 and locating piece 211, controls grinding cover 118 corresponding with oily piston 300 positions of corresponding size.
As a kind of embodiment, screw compression machine oil outside piston grinding attachment also comprises bracing frame 500 and safety device, workbench is installed on bracing frame 500, and workbench overlaps with the table top of bracing frame 500, and safety device is installed on bracing frame 500.
In the present embodiment, safety device comprises protective cover 600, safe grating 700, siren 800, protective cover 600 is installed on bracing frame 500, electric cabinet 400 is installed on protective cover 600, safe grating 700 is respectively installed on protective cover 600 with siren 800, and is electrically connected with electric cabinet 400.
Protective cover 600 is arranged on above bracing frame 500, and workbench is fenced up, and shields.Electric cabinet 400, safe grating 700 and siren 800 are installed on protective cover 600, once there is mistake and violation operation, screw compression machine oil outside piston grinding attachment of the present utility model will automatically stop, resetting.
When various oily piston 300 cylindricals are carried out to grinding, need to select grinding cover 118 correspondingly.
As shown in Figure 9, screw compression machine oil outside piston grinding attachment of the present utility model, in the time of operation, is first fixed on oily piston 300 above the universal joint 119 of cylinder 117 by multidiameter 122.Then pull up latch handle 216, rotation rotating disc 112, selects grinding cover 118 correspondingly.Subsequently, decontrol latch handle 216, latch 215 is coordinated with the locating piece 211 on rotating disc 112, make rotating disc 112 fixing.Oil after piston 300 installs, sets the parameter that needs grinding on electric cabinet 400, and pressing start button just can starting drive, and cylinder is started working.Cylinder 117 drives oily piston 300 to overlap the grinding repeatedly of 118 the insides in grinding, until complete the grinding number of times of setting, cylinder quits work.Take off oily piston 300, circulation finishes.The omnidistance work of screw compression machine oil outside piston grinding attachment of the present utility model is controlled by electric cabinet 400, has improved operating efficiency.
The screw compression machine oil outside piston grinding attachment of above-mentioned utility model, structural design advantages of simple, grinding cover by grinding subassembly carries out grinding to oily outside piston, ensure the uniformity of oily outside piston size, and can eliminate the unstable hidden danger of quality bringing of manual operation dynamics, ensure product quality.Screw compression machine oil outside piston grinding attachment of the present utility model is simple, convenient simultaneously, has reduced labour intensity, has improved operating efficiency, lower to operating personnel's requirement, and this plant automation degree is high, and production capacity is large, and versatility is high.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. a screw compression machine oil outside piston grinding attachment, it is characterized in that, comprise workbench, grinding subassembly and electric cabinet, described grinding subassembly is installed on described workbench, described electric cabinet is electrically connected with described grinding subassembly, described grinding subassembly comprises grinding cover, and oily piston is installed in the grinding cover on described grinding subassembly and carries out grinding.
2. screw compression machine oil outside piston grinding attachment according to claim 1, it is characterized in that, described grinding subassembly also comprises column, rotating disc, bearing, hush panel, rear stub and cylinder, one end of described column is installed on described workbench, the other end is provided with described hush panel, described hush panel is connected with described cylinder by described rear stub, described rotating disc is installed on described column one end near described workbench by described bearing, and there is predeterminable range between described rotating disc and described workbench, described grinding cover is installed on described rotating disc, the output shaft of described cylinder is connected with oily piston, drive oily piston move up and down and rotate in described grinding cover.
3. screw compression machine oil outside piston grinding attachment according to claim 2, it is characterized in that, the quantity of described grinding cover is multiple, and described grinding cover is evenly distributed on described rotating disc, described grinding cover is provided with ladder endoporus, the internal diameter of the ladder endoporus of each described grinding cover diminishes gradually from the end to end away from described rotating disc, and the internal diameter of the ladder endoporus of multiple described grinding covers is each unequal.
4. screw compression machine oil outside piston grinding attachment according to claim 3, it is characterized in that, described grinding subassembly also comprises multidiameter, one end of described multidiameter is connected with described cylinder, the other end is connected with oily piston, described cylinder moving, by described multidiameter transmission, drives oily piston movement.
5. screw compression machine oil outside piston grinding attachment according to claim 3, it is characterized in that, described grinding subassembly also comprises inner spacing collar and outer separator, the quantity of described bearing is two, described inner spacing collar and outer separator are arranged between two described bearings, shape, the size of described inner spacing collar are consistent with shape, the size of the inner ring of described bearing, and shape, the size of described outer separator are consistent with shape, the size of the outer ring of described bearing.
6. according to the screw compression machine oil outside piston grinding attachment described in claim 3 to 5 any one, it is characterized in that, also comprise indexing positioning device, described indexing positioning device is installed on described workbench, and described rotating disc is fixed.
7. screw compression machine oil outside piston grinding attachment according to claim 6, it is characterized in that, described indexing positioning device comprises locating piece, latch support plate, spring, pin bushing, latch and latch handle, described locating piece is installed on described rotating disc, described latch support plate is installed on described workbench, described spring fitting is in described pin bushing, described pin bushing is installed on described latch support plate, one end of described latch is connected with described latch handle with described pin bushing through described spring successively, the other end of described latch coordinates with described locating piece through described latch support plate, described latch handle moves back and forth and drives described latch to move back and forth, on described latch, be provided with the shaft shoulder, the external diameter of the described shaft shoulder is greater than the external diameter of described spring.
8. screw compression machine oil outside piston grinding attachment according to claim 7, it is characterized in that, described latch handle moves to a direction, drive described latch motion, compress described spring by the shaft shoulder on described latch, described latch departs from described locating piece, and described rotating disc can rotate; Described latch handle is to the motion of another direction, the described spring state that affranchises, and described latch coordinates with described locating piece away from one end of described latch handle, and described rotating disc can not rotate.
9. screw compression machine oil outside piston grinding attachment according to claim 8, it is characterized in that, the quantity of described locating piece is multiple, multiple described locating pieces are evenly distributed on the marginal position of described rotating disc, by coordinating of described latch and described locating piece, control described grinding cover corresponding with the oily piston position of corresponding size.
10. screw compression machine oil outside piston grinding attachment according to claim 1, is characterized in that, also comprise bracing frame and safety device, described workbench is installed on support frame as described above, and described safety device is installed on support frame as described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420175686.3U CN203901026U (en) | 2014-04-11 | 2014-04-11 | Device for grinding outer circle of oil piston of screw rod compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420175686.3U CN203901026U (en) | 2014-04-11 | 2014-04-11 | Device for grinding outer circle of oil piston of screw rod compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203901026U true CN203901026U (en) | 2014-10-29 |
Family
ID=51775320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420175686.3U Withdrawn - After Issue CN203901026U (en) | 2014-04-11 | 2014-04-11 | Device for grinding outer circle of oil piston of screw rod compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203901026U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934734A (en) * | 2014-04-11 | 2014-07-23 | 珠海格力电器股份有限公司 | Grinding device for outer circle of oil piston of screw compressor |
| CN108032151A (en) * | 2017-11-27 | 2018-05-15 | 宁波江北清锐汽车零部件有限公司 | Adjustable bearing sanding apparatus |
-
2014
- 2014-04-11 CN CN201420175686.3U patent/CN203901026U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934734A (en) * | 2014-04-11 | 2014-07-23 | 珠海格力电器股份有限公司 | Grinding device for outer circle of oil piston of screw compressor |
| CN108032151A (en) * | 2017-11-27 | 2018-05-15 | 宁波江北清锐汽车零部件有限公司 | Adjustable bearing sanding apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141029 Effective date of abandoning: 20160914 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |