CN211680072U - Workpiece positioning and pressing device - Google Patents
Workpiece positioning and pressing device Download PDFInfo
- Publication number
- CN211680072U CN211680072U CN202020115038.4U CN202020115038U CN211680072U CN 211680072 U CN211680072 U CN 211680072U CN 202020115038 U CN202020115038 U CN 202020115038U CN 211680072 U CN211680072 U CN 211680072U
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- rises
- expansion
- cover
- location
- bottom plate
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Abstract
The utility model relates to a work piece location closing device belongs to the machine-building technical field, and it includes the bottom plate with workstation fixed connection, is equipped with location closing device on the bottom plate, and location closing device includes the location axle, rises the cover and the core that rises, and the location axle can be dismantled with the bottom plate and be connected, and the cover that rises is established epaxially in the location, and the top of the cover that rises is seted up the inflation groove, and the core that rises inlays in the cover that rises and applys radial force to the cover that rises, makes the cover that rises outwards open. The utility model discloses have the effect that can compensate the hole tolerance between the work piece.
Description
Technical Field
The utility model relates to a machine-building technical field, in particular to work piece location closing device.
Background
As a machining industry, various disc workpieces are frequently encountered, and other surfaces to be machined need to be positioned and machined by taking a machined inner hole as a reference.
At present, a workpiece is positioned by a positioning pin shaft in a common mode, namely the positioning pin shaft is fixed on a workbench, the diameter of the positioning pin shaft is the same as that of an inner hole of the workpiece, the inner hole of the workpiece is sleeved on the positioning pin shaft when the workpiece is machined, and at the moment, the positioning pin shaft positions the workpiece so as to machine the workpiece.
The above prior art solutions have the following drawbacks: the diameter of the positioning pin shaft is fixed and unchanged, the hole diameter of an inner hole between different workpieces often has certain tolerance, the tolerance of the inner hole needs to be reduced when the inner hole of the workpiece is machined in order to ensure that the workpiece can be accurately positioned in cooperation with the positioning pin shaft in subsequent machining, and the machining difficulty is increased undoubtedly, and the machining efficiency is influenced.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing a work piece location closing device, it has the effect that can compensate the hole tolerance between the work piece.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides a work piece location closing device, includes the bottom plate with workstation fixed connection, is equipped with location closing device on the bottom plate, and location closing device includes location axle, the cover that rises and the core that rises, and the location axle can be dismantled with the bottom plate and be connected, and the cover that rises is established at the location epaxially, and the top of the cover that rises has seted up the upper expansion groove, and the core that rises inlays in the cover that rises and applys radial force to the cover that rises, makes the cover that rises outwards open.
By adopting the technical scheme, when a workpiece is positioned, firstly, the expansion sleeve is sleeved on the positioning shaft to position the expansion sleeve; then sleeving the inner hole of the workpiece on the expansion sleeve, and positioning the workpiece by the expansion sleeve; afterwards, exert radial force to the cover that rises through the core that rises, because the cover top that rises is seted up and is expanded the groove, then the top of the cover that rises receives radial force and can outwards expand to closely butt with the inner wall of work piece hole, increase the stability of work piece, be convenient for process the work piece. By adopting the positioning and compressing device, because the expansion sleeve has a certain expansion space in the radial direction, the tolerance of an inner hole between workpieces can be compensated, accumulated errors are eliminated, special management on the inner hole is not needed, the processing difficulty of the workpieces is reduced, the processing efficiency is improved, and the production efficiency of the whole workpieces is improved.
The present invention may be further configured in a preferred embodiment as: the expansion core comprises an expansion block and a compression screw, the bottom of the expansion block is of a conical structure with the diameter gradually reduced from top to bottom, and the compression screw penetrates through the expansion block and is in threaded connection with the positioning shaft. Through adopting above-mentioned technical scheme, the taper structure of the piece bottom that rises and the top butt of the cover that rises, compression screw passes the piece and fixes a position axle threaded connection that rises, rotates compression screw and applys decurrent pressure to the piece that rises, then the piece that rises moves down, and its diameter grow gradually to radial effort is applyed to the cover that rises, will rise the outside expansion of cover and the inseparable butt of work piece inner wall, the completion is tight to the location of work piece clamp, is convenient for process the work piece.
The present invention may be further configured in a preferred embodiment as: the top end of the compression screw is fixedly connected with a compression block.
Through adopting above-mentioned technical scheme, the compact heap increases the area of contact of the top of compression screw and the piece top surface that rises, reduces stress concentration, makes the piece atress that rises more even, exerts even radial force to the cover that rises, makes the cover atress that rises even, and the degree of outside expansion is the same, prevents the work piece skew, improves the positioning accuracy to the work piece, simultaneously, helps increasing the fixed action to the work piece, improves the stability of work piece.
The present invention may be further configured in a preferred embodiment as: the side wall of the expansion sleeve is provided with a communication hole which is communicated with the bottom of the upper expansion groove.
Through adopting above-mentioned technical scheme, before seting up the inflation groove, at first set up the intercommunicating pore on the expansion sleeve, then process the inflation groove through the lathe at the top of expansion sleeve, until last inflation groove and intercommunicating pore intercommunication, prevent that the bottom of going up the inflation groove is sharp-pointed form, reduce the stress concentration of going up the inflation groove bottom, when can preventing the expansion sleeve expansion, go up inflation groove bottom fracture, improve the life of expansion sleeve.
The present invention may be further configured in a preferred embodiment as: the inner wall of the top of the expansion sleeve is an upper conical surface matched with the conical surface of the expansion block.
Through adopting above-mentioned technical scheme, the last conical surface at cover top and the taper structure cooperation of the piece bottom that rises become the face-to-face contact with the line face contact that rises between piece and the cover that rises, reduce the wearing and tearing to the cover top that rises, improve the life of the cover that rises to can make smooth and easy downstream of piece that rises, prevent the emergence of stuck phenomenon, use more smoothly.
The present invention may be further configured in a preferred embodiment as: a lower expansion part is arranged between the bottom of the positioning shaft and the bottom plate, the top of the lower expansion part is of a conical structure with the diameter increasing from top to bottom in sequence, and a lower expansion groove is formed in the bottom of the expansion sleeve.
Through adopting above-mentioned technical scheme, the piece that rises moves down, when exerting radial force to the cover that rises, exert decurrent effort to the cover that rises, the cover that rises moves down, because the diameter of the portion that rises down increases in proper order to exert radial force to the bottom of the cover that rises, the cover that rises receives great radial force, outside expansion and the inseparable butt of work piece hole, further fix a position the work piece and compress tightly, the top and the bottom of the cover that rises expand simultaneously and rise to the work piece, effectively increase the stability of work piece, improve the processingquality of work piece.
The present invention may be further configured in a preferred embodiment as: the inner wall of the bottom of the expansion sleeve is a lower conical surface matched with the conical surface of the lower expansion part.
Through adopting above-mentioned technical scheme, the lower conical surface of cover bottom and the taper structure cooperation at the portion top that rises down will rise down the portion and rise the line face contact between the cover and become the face-to-face contact, reduce the wearing and tearing to the cover bottom that rises, improve the life of cover that rises to can make smooth and easy downstream of the piece that rises, prevent the emergence of card pause phenomenon, use more smoothly.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the expansion sleeve is provided with a certain expansion space, so that the tolerance of the inner hole between the workpieces can be compensated, the accumulated error can be eliminated, the special management of the inner hole is not needed, and the processing difficulty of the workpiece is reduced;
2. the top and the bottom of the expansion sleeve can be expanded to increase the contact area with the inner hole of the workpiece, so that the clamping effect on the workpiece is increased, the stability of the workpiece is improved, and the workpiece is convenient to process.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an exploded view intended to show the lower cone.
Fig. 3 is a usage state diagram of the present invention.
Reference numerals: 1. a base plate; 11. a clamping groove; 2. positioning a pressing device; 21. positioning the shaft; 211. a lower expansion part; 22. expanding sleeves; 221. an upper expansion tank; 222. an upper conical surface; 223. a communicating hole; 224. a lower expansion tank; 225. a lower conical surface; 23. expanding the core; 231. expanding blocks; 232. a compression screw; 2321. a compression block; 3. a fixing assembly; 31. a fixing plate; 32. and (5) fixing the bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a work piece location closing device, including fixing bottom plate 1 on the workstation, be equipped with on bottom plate 1 and carry out the location closing device 2 of fixing a position to the work piece, location closing device 2 includes location axle 21, the cover 22 that rises and the core 23 that rises, and location axle 21 is connected with bottom plate 1, and the cover 22 cover that rises is established on location axle 21, and the core 23 that rises inlays in the cover 22 that rises and is connected with location axle 21, applys radial effort to the cover 22 that rises.
When the workpiece is positioned and compressed, the expansion sleeve 22 is sleeved on the positioning shaft 21, then the workpiece is sleeved on the periphery of the expansion sleeve 22 through the inner hole of the workpiece, then the expansion core 23 is embedded in the expansion sleeve 22, and radial acting force is applied to the expansion sleeve 22, so that the top of the expansion sleeve 22 is outwards expanded to be tightly abutted against the inner wall of the inner hole, and the workpiece is positioned and compressed, and the workpiece is convenient to process.
Referring to fig. 1, the positioning shaft 21 has a cylindrical structure, a lower expansion portion 211 is fixedly connected to the bottom of the positioning shaft 21, the lower expansion portion 211 has a cylindrical structure coaxial with the positioning shaft 21, and the diameter of the lower expansion portion 211 is the same as that of the outer wall of the expansion sleeve 22. The top of the lower expansion part 211 is in a conical structure with the diameter gradually increasing from top to bottom, and the diameter of the top surface of the lower expansion part 211 is the same as that of the positioning shaft 21.
Referring to fig. 1, be connected with fixed subassembly 3 between portion 211 and the bottom plate 1 that rises down, fixed subassembly 3 includes fixed plate 31 and fixing bolt 32, and fixed plate 31 is circular platelike structure, and fixed plate 31 and the portion 211 bottom surface fixed connection that rises down offer the inlay card groove 11 that is used for inlay card fixed plate 31 on the bottom plate 1, and fixed plate 31 inlays in inlay card groove 11, and the top surface flushes with the top surface of bottom plate 1. The fixing bolts 32 are arranged in a plurality of circumferential arrays on the top surface of the fixing plate 31, the fixing bolts 32 penetrate through the fixing plate 31 and then are in threaded connection with the bottom plate 1, the lower expansion part 211 is fixedly connected with the bottom plate 1, and the tops of the fixing bolts 32 are lower than the top surface of the bottom plate 1.
When fixing the location axle 21, inlay fixed plate 31 in the inlay card groove 11, through fixing bolt 32 with fixed plate 31 and bottom plate 1 fixed connection to with location axle 21 and bottom plate 1 fixed connection, be convenient for fix a position the work piece.
Referring to fig. 1, the expansion sleeve 22 is a cylindrical structure, the diameter of the outer wall of the expansion sleeve 22 is the same as the diameter of the inner hole of the workpiece, and the diameter of the inner wall of the expansion sleeve 22 is the same as the diameter of the positioning shaft 21. Referring to fig. 2, the inner wall of the bottom of the expansion sleeve 22 is a lower conical surface 225 structure matched with the conical surface of the lower expansion part 211, and after the expansion sleeve 22 is embedded on the positioning shaft 21, the lower conical surface 225 abuts against the conical surface of the top of the lower expansion part 211.
Referring to fig. 1, the side wall of the expansion sleeve 22 is provided with a plurality of communication holes 223, the communication holes 223 are evenly distributed along the circumference of the expansion sleeve 22 at intervals, and the communication holes 223 are located at the middle position of the expansion sleeve 22. The bottom of the expansion sleeve 22 is provided with a lower expansion groove 224, the length direction of the lower expansion groove 224 is the same as the axial direction of the expansion sleeve 22, and the top of the lower expansion groove 224 is communicated with the communication hole 223. The top of the expansion sleeve 22 is provided with an upper expansion groove 221, the length direction of the upper expansion groove 221 is the same as that of the lower expansion groove 224, the bottom of the upper expansion groove 221 is communicated with the communication hole 223, and the upper expansion groove 221 and the lower expansion groove 224 are arranged in a staggered mode at intervals to avoid being communicated with the same communication hole 223.
Referring to fig. 1, the expansion core 23 includes a cylindrical expansion block 231 and a compression screw 232, the expansion block 231 is coaxial with the expansion sleeve 22 and has the same diameter as the outer wall of the expansion sleeve 22, the bottom of the expansion block 231 has a tapered structure with gradually decreasing diameter from top to bottom, and the diameter of the bottom of the expansion block 231 is the same as the diameter of the inner wall of the expansion sleeve 22. The inner wall of the top of the expansion sleeve 22 is in an upper conical surface 222 structure matched with the conical surface of the expansion block 231.
Referring to fig. 1, the axis of the compression screw 232 coincides with the axis of the expansion block 231, vertically penetrates through the expansion block 231 and then is in threaded connection with the positioning shaft 21, the top of the compression screw 232 is fixedly connected with a compression block 2321, the compression block 2321 is of a cylindrical structure, the axis of the compression block 2321 coincides with the axis of the expansion block 231, and the circumferential surface of the compression block 2321 is provided with anti-slip threads, so that an operator can hold the compression block 2321 to rotate the compression screw 232.
The expansion sleeve 22 is sleeved on the positioning shaft 21, and the lower conical surface 225 at the bottom of the expansion sleeve 22 is abutted with the conical surface of the lower expansion part 211; then, the workpiece is sleeved on the periphery of the expansion sleeve 22 to position the workpiece; then, the expansion block 231 is embedded in the top of the expansion sleeve 22, so that the upper conical surface 222 of the expansion sleeve 22 is abutted against the conical surface of the expansion block 231; finally, the pressing screw 232 penetrates through the expansion block 231 to be in threaded connection with the positioning shaft 21, downward pressure is applied to the expansion block 231, the expansion block 231 and the lower expansion part 211 enable the top and the bottom of the expansion sleeve 22 to be expanded outwards and abut against the inner hole of the workpiece, and therefore the workpiece is fixed.
The implementation principle of the above embodiment is as follows:
when positioning and pressing a workpiece, firstly, the positioning shaft 21 and the lower expansion part 211 are fixedly connected with the bottom plate 1 through the fixing plate 31 and the fixing bolt 32; then, sleeving the expansion sleeve 22 on the positioning shaft 21, and sleeving the workpiece on the periphery of the expansion sleeve 22; then, the expansion block 231 is embedded in the top of the expansion sleeve 22, downward pressure is applied to the expansion block 231 through the compression screw 232, the expansion block 231 expands the top of the expansion sleeve 22, meanwhile, the lower expansion part 211 expands the bottom of the expansion sleeve 22, the bottom of the expansion sleeve is tightly abutted to the inner wall of the inner hole of the workpiece, and the stability of the workpiece is improved. Because the expansion sleeve 22 has a certain expansion space, the tolerance of the inner hole of the workpiece can be compensated, the requirement on processing the inner hole of the workpiece is low, special management on the inner hole is not needed, and the processing difficulty of the workpiece is reduced.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a work piece location closing device, includes bottom plate (1) with workstation fixed connection, its characterized in that: be equipped with location closing device (2) on bottom plate (1), location closing device (2) are including location axle (21), the cover that rises (22) and core (23) that rises, and location axle (21) can be dismantled with bottom plate (1) and be connected, and the cover that rises (22) cover is established on location axle (21), and the top of the cover that rises (22) has been seted up and has been expanded groove (221), and core (23) that rises inlays and apply radial force to the cover that rises (22) in the cover that rises (22), makes the cover that rises (22) outwards open.
2. The workpiece positioning and pressing device as set forth in claim 1, wherein: the expansion core (23) comprises an expansion block (231) and a compression screw (232), the bottom of the expansion block (231) is of a conical structure with the diameter gradually reduced from top to bottom, and the compression screw (232) penetrates through the expansion block (231) to be in threaded connection with the positioning shaft (21).
3. The workpiece positioning and pressing device as set forth in claim 2, wherein: the top end of the compression screw rod (232) is fixedly connected with a compression block (2321).
4. The workpiece positioning and pressing device as set forth in claim 2, wherein: the inner wall of the top of the expansion sleeve (22) is an upper conical surface (222) matched with the conical surface of the expansion block (231).
5. The workpiece positioning and pressing device as set forth in claim 1, wherein: the side wall of the expansion sleeve (22) is provided with a communicating hole (223), and the communicating hole (223) is communicated with the bottom of the upper expansion groove (221).
6. The workpiece positioning and pressing device as set forth in claim 1, wherein: a lower expansion part (211) is arranged between the bottom of the positioning shaft (21) and the bottom plate (1), the top of the lower expansion part (211) is of a conical structure with the diameter increasing from top to bottom in sequence, and a lower expansion groove (224) is formed in the bottom of the expansion sleeve (22).
7. The workpiece positioning and pressing device as set forth in claim 6, wherein: the inner wall of the bottom of the expansion sleeve (22) is a lower conical surface (225) matched with the conical surface of the lower expansion part (211).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020115038.4U CN211680072U (en) | 2020-01-19 | 2020-01-19 | Workpiece positioning and pressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020115038.4U CN211680072U (en) | 2020-01-19 | 2020-01-19 | Workpiece positioning and pressing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211680072U true CN211680072U (en) | 2020-10-16 |
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ID=72774909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020115038.4U Expired - Fee Related CN211680072U (en) | 2020-01-19 | 2020-01-19 | Workpiece positioning and pressing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211680072U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112935875A (en) * | 2021-03-12 | 2021-06-11 | 四川明日宇航工业有限责任公司 | Thin-wall structural part clamping tool and machining method |
-
2020
- 2020-01-19 CN CN202020115038.4U patent/CN211680072U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112935875A (en) * | 2021-03-12 | 2021-06-11 | 四川明日宇航工业有限责任公司 | Thin-wall structural part clamping tool and machining method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201016 Termination date: 20220119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |