CN204449379U - Bipyramid wedge self-centering fixture - Google Patents
Bipyramid wedge self-centering fixture Download PDFInfo
- Publication number
- CN204449379U CN204449379U CN201420781208.7U CN201420781208U CN204449379U CN 204449379 U CN204449379 U CN 204449379U CN 201420781208 U CN201420781208 U CN 201420781208U CN 204449379 U CN204449379 U CN 204449379U
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- wedge
- pull bar
- core
- bipyramid
- mandrel
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Abstract
The utility model provides a kind of bipyramid wedge self-centering fixture, can with cylinder cover inner hole radial location, and clamping is firm, and workpiece is easy for going up and down, and cylinder jacket is respectively to uniform force, and machining accuracy is high.It comprises through the mandrel of Flange joint on lathe, it is characterized in that: described mandrel inner chamber is provided with pull bar, and described pull bar is connected with hydraulic cylinder piston in flange side; Described mandrel is cut with fixed axoid along its excircle, described pull bar is set with movable cone core, described fixed axoid and movable pull bar of boring between core are set with maintainance set, wedge before described maintainance set front end is provided with and mates with fixed axoid, described maintainance set rear end is provided with the rear wedge of to bore core with activity and mating; Pull bar outside described activity cone core is set with terminal pad, and described terminal pad is fixed on pull bar through multiple nut.
Description
Technical field
The utility model relates to auto parts and components clamp for machining, is specifically related to a kind of cylinder jacket clamps.
Background technology
Gas engine part major part cylinder jacket industry tradition roughing technique is rough bore, then to rough turn cylindrical.Rough bore location makes cylindrical with cylinder liner blank two ends and plane locating clip is tight.Cylinder liner blank is centrifugal casting, and the depth of parallelism of both ends of the surface and cylindrical are not too regular.Such cylinder jacket inside and outside circle allowance very large [Excircle machining amount 7 millimeters (diameter value), endoporus processing capacity 9-10 millimeter (diameter value)].
The advantage of centrifugal casting is by quantitative pouring, and endoporus obtains good surface quality, and hole size tolerance can be controlled in IT14 level (about 1 millimeter), and internal-external circle concentricity can be controlled in IT11 level (0.22 millimeter).The roughing skill of such cylinder jacket can the inclined both ends of the surface of the rough turn cylindrical of Internal hole positioning, then locate rough turn cylindrical with cylindrical and both ends of the surface, lack the clamps adapting to above-mentioned technique in prior art.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of bipyramid wedge self-centering fixture, can with cylinder cover inner hole radial location, and clamping is firm, and workpiece is easy for going up and down, and cylinder jacket is respectively to uniform force, and machining accuracy is high.
For solving the problems of the technologies described above, bipyramid wedge self-centering fixture of the present utility model, comprises through the mandrel of Flange joint on lathe, it is characterized in that: described mandrel inner chamber is provided with pull bar, and described pull bar is connected with hydraulic cylinder piston in flange side; Described mandrel is cut with fixed axoid along its excircle, described pull bar is set with movable cone core, described fixed axoid and movable pull bar of boring between core are set with maintainance set, wedge before described maintainance set front end is provided with and mates with fixed axoid, described maintainance set rear end is provided with the rear wedge of to bore core with activity and mating; Pull bar outside described activity cone core is set with terminal pad, and described terminal pad is fixed on pull bar through multiple nut.
After have employed technique scheme, by hydraulic cylinder piston tensile ties, through terminal pad pushes on movable cone core and maintainance set, front wedge, rear wedge, along conical surface radial motion, from inner side tensioner workpiece, realize stabilizing grip, when unclamping hydraulic cylinder piston, radial pressure disappears, and workpiece can take off, easy for going up and down; Because multiple front wedge and multiple rear wedge are uniformly distributed along the circumference in workpiece lumen, thus cylinder jacket is respectively to uniform force, does not produce deformation, and machining accuracy is high.
After clamping completes, workpiece and front wedge, rear wedge interlock, and can not naturally unclamp, and in order to head it off, the utility model has been disposed radially multiple pin further in the middle part of described maintainance set, and described pin is bored core through lock-screw with activity and is fixedly connected with.When hydraulic cylinder piston moves to right, movable cone core drives maintainance set to move to right through multiple pin, and front wedge, retread radial wedge distress resolves, automatically unclamps workpiece.
Described front wedge outer surface is provided with annular groove, in described annular groove, is provided with front wedge auxiliary positioning spring; Described rear wedge outer surface is provided with annular groove, in described annular groove, is provided with rear wedge auxiliary positioning spring.Further enhancing front wedge, locating effect between rear wedge and workpiece.
Be provided with sealing ring with on the axle of maintainance set binding site, the stroke of maintainance set in axis can be limited.
Accompanying drawing explanation
Fig. 1 is the structural representation of bipyramid wedge self-centering fixture of the present utility model;
Fig. 2 is the sectional view of Fig. 1 along A-A line.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, bipyramid wedge self-centering fixture of the present utility model, comprises the mandrel 2 be connected to through flange 1 on lathe, it is characterized in that: described mandrel 2 inner chamber is provided with pull bar 3, and described pull bar 3 is connected with hydraulic cylinder piston 4 in flange 1 side; Described mandrel 2 is cut with fixed axoid 20 along its excircle, described pull bar 3 is set with movable cone core 5, described fixed axoid 20 and movable pull bar 3 of boring between core 5 are set with maintainance set 6, wedge 7 before described maintainance set 6 front end is provided with and mates with fixed axoid 20, described maintainance set 6 rear end is provided with the rear wedge 8 of to bore core 5 with activity and mating; Pull bar 3 outside described activity cone core 5 is set with terminal pad 9, and described terminal pad 9 is fixed on pull bar 3 through multiple nut 90.
As shown in Figure 2, in axis, front wedge 7 can slide along maintainance set 6, in order to be assembled on maintainance set 6 by front wedge 7, multiple assembling mode can be taked, as one of implementation, the excircle of described maintainance set 6 is provided with some fins 60, the inner chamber of described front wedge 7 mates accordingly and arranges groove, and groove and fin 60 matched in clearance, realize relative sliding.
Be disposed radially multiple pin 61 in the middle part of described maintainance set 6, described pin 61 is bored core 5 through lock-screw 62 with activity and is fixedly connected with.
Described front wedge 7 outer surface is provided with annular groove, in described annular groove, is provided with front wedge auxiliary positioning spring 70; Described rear wedge 8 outer surface is provided with annular groove, in described annular groove, is provided with rear wedge auxiliary positioning spring 80.
Sealing ring 21 is provided with on the axle 2 of maintainance set 6 binding site.
The utility model clamping process: cylinder jacket 10 is sleeved on outside front wedge 7, rear wedge 8, hydraulic cylinder piston 4 moves to left, terminal pad 9, movable cone core 5, maintainance set 6 is strained successively through pull bar 3, front wedge 7 moves radially along fixed axoid 20, rear wedge 8 along the conical surface of activity cone core 5, locking cylinder overlaps 10 inner chambers, then can carry out processing operation.
The utility model blanking process: hydraulic cylinder piston 4 moves to right, axial compressive force disappears, and movable cone core 5 moves to right, and distribution 61 drives maintainance set 6 to move to right, and front wedge 7, rear wedge 8 radial pressure disappear, and cylinder jacket 10 can be taken off.
Claims (4)
1. a bipyramid wedge self-centering fixture, comprise the mandrel (2) be connected to through flange (1) on lathe, it is characterized in that: described mandrel (2) inner chamber is provided with pull bar (3), described pull bar (3) is connected with hydraulic cylinder piston (4) in flange (1) side; Described mandrel (2) is cut with fixed axoid (20) along its excircle, described pull bar (3) is set with movable cone core (5), described fixed axoid (20) and movable pull bar (3) of boring between core (5) are set with maintainance set (6), described maintainance set (6) front end is provided with the front wedge (7) mated with fixed axoid (20), and described maintainance set (6) rear end is provided with the rear wedge (8) of to bore core (5) with activity and mating; The pull bar (3) in described activity cone core (5) outside is set with terminal pad (9), and described terminal pad (9) is fixed on pull bar (3) through multiple nut (90).
2. bipyramid wedge self-centering fixture as claimed in claim 1, is characterized in that: described maintainance set (6) middle part has been disposed radially multiple pin (61), and described pin (61) is bored core (5) through lock-screw (62) with activity and is fixedly connected with.
3. bipyramid wedge self-centering fixture as claimed in claim 1 or 2, is characterized in that: described front wedge (7) outer surface is provided with annular groove, is provided with front wedge auxiliary positioning spring (70) in described annular groove; Described rear wedge (8) outer surface is provided with annular groove, in described annular groove, is provided with rear wedge auxiliary positioning spring (80).
4. bipyramid wedge self-centering fixture as claimed in claim 1 or 2, is characterized in that: be provided with sealing ring (21) with on the axle (2) of maintainance set (6) binding site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420781208.7U CN204449379U (en) | 2014-12-12 | 2014-12-12 | Bipyramid wedge self-centering fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420781208.7U CN204449379U (en) | 2014-12-12 | 2014-12-12 | Bipyramid wedge self-centering fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204449379U true CN204449379U (en) | 2015-07-08 |
Family
ID=53656327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420781208.7U Expired - Fee Related CN204449379U (en) | 2014-12-12 | 2014-12-12 | Bipyramid wedge self-centering fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204449379U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551072A (en) * | 2014-12-12 | 2015-04-29 | 安徽白兔湖动力股份有限公司 | Dual-cone inclined wedge self-centering clamp |
| CN108098416A (en) * | 2016-11-25 | 2018-06-01 | 湖北江山液压科技有限公司 | A kind of hydromechanical mandrel Vehicular device |
| CN109605146A (en) * | 2018-11-30 | 2019-04-12 | 中国第汽车股份有限公司 | A kind of even gear input shaft deep Hole system and method for grinding |
-
2014
- 2014-12-12 CN CN201420781208.7U patent/CN204449379U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551072A (en) * | 2014-12-12 | 2015-04-29 | 安徽白兔湖动力股份有限公司 | Dual-cone inclined wedge self-centering clamp |
| CN104551072B (en) * | 2014-12-12 | 2017-06-30 | 安徽白兔湖动力股份有限公司 | Bipyramid wedge self-centering fixture |
| CN108098416A (en) * | 2016-11-25 | 2018-06-01 | 湖北江山液压科技有限公司 | A kind of hydromechanical mandrel Vehicular device |
| CN108098416B (en) * | 2016-11-25 | 2024-04-12 | 中国兵器工业集团江山重工研究院有限公司 | Hydraulic mandrel vehicle device |
| CN109605146A (en) * | 2018-11-30 | 2019-04-12 | 中国第汽车股份有限公司 | A kind of even gear input shaft deep Hole system and method for grinding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20201212 |