CN203621997U - Clamp for rough milling machining of intake and exhaust surfaces of engine cylinder head - Google Patents
Clamp for rough milling machining of intake and exhaust surfaces of engine cylinder head Download PDFInfo
- Publication number
- CN203621997U CN203621997U CN201320705927.6U CN201320705927U CN203621997U CN 203621997 U CN203621997 U CN 203621997U CN 201320705927 U CN201320705927 U CN 201320705927U CN 203621997 U CN203621997 U CN 203621997U
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- China
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- support column
- cylinder cap
- cylinder head
- pressing plate
- rough milling
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Abstract
The utility model discloses a clamp for rough milling machining of intake and exhaust surfaces of an engine cylinder head. The clamp comprises a bottom plate, wherein a positioning mechanism used for positioning the cylinder head and a pressing mechanism used for pressing the cylinder head at two end parts of the top surface of the cylinder head are arranged on the bottom plate; and the positioning mechanism comprises a plurality of support plates arranged on the top surface of the bottom plate, the top surfaces of the support plates are planes, and the bottom surface of the cylinder head is placed on a supporting plane formed by the supporting plates. Compared with the prior art, the clamp takes the support plates to replace long strip-shaped plates, so that contact surface of the cylinder head during clamping is greatly reduced, the problem of overlarge planeness caused by the fact that a locating surface of a conventional tool is overlarge is greatly reduced, the cylinder head can be accurately clamped, solid foundation is laid for reducing unnecessary system errors in the rough milling machining procedure of the intake and exhaust surfaces of the cylinder head, and cylinder head is accurately clamped; and the clamp is simple in structure, convenient to operate and high in machining cylinder efficiency, and a worker for machining the product can take up the job and perform operation without training.
Description
Technical field
The utility model relates to a kind of clamping device, and specifically, the utility model relates to a kind of for engine cylinder cover intake and exhaust face rough milling fixture.
Background technology
At present, in automobile engine cylinder head mechanical processing process, the inlet and outlet face of rough milling is a very important procedure in process, and the precision of its processing will directly have influence on the quality of the product quality of engine cylinder cover, particularly frock clamp to the impact of machining accuracy.Because engine cylinder cover structure is very complicated, the rough milling technology difficulty of its inlet and outlet face is very large, wherein major part is frock problem, in general process, often adopting built-up jig general on lathe to realize frock clamps, when clamping, be on lathe, cylinder cap to be placed on two strip plates, then with being with helical spring pressing plate to push down cylinder cap, then starting lathe and carry out fine finishining.Adopt this installation way, this just needs operator to have very masterful technique, and due to the complexity of automobile engine cylinder head structure, make operator consuming time a lot of in the time selecting and general built-up jig is installed, cylinder cap working (machining) efficiency has been caused again to unnecessary impact, and because the large datum level of strip plate has caused locating surface flatness problems of too, to such an extent as to produce very large system deviation, now the yield rate of the cylinder cap of processing just declines to some extent.So select a kind of special in the time of cylinder cap rough milling accurately the fixture of clamping cylinder cap just seem particularly urgent.
Utility model content
The utility model provides a kind of engine cylinder cover intake and exhaust face rough milling fixture, and object is in the time of cylinder cap intake and exhaust face rough milling, realizes the accurate device to cylinder cap.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of engine cylinder cover intake and exhaust face rough milling fixture, comprise base plate, base plate is provided with for the detent mechanism to cylinder cap location with for the hold-down mechanism of position, the both ends hold-down cylinder lid at top surface of cylinder cover, detent mechanism is included in several gripper shoes that plate top surface arranges, the end face of gripper shoe is plane, and cylinder cap is placed on the supporting plane of gripper shoe formation with its bottom surface.
Described gripper shoe is provided with six altogether, and wherein four gripper shoes are symmetrically distributed in the both sides of described cylinder cap length direction, and two other gripper shoe lays respectively at two corner positions places of cylinder cap along wherein diagonal of cylinder cap.
Described detent mechanism also comprises two alignment pins that are located on described base plate, one of them is straight pin, another is rhombus pin, two alignment pins lay respectively at two other corner positions place of cylinder cap along another diagonal of described cylinder cap, have and two locating holes that alignment pin is suitable in the choosing of the bottom surface of described cylinder cap.
Described gripper shoe is rectangle.
Described hold-down mechanism comprises the first support column being located on described base plate and is set on the first support column for compressing the pressing plate of cylinder cap, the first support column is distributed in the two ends of described detent mechanism, the top that is positioned at pressing plate on the first support column is provided with clamp nut, and the below that is positioned at pressing plate on the first support column is also arranged with Compress Spring.
The seal face of described pressing plate is provided with pressure pad.
Described pressing plate be provided with for the elongated hole of described the first support column socket.
Described base plate is provided with the second support column for the end portion supports pressing plate at described pressing plate, and the second support column parallels and is located along the same line with described the first support column.
Described the first support column and the second support column with base plate for being threaded.
The utility model adopts technique scheme, compared with prior art, this fixture replaces strip plate with gripper shoe, the contact surface of cylinder cap in clamping reduced greatly, thereby greatly reduce traditional frock and produced because locating surface is excessive the problem of excessive flatness, can realize the accurate clamping of cylinder cap, in rough milling operation for cylinder cap intake and exhaust face, reducing unnecessary systematic error lays a solid foundation, realize the accurate clamping of cylinder cap, and this clamp structure is simple, easy to operate, processing cylinder cap efficiency is high, the employee who processes this product especially can operation on duty without training.
Accompanying drawing explanation
Fig. 1 is the structural representation of fixture of the present utility model;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is that fixture of the present utility model is at the structural representation clamping after cylinder cap;
Fig. 4 is the top view of Fig. 3;
Mark in above-mentioned figure is: 1, pressing plate; 2, flat shim; 3, Compress Spring; 4, the first support column; 5, the second support column; 6, base plate; 7, straight pin; 8, rhombus pin; 9, gripper shoe; 10, cylinder cap.
The specific embodiment
As shown in Figures 1 to 4, a kind of engine cylinder cover intake and exhaust face of the utility model rough milling fixture, it comprises the base plate 6 of a strip, be provided with detent mechanism for cylinder cap 10 is positioned and the hold-down mechanism for position, the both ends hold-down cylinder lid 10 at cylinder cap 10 end faces at the end face of base plate 6, detent mechanism is included in several gripper shoes 9 that base plate 6 end faces arrange, the end face of gripper shoe 9 is the plane parallel with base plate 6 end faces, and cylinder cap 10 is placed on the supporting plane that all gripper shoes 9 form with its bottom surface.Compared with prior art, this fixture replaces strip plate with gripper shoe 9, the contact surface of cylinder cap 10 in clamping reduced greatly, thereby greatly reduce traditional frock and produced because locating surface is excessive the problem of excessive flatness, can realize the accurate clamping of cylinder cap 10, in rough milling operation for cylinder cap 10 intake and exhaust faces, reduce unnecessary systematic error and lay a solid foundation, realized the accurate clamping of cylinder cap 10.
Specifically, the gripper shoe 9 of detent mechanism is provided with six altogether, gripper shoe 9 is arranged on the end face of base plate 6 by screw, wherein four gripper shoe 9 medium position places at base plate 6 end faces in rectangular layout, the medium position of corresponding cylinder cap 10 bottom surfaces, two other gripper shoe 9 wherein diagonal along cylinder cap 10 on base plate 6 is corresponding with two corner positions of cylinder cap 10 respectively, gripper shoe 9 is rectangle, end face is plane, the supporting plane that gripper shoe 9 forms can accurately be located cylinder cap 10, and support to cylinder cap 10 is reliable and stable.
Detent mechanism is also included in two alignment pins that base plate 6 end faces arrange, one of them is straight pin 7, another is rhombus pin 8, two alignment pins are corresponding with two other corner positions of cylinder cap 10 respectively along another diagonal of cylinder cap 10, have and two locating holes that alignment pin is suitable in the choosing of the bottom surface of cylinder cap 10, alignment pin is set and locates man-hour more accurately reliably to guarantee that cylinder cap 10 adds.Straight pin 7 and rhombus pin 8 insert and are fixed in locating hole respectively for the locating hole of alignment pin is installed on base plate 6, to be processed with two, and the top of these two alignment pins is also provided with nylon locating pad and avoids unnecessary scuffing with protection cylinder cap 10.In whole fixture, the position dimension of two alignment pins and gripper shoe 9 all must strictly limit to play the technical requirement that this fixture meets product processing.When locating pad generation excessive deformation in multiple clamping or gripper shoe 9 wear extenies can be changed when excessive in time.
The hold-down mechanism of this fixture matches to compress cylinder cap 10 with detent mechanism, hold-down mechanism is pressed on cylinder cap 10 on the supporting plane that gripper shoe 9 forms at the two ends of cylinder cap 10 end faces.Hold-down mechanism comprises and is located at the first support column 4 on base plate 6 and is set on the first support column 4 for compressing the pressing plate 1 of cylinder cap 10, the first support column 4 is provided with two, lay respectively at the two ends of detent mechanism, gripper shoe 9 apart from detent mechanism end has certain distance, pressing plate 1 is provided with the elongated hole for being socketed with the first support column 4, pressing plate 1 is strip, elongated hole extends along pressing plate 1 length direction, the top that is positioned at pressing plate 1 on the first support column 4 is provided with the clamp nut being threaded, the below that is positioned at pressing plate 1 on the first support column 4 is also arranged with a Compress Spring 3, this Compress Spring 3 is cylindrically coiled spring, Compress Spring 3 one end are against the bottom surface of pressing plate 1, the other end is against on the nut of support column bottom.In the time of clamping, by being screwed down clamp nut, can make pressing plate 1 be pressed on cylinder cap 10.The first support column 4 in lower end with base plate 6 for being threaded, and by nut tight.
Because pressing plate 1 is provided with elongated hole, on the first support column 4, be also arranged with a flat shim 2, this flat shim 2 is clipped between Compress Spring 3 and pressing plate 1 bottom surface.
The bottom surface for the end that compresses of pressing plate 1 is seal face, on seal face, be provided with pressure pad, pressure pad adopts nylon to make, in case fixture produces excessive permanent compressive strain to cylinder cap 10 in the time of clamping, and when changing in time when pressure pad generation excessive deformation in multiple clamping.
On base plate 6, be also provided with the second support column 5 that supports pressing plate 1 for the other end at pressing plate 1, the second support column 5 is also provided with two, the outside that two the second support columns 5 are positioned at two the first support columns 4 parallels with the first support column 4, and the second support column 5 and the first support column 4 are located along the same line.The second support column 5 forms and supports pressing plate 1, guarantees pressing plate 1 reliable clamping.The second support column 5 in lower end with base plate 6 for being threaded, and by nut tight.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (5)
1. an engine cylinder cover intake and exhaust face rough milling fixture, it is characterized in that: comprise base plate, base plate is provided with for the detent mechanism to cylinder cap location with for the hold-down mechanism of position, the both ends hold-down cylinder lid at top surface of cylinder cover, detent mechanism is included in several gripper shoes that plate top surface arranges, the end face of gripper shoe is plane, and cylinder cap is placed in its bottom surface on the supporting plane of gripper shoe formation;
Described hold-down mechanism comprises the first support column being located on described base plate and is set on the first support column for compressing the pressing plate of cylinder cap, the first support column is distributed in the two ends of described detent mechanism, the top that is positioned at pressing plate on the first support column is provided with clamp nut, and the below that is positioned at pressing plate on the first support column is also arranged with Compress Spring; The seal face of described pressing plate is provided with pressure pad, and pressure pad adopts nylon to make, pressing plate be also provided with for the elongated hole of described the first support column socket, elongated hole extends along the length direction of pressing plate; On the first support column, be also arranged with a flat shim, this flat shim is clipped between Compress Spring and the bottom surface of pressing plate; Described base plate is provided with the second support column for the end portion supports pressing plate at described pressing plate, and the second support column parallels and is located along the same line with the first support column.
2. engine cylinder cover intake and exhaust face rough milling fixture according to claim 1, it is characterized in that: described gripper shoe is provided with six altogether, wherein four gripper shoes are symmetrically distributed in the both sides of described cylinder cap length direction, and two other gripper shoe lays respectively at two corner positions places of cylinder cap along wherein diagonal of cylinder cap.
3. engine cylinder cover intake and exhaust face rough milling fixture according to claim 2, it is characterized in that: described detent mechanism also comprises two alignment pins that are located on described base plate, one of them is straight pin, another is rhombus pin, two alignment pins lay respectively at two other corner positions place of cylinder cap along another diagonal of described cylinder cap, have and two locating holes that alignment pin is suitable in the choosing of the bottom surface of described cylinder cap.
4. according to the engine cylinder cover intake and exhaust face rough milling fixture described in claim 2 or 3, it is characterized in that: described gripper shoe is rectangle.
5. engine cylinder cover intake and exhaust face rough milling fixture according to claim 4, is characterized in that: described the first support column and the second support column with base plate for being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320705927.6U CN203621997U (en) | 2013-11-09 | 2013-11-09 | Clamp for rough milling machining of intake and exhaust surfaces of engine cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320705927.6U CN203621997U (en) | 2013-11-09 | 2013-11-09 | Clamp for rough milling machining of intake and exhaust surfaces of engine cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203621997U true CN203621997U (en) | 2014-06-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320705927.6U Expired - Fee Related CN203621997U (en) | 2013-11-09 | 2013-11-09 | Clamp for rough milling machining of intake and exhaust surfaces of engine cylinder head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203621997U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105382590A (en) * | 2015-10-12 | 2016-03-09 | 无锡曙光模具有限公司 | Base part bottom face machining clamp |
| CN109937116A (en) * | 2017-10-17 | 2019-06-25 | 株式会社太科 | Part positioning jig and the part positioning device for using the part positioning jig |
| CN110682129A (en) * | 2019-10-22 | 2020-01-14 | 遵义汇航机电有限公司 | Fixture for milling and drilling front face of guide rail bracket on launcher |
| CN110788651A (en) * | 2019-12-10 | 2020-02-14 | 安徽华菱汽车有限公司 | Cylinder cover clamp |
-
2013
- 2013-11-09 CN CN201320705927.6U patent/CN203621997U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105382590A (en) * | 2015-10-12 | 2016-03-09 | 无锡曙光模具有限公司 | Base part bottom face machining clamp |
| CN105382590B (en) * | 2015-10-12 | 2018-04-03 | 无锡曙光模具有限公司 | A kind of base part bottom surface clamp for machining |
| CN109937116A (en) * | 2017-10-17 | 2019-06-25 | 株式会社太科 | Part positioning jig and the part positioning device for using the part positioning jig |
| CN109937116B (en) * | 2017-10-17 | 2022-04-19 | 株式会社太科 | Part positioning jig and part positioning device using same |
| CN110682129A (en) * | 2019-10-22 | 2020-01-14 | 遵义汇航机电有限公司 | Fixture for milling and drilling front face of guide rail bracket on launcher |
| CN110788651A (en) * | 2019-12-10 | 2020-02-14 | 安徽华菱汽车有限公司 | Cylinder cover clamp |
| CN110788651B (en) * | 2019-12-10 | 2024-04-05 | 安徽华菱汽车有限公司 | Cylinder cover clamp |
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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 |
Granted publication date: 20140604 Termination date: 20141109 |
|
| EXPY | Termination of patent right or utility model |