CN203622001U - Novel fixture for rough and fine milling of bottom surface of bearing cover of engine camshaft - Google Patents
Novel fixture for rough and fine milling of bottom surface of bearing cover of engine camshaft Download PDFInfo
- Publication number
- CN203622001U CN203622001U CN201320724440.2U CN201320724440U CN203622001U CN 203622001 U CN203622001 U CN 203622001U CN 201320724440 U CN201320724440 U CN 201320724440U CN 203622001 U CN203622001 U CN 203622001U
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- pressing plate
- bearing cover
- adjusting rod
- fixture
- bearing cap
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Abstract
The utility model discloses a novel fixture for the rough and fine milling of the bottom surface of the bearing cover of an engine camshaft. The fixture comprises a bottom plate, wherein a locating mechanism used for locating the bearing cover and a pressing mechanism used for pressing the bearing cover are arranged on the bottom plate; the locating mechanism comprises a locating piece and at least two locating pins, the top surface of the locating piece is a plane, and the head parts of the locating pins are spherical surfaces; the side surface of the bearing cover is placed on a locating plane formed by the locating piece, the bottom surface of the bearing cover is located outside the fixture, the head parts of the locating pins are propped against the end surface of the bearing cover, the pressing mechanism comprises a supporting column, a pressing plate, and an adjusting rod used for adjusting the height of the pressing plate, the supporting column is sleeved with the pressing plate, and a locating groove matched with the adjusting rod is formed in the bottom surface of the pressing plate. Compared with the prior art, the fixture disclosed by the utility model has the advantages as follows: the locating groove matched with the adjusting rod is formed in the pressing plate, and the pressing plate is located through the adjusting rod, so that when a gland nut on the supporting column is screwed tightly, the adjusting rod can be used for preventing the pressing plate from rotating, and that the pressing position of the pressing plate is precise finally is ensured.
Description
Technical field
The utility model relates to a kind of fixture, and specifically, the utility model relates to the thick finish-milling fixture for processing in a kind of novel engine camshaft bearing cover bottom surface.
Background technology
At present, to meet location to inlet and outlet camshaft and fixing for the camshaft-bearing cap by engine in the main function of the camshaft-bearing cap of automobile engine, guarantee that cam is along with motion opening/closing inlet valve and the exhaust valve in time of piston in the time that camshaft rotates.So the machining accuracy of the camshaft-bearing cap particularly processing precision direct influence of bearing cap bottom surface the working condition of piston opening/closing inlet valve and exhaust valve, select at present a kind of special accurately clamping camshaft-bearing cap to carry out the fixture of the thick finish-milling in bottom surface, this fixture comprises base plate, base plate is provided with for the detent mechanism to bearing cap location with for compressing the hold-down mechanism of bearing cap, hold-down mechanism is pressed on cylinder cap on detent mechanism, hold-down mechanism comprises support column, be set in the adjusting rod for the height of pressing plate is regulated for compressing the pressing plate of cylinder cap and paralleling with support column on support column, support column is provided with the clamp nut for locking pressure plate.
State in the use fixture time, by being screwed down clamp nut, can make pressing plate move down compression bearing cap along support column.But in the process that screws clamp nut, pressing plate can be along with rotation, finally can cause pressing plate compacted position inaccurate, need to repeatedly adjust press plate position.And in the time regulating pressing plate height and position by adjusting rod, because adjusting rod is to be connected with base thread, and by nut tight, causing adjusting rod to regulate inconvenient, efficiency is low.
Utility model content
The utility model provides a kind of novel engine camshaft bearing cover bottom surface thick finish-milling fixture for processing, and object prevents pressing plate rotation while being the clamp nut on screwed support post, guarantee that pressing plate compacted position is accurate.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: the thick finish-milling fixture for processing in a kind of novel engine camshaft bearing cover bottom surface, comprise base plate, base plate is provided with for the detent mechanism to bearing cap location with for compressing the hold-down mechanism of bearing cap, detent mechanism comprises that end face is keeper and at least two alignment pins that head is sphere of plane, bearing cap is placed in its side on the plane of orientation of keeper formation, the bottom surface of bearing cap is positioned at the outside of fixture, the head of alignment pin is against on the end face of bearing cap, hold-down mechanism comprises support column, be set in the pressing plate on support column and the adjusting rod for the height of pressing plate is regulated, the bottom surface of pressing plate is provided with the detent matching with adjusting rod.
Described detent is the elongate slots of extending along described pressing plate length direction.
Also comprise screw-drive mechanism, screw-drive mechanism comprises the feed screw nut being fixedly connected with adjusting rod and the screw rod engaging with feed screw nut, and screw rod is supported on the set support of base, and base is provided with the pilot hole that allows adjusting rod insert.
Described keeper is arc.
Described alignment pin is provided with two, and centered by the axis of two alignment pins and described bearing cap, line is arranged symmetrically with.
Described hold-down mechanism is also included in the columniform pressure head arranging on described pressing plate and be positioned at keeper top, and pressure head is pressed on the side of bearing cap.
Described pressing plate be provided with for the elongated hole of described support column socket.
Described base plate is provided with a vertical panel, and described alignment pin is arranged on the side of vertical panel, and described support column is vertically arranged on vertical panel.
The utility model adopts technique scheme, compared with prior art, the detent matching with adjusting rod by setting on the pressing plate of this fixture, by adjusting rod, pressing plate is positioned, thereby when the clamp nut on screwed support post, adjusting rod can prevent pressing plate rotation, finally can guarantee that pressing plate compacted position is accurate.
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;
Mark in above-mentioned figure is: 1, base plate; 2, alignment pin; 3, vertical panel; 4, keeper; 5, pressure head; 6, pressure head connector; 7, pressing plate; 8, support column; 9, Compress Spring; 10, adjusting rod; 11, crossed countersunk head screw; 12, soket head cap screw; 13, bearing cap; 14, hex nut; 15, feed screw nut; 16, screw rod; 17, pilot hole.
The specific embodiment
Be the thick finish-milling fixture for processing in a kind of novel engine camshaft bearing cover of the present utility model bottom surface as depicted in figs. 1 and 2, it comprises base plate 1, be located on base plate 1 for compressing the hold-down mechanism of bearing cap 13 and being located at the detent mechanism that bearing cap 13 is positioned on base plate 1, this detent mechanism comprises that end face is keeper 4 and at least two alignment pins 2 that head is sphere of plane, bearing cap 13 is placed on the plane of orientation that this keeper 4 forms with its side, the bottom surface of bearing cap 13 is positioned at the outside of fixture, the head of alignment pin 2 is against on the end face of bearing cap 13.
As shown in Figure 2, keeper 4 is arc, and keeper 4 adapts with the side of bearing cap 13, and the lateral dimension of its size and bearing cap 13 is suitable.Keeper 4 is fixed on base plate 1 by two crossed countersunk head screws 11, and its upper surface forms the lower locating surface in bearing cap 13 clamping process.In the present embodiment, alignment pin 2 is provided with two, and centered by the axis of two alignment pins 2 and bearing cap 13, line is arranged symmetrically with.Reliable in order to guarantee that bearing cap 13 adds man-hour position, a vertical panel 3 is installed in the middle of base plate 1, and is used for installing two alignment pins 2 at centre position and keeper 4 correspondence positions in these vertical panel 3 left sides.This fixture replaces strip plate to position with keeper 4 in conjunction with alignment pin 2, the contact surface of bearing cap 13 in clamping reduced greatly, realize the accurate clamping of bearing cap 13, and this clamp structure is simple, easy to operate, camshaft bearing bush seat working (machining) efficiency is high, and the employee who processes this product especially can operation on duty without training.
The hold-down mechanism of this fixture matches with keeper 4 and compresses bearing cap 13, bearing cap 13 is pressed on the plane of orientation that keeper 4 forms, as depicted in figs. 1 and 2, this hold-down mechanism comprises a support column 8, be set in the pressing plate 7 that parallels on support column 8 and with base plate 1, for regulating pressing plate 7 height and the adjusting rod 10 paralleling with support column 8 and being connected to columniform pressure head 5 on pressing plate 7 and that be positioned at keeper 4 tops, pressure head 5 is pressed on the side of bearing cap 13.Pressure head 5 is connected on pressing plate 7 by pressure head connector 6, and pressure head connector 6 passes pressing plate 7 and locks by hex nut 14.Because bearing cap 13 is guaranteeing that camshaft accurately rotates the accurate particularity of this part self, pressure head 5 adopts nylon to make, in case bearing cap 13 is produced to excessive permanent compressive strain in the time of clamping.
The bottom surface of pressing plate 7 is provided with the detent matching with adjusting rod 10, detent does not run through pressing plate 7, insert in detent pressing plate 7 is positioned by adjusting rod 10, thereby when the clamp nut on screwed support post 8, adjusting rod 10 can prevent that pressing plate 7 from rotating, and finally can guarantee that pressure head 5 compacted position on pressing plate 7 are accurate.
One end of pressing plate 7 is used for installing pressure head 5, and the other end is for location.Adjusting rod 10 is for regulating the height of pressing plate 7, be provided with the pilot hole 17 that allows adjusting rod 10 insert at the end face of base plate 1, a side at each adjusting rod 10 is provided with the screw-drive mechanism for driving adjusting rod 10 to move up and down, screw-drive mechanism comprises the screw rod 16 of the feed screw nut 15 being fixedly connected with the shaft of adjusting rod 10 and the vertical setting of engaging with feed screw nut 15, 16 rotations of screw rod, on base plate 1, be provided with the support for studdle 16, screw-drive mechanism is by the rotation of screw rod 16, drive feed screw nut 15 axially to move up and down along screw rod 16, thereby drive adjusting rod 10 to move up and down, pilot hole 17 is set to move linearly to guarantee adjusting rod 10.This screw-drive mechanism has improved the adjusting efficiency of adjusting rod 10, and this screw-drive mechanism also has auto-lock function, be moved upward to behind final position at adjusting rod 10, screw-drive mechanism can prevent that adjusting rod 10 from falling automatically, improves the reliability that pressing plate 7 is supported and located.
In addition, the detent of pressing plate 7 bottom surfaces is the elongate slots of extending along the length direction of pressing plate 7, to adapt to pressing plate 7 position adjustments in the horizontal direction.The cross section of adjusting rod 10 can be circular, square or rectangle, and corresponding pilot hole 17 is circular hole, square hole or rectangular opening.The size of detent on width equates with diameter or the width of adjusting rod 10, guarantees that location is reliable.
For fixing on lathe, this fixture is also provided with four soket head cap screws 12 to facilitate the fixing of whole fixture at the corner location of base plate 1, can change in time when excessive when excessive deformation or keeper 4 wear extenies occur pressure head in multiple clamping 5.
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 (7)
1. the thick finish-milling fixture for processing in novel engine camshaft bearing cover bottom surface, comprise base plate, base plate is provided with for the detent mechanism to bearing cap location with for compressing the hold-down mechanism of bearing cap, detent mechanism comprises that end face is keeper and at least two alignment pins that head is sphere of plane, bearing cap is placed in its side on the plane of orientation of keeper formation, the bottom surface of bearing cap is positioned at the outside of fixture, the head of alignment pin is against on the end face of bearing cap, hold-down mechanism comprises support column, be set in the pressing plate on support column and the adjusting rod for the height of pressing plate is regulated, it is characterized in that: the bottom surface of described pressing plate is provided with the detent matching with described adjusting rod,
Described fixture also comprises screw-drive mechanism, and screw-drive mechanism comprises the feed screw nut being fixedly connected with adjusting rod and the screw rod engaging with feed screw nut, and screw rod is supported on the set support of base, and base is provided with the pilot hole that allows adjusting rod insert.
2. the thick finish-milling fixture for processing in novel engine camshaft bearing cover according to claim 1 bottom surface, is characterized in that: described detent is the elongate slots of extending along described pressing plate length direction.
3. the thick finish-milling fixture for processing in novel engine camshaft bearing cover according to claim 1 and 2 bottom surface, is characterized in that: described keeper is arc.
4. the thick finish-milling fixture for processing in novel engine camshaft bearing cover according to claim 3 bottom surface, is characterized in that: described alignment pin is provided with two, and centered by the axis of two alignment pins and described bearing cap, line is arranged symmetrically with.
5. the thick finish-milling fixture for processing in novel engine camshaft bearing cover according to claim 4 bottom surface, it is characterized in that: described hold-down mechanism is also included in the columniform pressure head arranging on described pressing plate and be positioned at keeper top, and pressure head is pressed on the side of bearing cap.
6. the thick finish-milling fixture for processing in novel engine camshaft bearing cover according to claim 5 bottom surface, is characterized in that: described pressing plate be provided with for the elongated hole of described support column socket.
7. the thick finish-milling fixture for processing in novel engine camshaft bearing cover according to claim 6 bottom surface, it is characterized in that: described base plate is provided with a vertical panel, described alignment pin is arranged on the side of vertical panel, and described support column is vertically arranged on vertical panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320724440.2U CN203622001U (en) | 2013-11-15 | 2013-11-15 | Novel fixture for rough and fine milling of bottom surface of bearing cover of engine camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320724440.2U CN203622001U (en) | 2013-11-15 | 2013-11-15 | Novel fixture for rough and fine milling of bottom surface of bearing cover of engine camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203622001U true CN203622001U (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320724440.2U Expired - Fee Related CN203622001U (en) | 2013-11-15 | 2013-11-15 | Novel fixture for rough and fine milling of bottom surface of bearing cover of engine camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203622001U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345503A (en) * | 2015-12-10 | 2016-02-24 | 渝北区千里马模具加工厂 | Fixing device for stepped shaft sleeve |
| CN106002372A (en) * | 2016-06-21 | 2016-10-12 | 苏州骏发精密机械有限公司 | Positioning type clamping jig |
| CN106002371A (en) * | 2016-06-21 | 2016-10-12 | 苏州骏发精密机械有限公司 | Horizontal type clamping jig |
| CN108746726A (en) * | 2018-04-08 | 2018-11-06 | 中国航发航空科技股份有限公司 | Aero-engine air inlet guide vane and rocker arm composition drilling equipment and application method |
| CN111993314A (en) * | 2020-08-31 | 2020-11-27 | 福建兵工装备有限公司 | Clamping device for machining reducer seat |
| CN112775898A (en) * | 2020-12-07 | 2021-05-11 | 北京星航机电装备有限公司 | Loose joint bearing assembly tool |
| CN113579809A (en) * | 2021-08-02 | 2021-11-02 | 天润工业技术股份有限公司 | Large-scale engine bearing cap processing frock |
-
2013
- 2013-11-15 CN CN201320724440.2U patent/CN203622001U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345503A (en) * | 2015-12-10 | 2016-02-24 | 渝北区千里马模具加工厂 | Fixing device for stepped shaft sleeve |
| CN105345503B (en) * | 2015-12-10 | 2017-06-23 | 渝北区千里马模具加工厂 | For the fixing device of ladder axle sleeve |
| CN106002372A (en) * | 2016-06-21 | 2016-10-12 | 苏州骏发精密机械有限公司 | Positioning type clamping jig |
| CN106002371A (en) * | 2016-06-21 | 2016-10-12 | 苏州骏发精密机械有限公司 | Horizontal type clamping jig |
| CN108746726A (en) * | 2018-04-08 | 2018-11-06 | 中国航发航空科技股份有限公司 | Aero-engine air inlet guide vane and rocker arm composition drilling equipment and application method |
| CN111993314A (en) * | 2020-08-31 | 2020-11-27 | 福建兵工装备有限公司 | Clamping device for machining reducer seat |
| CN112775898A (en) * | 2020-12-07 | 2021-05-11 | 北京星航机电装备有限公司 | Loose joint bearing assembly tool |
| CN113579809A (en) * | 2021-08-02 | 2021-11-02 | 天润工业技术股份有限公司 | Large-scale engine bearing cap processing frock |
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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: 20140604 Termination date: 20211115 |