CN208801084U - A kind of fixture for machining high-precision cam assembly - Google Patents
A kind of fixture for machining high-precision cam assembly Download PDFInfo
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- CN208801084U CN208801084U CN201820292584.8U CN201820292584U CN208801084U CN 208801084 U CN208801084 U CN 208801084U CN 201820292584 U CN201820292584 U CN 201820292584U CN 208801084 U CN208801084 U CN 208801084U
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Abstract
The utility model provides a kind of fixture for machining high-precision cam assembly, including bottom plate, which is provided with the first station clamp and second station fixture；First station clamp includes the first positioning mechanism and the first clamping device, first positioning mechanism includes push plate, first clamping device is located at push plate two sides, including oil cylinder mandril, link block is vertically arranged between oil cylinder mandril and push plate, it is provided with connecting rod above link block, the first pressing plate is equipped at the top of oil cylinder mandril, is equipped with locating rod inside the connecting rod of side；Second station fixture includes positioning plate, and positioning plate side is fixed with lever oil cylinder, and the second pressing plate is fixed at the top of lever oil cylinder, and lower section is provided with brass pressure head by connecting pin.The fixture for machining high-precision cam assembly has structure simple, and positioning accuracy is high, the advantages that clamping is efficient, and clamping deformation is small can reduce manufacturing procedure, it avoids multiple clamping from causing product processing unstable, is suitable for producing high-precision cam assembly.
Description
Technical field
The utility model relates to clamp art more particularly to a kind of folders for machining high-precision cam assembly
Tool.
Background technique
Camshaft is a key activities component in piston engine, its effect is to control the unlatching and closure of valve
Movement, and cam assembly is the fixing piece that camshaft is fixed in automobile engine.Although rushing cam in engine four
The revolving speed of axis be crankshaft half (two rush camshaft in engine revolving speed it is identical as crankshaft), but its revolving speed under normal conditions
It is still very high, and need to bear very big torsion.Therefore cam assembly (camshaft-bearing cap and the camshaft of fixed camshaft
Bearing block, hereinafter referred to as cam assembly) equally critical positions are occupied in engine design process.
Cam assembly (Fig. 1) in the prior art is usually occurred by camshaft holder and camshaft cover fit form, is passed through
Positioning pin links together.Cam assembly makes its camshaft that can only turn round axis direction along it by bearing and cam axis connection
Do rotary motion.
Utility model content
Above-mentioned to solve the problems, such as, the purpose of this utility model is to provide one kind to be used for machining high-precision camshaft
The fixture of component.The fixture for machining high-precision cam assembly has structure simple, and positioning accuracy is high, and clamping is high
Effect, and the advantages that clamping deformation is small, manufacturing procedure can be reduced, avoids multiple clamping from causing product processing unstable, is suitable for
Produce high-precision cam assembly.
To achieve the above purpose, the technical solution of the present invention is:
A kind of fixture for machining high-precision cam assembly, which is characterized in that including bottom plate, be arranged on the bottom plate
There are the first station clamp and second station fixture；
First station clamp includes the first positioning mechanism and the first clamping device, and the first positioning mechanism is pushed away including one
Plate, the base plate interior below push plate are arranged with two linear bearings, and two movement registration arms run through push plate and linear bearing vertically, described
It is provided with locating piece on the outside of linear bearing, first clamping device is located at push plate two sides, including oil cylinder mandril, oil cylinder mandril bottom
Portion is set to base plate interior, and top is located above bottom plate, is vertically arranged with link block between oil cylinder mandril and push plate, on link block
Side is provided with connecting rod, and the first pressing plate, one end of first pressing plate and oil cylinder mandril and company are vertically installed at the top of oil cylinder mandril
Bar passes through pin connection, is additionally provided with locating rod inside the connecting rod of side, the locating rod is parallel with bottom plate, first pressing plate
The other end is corresponding up and down with locating piece.Shown first clamping device forms offset slider-crank mechanism, and makes in clamping process
Workpiece uniform force reduces clamping deformation, to guarantee work pieces process stability.
The second station fixture includes positioning plate, is set on bottom plate, and dowel hole, positioning plate are offered on positioning plate
Side is fixed with lever oil cylinder, and second pressing plate one end is fixed at the top of lever oil cylinder by connecting pin, second pressing plate and bottom
Plate is parallel, and connecting pin is provided with brass pressure head below the second pressing plate other end.Realize that compression is rapid by lever oil cylinder,
It stabilizes；Brass pressure head is used at stress point, brass material is it is possible to prevente effectively from phenomena such as weighing workpiece wounded.
The shown fixture for machining high-precision cam assembly can reduce manufacturing procedure, and multiple clamping is avoided to cause to produce
Product processing is unstable.
Further, alloy pressure head is provided in the locating piece and the first pressing plate.Due to locating piece and the first pressing plate by
Force is spray face, and there is uneven phenomenon in spray face, therefore alloy pressure head is used at stress point, to guarantee work
Uniform force in part compaction process.
Further, the alloy pressure head in the ipsilateral locating piece and the first pressing plate is oppositely arranged.
Further, the alloy pressure head includes fixed block, flexible connection mechanism and pressure head, and the flexible connection mechanism connects
Connect fixed block and pressure head.By clamping face be black skin, rough-cast tolerance is big, surface irregularity, will using alloy pressure head
Stress point is designed to self-adjustable point, and product is made to realize automatic capturing in clamping process, and complete complete compression product improves it
Positioning accuracy, pressure head bottom, which is designed as tooth-shape structure, can be further reduced clamp error.
Further, there is gap between second pressing plate and brass pressure head.Since lever oil cylinder is rotating down pressing mistake
Journey, thus at the second pressure head be equipped with gap, formed swinging structure, make its pushing be stress vertically downward, realize pushing process
Middle automatic capturing tilts to prevent stress tilting band movable property product in compaction process, reduces clamping deformation amount.
Further, first positioning mechanism and the first clamping device have been connected through a screw thread oil cylinder.Using oil cylinder,
Avoid manual clamping error and discontinuity phenomenon.
Further, the oil cylinder is located at below bottom plate.
Further, round positioning pin or diamond positioning pin are installed in the dowel hole.Positioning pin is using round positioning
Pin and diamond positioning pin Combination Design, high-precision size and high position degree require design, realize product orientation stability.Positioning
Pin uses Cr12MoV material, reaches HRC58 ~ 60 by its hardness of quenching heat treatment, guarantees wearability and dimensional stability.
The utility model has the beneficial effects that:
A kind of fixture for machining high-precision cam assembly described in the utility model has structure simple, positioning
The advantages that precision is high, and clamping is efficient, and clamping deformation is small, can reduce manufacturing procedure, avoid multiple clamping that product is caused to be processed
It is unstable, it is suitable for producing high-precision cam assembly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of cam assembly.
Fig. 2 is a kind of structural representation of the fixture for machining high-precision cam assembly provided by the utility model
Figure.
Fig. 3 is the structural schematic diagram of the first clamping device provided by the utility model.
Fig. 4 is the structural schematic diagram of second station fixture provided by the utility model.
Wherein: 1 is bottom plate, and 2 be the first station clamp, and 20 be the first positioning mechanism, and 200 be push plate, and 201 be linear axis
It holds, 202 be movement registration arm, and 203 be locating piece, and 21 be the first clamping device, and 210 be oil cylinder mandril, and 211 be link block, 212
It is the first pressing plate for connecting rod, 213,214 be locating rod, and 22 be alloy pressure head, and 23 be oil cylinder, and 3 be second station fixture, and 30 be fixed
Position plate, 31 be dowel hole, and 32 be lever oil cylinder, and 33 be the second pressing plate, and 34 be brass pressure head, and 35 be gap.
Specific embodiment
- Fig. 4 referring to fig. 2 is a kind of fixture for machining high-precision cam assembly described in the utility model, special
Sign is, including bottom plate 1, and the first station clamp 2 and second station fixture 3 are provided on the bottom plate 1.
First station clamp 2 includes the first positioning mechanism 20 and the first clamping device 21, the first positioning mechanism 20 packet
A push plate 200 is included, 1 internal sleeve of bottom plate of 200 lower section of push plate is equipped with two linear bearings 201, and two movement registration arms 202 run through vertically
Push plate 200 and linear bearing 201 are provided with locating piece 203, first clamping device 21 on the outside of the linear bearing 201
In 200 two sides of push plate, including oil cylinder mandril 210,210 bottom of oil cylinder mandril is set to inside bottom plate 1, and top is located on bottom plate 1
Side, is vertically arranged with link block 211, connecting rod 212 is provided with above link block 211 between oil cylinder mandril 210 and push plate 200, oil
The first pressing plate 213, one end of first pressing plate 213 and oil cylinder mandril 210 and connecting rod are vertically installed at the top of cylinder mandril 210
212 pass through pin connection, are additionally provided with locating rod 214 inside the connecting rod 212 of side, the locating rod 214 is parallel with bottom plate 1, institute
The other end for stating the first pressing plate 213 is corresponding with about 203 locating piece.
The working principle of first station clamp 2 are as follows: when workpiece is dismantled, oil cylinder 23 is in ejection state, oil cylinder 23 and push plate
200 are threadedly coupled, and push plate 200 and movement registration arm 202 are locked by bolt, between movement registration arm 202 and linear bearing 201
Gap cooperation, play the guiding role, and oil cylinder 23 is flexible to drive movement registration arm to stretch back and forth.When workpiece is dismantled, at movement registration arm 202
Positioning action is played in stretching state, and when Workpiece clamping, movement registration arm 202 is in contraction state, to not influence to process work
Part.
The second station fixture 3 includes positioning plate 30, is set on bottom plate 1, offers dowel hole on positioning plate 30
31,30 side of positioning plate is fixed with lever oil cylinder 32, and 32 top of lever oil cylinder is fixed on by connecting pin in 33 one end of the second pressing plate,
Second pressing plate 33 is parallel with bottom plate 1, and connecting pin is provided with brass pressure head 34 below 33 other end of the second pressing plate.
Further, alloy pressure head 22 is provided in the locating piece 203 and the first pressing plate 213.
Further, the alloy pressure head 22 in the ipsilateral locating piece 203 and the first pressing plate 213 is oppositely arranged.
Further, the alloy pressure head 22 includes fixed block, flexible connection mechanism and pressure head, the flexible connection mechanism
Connection fixing block and pressure head.
Further, there is gap between second pressing plate 33 and brass pressure head 34.
Further, first positioning mechanism 20 and the first clamping device 21 have been connected through a screw thread oil cylinder 23.
Further, the oil cylinder 23 is located at 1 lower section of bottom plate.
Further, round positioning pin or diamond positioning pin are installed in the dowel hole 31.
A kind of fixture for machining high-precision cam assembly described in the utility model has structure simple, positioning
The advantages that precision is high, and clamping is efficient, and clamping deformation is small, can reduce manufacturing procedure, avoid multiple clamping that product is caused to be processed
It is unstable, it is suitable for producing high-precision cam assembly.
It should be noted that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application.Although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to reality
It is modified or replaced equivalently with novel technical solution, it, should all without departing from the range of technical solutions of the utility model
Cover in the scope of the claims of the utility model.
Claims (8)
1. a kind of fixture for machining high-precision cam assembly, which is characterized in that including bottom plate (1), on the bottom plate (1)
It is provided with the first station clamp (2) and second station fixture (3)；
First station clamp (2) includes the first positioning mechanism (20) and the first clamping device (21), the first positioning mechanism
It (20) include a push plate (200) that bottom plate (1) internal sleeve below push plate (200) is equipped with two linear bearings (201), two activities are fixed
Position bar (202) runs through push plate (200) and linear bearing (201) vertically, is provided with locating piece on the outside of the linear bearing (201)
(203), first clamping device (21) is located at push plate (200) two sides, including oil cylinder mandril (210), oil cylinder mandril (210) bottom
Portion is set to bottom plate (1) inside, and top is located above bottom plate (1), is vertically arranged between oil cylinder mandril (210) and push plate (200)
Have link block (211), be provided with connecting rod (212) above link block (211), is vertically installed with first at the top of oil cylinder mandril (210)
Pressing plate (213), one end and oil cylinder mandril (210) of first pressing plate (213) and connecting rod (212) pass through pin connection, side
It is additionally provided with locating rod (214) inside connecting rod (212), the locating rod (214) is parallel with bottom plate (1), first pressing plate
(213) the other end and locating piece (203) are corresponding up and down；
The second station fixture (3) includes positioning plate (30), is set on bottom plate (1), and positioning plate offers positioning on (30)
Pin hole (31), positioning plate (30) side are fixed with lever oil cylinder (32), and thick stick is fixed on by connecting pin in the second pressing plate (33) one end
At the top of rod oil cylinder (32), second pressing plate (33) is parallel with bottom plate (1), passes through connecting pin below the second pressing plate (33) other end
It is provided with brass pressure head (34).
2. the fixture according to claim 1 for machining high-precision cam assembly, which is characterized in that the locating piece
(203) and in the first pressing plate (213) alloy pressure head (22) are provided with.
3. the fixture according to claim 2 for machining high-precision cam assembly, which is characterized in that the locating piece
(203) the alloy pressure head (22) and in the first pressing plate (213) is oppositely arranged.
4. the fixture according to claim 2 for machining high-precision cam assembly, which is characterized in that the alloy pressure
Head (22) includes fixed block, flexible connection mechanism and pressure head, the flexible connection mechanism connection fixing block and pressure head.
5. the fixture according to claim 1 for machining high-precision cam assembly, which is characterized in that second pressure
There are gap (35) between plate (33) and brass pressure head (34).
6. the fixture according to claim 1 for machining high-precision cam assembly, which is characterized in that described first is fixed
Position mechanism (20) and the first clamping device (21) have been connected through a screw thread oil cylinder (23).
7. the fixture according to claim 6 for machining high-precision cam assembly, which is characterized in that the oil cylinder
(23) it is located at below bottom plate (1).
8. the fixture according to claim 1 for machining high-precision cam assembly, which is characterized in that the positioning pin
Round positioning pin or diamond positioning pin are installed in hole (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820292584.8U CN208801084U (en) | 2018-03-02 | 2018-03-02 | A kind of fixture for machining high-precision cam assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820292584.8U CN208801084U (en) | 2018-03-02 | 2018-03-02 | A kind of fixture for machining high-precision cam assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208801084U true CN208801084U (en) | 2019-04-30 |
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ID=66227030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820292584.8U Active CN208801084U (en) | 2018-03-02 | 2018-03-02 | A kind of fixture for machining high-precision cam assembly |
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| CN (1) | CN208801084U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111069938A (en) * | 2019-12-10 | 2020-04-28 | 苏州臻嘉辰精密机械有限公司 | Double-station brake disc support clamp |
-
2018
- 2018-03-02 CN CN201820292584.8U patent/CN208801084U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111069938A (en) * | 2019-12-10 | 2020-04-28 | 苏州臻嘉辰精密机械有限公司 | Double-station brake disc support clamp |
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