CN203371297U - Fixture for machining small-end hole and combination surface of connection rod - Google Patents
Fixture for machining small-end hole and combination surface of connection rod Download PDFInfo
- Publication number
- CN203371297U CN203371297U CN201320404410.3U CN201320404410U CN203371297U CN 203371297 U CN203371297 U CN 203371297U CN 201320404410 U CN201320404410 U CN 201320404410U CN 203371297 U CN203371297 U CN 203371297U
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- China
- Prior art keywords
- connecting rod
- clamp body
- fixture
- faying face
- end hole
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- 238000003754 machining Methods 0.000 title abstract description 7
- 208000004141 microcephaly Diseases 0.000 claims description 34
- 238000003825 pressing Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 13
- 230000008093 supporting effect Effects 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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Abstract
The utility model discloses a fixture for machining a small-end hole and a combination surface of a connection rod. The fixture comprises a connection machine tool workbench and a fixture body of a connection rod body. A positioning element and a clamping element which are used for fixing the small-end hole, to be machined, of the connection rod and the combination surface, to be machined, of the connection rod are installed on the fixture body. Due to the adoption of the technical scheme, the fixture for connecting rod body machining is simple in structure and wide in using range; the small-end hole and the combination surface of thea connection rod which are machined on different plane-coordinate systems are associated through a bushing alignment hole, and accordingly requirements of all sizes are satisfied; because the two elements of the combination surface and the small-end hole can be machined through once clamping, subsidiary time is saved and production efficiency is improved.
Description
Technical field
The utility model relates to a kind of processing connecting rod small end hole and faying face fixture.
Background technology
Part high speed high-power diesel engine connecting rod is by connecting rod cap, connecting rod shank, large end three parts of connecting rod shank form, wherein, comprise respectively again: big end surface 101, Bolt to position face 102, faying face 103 microcephaly's end faces 201, microcephaly hole 202, wherein, the faying face of the relative connecting rod shank in microcephaly hole on shaft has the depth of parallelism and range accuracy requirement, to guarantee that for final connecting rod is large, the depth of parallelism in microcephaly hole and range accuracy requirement, if work in-process can not guarantee greatly, the depth of parallelism in microcephaly hole and range accuracy requirement, can cause connecting rod to produce flexural deformation when diesel engine moves, affect the compression ratio of diesel engine, affect the diesel engine serviceability.The connecting rod shank structure as shown in Figure 1.
Existing processing method is: process respectively at twice faying face and microcephaly hole, first the connecting rod shank faying face is worked into to final size, then on vertical machining centre, use fixture with processing shaft microcephaly hole, faying face location.The locate mode of processing connecting rod small end hole is: the faying face location with connecting rod shank, make the microcephaly hole upward, and connecting rod is pressed on fixture.
Because the perpendicularity of the relative workbench of fixture locating surface is had relatively high expectations, the perpendicularity of the relative workbench of vertical machining centre main shaft requires also higher, is difficult for guaranteeing the depth of parallelism of the relative faying face in connecting rod shank microcephaly hole.And the clamping workpiece inconvenience, labor strength is large, and efficiency is low.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, and a kind of fixture used on horizontal Machining centers is provided, and utilizes machine tool rotary working table, and clamped one time processes shaft faying face and microcephaly hole.
It is as follows that the utility model solves the problems of the technologies described above taked technical scheme:
A kind of processing connecting rod small end hole and faying face fixture, comprise: the clamp body of connecting machine tool workbench and connecting rod shank (1), wherein, setting element and clamping element are installed on clamp body, wherein, described clamp body (1) is T-shaped structure, 2 positioning keys (12) are installed under described clamp body (1), and be pressed in the groove of clamp body lower plane with screw (13), wherein, expose in the T-slot that the clamp body lower plane partly sticks into platen, and also be provided with the nut head of tommyhead bolt (9) in described T-slot inside, the other end of described tommyhead bolt (9) is injected in the screw of clamp body, and also be provided with nut (10) and the pad (11) that clamp body is pressed on platen.
Further, preferably structure is, also is provided with 5 supportings (15) on described clamp body, and described supporting (15) is supported in end face and the side of connecting rod, locates five frees degree of limiting rod body on clamp body for connecting rod shank.
Further, preferred structure is also be provided with backing pin (2) on described clamp body, and backing pin (2) gear to be on the connecting-rod bolts locating surface.
Further, preferably structure is, also is provided with pressing plate (4) and microcephaly's pressing plate (14) on described clamp body upper, wherein, pressure head (3) is housed on pressing plate, and the pressure head material is copper.
Further, preferred structure is also to be provided with clamp nut (5) and stud (6), it compresses described pressing plate (4) and microcephaly's pressing plate (14) with described connecting rod shank, and, also being provided with jam nut, it is fixed on described stud (6) on clamp body.
Further, preferred structure is, in the central authorities of described clamp body (1), also is provided with lining (16), and described lining (16) will process faying face and process the microcephaly hole and link together.
After the utility model has been taked such scheme, this connecting rod shank fixture for processing is simple in structure, the scope of application is wide, two sizes to not processing at same plane coordinate system by the lining alignment holes connect, thereby guarantee each dimensional requirement, and clamped one time can process faying face and two, microcephaly hole key element, while having saved beam worker, has improved production efficiency.
Other features and advantages of the utility model will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the utility model.The purpose of this utility model and other advantages can realize and obtain by specifically noted structure in the specification write, claims and accompanying drawing.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in detail, so that above-mentioned advantage of the present utility model is clearer and more definite.
Fig. 1 is the structural representation of connecting rod of the prior art;
Fig. 2 is the side structure schematic diagram of connecting rod of the prior art;
Fig. 3 is the structural representation that the utility model processing connecting rod small end hole and faying face are used fixture;
Fig. 4 is the side structure schematic diagram that the utility model processing connecting rod small end hole and faying face are used fixture;
Fig. 5 is the structural representation that the utility model processing connecting rod small end hole and faying face are used fixture.
The specific embodiment
Below in conjunction with specific embodiment, the utility model is described in detail.
Wherein, the structure of connecting rod is as shown in 1 and 2, and wherein, connecting rod shank is provided with the assemblies such as end surface 101, Bolt to position face 102, faying face 103 microcephaly's end faces 201, microcephaly hole 202.
Wherein, Fig. 3, Fig. 4, Fig. 5 has disclosed respectively fixture of the present invention, wherein, main structure is as follows: a kind of processing connecting rod small end hole and faying face fixture, comprise: the clamp body 1 of connecting machine tool workbench and connecting rod shank wherein, is equipped with setting element and clamping element on clamp body, wherein, described clamp body 1 is T-shaped structure.
Further, preferred structure is, at described clamp body, 2 positioning keys 12 are installed for 1 time, and with screw 13, be pressed in the groove of clamp body lower plane, wherein, expose in the T-slot that the clamp body lower plane partly sticks into platen, and also be provided with the nut head of tommyhead bolt 9 in described T-slot inside, the other end of described tommyhead bolt 9 is injected in the screw of clamp body, and also is provided with nut 10 and the pad 11 that clamp body is pressed on platen.
Further, preferably structure is, also is provided with 5 supportings 15 on described clamp body, and described supporting 15 is supported in end face and the side of connecting rod, locates five frees degree of limiting rod body on clamp body for connecting rod shank.
Further, preferred structure is also be provided with backing pin 2 on described clamp body, and backing pin 2 gears to be on the connecting-rod bolts locating surface.
Further, preferably structure is, on described clamp body, also is provided with on pressing plate 4 and microcephaly's pressing plate 14, wherein, pressure head 3 is housed on pressing plate, and the pressure head material is copper.
Further, preferably structure is, also is provided with clamp nut 5 and stud 6, and it compresses described pressing plate 4 and microcephaly's pressing plate 14 with described connecting rod shank, and, also being provided with jam nut, it is fixed on described stud 6 on clamp body.
Further, preferred structure is, in the central authorities of described clamp body 1, also is provided with lining 16, and described lining 16 will process faying face and process the microcephaly hole and link together.
After the utility model has been taked such scheme, this connecting rod shank fixture for processing is simple in structure, the scope of application is wide, two sizes to not processing at same plane coordinate system by the lining alignment holes connect, thereby guarantee each dimensional requirement, and clamped one time can process faying face and two, microcephaly hole key element, while having saved beam worker, has improved production efficiency.
Wherein, more particularly, clamp body 1 is for connecting machine tool workbench and connecting rod shank, T-shaped structure, and the clamp body lower plane is connected with platen, and all setting elements and clamping element all are arranged on clamp body.2 positioning keys 12 are installed under clamp body, are pressed on screw 13 in the groove of clamp body lower plane, expose in the T-slot that the clamp body lower plane partly sticks into platen, positioning key is clamp body to be installed on platen have correct position.The nut head of tommyhead bolt 9 exposes the clamp body lower flat portion and divides in the T-slot of putting into workbench, and other end is injected in the screw of clamp body, by nut 10 and pad 11, clamp body is pressed on to platen.5 supportings 15 are supported in end face and the side of connecting rod, for connecting rod shank, on clamp body, locate, and five frees degree of limiting rod body, and respectively each benchmark is had to required precision.Backing pin 2 is to keep off on the connecting-rod bolts locating surface, and an effect is that the limiting rod body moves left and right, an one-movement-freedom-degree of limiting rod body, and so far, the six-freedom degree of connecting rod shank is limited fully, and connecting rod shank is correctly located on fixture.Another effect of backing pin is the program zero point as the processing faying face.On pressing plate 4 and microcephaly's pressing plate 14, pressure head 3 is housed, the pressure head material is copper, and effect is to prevent from the connecting rod shank surface is weighed wounded.The effect of clamp nut 5 and stud 6 is that pressing plate 4 and microcephaly's pressing plate 14 are pressed on shaft, thereby connecting rod shank is compressed.Jam nut 7 effects are that stud 6 is fixed on clamp body.Lining 16 is vital parts, and its effect is that processing faying face and processing microcephaly hole are connected, and as the benchmark in processing microcephaly hole, thereby guarantees that the microcephaly hole is to the faying face dimension precision requirement.
Wherein, the operation principle of assurance precision of the present utility model is:
Fixture is arranged on platen, by two positioning keys 12, is inserted into location in the T-shaped groove of horizontal Machining centers workbench, and with tommyhead bolt 9 clamping devices.Before connecting rod is arranged on fixture, machine tool chief axis finds the program zero point of processing connecting rod, and the procedure that mills faying face is the side bus of the backing pin 2 of gear on the connecting-rod bolts locating surface zero point, for processing joint surface of connection rod, guarantees size 95 ± 0.02; The program in processing microcephaly hole is zero point: platen is driven to the fixture half-twist, make machine tool chief axis aim at the microcephaly hole, lining 16 holes on the centering fixture, determine the program zero point in processing microcephaly hole, the side bus of the relative backing pin 2 in lining 16Kong center has the requirement of printing actual value, to mill faying face and boring microcephaly hole connects by this actual value, be used for guaranteeing size 660 ± 0.03, thereby finally guarantee to require 755 ± 0.05 in final precision.
In addition, under another mode of operation:
First finish-milling faying face, then platen turns clockwise 90 °, according to the program zero point of setting with walk coordinate dimension processing microcephaly hole, the rotating accuracy of lathe B axle is: 0.001 °, be the rotating accuracy of workbench, guarantee the depth of parallelism by the high-precision rotary precision of this lathe here.Precision analysis is as follows: after the processing joint surface of connection rod, platen turns clockwise 90 °, and the depth of parallelism of the relative faying face in hole processed in connecting rod gauge 155 scopes is:
155×tanθ=0.003
In formula, θ is 0.001 ° of worktable rotary angular error, from result of calculation, can find out the flat shape degree 0.03 that is far smaller than the connecting rod requirement.
More particularly, the utility model can utilize the rotating accuracy of rotary table to guarantee depth of parallelism requirement; And two sizes will not processing at same plane coordinate system by the lining alignment holes connect, thereby guarantee each dimensional requirement.
The utlity model has following effect: 1 is simple in structure, the scope of application is wide: this connecting rod shank fixture for processing is simple in structure, the scope of application is wide, two sizes to not processing at same plane coordinate system by the lining alignment holes connect, thereby guarantee each dimensional requirement, can promote the solution Similar Problems.
2 is easy to operate, and efficiency is high: clamped one time can process faying face and two, microcephaly hole key element, while having saved beam worker, has improved production efficiency.
3 processing parts precision are high, steady quality: the depth of parallelism of part guarantees by lathe, has got rid of human factor, steady quality.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although with reference to previous embodiment, the utility model is had been described in detail, for a person skilled in the art, its technical scheme that still can put down in writing aforementioned each embodiment is modified, or part technical characterictic wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. process connecting rod small end hole and faying face fixture for one kind, it is characterized in that, comprise: the clamp body of connecting machine tool workbench and connecting rod shank (1), wherein, setting element and the clamping element of fixing processed connecting rod small end hole and faying face are installed on clamp body, 2 positioning keys (12) are installed under described clamp body (1), and be pressed in the groove of clamp body lower plane with screw (13), wherein, expose in the T-slot that the clamp body lower plane partly sticks into platen, and also be provided with the nut head of tommyhead bolt (9) in described T-slot inside, the other end of described tommyhead bolt (9) is injected in the screw of clamp body, and also be provided with nut and the pad that clamp body is pressed on platen.
2. processing connecting rod small end hole according to claim 1 and faying face fixture, it is characterized in that, also be provided with 5 supportings (15) on described clamp body, described supporting (15) is supported in end face and the side of connecting rod, locate five frees degree of limiting rod body on clamp body for connecting rod shank.
3. processing connecting rod small end hole according to claim 1 and faying face fixture, is characterized in that, also is provided with backing pin (2) on described clamp body, and backing pin (2) gear is on the connecting-rod bolts locating surface.
4. processing connecting rod small end hole according to claim 1 and faying face fixture, is characterized in that, also is provided with pressing plate (4) and microcephaly's pressing plate (14) on described clamp body upper, wherein, pressure head (3) is housed on pressing plate, and the pressure head material is copper.
5. processing connecting rod small end hole according to claim 4 and faying face fixture, it is characterized in that, also be provided with clamp nut (5) and stud, it compresses described pressing plate (4) and microcephaly's pressing plate (14) with described connecting rod shank, and, also be provided with jam nut, it is fixed on described stud on clamp body.
6. processing connecting rod small end hole according to claim 1 and faying face fixture, is characterized in that, in the central authorities of described clamp body (1), also is provided with lining (16), and described lining (16) will process faying face and processing microcephaly hole links together.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320404410.3U CN203371297U (en) | 2013-07-09 | 2013-07-09 | Fixture for machining small-end hole and combination surface of connection rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320404410.3U CN203371297U (en) | 2013-07-09 | 2013-07-09 | Fixture for machining small-end hole and combination surface of connection rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203371297U true CN203371297U (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320404410.3U Expired - Fee Related CN203371297U (en) | 2013-07-09 | 2013-07-09 | Fixture for machining small-end hole and combination surface of connection rod |
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|---|---|
| CN (1) | CN203371297U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114633011A (en) * | 2022-05-05 | 2022-06-17 | 中国航发航空科技股份有限公司 | Clamp device and alignment method for electron beam welding blind welding |
-
2013
- 2013-07-09 CN CN201320404410.3U patent/CN203371297U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114633011A (en) * | 2022-05-05 | 2022-06-17 | 中国航发航空科技股份有限公司 | Clamp device and alignment method for electron beam welding blind welding |
| CN114633011B (en) * | 2022-05-05 | 2023-11-14 | 中国航发航空科技股份有限公司 | Clamp device for electron beam welding blind welding and alignment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |
|
| CU01 | Correction of utility model | ||
| CU01 | Correction of utility model |
Correction item: Termination upon expiration of patent Correct: Revocation of Patent Expiration and Termination False: On July 25, 2023, the expiration and termination of the 39-volume 3001 patent Number: 30-01 Volume: 39 |
|
| 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: 20140101 |