CN201320690Y - Crankshaft slotting bidirectional positioning fixture - Google Patents
Crankshaft slotting bidirectional positioning fixture Download PDFInfo
- Publication number
- CN201320690Y CN201320690Y CNU2008202165263U CN200820216526U CN201320690Y CN 201320690 Y CN201320690 Y CN 201320690Y CN U2008202165263 U CNU2008202165263 U CN U2008202165263U CN 200820216526 U CN200820216526 U CN 200820216526U CN 201320690 Y CN201320690 Y CN 201320690Y
- Authority
- CN
- China
- Prior art keywords
- support abutment
- crankshaft
- positioning fixture
- base
- right support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a crankshaft slotting bidirectional positioning fixture. The upper plane of a base is taken as the installation benchmark of a left support and a right support. The right support and the left support are matched with the base through a coaxially arranged key. The live centre assembled on the left end face of the right support and the flat cylinder connected with the external end face form an axial adjustable structure. The centre assembled on the right end face of the left support is of a dead centre. The height of the two coaxial relative centers is the same. A transition support is arranged on the left of the live centre and below the journal of the crankshaft to be slotted. The horizontal deflection side of the crank of the crankshaft enables the slot to be milled to face upward. A limiting pillar is arranged at the bottom of the crank and upright stands against the outer diameter. The upper part of the crank is tightly pressed by the pressing end of a pneumatic clamping mechanism. The utility model has the advantages that the structure is adjustable, the positioning is accurate and reliable and the positioning fixture is especially suitable for batch production.
Description
Technical field
The utility model relates to a kind of machine cut clamp for machining, particularly a kind of axle head groove milling positioning fixture.
Background technology
Bent axle is the critical component that engine transmits moment of torsion, and its axle head is provided with the keyway with the combination that replaces the spare parts mutually.The complex structure of the conventional axle of bent axle, location and installation is difficult during milling axle head keyway, to operative employee's specification requirement height.Prior art adopts the Double Tops needle construction can easily realize the axially accurate location of bent axle, but the difficult accurately location of the crank throw corner of bent axle has only the manual adjustment method of employing could realize the location, and whole operation is long man-hour, installation accuracy is subjected to man's activity bigger, does not meet the specification requirement of batch process.
The utility model content
The utility model is primarily aimed at the deficiencies in the prior art, proposes a kind of simple in structure, easy to operate, accurate positioning, clamps bidirectional positioning fixture for crankshaft milling groove efficiently.
The utility model is achieved through the following technical solutions technical goal.
Bidirectional positioning fixture for crankshaft milling groove, it comprises flat cylinder, right support abutment, live centre, transition supporting, left support abutment, pneumatic pinch mechanism, base, spacing pillar and key.The plane is left support abutment, the common reference for installation of right support abutment on the described base, and right support abutment and left support abutment are connected by key and the base that is coaxially set.The flat cylinder 1 that the equipped live centre in described right support abutment left side is connected with the outer face is formed axial adjustable structure, and the equipped thimble in left support abutment right side is slow-witted thimble, and two coaxial relative thimbles are contour.Its improvements are: the left end of described live centre and be positioned at bent axle and treat that the groove milling axle journal has transition supporting, crank throw horizontal deflection one side of bent axle makes groove to be milled up, the crank throw bottom is provided with the spacing pillar of perpendicular top external diameter, and its top is compressed by the end that compresses of pneumatic pinch mechanism.
In the said structure, the support height of transition supporting is than the low 0.20～0.50mm of live centre support height, and when live centre acted on crankshaft end, transition supporting promptly lost supporting role temporarily.Spacing pillar with screw thread adjustable structure, except that installing the adjustment first, any adjustment is not done in all the other installations, guarantees with batch bent axle milling key groove under same deflection angle.
The utility model compared with prior art has following good effect:
1, location, supporting and clamp mechanism are simple in structure, easy to manufacture;
2, with the crank throw of spacing pillar supporting deflection, the location is reliable, accurate, high conformity;
3, the adjustable diameter and screw adjusting structure of spacing pillar is except that installing the adjustment first, and all the other are location and installation, and location and installation is short unproductive time, the production efficiency height.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the side view of Fig. 1
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Bidirectional positioning fixture for crankshaft milling groove shown in the drawings, it comprises flat cylinder 1, right support abutment 2, live centre 3, transition supporting 4, left support abutment 5, pneumatic pinch mechanism 6, base 7, spacing pillar 8 and key 9.Right support abutment 2 and left support abutment 5 are fixedly connected on respectively on the base 7 and with the key 9 that is coaxially set according to the length of processed bent axle and make axial location.The flat cylinder 1 that the equipped live centre 3 in right support abutment 2 left sides is connected with the outer face is formed axial adjustable structure.The equipped thimble in left support abutment 5 right sides is slow-witted thimble, and two coaxial relative thimbles are contour, is provided with transition supporting 4 on the live centre 3 centering bearing position left sides.The support height of transition supporting 4 is than live centre 3 low 0.30mm in the present embodiment, when bent axle is just installed, before live centre 3 does not put in place, transition supporting 4 substitutes artificial supporting crankshaft right-hand member in advance, when flat cylinder 1 promotes the live centre 3 axial location bent axle that moves to left, this moment, transition supporting 4 promptly lost supporting role temporarily.The bent axle axle head treats that keyseat and crank throw horizontal level are perpendicular, and the crank throw bottom of horizontal deflection is by spacing pillar 8 supportings of vertically-arranged on base 7, and crank throw top is compressed by hold-down mechanism.Spacing pillar 8 is threaded with base 7, adjusts length of fit and can regulate support height, to satisfy the crank throw supporting of different size.The bent axle milling key groove of same specification is only installed adjustment first, and all the other are that processing directly is installed, and whole erection is short unproductive time, the production efficiency height.
Claims (3)
1, a kind of bidirectional positioning fixture for crankshaft milling groove, it comprises flat cylinder (1), right support abutment (2), live centre (3), transition supporting (4), left support abutment (5), pneumatic pinch mechanism (6), base (7), spacing pillar (8) and key (9); It is left support abutment (5), the common reference for installation of right support abutment (2) that described base (7) is gone up the plane, and right support abutment (2) and left support abutment (5) are connected with base (7) by the key (9) that is coaxially set; The flat cylinder (1) that the equipped live centre (3) in described right support abutment (2) left side is connected with the outer face is formed axial adjustable structure, and the equipped thimble in left support abutment (5) right side is slow-witted thimble, and two coaxial relative thimbles are contour; It is characterized in that: the left side of described live centre (3) and be positioned at bent axle and treat that the groove milling axle journal has transition supporting (4), crank throw horizontal deflection one side of bent axle makes groove to be milled up, the crank throw bottom is provided with the spacing pillar (8) of perpendicular top external diameter, and its top is compressed by the end that compresses of pneumatic pinch mechanism (6).
2, bidirectional positioning fixture for crankshaft milling groove according to claim 1 is characterized in that: the support height of described transition supporting (4) is than the low 0.20-0.50mm of live centre (3) support height.
3, bidirectional positioning fixture for crankshaft milling groove according to claim 1 is characterized in that: described spacing pillar (8) and base (7) be connected to the screw thread adjustable structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202165263U CN201320690Y (en) | 2008-10-31 | 2008-10-31 | Crankshaft slotting bidirectional positioning fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202165263U CN201320690Y (en) | 2008-10-31 | 2008-10-31 | Crankshaft slotting bidirectional positioning fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201320690Y true CN201320690Y (en) | 2009-10-07 |
Family
ID=41158078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202165263U Expired - Lifetime CN201320690Y (en) | 2008-10-31 | 2008-10-31 | Crankshaft slotting bidirectional positioning fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201320690Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350646A (en) * | 2011-09-28 | 2012-02-15 | 天津第一机床总厂 | Typical curved part milling fixture |
| CN102717275A (en) * | 2012-06-29 | 2012-10-10 | 长城汽车股份有限公司 | Locating mechanism for machining two ends of crank shaft |
| CN104493595A (en) * | 2015-01-14 | 2015-04-08 | 青岛德盛机械制造有限公司 | Crank keyseat working fixture |
| CN104858684A (en) * | 2015-05-22 | 2015-08-26 | 安徽合力股份有限公司 | Fixture for shaft part axial hole automatic positioning |
| CN105415033A (en) * | 2015-12-16 | 2016-03-23 | 芜湖市甬微制冷配件制造有限公司 | Air-conditioner compressor crank shaft fixture |
| CN106670837A (en) * | 2015-11-06 | 2017-05-17 | 重庆赛之源齿轮制造有限公司 | Long-axis milling spline jig |
| CN106736677A (en) * | 2016-12-01 | 2017-05-31 | 重庆代发铸造有限公司 | Shaft body lamp |
| CN108500401A (en) * | 2018-03-29 | 2018-09-07 | 重庆润跃机械有限公司 | Clamping device for Gear Processing |
| CN114505521A (en) * | 2022-03-15 | 2022-05-17 | 哈尔滨理工大学 | Special bar double-thimble clamp for milling machine |
-
2008
- 2008-10-31 CN CNU2008202165263U patent/CN201320690Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350646A (en) * | 2011-09-28 | 2012-02-15 | 天津第一机床总厂 | Typical curved part milling fixture |
| CN102717275A (en) * | 2012-06-29 | 2012-10-10 | 长城汽车股份有限公司 | Locating mechanism for machining two ends of crank shaft |
| CN104493595A (en) * | 2015-01-14 | 2015-04-08 | 青岛德盛机械制造有限公司 | Crank keyseat working fixture |
| CN104858684A (en) * | 2015-05-22 | 2015-08-26 | 安徽合力股份有限公司 | Fixture for shaft part axial hole automatic positioning |
| CN104858684B (en) * | 2015-05-22 | 2017-05-03 | 安徽合力股份有限公司 | Fixture for shaft part axial hole automatic positioning |
| CN106670837A (en) * | 2015-11-06 | 2017-05-17 | 重庆赛之源齿轮制造有限公司 | Long-axis milling spline jig |
| CN105415033A (en) * | 2015-12-16 | 2016-03-23 | 芜湖市甬微制冷配件制造有限公司 | Air-conditioner compressor crank shaft fixture |
| CN106736677A (en) * | 2016-12-01 | 2017-05-31 | 重庆代发铸造有限公司 | Shaft body lamp |
| CN108500401A (en) * | 2018-03-29 | 2018-09-07 | 重庆润跃机械有限公司 | Clamping device for Gear Processing |
| CN114505521A (en) * | 2022-03-15 | 2022-05-17 | 哈尔滨理工大学 | Special bar double-thimble clamp for milling machine |
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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 |
Granted publication date: 20091007 |
|
| CX01 | Expiry of patent term |