CN203091771U - Eccentric fixture for crankshaft - Google Patents
Eccentric fixture for crankshaft Download PDFInfo
- Publication number
- CN203091771U CN203091771U CN 201320122033 CN201320122033U CN203091771U CN 203091771 U CN203091771 U CN 203091771U CN 201320122033 CN201320122033 CN 201320122033 CN 201320122033 U CN201320122033 U CN 201320122033U CN 203091771 U CN203091771 U CN 203091771U
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- CN
- China
- Prior art keywords
- anchor clamps
- claw
- watt
- crankshaft eccentric
- axis
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses an eccentric fixture for a crankshaft, which comprises a fixture base, a fixture body, a jaw, a jaw slide seat and a driving mechanism, wherein the fixture base is provided with a horizontal revolution axis, and one end is used for being connected a machine tool spindle; the fixture body is fixed on one half of the other end of the fixture base, and provided with a tile taking the revolution axis as the axis on the centripetal side; the jaw is arranged opposite to the tile and jointed to the other half of the other end of the fixture base; the jaw slide seat is guided in an end surface radial groove of the fixture base, and serves as the base of the jaw; and the driving mechanism drives the jaw slide seat to move in the radial groove to produce clamping or loosing. The machining precision can be guaranteed easily and the machining efficiency is high according to the eccentric fixture for the crankshaft.
Description
Technical field
The utility model relates to a kind of eccentric fixture that is used for crank-shaft link neck processing, belongs to the special-purpose eccentric fixture of small-sized single cylinder, twin-tub bent axle batch machining.
Background technology
Use manual eccentric fixture during tradition bent axle processing connecting rod neck, this mechanism wastes time and energy more, and labor strength is big, and clamping force is little, and has bigger unsafe factor.Rely on this class anchor clamps, at first by manually opening front pressuring plate and rear fender respectively, workpiece is packed on the chucking position, after axial and angle is located, close front pressuring plate and rear fender and manually tighten the screws clamp workpiece, this process experience adjustments coupling mechanism force of workman that places one's entire reliance upon, thereby workpiece skew, distortion often appear, need just can finish after the pine folder is adjusted one to twice repeatedly.
Known this manual eccentric fixture machining accuracy is relatively poor, need stay bigger surplus to guarantee desired precision by grinding machine, and production efficiency is low, is difficult to realize the automated production mode.So development high-new in China's industrial production, sophisticated product that traditional bent axle process equipment and technology have restricted.
The current industrial development is very rapid, people's living standard has had large increase, the people who pursues material life is also more and more, the various consumer goods are also well sold and in short supply, as automobile, motorcycle, yacht, tractor, the output of tricycle etc. increases year by year, but these all be unable to do without engine, bent axle is as one of most important part in the engine components, crank processing precision, it is particularly important that working (machining) efficiency seems, bent axle is owing to be subjected to cost, the restriction of benefit, in design, material and processing aspect have all experienced sizable differentiation, along with people to paying attention to environmental protection, performance, reduce increasing of manufacturing cost requirement, this evolution process also will continue.
As previously mentioned, state's inside crankshaft process equipment is backward relatively at present, and miniature precision bent axle numerically controlled processing equipment is very in short supply, and based on conventional equipment, roughing equipment, precision equipment and special equipment be mainly based on import, import equipment price virtual height, and use cost is higher relatively.
Summary of the invention
Have the deficiency that labor strength is big, working (machining) efficiency low and machining accuracy is difficult to guarantee in order to remedy existing bent axle process equipment, the utility model provides a kind of easy assurance machining accuracy and the high crankshaft eccentric anchor clamps of working (machining) efficiency.
The technical solution adopted in the utility model is:
A kind of crankshaft eccentric anchor clamps comprise:
Clamp base, the axis of rotation with level, an end are used for linking to each other with machine tool chief axis;
Clamp body is fixed in other end one side of something of described clamp base, entad side be provided with described axis of rotation be axis watt;
Claw, with described watt be oppositely arranged and be engaged in the in addition half of of the described clamp base other end;
The claw slide is directed in the end face radial slot of clamp base, as the pedestal of described claw; And
Driving mechanism drive described claw slide and move in described radial slot, and generation clamps or gets loose.
From above structure as can be seen, with the drama utility model, by matching the clamp body of use and the quick location that claw is realized crankshaft eccentric, because the assembly precision that clamp body and anchor clamps base are done is depended in the assurance of precision, and this precision is than adjusting the easier assurance of precision, thereby guaranteed machining accuracy.Claw is used for clamping or getting loose by being driven by the claw slide of radial drive, realizes once stepping up to satisfy processing request than being easier to, and efficient compares higher.
Above-mentioned crankshaft eccentric anchor clamps, the front of motor of described clamp body is provided with an angle locating piece, this angle locating piece has the tapped through hole of an axis normal in described axis of rotation and claw slide moving direction, and the adjustment screw that is matched with this tapped through hole is used to adjust the symmetry of each connecting rod axis of bent axle with respect to principal plane.
Above-mentioned crankshaft eccentric anchor clamps, described claw is a V-type groove structure with a watt relative face.
Above-mentioned crankshaft eccentric anchor clamps, described watt is semicircular watt.
Above-mentioned crankshaft eccentric anchor clamps, described clamp body is that flange is connected with described clamp base, has the centralized positioning pin-and-hole on the ring flange of clamp body.
Above-mentioned crankshaft eccentric anchor clamps, described clamp body have with respect to the face of claw and are used to hold described watt groove, after installing watt, the radial depth of other parts of groove greater than watt radial depth.
Above-mentioned crankshaft eccentric anchor clamps, described clamp body is provided with balancing weight in a side that is different from claw.
Above-mentioned crankshaft eccentric anchor clamps, described driving mechanism comprise the wedge that is directed at the inner axial hole of clamp base, and correspondingly, the entad end of described claw slide is provided with the composition surface that cooperates with described wedge.
Above-mentioned crankshaft eccentric anchor clamps, the working face of described wedge comprise the first anterior working face and second working face at rear portion, and the gradient of first working face is greater than the gradient of second working face.
Above-mentioned crankshaft eccentric anchor clamps, the driving link of described driving mechanism are hydraulic cylinder.
Description of drawings
Fig. 1 is the axle geodesic structure schematic diagram according to the automatic eccentric fixture of a kind of bent axle hydraulic pressure of the present utility model.
Fig. 2 is a crankshaft eccentric anchor clamps clamping schematic diagram.
Fig. 3 is crankshaft eccentric anchor clamps profiles.
Among the figure: 1. clamp base, 2. clamp body, 3. half-watt, 4. claw, 5. alignment pin, 6. claw slide, 7. balancing weight, 8. the angle locating piece is 9. adjusted screw.
The specific embodiment
A kind of crankshaft eccentric anchor clamps with reference to shown in the explanation accompanying drawing 1 comprise:
And then configuration clamp body 2, in structure shown in Figure 1, clamp body 2 is the static part in the automatic fixture, as the basis, location, because the location assembly precision requires than higher.As shown in Figure 2, the other end that described clamp body 2 is fixed in described clamp base 1 is one side of something of back segment in other words, entad side be provided with described axis of rotation be axis watt, be half-watt 3 among the figure, have the inner cylinder of location usefulness.
In structure shown in Figure 1, clamp body 2 is positioned on the clamp base 1 by alignment pin 5, and alignment pin can be two alignment pins, also can be single-locating pin, if the latter, alignment pin be the centre of gyration of clamp base, the former the time, two alignment pins are benchmark with the centre of gyration, the axial symmetry setting.Fix by one group of high-strength screw then.
As the movable part of anchor clamps, adopt claw 4, as shown in figs. 1 and 3, be oppositely arranged with described half-watt 3 and be engaged in the half of in addition of described clamp base 1 other end, like this, movable claw 4 can be realized clamping or getting loose.
In the structure shown in Fig. 1 and 3, configuration claw slide 6 is to drive described claw 4, and this claw slide 6 is directed in the end face radial slot of clamp base 1, as the pedestal of described claw 4.
About the driving mechanism of described claw slide, mainly drive described claw slide 6 and in described radial slot, move, and generation clamps or gets loose.Can adopt a claw in the chuck structure, remove remaining claw, utilize to rotate to become entad motion or the centrifugal motion that straight-line structure realizes claw.
Further, the front of motor of described clamp body 2 is provided with an angle locating piece 8, this angle locating piece 8 has the tapped through hole of an axis normal in described axis of rotation and claw slide 6 moving directions, and the adjustment screw 9 that is matched with this tapped through hole is used to adjust the symmetry of each connecting rod axis of bent axle with respect to principal plane.
About principal plane is clear and definite in crankshaft structure, and those skilled in the art should have clearly understanding to this, and the said processing that is adjusted into satisfied to different connecting rod necks is same as conventional manual eccentric fixture, repeats no more once more.
About the structure of described claw 4, can adopt the claw as scroll chuck, be the annular knurl face with a watt relative face or have band, also can adopt planar structure, also can satisfy clamping.Preferably, be V-type groove structure with a watt relative face, have accurate centering structure, can further guarantee clamping precision.
In some applications, described clamp body 2 has with respect to the face of claw 4 and is used to hold described watt groove, after installing watt, the radial depth of other parts of groove greater than watt radial depth.This structure can be avoided keeping in check effectively, thus clamping precision directly determined by half-watt 3 as shown in Figure 1, can not produce conflict.
Further, in order to guarantee dynamic balancing, described clamp body 2 is provided with balancing weight 7 in a side that is different from claw.Consider based on dynamically balanced, those skilled in the art calculates the size of balancing weight 7 easily.
In certain embodiments, described driving mechanism comprises the wedge that is directed at clamp base 1 inner axial hole, correspondingly, the entad end of described claw slide 6 is provided with the composition surface that cooperates with described wedge, wedge structure is fairly simple, and the precision height of the cooperation of face contact, and is easy to adjust.
Slightly dash in some enforcements, the working face of described wedge comprises the first anterior working face and second working face at rear portion, and the gradient of first working face is greater than the gradient of second working face.Like this, can clamp fast in the clamping starting stage, and, satisfy clamping at after-stage.
Particularly, inner wedge angle front end is 15 ° of angles for the 45 rear end, can realize the clamp speeds of two-part, jaw fast moving when promptly beginning to step up, and when jaw can move until clamping work pieces at a slow speed during near workpiece, otherwise when unclamping.
Preferably, the driving link of described driving mechanism is a hydraulic cylinder, the manner of execution of driving mechanism is depended in the configuration of hydraulic cylinder, as the need linear movement output, then adopt common newborn piston-type hydraulic cylinder, output is rotated if desired, and the chuck mode structure then can adopt oscillating cylinder or rotary oil cylinder as the aforementioned.
This clamping mode is compared with traditional bent axle clamping mode, at first greatly reduce operator's labour intensity, operating personnel only need lean against workpiece on axial locating surface and the angle locating surface, all the other actions are finished automatically by the front and back hydraulically operated fixture, secondly shortened the workpiece loading and unloading time greatly, conventional brace is installed workpiece needs about 1 minute, about 40 seconds of discharging workpieces, the automatic eccentric fixture of this hydraulic pressure is installed workpiece needs about 10 seconds, about 8 seconds of discharging workpieces, the automatic eccentric fixture clamping force of this hydraulic pressure is big once more, and workpiece deformation is little, can effectively improve crank processing precision.In a word, the development of these anchor clamps greatly reduces labor strength, has shortened non-cutting time, has effectively improved crank processing precision, has satisfied the processing request of bent axle, is particularly suitable for the batch machining and the automation machining production line of small-sized single cylinder or twin-tub bent axle.
Claims (10)
1. crankshaft eccentric anchor clamps is characterized in that, comprising:
Clamp base (1), the axis of rotation with level, an end are used for linking to each other with machine tool chief axis;
Clamp body (2) is fixed in other end one side of something of described clamp base (1), entad side be provided with described axis of rotation be axis watt;
Claw (4), with described watt be oppositely arranged and be engaged in the in addition half of of the described clamp base other end;
Claw slide (6) is directed in the end face radial slot of clamp base (1), as the pedestal of described claw (4); And
Driving mechanism drive described claw slide (6) and move in described radial slot, and generation clamps or gets loose.
2. crankshaft eccentric anchor clamps according to claim 1, it is characterized in that, the front of motor of described clamp body (2) is provided with an angle locating piece (8), this angle locating piece (8) has the tapped through hole of an axis normal in described axis of rotation and claw slide (6) moving direction, and the adjustment screw (9) that is matched with this tapped through hole is used to adjust the symmetry of each connecting rod axis of bent axle with respect to principal plane.
3. crankshaft eccentric anchor clamps according to claim 1 and 2 is characterized in that, described claw (4) is a V-type groove structure with a watt relative face.
4. crankshaft eccentric anchor clamps according to claim 3 is characterized in that, described watt is semicircular watt.
5. crankshaft eccentric anchor clamps according to claim 4 is characterized in that, described clamp body (2) and described clamp base (1) have the centralized positioning pin-and-hole for flange is connected on the ring flange of clamp body (2).
6. crankshaft eccentric anchor clamps according to claim 5 is characterized in that, described clamp body (2) has with respect to the face of claw (4) and is used to hold described watt groove, after installing watt, the radial depth of other parts of groove greater than watt radial depth.
7. crankshaft eccentric anchor clamps according to claim 3 is characterized in that, described clamp body (2) is provided with balancing weight (7) in a side that is different from claw.
8. crankshaft eccentric anchor clamps according to claim 1 and 2, it is characterized in that, described driving mechanism comprises the wedge that is directed at the inner axial hole of clamp base (1), and correspondingly, the entad end of described claw slide (6) is provided with the composition surface that cooperates with described wedge.
9. crankshaft eccentric anchor clamps according to claim 8 is characterized in that, the working face of described wedge comprises the first anterior working face and second working face at rear portion, and the gradient of first working face is greater than the gradient of second working face.
10. crankshaft eccentric anchor clamps according to claim 8 is characterized in that, the driving link of described driving mechanism is a hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320122033 CN203091771U (en) | 2013-03-18 | 2013-03-18 | Eccentric fixture for crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320122033 CN203091771U (en) | 2013-03-18 | 2013-03-18 | Eccentric fixture for crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203091771U true CN203091771U (en) | 2013-07-31 |
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ID=48843216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320122033 Expired - Fee Related CN203091771U (en) | 2013-03-18 | 2013-03-18 | Eccentric fixture for crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203091771U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551800A (en) * | 2015-01-22 | 2015-04-29 | 德州德隆(集团)机床有限责任公司 | Lathe clamp used for machining bent axle connecting rod neck |
| CN106041149A (en) * | 2016-08-09 | 2016-10-26 | 丹阳市宏光机械有限公司 | Clamp device special for eccentric special-shaped products |
| CN106271789A (en) * | 2016-10-26 | 2017-01-04 | 昆山勇翔精密机械有限公司 | Rocker box turning attachment |
| CN107538219A (en) * | 2017-08-31 | 2018-01-05 | 南京肯迈得机床制造有限公司 | Clamp in flexible mechanical joint |
| CN108436678A (en) * | 2018-05-28 | 2018-08-24 | 河南华洋发动机制造有限公司 | Crankshaft connecting rod journal grinding tool for processing |
| CN109513959A (en) * | 2017-09-17 | 2019-03-26 | 尹维恺 | A kind of unidirectional clamping power chuck |
| CN109531285A (en) * | 2018-12-11 | 2019-03-29 | 贵州天马虹山轴承有限公司 | A kind of processing technology of Special-shaped bearing |
| CN113649871A (en) * | 2021-08-30 | 2021-11-16 | 罡阳轴研科技(灌云)有限公司 | Grinding clamp for motorcycle engine crankshaft |
-
2013
- 2013-03-18 CN CN 201320122033 patent/CN203091771U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551800A (en) * | 2015-01-22 | 2015-04-29 | 德州德隆(集团)机床有限责任公司 | Lathe clamp used for machining bent axle connecting rod neck |
| CN106041149A (en) * | 2016-08-09 | 2016-10-26 | 丹阳市宏光机械有限公司 | Clamp device special for eccentric special-shaped products |
| CN106041149B (en) * | 2016-08-09 | 2018-05-04 | 丹阳市宏光机械有限公司 | Eccentric and special-shaped product Special clamp device |
| CN106271789A (en) * | 2016-10-26 | 2017-01-04 | 昆山勇翔精密机械有限公司 | Rocker box turning attachment |
| CN107538219A (en) * | 2017-08-31 | 2018-01-05 | 南京肯迈得机床制造有限公司 | Clamp in flexible mechanical joint |
| CN109513959A (en) * | 2017-09-17 | 2019-03-26 | 尹维恺 | A kind of unidirectional clamping power chuck |
| CN108436678A (en) * | 2018-05-28 | 2018-08-24 | 河南华洋发动机制造有限公司 | Crankshaft connecting rod journal grinding tool for processing |
| CN109531285A (en) * | 2018-12-11 | 2019-03-29 | 贵州天马虹山轴承有限公司 | A kind of processing technology of Special-shaped bearing |
| CN113649871A (en) * | 2021-08-30 | 2021-11-16 | 罡阳轴研科技(灌云)有限公司 | Grinding clamp for motorcycle engine crankshaft |
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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: 20130731 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |