CN204171858U - For the fixture of eccentric crankshaft fine grinding cylinder - Google Patents
For the fixture of eccentric crankshaft fine grinding cylinder Download PDFInfo
- Publication number
- CN204171858U CN204171858U CN201420628337.2U CN201420628337U CN204171858U CN 204171858 U CN204171858 U CN 204171858U CN 201420628337 U CN201420628337 U CN 201420628337U CN 204171858 U CN204171858 U CN 204171858U
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- China
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- eccentric crankshaft
- fixture
- chuck
- fine grinding
- shift fork
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Abstract
The utility model relates to a kind of fixture for eccentric crankshaft fine grinding cylinder, comprise ejector pin clamp, ejector pin clamp comprises the front thimble be connected with the spindle turntable of grinding machine, the back center be placed on grinding machine, spindle turntable is connected with shift fork, shift fork is connected with chuck by clamping screw, collet sleeve is on the one end of eccentric crankshaft needing processing, and the center, two ends of eccentric crankshaft is equipped with the centre bore of 60 °, and front thimble and back center match with two centre bores respectively.The utility model has mounting or dismounting convenience, efficiency is high, the advantage that machining accuracy is high.
Description
Technical field
The utility model relates to a kind of fixture for eccentric crankshaft fine grinding cylinder.
Background technology
The bonding machine of welding when packing for plastic tape, part is had in bonding machine---bent axle, the profile of bent axle as shown in Figure 1, because bent axle required precision is higher, the cylindrical of bent axle refines to form on grinding machine, because bent axle has two step cylindrical decentraction, have certain eccentric throw, this to adding the location in man-hour, grinding all brings difficulty.
As the schematic diagram that Fig. 2 is existing processing, bent axle inner hole sleeve in the hexagonal sticks of grinding jig, locate with bent axle inner hexagonal hole, at plug one end fastening nuts, withstand the centre bore at fixture two ends with the forward and backward thimble of grinding machine, the tailstock locking of installing back center, rotating spindle rotating disk, the shift fork band dynamic crankshaft of rotating disk makes circumference uniform motion along the center line that two thimbles are formed, and at this moment uses the cylindrical of wheel grinding bent axle, until be ground to size.Unclamp fastening nut after milled, unclamp the tailstock of locking, move after back center, bent axle is unloaded from grinding jig, and then load a part, a work period terminates.
But above-mentioned processing method mounting or dismounting are inconvenient, and efficiency is low.Often grind a part, its be enclosed within plug fills twice, tear twice open, because this axle has two place's cylindricals to grind, also to put forth one's strength after milled and just can extract; After fixture multiple clamping, stud also has the phenomenon of rotten tooth, and having used after a period of time also will clamp for machining again, and machining accuracy is low.In order to dismantle well when clamping, will have gap between plug and the hexagon ring of bent axle, during tune mill other end, benchmark is just inconsistent, and the cylindrical ground is just poor with the axiality in hole.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of mounting or dismounting convenience, efficiency high, the fixture for eccentric crankshaft fine grinding cylinder that machining accuracy is high and use processing method.
The purpose of this utility model is achieved through the following technical solutions: a kind of fixture for eccentric crankshaft fine grinding cylinder, comprise ejector pin clamp, ejector pin clamp comprises the front thimble be connected with the spindle turntable of grinding machine, the back center be placed on grinding machine, spindle turntable is connected with shift fork, shift fork is connected with chuck by clamping screw, collet sleeve is on the one end of eccentric crankshaft needing processing, the center, two ends of eccentric crankshaft is equipped with the centre bore of 60 °, and front thimble and back center match with two centre bores respectively.
Further improvement of the utility model is: described chuck is peach-shaped chuck.
Use the method for the fixture being used for eccentric crankshaft fine grinding cylinder, comprise the following steps: the centre bore first eccentric crankshaft two ends having been bored 60 °, chuck is fastened on eccentric crankshaft, eccentric crankshaft one crown is on the front thimble of grinding machine, other end back center holds out against, the tailstock of back center is equipped with in locking, rotating spindle rotating disk, the shift fork of spindle turntable drives eccentric crankshaft to make circumference uniform motion along the center line that two thimbles are formed, at this moment with the cylindrical of wheel grinding bent axle until be ground to size, unclamp tailstock and take out eccentric crankshaft, by upper step tune mill other end cylindrical, until be ground to size, and then filling next part, a work period terminates, and constantly circulates by above-mentioned steps, processes next part.
The utility model compared with prior art has the following advantages:
(1) mounting or dismounting are convenient, and efficiency is high.Often grind the cylindrical of a bent axle, as long as mounting or dismounting peach-shaped chuck, a degree of tightness tailstock once, just can complete time processing, easy to process.
(2) machining accuracy is high.That the axiality in institute's cylindrical grinding and hole is high, and during tune mill other end, positioning datum is consistent with two centre bore location of bent axle now, to grind two round axialities also very high, substantially increase the performance of bonding machine.
accompanying drawing illustrates:
Fig. 1 is the appearance schematic diagram of bent axle;
Fig. 2 is the fixture schematic diagram that prior art adds man-hour;
Fig. 3 is structural representation of the present utility model;
Number in the figure: 1-spindle turntable, 2-front thimble, 3-back center, 4-shift fork, 5-chuck, 6-eccentric crankshaft, 7-centre bore, 8-clamping screw, 9-emery wheel, 10-plug, 11-nut.
detailed description of the invention:
In order to deepen understanding of the present utility model, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, and this embodiment, only for explaining the utility model, does not form the restriction to the utility model protection domain.
As Fig. 3 shows the embodiment of a kind of fixture for eccentric crankshaft fine grinding cylinder of the utility model, comprise ejector pin clamp, ejector pin clamp comprises the front thimble 2 be connected with the spindle turntable 1 of grinding machine, be placed in the back center 3 on grinding machine, spindle turntable 1 is connected with shift fork 4, shift fork 4 is connected with chuck 5 by clamping screw 8, chuck 5 is enclosed within the one end of the eccentric crankshaft 6 needing processing, the center, two ends of eccentric crankshaft 6 is equipped with the centre bore 7 of 60 °, front thimble 2 and back center 3 respectively centre bore 7 described with two match, the preferred chuck 5 of the utility model is peach-shaped chuck.
Use the method for the fixture being used for eccentric crankshaft fine grinding cylinder, comprise the following steps: the centre bore first eccentric crankshaft 6 two ends having been bored 60 °, chuck 5 is fastened on eccentric crankshaft 6, eccentric crankshaft 6 one crown is on the front thimble 2 of grinding machine, other end back center 3 holds out against, the tailstock of back center 2 is equipped with in locking, rotating spindle rotating disk 1, the center line that the shift fork 4 of spindle turntable 1 drives eccentric crankshaft 6 to be formed along two thimbles makes circumference uniform motion, at this moment with the cylindrical of emery wheel 9 grinding bent axle until be ground to size, unclamp tailstock and take out eccentric crankshaft 6, by upper step tune mill other end cylindrical, until be ground to size, and then filling next part, a work period terminates, and constantly circulates by above-mentioned steps, processes next part.
Fixture described in the utility model mounting or dismounting are convenient, and efficiency is high, often grind the cylindrical of a bent axle, as long as mounting or dismounting peach-shaped chuck, a degree of tightness tailstock once, just can complete time processing, easy to process and machining accuracy is high.That the axiality in institute's cylindrical grinding and hole is high, and during tune mill other end, positioning datum is consistent with two centre bore location of bent axle now, to grind two round axialities also very high, substantially increase the performance of bonding machine.
Claims (2)
1. the fixture for eccentric crankshaft fine grinding cylinder, comprise ejector pin clamp, ejector pin clamp comprises the front thimble (2) be connected with the spindle turntable of grinding machine (1), be placed in the back center (3) on grinding machine, it is characterized in that: described spindle turntable (1) is connected with shift fork (4), described shift fork (4) is connected with chuck (5) by clamping screw (8), described chuck (5) is enclosed within the one end of the eccentric crankshaft (6) needing processing, the center, two ends of described eccentric crankshaft (6) is equipped with the centre bore (7) of 60 °, described front thimble (2) and described back center (3) match with two described centre bores (7) respectively.
2. according to claim 1 for the fixture of eccentric crankshaft fine grinding cylinder, it is characterized in that: described chuck (5) is peach-shaped chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420628337.2U CN204171858U (en) | 2014-10-28 | 2014-10-28 | For the fixture of eccentric crankshaft fine grinding cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420628337.2U CN204171858U (en) | 2014-10-28 | 2014-10-28 | For the fixture of eccentric crankshaft fine grinding cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204171858U true CN204171858U (en) | 2015-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420628337.2U Active CN204171858U (en) | 2014-10-28 | 2014-10-28 | For the fixture of eccentric crankshaft fine grinding cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204171858U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400632A (en) * | 2014-10-28 | 2015-03-11 | 南通御丰塑钢包装有限公司 | Clamp for finely grinding outer circle of eccentric crankshaft and method for processing by using clamp |
| CN107350963A (en) * | 2017-07-28 | 2017-11-17 | 津上精密机床（浙江）有限公司 | A kind of driving support meanss of bent axle |
-
2014
- 2014-10-28 CN CN201420628337.2U patent/CN204171858U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400632A (en) * | 2014-10-28 | 2015-03-11 | 南通御丰塑钢包装有限公司 | Clamp for finely grinding outer circle of eccentric crankshaft and method for processing by using clamp |
| CN107350963A (en) * | 2017-07-28 | 2017-11-17 | 津上精密机床（浙江）有限公司 | A kind of driving support meanss of bent axle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |