CN204843019U - Eccentric clamping device for parts machining - Google Patents
Eccentric clamping device for parts machining Download PDFInfo
- Publication number
- CN204843019U CN204843019U CN201520585620.6U CN201520585620U CN204843019U CN 204843019 U CN204843019 U CN 204843019U CN 201520585620 U CN201520585620 U CN 201520585620U CN 204843019 U CN204843019 U CN 204843019U
- Authority
- CN
- China
- Prior art keywords
- eccentric element
- eccentric
- clamping
- clamping cylinder
- centre gripping
- 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 - Fee Related
Links
Abstract
Eccentric clamping device for parts machining includes a three -jaw chuck and a centre gripping section of thick bamboo, and the appearance of a centre gripping section of thick bamboo and eccentric part is the cylinder structure, and three -jaw chuck presss from both sides and grips the excircle surface of holding a section of thick bamboo, and the clearance of all lining up is seted up along axial direction to a centre gripping section of thick bamboo inside and outside the front and back, and the gap width is 1-3mm, and a centre gripping section of thick bamboo is equipped with columniform centre gripping hole along the axial, and eccentric component assembly establishes at the centre gripping downtheholely, and the round hole has been seted up along the axial to eccentric part, the central line of centre gripping section of thick bamboo excircle is L1, and the central line in centre gripping hole is L2, and the central line of the round hole of eccentric part is L3, and the central line of eccentric part excircle is L4, L1 and L3 coincidence, L2 and L4 coincidence. The utility model provides high machining precision and improvement compress tightly light -case eccentric PARTS DEFORMED problem, and low in manufacturing cost installs and use portably, and be eccentric apart from being competent at the more how eccentric part of processing through modifing, is applied to and processes the part in batches, and the economic benefits that machining efficiency and quality improvement brought is showing more.
Description
Technical field
The utility model belongs to machinery manufacturing technology field, particularly relates to a kind of eccentric element processing clamping device.
Background technology
Eccentric element is the cylindrical of part and the axis being parallel of cylindrical or cylindrical and endoporus and does not coincide, and eccentric element is generally divided into eccentric shaft and eccentric bushing.In machine driving, gyration becomes linear reciprocating motion or rectilinear motion becomes gyration, is all generally to have come with eccentric shaft or bent axle.Axis being parallel between the cylindrical of eccentric shaft and eccentric element and cylindrical and mutually not overlapping platform; The cylindrical of eccentric bushing and eccentric element and the axis being parallel of endoporus and do not coincide, the distance between these two axis is called " eccentric throw ".
When processing eccentric element, normal employing be clamping with three-jaw chuck or chuck clamping, namely needing the eccentric part axis centering of processing to coincide to lathe spindle rotation, but all there is the deficiency of three aspects: one is that clamping step is more loaded down with trivial details, be not easy centering, eccentric throw precision is difficult to ensure, and is not suitable for batch production; Two is after machining, and Thin-Walled Eccentric part geometric accuracy on chuck is qualified, but just defective after taking off, part variation ellipse; Three is for alleviating Thin-Walled Eccentric part deformation, and when clamping force is turned down, part will rotate and make eccentric throw be difficult to ensure on fixture, and simultaneously because the fixture of institute's clamping is heavier, main shaft gyration speed is lower, and the roughness of institute's machining hole and periphery is poor.
Utility model content
The utility model, in order to solve weak point of the prior art, provides a kind of quick and easy for installation, eccentric element processing clamping device that good stability, machining accuracy are high.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: eccentric element processing clamping device, comprise scroll chuck and clamping cylinder, the profile of clamping cylinder and eccentric element is cylindrical structure, the outer round surface of scroll chuck clamping clamping cylinder, gap all through inside and outside before and after clamping cylinder in axial direction offers, clamping cylinder is provided with columniform clamping hole vertically, eccentric element assembling is located in clamping hole, and eccentric element offers circular hole vertically;
The center line of clamping cylinder cylindrical is L
1, the center line of clamping hole is L
2, the center line of the circular hole of eccentric element is L
3, the center line of eccentric element cylindrical is L
4, L
1with L
3overlap, L
2with L
4overlap;
Clamping cylinder front end outward flange is provided with prelocalization ring, prelocalization ring rear surface contacts with scroll chuck front end face and coordinates, clamping cylinder rear end inward flange is provided with rear locating ring, and rear locating ring front surface coordinates with end in contact after eccentric element, and the center line of prelocalization ring and rear locating ring all and L
1overlap.
The diameter of described eccentric element is 8 ~ 16mm, and gap width is 1 ~ 3mm.
The external diameter of described eccentric element and the internal diameter gap of clamping cylinder are 0.2 ~ 1.0mm.
Adopt technique scheme, L
1with L
3overlap, L
2with L
4overlap, so just ensure concentric with the cylindrical of clamping cylinder by the circular hole of eccentric element, Tutrning Process balance steadily.The clamping cylinder that employing of the present utility model is cracked, the width that cracks in gap is 1 ~ 3mm, along with the increase of eccentric element diameter, the corresponding increase of width in gap, but be generally no more than 3mm; By the location cylindrical clamping of eccentric element in the endoporus of clamping cylinder, located by the prelocalization ring of clamping cylinder front end and scroll chuck, in addition, the rear locating ring of clamping cylinder rear end limits the axial location of eccentric element, manipulation scroll chuck, clamping clamping cylinder, the gap shrinks on clamping cylinder, clamping hole has reduced the positioning and clamping of eccentric element.
Groundwork size of the present utility model and eccentric distance (L
1with L
2distance), its precision is pressed 1/5 of eccentric element and is manufactured, the center line of the center line of clamping cylinder cylindrical, the circular hole of eccentric element is all coaxial with machine tool chief axis, in addition, axis along this clamping cylinder offers gap, make it possess to crack design feature and the fiting property of sleeve, and consider the axial location of workpiece, shoulder or lathe pull bar can be adopted.
The detection method of eccentric element precision is that first part machines rear dial gauge and checks that processed endoporus is determined relative to the circular runout of machine tool chief axis, and general circular runout should control at 1/3 ~ 1/5 of eccentric element circular runout.
The utility model improves machining accuracy by the frock clamp that design is suitable, improve the eccentric element problem on deformation compressing thin-walled, main shaft gyration speed and working (machining) efficiency can be made to bring up to original 3 times, unload eccentric element distortion after processing less, design accuracy requirement can be ensured completely; In addition, the utility model low cost of manufacture, installs and uses easy, by amendment eccentric throw (L
1with L
2distance) can also be competent at and process more multi-eccentric part, be applied to batch machining part, the economic benefit that working (machining) efficiency and Quality advance bring is more remarkable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the right view of clamping cylinder and eccentric element in Fig. 1.
Detailed description of the invention
As depicted in figs. 1 and 2, eccentric element processing clamping device of the present utility model, comprise scroll chuck 1 and clamping cylinder 2, the profile of clamping cylinder 2 and eccentric element 3 is cylindrical structure, scroll chuck 1 clamps the outer round surface of clamping cylinder 2, gap 4 all through inside and outside before and after clamping cylinder 2 in axial direction offers, and clamping cylinder 2 is provided with columniform clamping hole vertically, eccentric element 3 assembling is located in clamping hole, and eccentric element 3 offers circular hole vertically;
The center line of clamping cylinder 2 cylindrical is L
1, the center line of clamping hole is L
2, the center line of the circular hole of eccentric element 3 is L
3, the center line of eccentric element 3 cylindrical is L
4, L
1with L
3overlap, L
2with L
4overlap;
Clamping cylinder 2 front end outward flange is provided with prelocalization ring 5, prelocalization ring 5 rear surface contacts with scroll chuck 1 front end face and coordinates, clamping cylinder 2 rear end inward flange is provided with rear locating ring 6, and after rear locating ring 6 front surface and eccentric element 3, end in contact coordinates, the equal and L of the center line of prelocalization ring 5 and rear locating ring 6
1overlap.Clamping cylinder 2, prelocalization ring 5 and rear locating ring 6 are structure as a whole.
The diameter of eccentric element 3 is 8 ~ 16mm, and gap 4 width is 1 ~ 3mm.When the diameter of eccentric element 3 is 8 ~ 10mm, gap 4 width is 1.0mm.When the diameter of eccentric element 3 is 11 ~ 16mm, the width in gap 4 is 2.5mm.
L
1with L
3overlap, L
2with L
4overlap, so just ensure concentric with the cylindrical of clamping cylinder 2 by the circular hole of eccentric element 3, Tutrning Process balance steadily.The clamping cylinder 2 that employing of the present utility model is cracked, the width that cracks in gap 4 is 1 ~ 3mm, along with the increase of eccentric element 3 diameter, the corresponding increase of width in gap 4, but be generally no more than 3mm; By the location cylindrical clamping of eccentric element 3 in the endoporus of clamping cylinder 2, located with scroll chuck 1 by the prelocalization ring 5 of clamping cylinder 2 front end, in addition, the rear locating ring 6 of clamping cylinder 2 rear end limits the axial location of eccentric element 3, manipulation scroll chuck 1, clamping clamping cylinder 2, the gap 4 on clamping cylinder 2 reduces, and clamping hole has reduced the positioning and clamping of eccentric element 3.
Groundwork size of the present utility model and eccentric distance (L
1with L
2distance), its precision is pressed 1/5 of eccentric element 3 and is manufactured, the center line of the center line of clamping cylinder 2 cylindrical, the circular hole of eccentric element 3 is all coaxial with machine tool chief axis, in addition, axis along this clamping cylinder 2 offers gap 4, make it possess to crack design feature and the fiting property of sleeve, and consider the axial location of workpiece, shoulder or lathe pull bar can be adopted.
The detection method of eccentric element 3 precision is that first part machines rear dial gauge and checks that processed endoporus is determined relative to the circular runout of machine tool chief axis, and general circular runout should control at 1/3 ~ 1/5 of eccentric element 3 circular runout.
The present embodiment not does any pro forma restriction to shape of the present utility model, material, structure etc.; every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all belong to the protection domain of technical solutions of the utility model.
Claims (3)
1. eccentric element processing clamping device, it is characterized in that: comprise scroll chuck and clamping cylinder, the profile of clamping cylinder and eccentric element is cylindrical structure, the outer round surface of scroll chuck clamping clamping cylinder, gap all through inside and outside before and after clamping cylinder in axial direction offers, clamping cylinder is provided with columniform clamping hole vertically, and eccentric element assembling is located in clamping hole, and eccentric element offers circular hole vertically;
The center line of clamping cylinder cylindrical is L
1, the center line of clamping hole is L
2, the center line of the circular hole of eccentric element is L
3, the center line of eccentric element cylindrical is L
4, L
1with L
3overlap, L
2with L
4overlap;
Clamping cylinder front end outward flange is provided with prelocalization ring, prelocalization ring rear surface contacts with scroll chuck front end face and coordinates, clamping cylinder rear end inward flange is provided with rear locating ring, and rear locating ring front surface coordinates with end in contact after eccentric element, and the center line of prelocalization ring and rear locating ring all and L
1overlap.
2. eccentric element processing clamping device according to claim 1, is characterized in that: the diameter of described eccentric element is 8 ~ 16mm, and gap width is 1 ~ 3mm.
3. eccentric element processing clamping device according to claim 1, is characterized in that: the external diameter of described eccentric element and the internal diameter gap of clamping cylinder are 0.2 ~ 1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520585620.6U CN204843019U (en) | 2015-08-06 | 2015-08-06 | Eccentric clamping device for parts machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520585620.6U CN204843019U (en) | 2015-08-06 | 2015-08-06 | Eccentric clamping device for parts machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204843019U true CN204843019U (en) | 2015-12-09 |
Family
ID=54733616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520585620.6U Expired - Fee Related CN204843019U (en) | 2015-08-06 | 2015-08-06 | Eccentric clamping device for parts machining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204843019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925802A (en) * | 2015-12-30 | 2017-07-07 | 天津宝涞精工集团股份有限公司 | A kind of small crankshaft car bias Special clamping equipment |
| CN107671562A (en) * | 2017-11-09 | 2018-02-09 | 贵州航帆精密机械制造有限公司 | A kind of Workpiece clamping device |
-
2015
- 2015-08-06 CN CN201520585620.6U patent/CN204843019U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925802A (en) * | 2015-12-30 | 2017-07-07 | 天津宝涞精工集团股份有限公司 | A kind of small crankshaft car bias Special clamping equipment |
| CN107671562A (en) * | 2017-11-09 | 2018-02-09 | 贵州航帆精密机械制造有限公司 | A kind of Workpiece clamping device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160806 |