CN103817381A - Alignment tool and alignment method for involute internal spline - Google Patents
Alignment tool and alignment method for involute internal spline Download PDFInfo
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- CN103817381A CN103817381A CN201410104234.0A CN201410104234A CN103817381A CN 103817381 A CN103817381 A CN 103817381A CN 201410104234 A CN201410104234 A CN 201410104234A CN 103817381 A CN103817381 A CN 103817381A
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- involute
- inner spline
- involute inner
- centering
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims description 35
- 238000005259 measurement Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005255 carburizing Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000009795 derivation Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
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Abstract
The invention relates to an alignment tool for an involute internal spline and an alignment method using the alignment tool and belongs to the field of machining technologies. The alignment tool comprises a cylinder body which can be inserted into an internal spline hole of an involute internal spline shaft part to be wire-cut. The cylinder body is provided with an inner hole and three outward protrusions, wherein the inner hole includes an alignment datum plane and the three outward protrusions extend in the length direction of the cylinder body. The cross section of the outer end of each outward protrusion is in a semicircular arc shape, wherein the symmetric central line of one outward protrusion is parallel to the alignment datum plane, and the other two outward protrusions are symmetrically distributed along the symmetric central line. The angular positions of the three outward protrusions are determined in the manner that the semicircular arcs of the outward protrusions are tangent to corresponding involute profiles on the two sides of the involute internal spline. The alignment tool for the involute internal spline is simple in structure, convenient to operate, capable of well guaranteeing the required coaxiality and the shape and size accuracy of the involute internal spline and capable of effectively controlling the depth of a hardened-layer of the involute internal spline and prolonging the service life of the involute internal spline.
Description
Technical field
The present invention relates to a kind of centering frock of machining, especially a kind of involute inner spline centering frock also relates to the aligning method that uses this frock simultaneously, belongs to Machining Technology field.
Background technology
Be the conventional strength member of engineering machinery with the gear shaft of involute inner spline, such part has the reference circle involute inner spline concentric with axle cylindrical.Add man-hour, consider that the correction method such as push broach, electrochemistry cost is high, be difficult to guarantee the problem such as internal spline and cylindrical be concentric, comparatively desirable technique be to the part with the original exterior feature of involute inner spline after the heat treatment of carburizing and quenching and so on, by line cutting refine shape, to eliminate heat treatment deformation.
But, realize line cutting correction of the flank shape and must properly settle the accurate orientation problem of involute inner spline after heat treatment---determine symmetry axis and its reference circle center of circle of involute inner spline by centering, and then set up successively reference axis and the initial point of line cutting.Like this could be in reaching involute inner spline axial workpiece finished product machining accuracy, guarantee that carburized layer thickness is even.
Summary of the invention
The object of the invention is to: propose a kind of simple in structure, frock that can conveniently solve involute inner spline centering by general measurer, thereby by the aligning method of convenient operation, when reaching involute inner spline axial workpiece finished product machining accuracy, guarantee that carburized layer thickness is even.
In order to reach above object, involute inner spline centering frock of the present invention comprises can insert the cylinder for the treatment of line cutting involute inner spline axial workpiece internal splined hole, and described cylinder has the endoporus and three evaginations that extend along cylinder length direction that comprise centering datum level; The outer end section of described evagination is semi arch, and the symmetrical center line of one of them evagination is parallel with described centering datum level, and another two evaginations are symmetrical about described symmetrical center line; The angular position of described three evaginations is determined so that the involute profile of its semi arch and corresponding involute inner spline both sides is tangent respectively.
It is that the semi arch of described three evaginations is tangent at the reference circle place of involute profile with corresponding involute inner spline both sides that the present invention further improves.Like this, can guarantee that the definite initial point of centering overlaps with the reference circle center of circle of involute inner spline.
The present invention further improves, and described endoporus is rectangle endoporus, and the one side of described rectangle endoporus is as centering datum level; One jiao of described rectangle has the opening that makes pole section c-shaped; Described evagination length direction has tapering.These behaves are all conducive to that frock is more easily inserted treats the involute inner spline hole of line cutting, and has certain radial elastic, after inserting evagination more reliably with involute profile cut-grafting.
Use the aligning method of frock of the present invention to comprise the following steps:
The first step, will treat line cutting involute inner spline axial workpiece be placed on the workbench of wire cutting machine with internal splined hole position upward;
Second step, the cylinder of involute inner spline centering frock is inserted in internal splined hole, make three evaginations respectively with the corresponding tight cut-grafting of involute inner spline both sides involute profile;
The 3rd step, dial gauge is fixed on wire cutting machine, the centering datum level of centering frock described in line cutting involute inner spline axial workpiece internal splined hole is treated in linear relative movement measurement, and by adjusting angular position, until an evagination symmetrical center line of described centering frock is parallel with wire cutting machine reference axis;
The 4th step, dial gauge is fixed on the whirligig that pivot overlaps with wire cutting machine working origin, wheel measuring is treated the line cutting involute inner spline axial workpiece axle cylindrical concentric with internal splined hole, and by adjusting relative depature position, until the center of circle of described axle cylindrical and the working origin of wire cutting machine overlap.
The present invention is simple in structure, and manipulation is convenient, can well guarantee shape and the dimensional accuracy of required axiality and involute inner spline, and can effectively control the case depth of involute inner spline, improves its service life.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the upward view of Fig. 1.
Fig. 3 is the use view of Fig. 1 embodiment.
Fig. 4 is the A-A cutaway view of Fig. 3.
Fig. 5 is for treating line cutting involute inner spline axle schematic diagram.
Fig. 6 is that evagination arc radius is determined geometrical relationship schematic diagram.
Fig. 7 is centering working origin schematic diagram.
The specific embodiment
Embodiment mono-
The involute inner spline centering frock of the present embodiment as depicted in figs. 1 and 2, comprise and can insert the cylinder 2 for the treatment of line cutting involute internal spline gear wheel shaft part internal splined hole, this cylinder 2 has the rectangle endoporus that comprises centering datum level 2-1, and three evagination 2-2 that extend along cylinder length direction.The outer end section of each evagination 2-2 is the semi arch with radius R, and the symmetrical center line B of one of them evagination is parallel with centering datum level 2-22-1, and another two evaginations are symmetrical about this symmetrical center line B.The angular position of three evagination 2-2 is determined (referring to Fig. 4, Fig. 6) so that the involute profile of its semi arch and corresponding involute inner spline both sides is tangent respectively.
Arc radius R can not be excessive or too small, and when excessive, circular arc and spline flank profil contact point exceed path, and R crosses small arc-shaped and will contact with at the bottom of spline, all can be on affecting the accurate of centering.Near the reference circle of the contact point (point of contact) that desirable R size should make circular arc and spline flank profil in spline tooth, preferably on reference circle, (see Fig. 6).Now, known according to involute Forming Theory, B point is the intersection point of circular arc, spline flank profil, reference circle, and straight line AB and spline basic circle are tangent, and it is upper that center of arc's point C drops on straight line AB, can draw arc radius R by following derivation thus:
In formula: m is spline modulus; α is spline pressure angle; D is spline reference diameter; E is the facewidth of spline after roughing.
Like this, being conducive to the definite initial point of centering most overlaps with the reference circle center of circle of involute inner spline.In addition, one jiao of rectangle endoporus has the opening 2-3 that makes pole section c-shaped, and its evagination length direction has the tapering of 3 ± 1 °.Because there is certain radial elastic, can make frock more easily insert and treat the involute inner spline hole that line cuts, more reliably with involute profile cut-grafting (referring to Fig. 3, Fig. 4).
Use the aligning method concrete steps of the present embodiment frock as follows:
The first step, the involute internal spline gear wheel shaft 1 for the treatment of line cutting refine processing after carburizing and quenching is placed in internal splined hole position upward on the workbench 3 of wire cutting machine (referring to Fig. 3);
Second step, cylinder 2 lower ends of involute inner spline centering frock are inserted in internal splined hole down, make three evaginations respectively with the corresponding tight cut-grafting of involute inner spline both sides involute profile (referring to Fig. 4);
The 3rd step, dial gauge is fixed on wire cutting machine, the centering datum level 2-1 of centering frock in the internal splined hole of line cutting involute internal spline gear wheel shaft 1 is treated in linear relative movement measurement, and by adjusting angular position, until an evagination symmetrical center line of centering frock is parallel with wire cutting machine reference axis Y, straightness error is in 0.01mm.
The 4th step, dial gauge 5 is fixed on the whirligig 4 that pivot overlaps with wire cutting machine working origin (wire electrode 3-1), this whirligig 4 is placed on the support 3 ' of wire cutting machine, wheel measuring is treated the line cutting involute internal spline gear wheel shaft 1 axle cylindrical concentric with internal splined hole, and by adjusting relative depature position, until the center of circle of axle cylindrical and the working origin of wire cutting machine overlap.
After line cutting fine finishining, as shown in Figure 5, cut the part between original tooth profile Q and line cutting flank profil q.
Facts have proved, because this example will carry out fine finishining take internal spline frock and cylindrical after benchmark centering organically combines, therefore can well guarantee the axiality of gear, cylindrical and involute inner spline.And, adopt the gear shaft of the present embodiment method processing not only can guarantee shape and the dimensional accuracy of involute inner spline, and can evenly cut reserved processing capacity, and control well involute inner spline effective case depth, be conducive to improve its service life.
Embodiment described above is only a kind of specific embodiment of the present invention, and nonrestrictive.Those of ordinary skills, not making other embodiment obtaining based on the present invention under creative work prerequisite, belong to the scope of protection of the invention.
Claims (6)
1. an involute inner spline centering frock, comprises and can insert the cylinder for the treatment of line cutting involute inner spline axial workpiece internal splined hole, it is characterized in that: described cylinder has the endoporus and three evaginations that extend along cylinder length direction that comprise centering datum level; The outer end section of described evagination is semi arch, and the symmetrical center line of one of them evagination is parallel with described centering datum level, and another two evaginations are symmetrical about described symmetrical center line; The angular position of described three evaginations is determined so that the involute profile of its semi arch and corresponding involute inner spline both sides is tangent respectively.
2. involute inner spline centering frock according to claim 1, is characterized in that: the semi arch of described three evaginations is tangent at the reference circle place of involute profile with corresponding involute inner spline both sides.
3. involute inner spline centering frock according to claim 2, is characterized in that: described endoporus is rectangle endoporus, and the one side of described rectangle endoporus is as centering datum level.
4. involute inner spline centering frock according to claim 3, is characterized in that: one jiao of described rectangle has the opening that makes pole section c-shaped.
5. involute inner spline centering frock according to claim 4, is characterized in that: described evagination length direction has tapering.
6. the aligning method that adopts the arbitrary described involute inner spline centering frock of claim 1 to 5, is characterized in that comprising the following steps:
The first step, will treat line cutting involute inner spline axial workpiece be placed on the workbench of wire cutting machine with internal splined hole position upward;
Second step, the cylinder of involute inner spline centering frock is inserted in internal splined hole, make three evaginations respectively with the corresponding tight cut-grafting of involute inner spline both sides involute profile;
The 3rd step, dial gauge is fixed on wire cutting machine, the centering datum level of centering frock described in line cutting involute inner spline axial workpiece internal splined hole is treated in linear relative movement measurement, and by adjusting angular position, until an evagination symmetrical center line of described centering frock is parallel with wire cutting machine reference axis;
The 4th step, dial gauge is fixed on the whirligig that pivot overlaps with wire cutting machine working origin, wheel measuring is treated the line cutting involute inner spline axial workpiece axle cylindrical concentric with internal splined hole, and by adjusting relative depature position, until the center of circle of described axle cylindrical and the working origin of wire cutting machine overlap.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410104234.0A CN103817381B (en) | 2014-03-19 | 2014-03-19 | A kind of involute inner spline centering frock and aligning method |
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| CN201410104234.0A CN103817381B (en) | 2014-03-19 | 2014-03-19 | A kind of involute inner spline centering frock and aligning method |
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| CN103817381B CN103817381B (en) | 2016-05-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109079260A (en) * | 2018-08-03 | 2018-12-25 | 南京工大数控科技有限公司 | A kind of roller gear eccentric location device and numerical control chamfering algorithm |
| CN110497039A (en) * | 2019-08-29 | 2019-11-26 | 西安煤矿机械有限公司 | A kind of alignment device and method of Gear Shaping Involute gear internal spline |
| CN116000384A (en) * | 2023-02-22 | 2023-04-25 | 扬力集团股份有限公司 | Key groove machining alignment device and method for double-key groove gear shaft |
Citations (5)
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|---|---|---|---|---|
| US4567664A (en) * | 1984-03-30 | 1986-02-04 | Invo-Spline, Inc. | Measuring gage for internal and external splines of a workpiece |
| CN202726642U (en) * | 2012-07-19 | 2013-02-13 | 西安西航集团莱特航空制造技术有限公司 | Process aligning device |
| CN103231260A (en) * | 2013-04-17 | 2013-08-07 | 宁波斯达弗液压传动有限公司 | Method for processing and positioning shaft extension spline on gear shaping machine |
| CN103495879A (en) * | 2013-09-30 | 2014-01-08 | 南车戚墅堰机车车辆工艺研究所有限公司 | Internal spline gear pitch circle quick positioning device and machining method thereof |
| CN203843317U (en) * | 2014-03-19 | 2014-09-24 | 南车戚墅堰机车车辆工艺研究所有限公司 | Aligning tool for involute internal spline |
-
2014
- 2014-03-19 CN CN201410104234.0A patent/CN103817381B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4567664A (en) * | 1984-03-30 | 1986-02-04 | Invo-Spline, Inc. | Measuring gage for internal and external splines of a workpiece |
| CN202726642U (en) * | 2012-07-19 | 2013-02-13 | 西安西航集团莱特航空制造技术有限公司 | Process aligning device |
| CN103231260A (en) * | 2013-04-17 | 2013-08-07 | 宁波斯达弗液压传动有限公司 | Method for processing and positioning shaft extension spline on gear shaping machine |
| CN103495879A (en) * | 2013-09-30 | 2014-01-08 | 南车戚墅堰机车车辆工艺研究所有限公司 | Internal spline gear pitch circle quick positioning device and machining method thereof |
| CN203843317U (en) * | 2014-03-19 | 2014-09-24 | 南车戚墅堰机车车辆工艺研究所有限公司 | Aligning tool for involute internal spline |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109079260A (en) * | 2018-08-03 | 2018-12-25 | 南京工大数控科技有限公司 | A kind of roller gear eccentric location device and numerical control chamfering algorithm |
| CN110497039A (en) * | 2019-08-29 | 2019-11-26 | 西安煤矿机械有限公司 | A kind of alignment device and method of Gear Shaping Involute gear internal spline |
| CN110497039B (en) * | 2019-08-29 | 2024-03-26 | 西安煤矿机械有限公司 | Alignment device and method for gear involute internal spline of gear shaping processing gear |
| CN116000384A (en) * | 2023-02-22 | 2023-04-25 | 扬力集团股份有限公司 | Key groove machining alignment device and method for double-key groove gear shaft |
| CN116000384B (en) * | 2023-02-22 | 2024-02-27 | 扬力集团股份有限公司 | Key groove machining alignment device and method for double-key groove gear shaft |
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| CN103817381B (en) | 2016-05-04 |
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Address after: 213011 Wuyi Road, Jiangsu, Changzhou, No. 258 Applicant after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Address before: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 258, No. Applicant before: CSR QISHUYAN INSTITUTE Co.,Ltd. |
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Effective date of registration: 20180817 Address after: 213011 258 Wuyi Road, Changzhou, Jiangsu Co-patentee after: CHANGZHOU RUITAI ENGINEERING MACHINERY Co.,Ltd. Patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Address before: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. |
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Address after: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Patentee after: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. Address before: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. Patentee before: CHANGZHOU RUITAI ENGINEERING MACHINERY Co.,Ltd. |
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Address after: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Country or region after: China Patentee after: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. Address before: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. Country or region before: China Patentee before: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. |