CN100526007C - Process for grinding tumbler bearing bore and its specified clamp apparatus - Google Patents

Process for grinding tumbler bearing bore and its specified clamp apparatus Download PDF

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Publication number
CN100526007C
CN100526007C CNB200410060319XA CN200410060319A CN100526007C CN 100526007 C CN100526007 C CN 100526007C CN B200410060319X A CNB200410060319X A CN B200410060319XA CN 200410060319 A CN200410060319 A CN 200410060319A CN 100526007 C CN100526007 C CN 100526007C
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CN
China
Prior art keywords
clamp
grinding
rotary arm
special fixture
cap
Prior art date
Application number
CNB200410060319XA
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Chinese (zh)
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CN1631615A (en
Inventor
黄宗响
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中原工学院
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Application filed by 中原工学院 filed Critical 中原工学院
Priority to CNB200410060319XA priority Critical patent/CN100526007C/en
Publication of CN1631615A publication Critical patent/CN1631615A/en
Application granted granted Critical
Publication of CN100526007C publication Critical patent/CN100526007C/en

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Abstract

The invention relates to a rotor arm bearing inner hole grinding technics and its special clamp. First grind the rotor bearing side surface on flat grinder and then grind the circular lines of rotor bearing symmetrical dual eccentric positive edge. Pull rotor shaft sleeve on the cylinder cavity special clamp which is concentric outer and inner circle with the dual eccentric positive edge circumcircle as the benchmark and then put the clamp in the electromagnetic centreless clamp to grind the bearing inner hole on the internal grinder. The special clamp includes the clamp body, side cap and three bolts linking the clamp and the side cap together. There holes larger than the bearing inner hole on the clamp bottom and the side cap. The invention enhances the processing efficiency and accuracy while its technics is reliable and capable of mass production.

Description

The grinding technique of rotary arm bearing endoporus and special fixture
One. technical field:
The invention belongs to the mechanical processing technique technical field, relate in particular to a kind of technology and special fixture that the rotary arm bearing endoporus is carried out grinding.
Two. background technology:
Rotary arm bearing is the vitals of cycloidal planetary gear speed reducer.This bearing is the symmetric double eccentric structure, and its endoporus is owing to be installation and machining benchmark and become critical process in the grinding technique process, again because the structure of rotary arm bearing makes this operation become processing difficulties.The grinding processing method of rotary arm bearing endoporus has at present: on internal grinder, with three-jaw or chuck clamping rotary arm bearing rib external diameter, access an offset and process.Another kind of processing method is, on internal grinder, end face of rotary arm bearing leans against on the anchor clamps end face, and another end face is processed after compressing centering with bolt.More than two kinds of methods all have the problem that needs the endoporus center of workpiece is carried out centering before the processing, not only time-consuming, and precision is difficult to guarantee that cause the internal grinding working (machining) efficiency low, percent defective is higher.Electric magnetic no-core clamp is the processing method commonly used of the concentric part of mechanical industry grinding dish class, and for the structure that resembles rotary arm bearing, can't directly process on electric magnetic no-core clamp.
Three. summary of the invention
The grinding technique and the special fixture that the objective of the invention is to overcome the deficiencies in the prior art and a kind of high efficiency, high-precision rotary arm bearing endoporus are provided, by changing the special fixture of rotary arm bearing grinding technique process and grinding internal diameter, make the inner hole grinding of rotary arm bearing on electric magnetic no-core clamp, to carry out.
Technical scheme of the present invention is as follows:
At first, two end faces of processing grinding rotary arm bearing on surface grinding machine,
Secondly, on cylindrical grinder, use the mandrel clamping, the eccentric rib external diameter of the symmetric double of grinding rotary arm bearing obtains the eccentric rib circumscribed circle of symmetric double,
Then, with the eccentric rib circumscribed circle of the symmetric double of the rotary arm bearing of grinding is benchmark, in the special fixture of the concentric cylindrical die cavity of external diameter and clamp, simultaneously this special fixture is placed on the electric magnetic no-core clamp grinding bearing endoporus on internal grinder in rotary arm bearing is set in.
Described special fixture comprises clamp body, three screws of end cap and connecting clamp body and end cap, on clamp body bottom and end cap, have hole greater than the brearing bore size, during the workpiece suit, unclamp screw, open end cap 4, the workpiece 2 of packing into, the endoporus fit clearance of eccentric rib circumscribed circle of symmetric double and special fixture is controlled between 0.015~0.020mm, then, cover end cap and trip bolt, the process that unloads workpiece is opposite with said process, during the grinding rotary arm bearing, on electric magnetic no-core clamp, put the special fixture that is set with rotary arm bearing, under magnetically-actuated, electric magnetic no-core clamp, special fixture turns clockwise with rotary arm bearing, magnetic pole is close in the bottom surface of special fixture, the external diameter of special fixture is close to the back and supports and lower support, and two supports are adjusted the position to adjust the size of offset by the screw on it, can carry out grinding to endoporus with emery wheel.
Described special fixture comprises three screws of clamp body, end cap and connecting clamp body and end cap, on clamp body bottom and end cap, have hole greater than the brearing bore size, clamp body is the concentric cylindrical die cavity in inside and outside footpath, and the inside and outside footpath of cylindrical die cavity requires axiality and surface roughness precision.
Beneficial effect of the present invention is as follows:
1. the present invention has improved working (machining) efficiency: owing to used electric magnetic no-core clamp, need on lathe, can not process by centering, though it is outer through the circumscribed circle operation to have increased the two eccentric ribs of grinding, but make the internal grinding operation realize specialized production, improved working (machining) efficiency on the whole, used special fixture simultaneously with cylindrical die cavity, can be equipped with one group of special fixture for each lathe, in machine tooling, the operator can finish the loading and unloading of another set of anchor clamps, can save a large amount of non-cutting times.Each group special fixture can be reused by the method for the outer warp of regular reconditioning, has saved production cost.
2. the present invention has improved machining accuracy: why electric magnetic no-core clamp can improve machining accuracy, is to be used on the electric magnetic no-core clamp magnetic pole of workpiece end face location, can autogenous grinding on lathe, and by magnetic force workpiece and magnetic pole are adjacent to.According to the operation principle of electric magnetic no-core clamp, be by the offset between anchor clamps and the workpiece axle center in addition, workpiece is leaned against on back support and the lower support, therefore, the precision of mill endoporus is subjected to the influence of work mounting s periphery precision.When grinding rotary arm bearing endoporus, used cylindrical special fixture, because these anchor clamps is simple in structure, when its external cylindrical surface of processing, can reach higher geometric accuracy, therefore improved the precision of endoporus processing.
In addition, rotary arm bearing inner hole grinding processing technology also has the characteristics that process is reliable, be suitable for production in enormous quantities.
Four. description of drawings:
Fig. 1 rotary arm bearing axial arrangement schematic diagram.
Fig. 2 rotary arm bearing radial cross-section.
The special fixture radial cross-section that the inside and outside footpath of Fig. 3 is concentric with cylindrical shape chamber.
Special fixture radial cross-section behind Fig. 4 suit workpiece.
Fig. 5 special fixture grinding endoporus schematic diagram on electric magnetic no-core clamp.
Five. the specific embodiment:
Embodiment: the technical process of grinding rotary arm bearing endoporus, with reference to Fig. 1 Fig. 2, at first, two planes of processing rotary arm bearing 2 on surface grinding machine; Secondly, on cylindrical grinder, the mandrel clamping, the outer warp of the eccentric rib of grinding rotary arm bearing symmetric double obtains the eccentric rib circumscribed circle 1 of symmetric double; With reference to Fig. 3 Fig. 4 Fig. 5, then, on internal grinder, use electric magnetic no-core clamp and special fixture grinding bearing endoporus.Exclusive clamps has clamp body 3 and end cap 4 connects by three screws 5, has the hole greater than the brearing bore size on clamp body bottom and the end cap.The process of workpiece suit is: unclamps screw 5, opens end cap 4, and the workpiece 2 of packing into, the endoporus fit clearance of eccentric rib circumscribed circle 1 of symmetric double and special fixture 3 is controlled between 0.015~0.020mm, then, covers end cap 4 and trip bolt 5.The process that unloads workpiece is opposite with said process, repeats no more.Grinding rotary arm bearing endoporus is with reference to Fig. 5, on electric magnetic no-core clamp 7, put the special fixture that is set with rotary arm bearing, owing to adjusted the offset 6 of electric magnetic no-core clamp in advance in the special fixture axis, electric magnetic no-core clamp 7 turns clockwise, under magnetically-actuated, special fixture is turned clockwise together with rotary arm bearing.Magnetic pole is close in the bottom surface of special fixture, and owing to there is offset 6 to make special fixture outer support 11 and lower support 8 through being close to after, two supports can be adjusted the position to adjust the size of offset 6 by the screw on it 9, can carry out grinding to endoporus with emery wheel 10.

Claims (3)

1, a kind of grinding technique of rotary arm bearing endoporus is characterized in that:
At first, two end faces of processing grinding rotary arm bearing on surface grinding machine,
Secondly, on cylindrical grinder, use the mandrel clamping, the eccentric rib external diameter of the symmetric double of grinding rotary arm bearing obtains the eccentric rib circumscribed circle of symmetric double,
Then, with the eccentric rib circumscribed circle of the symmetric double of the rotary arm bearing of grinding is benchmark, in the special fixture of the concentric cylindrical die cavity of external diameter and clamp, simultaneously this special fixture is placed on the electric magnetic no-core clamp grinding bearing endoporus on internal grinder in rotary arm bearing is set in.
2, the grinding technique of a kind of rotary arm bearing endoporus according to claim 1, it is characterized in that: described special fixture comprises clamp body, three screws of end cap and connecting clamp body and end cap, on clamp body bottom and end cap, have hole greater than the brearing bore size, during the workpiece suit, unclamp screw, open end cap, the workpiece of packing into, the endoporus fit clearance of eccentric rib circumscribed circle of symmetric double and special fixture is controlled between 0.015~0.020mm, then, cover end cap and trip bolt, the process that unloads workpiece is opposite with said process, during the grinding rotary arm bearing, puts the special fixture that is set with rotary arm bearing on electric magnetic no-core clamp, under magnetically-actuated, electric magnetic no-core clamp, special fixture turns clockwise with rotary arm bearing, and magnetic pole is close in the bottom surface of special fixture, and the external diameter of special fixture is close to the back and supports and lower support, two supports are adjusted the position to adjust the size of offset by the screw on it, can carry out grinding to endoporus with emery wheel.
3, a kind of grinding special fixture of rotary arm bearing endoporus, it is characterized in that: described special fixture comprises three screws (5) of clamp body (3), end cap (4) and connecting clamp body (3) and end cap (4), on clamp body bottom and end cap, have hole greater than the brearing bore size, clamp body (3) is the concentric cylindrical die cavity in inside and outside footpath, and the inside and outside footpath of cylindrical die cavity requires axiality and surface roughness precision.
CNB200410060319XA 2004-12-10 2004-12-10 Process for grinding tumbler bearing bore and its specified clamp apparatus CN100526007C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB200410060319XA CN100526007C (en) 2004-12-10 2004-12-10 Process for grinding tumbler bearing bore and its specified clamp apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB200410060319XA CN100526007C (en) 2004-12-10 2004-12-10 Process for grinding tumbler bearing bore and its specified clamp apparatus

Publications (2)

Publication Number Publication Date
CN1631615A CN1631615A (en) 2005-06-29
CN100526007C true CN100526007C (en) 2009-08-12

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Families Citing this family (11)

* Cited by examiner, † Cited by third party
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CN100384589C (en) * 2006-04-25 2008-04-30 中原工学院 Technical method for determining electromagnetic core-free clamp workpiece eccentricity
CN102485422A (en) * 2010-12-03 2012-06-06 大连吉润高新技术机械有限公司 Novel universal floor grinding machine
CN102211300A (en) * 2011-04-20 2011-10-12 江苏钱潮轴承有限公司 Backer tool for grinding bearing internal diameter
JP5729178B2 (en) * 2011-07-04 2015-06-03 日本精工株式会社 Grinding machine and grinding method
CN103424090B (en) * 2012-05-25 2016-02-17 中原工学院 A kind of bearing channel surfaceness on-line measurement instrument
CN102974974A (en) * 2012-10-18 2013-03-20 大连冶金工具厂有限公司 Roller order-reversed processing method
CN103158050A (en) * 2013-03-25 2013-06-19 靖江市建肯高速电机有限公司 Grinding method for motorized spindle end cover
CN103639872B (en) * 2013-11-25 2015-11-18 李东炬 Nuclear power bearing inner race processing Special universal grinding machine
CN106112631A (en) * 2016-07-25 2016-11-16 武汉协和齿环有限公司 Conical ring processing shoe formula centerless fixture and location thereof adjust frock technique
CN106863035A (en) * 2016-12-29 2017-06-20 常熟市常轴轴承有限公司 The high ferro bearing method for machining bore of wear-resistant pressure-resistant seal
CN107243788B (en) * 2017-07-27 2019-05-31 中原工学院 A kind of adjustable float support device and method of adjustment

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Granted publication date: 20090812

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