CN105415179A - Center hole out-of-roundness detection method of shaft parts - Google Patents
Center hole out-of-roundness detection method of shaft parts Download PDFInfo
- Publication number
- CN105415179A CN105415179A CN201510847396.8A CN201510847396A CN105415179A CN 105415179 A CN105415179 A CN 105415179A CN 201510847396 A CN201510847396 A CN 201510847396A CN 105415179 A CN105415179 A CN 105415179A
- Authority
- CN
- China
- Prior art keywords
- workpiece
- center hole
- circle
- headstock
- lathe
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
- B24B41/062—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
- B24B49/04—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/363—Single-purpose machines or devices for grinding surfaces of revolution in situ
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
- G01B5/201—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures for measuring roundness
Abstract
The invention discloses a center hole out-of-roundness detection method of shaft parts. The method includes the following steps that a spare tip of a machine tool is transformed into a three-point tip for detection; the three-point tip is arranged on a machine tool headstock for grinding a workpiece to form a headstock three-point tip; the workpiece to be subjected to center hole out-of-roundness detection is hoisted to the machine tool to be clamped and the headstock three-point type tip and the workpiece are marked with marks through a marking pen; a machine tool button is jogged, a heart-shaped clamping and poking rod of the machine tool drives the workpiece to jog and rotate; the runout value A1 of the portion closest to the shaft neck of the headstock three-point type tip is measured; the steps mentioned above are repeated, then the machine tool button is jogged again to stop the workpiece from rotating, the workpiece is poked manually to rotate clockwise by about 90 degrees, 180 degrees and 270 degrees, and the runout value A2, the runout value A3 and the runout value A4 are recorded; and the Amax-Amin difference value serves as the center hole out-of-roundness judgment value. By the adoption of the center hole out-of-roundness detection method, the precise detection purpose of center hole out-of-roundness of the shaft parts can be well achieved, and the clear and operable control requirements can be met for control over center hole out-of-roundness.
Description
Technical field
The present invention relates to axial workpiece, be specifically related to the detection method that a kind of center hole of shaft part loses circle.
Background technology
The final fine finishining of usual axial workpiece needs to adopt grinding, to ensure journal size precision and form and position tolerance (circularity, cylindricity etc. as axle journal), the positioning datum of grinding process is generally the centre bore at axial workpiece two ends, and the machining accuracy of centre bore directly can affect the precision of processing parts.According to existing process equipment situation, centre bore processing is generally divided into two kinds of situations: a kind of situation is that axial workpiece is motionless, and cutter rotates the processing carrying out centre bore; Another kind is that axial workpiece rotates, cutter is motionless, this situation need use center rest support on workpiece axle journal, the cutter that above-mentioned two kinds of processing modes adopt is equal centre drill, boring cutter, counterbit etc., and the first processing method causes centre bore to lose the main cause of circle mainly in the wearing and tearing of cutter, the unit head precision etc. of lathe; The main cause that the second processing method causes centre bore to lose circle is mainly beated at the scroll chuck of lathe, the machining accuracy, central frame roller wearing and tearing, cutter etc. of workpiece support centre frame place axle journal.Losing circle problem for centre bore, as long as take the method got rid of one by one, is not scabrous.Detail drawing generally there is roughness to the processing request of centre bore, diameter, length and Angular Dimension requirement, although do not specially require (see figure 1) to the circularity of centre bore 60 degree of conical surfaces, but it is vital to the guarantee of the axle journal circularity of ground axial workpiece, in theory, lathe is top is that whole circle contacts (see Fig. 2 completely with the cooperation of centre bore, blacking position is contact site), in fact, due to top, the mismachining tolerance of centre bore exists, especially centre bore 60 degree of conical surfaces lose the existence of circle, making top is only that localized contact is (see Fig. 3 with the contact of centre bore, blacking position is contact site), because emery wheel is with the process of absorption surface grinding, rely on top contact with centre bore to locate completely, particularly for the axle journal near top position, often there is the problem that machining shaft roundness is overproof.Analyze reason: grinding machine is top to be generally equipped with by lathe producer, belong to precision component, general employing special equipment grinds and forms, and top precision can be guaranteed, when there is the part circularity over tolerance of grinding, analyzing main cause is that processing work centre bore 60 degree of conical surfaces lose round causing.But for detection and the control overflow detection method that still neither one is reliable, quantitative at present of the mistake circle situation of centre bore 60 degree of conical surfaces, normally coordinate with it top on smear red lead powder after, grind with workpiece center hole and contact, have a look roughly contact situation, the firmly situation of this method and red lead powder applying amount, dilute strength and operator has much relations, cannot obtain quantitatively, accurately measuring.
Summary of the invention
The object of the invention is for above-mentioned shortcoming, the mistake circle situation of centre bore 60 degree of conical surfaces is carried out quantitatively, detected accurately and controlled, thus the circularity of grinding axle journal is controlled effectively.
The present invention utilizes 3 principles determining a circle, toply the top of only three point contact is changed system into by what coordinate with workpiece center hole, locate with this top to contact in different angular position with workpiece center hole, within the workpiece central hole will touch at every turn 3 points of diverse location like this, 3 center variation determined (namely centre bore loses circle situation) of each contact position can be embodied by the difference of beating measured close to the top axle journal place of major part.If workpiece center hole is theoretical circle, no matter the jitter values of any angular surveying all identical (namely difference is zero), if workpiece center hole is not theoretical circle (namely losing circle), the jitter values so measured in all angles can be variant, this difference reflects 3 different round centers determined and there are differences, and the mistake circle situation maximum jitter value of a centre bore and the difference of minimum jitter values can accurately reflect.
The invention provides the detection method that a kind of center hole of shaft part loses circle, this detection method utilizes 3 principles determining a circle, by 3 points adopting bikini top contact center hole different, the difference at 3 different centers determined is reflected by the jitter values detecting axle journal, and by the difference of maximum jitter value and minimum jitter values as quantized value.The instrument that this measuring method uses is simple, only needs to prepare a bikini in addition top, does not need other cubing to drop into, and can lose circle situation make Measurement accuracy to the centre bore that cannot quantitatively detect at present.
The technical scheme realizing the object of the invention is:
Center hole of shaft part loses a detection method for circle, comprises the steps:
(1) by the lathe coordinated with workpiece center hole with top spare part to change system into the bikini detected top;
(2) by after top for the holotype headstock of normal grinding work piece taking off, be mounted on the machine tool headstock of grinding work piece by top for this bikini, form headstock bikini top;
(3) work piece hoisting centre bore to be checked being lost circle to the enterprising luggage folder of lathe, with marking pen headstock bikini top with workpiece on make a check mark with stain respectively;
(4) crawl lathe button, drives workpiece crawl to rotate by the heart carrier for bolt driving lever of lathe;
(5) measure the jitter values A1 closest to the top axle journal place of headstock bikini, jitter values is the mobility scale that dial gauge indicates;
(6) crawl lathe button makes it stop operating again, and people, for stirring workpiece by rotating clockwise about 90 degree, then repeats above-mentioned steps: crawl lathe button, drives workpiece crawl to rotate, Jumping in recording value A2 by the heart carrier for bolt driving lever of lathe;
(7) by step (6) respectively people for stirring workpiece by rotating clockwise about 180,270 degree, and respectively Jumping in recording value A3, A4;
(8) by A in A1 to A4
max-A
mindifference lose the decision content of circle as centre bore, inspection center hole can lose circle situation according to decision content.
In described step (1), transformation of the way mode is tool grinder or the wire cutting machine transformation of the way.
In described step (1), the bikini of the transformation of the way is top only retains 3 contacts site, place, and the width of every two contacts site is 2 ~ 3mm, about in 120 degree of distributions.
In described step (3), on workpiece, centre bore one end to be checked coordinates with headstock bikini is top, and workpiece other end centre bore coordinates with tailstock back dead centre.
In described step (4), workpiece need being driven to rotate with heart carrier for bolt driving lever, can not people rotating for stirring workpiece, because when heart carrier for bolt driving lever drives workpiece to rotate, do not relatively rotate between top and workpiece; When people rotates for stirring workpiece, relatively rotate between top and workpiece.
In described step (5), the described instrument for measuring jitter values is magnetic stand, extension bar and dial gauge, and the effect of magnetic stand is the base as survey tool, is adsorbed on lathe, to measure, extension bar is for connecting dial gauge and magnetic stand.
Said method gets 0,90,180,270 positions to measure, and also can get more points and measure in practical operation, but in general, measure at 4 and just can reflect the mistake circle situation of centre bore completely.Use this detection method, solve the accurate test problems that center hole of shaft part loses circle well, clear and definite, the exercisable control overflow of control proposition of circle can be lost centre bore.Usually, for the centre bore of pilot process, lose circle situation and will control within 0.05, be i.e. Amax-Amin≤0.05; For the centre bore of precision grinding process, different according to the requirement of the circularity of workpiece axle journal, should control within 0.02, i.e. Amax-Amin≤0.02.
Advantage of the present invention is:
1, survey tool is simple, only need an another preparation three-point contact top, do not need to drop into other cubing and can solve the accurate test problems that center hole of shaft part loses circle well, clear and definite, the exercisable control overflow of control proposition of circle can be lost centre bore.
2, quantitatively detect accurately the mistake circle situation of centre bore, losing circle situation is draw according to maximum with the minimum difference of several times dial gauge reading, gets rid of human factor.According to testing result accurately, being conducive to analyzing the concrete reason producing and lose circle, accurately confirming improving result simultaneously.
Accompanying drawing explanation
60 degree, hole conical surface figure centered by Fig. 1;
To be that lathe is top coordinate hookup with centre bore is theoretic to Fig. 2;
Fig. 3 toply coordinates hookup with centre bore is actual;
Fig. 4 is the top figure of bikini changed a social system in the present invention;
Fig. 5 is the profile of A-A in Fig. 4;
Fig. 6 is the top and workpiece marked graph of headstock bikini in the present invention;
Fig. 7 be in the present invention workpiece by rotating clockwise figure;
Fig. 8 is that workpiece of the present invention is by rotating clockwise figure.
In figure, 1-headstock bikini is top, 2-workpiece, 3-tailstock back dead centre, 4-heart carrier for bolt driving lever, 5-magnetic stand, 6-extension bar, 7-dial gauge.
Detailed description of the invention
First by a lathe coordinated with workpiece center hole with top spare part changed a social system by tool grinder or Linear cut, the bikini top (see Fig. 4 and Fig. 5) of the transformation of the way for detecting, these top only reservation three contacts site, width 2 ~ 3mm, about in 120 degree of distributions, after top for the holotype headstock of normal grinding work piece taking off, this is toply installed on the lathe of grinding work piece, as Fig. 6, form headstock bikini top 1, the workpiece 2 again centre bore to be checked being lost circle is lifted into the enterprising luggage folder of lathe, on workpiece 2, centre bore one end to be checked coordinates with headstock bikini top 1, workpiece other end centre bore coordinates with tailstock back dead centre 3, tailstock back dead centre 3 supports and positioning action, with marking pen makes a check mark (as the stain in Fig. 7 ●) respectively on headstock bikini top 1 and workpiece 2, then crawl lathe button, workpiece crawl is driven to rotate by the heart carrier for bolt driving lever 4 of lathe.Attention: must being now drive workpiece to rotate with heart carrier for bolt driving lever, can not people rotating for stirring workpiece, because when the former rotates, toply together to rotate with workpiece, does not relatively rotate between top and workpiece; When people rotates for stirring workpiece, relatively rotate between top and workpiece.The jitter values A1 closest to the top 1 axle journal place of headstock bikini is measured with preprepared magnetic stand 5, extension bar 6 and dial gauge 7, jitter values is the mobility scale according to dial gauge instruction, evaluation, the effect of magnetic stand is the base as survey tool, be adsorbed on lathe, to measure, extension bar is for connecting dial gauge and magnetic stand.
Crawl lathe button makes it stop operating again, and people, for stirring workpiece by rotating clockwise about 90 degree of (see figure 7)s, then repeating above-mentioned steps: crawl lathe button, driving workpiece crawl to rotate, Jumping in recording value A2 by the heart carrier for bolt driving lever 4 of lathe; By that analogy, people is for stirring workpiece by rotating clockwise about 180,270 degree respectively, by above-mentioned steps Jumping in recording value A3, A4 respectively.By difference and the A of maxima and minima in A1 ~ A4
max-A
mindifference as centre bore lose circle decision content.
Said method gets 0 °, 90 °, 180 ° and 270 ° of positions are measured, and also can get more points and measure in practical operation, but in general, measure at 4 and just can reflect the mistake circle situation of centre bore completely.Use this detection method, solve the accurate test problems that center hole of shaft part loses circle well, clear and definite, the exercisable control overflow of control proposition of circle can be lost centre bore.Usually, for the centre bore of pilot process, lose circle situation and will control within 0.05, be i.e. Amax-Amin≤0.05; For the centre bore of precision grinding process, different according to the requirement of the circularity of workpiece axle journal, should control within 0.02, i.e. Amax-Amin≤0.02.
Claims (5)
1. center hole of shaft part loses a detection method for circle, it is characterized in that, comprises the steps:
(1) by the lathe coordinated with workpiece center hole with top spare part to change system into detection bikini top;
(2) by after top for the holotype headstock of normal grinding work piece taking off, be installed on the machine tool headstock of grinding work piece by top for this bikini, form headstock bikini top;
(3) work piece hoisting centre bore to be checked being lost circle to the enterprising luggage folder of lathe, with marking pen headstock bikini top with workpiece on make a check mark with stain respectively;
(4) crawl lathe button, drives workpiece crawl to rotate by the heart carrier for bolt driving lever of lathe;
(5) measure the jitter values A1 closest to the top axle journal place of headstock bikini, jitter values is the mobility scale that dial gauge indicates;
(6) crawl lathe button makes it stop operating again, and people, for stirring workpiece by rotating clockwise about 90 degree, then repeats above-mentioned steps: crawl lathe button, drives workpiece crawl to rotate, Jumping in recording value A2 by the heart carrier for bolt driving lever of lathe;
(7) by step (6) respectively people for stirring workpiece by rotating clockwise about 180,270 degree, and respectively Jumping in recording value A3, A4;
(8) by A in A1 to A4
max-A
mindifference lose the decision content of circle as centre bore, inspection center hole can lose circle situation according to decision content.
2. center hole of shaft part as claimed in claim 1 loses the detection method of circle, it is characterized in that, in described step (1), transformation of the way mode is tool grinder or the wire cutting machine transformation of the way.
3. center hole of shaft part as claimed in claim 1 loses the detection method of circle, it is characterized in that, the bikini changed a social system of described step (1) is top only retains 3 contacts site, place, and the width of every two contacts site is 2 ~ 3mm, about in 120 degree of distributions.
4. center hole of shaft part as claimed in claim 1 loses the detection method of circle, and it is characterized in that, in described step (3), on workpiece, centre bore one end to be checked coordinates with headstock bikini is top, and workpiece other end centre bore coordinates with tailstock back dead centre.
5. center hole of shaft part as claimed in claim 1 loses the detection method of circle, and it is characterized in that, in described step (5), the described instrument for measuring jitter values is magnetic stand, extension bar and dial gauge, and dial gauge is connected by extension bar with magnetic stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510847396.8A CN105415179B (en) | 2015-11-30 | 2015-11-30 | A kind of center hole of shaft part loses the detection method of circle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510847396.8A CN105415179B (en) | 2015-11-30 | 2015-11-30 | A kind of center hole of shaft part loses the detection method of circle |
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| Publication Number | Publication Date |
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| CN105415179A true CN105415179A (en) | 2016-03-23 |
| CN105415179B CN105415179B (en) | 2018-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510847396.8A Active CN105415179B (en) | 2015-11-30 | 2015-11-30 | A kind of center hole of shaft part loses the detection method of circle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867307A (en) * | 2016-04-06 | 2016-08-17 | 中国南方航空工业(集团)有限公司 | High-speed dynamic balance restoration method for transmission shaft |
| CN109590829A (en) * | 2017-09-30 | 2019-04-09 | 侯马市东鑫机械铸造有限公司 | A kind of Crankshaft Machining school detecting method of frame correction and bearing movable precision end to end |
| CN109693175A (en) * | 2019-01-26 | 2019-04-30 | 特福隆（上海）科技有限公司 | A kind of rotor bore grinder |
| CN110509115A (en) * | 2019-08-27 | 2019-11-29 | 江阴塞特精密工具有限公司 | A kind of the high-precision grinding technique and application of elongated shaft |
| CN112296760A (en) * | 2020-11-17 | 2021-02-02 | 中国航发沈阳黎明航空发动机有限责任公司 | Method for correcting coaxiality of journal type blades |
| CN112504058A (en) * | 2020-12-18 | 2021-03-16 | 贵州华烽电器有限公司 | Sleeve part circle run-out detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867307A (en) * | 2016-04-06 | 2016-08-17 | 中国南方航空工业(集团)有限公司 | High-speed dynamic balance restoration method for transmission shaft |
| CN105867307B (en) * | 2016-04-06 | 2018-09-11 | 中国南方航空工业(集团)有限公司 | High-speed balancing restorative procedure for transmission shaft |
| CN109590829A (en) * | 2017-09-30 | 2019-04-09 | 侯马市东鑫机械铸造有限公司 | A kind of Crankshaft Machining school detecting method of frame correction and bearing movable precision end to end |
| CN109693175A (en) * | 2019-01-26 | 2019-04-30 | 特福隆（上海）科技有限公司 | A kind of rotor bore grinder |
| CN110509115A (en) * | 2019-08-27 | 2019-11-29 | 江阴塞特精密工具有限公司 | A kind of the high-precision grinding technique and application of elongated shaft |
| CN110509115B (en) * | 2019-08-27 | 2020-07-14 | 江阴塞特精密工具有限公司 | High-precision grinding process and application of slender shaft |
| CN112296760A (en) * | 2020-11-17 | 2021-02-02 | 中国航发沈阳黎明航空发动机有限责任公司 | Method for correcting coaxiality of journal type blades |
| CN112504058A (en) * | 2020-12-18 | 2021-03-16 | 贵州华烽电器有限公司 | Sleeve part circle run-out detection method |
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