CN101112722A - Process for improving the accuracy of manufacturing of precision boring head - Google Patents
Process for improving the accuracy of manufacturing of precision boring head Download PDFInfo
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- CN101112722A CN101112722A CNA200710012350XA CN200710012350A CN101112722A CN 101112722 A CN101112722 A CN 101112722A CN A200710012350X A CNA200710012350X A CN A200710012350XA CN 200710012350 A CN200710012350 A CN 200710012350A CN 101112722 A CN101112722 A CN 101112722A
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- main shaft
- precision
- boring head
- precision boring
- bearing sleeve
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Abstract
A method improving the manufacture precision of precision boring head includes the steps that the secondary aging treatment is carried out after the roughing process is carried out to a main shaft box body (16); the half-precision process is carried out to the main shaft box body (16), and a front bearing hole (20) and a rear bearing hole (22) are preserved with the processing allowance ranging from 0.05 mm to 0.06 mm; after the inspection is approved, the main shaft box body (16) is finish machined into the finished products according to the design requirement; the hole diameter of the front bearing hole (20) is actually measured; a spigot external round (21) on a front bearing sleeve (6) is matched and grinded according to the actually measure values; the geometric tolerance of the internal hole (19) of the front bearing sleeve (6) is actually measured, and the manual grinding disposal is adopted when the actually measured numerical values are oversize in the fourth step to reach the design requirement; a positioning pin (18) is adopted for positioning between the main shaft box body (16) and the front bearing sleeve (6). By adopting the method, when all work pieces are processed, the problems produced are timely and reasonably solved, and the integration manufacture precision of the precision boring is improved, and the boring process of the high precision work pieces can be satisfied.
Description
Technical field
The present invention relates to a kind of method that improves the machining apparatus precision, particularly a kind of method that improves the accuracy of manufacturing of precision boring head.
Background technology
The precision boring head device is the critical piece in the fine boring machine, the conventional method of assembling precision boring head is fairly simple at present, just each part is directly installed by the assembling drawing and got final product, the error of seldom considering and in time being produced in the processing part process, as preceding, the form and position tolerance in rear bearing hole, whether the elastic force size of each stressed spring uniformity, assembling back main shaft can bear the ability of axial force etc., this simple assembling makes the whole accuracy of manufacture of precision boring head not high, when with the higher workpiece of the required precisions such as cylinder diameter on its boring engine cylinder-body, be difficult to reach required precision.
Summary of the invention
The purpose of this invention is to provide a kind ofly assemble the whole accuracy of manufacture height in back, applicable to the method for the raising the accuracy of manufacturing of precision boring head of high-precision part processing, particularly engine bore boring, overcome the deficiencies in the prior art.
The method of raising the accuracy of manufacturing of precision boring head of the present invention comprises the steps:
1., main shaft casing 16 being carried out after the roughing secondary ageing handles;
2., main shaft casing 16 is carried out semifinishing, and make fore bearing hole 20 and rear bearing hole 22 leave 0.05～0.06 millimeter allowance, be finish-machined to finished product by designing requirement again after the passed examination;
3., the aperture in fore bearing hole 20 is surveyed, the seam cylindrical 21 on the front axle bearing sleeve 6 that cooperates with it by the measured value match grinding;
4., the form and position tolerance of the endoporus 19 of front axle bearing sleeve 6 is surveyed;
5., above-mentioned the adopt manual grinding to handle when 4. the step measured value is overproof, make it to reach designing requirement, and between main shaft casing 16 and front axle bearing sleeve 6, adopt alignment pin 18 location.
The method of raising the accuracy of manufacturing of precision boring head of the present invention is wherein surveyed selection to the stressed spring 14 in the precision boring head, and the elastic force uniformity of each spring 14 and total elastic force are adhered to specification.
The method of raising the accuracy of manufacturing of precision boring head of the present invention is wherein carried out the actual measurement of main shaft axial force to the precision boring head after the assembling, to not meeting the processing of matching spring 14 again of designing requirement.
The method of raising the accuracy of manufacturing of precision boring head of the present invention, because the forward and backward dead eye of main shaft casing is left suitable surplus when the semifinishing, in assembling process, the form and position tolerance of forward and backward dead eye and bearing holder (housing, cover) is surveyed and in time handle, spring is reasonably matched, and to assemble the back main shaft axial holding capacity survey, each workpiece in time reasonably is resolved adding the problem that produces man-hour, improve the whole accuracy of manufacture of precision boring head, can satisfy the boring processing of high-precision workpiece.
Description of drawings
Fig. 1 is the structural representation according to the precision boring head of the method assembling of raising the accuracy of manufacturing of precision boring head of the present invention;
Fig. 2 is the main shaft casing 16 shown in Figure 1 and the structural representation of front axle bearing sleeve 6;
Fig. 3 is the structural representation of main shaft casing 16;
Fig. 4 is the structural representation of front axle bearing sleeve 6;
Fig. 5 is the schematic diagram of front axle bearing sleeve 6 endoporus;
Fig. 6 is a left cross-sectional schematic shown in Figure 5.
The specific embodiment
As shown in Figure 1: 16 is the main shaft casing, adopts casting technique and machined moulding.Right-hand member at main shaft casing 16 is fixed with front axle bearing sleeve 6 and gland 4 with bolt 3, and main shaft 1 usefulness fore bearing 5, intermediate bearing 8, rear bearing 17 are supported on the main shaft casing 16; Screw is connected with end cap 2 in the side of fore bearing 5; Between intermediate bearing 8 and main shaft casing 16, intermediate bearing sleeve 9 is arranged; Be with locating ring 7 on the main shaft 1 between fore bearing 5 and the intermediate bearing 8; With bolt 11 bearing cap 12 is fixedly connected on the intermediate bearing sleeve 9 and between intermediate bearing 8 and bearing cap 12 and is provided with locating ring 10; Be evenly distributed with the blind hole that places spring 14 on main shaft casing 16 inside circumference, packing ring 13 is between the right-hand member and bearing cap 12 of spring 14, and the left end of spring 14 leans on pad 15, and pad 15 is positioned at the bottom of blind hole.
Include following steps during process and assemble:
After the Ageing Treatment, can carry out semifinishing to main shaft casing 16, and make fore bearing hole 20 on the main shaft casing 16 and rear bearing hole 22 all leave the allowance of 0.05 millimeter or 0.052 millimeter or 0.054 millimeter or 0.056 meter or 0.058 millimeter or 0.06 millimeter, be that allowance is controlled between 0.05～0.06 millimeter and all can, check by the specification requirement of processing with three coordinate machine then, be finish-machined to finished product by designing requirement again after qualified.
Survey in aperture to fore bearing hole 20, and the seam cylindrical 21 on the front axle bearing sleeve 6 that cooperates with it by the measured value match grinding makes it to reach the quality of fit of design.
Form and position tolerance to the endoporus 19 of front axle bearing sleeve 6 is surveyed, if the numerical value after the actual measurement is overproof, adopt the sand paper manual grinding to handle, make it and rear bearing hole 22 between position of related features reach designing requirement, the form tolerance of self also within claimed range, installs alignment pin 18 location additional then between main shaft casing 16 and front axle bearing sleeve 6.If actual measurement meets the requirements, can establish alignment pin.The measurement of endoporus 19 self form tolerance can be adopted following method: shown in Fig. 5,6: 8 positions of measuring the aperture with internal diameter measuring instrument, be two cross sections at bearing roller place, both sides, begin by the center vertical direction, each 45 ° of measurement once, during measurement, at first measure vertical direction O-O in the middle of the outer ring, with amesdial to zero, press A-a among Fig. 5,6, B-b, the proceeding measurement aperture of-----H-h, the record measured value, according to measured value, be endoporus 19 with sand papering outer race mating holes, till qualified.
Stressed spring 14 in the precision boring head device is 6, evenly distributes on circumference, and the elastic force of each spring should uniformity, will guarantee also that simultaneously total holding capacity reaches design point, otherwise also can influence its precision.Therefore need survey the elastic force of each spring, select the spring of elastic force uniformity, and total stressed should adhering to specification.
Except that above-mentioned steps, still undertaken by traditional processing step.
After the whole assembling, the axial force of main shaft 1 is surveyed, as do not reach designing requirement, can readjust, reselect spring spring 14.Its measurement method can be: by bolt 3 bracing frame is fixed on the main shaft casing 16, the endoporus place is provided with the axle head pad in the termination of main shaft 1, on the force bearing plate on the bracing frame, be provided with the nut-screw device, between the termination of screw rod and axle head pad, be provided with dynamometer, when rotating nut, screw rod moves and leans dynamometer, axle head pad, main shaft 1 and moves axially, simultaneously by intermediate bearing 8, intermediate bearing sleeve 9, bearing cap 12, packing ring 13 compression springs 14, according to the axial holding capacity situation of the clear and definite main shaft 1 of the shown numerical value of dynamometer.If undesirable, can readjust spring 14.
Claims (3)
1. a method that improves the accuracy of manufacturing of precision boring head is characterized in that: comprise the steps:
1., main shaft casing (16) being carried out after the roughing secondary ageing handles;
2., main shaft casing (16) is carried out semifinishing, and make fore bearing hole (20) and rear bearing hole (22) leave 0.05～0.06 millimeter allowance, be finish-machined to finished product by designing requirement again after the passed examination;
3., the aperture of fore bearing hole (20) is surveyed, the seam cylindrical (21) on the front axle bearing sleeve (6) that cooperates with it by the measured value match grinding;
4., the form and position tolerance of the endoporus (19) of front axle bearing sleeve (6) is surveyed;
5., above-mentioned the adopt manual grinding to handle when 4. the step measured value is overproof, make it to reach designing requirement, and between main shaft casing (16) and front axle bearing sleeve (6), adopt alignment pin (18) to locate.
2. the method for raising the accuracy of manufacturing of precision boring head according to claim 1 is characterized in that: the stressed spring (14) in the precision boring head is surveyed selection, the elastic force uniformity of each spring (14) and total elastic force are adhered to specification.
3. the method for raising the accuracy of manufacturing of precision boring head according to claim 1 is characterized in that: the precision boring head after the assembling is carried out the actual measurement of main shaft axial force, to not meeting the processing of matching spring (14) again of designing requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710012350XA CN100569422C (en) | 2007-08-02 | 2007-08-02 | Improve the installation method of the precision boring head of processing work precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710012350XA CN100569422C (en) | 2007-08-02 | 2007-08-02 | Improve the installation method of the precision boring head of processing work precision |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101112722A true CN101112722A (en) | 2008-01-30 |
| CN100569422C CN100569422C (en) | 2009-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710012350XA Expired - Fee Related CN100569422C (en) | 2007-08-02 | 2007-08-02 | Improve the installation method of the precision boring head of processing work precision |
Country Status (1)
| Country | Link |
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| CN (1) | CN100569422C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104647146A (en) * | 2015-02-06 | 2015-05-27 | 湖南大学 | Grinding machine accuracy circular ascending method on basis of hydrostatic pressure spindle part |
| CN110757342A (en) * | 2019-10-16 | 2020-02-07 | 南京钢铁股份有限公司 | Method for quickly replacing projectile head |
-
2007
- 2007-08-02 CN CNB200710012350XA patent/CN100569422C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104647146A (en) * | 2015-02-06 | 2015-05-27 | 湖南大学 | Grinding machine accuracy circular ascending method on basis of hydrostatic pressure spindle part |
| CN110757342A (en) * | 2019-10-16 | 2020-02-07 | 南京钢铁股份有限公司 | Method for quickly replacing projectile head |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100569422C (en) | 2009-12-16 |
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| C06 | Publication | ||
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20080704 Address after: No. 100, Liaohe East Road, Shuang D port, Liaoning, Dalian Applicant after: Dalian Huagen Machinery Co., Ltd. Address before: No. 38, Anshan Road, Dalian, Liaoning province (Dalian machine tool Refco Group Ltd) Applicant before: Dalian Machine-Tool Group Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20150802 |
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| EXPY | Termination of patent right or utility model |