CN202985325U - Grinding tool for improving processing precision of deep long through hole - Google Patents

Grinding tool for improving processing precision of deep long through hole Download PDF

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Publication number
CN202985325U
CN202985325U CN 201220495104 CN201220495104U CN202985325U CN 202985325 U CN202985325 U CN 202985325U CN 201220495104 CN201220495104 CN 201220495104 CN 201220495104 U CN201220495104 U CN 201220495104U CN 202985325 U CN202985325 U CN 202985325U
Authority
CN
China
Prior art keywords
sleeve
mandrel
hole
profound
milling tool
Prior art date
Application number
CN 201220495104
Other languages
Chinese (zh)
Inventor
曾金龙
舒勇东
刘洪文
彭志虹
Original Assignee
中国电子科技集团公司第四十八研究所
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Application filed by 中国电子科技集团公司第四十八研究所 filed Critical 中国电子科技集团公司第四十八研究所
Priority to CN 201220495104 priority Critical patent/CN202985325U/en
Application granted granted Critical
Publication of CN202985325U publication Critical patent/CN202985325U/en

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Abstract

The utility model discloses a grinding tool for improving the processing precision of a deep long through hole. The grinding tool for improving the processing precision of the deep long through hole aims to solve the problems that the traditional processing method has difficulty in meeting the requirements of the inner wall roughness and the aperture size precision of the deep long through hole. The grinding tool for improving the processing precision of the deep long through hole comprises a mandrel and a sleeve, wherein the sleeve is sleeved on the mandrel, the mandrel has a taper, a plurality of deformation grooves are formed in the outer wall of the sleeve in the axial direction of the sleeve, and the outer diameter of the sleeve can be adjusted by the deformation grooves when the sleeve moves in the axial direction of the mandrel. According to the grinding tool for improving the processing precision of the deep long through hole, due to the outer diameter of the sleeve can be adjusted, the grinded deep long through hole is enabled to meet the using requirements.

Description

A kind of milling tool that improves profound through hole machining accuracy
Technical field
The utility model relates to a kind of milling tool, is specially a kind of milling tool that improves profound through hole machining accuracy.
Background technology
Described profound through hole is to belong to the ratio of aperture and hole length less than the through hole of 1:10, take processing with the valve body and similar parts of profound through hole as example, the aperture of this profound through hole reaches 1:10 with the ratio of hole length, hole tolerance requires in 0.02mm, the aperture size required precision is IT6, surface roughness requires to be fine finishining grade Ra0.8, and along being drilled with the aperture that some communicate with it on the hole wall of the axis direction of profound through hole.
Traditional processing technology adopts turning, grinding and ream, is difficult to reach the aperture size required precision of profound through hole and the requirement of inner bore surface roughness, thereby is difficult to reach the instructions for use of part.
The utility model content
Be difficult to make the inner wall roughness of profound through hole and the deficiency of aperture size required precision in order to overcome tradition processing gimmick, the utility model aims to provide a kind of milling tool that improves profound through hole machining accuracy, this milling tool can be by the external diameter of regulating sleeve, from but the profound through hole that grinds satisfies instructions for use.
To achieve these goals, the technical scheme that adopts of the utility model is:
A kind of milling tool that improves profound through hole machining accuracy, its design feature are to comprise mandrel and the sleeve that is sleeved on mandrel; Described mandrel has tapering, and the outer wall of described sleeve is along having many distortion grooves on the sleeve axial direction, and the distortion groove can be adjusted the external diameter of sleeve when sleeve moves axially along mandrel.
Below to further improvement of the utility model.
The tapering of mandrel described in the utility model is 1 ° 20 " ~ 1 ° 40 ".
The described mandrel two ends nut that has been threaded, described sleeve are between the nut at two ends, and thus by regulating nut, thereby the sleeve that makes moves axially along mandrel, thereby make sleeve outer diameter become large or diminish, thereby realize the purpose of regulating sleeve external diameter.
Further, described sleeve endoporus also has tapering, and the aperture of the end that sleeve endoporus aperture is little guarantees that greater than the external diameter of described mandrel at this place sleeve can move relative to the mandrel axial reciprocating.
Described distortion groove circumferential arrangement is in the periphery of sleeve.
According to embodiment of the present utility model, described distortion groove is the six roots of sensation.
The inner and outer wall of at least part of perforation sleeve of described distortion groove thus by extruding, can enlarge the external diameter of sleeve.
By said structure, the utility model is a kind of milling tool of regulating external diameter, and mainly by sleeve, mandrel and nut form.Sleeve adopts cast iron materials, and endoporus adopts 1 ° of 30 " tapering to match with the mandrel tapering, and has altogether vertically 6 distortion grooves.Mandrel and nut all adopt 45 Steel materials, by nut advance and retreat regulating sleeve size.
Compared with prior art, the beneficial effects of the utility model are: the utility model can be according to the variation in part aperture in process, the advance and retreat of utilizing nut are the diameter of regulating sleeve at any time, make the precision of the profound through hole after grinding reach dimensional requirement, and eliminated the deep hole tapering, improve the service life of part.
Below in conjunction with drawings and Examples, the utility model is further elaborated.
Description of drawings
Fig. 1 is the structure principle chart of a kind of embodiment of the utility model;
Fig. 2 is the structural representation of described sleeve.
In the drawings
The 1-sleeve; The 2-nut; The 3-mandrel; 4-is out of shape groove.
The specific embodiment
A kind of milling tool that improves profound through hole machining accuracy as shown in Figure 1, comprises mandrel 3 and the sleeve 1 that is sleeved on mandrel 3; Described mandrel 3 has 1 ° 30 " tapering, the outer wall of described sleeve 1 along have on sleeve 1 axial direction six the distortion grooves 4, make sleeve 1 can adjust the external diameter of sleeve 1 when mandrel 3 moves axially.The described mandrel 3 two ends nut 3 that has been threaded, described sleeve 1 is between the nut 3 at two ends, left and right.Described sleeve 1 endoporus has tapering, and the aperture of sleeve 1 left end portion is greater than the external diameter of described mandrel 3 at this place, and thus, sleeve 1 mandrel 3 relatively moves left and right.When nut 3 drive sleeve 1 were moved to the left, the distortion groove 4 on sleeve was close to mandrel 3 to the axis direction extruding of mandrel 3, and sleeve 1 right part external diameter diminishes; When nut 3 drive sleeve 1 moved right, the distortion groove 4 on sleeve was close to the axis direction extruding that core 3 axially deviates from mandrel 3, and sleeve 1 right part external diameter becomes large.As shown in Figure 2, six described distortion grooves 4 circumferentially are arranged in the periphery of sleeve 1 equably.The inner and outer wall of at least part of perforation sleeve 1 of described distortion groove 4, the convenient external diameter of adjusting sleeve 1.
Take processing with the valve body and similar parts of profound through hole as example, the aperture of this profound through hole reaches 1:10 with the ratio of hole length, hole tolerance requires in 0.02mm, the aperture size required precision is IT6, the surface roughness requirement is fine finishining grade R a0.8, and along being drilled with the aperture that some communicate with it on the hole wall of the axis direction of profound through hole.
Concrete process is as follows:
1), the valve body and similar parts of thick, the profound through hole of finish turning band, stay approximately 0.14mm as subsequent fine allowance.
2), finish ream with adjustable reamer, stay 0.08mm as grind.
3), will unload from lathe with the valve body and similar parts of profound through hole, with rotating disk, workpiece is erect clamping, rough lapping cream and kerosene are added in the groove of adjustable milling tool of the present utility model, then push while rotating in profound through hole, above-below direction slightly grinds.
4), measure hole dimension in profound through hole, regulate two ends nut 2, add fine paste and kerosene, carry out lappingout, repeated measurement, regulating nut 2 positions change the diameter that grinds overcoat 1 at any time, after making grinding, the endoporus dimensional accuracy reaches requirement, and surface roughness is Ra0.8.
The content that above-described embodiment is illustrated should be understood to these embodiment and only is used for being illustrated more clearly in the utility model, and be not used in the restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present utility model.

Claims (7)

1. a milling tool that improves profound through hole machining accuracy, is characterized in that, comprises mandrel (3) and be sleeved on sleeve (1) on mandrel (3); Described mandrel (3) has tapering, and the outer wall of described sleeve (1) is out of shape along having many distortion grooves (4) on sleeve (1) axial direction the external diameter that groove (4) can be adjusted sleeve (1) when moving axially along mandrel (3) when sleeve (1).
2. the milling tool of the profound through hole machining accuracy of raising according to claim 1, is characterized in that, the tapering of described mandrel is 1 ° 20 " ~ 1 ° 40 ".
3. the milling tool of the profound through hole machining accuracy of raising according to claim 1, is characterized in that, described mandrel (3) the two ends nut (3) that has been threaded, and described sleeve (1) is positioned between the nut (3) at two ends.
4. the milling tool of the profound through hole machining accuracy of raising according to claim 1, is characterized in that, described sleeve (1) endoporus has tapering, and the aperture of the end that sleeve (1) endoporus aperture is little is greater than the external diameter of described mandrel (3) at this place.
5. the milling tool of one of according to claim 1 ~ 4 profound through hole machining accuracies of described raising, is characterized in that, described distortion groove (4) circumferential arrangement is in the periphery of sleeve (1).
6. the milling tool of the profound through hole machining accuracy of raising according to claim 5, is characterized in that, described distortion groove (4) is the six roots of sensation.
7. the milling tool of the profound through hole machining accuracy of raising according to claim 5, is characterized in that, the inner and outer wall of at least part of perforation sleeve of described distortion groove (4) (1).
CN 201220495104 2012-09-26 2012-09-26 Grinding tool for improving processing precision of deep long through hole CN202985325U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220495104 CN202985325U (en) 2012-09-26 2012-09-26 Grinding tool for improving processing precision of deep long through hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220495104 CN202985325U (en) 2012-09-26 2012-09-26 Grinding tool for improving processing precision of deep long through hole

Publications (1)

Publication Number Publication Date
CN202985325U true CN202985325U (en) 2013-06-12

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CN 201220495104 CN202985325U (en) 2012-09-26 2012-09-26 Grinding tool for improving processing precision of deep long through hole

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103341817B (en) * 2013-06-21 2015-06-03 中国科学院上海技术物理研究所 Inner hole grinding mandril with freely-adjusted outer diameter and manufacturing method thereof
CN104742010A (en) * 2015-03-31 2015-07-01 中国科学院上海技术物理研究所 High-precision deep-hole grinding core rod of plastic grinding body
CN105364700A (en) * 2015-12-01 2016-03-02 中国科学院上海技术物理研究所 Ceramic blind hole grinding mandrel for precisely grinding blind hole
CN105563316A (en) * 2015-12-15 2016-05-11 贵州凯星液力传动机械有限公司 Processing device for great-length-to-diameter-ratio deep hole control valve
CN108723980A (en) * 2018-05-24 2018-11-02 中航动力株洲航空零部件制造有限公司 For the mill of precision deep bore processing and the grinding method of precision deep bore

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103341817B (en) * 2013-06-21 2015-06-03 中国科学院上海技术物理研究所 Inner hole grinding mandril with freely-adjusted outer diameter and manufacturing method thereof
CN104742010A (en) * 2015-03-31 2015-07-01 中国科学院上海技术物理研究所 High-precision deep-hole grinding core rod of plastic grinding body
CN104742010B (en) * 2015-03-31 2017-03-15 中国科学院上海技术物理研究所 A kind of plastics grind body High-precision Deep Hole grinds plug
CN105364700A (en) * 2015-12-01 2016-03-02 中国科学院上海技术物理研究所 Ceramic blind hole grinding mandrel for precisely grinding blind hole
CN105563316A (en) * 2015-12-15 2016-05-11 贵州凯星液力传动机械有限公司 Processing device for great-length-to-diameter-ratio deep hole control valve
CN108723980A (en) * 2018-05-24 2018-11-02 中航动力株洲航空零部件制造有限公司 For the mill of precision deep bore processing and the grinding method of precision deep bore

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