CN202763670U - External grinding machining tool for hollow shafts - Google Patents

External grinding machining tool for hollow shafts Download PDF

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Publication number
CN202763670U
CN202763670U CN 201220507334 CN201220507334U CN202763670U CN 202763670 U CN202763670 U CN 202763670U CN 201220507334 CN201220507334 CN 201220507334 CN 201220507334 U CN201220507334 U CN 201220507334U CN 202763670 U CN202763670 U CN 202763670U
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CN
China
Prior art keywords
hollow shaft
expansion sleeve
mandrel
elastic expansion
type parts
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.)
Expired - Fee Related
Application number
CN 201220507334
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Chinese (zh)
Inventor
刘学战
张建省
李怀永
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHENGZHOU SONGYANG COAL MACHINE MANUFACTURING CO LTD
Original Assignee
ZHENGZHOU SONGYANG COAL MACHINE MANUFACTURING CO LTD
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHENGZHOU SONGYANG COAL MACHINE MANUFACTURING CO LTD filed Critical ZHENGZHOU SONGYANG COAL MACHINE MANUFACTURING CO LTD
Priority to CN 201220507334 priority Critical patent/CN202763670U/en
Application granted granted Critical
Publication of CN202763670U publication Critical patent/CN202763670U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an external grinding machining tool for hollow shafts. The external grinding machining tool comprises a mandrel and an elastic expansion sleeve, wherein the mandrel is concentrically penetratingly arranged in an inner hollow of a hollow shaft part, the elastic expansion sleeve capable of radially contracting and expanding is used for being inserted between the outer surface of the mandrel and the wall of the inner hole of the hollow shaft part, central positioning holes are respectively arranged at two ends of the mandrel, the outer surface of the elastic expansion sleeve is a cylindrical surface, truncated conical surfaces which are correspondingly matched with each other are respectively arranged on the inner wall surface of the elastic expansion sleeve and the outer surface of the mandrel, and a pushing mechanism is further arranged at a small-diameter end of the truncated conical surface of the mandrel and is used for pushing the elastic expansion sleeve to axially slide towards a large-diameter end of the truncated conical surface of the mandrel, so that the outer surface of the elastic expansion sleeve is fittingly abutted to the wall of the inner hole of the hollow shaft part under the action of the truncated conical surfaces matched with each other. The external grinding machining tool for the hollow shafts is simple in structure, convenient to assemble and disassemble and reliable in use, the hollow shaft part machining efficiency is improved, and the external grinding machining tool can be widely applied to mass production.

Description

Hollow shaft Cylindrical Grinding Processes frock
Technical field
The utility model relates to a kind of processing tool of hollow shaft, and definite saying relates to a kind of processing tool for processing hollow shaft cylindrical structure.
Background technology
The hollow shaft type parts of through hole is axially offered in frequent use in plant equipment, need to carry out grinding with grinding machine for the higher hollow shaft type parts of requirement on machining accuracy and finish.Existing processing to hollow shaft type parts is the cylindrical that blocks first the hollow shaft part on grinding machine with scroll chuck, wear into endoporus, then in two stomidiums of hollow shaft part, insert respectively the straight pin that outer surface offers center positioning hole, adopt tight fit guaranteeing the location between hollow shaft part and the straight pin between straight pin and the hollow shaft part, the straight pin that at last hollow shaft type parts is inserted by two ends is clamped in grinding cylindrical in the center positioning hole of straight pin with the Double Tops point.1., the plug of straight pin difficulty comparatively employing is inserted the straight pin locate mode and is had following defective at the hollow shaft type parts two ends:, use inconvenience; 2., when straight pin being inserted in the hole of hollow shaft part, the hollow shaft type parts endoporus that weares and teares easily causes the endoporus dimensional accuracy of hollow shaft type parts to descend; 3., because the wall thickness of hollow shaft type parts is usually thinner, thereby straight pin makes the two ends of hollow shaft type parts produce distortion when inserting hollow shaft type parts easily, affects hollow shaft type parts Excircle machining precision; 4., straight pin its outer fenestra after repeatedly using can produce wearing and tearing, causes the endoporus matching loose of straight pin and hollow shaft type parts so that the concentricity between rear its cylindrical of hollow shaft type parts processing and the endoporus is relatively poor, the qualification rate decline of product.
The utility model content
The purpose of this utility model is: a kind of easy to use, hollow shaft Cylindrical Grinding Processes frock that machining accuracy is high is provided.
The technical solution of the utility model is: a kind of hollow shaft Cylindrical Grinding Processes frock, comprise for the mandrel that is located in one heart the hollow shaft type parts endoporus and reach the elastic expansion sleeve that between mandrel outer surface and hollow shaft type parts inner hole wall, can radially actuate for sleeve, the two ends of described mandrel have center positioning hole, the outer surface of described elastic expansion sleeve is the face of cylinder, the internal face of described elastic expansion sleeve and the outer surface of mandrel are respectively equipped with the frusto-conical face of corresponding matching, also are provided with at the miner diameter end place that described mandrel is positioned at frusto-conical face for promoting elastic expansion sleeve to slide to mandrel butt annular conical surface bigger diameter end vertically, thereby make elastic expansion sleeve outer surface and hollow shaft type parts inner hole wall push up friction tight top-pushing mechanism by the frusto-conical face that cooperatively interacts.
Described top-pushing mechanism comprises that being positioned at the frusto-conical face miner diameter end on the mandrel extends axially screw rod and the nut of spinning on screw rod that sets firmly.
Also be arranged be used to the top cover that is mounted between nut and the elastic expansion sleeve on the described screw rod.
Also radial convex is provided with the gear edge that cooperates for the block of corresponding outer face with hollow shaft type parts at bigger diameter end place that described mandrel is positioned at frusto-conical face.
Offer respectively the opening that connects jacket wall inside and outside it along its longitudinally at the two ends of described elastic expansion sleeve, the opening at elastic expansion sleeve two ends is interspersed along even circumferential.
The end that is positioned at each opening at described elastic expansion sleeve also is communicated with respectively and is provided with radial direction through hole, and the diameter of through hole is greater than the gap of corresponding opening.
Thereby making elastic expansion sleeve produce to be radially expanded by frusto-conical face in the insertion of the mandrel in the hollow shaft Cylindrical Grinding Processes frock of the present utility model elastic expansion sleeve holds out against on the inner hole wall of hollow shaft type parts; owing to when frock is loaded and unloaded, do not have axial displacement between the inner hole wall of elastic expansion sleeve outer surface and hollow shaft type parts; thereby reduced and produced wearing and tearing between clamping process hollow mandrel class inner bore of part wall and the elastic expansion sleeve outer surface; not only protected the dimensional accuracy of hollow shaft type parts inner hole wall; and; elastic expansion sleeve cooperates stable with the hollow shaft type parts inner hole wall; thereby improved the grinding accuracy of hollow shaft type parts outer surface; it is simple in structure; easy to loading and unloading; use reliable; improved the working (machining) efficiency of hollow shaft type parts, can extensive use in production in enormous quantities.
Description of drawings
Fig. 1 is the structural representation of the utility model hollow shaft Cylindrical Grinding Processes frock specific embodiment;
Fig. 2 is the structural representation of Fig. 1 Elastic expansion set.
The specific embodiment
The specific embodiment of hollow shaft Cylindrical Grinding Processes frock of the present utility model as shown in Figure 1 and Figure 2, this frock has one and is used for sleeve at the elastic expansion sleeve 1 and the mandrel 2 that is inserted in this elastic expansion sleeve 1 of hollow shaft type parts 5 endoporus, the two ends of this elastic expansion sleeve 1 offer the opening 12 that connects jacket wall inside and outside it along its longitudinally respectively, each opening 12 at elastic expansion sleeve 1 two ends is interspersed along even circumferential, also is communicated with respectively at the end of each opening 12 to be provided with diameter greater than the radial direction through hole of opened gap.The outer surface of this elastic expansion sleeve 1 is the face of cylinder, the internal face 11 of this elastic expansion sleeve 1 is the frusto-conical face that internal diameter from one end to the other side strengthens gradually, with the outer surface 20 of mandrel 2 on the corresponding frusto-conical face that cooperatively interacts with elastic expansion sleeve 1 internal face that is provided with, the miner diameter end that is positioned at its frusto-conical face at mandrel 2 also is provided with for promoting elastic expansion sleeve 1 and slides vertically, make elastic expansion sleeve 1 outer surface shore top-pushing mechanism on hollow shaft type parts 5 inner hole walls by the frusto-conical face that cooperatively interacts, in the present embodiment, this top-pushing mechanism comprises that extending axially one is fixedly arranged on spiro rod section 21 on the mandrel 2, be set with a top cover 3 on the spiro rod section 21, be installed with by top cover 3 at the end of spiro rod section 21 and hold out against nut 4 on elastic expansion sleeve 1, the bigger diameter end that is positioned at its frusto-conical face at mandrel 2 also radial convex is provided with for the gear that cooperates with hollow shaft type parts 5 outer face blocks along 22.
During use, be inserted in the endoporus of hollow shaft type parts 5 after being enclosed within elastic expansion sleeve 1 on the mandrel 2, the gear that is convexly equipped with on the mandrel 2 cooperates with the outer face block of hollow shaft type parts 5 one ends along 22, then successively top cover 3 and nut 4 are packed on the spiro rod section 21 of mandrel 2, by spanner rotating nut 4, promoting elastic expansion sleeve 1 by top cover 3 moves axially along mandrel 2, in elastic expansion sleeve 1 moving process its with the frusto-conical face effect of mandrel 2 corresponding settings under spreading, its outer peripheral face is held out against on the inner hole wall of hollow shaft type parts 5, thereby hollow shaft type parts 5 is fixed on the frock.Offer respectively center positioning hole (not looking out among the figure) at the both ends of the surface center of mandrel 2, the center positioning hole by mandrel 2 two ends with hollow shaft type parts 5 clampings to the Double Tops point of grinding machine.
In the utility model, elastic expansion sleeve adopts spring steel to make, behind heat-treatment quenching, has stronger breathing elasticity, the opening that elastic expansion sleeve is offered by its circumference is realized under external force spreading or contraction, each open end is communicated with the intensity that the radial direction through hole that arranges can improve the elastic expansion sleeve opening, avoids the opening fracture, improves the dependability of elastic expansion sleeve.Cooperate by frusto-conical face between elastic expansion sleeve and the mandrel; can guarantee that elastic expansion sleeve is stressed even on its longitudinally; elastic expansion sleeve is out of shape unanimously everywhere; avoid hollow shaft type parts to produce distortion because of unbalance stress; reduction is to the wearing and tearing of hollow shaft type parts inner hole wall; the machining accuracy of protection hollow shaft type parts inner hole wall; improve the concentricity of hollow shaft type parts surfaces externally and internally processing; it is simple in structure; easy to use, assembling and dismounting are all comparatively easy, can repeatedly use; service life is longer, is widely used in being suitable for producing in enormous quantities.
The utility model is not limited to above-described embodiment, and above-mentioned top-pushing mechanism can also adopt at the end face central shaft of the miner diameter end of mandrel frusto-conical face to offering screwed hole, and the spinning bolt is realized in the screwed hole; The split arc piece that elastic expansion sleeve also can adopt circumference to lay realizes that by the ring spring of suit elasticity connects; The top-pushing mechanism that is used for the pushing tow elastic expansion sleeve also can directly be used the high nut of spinning on screw rod, and it is all within protection domain of the present utility model.

Claims (6)

1. hollow shaft Cylindrical Grinding Processes frock, it is characterized in that, comprise for the mandrel that is located in one heart the hollow shaft type parts endoporus and reach the elastic expansion sleeve that between mandrel outer surface and hollow shaft type parts inner hole wall, can radially actuate for sleeve, the two ends of described mandrel have center positioning hole, the outer surface of described elastic expansion sleeve is the face of cylinder, the internal face of described elastic expansion sleeve and the outer surface of mandrel are respectively equipped with the frusto-conical face of corresponding matching, also are provided with at the miner diameter end place that described mandrel is positioned at frusto-conical face for promoting elastic expansion sleeve to slide to mandrel butt annular conical surface bigger diameter end vertically, thereby make elastic expansion sleeve outer surface and hollow shaft type parts inner hole wall push up friction tight top-pushing mechanism by the frusto-conical face that cooperatively interacts.
2. hollow shaft Cylindrical Grinding Processes frock according to claim 1 is characterized in that, described top-pushing mechanism comprises that being positioned at the frusto-conical face miner diameter end on the mandrel extends axially screw rod and the nut of spinning on screw rod that sets firmly.
3. hollow shaft Cylindrical Grinding Processes frock according to claim 2 is characterized in that, also is being arranged be used to the top cover that is mounted between nut and the elastic expansion sleeve on the described screw rod.
4. hollow shaft Cylindrical Grinding Processes frock according to claim 1 is characterized in that, also radial convex is provided with the gear edge that cooperates for the block of corresponding outer face with hollow shaft type parts at bigger diameter end place that described mandrel is positioned at frusto-conical face.
5. according to claim 1 to the described hollow shaft Cylindrical Grinding Processes of 4 any one frock, it is characterized in that, offer respectively the opening that connects jacket wall inside and outside it along its longitudinally at the two ends of described elastic expansion sleeve, the opening at elastic expansion sleeve two ends is interspersed along even circumferential.
6. hollow shaft Cylindrical Grinding Processes frock according to claim 5 is characterized in that, the end that is positioned at each opening at described elastic expansion sleeve also is communicated with respectively and is provided with radial direction through hole, and the diameter of through hole is greater than the gap of corresponding opening.
CN 201220507334 2012-09-29 2012-09-29 External grinding machining tool for hollow shafts Expired - Fee Related CN202763670U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220507334 CN202763670U (en) 2012-09-29 2012-09-29 External grinding machining tool for hollow shafts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220507334 CN202763670U (en) 2012-09-29 2012-09-29 External grinding machining tool for hollow shafts

Publications (1)

Publication Number Publication Date
CN202763670U true CN202763670U (en) 2013-03-06

Family

ID=47770269

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220507334 Expired - Fee Related CN202763670U (en) 2012-09-29 2012-09-29 External grinding machining tool for hollow shafts

Country Status (1)

Country Link
CN (1) CN202763670U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104162836A (en) * 2013-05-17 2014-11-26 昆山江锦机械有限公司 Elastic core shaft for grinding of outer piston
CN105312943A (en) * 2015-11-27 2016-02-10 燕山大学 Net-shaped taper sleeve self-compensating centrifugal expansion high-speed cutter handle
CN107414674A (en) * 2017-09-19 2017-12-01 武汉鸿博鑫科技有限公司 Inner hole of workpiece swelling fixture
CN109382648A (en) * 2018-09-12 2019-02-26 中车大连机车车辆有限公司 The mounting device and installation method of diesel engine front end lid
CN113245929A (en) * 2021-06-01 2021-08-13 大连理工大学 Elastic grinding shaft sleeve with radial deformation and symmetric distribution

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104162836A (en) * 2013-05-17 2014-11-26 昆山江锦机械有限公司 Elastic core shaft for grinding of outer piston
CN105312943A (en) * 2015-11-27 2016-02-10 燕山大学 Net-shaped taper sleeve self-compensating centrifugal expansion high-speed cutter handle
CN107414674A (en) * 2017-09-19 2017-12-01 武汉鸿博鑫科技有限公司 Inner hole of workpiece swelling fixture
CN109382648A (en) * 2018-09-12 2019-02-26 中车大连机车车辆有限公司 The mounting device and installation method of diesel engine front end lid
CN113245929A (en) * 2021-06-01 2021-08-13 大连理工大学 Elastic grinding shaft sleeve with radial deformation and symmetric distribution

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
C53 Correction of patent for invention or patent application
CB03 Change of inventor or designer information

Inventor after: Liu Xuezhan

Inventor after: Wang Feifei

Inventor after: Li Huaiyong

Inventor before: Liu Xuezhan

Inventor before: Zhang Jiansheng

Inventor before: Li Huaiyong

COR Change of bibliographic data

Free format text: CORRECT: INVENTOR; FROM: LIU XUEZHAN ZHANG JIANSHENG LI HUAIYONG TO: LIU XUEZHAN WANG FEIFEI LI HUAIYONG

GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130306

Termination date: 20150929

EXPY Termination of patent right or utility model