CN202317988U - Grinding work fixture of hollow shaft - Google Patents

Grinding work fixture of hollow shaft Download PDF

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Publication number
CN202317988U
CN202317988U CN2011204759662U CN201120475966U CN202317988U CN 202317988 U CN202317988 U CN 202317988U CN 2011204759662 U CN2011204759662 U CN 2011204759662U CN 201120475966 U CN201120475966 U CN 201120475966U CN 202317988 U CN202317988 U CN 202317988U
Authority
CN
China
Prior art keywords
hollow shaft
shaft
central shaft
hollow
positioning sleeve
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
CN2011204759662U
Other languages
Chinese (zh)
Inventor
郑权
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.)
Chongqing Shengzhu Science&technology Development Co ltd
Original Assignee
Chongqing Shengzhu Science&technology Development 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 Chongqing Shengzhu Science&technology Development Co ltd filed Critical Chongqing Shengzhu Science&technology Development Co ltd
Priority to CN2011204759662U priority Critical patent/CN202317988U/en
Application granted granted Critical
Publication of CN202317988U publication Critical patent/CN202317988U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a grinding work fixture of a hollow shaft, which comprises a central shaft, locating sleeves and nuts, wherein external threads are respectively arranged on two ends of the central shaft, the two locating sleeves are respectively sleeved on two ends of the central shaft, the excircle surface of each locating sleeve is a cone surface which faces inwards; and the two nuts are respectively sleeved on two ends of the central shaft in a screwing manner and positioned on the outer sides of the locating sleeves at the corresponding ends. According to the grinding work fixture, the central shaft passes through a hollow shaft, the locating sleeves are respectively sleeved on two ends of the hollow shaft, the cone surfaces of the locating sleeves support against the holes in two ends of the central shaft, and the nuts are screwed and sleeved on two ends of the hollow shaft, the locating sleeves are locked by the nuts, so that the cone surfaces of the locating sleeves are clung to the inner holes of the hollow shaft. The grinding work fixture can prevent the shaft end holes of the hollow shaft from being worn when punched into a cylindrical central spindle and prevent the thinner shaft end of the hollow shaft from being broken; and coaxility of the excircle surface and the axial line of the hollow shaft is higher.

Description

A kind of hollow shaft mill machining tool fixture
Technical field
The utility model relates to a kind of frock clamp, relates in particular to a kind of hollow shaft mill machining tool fixture.
Background technology
Often need the hollow axial workpiece of processing in the machine-building.The demanding hollow axial workpiece work in-process of dimensional accuracy and roughness need pass through grinding and could accomplish.Because the general wall thickness dimension of hollow axial workpiece is less, the clamping difficulty, and deform easily.In order to guarantee to process the part that adheres to specification, often need design hollow axial workpiece is fixed on the mill machining tool fixture on the grinding machine centre of location hole.
In the prior art, the mill machining tool fixture mainly adopts two cylindrical mandrel, and the outer face of cylindrical mandrel is provided with center positioning hole along center line.Use in the time of to grind machining tool fixture, at first in the two ends of hollow shaft part to be ground, squeeze into cylindrical mandrel with similar instruments such as iron hammers respectively, then the center positioning hole of cylindrical mandrel is fixed through the top on the grinding machine.Use above-mentioned grinding machine frock clamp mainly to have following defective: when 1, cylindrical mandrel is in squeezing into the stub bore of hollow shaft; Dynamics to squeezing into requires very high; If the dynamics of squeezing into is excessive, the axle head endoporus of hollow shaft easy to wear, and be prone to make the axle head of thin hollow shaft to break; 2, after the cylindrical mandrel that the two ends of hollow shaft are squeezed into respectively, the concentricity of two cylindrical mandrel be difficult to guarantee consistent, thereby causes the axiality of outer round surface and axis of the hollow shaft after the grinding relatively poor.
The utility model content
To the above-mentioned weak point that exists in the prior art; The utility model provides a kind of stub bore of hollow shaft of both can having avoided when squeezing into cylindrical mandrel, to be worn; Can avoid again breaking than the axle head of thin hollow shaft, and the higher hollow shaft mill machining tool fixture of the axiality of the outer round surface of hollow shaft and axis.
The purpose of the utility model is achieved in that a kind of hollow shaft mill machining tool fixture, comprises central shaft, positioning sleeve and nut; The two ends of said central shaft are respectively equipped with external screw thread; Said positioning sleeve is two and is enclosed within the two ends of central shaft respectively that the periphery of positioning sleeve is that the taper seat and the conical surface are inside; Said nut is two and distinguishes rotation set at the two ends of central shaft that nut is positioned at the outside of the positioning sleeve of corresponding end.
As a kind of preferred version of the utility model, two outer ends of said central shaft are provided with center positioning hole along center line respectively.
The beneficial effect of the utility model is: the utility model passes hollow shaft with central shaft; Positioning sleeve is inserted at two ends at hollow shaft respectively; The taper seat of positioning sleeve is withstood in the hole at central shaft two ends, and at the two ends of hollow shaft the rotation set nut, through nut positioning sleeve is locked; Make the taper seat of positioning sleeve be close to the endoporus of hollow shaft; This frock clamp both can avoid the stub bore of hollow shaft when squeezing into cylindrical mandrel, to be worn, and can avoid again breaking than the axle head of thin hollow shaft, and the axiality of the outer round surface of hollow shaft and axis was higher.
Description of drawings
Fig. 1 is a kind of structural representation of hollow shaft mill machining tool fixture.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done to describe in further detail.
As shown in Figure 1, a kind of hollow shaft mill machining tool fixture comprises central shaft 1, positioning sleeve 2 and nut 3.The two ends of central shaft 1 are respectively equipped with external screw thread.Positioning sleeve 2 is two and is enclosed within the two ends of central shaft 1 respectively that the periphery of positioning sleeve 2 is that the taper seat and the conical surface are inside.Nut 3 is two and distinguishes rotation set at the two ends of central shaft 1 that nut 3 is positioned at the outside of the positioning sleeve 2 of corresponding end.Two outer ends at central shaft 1 are provided with center positioning hole 4 along center line respectively, and the thimble through grinding machine head and afterbody withstands on respectively in the center positioning hole 4 at these central shaft 1 two ends, and this hollow shaft 5 is installed on the grinding machine.
Use in the time of to grind machining tool fixture; At first this central shaft 1 is passed hollow shaft 5; Positioning sleeve 2 is inserted at two ends at central shaft 1 respectively, and screws on nut 3 respectively at the two ends of central shaft 1, makes nut 3 compress positioning sleeve 2; And then the taper seat that makes positioning sleeve 2 is close to the endoporus of hollow shaft 1, and central shaft 1 and hollow shaft 5 are fixed as one.During grinding, only need the thimble of grinding machine head and afterbody is withstood on respectively in the center positioning hole 4 at these central shaft 1 two ends, this hollow shaft 5 is installed on the grinding machine.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the aim and the scope of the utility model technical scheme, it all should be encompassed in the middle of the claim scope of the utility model.

Claims (2)

1. a hollow shaft mill machining tool fixture is characterized in that: comprise central shaft (1), positioning sleeve (2) and nut (3); The two ends of said central shaft (1) are respectively equipped with external screw thread; Said positioning sleeve (2) is two and is enclosed within the two ends of central shaft (1) respectively that the periphery of positioning sleeve (2) is that the taper seat and the conical surface are inside; Said nut (3) is two and distinguishes rotation set at the two ends of central shaft (1) that nut (3) is positioned at the outside of the positioning sleeve (2) of corresponding end.
2. a kind of hollow shaft mill machining tool fixture according to claim 1, it is characterized in that: two outer ends of said central shaft (1) are provided with center positioning hole (4) along center line respectively.
CN2011204759662U 2011-11-25 2011-11-25 Grinding work fixture of hollow shaft Expired - Fee Related CN202317988U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204759662U CN202317988U (en) 2011-11-25 2011-11-25 Grinding work fixture of hollow shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204759662U CN202317988U (en) 2011-11-25 2011-11-25 Grinding work fixture of hollow shaft

Publications (1)

Publication Number Publication Date
CN202317988U true CN202317988U (en) 2012-07-11

Family

ID=46429985

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204759662U Expired - Fee Related CN202317988U (en) 2011-11-25 2011-11-25 Grinding work fixture of hollow shaft

Country Status (1)

Country Link
CN (1) CN202317988U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105290893A (en) * 2015-09-14 2016-02-03 江西洪都航空工业集团有限责任公司 External cylindrical grinding auxiliary device for hollow shaft parts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105290893A (en) * 2015-09-14 2016-02-03 江西洪都航空工业集团有限责任公司 External cylindrical grinding auxiliary device for hollow shaft parts

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120711

Termination date: 20131125

C17 Cessation of patent right