CN203830761U - Inner expansion type positioning fixture - Google Patents

Inner expansion type positioning fixture Download PDF

Info

Publication number
CN203830761U
CN203830761U CN201320198097.2U CN201320198097U CN203830761U CN 203830761 U CN203830761 U CN 203830761U CN 201320198097 U CN201320198097 U CN 201320198097U CN 203830761 U CN203830761 U CN 203830761U
Authority
CN
China
Prior art keywords
swelling
tapering
groove
positioning fixture
conical
Prior art date
Application number
CN201320198097.2U
Other languages
Chinese (zh)
Inventor
韩昌江
Original Assignee
浙江同泰泵业有限公司
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 浙江同泰泵业有限公司 filed Critical 浙江同泰泵业有限公司
Priority to CN201320198097.2U priority Critical patent/CN203830761U/en
Application granted granted Critical
Publication of CN203830761U publication Critical patent/CN203830761U/en

Links

Abstract

The utility model provides an inner expansion type positioning fixture and belongs to the technical field of machining. The inner expansion type positioning fixture solves the problems that an inner expansion type positioning fixture in the prior art is low in centering precision and low in efficiency. The inner expansion type positioning fixture comprises a conical part with an axial hole, the upper portion of the conical part is conical, expansion parts tightly attached to and matched with the conical part are evenly distributed on the upper portion of the conical part in the circumferential direction, the expansion parts are spaced, positioning grooves are formed between the expansion parts and the upper portion of the conical part, rotating stop pins used for positioning the expansion parts to the upper portion of the conical part are tightly matched in the positioning grooves, and fastening rings for tightly pressing the expansion parts to the upper portion of the conical part are arranged on the outer walls of the expansion parts in a sleeved mode, and a locking part is connected in the axial hole in the upper portion of the conical part in a threaded mode. The inner expansion type positioning fixture has the advantages of being high in centering precision and high in efficiency.

Description

A kind of internal-expansion type positioning fixture
Technical field
The utility model belongs to Machining Technology field, has related to a kind of internal-expansion type positioning fixture for processing thin-walled part.
Background technology
Thin-walled parts is to add the too thin heat radiation of workpiece wall that is easy to man-hour be subject to the impact of heat in metal cutting, cutting force and makes to process slow, and when bearing cutting force, easily affect the dimensional accuracy of workpiece, the most important thing is because the thin part of wall is easy to folder distortion in clamping, cause the axiality of thin-walled parts not reach requirement, thereby the waste product that causes workpiece, the selection of fixture that therefore adds man-hour is extremely important.
Chinese patent discloses a kind of internal-expansion type positioning fixture [Granted publication number: CN201862802U], by axle and the locating surface being arranged in axle, formed, it is conical that one end of axle is, adapt with the spindle hole of connected lathe, the other end of axle is provided with an axial internal taper hole, inner cone hole wall is arranged with some grooves by waiting, and is provided with the interior centrum consistent with internal taper hole tapering in internal taper hole.The utility model can make clamping work pieces in the as far as possible little situation of axle distortion.
But once, interior centrum all will screw in and screw out internal taper hole once to every clamping, efficiency is lower; The depth that inner cone screws in internal taper hole also can affect the positioning precision of thin-walled parts, causes the centering precision of thin-walled parts low.
Summary of the invention
The problems referred to above that the utility model exists for prior art, have proposed a kind of internal-expansion type positioning fixture, have advantages of that centering precision is high, efficiency is high.
The utility model is realized by following technical proposal: a kind of internal-expansion type positioning fixture, comprise that inside has the tapering part of axis hole, the top of described tapering part is taper, the top of described tapering part is circumferentially evenly equipped with the some and friction tight swelling part of its subsides, between some described swelling parts, there is spacing, it is characterized in that, between described swelling part and the top of described tapering part, be formed with locating slot, in described locating slot, close-fitting is useful on the spline pin that described swelling part is positioned to described tapering part top, some described swelling part outer wall covers have the tight loop that described swelling part is pressed on to described tapering part top, the axis hole internal thread on described tapering part top is connected with locking member.
In this internal-expansion type positioning fixture, utilize the cooperation of swelling part and tapering part to realize the centering of thin-walled parts; Between swelling part, there is the flexible and tensioning that spacing can facilitate swelling part; The effect on tapering part by swelling part equal dividing and positioning is played in the cooperation of locating slot and spline pin, prevents that thin-walled parts from adding swelling in man-hour part in rigidity and circumferentially moving with respect to tapering part; Locking member is conducive to adjust the relative position of tapering part and thin-walled parts.During work, utilize locking member turnover just can allow swelling part tight or loose, thereby reach the effect of locking thin-walled parts.
In above-mentioned a kind of internal-expansion type positioning fixture, the cross section of described locking member is middle font, some described swelling part top is above the top of described tapering part, and the inwall on described swelling part top has draw-in groove, and the middle part of described locking member is connected in draw-in groove.Utilize the middle part and the phase clamping of swelling part top of locking member, increased steadiness when locking member regulates swelling part tight or loose.
In above-mentioned a kind of internal-expansion type positioning fixture, described locating slot consists of with the groove two that is positioned at described swelling part inwall the groove one that is positioned at the sidewall of described tapering part, the axial length of described groove one is greater than the axial length of described groove two, the sidepiece tight fit of described groove two and described spline pin.Locating slot is used for arranging spline pin, the axial length of groove one is greater than the axial length of groove two, till ship and resell on another market to provide and move axially space, not only meet the object of spline finger setting swelling part, but also moving axially of tapering part top, provide space for swelling part.
Compared with prior art, this internal-expansion type positioning fixture by arranging spline pin between swelling part and tapering part top, utilize spline pin that swelling part is positioned on tapering part, and by locking member, adjust the degree of tightness of swelling part, and then reach the object of locking thin-walled parts, have advantages of that centering precision is high and efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of this internal-expansion type positioning fixture.
In figure, 1, tapering part; 2, swelling part; 3, locating slot; 3a, groove one; 3b, groove two; 4, spline pin; 5, locking member; 6, draw-in groove; 7, axis hole; 8, tight loop.
The specific embodiment
Be below specific embodiment of the utility model, and by reference to the accompanying drawings the technical solution of the utility model be further described, but the utility model is not limited to these embodiment.
A kind of internal-expansion type positioning fixture as shown in Figure 1, comprise that inside has the tapering part 1 of axis hole 7, the top of tapering part 1 is taper, the top of tapering part 1 is circumferentially evenly equipped with the some and friction tight swelling part 2 of its subsides, between some swelling parts 2, there is spacing, between the top of swelling part 2 and tapering part 1, be formed with locating slot 3, the interior close-fitting of locating slot 3 is useful on the spline pin 4 that swelling part 2 is positioned to tapering part 1 top, some swelling part 2 outer wall covers have the tight loop 8 that swelling part 2 is pressed on to tapering part 1 top, and axis hole 7 internal threads on tapering part 1 top are connected with locking member 5.
The cross section of locking member 5 is middle font, and some swelling parts 2 tops are above the top of tapering part 1, and the inwall on swelling part 2 tops has draw-in groove 6, and the middle part of locking member 5 is connected in draw-in groove 6.Utilize the middle part and the 2 top phase clampings of swelling part of locking member 5, increased steadiness when locking member 5 regulates swelling part 2 tight or loose.
Locating slot 3 consists of with groove two 3b that are positioned at swelling part 2 inwalls groove one 3a that is positioned at the sidewall of tapering part 1, the axial length of groove one 3a is greater than the axial length of groove two 3b, the sidepiece tight fit of groove two 3b and spline pin 4, this is set to spline pin 4 provides and has moved axially space, not only meet the object of spline pin 4 location swelling parts 2, but also moving axially of tapering part 1 top, provide space for swelling part 2.During work, utilize locking member 5 turnover just can allow swelling part 2 tight or loose, thereby reach the effect of locking thin-walled parts, have advantages of that centering precision is high and efficiency is high.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Claims (3)

1. an internal-expansion type positioning fixture, comprise that inside has the tapering part (1) of axis hole (7), the top of described tapering part (1) is taper, the top of described tapering part (1) is circumferentially evenly equipped with the some and friction tight swelling parts of its subsides (2), between some described swelling parts (2), there is spacing, it is characterized in that, between described swelling part (2) and the top of described tapering part (1), be formed with locating slot (3), the interior close-fitting of described locating slot (3) is useful on the spline pin (4) that described swelling part (2) is positioned to described tapering part (1) top, some described swelling part (2) outer wall covers have the tight loop (8) that described swelling part (2) is pressed on to described tapering part (1) top, axis hole (7) internal thread on described tapering part (1) top is connected with locking member (5).
2. a kind of internal-expansion type positioning fixture according to claim 1, it is characterized in that, the cross section of described locking member (5) is middle font, some described swelling part (2) top is above the top of described tapering part (1), the inwall on described swelling part (2) top has draw-in groove (6), and the middle part of described locking member (5) is connected in draw-in groove (6).
3. a kind of internal-expansion type positioning fixture according to claim 1 and 2, it is characterized in that, described locating slot (3) forms by being positioned at the groove one (3a) of sidewall of described tapering part (1) and the groove two (3b) that is positioned at described swelling part (2) inwall, the axial length of described groove one (3a) is greater than the axial length of described groove two (3b), the sidepiece tight fit of described groove two (3b) and described spline pin (4).
CN201320198097.2U 2013-04-08 2013-04-08 Inner expansion type positioning fixture CN203830761U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320198097.2U CN203830761U (en) 2013-04-08 2013-04-08 Inner expansion type positioning fixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320198097.2U CN203830761U (en) 2013-04-08 2013-04-08 Inner expansion type positioning fixture

Publications (1)

Publication Number Publication Date
CN203830761U true CN203830761U (en) 2014-09-17

Family

ID=51508650

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320198097.2U CN203830761U (en) 2013-04-08 2013-04-08 Inner expansion type positioning fixture

Country Status (1)

Country Link
CN (1) CN203830761U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104827068A (en) * 2015-05-11 2015-08-12 清华大学 Mandrel component
CN105108510A (en) * 2015-08-13 2015-12-02 南京三乐电子信息产业集团有限公司 Internal bracing clamp with tightened side face and adjustable inner diameter and machining method of internal bracing clamp
CN109128238A (en) * 2018-09-25 2019-01-04 中国航发航空科技股份有限公司 A kind of elastic expansion always centring means for blade tenon head bore copper sheathing boring fraising
CN109822123A (en) * 2018-12-06 2019-05-31 山东大学 A kind of thin-walled cylindrical workpiece turning clamping method, fixture and processing unit (plant)
CN110170674A (en) * 2019-04-15 2019-08-27 谢舒静 Internal expanding fixture for thin-wall sleeve processing

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104827068A (en) * 2015-05-11 2015-08-12 清华大学 Mandrel component
CN105108510A (en) * 2015-08-13 2015-12-02 南京三乐电子信息产业集团有限公司 Internal bracing clamp with tightened side face and adjustable inner diameter and machining method of internal bracing clamp
CN105108510B (en) * 2015-08-13 2017-08-25 南京三乐电子信息产业集团有限公司 Tighten up and the adjustable inner support clamp of internal diameter and its processing method a kind of side
CN109128238A (en) * 2018-09-25 2019-01-04 中国航发航空科技股份有限公司 A kind of elastic expansion always centring means for blade tenon head bore copper sheathing boring fraising
CN109822123A (en) * 2018-12-06 2019-05-31 山东大学 A kind of thin-walled cylindrical workpiece turning clamping method, fixture and processing unit (plant)
CN109822123B (en) * 2018-12-06 2020-10-02 山东大学 Clamping method, clamp and machining device for turning thin-wall cylindrical part
CN110170674A (en) * 2019-04-15 2019-08-27 谢舒静 Internal expanding fixture for thin-wall sleeve processing

Similar Documents

Publication Publication Date Title
CN103949851B (en) A kind of processing method of aluminium alloy thin-walled cylindrical member
CN202804227U (en) Elastic mandrel positioning fixture of turning thin-walled part
CN102079049B (en) Tool holder and method for assembling the same
CN102712051B (en) Machinery tools and the cutting head for machinery tools
CN203779182U (en) Centering clamp for thin-walled sleeve
CN202701523U (en) High-precision expandable gear shaving clamp
CN201143635Y (en) Sleeve barrel grinding jigs
CN104439362A (en) Expansion fixture suitable for blank surfaces
CN202763104U (en) Gapless clamping device
CN204248656U (en) A kind of bearing ring electric magnetic no-core clamp supporting
CN102485385A (en) Thin-wall tube body fastening device
CN203380637U (en) Sleeve body clamping tool
CN204603354U (en) Thin-walled fixture for processing excircle of barrel-shaped parts
CN103707186A (en) Shaft part cutting and/or grinding processing clamp and processing method thereof
CN204019171U (en) A kind of collet chuck
CN102581759A (en) Thin wall processing fixture
CN104175144A (en) Shaft gear fixture and shaft gear machining tool
CN102145393B (en) Follow-up supporting tool bit device used for processing deep hole
CN103495755A (en) Machining clamp for outer wall of blind-hole thin-wall sleeve part and using method thereof
CN103143790B (en) Gear hobbing clamp for clamping synchronizer gear
CN101733669A (en) Precise positioning and clamping device for stepped thin-wall barrel
CN103737048A (en) Clamp special for thin wall cylinder excircle turning
CN204868271U (en) Lathe is with anchor clamps of long and thin annular thin wall spare of processing
CN102357826B (en) Self-centering fixture
CN206296482U (en) A kind of thin-wall barrel clamp for machining

Legal Events

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

Granted publication date: 20140917

Termination date: 20150408