CN203778799U - Manual self-centering clamp for thin-walled sleeve - Google Patents

Manual self-centering clamp for thin-walled sleeve Download PDF

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Publication number
CN203778799U
CN203778799U CN201420079402.0U CN201420079402U CN203778799U CN 203778799 U CN203778799 U CN 203778799U CN 201420079402 U CN201420079402 U CN 201420079402U CN 203778799 U CN203778799 U CN 203778799U
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CN
China
Prior art keywords
cone
multistage
axle
rear end
multistage axis
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Expired - Fee Related
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CN201420079402.0U
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Chinese (zh)
Inventor
张鸿来
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Individual
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Individual
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Priority to CN201420079402.0U priority Critical patent/CN203778799U/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a manual self-centering clamp for a thin-walled sleeve. A positioning pillar of a mandrel is provided with at least two groups of radial through holes along the axial direction; three or four radial through holes in each group of radial through holes are uniformly distributed in the same cross section of the positioning pillar; positioning clamping pillars are movably connected in the radial through holes in a matching mode; a multistage conical shaft is movably matched and connected in a step inner hole of the mandrel; a reset spring sleeving the multistage conical shaft is arranged between a boss at the front end of the multistage conical shaft and the step surface at the front end of the step inner hole; the rear end of the multistage conical shaft is movably matched and connected with the inner hole of an end cover fixedly connected at the rear end of the positioning pillar. The middle of the multistage conical shaft is provided with conical pillars adaptive to all groups of radial through holes; each conical shaft is formed by a front end circular truncated cone and a rear cylinder table; the conical pillar surface of each conical pillar is in contact connection with the bottom end of the corresponding positioning clamping pillar; a connection seat is arranged on the end cover and is internally provided with a manual driving rod; the driving end of the manual driving rod is in contact connection with the bottom surface of a groove at the rear end of the multistage conical shaft.

Description

Manual self-centering fixture for thin walled cylinder body
Technical field
The utility model relates to a kind of thin-walled parts centralizer, particularly a kind of self-centering fixture of thin-walled parts.
Background technology
In machining, some workpiece are positioned and are clamped by its endoporus, and existing fixture or complicated structure, be exactly unload cumbersome, and order scarcely can realize self-centering, the requirement that often can not satisfy condition, causes machining accuracy poor.Therefore, Chinese invention patent application number: 201110286659.4, a kind of self-centering fixture is disclosed, axle is the cone of hollow, and the external diameter of nearly ring flange end is greater than the external diameter of ring flange end far away, the ring flange end far away of axle has one section of external screw thread, this section of external screw thread place is equipped with adjusting nut, axle is circumferentially arranged with a slidably baffle ring outward, axle is provided with a pair of chute along distributing in axle, the axle center of axle is hung with a pull bar, one end of pull bar and baffle ring fix by a pin, pin is through in a pair of chute, and can slide along it, the other end of pull bar is fixed with a catch, the conicoid that the inwall of expansion set matches for the outer wall with axle, outer wall is column face, the nearly ring flange end of expansion set has the locating ring for axial location workpiece of circumferential protrusion, on expansion set, axially offer a plurality of expansion joints of being convenient to expansion and shrinking, expansion set is set between baffle ring and adjusting nut, when adjusting nut is during to direction turn near described ring flange, expansion set moves and external diameter is expanded to the direction of the external diameter increase of axle, thereby offset with the inwall of workpiece, when adjusting nut is during to direction turn away from ring flange, adjusting nut drives described catch by pull bar and baffle ring, and expansion set is moved to the direction of the reduced diameter of described axle, the reduced diameter of expansion set and being separated with the inwall of workpiece.But this fixture, in the process of clamping thin-walled parts, easily causes thin-walled parts distortion.Particularly the distortion of thin-walled elongated workpieces is larger.
Summary of the invention
The utility model is the technical problem that clamps machining deformation that will solve thin-walled elongated workpieces, and a kind of manual self-centering fixture for thin walled cylinder body is provided.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of manual self-centering fixture for thin walled cylinder body, comprise axle, the multistage axis of cone, end cap, back-moving spring, locating dowel one end of axle is provided with positioning step, axle cylindrical is location cylinder, in the location cylinder of axle, be provided with an inner bore of step, in the locating dowel of axle, have vertically at least two group radial direction through hole, every group of radial direction through hole is evenly equipped with three or four radial direction through hole on the same cross section of locating dowel, the activity location clamping column that is connected in radial direction through hole, the activity multistage axis of cone that is connected in the inner bore of step of axle, multistage axis of cone front end is connected with the front end positioning guide hole matched in clearance of inner bore of step, between the boss of multistage axis of cone front end and inner bore of step front end step surface, the back-moving spring being socketed in the multistage axis of cone is housed, multistage axis of cone rear end is connected with the end cap endoporus activity being fixedly connected on locating dowel rear end, multistage axis of cone middle part is provided with and every group of circular cone post that radial direction through hole is corresponding, each circular cone post is comprised of nose circle frustum and rear end cylinder table, the circular cone cylinder of each circular cone post is connected with the bottom contact of location clamping column, above end cap, be provided with Connection Block, manual drives bar is housed in Connection Block, the drive end of manual drives bar is connected with the contact of multistage axis of cone rear end groove floor.
The locating dowel of axle is connected with thin-walled parts endoporus matched in clearance.End face clamp nut is threaded on end cap cylindrical.Multistage axis of cone rear end groove floor is provided with inclined-plane, on the drive end of manual drives bar, rolling bearing is housed, and housing washer rolls and contacts with multistage axis of cone rear end groove floor.
The beneficial effects of the utility model are: simple in structure, workpiece easy to loading and unloading, and can realize self-centering, particularly used after the clamping column of location, in the process of clamping thin-walled elongated workpieces, thin-walled elongated workpieces deflection is little, and positioning precision is high, can guarantee axiality and the perpendicularity of the thin-walled elongated workpieces after processing, and by manual drives bar and back-moving spring, be convenient to thin-walled elongated workpieces and load and unload.
Accompanying drawing explanation
Fig. 1 is the structure cutaway view of the utility model when location clamping thin-walled elongated workpieces;
Fig. 2 is along the cutaway view of A-A in Fig. 1;
Fig. 3 is the structure cutaway view of the utility model when loosening clamping thin-walled elongated workpieces.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 1 to Figure 3, a kind of manual self-centering fixture for thin walled cylinder body, comprises axle 1, the multistage axis of cone 2, location clamping column 3, end cap 4, end face clamp nut 5, back-moving spring 6, Connection Block 8, manual drives bar 9.
Locating dowel one end of axle 1 is provided with positioning step, axle 1 cylindrical is location cylinder, in the location cylinder of axle 1, be provided with an inner bore of step, in the locating dowel of axle 1, have vertically at least two group radial direction through hole, every group of radial direction through hole is evenly equipped with three or four radial direction through hole on the same cross section of locating dowel, the activity location clamping column that is connected in radial direction through hole, the activity multistage axis of cone 2 that is connected in the inner bore of step of axle 1, the multistage axis of cone 2 front ends are connected with the front end positioning guide hole matched in clearance of inner bore of step, between the boss of the multistage axis of cone 2 front ends and inner bore of step front end step surface, the back-moving spring 6 being socketed in the multistage axis of cone 2 is housed, the multistage axis of cone 2 rear ends are connected with the end cap 4 endoporus activities that are fixedly connected on locating dowel rear end, the multistage axis of cone 2 middle parts are provided with and every group of circular cone post that radial direction through hole is corresponding, each circular cone post is comprised of nose circle frustum and rear end cylinder table, the circular cone cylinder of each circular cone post is connected with the bottom contact of location clamping column 3, end cap 4 is provided with Connection Block 8 above, manual drives bar 9 is housed in Connection Block 8, the drive end of manual drives bar 9 is connected with the multistage axis of cone 2 rear end groove floor contacts.
The locating dowel of axle 1 is connected with thin-walled parts 7 endoporus matched in clearance.End face clamp nut 5 is threaded on end cap 4 cylindricals.The multistage axis of cone 2 rear end groove floor are provided with inclined-plane, on the drive end of manual drives bar 9, rolling bearing are housed, and housing washer rolls and contacts with the multistage axis of cone 2 rear end groove floor.
As shown in Figure 1, when the multistage axis of cone 2 is advanced to the direction of close mandrels backend step surface under the driving of manual drives bar 9, location clamping column 3 outward directions in the multistage axis of cone 2 move, and its head contacts and pushes against with the inwall of thin-walled parts 7.
As shown in Figure 3, when the multistage axis of cone 2 is when manual drives bar 9 loosens, under action of reset spring, while exiting to the direction away from axle 1 rear end step end face, the location clamping column 3 in the multistage axis of cone 2 is separated with the inwall of thin-walled parts 7.

Claims (4)

1. the manual self-centering fixture for thin walled cylinder body, comprise axle (1), the multistage axis of cone (2), end cap (4), back-moving spring (6), it is characterized in that: locating dowel one end of described axle (1) is provided with positioning step, axle (1) cylindrical is location cylinder, in the location cylinder of axle (1), be provided with an inner bore of step, in the locating dowel of axle (1), have vertically at least two group radial direction through hole, every group of radial direction through hole is evenly equipped with three or four radial direction through hole on the same cross section of locating dowel, in radial direction through hole, activity is connected and locates clamping column (3), the activity multistage axis of cone (2) that is connected in the inner bore of step of axle (1), the multistage axis of cone (2) front end is connected with the front end positioning guide hole matched in clearance of inner bore of step, the back-moving spring (6) being socketed in the multistage axis of cone (2) is housed between the boss of the multistage axis of cone (2) front end and inner bore of step front end step surface, the multistage axis of cone (2) rear end is connected with end cap (4) the endoporus activity being fixedly connected on locating dowel rear end, the multistage axis of cone (2) middle part is provided with and every group of circular cone post that radial direction through hole is corresponding, each circular cone post is comprised of nose circle frustum and rear end cylinder table, the circular cone cylinder of each circular cone post is connected with the bottom contact of location clamping column (3), end cap (4) is provided with Connection Block (8) above, manual drives bar (9) is housed in Connection Block (8), the drive end of manual drives bar (9) is connected with the contact of the multistage axis of cone (2) rear end groove floor.
2. the manual self-centering fixture for thin walled cylinder body according to claim 1, is characterized in that: the locating dowel of described axle (1) is connected with thin-walled parts (7) endoporus matched in clearance.
3. the manual self-centering fixture for thin walled cylinder body according to claim 1, is characterized in that: end face clamp nut (5) is threaded on described end cap (4) cylindrical.
4. the manual self-centering fixture for thin walled cylinder body according to claim 1, it is characterized in that: the described multistage axis of cone (2) rear end groove floor is provided with inclined-plane, on the drive end of manual drives bar (9), rolling bearing is housed, and housing washer rolls and contacts with the multistage axis of cone (2) rear end groove floor.
CN201420079402.0U 2014-02-23 2014-02-23 Manual self-centering clamp for thin-walled sleeve Expired - Fee Related CN203778799U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420079402.0U CN203778799U (en) 2014-02-23 2014-02-23 Manual self-centering clamp for thin-walled sleeve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420079402.0U CN203778799U (en) 2014-02-23 2014-02-23 Manual self-centering clamp for thin-walled sleeve

Publications (1)

Publication Number Publication Date
CN203778799U true CN203778799U (en) 2014-08-20

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104191298A (en) * 2014-09-11 2014-12-10 无锡瑞真精密机械有限公司 Double-end-floating self-centering clamp
CN104526429A (en) * 2014-12-25 2015-04-22 重庆元创自动化设备有限公司 Dual-adjustment clamping device
CN104525803A (en) * 2014-12-25 2015-04-22 重庆元创自动化设备有限公司 Clamp for machining screw thread outside motorcycle thin-wall sleeve
CN106238766A (en) * 2016-09-28 2016-12-21 王建 A kind of tight device in clamping composite oil pipe liner
CN106903635A (en) * 2017-05-04 2017-06-30 安徽航大智能科技有限公司 A kind of high accuracy self-centering clamping mechanism for being applied to the clamping of thin-walled external member
CN109632345A (en) * 2018-12-07 2019-04-16 吉林省吉通机械制造有限责任公司 A kind of taper back springing type self-centring positioning device for wheel stand cubing
CN113547143A (en) * 2020-04-26 2021-10-26 航天科工惯性技术有限公司 Thin-wall structural part clamping device
CN113547143B (en) * 2020-04-26 2024-05-10 航天科工惯性技术有限公司 Thin-wall structural member clamping device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104191298A (en) * 2014-09-11 2014-12-10 无锡瑞真精密机械有限公司 Double-end-floating self-centering clamp
CN104526429A (en) * 2014-12-25 2015-04-22 重庆元创自动化设备有限公司 Dual-adjustment clamping device
CN104525803A (en) * 2014-12-25 2015-04-22 重庆元创自动化设备有限公司 Clamp for machining screw thread outside motorcycle thin-wall sleeve
CN106238766A (en) * 2016-09-28 2016-12-21 王建 A kind of tight device in clamping composite oil pipe liner
CN106903635A (en) * 2017-05-04 2017-06-30 安徽航大智能科技有限公司 A kind of high accuracy self-centering clamping mechanism for being applied to the clamping of thin-walled external member
CN106903635B (en) * 2017-05-04 2018-07-24 安徽航大智能科技有限公司 A kind of high-precision self-centering clamping mechanism clamped applied to thin-walled external member
CN109632345A (en) * 2018-12-07 2019-04-16 吉林省吉通机械制造有限责任公司 A kind of taper back springing type self-centring positioning device for wheel stand cubing
CN113547143A (en) * 2020-04-26 2021-10-26 航天科工惯性技术有限公司 Thin-wall structural part clamping device
CN113547143B (en) * 2020-04-26 2024-05-10 航天科工惯性技术有限公司 Thin-wall structural member clamping device

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

Granted publication date: 20140820

Termination date: 20150223

EXPY Termination of patent right or utility model