CN103962598A - Automatic expansion core clamp for thin-walled cylinder parts - Google Patents

Automatic expansion core clamp for thin-walled cylinder parts Download PDF

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Publication number
CN103962598A
CN103962598A CN201410228591.8A CN201410228591A CN103962598A CN 103962598 A CN103962598 A CN 103962598A CN 201410228591 A CN201410228591 A CN 201410228591A CN 103962598 A CN103962598 A CN 103962598A
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CN
China
Prior art keywords
expansion
shaft
forms
axle
thin
Prior art date
Application number
CN201410228591.8A
Other languages
Chinese (zh)
Other versions
CN103962598B (en
Inventor
程绍杨
张长秋
谢宁
刘世然
孟子茹
刘敬
孙岳城
Original Assignee
中核(天津)机械有限公司
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 中核(天津)机械有限公司 filed Critical 中核(天津)机械有限公司
Priority to CN201410228591.8A priority Critical patent/CN103962598B/en
Publication of CN103962598A publication Critical patent/CN103962598A/en
Application granted granted Critical
Publication of CN103962598B publication Critical patent/CN103962598B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B31/00Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/40Expansion mandrels
    • B23B31/404Gripping the work or tool by jaws moving radially controlled by conical surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B31/00Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/40Expansion mandrels
    • B23B31/404Gripping the work or tool by jaws moving radially controlled by conical surfaces
    • B23B31/4053Gripping the work or tool by jaws moving radially controlled by conical surfaces using fluid-pressure means to actuate the gripping means
    • B23B31/406Gripping the work or tool by jaws moving radially controlled by conical surfaces using fluid-pressure means to actuate the gripping means using mechanical transmission through the spindle

Abstract

The invention discloses an automatic expansion core clamp for thin-walled cylinder parts. The automatic expansion core clamp comprises a core shaft and a cylindrical expansion sleeve, wherein the core shaft consists of a fixing part, a limiting part and a taper shaft part; the inner wall of the cylindrical expansion sleeve is tapered; a through hole is formed in the closed end of the expansion sleeve; grooves are formed in the outer walls of two ends of the expansion sleeve; a retainer ring is arranged in each groove; a connecting shaft extends into central through holes in the core shaft and the expansion sleeve; one end of the connecting shaft is connected with a piston rod; a flange is arranged at one end, positioned outside the expansion sleeve, of the connecting shaft; a limiting flange is formed at the position close to the inner side surface of the closed end of the expansion sleeve; an axial key groove is formed in the outer wall, corresponding to a screw hole, of the connecting shaft; a screw is arranged in the screw hole, and one end of the screw extends into the key groove. By using a hydraulic source as a power source, the labor intensity is further alleviated, and the labor production rate is increased; the clamp is directly connected with a machine tool spindle through the screw, so that the rotation accuracy of the clamp is ensured; by virtue of the integrated design of the clamp, the reasonableness and the reliability of a clamp structure are greatly improved.

Description

The automatic expansion core fixture of thin-walled tube kind part
Technical field
The invention belongs to a kind of jig, be specifically related to the automatic expansion core turning clamp of a kind of thin-walled tube kind part.
Background technology
At present, the turning clamp of thin-walled tube kind part, mainly adopts hand to clamp and the automatic expansion core of separate type clamps two kinds.Hand clamping device, its shortcoming is that operator's labour intensity is large, labor productivity is low; The automatic expansion core fixture of separate type, installs more complicatedly, installs after finishing and needs its cylindrical to carry out turning processing, to ensure axiality requirement.Automatically expansion core formula turning clamp has solved the problems such as labour intensity is large, productivity ratio is low, installation is complicated.
Summary of the invention
The present invention proposes in order to overcome the shortcoming existing in prior art, its objective is and provides a kind of thin-walled tube kind part automatic expansion core fixture.
Technical scheme of the present invention is:
The automatic expansion core fixture of a kind of thin-walled tube kind part, comprise the mandrel, connecting axle and the expansion set that form central through hole, described mandrel is made up of fixed part, limiting section and awl shaft from left to right successively, one end of fixed part forms the chuck of flange and lathe and fixes, on limiting section, form locating hole radially, awl shaft is the circular cone shape that excircle is worn tapering; Described connecting axle stretches into the central through hole of mandrel, and one end is connected with the piston rod thread of hydraulic pump, and the other end forms the shaft shoulder, forms the axle collar near one end of the shaft shoulder, and described shaft shoulder outer circumference surface forms multiple uniform U-shaped breach; On the outer wall of the corresponding limiting section locating hole of connecting axle, form an axial keyway; Described alignment pin is installed in locating hole and one end is stretched in keyway; Described expansion set by multiple shape sizes all identical and cross section be fan-shaped expansion set monolithic and be fixed together and form by back-up ring, form in an end opening, other end sealing and blind end and be formed centrally the cylinder-like structure matching with connecting axle external diameter; The outer wall at each expansion set monolithic two ends all forms groove, and described back-up ring is installed in the annular groove being made up of the groove of multiple expansion set monolithics; One end of expansion set monolithic inwardly forms flange, and flange is placed between the axle collar and the shaft shoulder; Expansion set monolithic forms cylindrical hole near the end face of flange one side; Expansion set monolithic inner left wall forms tapering; Multiple straight pins are placed in respectively in the U-shaped breach of the shaft shoulder, and the cylindrical hole of each expansion set monolithic is stretched in one end.
The external diameter of the described axle collar is less than the external diameter of the shaft shoulder.
Distance between the width of described flange and the axle collar and the shaft shoulder matches.
The awl shaft excircle tapering of the inwall of described expansion set and mandrel is consistent and be slidably matched.
Fixed part and the limiting section of described mandrel are column type, and the external diameter of fixed part is greater than the external diameter of workpiece, the internal diameter matched in clearance of the external diameter of limiting section and workpiece.
The invention has the beneficial effects as follows:
The present invention adopts hydraulic pressure as power source, further reduces labor intensity and raises labour productivity; Fixture is directly connected with machine tool chief axis by screw, has ensured the rotating accuracy of fixture; The integrated design of fixture, has improved reasonability and the reliability of clamp structure greatly.
Brief description of the drawings
Fig. 1 is the front view of the automatic expansion core fixture of thin-walled tube kind part of the present invention;
Fig. 2 is the right view of the automatic expansion core fixture of thin-walled tube kind part of the present invention;
Fig. 3 is the front view of connecting axle in the present invention;
Fig. 4 is the right view of connecting axle in the present invention
Fig. 5 is the profile of expansion set monolithic in the present invention;
Fig. 6 is the right view of expansion set monolithic in the present invention.
Wherein:
1 mandrel 11 fixed parts
12 limiting section 13 awl shafts
14 locating hole 2 connecting axles
21 shaft shoulder 22 axle collars
The U-shaped breach of 23 keyway 24
3 expansion set 31 expansion set monolithics
32 groove 33 cylindrical holes
34 flange 4 alignment pins
5 back-up ring 6 straight pins
7 piston rod 8 workpiece
9 chucks.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the automatic expansion core fixture of thin-walled tube kind part of the present invention is elaborated:
As shown in Figure 1, the automatic expansion core fixture of a kind of thin-walled tube kind part, comprises the mandrel 1, connecting axle 2 and the expansion set 3 that form central through hole,
As shown in Figure 2,3, 4, described mandrel 1 is made up of fixed part 11, limiting section 12 and awl shaft 13 from left to right successively, it is fixing with the chuck 9 of lathe that one end of fixed part 11 forms flange, formation locating hole 14 radially on limiting section 12, and awl shaft 13 is worn the circular cone shape of tapering for excircle;
Described connecting axle 2 stretches into the central through hole of mandrel 1, and one end is threaded with the piston rod 7 of hydraulic pump, and the other end forms the shaft shoulder 21, forms the axle collar 22 near one end of the shaft shoulder 21, and the described shaft shoulder 21 outer circumference surfaces form multiple uniform U-shaped breach 24; On the outer wall of corresponding limiting section 12 locating holes 14 of connecting axle 2, form an axial keyway 23;
Described alignment pin 4 is installed in locating hole 14 and one end is stretched in keyway 23;
As shown in Figure 5,6, described expansion set 3 by multiple (the present embodiment is 8) shape size all identical and cross section be fan-shaped expansion set monolithic 31 and be fixed together and form by back-up ring 5, form in an end opening, other end sealing and blind end and be formed centrally the cylinder-like structure matching with connecting axle 2 external diameters; The outer wall at each expansion set monolithic 31 two ends all forms groove 32, and described back-up ring 5 is installed in the annular groove being made up of the groove 32 of multiple (the present embodiment is 8) expansion set monolithic 31; One end of expansion set monolithic 31 inwardly forms flange 34, and flange 34 is placed between the axle collar 22 and the shaft shoulder 21; Expansion set monolithic 31 forms cylindrical hole 33 near the end face of flange 34 1 sides; Expansion set monolithic 31 inner left wall form tapering;
Multiple (the present embodiment is 8) straight pin 6 is placed in respectively in the U-shaped breach 24 of the shaft shoulder 21, and the cylindrical hole 33 of each expansion set monolithic 31 is stretched in one end.
The external diameter of the described axle collar 22 is less than the external diameter of the shaft shoulder 21.
Distance between the width of described flange 34 and the axle collar 22 and the shaft shoulder 21 matches.
The awl shaft 13 excircle taperings of the inwall of described expansion set 3 and mandrel 1 are consistent and be slidably matched.
Fixed part 11 and the limiting section 12 of described mandrel 1 are column type, and the external diameter of fixed part 11 is greater than the external diameter of workpiece 8, the internal diameter matched in clearance of the external diameter of limiting section 12 and workpiece 8.
On connecting axle 2, be formed with keyway 23, the alignment pin 4 that opposite position is provided with locating hole 14 and plays the role of positioning on the limiting section 12 of mandrel 1 simultaneously, to prevent the rotation of connecting axle 2; Back-up ring 5 is fastened on expansion set 3 on mandrel 1, to prevent expansion set 3 plaies.
Using method of the present invention:
The present invention is taking hydraulic pressure as power source, power set are hydraulic cylinder, the interior kinetic energy that can be converted into piston rod 7 that hydraulic pressure is produced, making piston rod 7 promote connecting axle 2 moves back and forth, thereby make expansion set 3 with tapering along having awl shaft 13 linear reciprocating motions of the mandrel 1 of the tapering that matches with it, thereby tensioner workpiece 8 inwalls, reach the object that clamps and unclamp.
Hydraulic cylinder piston rod 7 pulls connecting axle 2 to left movement; Connecting axle 2 drives expansion set 3 with tapering along having the awl shaft 13 of mandrel 1 of the tapering that matches to left movement with it, impels expansion set 3 to expand, thus swelling workpiece 13; Move right when hydraulic cylinder piston rod 8 promotes connecting axle 2, the expansion set 3 of connecting axle 2 drives with tapering is along having the awl shaft 13 of the mandrel 1 of the tapering that matches to move right with it, and expansion set 3 restores to the original state, and tension force is eliminated, thereby unclamps workpiece 8 inwalls.

Claims (5)

1. the automatic expansion core fixture of thin-walled tube kind part, comprise the mandrel (1), connecting axle (2) and the expansion set (3) that form central through hole, it is characterized in that: described mandrel (1) is made up of fixed part (11), limiting section (12) and awl shaft (13) from left to right successively, it is fixing that one end of fixed part (11) forms the chuck (9) of flange and lathe, the upper locating hole (14) forming radially of limiting section (12), awl shaft (13) is worn the circular cone shape of tapering for excircle; Described connecting axle (2) stretches into the central through hole of mandrel (1), one end is threaded with the piston rod (7) of hydraulic pump, the other end forms the shaft shoulder (21), one end near the shaft shoulder (21) forms the axle collar (22), and the described shaft shoulder (21) outer circumference surface forms multiple uniform U-shaped breach (24); On the outer wall of the corresponding limiting section of connecting axle (2) (12) locating hole (14), form an axial keyway (23); Described alignment pin (4) is installed in locating hole (14) and one end is stretched in keyway (23); Described expansion set (3) by multiple shape sizes all identical and cross section be fan-shaped expansion set monolithic (31) and be fixed together and form by back-up ring (5), form in an end opening, other end sealing and blind end and be formed centrally the cylinder-like structure matching with connecting axle (2) external diameter; The outer wall at each expansion set monolithic (31) two ends all forms groove (32), and described back-up ring (5) is installed in the annular groove being made up of the groove (32) of multiple expansion set monolithics (31); One end of expansion set monolithic (31) inwardly forms flange (34), and flange (34) is placed between the axle collar (22) and the shaft shoulder (21); Expansion set monolithic (31) forms cylindrical hole (33) near the end face of flange (34) one sides; Expansion set monolithic (31) inner left wall forms tapering; Multiple straight pins (6) are placed in respectively in the U-shaped breach (24) of the shaft shoulder (21), and the cylindrical hole (33) of each expansion set monolithic (31) is stretched in one end.
2. the automatic expansion core fixture of a kind of thin-walled tube kind part according to claim 1, is characterized in that: the external diameter of the described axle collar (22) is less than the external diameter of the shaft shoulder (21).
3. the automatic expansion core fixture of a kind of thin-walled tube kind part according to claim 1, is characterized in that: the distance between the width of described flange (34) and the axle collar (22) and the shaft shoulder (21) matches.
4. the automatic expansion core fixture of a kind of thin-walled tube kind part according to claim 1, is characterized in that: awl shaft (13) the excircle tapering of the inwall of described expansion set (3) and mandrel (1) is consistent and be slidably matched.
5. the automatic expansion core fixture of a kind of thin-walled tube kind part according to claim 1, it is characterized in that: fixed part (11) and the limiting section (12) of described mandrel (1) are column type, the external diameter of fixed part (11) is greater than the external diameter of workpiece (8), the internal diameter matched in clearance of the external diameter of limiting section (12) and workpiece (8).
CN201410228591.8A 2014-05-28 2014-05-28 The automatic expansion core fixture of thin-walled tube kind part CN103962598B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410228591.8A CN103962598B (en) 2014-05-28 2014-05-28 The automatic expansion core fixture of thin-walled tube kind part

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CN103962598B CN103962598B (en) 2016-04-20

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104209774A (en) * 2014-08-20 2014-12-17 平湖市斯迈克机械制造有限公司 Pipe outer circle rough machining tool for machine tool
CN104440547A (en) * 2014-12-10 2015-03-25 重庆宜居门业有限公司 Clamping device for columnar leg cylindrical grinding
CN104511776A (en) * 2014-12-02 2015-04-15 重庆秦安机电股份有限公司 End face milling fixture for suspension convex platform at left side and right side of engine cylinder
CN104626250A (en) * 2014-12-30 2015-05-20 山东太阳纸业股份有限公司 Paper element chuck
CN104858464A (en) * 2015-06-10 2015-08-26 山东技师学院 Hydraulic expansion tire for numerical control machine tool
CN105149631A (en) * 2015-10-26 2015-12-16 重庆市银钢一通科技有限公司 Machine tool and clamp thereof
CN106808242A (en) * 2016-12-13 2017-06-09 嘉兴新维液压缸有限公司 Internal expanding external-compression type oil cylinder fixture
CN107186653A (en) * 2017-07-31 2017-09-22 中核(天津)科技发展有限公司 A kind of multi-point support intracavity tubular elements positioner and localization method
CN107202562A (en) * 2017-07-31 2017-09-26 中核(天津)科技发展有限公司 A kind of three coordinate measuring machine positioned based on multi-point support intracavity and measuring method
CN107218912A (en) * 2017-07-31 2017-09-29 中核(天津)科技发展有限公司 A kind of three coordinate measuring machine positioned based on expansible support inner chamber formula and measuring method
CN107246856A (en) * 2017-07-31 2017-10-13 中核(天津)科技发展有限公司 A kind of expansible support inner chamber formula tubular elements positioner and localization method
CN108296725A (en) * 2018-04-16 2018-07-20 杭州吉利机械有限公司 Split type differential casing internal expanding processing method
CN108723569A (en) * 2018-05-29 2018-11-02 南京六和普什机械有限公司 A kind of method of welding equipment and welding of automotive part
CN109277590A (en) * 2018-10-08 2019-01-29 广州市昊志机电股份有限公司 A kind of dabber clamp and chuck for installing
CN110740828A (en) * 2017-06-07 2020-01-31 海因布赫夹紧技术股份有限公司 Internal clamping device with fixed clamping segment ring
CN111195824A (en) * 2020-02-19 2020-05-26 江山市发发科技有限公司 Built-in cylinder driving type circular ring peripheral surface machining method and machining tool

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CN201076926Y (en) * 2007-09-14 2008-06-25 中冶京唐建设有限公司 Pipe chamfering auxiliary centering fixture for turning mill
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CN103100733A (en) * 2012-12-12 2013-05-15 重庆巨康建材有限公司 Hydraulic type wedge mechanism used for expanding mandrel
CN103464801A (en) * 2012-06-06 2013-12-25 海德堡印刷机械股份公司 Clamping device

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JPS5312679U (en) * 1977-07-12 1978-02-02
CN201076926Y (en) * 2007-09-14 2008-06-25 中冶京唐建设有限公司 Pipe chamfering auxiliary centering fixture for turning mill
DE202011051311U1 (en) * 2011-09-15 2012-09-18 EMUGE-Werk Richard Glimpel GmbH & Co. KG Fabrik für Präzisionswerkzeuge Clamping device for non-positive clamping of one or more workpieces with an internally toothed receiving bore
CN103464801A (en) * 2012-06-06 2013-12-25 海德堡印刷机械股份公司 Clamping device
CN103100733A (en) * 2012-12-12 2013-05-15 重庆巨康建材有限公司 Hydraulic type wedge mechanism used for expanding mandrel

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104209774A (en) * 2014-08-20 2014-12-17 平湖市斯迈克机械制造有限公司 Pipe outer circle rough machining tool for machine tool
CN104511776B (en) * 2014-12-02 2017-02-22 重庆秦安机电股份有限公司 End face milling fixture for suspension convex platform at left side and right side of engine cylinder
CN104511776A (en) * 2014-12-02 2015-04-15 重庆秦安机电股份有限公司 End face milling fixture for suspension convex platform at left side and right side of engine cylinder
CN104440547A (en) * 2014-12-10 2015-03-25 重庆宜居门业有限公司 Clamping device for columnar leg cylindrical grinding
CN104626250A (en) * 2014-12-30 2015-05-20 山东太阳纸业股份有限公司 Paper element chuck
CN104626250B (en) * 2014-12-30 2016-03-02 山东太阳纸业股份有限公司 A kind of refill chuck
CN104858464A (en) * 2015-06-10 2015-08-26 山东技师学院 Hydraulic expansion tire for numerical control machine tool
CN105149631A (en) * 2015-10-26 2015-12-16 重庆市银钢一通科技有限公司 Machine tool and clamp thereof
CN106808242A (en) * 2016-12-13 2017-06-09 嘉兴新维液压缸有限公司 Internal expanding external-compression type oil cylinder fixture
CN110740828A (en) * 2017-06-07 2020-01-31 海因布赫夹紧技术股份有限公司 Internal clamping device with fixed clamping segment ring
CN107202562A (en) * 2017-07-31 2017-09-26 中核(天津)科技发展有限公司 A kind of three coordinate measuring machine positioned based on multi-point support intracavity and measuring method
CN107218912A (en) * 2017-07-31 2017-09-29 中核(天津)科技发展有限公司 A kind of three coordinate measuring machine positioned based on expansible support inner chamber formula and measuring method
CN107246856A (en) * 2017-07-31 2017-10-13 中核(天津)科技发展有限公司 A kind of expansible support inner chamber formula tubular elements positioner and localization method
CN107186653A (en) * 2017-07-31 2017-09-22 中核(天津)科技发展有限公司 A kind of multi-point support intracavity tubular elements positioner and localization method
CN108296725A (en) * 2018-04-16 2018-07-20 杭州吉利机械有限公司 Split type differential casing internal expanding processing method
CN108723569A (en) * 2018-05-29 2018-11-02 南京六和普什机械有限公司 A kind of method of welding equipment and welding of automotive part
CN109277590A (en) * 2018-10-08 2019-01-29 广州市昊志机电股份有限公司 A kind of dabber clamp and chuck for installing
CN109277590B (en) * 2018-10-08 2021-01-08 广州市昊志机电股份有限公司 Mandrel clamp and mounting chuck
CN111195824A (en) * 2020-02-19 2020-05-26 江山市发发科技有限公司 Built-in cylinder driving type circular ring peripheral surface machining method and machining tool

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