CN106736668A - NC milling universal chuck - Google Patents

NC milling universal chuck Download PDF

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Publication number
CN106736668A
CN106736668A CN201611050054.4A CN201611050054A CN106736668A CN 106736668 A CN106736668 A CN 106736668A CN 201611050054 A CN201611050054 A CN 201611050054A CN 106736668 A CN106736668 A CN 106736668A
Authority
CN
China
Prior art keywords
mandrel
clamp body
universal chuck
resilient sleeve
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.)
Granted
Application number
CN201611050054.4A
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Chinese (zh)
Other versions
CN106736668B (en
Inventor
陈前亮
许兆美
吴海兵
薛建勋
洪宗海
李伯奎
金伟进
畅皓皓
冯清付
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.)
Huai'an Tianyi Hydraulic Machinery Co., Ltd
Original Assignee
Huaiyin Institute of Technology
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 Huaiyin Institute of Technology filed Critical Huaiyin Institute of Technology
Priority to CN201611050054.4A priority Critical patent/CN106736668B/en
Publication of CN106736668A publication Critical patent/CN106736668A/en
Application granted granted Critical
Publication of CN106736668B publication Critical patent/CN106736668B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06Work-clamping means

Abstract

The invention discloses NC milling universal chuck, including clamp body, mandrel component and hold down assembly;The mandrel component includes mandrel, is sheathed on tapered sleeve and set outside mandrel, and the mandrel is affixed with the clamp body, and the clamp body is connected with resilient sleeve by latch assembly, and the latch assembly can prevent resilient sleeve from rotating;Resilient sleeve has the taper hole being engaged with the tapered sleeve, the tapered sleeve is built with least two springs, the spring is set along the axisymmetrical of mandrel, and the elastic direction of spring is parallel with the axis of mandrel, described holding down assembly held down assembly and Work-sheet pressing component including mandrel, the mandrel holds down assembly can produce downward pressure to tapered sleeve, the pressure that the Work-sheet pressing component can be downward to workpiece generation.Fixture practicality of the invention is wide, the positioning precision of workpiece when ensure that processing in clamping.

Description

NC milling universal chuck
Technical field
The present invention relates to a kind of fixture, and in particular to a kind of dabber clamp for processing using hole as positioning.
Background technology
In with the jig Design of hole locating element, such as gear, process general with gear during gear on Digit Control Machine Tool End face and hole as benchmark, by processing to clamp base double-side grinding and necessary adjustment when fixture is installed ensures gear end The reliability of face positioning, but there are many difficulties during gear hole positioning, if the preceding position measurement hole of processing is out, processing Can Shi Bixu be clamped gear through gear hole using mandrel, gear position is ensured during pressing plate, bolt gripper It is not changed in, and often one gear of processing must just measure the position of a secondary aperture, therefore this method machining accuracy is difficult to protect Card is also not suitable for batch machining;Another method is exactly to process corresponding mandrel according to different gear apertures, due to gear hole During processing there is difference in the aperture of different gear holes, here it is the machining tolerance in aperture, the diameter of mandrel can only be small according to aperture Gear match somebody with somebody, also there is the gap that differs in size in coordinating between the big gear in aperture and mandrel so that the profile of gear with Gear hole produces coaxiality error, and this method gives workpiece in the case where gear hole and mandrel fit clearance are smaller in addition Dismounting brings very burden, the small lightweight also relatively good dismounting of part, and this will also lean on the operative skill of operator to ensure; Just relatively difficult during using hanging device if part comparison is big, lifting appliance is by the sensation of people it is difficult to ensure that workpiece is flat Weighing apparatus, thus easily causes the damage of mandrel and gear hole.
The content of the invention
The technical problem to be solved in the present invention is to provide NC milling universal chuck, and the fixture can be protected in clamping The positioning precision of workpiece during card processing.
In order to solve the above technical problems, the technical solution adopted by the present invention is:
A kind of NC milling universal chuck, including clamp body, mandrel component and hold down assembly;The mandrel component includes core Axle, is sheathed on tapered sleeve and set outside mandrel, and the mandrel is affixed with the clamp body, and the clamp body is connected with by latch assembly Resilient sleeve, and the latch assembly can prevent resilient sleeve from rotating;Resilient sleeve has the taper hole being engaged with the tapered sleeve, described Built with least two springs, the spring is set tapered sleeve along the axisymmetrical of mandrel, and spring elastic direction and mandrel Axis is parallel, and described holding down assembly held down assembly and Work-sheet pressing component including mandrel, and the mandrel holds down assembly can be right Tapered sleeve produces downward pressure, the pressure that the Work-sheet pressing component can be downward to workpiece generation.
Latch assembly can have no effect on the flexible of resilient sleeve while preventing resilient sleeve from rotating, such resilient sleeve it is interior The taper hole coaxiality error cylindrical with it would not influence the positioning precision of workpiece.When part aperture changes situation, only Changing the size of resilient sleeve external diameter just can be with.
In order to be further ensured that positioning precision, it is preferred that offer the first keyway on the tapered sleeve madial wall,
The mandrel offers second keyway corresponding with first keyway, the first keyway and the second key corresponding thereto Space between groove is fixed in the second keyway built with key, and the key by fastener.Tapered sleeve is installed on mandrel, due to The effect tapered sleeve of key can only be slided up and down on mandrel, it is not possible to be rotated, and so equally eliminate the endoporus and male cone (strobilus masculinus) of tapered sleeve Coaxiality error influence workpiece positioning precision.
Preferably, the latch assembly includes T-nut and soket head cap screw, and the clamp body passes through the T-nut It is affixed with the resilient sleeve with soket head cap screw.Latch assembly is at least provided with two.
Preferably, the Work-sheet pressing component includes work clamp and housing screw.
Preferably, for the utilization rate of expansion fixture, extension bar, institute can be used during for work pieces process highly higher Stating mandrel component also includes extension bar, and described extension bar one end is connected with the mandrel thread, the other end and the housing screw Threaded connection.
Preferably, the mandrel holds down assembly including the nut above the set.
Preferably, one end of the resilient sleeve is provided with three groove a, and it is mutual with groove b that the other end opens up three grooves b, the groove a Stagger.
Preferably, the clamp body upper surface offers some chip pockets and T-slot.Chip pocket and T-slot can be along straight Footpath direction is set, and after workpiece to be processed is installed on fixture, workpiece can be pressed into both forward and reverse directions and rotate about 90 degree or so, The chip remained on workpiece locating surface can so be cleaned out with T-slot using the chip pocket opened on clamp body.
Preferably, the fastener is screw, and the mandrel bottom is connected by alignment pin with platen.
Preferably, under not by external force state, the external diameter of the resilient sleeve is smaller than the aperture of workpiece 0.3 ~ 0.5 millimeter.So, In a free state(I.e. not by under external force state)Workpiece easily can be put on fixture, and item is applied by tapered sleeve during clamping Under pressure, and then make resilient sleeve radially strut so that the hole of workpiece is accurately positioned.
Alleged workpiece of the invention is included but is not limited to:Roller gear, conical gear, worm gear etc..
The beneficial effect that the present invention is reached:
Fixture of the invention can install the parts such as roller gear, conical gear, worm gear, and applicability is wide, and positioning precision is high, tears open Dress is convenient.
Brief description of the drawings
Fig. 1 is fixture general assembly drawing;
Fig. 2 is the B direction views of Fig. 1;
Fig. 3 is the A-A of Fig. 1 to profile;
Fig. 4 is the top view of resilient sleeve;
Fig. 5 be I in Fig. 1 at enlarged drawing;
Fig. 6 is the top view of clamp body;
Fig. 7 is A-A direction views in Fig. 6;
Fig. 8 is the structural representation of alignment pin;Wherein:
1. clamp body, 11. mounting holes, 12. chip pockets, 13.T type grooves, 14. alignment pins, 15. apertures, 2. mandrel, 21. mandrels Fixing screws, 22. extension bars, 23. second keyways, 24. keys, 25. fasteners, 3. resilient sleeve, 31. latch assemblies, 311. Soket head cap screw, 312. T-nuts, 32. groove a, 4. tapered sleeve, 41. springs, 42. first keyways, 5. cover, 6. nut, 7. work Part pressing plate, 8. spring shim, 9. housing screw, 10. workpiece.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention Technical scheme, and can not be limited the scope of the invention with this.
Below with workpiece:The present invention is further described as a example by roller gear:
As illustrated in fig. 1 and 2, NC milling universal chuck, including clamp body 1, mandrel component and hold down assembly;Mandrel component Including mandrel 2, tapered sleeve 4 and set 5 of the set 5 outside mandrel 2.The outer peripheral face of tapered sleeve 4 is the up big and down small conical surface, and fixture also includes Resilient sleeve 3, as shown in figure 4, resilient sleeve 3 has the taper hole coordinated with the conical-surface type of tapered sleeve 4, is provided with two inside grooves, often in tapered sleeve 4 Be respectively arranged with spring 41 in individual inside groove, spring 41 is set along the axisymmetrical of mandrel 2, and spring 41 elastic direction and mandrel 2 Axis is parallel.One end of resilient sleeve 3 is provided with three groove a32, and the other end opens up three groove b, and groove a32 mutually staggers with groove b.Tool Body, resilient sleeve 3 is processed using spring steel.
Mandrel 2 is affixed with clamp body 1 by mandrel fixing screws 21, and the low portion of mandrel 2 is placed in the endoporus of clamp body 1 In, and the bottom of mandrel 2 is affixed with platen by alignment pin 14.Specifically, the structure of alignment pin 14 is as shown in Figure 8, positioning Aperture 15 in the middle of pin 14 is air admission hole, is easy to the dismounting of alignment pin 14.Clamp body 1 passes through latch assembly 31 and the phase of resilient sleeve 3 Connect, and latch assembly 31 can prevent resilient sleeve 3 from rotating;As shown in figure 3, latch assembly 31 includes T-nut 312 and interior hexagonal Screw 311, clamp body 1 is affixed with resilient sleeve 3 by the T-nut 312 and soket head cap screw 311.As shown in figure 3, T-shaped spiral shell There is gap between female 312 and clamp body 1.Latch assembly 31 includes circumferentially arranged at least two.Latch assembly 31 can Have no effect on the flexible of resilient sleeve 3 while preventing resilient sleeve 3 from rotating, same cylindrical with it of the internal taper hole of such resilient sleeve 3 Axle degree error would not influence the positioning precision of workpiece 10.When part aperture changes situation, as long as changing outside resilient sleeve 3 The size in footpath just can be with.
As shown in figure 5, in order to be further ensured that positioning precision, the first keyway 42, mandrel 2 are offered on the madial wall of tapered sleeve 4 Offer second keyway 23 corresponding with first keyway 42, the first keyway 42 and the second keyway 23 corresponding thereto it Between space be fixed in the second keyway 23 by fastener 25 built with key 24, and key 24.The fastener 25 is screw.By tapered sleeve 4 are installed on mandrel 2, because the effect tapered sleeve 4 of key 24 can only be slided up and down on mandrel 2, it is not possible to rotate, so equally disappear The positioning precision of workpiece 10 is influenceed with the coaxiality error of male cone (strobilus masculinus) except the endoporus of tapered sleeve 4.
Hold down assembly to be held down assembly including mandrel and held down assembly with workpiece 10, mandrel holds down assembly can be produced to tapered sleeve 4 Downward pressure, including located at set top, and it is sheathed on the nut 6 of mandrel 2.Workpiece 10 holds down assembly can be produced to workpiece 10 Downward pressure.Workpiece 10 holds down assembly including the pressing plate 7 of workpiece 10, spring shim 8 and housing screw 9.
For the utilization rate of expansion fixture, extension bar, extension bar can be used when the workpiece 10 higher for height is processed 22 one end are threadedly coupled with mandrel 2, and the other end is threadedly coupled with housing screw 9.
As shown in fig. 6, the upper surface of clamp body 1, i.e., the one side for being contacted with the locating surface of workpiece 10, offer 4 chip pockets 12 With 2 T-slots.Chip pocket 12 and T-slot 13 can be with diametrically disposed, and chip pocket 12 is processed using ball head knife, from center Gradually deepen to cylindrical, such chip is easier cleaning, and the shape of chip pocket 12 is as shown in fig. 7, bottom is in the recessed of circular arc Groove is designed.After workpiece 10 to be processed is installed on fixture, workpiece 10 can be pressed both forward and reverse directions and rotate about 90 degree or so, The chip remained on the locating surface of workpiece 10 can so be cleaned out with T-slot using the chip pocket 12 opened on clamp body 1.
Not by under external force state, the external diameter of the resilient sleeve 3 is smaller than the aperture of workpiece 10 0.3 ~ 0.5 millimeter.So, certainly By under state(I.e. not by under external force state)Workpiece 10 easily can be put on fixture, and item is applied by tapered sleeve 4 during clamping Under pressure, and then strut the radial direction of resilient sleeve 3, so that the hole of workpiece 10 is accurately positioned.
When in use, handling steps are the mandrel fixture:
Mandrel 2 is fixed on clamp body 1 with mandrel fixing screws 21 first, the present embodiment central shaft fixing screws select three Individual, its number can be adjusted arbitrarily as needed.Then clamp body 1 is fixed to platen by mounting hole 11 thereon On, totally 6 in the mounting hole 11 in the present embodiment on clamp body 1, the quantity of mounting hole 11 and position can be according to the big of workpiece 10 Small and platen T-slot arrangement is adjusted.Additionally, clamp body 1 is positioned on lathe and used for convenience, and positioning The dismounting of pin 14, the center of mandrel 2 machined a circular hole, and air inlet duct is machined in circular hole bottom surface and side.Then by resilient sleeve 3 It is installed on mandrel 2, and tapered sleeve 4, key 24 and spring 41 is installed, it is fixed.Then, set is installed on mandrel 2, screws on nut 6, Now the preparation of fixture is completed, and next the conical gear blank of workpiece 10 is installed on clamp body 1, due to resilient sleeve 3 External diameter it is smaller than the aperture of conical gear blank 0.3 ~ 0.5 millimeter, so conical gear blank can easily be put into clamp body 1 On, now conical gear blank can be pressed both forward and reverse directions and rotate about 90 degree or so, so using 4 opened on clamp body 1 The chip that chip pocket 12 will can be remained with 2 T-slots on locating surface is cleaned out.Followed by box spanner tightening nut 6, Nut 6 will be such that set is moved axially downwards along mandrel 2, so that tapered sleeve 4 is moved down along mandrel 2, in the presence of tapered sleeve 4, by In the presence of taper, the radial direction of resilient sleeve 3 is strutted, and such conical gear blank is accurately positioned with hole.Conical gear blank is determined Behind position, workpiece 10 is compressed using housing screw 9, spring shim 8 and the pressing plate 7 of workpiece 10, conical gear blank clamping is finished.
After workpiece 10 is machined, pressing plate is removed, unclamp nut 6, at this moment in the presence of spring 41, tapered sleeve 4 is along mandrel 2 Move up, due to the effect of T-nut 312, resilient sleeve 3 can not be moved along mandrel 2, and resilient sleeve 3 is shunk, and workpiece 10 can be light Pine removes.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, on the premise of the technology of the present invention principle is not departed from, some improvement and deformation can also be made, these improve and deform Also should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of NC milling universal chuck, it is characterised in that including clamp body, mandrel component and holds down assembly;It is described Mandrel component includes mandrel, is sheathed on tapered sleeve and set outside mandrel, and the mandrel is affixed with the clamp body, and the clamp body leads to Cross latch assembly and be connected with resilient sleeve, and the latch assembly can prevent resilient sleeve from rotating;Resilient sleeve has and the tapered sleeve phase The taper hole of cooperation, built with least two springs, the spring is set the tapered sleeve along the axisymmetrical of mandrel, and spring bullet Property direction is parallel with the axis of mandrel, and described holding down assembly held down assembly and Work-sheet pressing component including mandrel, the mandrel Holding down assembly can produce downward pressure to tapered sleeve, the pressure that the Work-sheet pressing component can be downward to workpiece generation.
2. NC milling universal chuck according to claim 1, it is characterised in that opened up on the tapered sleeve madial wall There is the first keyway, the mandrel offers second keyway corresponding with first keyway, the first keyway and corresponding thereto The second keyway between space be fixed in the second keyway by fastener built with key, and the key.
3. NC milling universal chuck according to claim 2, it is characterised in that the latch assembly includes T-shaped Nut and soket head cap screw, the clamp body are affixed with the resilient sleeve by the T-nut and soket head cap screw.
4. NC milling universal chuck according to claim 3, it is characterised in that the Work-sheet pressing component includes Work clamp and housing screw.
5. NC milling universal chuck according to claim 4, it is characterised in that the mandrel component also include plus Stock, described extension bar one end is connected with the mandrel thread, and the other end is threadedly coupled with the housing screw.
6. the NC milling universal chuck according to claim any one of 1-5, it is characterised in that the mandrel is compressed Component includes the nut above the set.
7. the NC milling universal chuck according to claim any one of 1-5, it is characterised in that the resilient sleeve One end is provided with three groove a, and the other end opens up three groove b, and the groove a and groove b mutually staggers.
8. the NC milling universal chuck according to claim any one of 1-5, it is characterised in that on the clamp body End face offers some chip pockets and T-slot.
9. NC milling universal chuck according to claim 2, it is characterised in that the fastener is screw, institute Mandrel bottom is stated to be connected with platen by alignment pin.
10. NC milling universal chuck according to claim 1, it is characterised in that the latch assembly is included not Under by external force state, the external diameter of the resilient sleeve is smaller than the aperture of workpiece 0.3 ~ 0.5 millimeter.
CN201611050054.4A 2016-11-25 2016-11-25 NC milling universal chuck Active CN106736668B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611050054.4A CN106736668B (en) 2016-11-25 2016-11-25 NC milling universal chuck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611050054.4A CN106736668B (en) 2016-11-25 2016-11-25 NC milling universal chuck

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CN106736668A true CN106736668A (en) 2017-05-31
CN106736668B CN106736668B (en) 2018-08-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108436516A (en) * 2018-03-27 2018-08-24 安徽涌诚机械有限公司 Large size bearing seat casting mounting portion finishing fixture
CN110170869A (en) * 2019-06-25 2019-08-27 国营第六一六厂 It is a kind of to be not only accurately positioned but also finishing connecting rod shape fixture convenient for loading and unloading

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3674280A (en) * 1970-12-16 1972-07-04 Gleason Works Self-cleaning chuck
CN200960612Y (en) * 2006-09-30 2007-10-17 江苏飞船股份有限公司 Internal expansion positioning drill fixture
CN201702603U (en) * 2010-04-17 2011-01-12 殷祥瑞 Self-centering compensation type positioning mechanism
CN202984838U (en) * 2012-12-07 2013-06-12 江苏扬力集团有限公司 Gear hobbing tooling structure for fast positioning gear
WO2015063554A1 (en) * 2013-10-30 2015-05-07 The Gleason Works Arrangement for coupling a workpiece and chuck device
CN204673317U (en) * 2015-06-03 2015-09-30 浙江万里扬变速器股份有限公司 A kind of part processing expander positioner
CN105563180A (en) * 2016-02-05 2016-05-11 株洲市九洲传动机械设备有限公司 Self-centering clamp used for taper hole product
CN206185259U (en) * 2016-11-25 2017-05-24 淮阴工学院 Dabber anchor clamps are used in processing

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3674280A (en) * 1970-12-16 1972-07-04 Gleason Works Self-cleaning chuck
CN200960612Y (en) * 2006-09-30 2007-10-17 江苏飞船股份有限公司 Internal expansion positioning drill fixture
CN201702603U (en) * 2010-04-17 2011-01-12 殷祥瑞 Self-centering compensation type positioning mechanism
CN202984838U (en) * 2012-12-07 2013-06-12 江苏扬力集团有限公司 Gear hobbing tooling structure for fast positioning gear
WO2015063554A1 (en) * 2013-10-30 2015-05-07 The Gleason Works Arrangement for coupling a workpiece and chuck device
CN204673317U (en) * 2015-06-03 2015-09-30 浙江万里扬变速器股份有限公司 A kind of part processing expander positioner
CN105563180A (en) * 2016-02-05 2016-05-11 株洲市九洲传动机械设备有限公司 Self-centering clamp used for taper hole product
CN206185259U (en) * 2016-11-25 2017-05-24 淮阴工学院 Dabber anchor clamps are used in processing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108436516A (en) * 2018-03-27 2018-08-24 安徽涌诚机械有限公司 Large size bearing seat casting mounting portion finishing fixture
CN108436516B (en) * 2018-03-27 2020-08-18 安徽涌诚机械有限公司 Clamp for finish machining of large bearing seat casting installation part
CN110170869A (en) * 2019-06-25 2019-08-27 国营第六一六厂 It is a kind of to be not only accurately positioned but also finishing connecting rod shape fixture convenient for loading and unloading

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Effective date of registration: 20191203

Address after: 223300 Wang Ying Town Industrial Zone, Huaiyin District, Huaian, Jiangsu

Patentee after: Huai'an Tianyi Hydraulic Machinery Co., Ltd

Address before: 223003 Huaian city of Jiangsu Province, while the road No. 1

Patentee before: Huaijin Polytechnical College