CN102922450B - Clamping device for cylindrical surface test piece - Google Patents

Clamping device for cylindrical surface test piece Download PDF

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Publication number
CN102922450B
CN102922450B CN201210458720.3A CN201210458720A CN102922450B CN 102922450 B CN102922450 B CN 102922450B CN 201210458720 A CN201210458720 A CN 201210458720A CN 102922450 B CN102922450 B CN 102922450B
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CN
China
Prior art keywords
counterbore
chuck
clamping
subdivision
clamp
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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
CN201210458720.3A
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Chinese (zh)
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CN102922450A (en
Inventor
张冰蔚
鄢华林
唐炜
杨林初
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Jiangsu University of Science and Technology
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Jiangsu University of Science and Technology
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Priority to CN201210458720.3A priority Critical patent/CN102922450B/en
Publication of CN102922450A publication Critical patent/CN102922450A/en
Application granted granted Critical
Publication of CN102922450B publication Critical patent/CN102922450B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention provides a clamping device for a cylindrical surface test piece, which comprises an upper clamp body (1), a lower clamp (2), a flange sleeve (3), a spring (4), an inner taper sleeve (5), a split jacket (6), a plurality of steel balls (7), a supporting sleeve (8) and clamping handles (9). The clamping device has the benefits that through helical motion, the clamping device is combined with a tapered wedge surface to form a dual-force increasing mechanism and uniformly clamps a clamped test piece radially through the split jacket, a group of annularly-distributed steel balls with the same diameter is arranged between the inner taper sleeve and the lower clamp body to form a thrust bearing so as to reduce the frictional resistance, a spring is arranged between the inner taper sleeve and the upper clamp body to ensure that the inner taper sleeve automatically moves downwards along with the lower clamp body to be separated from the split jacket when loosened and clamped, the clamping handles are integrated into the clamping device without the need of an additional tool, the operation is simple and labor-saving, the clamping force is uniform, and the structure is compact and reliable. The invention provides the reliable cylindrical surface clamping device which is not liable to damage the test piece.

Description

A kind of clamping device for face of cylinder test specimen
Technical field
The present invention relates to a kind of clamping device, especially a kind of clamping device for face of cylinder test specimen.
Background technology
In some detection or experimental rig, need to clamp the workpiece on the face of cylinder or test specimen, the scroll chuck of lathe is a kind of device typically clamping for the face of cylinder, is characterized in that diameter of work accommodation is larger, and clamping force is large and have a Self-centering Action.But, because scroll chuck physical dimension is larger, during clamping, need rely on special-purpose square toes voltaic spanner to clamp successively three of circumference uniform distribution clamping points, may cause damage to clamping surface, and not be suitable for for the detection of finished product or test specimen and the clamping device in testing equipment.On the checkout equipment of some bulk article production lines, need to carry out Quick-clamped and unclamp and can not damage test specimen surface thering is workpiece or the test specimen of periphery, be characterized in that test specimen diameter excursion is less, and be not strict with centering, but require clamping and release simple operation reliable.For example on motorcycle front-wheel damper assembly line, need shock absorber to be vertically arranged on and on testing stand, to carry out exciter test test and show merit characteristic, its piston urceolus is the periphery through grinding chromium plating, traditional clamping device is to adopt the direct clamping mode of screw with subdivision chuck, it is simple in structure, but need to apply Wrench clamps or unclamps, and spanner wants switching repeatedly could to clamp and unclamp, and clamping area discontinuity.Therefore develop a kind of without auxiliary tools and clamp evenly face of cylinder clamping device reliably and there is good using value for requiring to clamp the evenly reliable and higher occasion of efficiency.
Summary of the invention
The invention provides a kind of clamping device for face of cylinder test specimen, the technical scheme of employing is as follows:
A clamping device for face of cylinder test specimen, is characterized in that: all component parts are rotary structure, comprises upper clamp 1, lower clamp 2, flange cover 3, spring 4, inner conical drogue 5, subdivision chuck 6, some steel balls 7, support set 8, a pair of clamping handgrip 9; Described upper clamp 1 lower semisection cylindrical is provided with external screw thread 1b, and central axis place, lower surface is provided with counterbore, and flange cover 3 and spring 4 are housed in counterbore, and center, upper surface is provided with a tapped through hole 1a as the interface being connected and fixed with outside; Described lower clamp 2 endoporus are followed successively by two sections of counterbores of size and a through hole from top to bottom, top counterbore is provided with internal thread 2a and upper clamp 1 external screw thread 1b matches, support set 8 is housed in the counterbore of bottom from bottom to top, support set 8 and lower clamp 2 bottom the counterbores interior some steel balls that arrange 7 of annular groove that surround and the inner conical drogue 5 being positioned at above steel ball 7, be provided with a pair of screwed hole screwing in for clamping handgrip 9 head threads in lower clamp 2 bottom cylindrical circumference symmetric positions; It is up big and down small ladder cylinder that described flange overlaps 3 cylindricals, big column and upper clamp 1 counterbore matched in clearance, and small column outside pocketed springs 4, flange overlaps 3 endoporus to be through hole and in upper surface, to be provided with little degree of depth counterbore; Described subdivision chuck 6 is thin-walled hollow cylindrical sleeve, being located at flange overlaps in 3 through holes and inner conical drogue 5, subdivision chuck 6 bottom cylindricals are provided with male cone (strobilus masculinus) 6a, inside is face of cylinder 6c, middle part cylindrical is provided with flange and overlaps the face of cylinder 6b that 3 through holes coordinate, subdivision chuck 6 upper ends are provided with in the upper end counterbore that outward flanging 6d is nested in flange cover 3, and jacket wall is provided with a groove 6e who axially connects completely and the axial non-groove 6f of some circle distribution along axis; Described inner conical drogue 5 cylindricals are up-small and down-big ladder cylinder, and the bottom of spring 4 is sleeved on the bottom of small column, and tapered sleeve 5 endoporus are the inner conical surface 5a identical with subdivision chuck 6 bottom male cone (strobilus masculinus) 6a cone angles; It is similar that described support set 8 and flange cover 3 is inverted shapes, and the annular groove width surrounding with lower clamp 2 bottom counterbores is greater than the diameter of steel ball 7, is highly less than steel ball 7 diameters.
Feature of the present invention and beneficial effect are: screw and circular cone wedge surface are combined into two force-increasing mechanisms and realize the even clamping radially of quilt folder test specimen by subdivision chuck, by arranging one group of annular spread between support set and lower clamp, with diameter steel ball, form thrust bearing and reduce frictional resistance, by guaranteeing automatically to move down with lower clamp and depart from subdivision chuck unclamping while clamping inner conical drogue spring is set between inner conical drogue and upper clamp, this clamping device is integrated in one clamping handgrip and clamping device, without auxiliary tools, simple to operate, laborsaving, clamping force part evenly, compact conformation, reliably, a kind of periphery reliable grip device of not easy damaged test specimen is provided.
Accompanying drawing explanation
Accompanying drawing 1; Conventional clamping apparatus stereogram;
Accompanying drawing 2: the present invention is along axis full sectional view (not clamp position);
Accompanying drawing 3: subdivision chuck stereogram;
Accompanying drawing 4: be that Fig. 2 clamps the state diagram after test specimen;
Accompanying drawing 5: be that Fig. 1 changes.
In figure: 1, upper clamp, 1a, tapped through hole, 1b, external screw thread, 2, lower clamp, 2a, internal thread, 3, flange cover, 4, spring, 5, inner conical drogue, 5a, inner conical surface, 6, subdivision chuck, 6a, male cone (strobilus masculinus), 6b, the face of cylinder, 6c, inner headed face, 6d, flange, 6e, groove, 6f, non-groove, 7, steel ball, 8, support set, 9, clamp handgrip, 10, test specimen.
The specific embodiment
Below by the present invention, for front damper of motorcycle assembly line, show that online the piston rod socket clamping device of merit testing stand is example, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment:
Fig. 1 is the simple and easy face of cylinder clamping device structure chart that at present tradition adopts, and chuck and a pinching screw by an incomplete subdivision form, and advantage is that structure is very simple, but the while also exposes some shortcoming and defect.Because chuck upper end need arrange screwed hole, be connected with outside, because not destroying top globality, chuck fluting can not be connected completely, make chuck contraction distortion when clamping inhomogeneous, concentrate on lower end and likely produce catcher mark with quilt folder Cylindrical Surfaces Contact face; Because relying on screw completely, clamping force screws in the application of force, need to be by repeatedly switching need apply larger torsion and could clamp of inner hexagon spanner, otherwise possible not clamping; In addition, chuck can only corresponding a kind of diameter workpiece or test specimen.
Fig. 2 is the cutaway view that the present invention crosses central axis, and because this installation composition part is all based on rotary structure, so this cutaway view has reflected structure and the position relationship of all compositions.Whole device is comprised of upper clamp 1, lower clamp 2, flange cover 3, spring 4, inner conical drogue 5, subdivision chuck 6, some steel balls 7, support set 8, clamping handgrip 9, fastening is to produce axial relative displacement by lower clamp 2 and the screw of upper clamp 1, and the voussoir reinforcement effect that axial displacement promotes between the inner conical surface 5a of inner conical drogue 5 and the male cone (strobilus masculinus) 6a of subdivision chuck 6 bottoms thus forces subdivision chuck 6 radial contraction to clamp test specimen 10.The function of each part is: upper clamp 1 and the body of lower clamp 2 as this device, a pair of clamping handgrip 9 is operating mechanism, screw between lower clamp 2 and upper clamp 1 is clamping drive mechanism, inner conical drogue 5 produces reinforcement and break-in force application mechanism with the relative displacement of subdivision chuck 6, support set 8 and some steel balls 7 are effort-saving mechanism, flange cover 3 positioners as subdivision chuck 6, the assist device while clamping is unclamped in spring 4 conducts.
In figure, upper clamp 1 upper end tapped through hole 1a provides this device and the outside interface being connected, external screw thread 1b by bottom cylindrical screws in and is connected with lower clamp 2 internal thread 2a, because upper clamp 1 is fixing, so produce moving axially of relative upper clamp 1 when by a pair of clamping handgrip 9 rotation lower clamp 2, lower clamp 2 is exactly the drive source that clamps and unclamp with respect to moving axially of upper clamp 1 simultaneously.Upper clamp 1 lower end counterbore is identical with lower clamp 2 bottom counter bore hole diameters synthesizes a cylindrical space, flange cover 3, spring 4, inner conical drogue 5, subdivision chuck 6, some steel balls 7 and support set 8 are arranged in the annulated column region of this cylindrical space, and inner remaining cylindrical space is left for by folder test specimen 10.Flange cover 3 is leaned the counterbore bottom at upper clamp 1 under the effect of spring 4, and flange overlaps the shallow counterbore of 3 upper ends and the flange 6d of subdivision chuck 6 coordinates the axial location that realizes subdivision chuck 6.It is similar that support set 8 and flange overlap 3 shapes, large end face abuts in the counterbore bottom of lower clamp 2, has been covered with steel ball 7, steel ball 7 origin or beginning spherical bearing effects between support set 8 tops and lower clamp 2 counterbores in the cannelure surrounding, change sliding friction into rolling friction, reach labor-saving effect.Steel ball 7 is inner conical drogue 5 above, the bottom cylindrical of inner conical drogue 5 and the counterbore of lower clamp 2 are slidably matched, it is identical with the male cone (strobilus masculinus) 6a cone angle of subdivision chuck 6 bottoms that inner conical drogue 5 is provided with the inner conical surface 5a of conical bore, and when diagram releasing orientation, inner conical drogue 5 keeps separated with subdivision chuck 6.For fear of unclamping the inner conical surface 5a of inner conical drogue 5 and the male cone (strobilus masculinus) 6a of subdivision chuck 6 while clamping, be adjacent to not separated, between flange cover 3 and inner conical drogue 5, be provided with spring 4, when in unclamping clamping process, lower clamp 2 moves down, under the promotion of spring 4, inner conical drogue 5 is followed simultaneously and is moved down.
Fig. 3 is the stereogram of subdivision chuck 6, outside is respectively equipped with male cone (strobilus masculinus) 6a, face of cylinder 6b, flange 6d from bottom to top, inner headed face 6c is clamping area, at circumference vertical direction, be provided with a groove 6e and some non-groove 6f, its effect is the radial rigidity that weakens subdivision chuck 6, makes it to be easy to hold tightly more equably by folder cylinder.
Fig. 4 is that Fig. 2 clamps the state diagram after test specimen, by rotating a pair of clamping handgrip 9, make to move on lower clamp 2 to drive simultaneously and on inner conical drogue 5, move and outer cone by inner conical surface 5a and subdivision chuck 6 is adjacent to the radial contraction that transfers subdivision chuck 6 to by moving axially, thereby clamp test specimen 10.
Because the testing equipment of the applied damper assembly line of the present embodiment need to adapt to the product of different size model, the diameter of test specimen 10 also can change thereupon, the upper clamp 1 of this device and lower clamp 2 be by meeting maximum grip diameter design, flange cover 3, inner conical drogue 5 and 6 three of the subdivision chucks that at this moment only needs to change different size can adapt to that change product brings by the variation of folder test specimen 10 diameters.During replacing, first lower clamp 2 is screwed off, screw in after changing flange cover 3, inner conical drogue 5 and subdivision chuck 6 again, to be Fig. 2 or Fig. 4 changing 6 three of the flange cover 3 of different size, inner conical drogue 5 and subdivision chucks to adapt to the views of test specimen 10 diameters variations to Fig. 5.
Because the present embodiment is clamping front damper of motorcycle piston urceolus, clamping device is vertically installed.During concrete operations, by test specimen 10 from below by manually holding insertion with hand steered, the spring action lower piston urceolus of portion can head in the counterbore of upper clamp 1 within it, with the hands pulls to clamp handgrip 9 and clamp.Because this device has adopted spiral and the dual force-increasing mechanism of voussoir, clamp laborsavingly, and clamping is evenly reliable.

Claims (1)

1. the clamping device for face of cylinder test specimen, it is characterized in that: all component parts are rotary structure, comprise upper clamp (1), lower clamp (2), flange cover (3), spring (4), inner conical drogue (5), subdivision chuck (6), some steel balls (7), support set (8), a pair of clamping handgrip (9); Described upper clamp (1) lower semisection cylindrical is provided with external screw thread (1b), central axis place, lower surface is provided with counterbore, flange cover (3) and spring (4) are housed in counterbore, and center, upper surface is provided with a tapped through hole (1a) as the interface being connected and fixed with outside; Described lower clamp (2) endoporus is followed successively by two sections of counterbores of size and a through hole from top to bottom, top counterbore is provided with internal thread (2a) and matches with upper clamp (1) external screw thread (1b), support set (8) is housed in the counterbore of bottom from bottom to top, some steel balls (7) that distribute in the annular groove that support set (8) and lower clamp (2) bottom counterbore surround and be positioned at steel ball (7) inner conical drogue (5) above, are provided with a pair of screwed hole for clamping handgrip (9) head threads screw-in in lower clamp (2) bottom cylindrical circumference symmetric position; Described flange cover (3) cylindrical is up big and down small ladder cylinder, big column and upper clamp (1) counterbore matched in clearance, and small column outside pocketed springs (4), flange cover (3) endoporus is through hole and in upper surface, is provided with little degree of depth counterbore; Described subdivision chuck (6) is thin-walled hollow cylindrical sleeve, be located in flange cover (3) through hole and inner conical drogue (5), subdivision chuck (6) bottom cylindrical is provided with male cone (strobilus masculinus) (6a), inside is the face of cylinder (6c), middle part cylindrical is provided with the face of cylinder (6b) coordinating with flange cover (3) through hole, subdivision chuck (6) upper end is provided with in the upper end counterbore that outward flanging (6d) is nested in flange cover (3), and jacket wall is provided with a groove (6e) axially connecting completely and the axial non-groove (6f) of some circle distribution along axis; Described inner conical drogue (5) cylindrical is up-small and down-big ladder cylinder, the bottom of spring (4) is sleeved on the bottom of small column, and tapered sleeve (5) endoporus is the inner conical surface (5a) identical with subdivision chuck (6) bottom male cone (strobilus masculinus) (6a) cone angle; It is similar that described support set (8) and flange cover (3) are inverted shape, and the annular groove width surrounding with lower clamp (2) bottom counterbore is greater than the diameter of steel ball (7), is highly less than steel ball (7) diameter.
CN201210458720.3A 2012-11-15 2012-11-15 Clamping device for cylindrical surface test piece Expired - Fee Related CN102922450B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210458720.3A CN102922450B (en) 2012-11-15 2012-11-15 Clamping device for cylindrical surface test piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210458720.3A CN102922450B (en) 2012-11-15 2012-11-15 Clamping device for cylindrical surface test piece

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CN102922450B true CN102922450B (en) 2014-11-05

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103101007B (en) * 2013-02-18 2015-05-27 成都九鼎科技(集团)有限公司 Damper indicator diagram test fixture
CN103801954B (en) * 2014-03-12 2016-03-09 无锡威孚马山油泵油嘴有限公司 A kind of clamp structure for the processing of plunger member chevron-notch
CN106425589B (en) * 2016-12-13 2018-12-18 广东工业大学 A kind of superthin section clamping tool

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Granted publication date: 20141105

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