CN112719983A - Tenon compresses tightly anchor clamps with transition piece - Google Patents
Tenon compresses tightly anchor clamps with transition piece Download PDFInfo
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- CN112719983A CN112719983A CN202011549449.5A CN202011549449A CN112719983A CN 112719983 A CN112719983 A CN 112719983A CN 202011549449 A CN202011549449 A CN 202011549449A CN 112719983 A CN112719983 A CN 112719983A
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- transition piece
- eccentric shaft
- mounting hole
- dovetail groove
- machined
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices 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
- B23Q3/06—Work-clamping means
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- Jigs For Machine Tools (AREA)
Abstract
The invention relates to a tenon compressing clamp with a transition piece, which comprises a clamp base, a dovetail groove and an eccentric shaft, wherein the dovetail groove is arranged at the top of the clamp base and penetrates through the clamp base, the eccentric shaft is rotatably arranged in a first mounting hole in the clamp base, a second mounting hole communicated with the dovetail groove penetrates through the first mounting hole, a pressing plate, a spherical transition piece and a sliding block are sequentially arranged in the second mounting hole from top to bottom, and the eccentric shaft is in contact with the sliding block. The eccentric shaft is rotated to enable the transition piece to extrude the pressing plate through the sliding block, the workpiece to be machined in the dovetail groove is pressed and fixed, the pressing plate achieves the function of self-adaptive adjustment of the inclination angle according to the automatic centering characteristic of the dovetail groove and the self-aligning property of the spherical surface, the repeated positioning precision of the workpiece to be machined is improved, meanwhile, the contact area of the pressing plate and the workpiece to be machined is increased, the fixing strength of the workpiece to be machined in the dovetail groove is improved, the eccentric shaft self-locking structure avoids the phenomenon that the workpiece to be machined is loosened during machining.
Description
Technical Field
The invention belongs to the technical field of positioning fixtures, and particularly relates to a tenon pressing fixture with a transition piece.
Background
In precision machining equipment, especially blade machining of an aircraft engine, due to the advantages of high machining efficiency, low cost and the like of an array machine tool, the array machine tool is more and more popularized, the requirements on the machining range and the machining efficiency of the array machine tool are higher and higher, and a clamp of the array blade machining machine tool becomes a short plate of the array machine tool more and more.
The existing array clamp has the problems of large volume, poor precision consistency, inconvenient assembly and disassembly and the like, and limits the processing precision consistency and the processing efficiency of the array machine tool.
Disclosure of Invention
The invention provides a tenon pressing clamp with a transition piece, which aims to solve the problems that the precision of the clamp is poor, the disassembly is inconvenient, and the consistency of the processing precision of an array machine tool is restricted.
The invention is realized by the following technical scheme.
The utility model provides a tenon compresses tightly anchor clamps with transition piece, includes anchor clamps base, dovetail, eccentric shaft, slider, transition piece and clamp plate, the dovetail set up in the top of anchor clamps base is run through the anchor clamps base, first mounting hole has been seted up to anchor clamps base side, the eccentric shaft rotate install in first mounting hole, set up on the anchor clamps base with the dovetail intercommunication runs through the second mounting hole of first mounting hole, clamp plate, transition piece and slider set gradually from top to bottom in the second mounting hole, the transition piece is the ball-type, the bottom of clamp plate be equipped with transition piece matched with recess, the eccentric shaft contacts with the slider to adjust the height of slider at the second mounting hole through rotating the eccentric shaft. The transition piece is jacked up through the sliding block by rotating the eccentric shaft, the pressing plate is extruded to compress and fix the workpiece to be machined in the dovetail groove, the pressing plate realizes the function of self-adaptive adjustment of the inclination angle according to the automatic centering characteristic of the dovetail groove and the self-centering property of the spherical surface, the repeated positioning precision of the workpiece to be machined is improved, meanwhile, the contact area of the pressing plate and the workpiece to be machined is increased, and the fixing strength of the workpiece to be machined in the dovetail groove is improved.
The invention is further improved by arranging a through hole for allowing the eccentric shaft to pass through on the slide block, and rotating the eccentric shaft to adjust the height of the slide block. The eccentric shaft adjusts the displacement of the sliding block through the through hole so as to improve the precision control of the displacement adjusting amplitude.
In a further development of the invention, the top face of the slide is provided with a recess which cooperates with the transition piece. The position of the transition piece is limited by the groove on the top surface of the sliding block, the transition piece is prevented from rolling randomly, and further the clamping firmness degree and the repeated positioning precision of the workpiece to be machined in the dovetail groove are reduced.
In a further development of the invention, the maximum depth of the grooves in the slide and in the pressure plate is smaller than the radius of the transition piece. When the transition piece is used for jacking the pressing plate, the pressing plate can adapt to different workpieces to be processed, and the pressing plate is adjusted by taking the transition piece as a rotating shaft, so that the largest contact area with the workpieces to be processed is achieved.
The eccentric shaft is further improved, an annular groove is formed in the eccentric shaft, a first fixing hole communicated with the first mounting hole is formed in the side face of the clamp base, the first fixing hole corresponds to the annular groove, and a first limiting piece which is embedded into the annular groove and limits axial displacement of the eccentric shaft is arranged in the first fixing hole. The annular groove of first locating part and eccentric shaft contacts, to the ascending removal restriction of eccentric shaft in the axial, avoids taking place axial displacement when operating the eccentric shaft and influences the tight degree of clamp of treating the machined part.
The invention further improves that one end of the eccentric shaft is connected with a handle through a clamp spring. The operation convenience degree of the eccentric shaft is improved through the handle.
The fixture further comprises an operating platform, wherein a third limiting piece is arranged on the operating platform, and a third fixing hole matched with the third limiting piece is formed in the bottom of the fixture base. Fix the anchor clamps base on the operation panel through third locating part, improve off-the-shelf machining precision.
According to a further improvement of the invention, a workpiece to be machined is arranged in the dovetail groove, a second fixing hole is formed in at least one side of the second mounting hole in the dovetail groove, and a second limiting piece for limiting the workpiece to be machined is arranged in the second fixing hole. The axial displacement of the workpiece to be machined in the dovetail groove is limited through the second limiting part, so that the workpiece to be machined is pressed downwards and upwards right finally by the part in the second mounting hole.
According to the technical scheme, the invention has the beneficial effects that: the transition piece is jacked up through the sliding block by rotating the eccentric shaft, the pressing plate is extruded to compress and fix the workpiece to be machined in the dovetail groove, the pressing plate realizes the function of self-adaptive adjustment of the inclination angle according to the automatic centering characteristic of the dovetail groove and the self-centering property of the spherical surface, the repeated positioning precision of the workpiece to be machined is improved, meanwhile, the contact area of the pressing plate and the workpiece to be machined is increased, and the fixing strength of the workpiece to be machined in the dovetail groove is improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a perspective view of an embodiment of the present invention.
FIG. 2 is a side schematic view of an embodiment of the present invention.
FIG. 3 is a schematic cross-sectional view taken along the line A in accordance with an embodiment of the present invention.
FIG. 4 is a schematic view of the cross section along the direction B in accordance with the embodiment of the present invention.
In the drawings: 1. the fixture comprises a fixture base, 11, a dovetail groove, 12, a handle, 121, a clamp spring, 13, a first fixing hole, 131, a first limiting piece, 14, a first mounting hole, 141, an eccentric shaft, 15, a second mounting hole, 151, a sliding block, 1511, a through hole, 152, a transition piece, 153, a pressing plate, 16, a second fixing hole, 161, a second limiting piece, 17, a third fixing hole, 171, a third limiting piece, 2 and a workpiece to be machined.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present embodiment, and it is apparent that the embodiments described below are only a part of embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.
As shown in the drawing, the tenon clamping fixture with the transition piece comprises a fixture base 1, a dovetail groove 11, an eccentric shaft 141, a slide block 151, a transition piece 152 and a pressure plate 153, the dovetail groove 11 is arranged on the top of the fixture base 1 and penetrates through the fixture base 1, a first mounting hole 14 is formed on the side surface of the clamp base 1, the eccentric shaft 141 is rotatably mounted in the first mounting hole 14, the fixture base 1 is provided with a second mounting hole 15 which is communicated with the dovetail groove 11 and penetrates through the first mounting hole 14, the pressing plate 153, the transition piece 152 and the sliding block 151 are sequentially arranged in the second mounting hole 15 from top to bottom, the transition piece 152 is spherical, the bottom of the pressure plate 153 is provided with a groove matched with the transition piece 152, the eccentric shaft 141 is in contact with the sliding block 151, and the height of the slider 151 at the second mounting hole 15 is adjusted by rotating the eccentric shaft 141. The transition piece 152 is jacked up through the sliding block 151 by rotating the eccentric shaft 141, the pressing plate 153 is further squeezed to compress and fix the workpiece 2 to be machined in the dovetail groove 11, the pressing plate 153 realizes the function of adaptively adjusting the inclination angle according to the automatic centering characteristic of the dovetail groove 11 and the self-centering property of the spherical surface, the repeated positioning precision of the workpiece 2 to be machined is improved, meanwhile, the contact area of the pressing plate 153 and the workpiece 2 to be machined is increased, and the fixing strength of the workpiece 2 to be machined in the dovetail groove 11 is improved.
The first mounting hole 14 is a diameter-variable circular hole. To facilitate the mounting of eccentric shaft 141 in first mounting hole 14.
The eccentric shaft 141 is provided with a self-locking structure. The self-locking structure of the eccentric shaft 141 avoids loosening and reducing the precision of finished products when the workpiece 2 to be processed is processed, and the detachable convenience is improved.
A through hole 1511 allowing the eccentric shaft 141 to pass through is formed in the slider 151, and the height of the slider 151 is adjusted by rotating the eccentric shaft 141. The through hole 1511 is an elliptical hole fitted with a protrusion of the eccentric shaft 141. Eccentric shaft 141 adjusts the displacement of slider 151 through hole 1511 to improve the precision control of the displacement adjustment amplitude.
The top surface of the sliding block 151 is provided with a groove matched with the transition piece 152. The position of the transition piece 152 is limited by the groove on the top surface of the sliding block 151, so that the transition piece 152 is prevented from rolling freely, and the clamping firmness of the workpiece 2 to be machined in the dovetail groove 11 is reduced. The position of the transition piece 152 is limited by the groove on the top surface of the sliding block 151, so that the transition piece 152 is prevented from rolling randomly, and the clamping firmness degree and the repeated positioning precision of the workpiece 2 to be processed in the dovetail groove 11 are reduced.
The maximum depth of the grooves on the slider 151 and the pressure plate 153 is less than the radius of the transition piece 152. When the pressing plate 153 is pressed by the transition piece 152, different workpieces 2 to be processed can be adapted, and the pressing plate 153 is adjusted by using the transition piece 152 as a rotating shaft so as to achieve the maximum contact area with the workpieces 2 to be processed.
An annular groove is formed in the eccentric shaft 141, a first fixing hole 13 communicated with the first mounting hole 14 is formed in the side surface of the clamp base 1, the first fixing hole 13 corresponds to the annular groove, and a first limiting part 131 which is embedded into the annular groove and limits axial displacement of the eccentric shaft 141 is arranged in the first fixing hole 13. By contacting the first limiting member 131 with the annular groove of eccentric shaft 141, the movement of eccentric shaft 141 in the axial direction is limited, and the clamping degree of workpiece 2 to be processed is prevented from being affected by the axial displacement generated when eccentric shaft 141 is operated.
The first limiting member 131 is a bidirectional fixing screw. The first limiting member 131 is prevented from slipping out of the first fixing hole 13 due to vibration.
One end of the eccentric shaft 141 is connected with a handle 12 through a snap spring 121. The ease of operation of eccentric shaft 141 is improved by handle 12.
The utility model provides a tenon compresses tightly anchor clamps with transition piece, still includes the operation panel, be equipped with third locating part 171 on the operation panel, 1 bottom of anchor clamps base be equipped with third locating part 171 assorted third fixed orifices 17. The fixture base 1 is fixed on the operation table by the third stopper 171, and the machining accuracy of the finished product is improved.
The workpiece 2 to be machined is arranged in the dovetail groove 11, at least one side of the second mounting hole 15 in the dovetail groove 11 is provided with a second fixing hole 16, and a second limiting part 161 for limiting the workpiece 2 to be machined is arranged in the second fixing hole 16. The axial displacement of the member to be machined 2 in the dovetail groove 11 is limited by the second stopper 161 so that the member to be machined 2 is finally pressed right down and up by the component in the second mounting hole 15.
The piece 2 to be machined may be an aircraft engine blade or other component whose base may be secured in a dovetail slot 11.
According to the tenon pressing fixture with the transition piece, the transition piece is jacked up through the sliding block by rotating the eccentric shaft, the pressing plate is further extruded to press and fix the workpiece to be machined in the dovetail groove, the pressing plate achieves the function of self-adaptive adjustment of the inclination angle according to the automatic centering characteristic and the spherical self-centering property of the dovetail groove, the repeated positioning precision of the workpiece to be machined is improved, meanwhile, the contact area of the pressing plate and the workpiece to be machined is increased, the fixing strength of the workpiece to be machined in the dovetail groove is improved, the eccentric shaft self-locking structure avoids looseness during machining of the workpiece to be machined, the precision of a finished product is reduced, and the.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative positions if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The tenon pressing fixture with the transition piece is characterized by comprising a fixture base (1), a dovetail groove (11), an eccentric shaft (141), a sliding block (151), the transition piece (152) and a pressing plate (153), wherein the dovetail groove (11) is arranged at the top of the fixture base (1) and penetrates through the fixture base (1), a first mounting hole (14) is formed in the side surface of the fixture base (1), the eccentric shaft (141) is rotatably mounted in the first mounting hole (14), a second mounting hole (15) communicated with the dovetail groove (11) and penetrating through the first mounting hole (14) is formed in the fixture base (1), the pressing plate (153), the transition piece (152) and the sliding block (151) are sequentially arranged in the second mounting hole (15) from top to bottom, the transition piece (152) is of a spherical shape, a groove matched with the transition piece (152) is formed in the bottom of the pressing plate (153), the eccentric shaft (141) is in contact with the sliding block (151), and the height of the sliding block (151) in the second mounting hole (15) is adjusted by rotating the eccentric shaft (141).
2. The tenon clamping fixture with the transition piece according to claim 1, wherein the slide block (151) is provided with a through hole (1511) for allowing the eccentric shaft (141) to pass through, and the slide block (151) is adjusted in height by rotating the eccentric shaft (141).
3. The transition piece-equipped tenon compression jig according to claim 2, wherein the top surface of the slide block (151) is provided with a groove for fitting with the transition piece (152).
4. The transition piece-equipped tenon compression jig of claim 3, wherein the maximum depth of the grooves in the slide block (151) and the pressure plate (153) is less than the radius of the transition piece (152).
5. The tenon clamping fixture with the transition piece according to claim 1, wherein an annular groove is formed in the eccentric shaft (141), a first fixing hole (13) communicated with the first mounting hole (14) is formed in a side surface of the fixture base (1), the first fixing hole (13) corresponds to the annular groove, and a first limiting piece (131) which is embedded in the annular groove and limits axial displacement of the eccentric shaft (141) is arranged in the first fixing hole (13).
6. The tenon compression jig with the transition piece according to claim 1, wherein a handle (12) is connected to one end of the eccentric shaft (141) through a circlip (121).
7. The tenon clamping fixture with the transition piece according to claim 1, further comprising an operation table, wherein a third limiting piece (171) is arranged on the operation table, and a third fixing hole (17) matched with the third limiting piece (171) is arranged at the bottom of the fixture base (1).
8. The tenon pressing jig with the transition piece according to any one of claims 1 to 7, wherein a workpiece (2) to be machined is arranged in the dovetail groove (11), the second mounting hole (15) is provided with a second fixing hole (16) at least on one side in the dovetail groove (11), and a second limiting piece (161) for limiting the workpiece (2) to be machined is arranged in the second fixing hole (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011549449.5A CN112719983A (en) | 2020-12-24 | 2020-12-24 | Tenon compresses tightly anchor clamps with transition piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011549449.5A CN112719983A (en) | 2020-12-24 | 2020-12-24 | Tenon compresses tightly anchor clamps with transition piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112719983A true CN112719983A (en) | 2021-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011549449.5A Pending CN112719983A (en) | 2020-12-24 | 2020-12-24 | Tenon compresses tightly anchor clamps with transition piece |
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| CN (1) | CN112719983A (en) |
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| US5462294A (en) * | 1994-07-01 | 1995-10-31 | Wendhack; Kurt F. | Collet adapter for converting machine vise to an orthogonal collet fixture |
| DE19961901A1 (en) * | 1999-12-20 | 2001-07-12 | Schunk Gmbh & Co Kg | Workpiece chuck e.g. for flow machine rotor blade, uses chuck plates with axially adjustable clamp rods, with reference clamp rods used for workpiece positioning |
| CN202763716U (en) * | 2012-06-26 | 2013-03-06 | 中联重科股份有限公司 | Pressing piece of workpiece clamping device, workpiece clamping device and workpiece position changing machine |
| CN103158045A (en) * | 2011-12-19 | 2013-06-19 | 沈阳黎明航空发动机(集团)有限责任公司 | Universal composite swelling device for blade grind |
| CN103223606A (en) * | 2013-05-16 | 2013-07-31 | 西北工业大学 | Universal clamp for numerical-control machining and precise positioning of blade |
| CN103801958A (en) * | 2014-03-04 | 2014-05-21 | 广西玉柴机器股份有限公司 | Pipe fitting positioning fixture |
| CN104308729A (en) * | 2014-10-11 | 2015-01-28 | 天津市中马骏腾精密机械制造有限公司 | Support plate grinding fixture |
| CN109128917A (en) * | 2018-10-24 | 2019-01-04 | 郑州亨睿精密机械科技有限公司 | It is a kind of can automatic adjusument aluminum products fixture for processing |
| CN110270862A (en) * | 2019-08-05 | 2019-09-24 | 恩欣格工程塑料（上海）有限公司 | A kind of quick fixed clamping device for numerical control machining center |
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2020
- 2020-12-24 CN CN202011549449.5A patent/CN112719983A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5462294A (en) * | 1994-07-01 | 1995-10-31 | Wendhack; Kurt F. | Collet adapter for converting machine vise to an orthogonal collet fixture |
| DE19961901A1 (en) * | 1999-12-20 | 2001-07-12 | Schunk Gmbh & Co Kg | Workpiece chuck e.g. for flow machine rotor blade, uses chuck plates with axially adjustable clamp rods, with reference clamp rods used for workpiece positioning |
| CN103158045A (en) * | 2011-12-19 | 2013-06-19 | 沈阳黎明航空发动机(集团)有限责任公司 | Universal composite swelling device for blade grind |
| CN202763716U (en) * | 2012-06-26 | 2013-03-06 | 中联重科股份有限公司 | Pressing piece of workpiece clamping device, workpiece clamping device and workpiece position changing machine |
| CN103223606A (en) * | 2013-05-16 | 2013-07-31 | 西北工业大学 | Universal clamp for numerical-control machining and precise positioning of blade |
| CN103801958A (en) * | 2014-03-04 | 2014-05-21 | 广西玉柴机器股份有限公司 | Pipe fitting positioning fixture |
| CN104308729A (en) * | 2014-10-11 | 2015-01-28 | 天津市中马骏腾精密机械制造有限公司 | Support plate grinding fixture |
| CN109128917A (en) * | 2018-10-24 | 2019-01-04 | 郑州亨睿精密机械科技有限公司 | It is a kind of can automatic adjusument aluminum products fixture for processing |
| CN110270862A (en) * | 2019-08-05 | 2019-09-24 | 恩欣格工程塑料（上海）有限公司 | A kind of quick fixed clamping device for numerical control machining center |
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