CN112207591B - High-speed cutting clamp for small-diameter workpiece - Google Patents
High-speed cutting clamp for small-diameter workpiece Download PDFInfo
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- CN112207591B CN112207591B CN202011096989.2A CN202011096989A CN112207591B CN 112207591 B CN112207591 B CN 112207591B CN 202011096989 A CN202011096989 A CN 202011096989A CN 112207591 B CN112207591 B CN 112207591B
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- rod
- clamp body
- locking
- shaped workpieces
- pressing
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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
-
- 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
- B23Q3/061—Work-clamping means adapted for holding a plurality of workpieces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a high-speed cutting clamp for small-diameter workpieces, which comprises a columnar clamp body, wherein a positioning groove coaxial with the clamp body is formed in the center of the upper end of the clamp body, a convex ring is formed at the upper end of the clamp body by the positioning groove, a locking top is detachably arranged in the positioning groove, the outer side wall of the locking top is matched with the inner side wall of the positioning groove, a plurality of clamping grooves are uniformly distributed on the upper end surface of the convex ring along the circumferential direction, each clamping groove extends along the radial direction of the convex ring, the cross section of each clamping groove is in a shape of a major arc, rod-shaped workpieces are placed in the clamping grooves, the inner ends of the rod-shaped workpieces are positioned through the outer side wall of the locking top, the outer ends of the rod-shaped workpieces protrude out of the clamp body, the top ends of the rod-shaped workpieces protrude out of the clamping grooves, and a pressing mechanism for pressing the rod-shaped workpieces is arranged above the convex ring of the clamp body. Compared with the prior art, the invention has the following advantages: under the condition of not changing the running speed of a main shaft of a machine tool, the cutting linear speed of the metal glass is improved.
Description
Technical Field
The invention relates to a cutting clamp, in particular to a high-speed cutting clamp for a small-diameter workpiece.
Background
The characteristics of high hardness, low elastic modulus, low heat conductivity coefficient and the like of the metal glass make the metal glass a typical difficult-to-machine material, and the problems of serious tool abrasion and high machining cost are found in the existing cutting machining experiment. For example, the Vit1 type metallic glass has low machinability due to the defects of high hardness, room temperature brittleness and the like, which brings great difficulty to mechanical cutting and forming processing, the plasticity of the metallic glass is reduced along with the increase of the cutting temperature, and the material shows superplasticity when the cutting temperature reaches the glass transition temperature of the workpiece material. Therefore, in the machining process, the machining precision of the metal glass cannot meet the production requirement due to high cutting temperature, large cutting force and the like, and even the amorphous structure of the material is changed, so that the metal glass loses the excellent performance of the metal glass. On the other hand, since the cutting rate has the greatest influence on the cutting temperature among the three cutting dose factors, the cutting rate is an important factor affecting the cutting performance of the metallic glass and the wear of the cutting tool, and therefore, it is necessary to study the high-speed cutting of the metallic glass.
Metallic glasses are alloys that form without crystallization upon rapid cooling below the glass transition temperature Tg (e.g., less than 1 second), and currently the maximum diameter can be made as large as 10 millimeters, because if the metal in the molten state is too large in diameter and the internal cooling rate is not achieved, metallic glasses cannot be formed. Therefore, only rod-shaped workpieces with small diameters can be made of the metal glass materials. If the rod-shaped workpiece is directly clamped by the existing lathe fixture, the workpiece rotates around the axis of the workpiece along with the rotation of the lathe spindle, and the surface of the rotating rod-shaped workpiece is cut by the cutter, because the radius of the rotating rod-shaped workpiece is smaller, namely the cutting radius is smaller, and the linear speed of cutting is in direct proportion to the cutting radius, the linear speed of cutting is smaller, the requirement of high-speed cutting cannot be met, and the research on the mechanical processing of metal glass materials is not facilitated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-speed cutting clamp for small-diameter workpieces, so that the cutting linear speed of metal glass is improved under the condition of not changing the running speed of a main shaft of a machine tool.
The invention is realized by the following technical scheme:
the high-speed cutting clamp for small-diameter workpieces comprises a columnar clamp body, a positioning groove coaxial with the clamp body is formed in the center of the upper end of the clamp body, a convex ring is formed in the upper end of the clamp body through the positioning groove, a locking top is detachably arranged in the positioning groove, the outer side wall of the locking top is matched with the inner side wall of the positioning groove, a plurality of clamping grooves are uniformly distributed on the upper end face of the convex ring along the circumferential direction, each clamping groove radially extends along the convex ring, the cross section of each clamping groove is in a shape of a major arc, the clamping grooves are used for containing rod-shaped workpieces, the inner ends of the rod-shaped workpieces are positioned through the outer side wall of the locking top, the outer ends of the rod-shaped workpieces protrude out of the clamp body, the top ends of the rod-shaped workpieces protrude out of the clamping grooves, and a pressing mechanism used for pressing the rod-shaped workpieces is arranged above the convex ring of the clamp body.
Furthermore, hold-down mechanism includes clamp plate, locking plate, double-screw bolt, lock nut, and the clamp plate is the annular plate and is located the bulge loop top, and the clamp plate top is stamped the locking plate, open at the specific constant head tank bottom center of clamp has the pressure screw, with the double-screw bolt from last down pass in the specific pressure screw of screw in clamp after locking plate, clamp plate, the locking top in proper order to screw on the double-screw bolt with lock nut on the locking plate, thereby compress tightly whole hold-down mechanism in the top of a plurality of bulge loops, realize compressing tightly a plurality of bar-shaped work pieces.
Furthermore, a plurality of cover opening screw holes which are communicated up and down are formed in the locking top.
Furthermore, the inner ring of the convex ring is flush with the inner ring of the pressing plate, and the outer ring of the convex ring protrudes out of the outer ring of the pressing plate.
Furthermore, a spring washer is arranged between the locking nut and the locking plate.
Compared with the prior art, the invention has the following advantages:
1. the small-diameter workpiece high-speed cutting clamp provided by the invention has the advantages that a plurality of small-diameter rod-shaped workpieces are placed in a plurality of clamping grooves which are uniformly distributed on the clamp body along the circumferential direction, the plurality of rod-shaped workpieces are pressed by the pressing mechanism, then the clamp is arranged on a lathe, the whole clamp body rotates around the axial lead of the clamp body, and a cutter is contacted with the rod-shaped workpieces which protrude out of the outer side wall of the clamp body during cutting to realize cutting, so that the cutting radius is greatly increased, the cutting linear speed is greatly improved, the requirement on high-speed cutting of the small-diameter metal glass rod-shaped workpieces is met, and the research on the machining performance of a metal glass material is facilitated. In addition, the clamp can improve the linear cutting speed, so that the cutting speed is relatively high, the friction coefficient is reduced, the cutting force can be reduced, and the processing precision of the metal glass can be improved.
2. According to the high-speed cutting clamp for the small-diameter workpieces, the plurality of rod-shaped workpieces are uniformly distributed along the circumferential direction of the clamp body, a cutter does not need to cut in the time between two adjacent rod-shaped workpieces during cutting, the cutting force applied by the cutter is intermittent, the cutting force is reduced compared with the continuous cutting force, the cutter and the rod-shaped workpieces are periodically separated, so that the cutter can be fully cooled, the cutting temperature can be reduced, the durability of the cutter is greatly improved, and the service life of the cutter is prolonged.
3. According to the high-speed cutting clamp for the small-diameter workpieces, the inner ends of the rod-shaped workpieces are positioned through the locking top, the positioning accuracy of the workpieces is guaranteed, and good guarantee is provided for subsequent cutting.
4. The high-speed cutting clamp for the small-diameter workpiece, provided by the invention, has the advantages that the structure of the pressing mechanism is simple, the pressing or loosening of the pressing mechanism can be realized by screwing or loosening the locking nut, and the operation is simple, convenient and quick.
5. According to the high-speed cutting clamp for the small-diameter workpiece, the cross section of the clamping groove is designed to be in the shape of an optimal arc, so that the rod-shaped workpiece can be accurately installed, the rod-shaped workpiece can be prevented from falling off to a certain extent, and the normal operation of the subsequent cutting process is ensured.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a longitudinal sectional view of the present invention.
Fig. 3 is a top view of the present invention.
Figure 4 is a perspective view of a clamp body of the present invention,
figure 5 is a top view of the clamp body of the present invention.
Reference numbers in the figures: 1, a fixture body; 2, positioning a groove; 3, a convex ring; 4, locking the top; 5, clamping a groove; 6, a rod-shaped workpiece; 7, pressing a plate; 8, locking a plate; 9, a stud; 10 locking the nut; 11 a spring washer; 12 pressing the screw hole; 13 opening the screw hole.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
Referring to fig. 1 to 5, the embodiment discloses a high-speed cutting clamp for small-diameter workpieces, including a cylindrical clamp body 1, a positioning groove 2 coaxial with the clamp body 1 is formed in the center of the upper end of the clamp body 1, a convex ring 3 is formed at the upper end of the clamp body 1 by the positioning groove 2, a locking top 4 is detachably arranged in the positioning groove 2, the outer side wall of the locking top 4 is matched with the inner side wall of the positioning groove 2, a plurality of clamping grooves 5 are uniformly distributed on the upper end surface of the convex ring 3 along the circumferential direction, each clamping groove 5 extends along the radial direction of the convex ring 3, the cross section of each clamping groove 5 is in a shape of a major arc, rod-shaped workpieces 6 are placed in the clamping grooves 5, the inner ends of the rod-shaped workpieces 6 are positioned by the outer side wall of the locking top 4, the outer ends of the rod-shaped workpieces 6 protrude out of the clamp body 1, the top ends of the rod-shaped workpieces 6 protrude out of the clamping grooves 5, and a pressing mechanism for pressing the rod-shaped workpieces 6 is arranged above the convex ring 3 of the clamp body 1.
Specifically, the pressing mechanism comprises a pressing plate 7, a locking plate 8, a stud 9 and a locking nut 10, wherein the pressing plate 7 is an annular plate and is positioned above the convex ring 3, the inner ring of the pressing plate 7 is flush with the inner ring of the convex ring 3, and the outer ring of the convex ring 3 protrudes out of the outer ring of the pressing plate 7; a locking plate 8 is covered above the pressure plate 7. The center of the bottom of the positioning groove 2 of the clamp body 1 is provided with a pressing screw hole 12, a stud 9 sequentially penetrates through a spring washer 11, a locking plate 8, a pressing plate 7 and a locking top 4 from top to bottom and then is screwed into the pressing screw hole 12 of the clamp body 1, and a locking nut 10 is screwed on the stud 9 on the locking plate 8, so that the whole pressing mechanism is pressed above the convex rings 3, and the pressing of the rod-shaped workpieces 6 is realized. In order to ensure the locking effect, a spring washer 11 is also provided between the locking nut 10 and the locking plate 8. For the convenience of disassembly and assembly, the stud 9 can be a double-end stud 9.
The locking top 4 is provided with a plurality of cover opening screw holes 13 which are communicated up and down, when the locking top 4 needs to be detached, the locking top 4 can be ejected out of the positioning groove 2 by screwing screws into the cover opening screw holes 13, so that the locking top 4 can be detached easily, and after the locking top 4 is detached, enough operation space is reserved for detaching subsequent workpieces.
When the clamp is installed, the locking top 4 is firstly placed into the positioning groove 2 of the clamp body 1, and the locking top 4 and the positioning groove 2 can be in interference fit or clearance fit. Then a plurality of rod-shaped workpieces 6 are respectively inserted into a plurality of clamping grooves 5 on the clamp body 1, and when the inner ends of the rod-shaped workpieces 6 are abutted against the locking top 4, the rod-shaped workpieces are inserted in place. Then a pressing plate 7, a locking plate 8 and a spring washer 11 are respectively placed above the rod-shaped workpieces 6, then the stud 9 sequentially penetrates through the spring washer 11, the locking plate 8, the pressing plate 7 and the locking top 4 from top to bottom and then is screwed into a pressing screw hole 12 of the fixture body 1, and a locking nut 10 is screwed on the stud 9 on the spring washer 11, so that the whole pressing mechanism is pressed above the convex rings 3, the pressing of the rod-shaped workpieces 6 is realized, and the installation of the whole fixture is completed. Then, the whole mounted jig is mounted on a chuck of a machine tool, the jig body 1 rotates together with the chuck of the machine tool, and the portions of the plurality of rod-like workpieces 6 protruding out of the jig body 1 are cut by a cutter of the machine tool.
The cutting direction of the clamp provided by the embodiment is different from the cutting machining direction of the traditional clamp, but the research on the cutting problem is not influenced. The subsequent studies on the cut metallic glass rod-shaped workpiece 6 mainly include: firstly, the influence of the cutting speed of the metal glass on the cutting temperature is researched, which needs higher cutting speed, and the traditional clamp can not meet the requirement; secondly, the influence of the cutting speed of the metal glass on the surface roughness is researched, a certain cutting speed is also needed, and the traditional clamp has limited cutting speed and cannot meet the requirement; thirdly, researching the influence rule of the cutting speed on the cutting force; fourthly, the law of influence of the cutting speed on the crystallization of the processed surface is a deeper and more thorough research which can be carried out only by needing high cutting speed. The cutting speed provided by the traditional clamp is very low, and the minimum requirement of a metal glass rapid cutter falling experiment on the speed cannot be met.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. High-speed cutting jig of minor diameter work piece, its characterized in that: the clamp comprises a columnar clamp body, wherein a positioning groove coaxial with the clamp body is formed in the center of the upper end of the clamp body, a convex ring is formed at the upper end of the clamp body by the positioning groove, a locking top is detachably arranged in the positioning groove, the outer side wall of the locking top is matched with the inner side wall of the positioning groove, a plurality of clamping grooves are uniformly distributed on the upper end surface of the convex ring along the circumferential direction, each clamping groove extends along the radial direction of the convex ring, the cross section of each clamping groove is in a shape of a major arc, rod-shaped workpieces are placed in the clamping grooves, the inner ends of the rod-shaped workpieces are positioned through the outer side wall of the locking top, the outer ends of the rod-shaped workpieces protrude out of the clamp body, the top ends of the rod-shaped workpieces protrude out of the clamping grooves, and a pressing mechanism used for pressing the rod-shaped workpieces is arranged above the convex ring of the clamp body;
the pressing mechanism comprises a pressing plate, a locking plate, a stud and a locking nut, the pressing plate is an annular plate and is located above the convex rings, the locking plate is covered on the pressing plate, a pressing screw hole is formed in the center of the bottom of the positioning groove of the clamp body, the stud sequentially penetrates through the locking plate, the pressing plate and the locking top from top to bottom and is screwed on the stud by the locking nut, and therefore the whole pressing mechanism is pressed above the convex rings, and the pressing of the plurality of rod-shaped workpieces is achieved.
2. The small-diameter workpiece high-speed cutting jig according to claim 1, characterized in that: and the locking top is provided with a plurality of cover opening screw holes which are communicated up and down.
3. The small-diameter workpiece high-speed cutting jig according to claim 1, characterized in that: the inner ring of the convex ring is flush with the inner ring of the pressing plate, and the outer ring of the convex ring protrudes out of the outer ring of the pressing plate.
4. The small-diameter workpiece high-speed cutting jig according to claim 1, characterized in that: and a spring washer is arranged between the locking nut and the locking plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011096989.2A CN112207591B (en) | 2020-10-14 | 2020-10-14 | High-speed cutting clamp for small-diameter workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011096989.2A CN112207591B (en) | 2020-10-14 | 2020-10-14 | High-speed cutting clamp for small-diameter workpiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112207591A CN112207591A (en) | 2021-01-12 |
| CN112207591B true CN112207591B (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011096989.2A Active CN112207591B (en) | 2020-10-14 | 2020-10-14 | High-speed cutting clamp for small-diameter workpiece |
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| CN (1) | CN112207591B (en) |
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| KR101600778B1 (en) * | 2015-08-26 | 2016-03-08 | 박타명 | Clamping apparatus for laminated workpieces |
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| CN105538003A (en) * | 2016-02-29 | 2016-05-04 | 西安交通大学 | Multi-station bar material cutting fixture workbench for wire sawing machine tool |
| CN107398747A (en) * | 2017-09-22 | 2017-11-28 | 安庆安簧汽车零部件有限公司 | A kind of stabiliser bar geometrical clamp facing fixture |
| EP3338940A1 (en) * | 2016-12-20 | 2018-06-27 | Alexander Wimmer | Processing device with programmed controls |
| CN110842238A (en) * | 2019-11-22 | 2020-02-28 | 南京信息职业技术学院 | Multi-cylinder synchronous centering clamping device |
| CN211389623U (en) * | 2019-12-30 | 2020-09-01 | 青岛宝丰石墨制品有限公司 | Turning tool clamp for machining graphite mold |
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2020
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|---|---|---|---|---|
| CN102717332A (en) * | 2012-05-30 | 2012-10-10 | 郑州市钻石精密制造有限公司 | Dedicated clamp for abrasive buff stick |
| CN203636483U (en) * | 2013-11-20 | 2014-06-11 | 江西华友机械有限公司 | Machining clamp capable of simultaneously machining arcs for multiple workpieces |
| CN104647095A (en) * | 2013-11-20 | 2015-05-27 | 江西华友机械有限公司 | Machining fixture for both end faces of multiple workpieces |
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| CN112207591A (en) | 2021-01-12 |
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