CN113600853B - Machine tool clamping structure - Google Patents
Machine tool clamping structure Download PDFInfo
- Publication number
- CN113600853B CN113600853B CN202110991792.3A CN202110991792A CN113600853B CN 113600853 B CN113600853 B CN 113600853B CN 202110991792 A CN202110991792 A CN 202110991792A CN 113600853 B CN113600853 B CN 113600853B
- Authority
- CN
- China
- Prior art keywords
- chuck
- machine tool
- sub
- swinging
- positioning
- 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.)
- Active
Links
- 238000007667 floating Methods 0.000 claims abstract description 16
- 210000000078 claw Anatomy 0.000 claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/103—Retention by pivotal elements, e.g. catches, pawls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention discloses a clamping structure of a machine tool, which belongs to the field of clamps and comprises a pull rod and a chuck, wherein the pull rod is provided with a first inclined surface, the chuck is provided with a second inclined surface, the first inclined surface is matched with the second inclined surface, the axial movement of the pull rod enables the chuck to radially move along the pull rod, the clamping structure of the machine tool further comprises a plurality of swinging blocks, a plurality of floating structures and a plurality of sub-claws, each swinging block is rotatably arranged on the chuck and limits the swinging quantity through the floating structures, the sub-claws are arranged on each swinging block and jointly clamp a workpiece, the plurality of sub-claws jointly clamp the workpiece through the design, the thin-wall circular ring is not easy to deform, the swinging blocks are rotatably arranged on the chuck and limit the swinging quantity through the floating structures, and the clamping precision is high and the stability is good.
Description
Technical Field
The invention relates to a clamping structure, in particular to a machine tool clamping structure.
Background
The machine tool is an industrial master machine and has important significance in the national industrial development process. According to statistics, the machine tool production value of China is ranked first from the 2008 world, and import and consumption are continuously performed for eight years world first. The machine tool clamping structure is an indispensable part of the machine tool, and plays an important role in improving machining precision and efficiency.
When the product to be clamped is a thin-wall circular ring, the traditional machine tool clamping structure is complex in structure, the thin-wall circular ring is easy to deform when clamped, and the clamping precision is low and the stability is poor.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the purposes of the invention is to provide a machine tool clamping structure which is not easy to deform a thin-wall circular ring, and has high clamping precision and good stability.
One of the purposes of the invention is realized by adopting the following technical scheme:
the utility model provides a lathe clamping structure, includes pull rod and chuck, the pull rod is equipped with first inclined plane, the chuck is equipped with the second inclined plane, first inclined plane with the cooperation of second inclined plane, pull rod axial displacement makes the chuck is followed the radial removal of pull rod, lathe clamping structure still includes a plurality of swinging blocks, a plurality of floating structure and a plurality of sub-claw, every the swinging block rotate install in the chuck and pass through floating structure restriction pendulum volume, every install on the swinging block sub-claw, a plurality of sub-claw centre gripping work piece jointly.
Further, the floating structure comprises an elastic piece, and the elastic piece is fixed on the swinging block and is abutted against the chuck.
Further, the elastic piece is a spring piece.
Further, the machine tool clamping structure further comprises a positioning assembly, the positioning assembly comprises a positioning pin and a fixing plate, and the swinging block is rotatably installed on the chuck through the positioning pin and the fixing plate.
Further, the machine tool clamping structure further comprises a female claw, the female claw is fixed on the chuck, and the swinging block is rotatably installed on the female claw through the positioning pin and the fixing plate.
Further, the swing block is provided with a mounting groove, and the sub-claw is mounted in the mounting groove and can adjust the position in the mounting groove.
Further, anti-skid patterns are arranged on the swinging blocks, and the anti-skid patterns are arranged on two sides of each mounting groove.
Further, each swing block is fixedly provided with a plurality of sub-claws.
Further, the machine tool clamping structure further comprises an axial positioning structure, the axial positioning structure comprises a fixing piece and a positioning rod, the fixing piece is fixed on the chuck, the positioning rod is fixed on the fixing piece, and the tail end of the positioning rod abuts against the workpiece.
Further, the locating rod is a threaded rod, and the extension length of the locating rod can be adjusted by rotating the locating rod relative to the fixing piece.
Compared with the prior art, the machine tool clamping structure further comprises a plurality of swinging blocks, a plurality of floating structures and a plurality of sub-claws, each swinging block is rotatably arranged on the chuck and limits the swinging amount through the floating structures, the sub-claws are arranged on each swinging block, the plurality of sub-claws jointly clamp a workpiece, the plurality of sub-claws jointly clamp the workpiece, the thin-wall ring is not easy to deform, the swinging blocks are rotatably arranged on the chuck and limit the swinging amount through the floating structures, and the clamping precision is high and the stability is good.
Drawings
FIG. 1 is a perspective view of a machine tool clamping structure of the present invention;
FIG. 2 is a perspective cross-sectional view of the machine tool clamping structure of FIG. 1;
fig. 3 is an enlarged view at the machine tool holding structure a of fig. 2.
In the figure: 10. a pull rod; 11. a first inclined surface; 20. a chuck; 21. a second inclined surface; 30. a female claw; 40. a fastener; 50. a positioning assembly; 51. a positioning pin; 52. a fixing plate; 60. a swinging block; 61. a mounting groove; 62. anti-skid lines; 70. a floating structure; 71. an elastic member; 72. a mounting member; 80. a sub-claw; 90. an axial positioning structure; 91. a fixing piece; 92. a fixing member; 93. a positioning rod; 200. a workpiece.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or be present as another intermediate element through which the element is fixed. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Fig. 1 to 3 show a machine tool holding structure of the present invention, which includes a draw rod 10, a chuck 20, a female jaw 30, a fastener 40, a positioning assembly 50, a swinging block 60, a floating structure 70, a sub-jaw 80, and an axial positioning structure 90.
The pull rod 10 is provided with a first inclined surface 11, and the first inclined surface 11 is located on the outer surface of the pull rod 10.
The chuck 20 is provided with a second inclined surface 21, and the inclination angle of the second inclined surface 21 corresponds to the first inclined surface 11. The second inclined surface 21 is located in the inner bore of the chuck 20. The pull rod 10 is mounted inside the chuck 20, and the first inclined surface 11 is engaged with the second inclined surface 21. When the pull rod 10 moves axially, the chuck 20 moves radially on the pull rod 10 in cooperation with the first inclined surface 11 and the second inclined surface 21.
The female jaws 30 are secured to the chuck 20 by fasteners 40.
The number of the positioning assemblies 50 is plural, and each positioning assembly 50 includes a positioning pin 51 and a fixing plate 52. The positioning pin 51 has a T-shaped cross section. The positioning pin 51 extends into the female pawl 30 and the swinging block 60 is engaged with the fixed plate 52, so that the swinging block 60 is rotatably mounted on the female pawl 30.
The swinging block 60 is provided with a mounting groove 61 and an anti-slip pattern 62, and the mounting groove 61 is used for mounting the sub-claw 80. The anti-slip threads 62 are located on either side of the mounting groove 61 to prevent the sub-pawl 80 from moving after being forced. The swinging block 60 is provided with a plurality of mounting grooves 61 to facilitate the mounting of the plurality of sub-claws 80. In the present embodiment, two sub-pawls 80 are provided on each swinging block 60.
The floating structure 70 includes an elastic member 71 and a mounting member 72. The elastic member 71 is a spring plate. The elastic member 71 is fixed to the swinging block 60 by a mount member 72. The side edges of the female claws 30 are flat, and the elastic members 71 are attached to the side edges of the female claws 30.
The number of sub-claws 80 is plural, and each sub-claw 80 is mounted in the mounting groove 61 of the swinging block 60 by a screw and a nut. The sub-pawl 80 can be adjusted in position in the mounting slot 61 to accommodate workpieces 200 of different sizes.
The axial positioning structure 90 includes a fixing piece 91, a fixing piece 92, and a positioning rod 93. The fixing piece 91 is provided with a kidney-shaped hole, and the fixing piece 91 is fixed to the female claw 30 by extending a screw into the kidney-shaped hole and being matched with the female claw 30. The fixing piece 91 can adjust the position of the female claw 30 through the kidney-shaped hole to adapt to workpieces 200 of different sizes. The positioning rod 93 is a threaded rod, and the positioning rod 93 is rotatably mounted on the fixing piece 91, and the tail end of the positioning rod 93 abuts against the workpiece 200, so that the workpiece 200 is axially positioned. The positioning rod 93 is rotated, and the extension length of the positioning rod 93 is changed, so that the workpiece 200 with different heights is suitable.
When using the machine tool holding structure, the workpiece 200 is first placed on the plurality of swinging blocks 60. In this embodiment, the workpiece 200 is a thin-walled ring. The pull rod 10 moves axially (retreats), and the chuck 20 moves radially (gathers) on the pull rod 10 by the engagement of the first inclined surface 11 and the second inclined surface 21. At this time, the chuck 20 moves the sub-jaws 80 on the swing block 60 to clamp the workpiece 200. When the sub-claw 80 moves to the limit position, the elastic piece 71 is abutted against the side wall of the main claw 30, so that floating clamping is realized, the position of a clamping point of the sub-claw 80 is automatically adjusted according to the shape of the workpiece 200, the shape of the workpiece 200 is self-adapted, the workpiece 200 is clamped, the deformation of the workpiece 200 is reduced to the maximum extent, and the roundness of the thin-wall ring is ensured. In the clamping process, when the swinging block 60 swings, the elastic piece 71 is abutted against the side wall of the female claw 30, and the swinging amount of the swinging block 60 is limited by the elastic piece 71, so that the clamping precision of the machine tool clamping structure is high, and the stability is good. The positioning rod 93 of the axial positioning structure 90 positions the workpiece 200 in the axial direction of the workpiece 200.
The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, it is possible to make several modifications and improvements without departing from the concept of the present invention, which are equivalent to the above embodiments according to the essential technology of the present invention, and these are all included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a lathe clamping structure, includes pull rod and chuck, the pull rod is equipped with first inclined plane, the chuck is equipped with the second inclined plane, first inclined plane with the cooperation of second inclined plane, pull rod axial displacement makes the chuck is followed pull rod radial displacement, its characterized in that: the machine tool clamping structure further comprises a plurality of swinging blocks, a plurality of floating structures and a plurality of sub-claws, each swinging block is rotatably arranged on the chuck and limits the swinging quantity through the floating structures, each swinging block is provided with the sub-claw, and the sub-claws clamp a workpiece together;
the floating structure comprises an elastic piece and a mounting piece, wherein the elastic piece is fixed on the swinging block through the mounting piece and is abutted against the chuck;
the elastic piece is a spring piece;
the machine tool clamping structure further comprises a positioning assembly, wherein the positioning assembly comprises a positioning pin and a fixing plate, and the swinging block is rotatably arranged on the chuck through the positioning pin and the fixing plate;
the swing block is provided with a mounting groove, and the sub-claw is mounted in the mounting groove and can adjust the position in the mounting groove;
the machine tool clamping structure further comprises an axial positioning structure, the axial positioning structure comprises a fixing piece and a positioning rod, the fixing piece is fixed on the chuck, the positioning rod is fixed on the fixing piece, and the tail end of the positioning rod abuts against a workpiece.
2. A machine tool holding structure according to claim 1, wherein: the machine tool clamping structure further comprises a female claw, the female claw is fixed on the chuck, and the swinging block is rotatably installed on the female claw through the locating pin and the fixing plate.
3. A machine tool holding structure according to claim 1, wherein: the swing block is provided with anti-skid patterns, and both sides of each mounting groove are provided with the anti-skid patterns.
4. A machine tool holding structure according to claim 1, wherein: and a plurality of sub-claws are fixed on each swinging block.
5. A machine tool holding structure according to claim 1, wherein: the locating rod is a threaded rod, and the extension length of the locating rod can be adjusted by rotating the locating rod relative to the fixing piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110991792.3A CN113600853B (en) | 2021-08-26 | 2021-08-26 | Machine tool clamping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110991792.3A CN113600853B (en) | 2021-08-26 | 2021-08-26 | Machine tool clamping structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113600853A CN113600853A (en) | 2021-11-05 |
| CN113600853B true CN113600853B (en) | 2024-03-22 |
Family
ID=78309434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110991792.3A Active CN113600853B (en) | 2021-08-26 | 2021-08-26 | Machine tool clamping structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113600853B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201271745Y (en) * | 2008-09-05 | 2009-07-15 | 苏州勤美达精密机械有限公司 | Bidirectional floating holding jaw |
| CN201271744Y (en) * | 2008-08-25 | 2009-07-15 | 苏州勤美达精密机械有限公司 | Floating holding jaw |
| CN201744683U (en) * | 2010-06-30 | 2011-02-16 | 山西汾西重工有限责任公司 | Special chuck |
| CN105665765A (en) * | 2016-03-29 | 2016-06-15 | 西安法士特汽车传动有限公司 | Three-jaw twelve-point floating clamping claw |
| CN206083891U (en) * | 2016-08-31 | 2017-04-12 | 常州倍得福机械科技有限公司 | Holder formula chuck |
| CN206854684U (en) * | 2017-05-27 | 2018-01-09 | 苏州勤堡精密机械有限公司 | A kind of three-jaw clamping device |
| CN207508316U (en) * | 2017-09-11 | 2018-06-19 | 重庆川仪调节阀有限公司 | Floating clamping device |
-
2021
- 2021-08-26 CN CN202110991792.3A patent/CN113600853B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201271744Y (en) * | 2008-08-25 | 2009-07-15 | 苏州勤美达精密机械有限公司 | Floating holding jaw |
| CN201271745Y (en) * | 2008-09-05 | 2009-07-15 | 苏州勤美达精密机械有限公司 | Bidirectional floating holding jaw |
| CN201744683U (en) * | 2010-06-30 | 2011-02-16 | 山西汾西重工有限责任公司 | Special chuck |
| CN105665765A (en) * | 2016-03-29 | 2016-06-15 | 西安法士特汽车传动有限公司 | Three-jaw twelve-point floating clamping claw |
| CN206083891U (en) * | 2016-08-31 | 2017-04-12 | 常州倍得福机械科技有限公司 | Holder formula chuck |
| CN206854684U (en) * | 2017-05-27 | 2018-01-09 | 苏州勤堡精密机械有限公司 | A kind of three-jaw clamping device |
| CN207508316U (en) * | 2017-09-11 | 2018-06-19 | 重庆川仪调节阀有限公司 | Floating clamping device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113600853A (en) | 2021-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201960389U (en) | Automobile braking hub numerical control vertical lathe fixture | |
| CN208496447U (en) | A kind of compressor crank shaft adjustable eccentric clamping head | |
| CN205237109U (en) | Three -jaw chuck that can 6 tight work pieces of clamp | |
| CN208961525U (en) | A kind of wheel hub clamping and positioning device | |
| CN105414583A (en) | Floating clamping device | |
| CN201760769U (en) | Multidirectional eccentric wheel machining fixture | |
| CN203045333U (en) | Thin-wall bent pipe end surface processing clamp | |
| CN113600853B (en) | Machine tool clamping structure | |
| CN201442184U (en) | Porous fixture for lathe | |
| CN2378149Y (en) | Cam-screw combined mounting and clamping apparatus | |
| CN214488973U (en) | Frock clamp that mould processing milling machine was used | |
| CN213998612U (en) | Automatic pressing jig | |
| CN204639681U (en) | Pump housing fixture for processing | |
| CN208342337U (en) | The boring jig in two space intersection holes on a kind of processing profiled part | |
| CN210360464U (en) | Floating clamping jaw for clamping annular body | |
| CN2302074Y (en) | Soft jaw dismountable chuck with three holdfast | |
| CN201979316U (en) | Fixture | |
| CN113084270A (en) | Thin-wall gear ring machining clamp mechanism | |
| CN105312932A (en) | Clamp for drilling holes in round shafts | |
| CN205852304U (en) | A kind of pipe fitting processing tool | |
| CN215317032U (en) | Adjustable diameter type elliptic workpiece clamp | |
| CN219986868U (en) | Anti-interference flexible tool | |
| CN221087306U (en) | Universal clamp for driving wheel | |
| CN204524899U (en) | For the CNC milling machine fixture of the little inclined hole of processing belt platform sleeve | |
| CN219074477U (en) | Clamp for milling screw holes and peripheral molded surfaces of supporting piece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |