CN216730756U - Centering floating clamp - Google Patents
Centering floating clamp Download PDFInfo
- Publication number
- CN216730756U CN216730756U CN202220373822.4U CN202220373822U CN216730756U CN 216730756 U CN216730756 U CN 216730756U CN 202220373822 U CN202220373822 U CN 202220373822U CN 216730756 U CN216730756 U CN 216730756U
- Authority
- CN
- China
- Prior art keywords
- centering
- tensioning
- pull rod
- clamping jaws
- clamping jaw
- 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
- 238000003754 machining Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
Abstract
The utility model belongs to the technical field of clamp structures, and discloses a centering floating clamp which comprises a centering structure and a tensioning structure; the centering structure comprises a centering pull rod, the centering pull rod is connected with a plurality of circumferentially and uniformly distributed centering clamping jaws, and the centering pull rod is used for driving the centering clamping jaws to move in the radial direction; the tensioning structure comprises a tensioning pull rod, the tensioning pull rod is connected with a plurality of tensioning clamping jaws which are uniformly distributed in the circumferential direction, and the tensioning pull rod is used for driving the tensioning clamping jaws to move in the radial direction; the number of the centering clamping jaws and the number of the tensioning clamping jaws are more than or equal to 3. The technical scheme of this application has solved the hard centre gripping part of three-jaw chuck of prior art and has leaded to part atress to warp, machining precision low or the unstable problem of centre gripping.
Description
Technical Field
The utility model belongs to the technical field of clamp structures, and particularly relates to a centering floating clamp.
Background
The automobile gearbox comprises various types of internal gears, when the internal gears are machined, internal teeth need to be roughly machined, then the machining circle center of the gear is determined through the internal teeth, and two end faces and a center hole of the internal gear are machined.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a centering floating clamp to solve the problems of part stress deformation, low machining precision or unstable clamping caused by hard clamping of parts by a three-jaw chuck in the prior art.
In order to achieve the purpose, the utility model provides the following technical scheme:
the centering floating clamp comprises a centering structure and a tensioning structure; the centering structure comprises a centering pull rod, the centering pull rod is connected with a plurality of centering clamping jaws which are uniformly distributed in the circumferential direction, and the centering pull rod is used for driving the centering clamping jaws to move in the radial direction; the tensioning structure comprises a tensioning pull rod, the tensioning pull rod is connected with a plurality of tensioning clamping jaws which are uniformly distributed in the circumferential direction, and the tensioning pull rod is used for driving the tensioning clamping jaws to move in the radial direction; the number of the centering clamping jaws and the number of the tensioning clamping jaws are both more than or equal to 3.
The technical principle and the beneficial effects of the technical scheme are as follows: centering the gear through a centering clamping jaw and a centering pull rod, wherein the centering position is the tooth root of the internal gear, and the center of the tooth root circle is used for determining a machining center; the gear tooth tops of the inner gears are fastened and fixed through the tensioning pull rod and the tensioning clamping jaw; the number of the centering clamping jaws and the number of the tensioning clamping jaws are more than or equal to 3, so that the stability of the workpiece in the centering and tensioning processes is ensured; centering and fixing are achieved by the two clamping jaws respectively, the tensioning clamping jaw can improve tensioning force, the workpiece can not fall off in the machining process, even if the tooth top is deformed when tensioning is fixed, accurate centering of the centering clamping jaw cannot be influenced, machining precision of two end faces and a central hole in the machining process is guaranteed, and stressed deformation of the tooth top can be repaired in the subsequent finish machining process.
Further, the tensioning structure also comprises a guide piece and a star-shaped piece; the center of the star-shaped part is connected with the tensioning pull rod, the star-shaped part comprises a plurality of branches, and the number and the positions of the branches correspond to those of the tensioning clamping jaws; the guide piece is internally provided with an inclined through hole, the tensioning clamping jaw is positioned in the inclined through hole, and one end of the tensioning clamping jaw, which is positioned in the inclined through hole, is matched with the tail end spherical surface of the corresponding branch.
Has the advantages that: the oblique through hole of guide part leads the activity of tight clamping jaw that rises, the one end of tight clamping jaw that rises with the terminal of the branch of star passes through the sphere cooperation, and the tight clamping jaw that rises can be radially floated in the oblique through hole, and the orientation of the tight clamping jaw that rises is adjusted, increases the area of contact of tight clamping jaw and internal gear that rises, makes tight clamping jaw that rises closely laminate with the internal gear, guarantees that tight clamping jaw that rises can firmly the centre gripping work piece.
Further, the center of the star-shaped piece is in spherical fit with the tensioning pull rod.
Furthermore, a concave body is arranged at the center of the star-shaped piece, a convex body is arranged at one end of the tensioning pull rod, and the convex body is matched with the concave body through a spherical surface.
Has the advantages that: in the tensioning process, due to the difference between the tensioning clamping jaws, one tensioning clamping jaw is firstly contacted with the internal gear, so that the stress between the tensioning clamping jaws is uneven, the internal gear cannot be firmly fixed, or the internal gear is irreversibly deformed due to overlarge stress of the tensioning clamping jaw, and the subsequent processing of the internal gear is influenced; the star-shaped part is connected with the tensioning pull rod through the concave body and the convex body, so that floating deviation can occur between the star-shaped part and the tensioning pull rod, the tensioning clamping jaws can simultaneously apply tensioning force to the inner gear, the difference between the tensioning clamping jaws is effectively avoided, the uniform stress of the tensioning clamping jaws is ensured, and the stability of fixing the inner gear is improved.
Furthermore, a sliding groove is formed in the guide piece, and the centering clamping jaw is located in the sliding groove.
Has the beneficial effects that: the centering clamping jaw is positioned in the sliding groove, so that the movement between the centering clamping jaw and the tensioning clamping jaw is not influenced mutually, the centering accuracy of the centering clamping jaw is ensured, and meanwhile, the accuracy of machining end faces and a central hole is ensured.
Further, the centering pull rod is matched with the centering clamping jaw in an inclined way.
Has the advantages that: through the cooperation of the inclined planes, the centering clamping jaw is driven by the centering pull rod to move radially.
Further, an axial positioning rod is further arranged on the guide piece.
Has the advantages that: through the axial positioning rod, whether the inner gear is located at the position, to be tensioned, of the centering floating fixture is determined, the inner gear is initially positioned in the machining process, and subsequently, the inner gear can be quickly centered and fixed.
Further, a pressure sensor is arranged at the top end of the axial positioning rod.
Has the advantages that: and judging whether the inner gear is accurately positioned at the position to be fixed of the centering floating clamp or not through a pressure sensor.
Furthermore, the tensioning clamping jaw comprises a force application part, and the surface of the force application part is provided with grains.
Has the advantages that: the part of exerting oneself and the tight contact of internal gear rising, the part surface of exerting oneself sets up the line, can improve the frictional force between the part of exerting oneself and the internal gear, improves the stability in the internal gear course of working.
Furthermore, the centering pull rod is sleeved with the tensioning pull rod.
Has the advantages that: simplify transmission structure, guarantee that centering clamping jaw and tight clamping jaw atress are even.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a centering floating fixture according to the present invention;
FIG. 2 is a schematic view, partially in section, of an embodiment of the centering floating fixture of the present invention;
FIG. 3 is a schematic top view of an embodiment of the centering floating fixture of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises branches 1, concave bodies 2, convex bodies 3, a guide piece 4, an axial positioning rod 5, a centering pull rod 6, a tensioning pull rod 7, a tensioning clamping jaw 8, a sliding groove 9, a centering clamping jaw 10, a double-power adjustable oil cylinder 11 and a pressure sensor 12.
The embodiment is basically as shown in the attached figure 1: the centering floating clamp comprises a clamp body, wherein a guide part 4, a centering structure and a tensioning structure are arranged on the clamp body, the guide part 4 is of a disc shape, the centering structure comprises a centering pull rod 6, the centering pull rod is connected with a plurality of centering clamping jaws 10 which are uniformly distributed along the center circumference of the guide part 4, the tensioning structure comprises a tensioning pull rod 7, and a plurality of tensioning clamping jaws 8 which are uniformly distributed along the circumference are connected on the tensioning pull rod 7; the centering clamping jaw 10 is detachably connected with the centering pull rod 6; the centering pull rod and the tensioning pull rod are coaxially sleeved, and the double-power adjustable oil cylinder 11 is adopted in the utility model; the double-power adjustable oil cylinder 11 comprises a large pressure pull rod and a small pressure pull rod; the small pressure pull rod is a centering pull rod 6, the large pressure pull rod is a tensioning pull rod 7, and the number of the centering clamping jaws and the number of the tensioning clamping jaws are both more than or equal to 3.
The centering pull rod 6 is connected with the centering clamping jaw 10 in a sliding mode through an inclined plane, and the centering pull rod 6 is matched with the inclined plane between the centering clamping jaws 10 to convert the axial movement of the centering pull rod into the radial movement of the centering clamping jaw 10; the width of the centering clamping jaw 10 is smaller than the width of a tooth space of an internal gear to be fixed; in this embodiment, the number of the centering jaws 10 is 3, but may be other numbers in other embodiments of the present application; when the centering pull rod 6 pushes upwards, the inclined plane pushes the centering clamping jaw 10 to move outwards, and when the centering pull rod 6 pulls downwards, the inclined plane pulls the centering clamping jaw 10 to move inwards.
The tensioning clamping jaw 8 is detachably connected with the tensioning pull rod 7; the width that rises clamping jaw 8 is greater than centering clamping jaw 10, in this embodiment, the quantity that rises clamping jaw 8 is 3, rise clamping jaw 8 includes in proper order and forces portion and connecting portion, it is equipped with the line to exert oneself the portion surface, in this embodiment, the line is the zigzag, in other embodiments of this application, the line can be according to actual demand setting, and the material of the portion of exerting oneself is preferably tungsten steel.
As shown in the attached drawing 2, the tensioning structure further comprises a star-shaped member, a convex body 3 and a concave body 2, wherein a first through hole is formed in the center of the convex body 3 and is fixedly connected with a tensioning pull rod 7; the convex body 3 is matched with the concave body 2 through a spherical surface; a second through hole is formed in the center of the star-shaped part, and the concave surface body 2 is fixed in the second through hole; the star-shaped part comprises a plurality of branches 1, the position distribution and the number of the branches 1 correspond to the position and the number of the tensioning clamping jaws 8, in this embodiment, the number of the branches is 3, and the 3 branches are uniformly distributed in the circumferential direction; the guide piece 4 is evenly provided with inclined through holes, the tensioning clamping jaws 8 are located in the inclined through holes, and the connecting portions of the tensioning clamping jaws 8 are in spherical fit with the tail ends of the branches corresponding to the star-shaped pieces through spherical joints.
The side of the guide part 4 is also evenly provided with a sliding groove 9, and the centering clamping jaw 10 is positioned in the sliding groove 9, so that the guide part 4 is prevented from influencing the centering clamping jaw 10 in the moving process.
As shown in fig. 3, an axial positioning rod 5 is further arranged on the guide member 4, and a pressure sensor 12 is further arranged at the top end of the axial positioning rod 5; in this embodiment, the number of the positioning rods is 3, and the model of the pressure sensor 12 is preferably an HPT509 thin single-point pressure sensor 12.
The specific implementation process is as follows:
the internal gear is preliminarily positioned through the positioning rod, when the pressure sensor 12 of each positioning column detects a pressure value, the internal gear is shown to be located at an accurate positioning position, the positioning pull rod is moved, and the positioning pull rod pushes the centering clamping jaw 10 outwards through the inclined surface until the positioning clamping jaw smoothly centers the internal gear. The tensioning pull rod 7 is pulled, the star-shaped piece is pulled to move downwards by the tensioning pull rod 7, the tensioning clamping jaw 8 and the guide piece 4 move downwards along with the star-shaped piece, the guide piece 4 limits the position of the tensioning clamping jaw 8, the tensioning clamping jaw 8 moves downwards to realize tensioning of the internal gear, and in the tensioning process, the tensioning clamping jaw 8 is in contact with the spherical surface of the star-shaped piece, the tensioning clamping jaw 8 floats, the orientation of the tensioning clamping jaw 8 is automatically adjusted, and the tensioning clamping jaw 8 is tightly attached to the internal gear; through the spherical surface cooperation between the star-shaped part and the tensioning pull rod 7, the star-shaped part floats, so that each tensioning clamping jaw 8 is uniformly stressed.
It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the utility model, and these changes and modifications should not be construed as affecting the performance of the utility model and its practical application.
Claims (10)
1. Centering anchor clamps that float, its characterized in that: comprises a centering structure and a tensioning structure; the centering structure comprises a centering pull rod, the centering pull rod is connected with a plurality of uniformly distributed centering clamping jaws, and the centering pull rod is used for driving the centering clamping jaws to move outwards; the tensioning structure comprises a tensioning pull rod, the tensioning pull rod is connected with a plurality of tensioning clamping jaws which are uniformly distributed, and the tensioning pull rod is used for driving the tensioning clamping jaws to move outwards; the number of the centering clamping jaws and the number of the tensioning clamping jaws are both more than or equal to 3.
2. The centering and floating clamp according to claim 1, wherein: the tensioning structure further comprises a guide piece and a star-shaped piece; the center of the star-shaped part is connected with the tensioning pull rod, the star-shaped part comprises a plurality of branches, and the number and the positions of the branches correspond to those of the tensioning clamping jaws; the guide piece is internally provided with an inclined through hole, the tensioning clamping jaw is positioned in the inclined through hole, and one end of the tensioning clamping jaw, which is positioned in the inclined through hole, is matched with the tail end spherical surface of the corresponding branch.
3. The centering and floating clamp according to claim 2, wherein: the center of the star-shaped piece is matched with the spherical surface of the tensioning pull rod.
4. The centering and floating clamp according to claim 2, wherein: the center of the star-shaped piece is provided with a concave body, one end of the tensioning pull rod is provided with a convex body, and the convex body is matched with the concave body through a spherical surface.
5. The centering and floating clamp according to claim 2, wherein: the guide piece is further provided with a sliding groove, and the centering clamping jaw is located in the sliding groove.
6. The centering and floating clamp according to claim 1, wherein: the centering pull rod is matched with the centering clamping jaw in an inclined plane.
7. The centering and floating clamp according to claim 2, wherein: and the guide piece is also provided with an axial positioning rod.
8. The centering and floating clamp according to claim 7, wherein: and a pressure sensor is arranged at the top end of the axial positioning rod.
9. The centering and floating clamp according to claim 1, wherein: the tensioning clamping jaw comprises a force application part, and the surface of the force application part is provided with grains.
10. The centering and floating clamp according to claim 1, wherein: the centering pull rod is sleeved with the tensioning pull rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220373822.4U CN216730756U (en) | 2022-02-23 | 2022-02-23 | Centering floating clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220373822.4U CN216730756U (en) | 2022-02-23 | 2022-02-23 | Centering floating clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216730756U true CN216730756U (en) | 2022-06-14 |
Family
ID=81920418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220373822.4U Active CN216730756U (en) | 2022-02-23 | 2022-02-23 | Centering floating clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216730756U (en) |
-
2022
- 2022-02-23 CN CN202220373822.4U patent/CN216730756U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109822123B (en) | Clamping method, clamp and machining device for turning thin-wall cylindrical part | |
| CN202622381U (en) | Semi-automatic clamper | |
| CN209774104U (en) | Clamping device for turning three-petal graphite crucible | |
| CN216730756U (en) | Centering floating clamp | |
| CN110695732A (en) | Automatic centering clamp for large annular thin-wall part | |
| CN110625201A (en) | Shaft gear shaping clamp | |
| CN110625200A (en) | Disc gear shaping clamp | |
| CN216524727U (en) | Test device for manufacturing tooth space coefficient | |
| CN216990209U (en) | Gear clamping device | |
| CN115673436A (en) | Self-centering clamp structure for gear honing processing of disc parts | |
| CN215144817U (en) | Automatic lathe machining clamp for thin-wall part | |
| CN212240194U (en) | Thin wall casing damping clamping device with adjustable | |
| CN201279604Y (en) | High-precision soft-claw chucking structure for processing thin-wall vehicle | |
| CN204818130U (en) | Anchor clamps of turning terminal surface | |
| CN211661608U (en) | Automatic clamp for finish machining of cylinder sleeve | |
| CN112059674A (en) | Adjustable thin-wall shell vibration damping clamping device and operation method | |
| CN217045505U (en) | Three way connection car adds clamping apparatus | |
| CN211276808U (en) | Shaft gear shaping clamp | |
| CN220112809U (en) | Clamp for step valve machining | |
| CN218575177U (en) | Self-centering clamp structure for gear honing processing of disc parts | |
| CN214602331U (en) | Reducing internal spline gear shaping clamp | |
| CN109759875B (en) | Finish turning clamp for cold extrusion gear shaft | |
| CN215469660U (en) | Steel anchor clamp | |
| CN219322245U (en) | Rotor core clamp | |
| CN212665099U (en) | Shaft gear grinding clamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 401121 No.1, East Section of Tianshan Avenue, Yubei District, Chongqing Patentee after: Chongqing Yujiang Die Casting Co.,Ltd. Address before: 401121 Dazhulin Town, northern New Area, Chongqing Patentee before: CHONGQING YUJIANG DIE-CASTING Co.,Ltd. |
|
| CP03 | Change of name, title or address |