CN215033738U - Three-jaw chuck for clamping double-top self-centering special-shaped part - Google Patents
Three-jaw chuck for clamping double-top self-centering special-shaped part Download PDFInfo
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- CN215033738U CN215033738U CN202120768672.2U CN202120768672U CN215033738U CN 215033738 U CN215033738 U CN 215033738U CN 202120768672 U CN202120768672 U CN 202120768672U CN 215033738 U CN215033738 U CN 215033738U
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Abstract
The utility model relates to the technical field of machining, a three-jaw chuck of centre gripping double tops self-centering special-shaped parts is proposed, including disk body and at least three jack catch, the jack catch includes adjusting block, flexonics spare and work piece, the adjusting block articulate in on the disk body, flexonics spare locates on the adjusting block, the work piece is located on the flexonics spare. Through the technical scheme, the problems that the chuck in the prior art wastes time and labor when clamping a special-shaped workpiece and is low in installation power are solved.
Description
Technical Field
The utility model relates to the technical field of machining, it is specific, relate to a three-jaw chuck of centre gripping double tops self-centering special-shaped part.
Background
Chucks are mechanical devices used to clamp workpieces on machine tools. The machine tool accessory clamps and positions a workpiece by utilizing the radial movement of movable clamping jaws uniformly distributed on a chuck body. The chuck generally comprises a chuck body, movable jaws and a jaw driving mechanism 3. Chucks are commonly used in lathes, cylindrical grinders and internal grinders, and may also be used in conjunction with various indexing devices for milling and drilling machines.
The clamping of the chuck on the workpiece is mainly realized by acting the movable clamping jaws on the surface of the workpiece, so that the movable clamping jaws play a vital role in the clamping effect of the chuck;
the chuck is mainly used for clamping a cylindrical workpiece, a tip is used for improving the coaxiality of the workpiece and reducing circular runout of the workpiece during rotation, a concave pit matched with the taper of the tip is prefabricated on the end face of the workpiece, one end of the workpiece is clamped by the chuck, and the other end of the workpiece is propped by the tip, so that the workpiece is more stable during rotation;
the drive form of activity jack catch is mostly to screw in or screw out a bevel pinion through the spanner, it is rotatory to drive another big bevel gear, the back of activity jack catch have with big bevel gear complex plane screw thread, big bevel gear is rotatory alright control several slip jack catches be close to simultaneously or keep away from the center, when the circle profile unevenness of tight dysmorphism work piece (cylinder work piece cross section) of clamp need, traditional chuck can't realize stable, quick clamping, waste time and energy, work efficiency is low, install low power. Aiming at the problems, the prior art does not well solve the problems, and brings troubles to the normal operation of the work in the field.
SUMMERY OF THE UTILITY MODEL
The utility model provides a three-jaw chuck of two top self-centering special-shaped parts of centre gripping has solved the chuck clamping special-shaped parts among the correlation technique and has wasted time and energy, installs the problem that the installation power is low.
The technical scheme of the utility model as follows: the utility model provides a three-jaw chuck of two top self-centering special-shaped parts of centre gripping, includes disk body and at least three jack catch, the jack catch includes adjusting block, flexonics spare and work piece, the adjusting block articulate in on the disk body, flexonics spare is located on the adjusting block, the work piece is located on the flexonics spare.
As a further technical scheme, the tray body further comprises a lever, the lever is hinged to the tray body, one end of the lever is connected with the adjusting block, the other end of the lever is provided with a first conical surface, a control body is arranged in the tray body in a sliding mode, the control body is provided with a second conical surface, and the first conical surface is in friction fit with the second conical surface.
As a further technical scheme, a return spring is arranged on the disc body and connected with the lever.
As a further technical scheme, the device also comprises a pull rod, wherein the pull rod is arranged in the disc body in a sliding manner, and the pull rod is connected with the control body.
As a further technical scheme, the pull rod is provided with an installation section, a bearing is sleeved on the installation section, and the bearing is sleeved with the control body.
As a further technical scheme, the end part of the installation section is provided with a baffle, and the end face of the baffle is attached to the end face of the bearing.
As a further technical scheme, the center of the end face of the disk body is provided with a tip.
As a further technical scheme, the novel desk further comprises a positioning pin, and the lever is hinged to the tray body through the positioning pin.
As a further technical scheme, the flexible connecting piece is a disc spring.
The utility model discloses a theory of operation does: the chuck comprises a chuck body and at least three clamping jaws, each clamping jaw comprises an adjusting block, a flexible connecting piece and a working block, the adjusting blocks are hinged to the chuck body, the flexible connecting pieces are arranged on the adjusting blocks, the working blocks are arranged on the flexible connecting pieces, and the working blocks can swing relative to the adjusting blocks by means of the flexible connecting pieces;
when the workpiece clamping device works, a workpiece is placed between the clamping jaws, the adjusting blocks rotate according to the diameter or size of the workpiece until the working blocks are all in contact with the workpiece, the working blocks can independently swing through the flexible connecting pieces, and different swing angles are generated by the working blocks according to different contact surfaces of the working blocks and the workpiece respectively, so that the contact surfaces of the working blocks are adapted to ensure that the working blocks and the workpiece have the maximum contact area.
The utility model discloses improve the jack catch, set up flexible connectors between work piece and adjusting block, a plurality of work pieces can independently swing for the adjusting block separately with the help of flexible connectors, come the contact surface that adaptation and work piece are different, waste time and energy when having solved traditional chuck clamping dysmorphism work piece, install the problem that the installation power is low.
The utility model has the advantages that: in actual production, the requirement on the processing precision of a cylindrical section of a plurality of cylindrical workpieces clamped by a chuck is not high, the cross sections of the cylindrical workpieces are not very standard circles in fact, and are in abnormal profiles in more cases, when the conventional chuck clamps the special-shaped workpieces, because clamping jaws of the conventional chuck are in rigid fixed connection, the contact between individual clamping jaws and the workpieces is not very sufficient, when the clamping is unqualified, the workpieces rotate to have very large circle runout, the workpieces cannot work normally, the clamping needs to be adjusted by multiple times of attempts, so that a relatively stable clamping angle is obtained, time and labor are wasted, and the mounting power is lower; the utility model provides a work piece realizes independent swing with the help of flexonics spare, to the work piece of special-shaped profile, self inclination can be adjusted to several work pieces, comes the different contact surface of adaptation, guarantees that work piece and work piece have great area of contact, has reduced the installation degree of difficulty, has improved the installation success rate.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a perspective view of the chuck of the present invention;
FIG. 2 is a view showing the internal structure of the chuck according to the present invention;
in the figure: 1. the device comprises a disc body, 2, an adjusting block, 4, a working block, 5, a lever, 6, a first conical surface, 7, a control body, 8, a second conical surface, 9, a return spring, 10, a pull rod, 11, a mounting section, 12, a bearing, 13, a baffle, 14, a tip, 15, a positioning pin, 16 and a disc spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work, are related to the scope of the present invention.
As shown in fig. 1-2, the present embodiment provides a three-jaw chuck for clamping a double-top self-centering special-shaped part, which includes a chuck body 1 and at least three jaws, wherein the jaws include an adjusting block 2, a flexible connecting member and a working block 4, the adjusting block 2 is hinged on the chuck body 1, the flexible connecting member is arranged on the adjusting block 2, and the working block 4 is arranged on the flexible connecting member.
In this embodiment, the specific structure of the chuck is as follows: the chuck comprises a chuck body 1 and at least three clamping jaws, each clamping jaw comprises an adjusting block 2, a flexible connecting piece and a working block 4, the adjusting blocks 2 are hinged to the chuck body 1, the flexible connecting pieces are arranged on the adjusting blocks 2, the working blocks 4 are arranged on the flexible connecting pieces, and the working blocks 4 can swing relative to the adjusting blocks 2 through the flexible connecting pieces;
when the workpiece clamping device works, a workpiece is placed between the clamping jaws, the adjusting blocks 2 rotate according to the diameter or size of the workpiece until the working blocks 4 are in contact with the workpiece, the working blocks 4 can independently swing respectively by virtue of the flexible connecting piece, and different swing angles are generated by the working blocks 4 according to different contact surfaces of the working blocks 4 with the workpiece respectively so as to be adapted to the contact surfaces of the working blocks and ensure that the working blocks 4 have the maximum contact area with the workpiece.
In this embodiment, set up flexible connectors between work piece 4 and adjusting block 2, a plurality of work pieces 4 can independently swing for adjusting block 2 separately with the help of flexible connectors, come the different contact surface of adaptation and work piece, it wastes time and energy to have solved when traditional chuck clamping dysmorphism work piece, installs the problem that the power is low.
In actual production, the requirement on the processing precision of a cylindrical section of a plurality of cylindrical workpieces clamped by a chuck is not high, the cross sections of the cylindrical workpieces are not very standard circles in fact, and are in abnormal profiles in more cases, when the conventional chuck clamps the special-shaped workpieces, because clamping jaws of the conventional chuck are in rigid fixed connection, the contact between individual clamping jaws and the workpieces is not very sufficient, when the clamping is unqualified, the workpieces rotate to have very large circle runout, the workpieces cannot work normally, the clamping needs to be adjusted by multiple times of attempts, so that a relatively stable clamping angle is obtained, time and labor are wasted, and the mounting power is lower; the utility model provides a work piece 4 realizes independent swing with the help of flexible connectors, and to the work piece of dysmorphism profile, self inclination can be adjusted to several work pieces 4, comes the different contact surface of adaptation, guarantees that work piece 4 has great area of contact with the work piece, has reduced the installation degree of difficulty, has improved the installation success rate.
As shown in fig. 1 to 2, further, it includes,
the adjustable tray is characterized by further comprising a lever 5, the lever 5 is hinged to the tray body 1, one end of the lever 5 is connected with the adjusting block 2, the other end of the lever is provided with a first conical surface 6, a control body 7 is arranged in the tray body 1 in a sliding mode, a second conical surface 8 is arranged on the control body 7, and the first conical surface 6 is in friction fit with the second conical surface 8.
In this embodiment, still include lever 5, lever 5 articulates on disk body 1, lever 5 one end is connected with adjusting block 2, the other end has first conical surface 6, it is equipped with control body 7 to slide in the disk body 1, be equipped with second conical surface 8 on the control body 7, first conical surface 6 and second conical surface 8 friction fit, when the clamping work piece, control body 7 slides, when control body 7 slides to keeping away from the work piece direction, first conical surface 6 of second conical surface 8 friction, the one end that has first conical surface 6 with lever 5 pushes outward to the chuck, lever 5 just removes to the chuck center with the one end that adjusting block 2 is connected, make the jack catch can the clamping diameter work piece that is littleer.
As shown in fig. 2, further, it also includes,
a return spring 9 is arranged on the tray body 1, and the return spring 9 is connected with the lever 5.
In this embodiment, the disc body 1 is provided with the return spring 9, the return spring 9 is connected with the lever 5, when the lever 5 is pushed outward by the control body 7 to the chuck, the lever 5 compresses the return spring 9, when the control body 7 slides in a direction close to a workpiece, the return spring 9 pushes the lever 5 back to the original position by utilizing the elastic potential energy of self compression, and the automatic control of the chuck is realized by matching the control body 7.
As shown in fig. 2, further, it also includes,
the novel tray is characterized by further comprising a pull rod 10, wherein the pull rod 10 is slidably arranged in the tray body 1, and the pull rod 10 is connected with the control body 7.
In this embodiment, still include pull rod 10, pull rod 10 slides and locates in the disk body 1, and pull rod 10 is connected with control body 7, drives control body 7 with dragging and pulling pull rod 10, and pull rod 10 can stretch out the chuck, and convenient and fast, power can be connected to pull rod 10 tip, realizes automatic control.
As shown in fig. 2, further, it also includes,
the pull rod 10 is provided with an installation section 11, the installation section 11 is sleeved with a bearing 12, and the bearing 12 is sleeved with the control body 7.
In this embodiment, be equipped with installation section 11 on the pull rod 10, the cover is equipped with bearing 12 on the installation section 11, bearing 12 overcoat is equipped with the control body 7, at the during operation, the chuck is high-speed rotatory, lever 5 synchronous revolution, the inseparable chucking of second conical surface 6 on the first conical surface 6 on the lever 5 and the control body 7, so the control body 7 is also synchronous revolution, installation section 11 can keep the irrotational with the help of bearing 12 this moment, make the 10 tip of pull rod can connect more unsuitable high-speed rotatory drive forms, such as hydraulic pressure, pneumatics or electronic etc..
As shown in fig. 2, further, it also includes,
the end part of the mounting section 11 is provided with a baffle 13, and the end surface of the baffle 13 is attached to the end surface of the bearing 12.
In this embodiment, the end of the mounting section 11 is provided with a baffle 13, and the end face of the baffle 13 is attached to the end face of the bearing 12, so as to prevent the bearing 12 from falling off due to frequent movement of the pull rod 10.
As shown in fig. 1 to 2, further, it includes,
the center of the end surface of the disk body 1 is provided with a tip 14.
In the embodiment, the center of the end face of the disc body 1 is provided with the center 14, the workpiece can be prefabricated with a conical pit matched with the taper of the center 14 on the end face before clamping, one end of the workpiece is propped against by the center 14 during clamping, the other end of the workpiece is propped against by a fixed center on a tailstock of a machine tool, the front and back coaxiality of the workpiece is improved, the workpiece is clamped by the clamping jaw and matched with the clamping jaw, and the workpiece is clamped by two modes of propping and clamping so as to ensure that the workpiece is more stable during rotation.
As shown in fig. 1 to 2, further, it includes,
the tray body 1 further comprises a positioning pin 15, and the lever 5 is hinged on the tray body 1 through the positioning pin 15.
In the embodiment, the lever 5 is hinged on the disc body 1 by the positioning pin 15, the lever 5 can bear the torque when clamping a workpiece, and the positioning pin 15 has high strength and reliable and stable structure.
As shown in fig. 2, further, it also includes,
the flexible connection is a disc spring 16.
In this embodiment, the flexible connecting member is a disc spring 16, the working block 4 independently swings with the help of the disc spring 16, the load borne by the disc spring 16 is large, and the disc spring is convenient to replace and very suitable for the use situation of a machine tool.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a three-jaw chuck of two top self-centering special-shaped parts of centre gripping, includes disk body (1) and at least three jack catch, its characterized in that, the jack catch includes adjusting block (2), flexonics spare and work piece (4), adjusting block (2) articulate in on the disk body (1), flexonics spare is located on adjusting block (2), work piece (4) are located on the flexonics spare.
2. The three-jaw chuck for clamping the double-ejection self-centering special-shaped part as claimed in claim 1, further comprising a lever (5), wherein the lever (5) is hinged on the disk body (1), one end of the lever (5) is connected with the adjusting block (2), the other end of the lever is provided with a first conical surface (6), a control body (7) is arranged in the disk body (1) in a sliding manner, a second conical surface (8) is arranged on the control body (7), and the first conical surface (6) is in friction fit with the second conical surface (8).
3. The three-jaw chuck for holding double-top self-centering special-shaped parts as claimed in claim 2, characterized in that a return spring (9) is arranged on the chuck body (1), and the return spring (9) is connected with the lever (5).
4. The three-jaw chuck for holding double-ejection self-centering special-shaped parts according to claim 2, further comprising a pull rod (10), wherein the pull rod (10) is slidably arranged in the chuck body (1), and the pull rod (10) is connected with the control body (7).
5. The three-jaw chuck for holding double-ejection self-centering special-shaped parts according to claim 4, characterized in that the pull rod (10) is provided with a mounting section (11), the mounting section (11) is sleeved with a bearing (12), and the bearing (12) is sleeved with the control body (7).
6. The three-jaw chuck for clamping the double-ejection self-centering special-shaped part according to the claim 5 is characterized in that a baffle (13) is arranged at the end part of the mounting section (11), and the end surface of the baffle (13) is attached to the end surface of the bearing (12).
7. The three-jaw chuck for holding double-ejection self-centering special-shaped parts as claimed in claim 1, wherein the center of the end face of the chuck body (1) is provided with an ejection tip (14).
8. Three-jaw chuck for holding double-topped self-centering profile parts according to claim 2, further comprising a positioning pin (15), wherein said lever (5) is hinged to said plate (1) by means of said positioning pin (15).
9. Three-jaw chuck for holding double-topped self-centering profile parts according to claim 1, characterized in that said flexible connecting member is a disc spring (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120768672.2U CN215033738U (en) | 2021-04-15 | 2021-04-15 | Three-jaw chuck for clamping double-top self-centering special-shaped part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120768672.2U CN215033738U (en) | 2021-04-15 | 2021-04-15 | Three-jaw chuck for clamping double-top self-centering special-shaped part |
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| Publication Number | Publication Date |
|---|---|
| CN215033738U true CN215033738U (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120768672.2U Active CN215033738U (en) | 2021-04-15 | 2021-04-15 | Three-jaw chuck for clamping double-top self-centering special-shaped part |
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| CN (1) | CN215033738U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193284A (en) * | 2021-12-20 | 2022-03-18 | 北平机床(浙江)股份有限公司 | Screw tap clamping device |
-
2021
- 2021-04-15 CN CN202120768672.2U patent/CN215033738U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193284A (en) * | 2021-12-20 | 2022-03-18 | 北平机床(浙江)股份有限公司 | Screw tap clamping device |
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