CN216801742U - Double-power clamping mechanism for sleeping car - Google Patents
Double-power clamping mechanism for sleeping car Download PDFInfo
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- CN216801742U CN216801742U CN202220046959.9U CN202220046959U CN216801742U CN 216801742 U CN216801742 U CN 216801742U CN 202220046959 U CN202220046959 U CN 202220046959U CN 216801742 U CN216801742 U CN 216801742U
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Abstract
The utility model discloses a double-power clamping mechanism for a sleeping car, which comprises: the chuck is used for clamping the outer diameter of the workpiece; the core expanding mechanism is positioned in the chuck and used for expanding the spline grooves of the workpiece; the axial positioning block is fixed on the chuck and used for determining the axial position of a workpiece; the center is used for tightly pushing the workpiece on the axial positioning block; the double-power mechanism is fixedly provided with a first pull rod and a second pull rod, the first pull rod is used for driving the chuck to move, and the second pull rod is used for driving the core expanding mechanism to move; the chuck, the double power mechanisms and the tip are arranged on the frame. The center expanding mechanism can expand the spline groove of the workpiece, so that the reference of the center expanding mechanism is the spline groove of the workpiece when the workpiece is fixed in the radial direction, the error of the workpiece accumulated in the spline groove position when the workpiece is fixed is avoided, and the position accuracy of the spline groove is improved.
Description
Technical Field
The utility model relates to a clamping mechanism, in particular to a double-power clamping mechanism for a sleeping car.
Background
The workpiece needs to be fixed by a clamp firstly when being processed on a lathe, the workpiece needs to be subjected to finish machining on the lathe after heat treatment so as to ensure the precision of the part, generally, the radial fixation of the workpiece is realized by clamping the outer diameter or the tensioning inner diameter of the clamp, so that the structure of the clamp is relatively simple, and the operation is convenient. However, there is a certain limitation in the radial direction of the workpiece to be fixed, the clamping outer diameter or the tensioning inner diameter can only use the outer circle diameter and the inner yard diameter of the workpiece as a reference, and because the positions of the structures such as the groove and the hole on the workpiece have a certain error relative to the outer circle diameter and the inner yard diameter of the workpiece, the position accuracy of the groove and the hole on the workpiece is difficult to control due to accumulated errors, and when the position accuracy of the groove and the hole on the workpiece has a high requirement, the radial direction of the workpiece to be fixed by the clamping outer diameter or the tensioning inner diameter is difficult to meet the accuracy requirement.
SUMMERY OF THE UTILITY MODEL
The utility model provides a double-power clamping mechanism for a sleeping car, which fixes the radial direction of a workpiece by tensioning the spline groove of the workpiece, so that the error accumulated in the spline groove position when the workpiece is fixed is avoided, and the position precision of the spline groove is improved.
The technical scheme of the utility model is as follows:
a double-power clamping mechanism for a sleeping car comprises:
the chuck is used for clamping the outer diameter of the workpiece;
the core expanding mechanism is positioned in the chuck and used for expanding the spline grooves of the workpiece;
the axial positioning block is fixed on the chuck and used for determining the axial position of the workpiece;
the centre is used for tightly propping the workpiece on the axial positioning block;
the double-power mechanism is fixedly provided with a first pull rod and a second pull rod, the first pull rod is used for driving the chuck to move, and the second pull rod is used for driving the core expanding mechanism to move;
the chuck, the double-power mechanism and the tip are arranged on the frame.
The double-power clamping mechanism for the sleeping car is characterized in that the center expanding mechanism is used for expanding a spline groove of a workpiece, the chuck is used for clamping the outer diameter of the workpiece, and the center is used for tightly pushing the workpiece on the axial positioning block, so that the workpiece is fixed. The core expanding mechanism can expand the spline groove of the workpiece, so that the reference of the core expanding mechanism is the spline groove of the workpiece when the workpiece is fixed in the radial direction, the error of the workpiece accumulated in the position of the spline groove when the workpiece is fixed is avoided, and the position precision of the spline groove is improved.
Preferably, the core expanding mechanism includes: the base, the connecting rod, screw and the spring that rises, the base is fixed on the chuck, and the connecting rod is worn to establish in the base, and the connecting rod is connected with the second pull rod, and the fix with screw is on the connecting rod, and the spring cooperation that rises is on the base, and the spring that rises is the conical surface with the contact surface of base, and the screw is used for the extrusion spring that rises. When the spline grooves of the workpiece need to be tensioned, the second pull rod moves to drive the connecting rod and the screw, so that the screw extrudes the tension spring, and the radial dimension of the tension spring is gradually enlarged due to the fact that the contact surface of the tension spring and the base is a conical surface, so that the spline grooves of the workpiece are tensioned.
Preferably, the taper of the contact surface between the expansion spring and the base is 0.08 to 0.1. The taper of the contact surface of the expansion spring and the base is a proper value, if the taper is too large, the radial size of the expansion spring in unit displacement of the expansion spring is increased by too large a value, and the process of the expansion spring for expanding the spline groove of the workpiece is difficult to control; if the taper is too small, the displacement required by the spline grooves of the expanding spring tensioning workpiece is too large, and the production efficiency is reduced.
Preferably, the expansion spring is provided with 6 openings which are uniformly distributed on the circumference of the expansion spring. The radial dimension change range of the complete circumferential part is limited, so that 6 openings are formed in the expansion spring, the structural elasticity of the expansion spring can be increased, the radial dimension change range of the expansion spring is increased, and the expansion spring is favorable for expanding the spline grooves of the workpiece.
Preferably, the 6 openings are divided into two groups, the two groups of openings face oppositely, and the two groups of openings are arranged on the expansion spring in a staggered mode. The circumferences of the two ends of the expanding spring are damaged, so that the structural elasticity of the expanding spring is further increased, the radial size change range of the expanding spring is increased, and the expanding spring is favorable for expanding the spline grooves of the workpiece.
Preferably, a fixing notch is formed in the expansion spring, an anti-rotation screw is fixed on the base, and the anti-rotation screw is matched in the fixing notch. So the spring that rises can not rotate when processing the work piece, guarantees the unable rotation of work piece through spline groove effect, is favorable to increasing the machining precision of work piece.
Preferably, the tension spring is made of 65 Mn. 65Mn has high strength and certain flexibility, and is suitable for manufacturing the expanding spring.
Preferably, a detection gas circuit is arranged in the axial positioning block, one end of the detection gas circuit leads to the working surface of the axial positioning block, and the other end of the detection gas circuit is connected with a gas source. When the double-power clamping mechanism for the sleeping car works, gas is input into the detection gas circuit from the gas source and flows out of the working face of the axial positioning block, when a workpiece is tightly propped on the axial positioning block, the outlet of the detection gas circuit is sealed, whether axial positioning of the workpiece is completed or not can be judged by measuring the gas pressure in the detection gas circuit, and automatic workpiece fixing is facilitated.
The utility model has the beneficial effects that: the expansion core mechanism can expand the spline groove of the workpiece, so that the reference of the expansion core mechanism is the spline groove of the workpiece when the workpiece is fixed in the radial direction, the error of the workpiece accumulated in the position of the spline groove when the workpiece is fixed is avoided, and the improvement of the position precision of the spline groove is facilitated.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the expanding spring of the present invention.
Fig. 3 is a cross-sectional view taken along the plane a-a in fig. 2.
Fig. 4 is a left side view of the expansion spring of the present invention.
Fig. 5 is a rear view of the expansion spring of the present invention.
In the figure:
a chuck 1;
the core expanding mechanism 2, the base 2.1, the connecting rod 2.2, the screw 2.3, the expanding spring 2.4, the opening 2.41, the fixing gap 2.42 and the anti-rotation screw 2.5;
an axial positioning block 3, and a detection gas circuit 3.1;
a tip 4;
a double-power mechanism 5;
a first pull rod 6;
a second pull rod 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the utility model will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the utility model have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the utility model may be practiced, but it is understood that the scope of the embodiments of the utility model is not limited thereby. On the contrary, the embodiments of the utility model include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections, either mechanical or electrical, or communicating with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in fig. 1 to 5, a dual power clamping mechanism for a sleeping car includes:
the chuck 1 is used for clamping the outer diameter of a workpiece;
the core expanding mechanism 2 is positioned in the chuck 1 and used for expanding the spline grooves of the workpiece;
the axial positioning block 3 is fixed on the chuck 1, and the axial positioning block 3 is used for determining the axial position of a workpiece;
the centre 4 is used for tightly propping the workpiece on the axial positioning block 3;
the double-power mechanism 5 is characterized in that a first pull rod 6 and a second pull rod 7 are fixed on the double-power mechanism 5, the first pull rod 6 is used for driving the chuck 1 to move, and the second pull rod 7 is used for driving the core expanding mechanism 2 to move;
the chuck 1, the double-power mechanism 5 and the tip 4 are arranged on the frame.
In the double-power clamping mechanism for the sleeping carriage, the core expanding mechanism 2 expands the spline groove of the workpiece, the chuck 1 clamps the outer diameter of the workpiece, and the tip 4 tightly pushes the workpiece against the axial positioning block 3, so that the workpiece is fixed. The core expanding mechanism 2 can expand the spline groove of the workpiece, so that the reference of the core expanding mechanism is the spline groove of the workpiece when the workpiece is fixed in the radial direction, the error of the workpiece accumulated in the spline groove position when the workpiece is fixed is avoided, and the improvement of the position precision of the spline groove is facilitated.
In this embodiment, the chuck 1 is a lever compensation type chuck, and when the radial direction of the fixed workpiece is used, the core expanding mechanism 2 firstly expands the spline grooves of the workpiece, and then the chuck 1 clamps the outer diameter of the workpiece.
Further, the core expanding mechanism 2 includes: base 2.1, connecting rod 2.2, screw 2.3 and the spring 2.4 that rises, base 2.1 is fixed on chuck 1, and connecting rod 2.2 wears to establish in base 2.1, and connecting rod 2.2 is connected with second pull rod 7, and screw 2.3 is fixed on connecting rod 2.2, and the spring 2.4 cooperation that rises is on base 2.1, and the contact surface that rises spring 2.4 and base 2.1 is the conical surface, and screw 2.3 is used for the extrusion to rise spring 2.4. When the spline grooves of the workpiece need to be tensioned, the second pull rod 7 moves to drive the connecting rod 2.2 and the screw 2.3, so that the screw 2.3 extrudes the tension spring 2.4, and as the contact surface between the tension spring 2.4 and the base 2.1 is a conical surface, the radial dimension of the tension spring 2.4 is gradually enlarged, so that the spline grooves of the workpiece are tensioned. It will be appreciated that the outer periphery of the tension spring 2.4 is provided with splines which match the shape of the spline grooves of the workpiece.
Furthermore, the taper of the contact surface of the expansion spring 2.4 and the base 2.1 is 0.08-0.1. The taper of the contact surface of the tension spring 2.4 and the base 2.1 is a proper value, if the taper is too large, the radial size increase value of the tension spring 2.4 in the unit displacement of the tension spring 2.4 is too large, and the process of the tension spring 2.4 for tensioning the spline groove of the workpiece is difficult to control; if the taper is too small, the expansion spring 2.4 can expand the spline groove of the workpiece too much, and the production efficiency is reduced.
Furthermore, the expansion spring 2.4 is provided with 6 openings 2.41, and the openings 2.41 are uniformly distributed on the circumference of the expansion spring 2.4. The radial dimension change range of the complete circumferential part is limited, so that 6 openings are formed in the expansion spring 2.4, the structural elasticity of the expansion spring 2.4 can be increased, the radial dimension change range of the expansion spring 2.4 is increased, and the expansion spring 2.4 can be used for expanding the spline grooves of the workpiece.
Further, the 6 openings 2.41 are divided into two groups, the two groups of openings 2.41 are oppositely oriented, and the two groups of openings 2.41 are arranged on the expansion spring 2.4 in a staggered manner. So the circumference at the two ends of the expanding spring 2.4 is damaged, the structural elasticity of the expanding spring 2.4 is further increased, the radial size change range of the expanding spring 2.4 is increased, and the expanding spring 2.4 is favorable for expanding the spline grooves of the workpiece.
Furthermore, a fixing gap 2.42 is formed in the expansion spring 2.4, an anti-rotation screw 2.5 is fixed on the base 2.1, and the anti-rotation screw 2.5 is matched in the fixing gap 2.42. So expand spring 2.4 and can not rotate when processing the work piece, guarantee the unable rotation of work piece through the spline groove effect, be favorable to increasing the machining precision of work piece.
Further, the tension spring 2.4 is made of 65 Mn. 65Mn has high strength and certain flexibility, and is suitable for manufacturing the tension spring 2.4.
Furthermore, a detection gas circuit 3.1 is arranged in the axial positioning block 3, one end of the detection gas circuit 3.1 leads to the working surface of the axial positioning block 3, and the other end of the detection gas circuit 3.1 is connected with a gas source. The double dynamical fixture during operation for the sleeping carriage of this embodiment, the air supply is gaseous to the interior input of detection gas circuit 3.1, flows out from the working face of axial locating piece 3, and when the work piece was tightly pushed up on axial locating piece 3, the export of detecting gas circuit 3.1 was sealed, detects the interior atmospheric pressure of gas circuit 3.1 through the measurement and can judge whether work piece axial positioning accomplishes, is favorable to realizing automatic fixed work piece.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a double dynamical fixture for sleeping carriage, characterized by includes:
the clamping chuck (1), the clamping chuck (1) is used for clamping the outer diameter of a workpiece;
the core expanding mechanism (2) is positioned in the chuck (1) and used for expanding the spline grooves of the workpiece;
the axial positioning block (3), the axial positioning block (3) is fixed on the chuck (1), and the axial positioning block (3) is used for determining the axial position of a workpiece;
the centre (4), the centre (4) is used for supporting the work piece tightly on the axial locating block (3);
the double-power mechanism (5), a first pull rod (6) and a second pull rod (7) are fixed on the double-power mechanism (5), the first pull rod (6) is used for driving the chuck (1) to move, and the second pull rod (7) is used for driving the core expanding mechanism (2) to move;
the chuck (1), the double-power mechanism (5) and the tip (4) are arranged on the frame.
2. The double-power clamping mechanism for the sleeping car as claimed in claim 1, wherein the core expanding mechanism (2) comprises: base (2.1), connecting rod (2.2), screw (2.3) and spring (2.4) that rises, base (2.1) are fixed on chuck (1), connecting rod (2.2) wear to establish in base (2.1), connecting rod (2.2) are connected with second pull rod (7), screw (2.3) are fixed on connecting rod (2.2), spring (2.4) cooperation that rises is on base (2.1), the contact surface that rises spring (2.4) and base (2.1) is the conical surface, screw (2.3) are used for the extrusion to rise spring (2.4).
3. The double-power clamping mechanism for the sleeping car as claimed in claim 2, wherein the taper of the contact surface of the expansion spring (2.4) and the base (2.1) is 0.08-0.1.
4. The double-power clamping mechanism for the sleeping car as claimed in claim 2, wherein the expansion spring (2.4) is provided with 6 openings (2.41), and the openings (2.41) are uniformly distributed on the circumference of the expansion spring (2.4).
5. Double dynamical clamping mechanism for sleeping car according to claim 4, characterized in that, the 6 openings (2.41) are divided into two groups, the two groups of openings (2.41) are in opposite directions, and the two groups of openings (2.41) are arranged on the expansion spring (2.4) in a staggered manner.
6. The double-power clamping mechanism for the sleeping car according to claim 2, wherein the expansion spring (2.4) is provided with a fixing notch (2.42), the base (2.1) is fixed with an anti-rotation screw (2.5), and the anti-rotation screw (2.5) is matched in the fixing notch (2.42).
7. Double dynamical clamping mechanism for a sleeping car according to any one of claims 2 to 6, characterized in that, the expansion spring (2.4) is made of 65 Mn.
8. The double-power clamping mechanism for the sleeping carriage as claimed in claim 1, wherein a detection gas circuit (3.1) is arranged in the axial positioning block (3), one end of the detection gas circuit (3.1) leads to a working surface of the axial positioning block (3), and the other end of the detection gas circuit (3.1) is connected with a gas source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220046959.9U CN216801742U (en) | 2022-01-06 | 2022-01-06 | Double-power clamping mechanism for sleeping car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220046959.9U CN216801742U (en) | 2022-01-06 | 2022-01-06 | Double-power clamping mechanism for sleeping car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216801742U true CN216801742U (en) | 2022-06-24 |
Family
ID=82064482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220046959.9U Active CN216801742U (en) | 2022-01-06 | 2022-01-06 | Double-power clamping mechanism for sleeping car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216801742U (en) |
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2022
- 2022-01-06 CN CN202220046959.9U patent/CN216801742U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311200 Zhejiang Hangzhou Xiaoshan District Xiaoshan economic and Technological Development Zone 120 North Xin Road Patentee after: Youjia International CNC Machine Tool Co.,Ltd. Address before: 311200 Zhejiang Hangzhou Xiaoshan District Xiaoshan economic and Technological Development Zone 120 North Xin Road Patentee before: HANGZHOU GOOD FRIEND PRECISION MACHINERY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |