Clamping mechanism of machining center

Abstract

The utility model discloses a machining center clamping mechanism which comprises an operation table body and a workpiece body, the central axis of the operation table body is vertically arranged, the top face of the operation table body is horizontal, and the workpiece body is coaxially placed on the top face of the operation table body. A workpiece alignment assembly arranged in the transverse direction is installed at the position, on the inner periphery of the workpiece body, of the top face of the operation table body, and the workpiece body is limited and aligned to the top face of the operation table body through the workpiece alignment assembly. The operation table has the beneficial effects that the workpiece alignment assembly arranged in the transverse direction is mounted in the middle of the top surface of the operation table body, so that the workpiece body can be quickly limited and aligned on the operation table body in a manner that the two ends of the workpiece alignment assembly synchronously extend outwards and are respectively propped against the two sides of the inner periphery of the workpiece body; and the workpiece body can be conveniently and rapidly aligned and placed on the operation table body.

Description

Technical Field

[0001] The utility model relates to the field of workpiece clamping auxiliary components of a machining center, and particularly relates to a clamping mechanism of a machining center. Background Technique

[0002] When machining a workpiece on a machining center, the workpiece needs to be placed on the fixture of the machining center, and then the workpiece is clamped by the fixture and then machined. A fixture refers to a device used to fix a machining object during the mechanical manufacturing process, so that it occupies a correct position to accept construction or detection. There are many types of fixtures used in machining centers, which can be divided into fixtures for machining regular parts and fixtures for machining irregular parts. Currently, when clamping regular parts such as cylindrical workpieces, a multi-jaw chuck fixture is usually used. However, the multi-jaw chuck fixture can only clamp cylindrical workpieces with a small diameter specification. For cylindrical workpieces with a large diameter specification, not only can the multi-jaw chuck not be used for clamping and fixing, but also it is very troublesome to align them during clamping. Content of the Utility Model

[0003] The purpose of the utility model is to provide a clamping mechanism of a machining center to solve the above problems. A workpiece alignment component arranged horizontally is installed in the middle of the top surface of the operation table body. In this way, the workpiece body can be quickly positioned and aligned on the operation table body by the way that both ends of the workpiece alignment component extend out synchronously and respectively abut against both sides of the inner periphery of the workpiece body. See the following description for details.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A clamping mechanism of a machining center provided by the utility model includes an operation table body and a workpiece body. The central axis of the operation table body is vertically arranged and the top surface is horizontal. The workpiece body is coaxially placed on the top surface of the operation table body;

[0006] A workpiece alignment component arranged horizontally is installed at the position of the inner periphery of the workpiece body on the top surface of the operation table body to position and align the workpiece body on the top surface of the operation table body through the workpiece alignment component;

[0007] Workpiece clamping components are installed at the positions outside both sides of the workpiece body on the top surface of the operation table body to clamp and fix the aligned workpiece body through the workpiece clamping components.

[0008] Preferably, the operation table body is a frustum of a cone. A connecting flange arranged coaxially extends outward and is fixed at the bottom of the periphery of the operation table body, and a plurality of connecting holes are vertically formed in the connecting flange.

[0009] Preferably, the workpiece body is a cylindrical workpiece.

[0010] Preferably, the workpiece clamping assemblies are also installed at the positions outside the front and rear of the workpiece body on the top surface of the operating table body for auxiliary clamping and fixing of the workpiece body.

[0011] Preferably, the workpiece alignment assembly includes a mounting seat and a force-applying block. The mounting seats are vertically fixed at the positions on both sides inside the workpiece body on the top surface of the operating table body, and the two mounting seats are symmetrically distributed about the central axis of the operating table body. Guide holes are transversely formed at the tops of the mounting seats, and the guide holes at both positions are transversely coaxially aligned, and the central axes of the guide holes at both positions are arranged along the radial direction of the operating table body. A force-applying block is arranged between the mounting seats at both positions. Threaded sleeves are coaxially and fixedly extended from both end faces of the force-applying block and are transversely arranged, and the threaded sleeves at both positions are symmetrically distributed about the force-applying block. The outer ends of the threaded sleeves at both positions away from each other abut against the inner end faces of the adjacent mounting seats, and limit screws are coaxially threadedly engaged with the inner circumferences of the threaded sleeves at both positions. The thread directions of the limit screws at both positions are symmetric with each other, and the outer ends of the limit screws at both positions away from each other pass through the adjacent guide holes in a coaxially sliding fit manner.

[0012] Preferably, elastic ends made of buffer material are coaxially fixed to the outer ends of the limit screws at both positions away from each other, and the outer surfaces of the elastic ends are arc surfaces.

[0013] Preferably, the force-applying blocks are all in the shape of an external hexagon.

[0014] Preferably, the workpiece clamping assemblies each include a cylinder body and a clamping seat. The cylinder bodies at both positions are transversely arranged and are respectively arranged at the outer positions on both sides of the workpiece body. The cylinder bodies are fixed to the outer edge positions of the top surface of the operating table body through cylinder seats, and the inner ends of the push rods of the cylinder bodies close to each other pass through the corresponding cylinder seats in a sliding fit manner and are installed and fixed with the clamping seats through fixing sleeves. Pressing grooves capable of pressing against the periphery of the workpiece body are formed on the opposite end faces of the clamping seats, and the pressing grooves are through grooves in the vertical direction.

[0015] Preferably, the horizontal cross-sectional shapes of the pressing grooves are all V-shaped, buffer pads made of buffer material are fixedly covered on the inner surfaces of the pressing grooves, and the contour directions of the buffer pads are consistent with the corresponding pressing grooves.

[0016] When using the above-mentioned clamping mechanism of a machining center, specifically during the process of clamping the workpiece body on the operating table body, since the workpiece alignment component arranged horizontally is installed in the middle of the top surface of the operating table body, the workpiece body can be quickly positioned and aligned on the operating table body by the way that the two ends of the workpiece alignment component extend out synchronously and respectively abut against both sides of the inner periphery of the workpiece body. This facilitates quickly aligning and placing the workpiece body on the operating table body. Specifically, when operating the workpiece alignment component, since the threaded sleeves are coaxially fixed on both sides of the force application block of the workpiece alignment component, and at the same time, the limiting screws are coaxially engaged with the threaded sleeves, and the thread directions of the limiting screws at both sides are symmetrical to each other, then by turning the force application block, the limiting screws at both sides can be made to approach or move away from each other synchronously. Thus, it is not only convenient to quickly operate the workpiece alignment component to position and align the workpiece body on the operating table body, but also convenient for the workpiece alignment component to perform the positioning and alignment operation on the workpiece bodies with different diameter specifications, improving the versatility of the use of the workpiece alignment component. After the workpiece body is positioned and aligned, since the workpiece clamping components are installed on both sides of the workbench body on the top surface of the operating table body, the push rods of the cylinder bodies of the workpiece clamping components at both sides can drive the corresponding clamping seats to approach or move away from each other by horizontally telescoping. Then, by the way that the clamping seats at both sides approach each other, the aligned workpiece body can be clamped and fixed, and at the same time, by the way that the clamping seats at both sides move away from each other, the workpiece body can be loosened and taken away. The clamping, fixing, loosening, and taking away methods of the workpiece body are simple and easy to implement. Moreover, since the pressing grooves in the shape of V-grooves are provided on the end faces of the clamping seats at both sides facing each other, the workpiece body can be firmly and reliably clamped and fixed by the way that the pressing grooves contact the corresponding outer sides of the workpiece body. At the same time, the pressing grooves can also adapt to clamping the workpiece bodies with different outer diameter specifications, improving the general application range of the use of the workpiece clamping component.

[0017] The beneficial effects are as follows: 1. In the present utility model, the workpiece alignment component arranged horizontally is installed in the middle of the top surface of the operating table body. By this way, the workpiece body can be quickly positioned and aligned on the operating table body by the way that the two ends of the workpiece alignment component extend out synchronously and respectively abut against both sides of the inner periphery of the workpiece body, which is convenient for quickly aligning and placing the workpiece body on the operating table body;

[0018] 2. Threaded sleeves are coaxially fixed on both sides of the force-applying block of the workpiece alignment component. At the same time, the threaded sleeves are coaxially engaged with limit screws, and the thread directions of the limit screws on both sides are symmetrical to each other. Then, by turning the force-applying block, the limit screws on both sides can approach or move away from each other synchronously, which not only facilitates the quick operation of the workpiece alignment component to limit and align the workpiece body onto the operating table body, but also enables the workpiece alignment component to perform limit and alignment operations on workpiece bodies with different diameter specifications, improving the versatility of the workpiece alignment component;

[0019] 3. Workpiece clamping components are installed on the top surface of the operating table body on both sides of the workbench body. In this way, the cylinder bodies of the workpiece clamping components on both sides can drive the corresponding clamping seats to approach or move away from each other. Then, by the way that the clamping seats on both sides approach each other, the aligned workpiece body can be clamped and fixed, and at the same time, by the way that the clamping seats on both sides move away from each other, the workpiece body can be loosened and removed. The clamping, fixing, loosening, and removing methods of the workpiece body are simple and easy to implement;

[0020] 4. V-shaped grooves are formed on the opposite end faces of the clamping seats on both sides. Then, by contacting the corresponding outer side of the workpiece body through the grooves, the workpiece body can be firmly and reliably clamped and fixed, and at the same time, the grooves can also adapt to clamping workpiece bodies with different outer diameter specifications, improving the general application range of the workpiece clamping component. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 is the overall isometric schematic diagram of the present invention;

[0023] Figure 2 is the present invention Figure 1 sectional schematic Figure 1 ;

[0024] Figure 3 is the present invention Figure 1 sectional schematic Figure 2 ;

[0025] Figure 4 is the present invention Figure 1 front external view;

[0026] Figure 5 is the present inventionFigure 1 Left external view;

[0027] Figure 6 is the utility model Figure 1 Right external view;

[0028] Figure 7 is the utility model Figure 1 Top external view.

[0029] The reference numerals are explained as follows:

[0030] 1. Workpiece body; 2. Operating table body; 201. Connecting flange; 202. Connecting hole; 3. Workpiece clamping assembly; 301. Cylinder body; 302. Push rod; 303. Cylinder seat; 304. Fixed sleeve; 305. Clamping seat; 306. Buffer pad; 307. Pressing groove; 4. Workpiece alignment assembly; 401. Elastic end; 402. Limit screw; 403. Mounting seat; 404. Guide hole; 405. Threaded sleeve; 406. Force application block. Specific embodiments

[0031] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0032] See Figures 1 - 7As shown in the figure, the present utility model provides a clamping mechanism for a machining center, which includes an operation table body 2 and a workpiece body 1. The central axis of the operation table body 2 is vertically arranged and the top surface is horizontal. The workpiece body 1 is coaxially placed on the top surface of the operation table body 2. A workpiece alignment component 4 arranged horizontally is installed at the position within the periphery of the workpiece body 1 on the top surface of the operation table body 2, so as to limit and align the workpiece body 1 on the top surface of the operation table body 2 through the workpiece alignment component 4. Specifically, the workpiece alignment component 4 includes a mounting seat 403 and a force-applying block 406. Mounting seats 403 are vertically and fixedly arranged at both sides within the periphery of the workpiece body 1 on the top surface of the operation table body 2, and the two mounting seats 403 are symmetrically distributed about the central axis of the operation table body 2. Guide holes 404 are horizontally opened at the tops of the mounting seats 403. The guide holes 404 at both positions are horizontally coaxially aligned, and the central axes of the guide holes 404 at both positions are arranged along the radial direction of the operation table body 2. A force-applying block 406 is arranged between the mounting seats 403 at both positions. Horizontally arranged threaded sleeves 405 are coaxially and fixedly extended from both end faces of the force-applying block 406, and the threaded sleeves 405 at both positions are symmetrically distributed about the force-applying block 406. The outer ends of the threaded sleeves 405 at both positions away from each other abut against the inner end faces of the adjacent mounting seats 403, and limit screws 402 are coaxially threadedly engaged within the peripheries of the threaded sleeves 405 at both positions. The thread directions of the limit screws 402 at both positions are symmetric to each other, and the outer ends of the limit screws 402 at both positions away from each other pass through the adjacent guide holes 404 in a coaxially sliding fit manner. The function of such a setting is that, firstly, the workpiece body 1 can be quickly limited and aligned on the operation table body 2 by the way that both ends of the workpiece alignment component 4 extend out synchronously and respectively abut against both sides within the periphery of the workpiece body 1, which is convenient for quickly aligning and placing the workpiece body 1 on the operation table body 2. Specifically, by turning the force-applying block 406, the limit screws 402 at both positions can be made to approach or move away from each other synchronously, so that it is not only convenient to quickly operate the workpiece alignment component 4 to limit and align the workpiece body 1 on the operation table body 2, but also convenient for the workpiece alignment component 4 to perform the limit and alignment operation on the workpiece body 1 with different diameter specifications.

[0033] See Figures 1 - 3As shown in the figure, workpiece clamping components 3 are installed on the top surface of the operating table body 2 on the outer sides of both sides of the workpiece body 1 to clamp and fix the aligned workpiece body 1 through the workpiece clamping components 3. Specifically, each workpiece clamping component 3 includes a cylinder body 301 and a clamping seat 305. The cylinder bodies 301 on both sides are arranged horizontally and are respectively located on the outer sides of both sides of the workpiece body 1. The cylinder bodies 301 are fixed to the outer edge of the top surface of the operating table body 2 through cylinder seats 303. The inner ends of the push rods 302 of the cylinder bodies 301 close to each other pass through the corresponding cylinder seats 303 in a sliding fit manner, and clamping seats 305 are installed and fixed through fixing sleeves 304. Pressing grooves 307 capable of pressing against the periphery of the workpiece body 1 are provided on the opposite end faces of the clamping seats 305, and the pressing grooves 307 are through grooves in the vertical direction. The purpose of such a setting is that the cylinder bodies 301 of the workpiece clamping components 3 on both sides can drive the corresponding clamping seats 305 to approach or move away from each other. Then, the aligned workpiece body 1 can be clamped and fixed by the approach of the clamping seats 305 on both sides. At the same time, the workpiece body 1 can be loosened and removed by the separation of the clamping seats 305 on both sides.

[0034] See Figures 1 - 3 As shown in the figure, the following optimizations are respectively carried out on the operating table body 2, the workpiece body 1, the workpiece alignment component 4, and the workpiece clamping component 3. Specifically for the operating table body 2, the operating table body 2 is a frustum of a cone. A coaxially arranged connecting flange 201 extends outward from the bottom of the periphery of the operating table body 2, and a plurality of connecting holes 202 are vertically provided in the connecting flange 201. In this way, it is convenient to fix and install the operating table body 2 at the set position of the machining center by installing bolts through the connecting holes 202. Specifically for the workpiece body 1, the workpiece body 1 is a cylindrical workpiece, so that the workpiece alignment component 4 can perform a limiting and alignment operation on the workpiece body 1, and at the same time, the workpiece clamping component 3 can perform a clamping and fixing operation on the workpiece body 1.

[0035] Specifically for the workpiece alignment component 4, workpiece clamping components 3 are also installed on the top surface of the operating table body 2 at the front and rear outer sides of the workpiece body 1 to assist in clamping and fixing the workpiece body 1. In this way, after the workpiece clamping components 3 on both sides clamp and fix the workpiece body 1, it is convenient to perform auxiliary clamping on the workpiece body 1 through the workpiece clamping components 3 at the front and rear positions, further improving the stability after clamping and fixing the workpiece body 1.

[0036] Meanwhile, elastic ends 401 made of buffer material are coaxially fixed to the outer ends of the limiting screw rods 402 at both positions, and the outer surfaces of the elastic ends 401 are all arc surfaces, so as to elastically buffer and protect the inner circumference of the workpiece body 1 by contacting the inner circumference of the workpiece body 1 through the elastic ends 401. Further optionally, the force-applying blocks 406 are all in the shape of external hexagons, so that the force-applying blocks 406 can be smoothly rotated by means of tools such as wrenches.

[0037] Specifically for the workpiece clamping assembly 3, the horizontal cross-sectional shape of the pressure groove 307 is V-shaped, and the inner surface of the pressure groove 307 is covered and fixed with a buffer pad 306 made of buffer material, and the contour trend of the buffer pad 306 is consistent with the corresponding pressure groove 307. With such a setting, firstly, it is convenient to firmly and reliably clamp and fix the workpiece body 1 by contacting the corresponding outer side of the workpiece body 1 through the pressure groove 307, and at the same time, the pressure groove 307 can also adapt to clamping workpiece bodies 1 with different outer diameter specifications. Moreover, due to the presence of the buffer pad 306, the outer circumference of the workpiece body 1 can be elastically deformed through the buffer pad 306.

[0038] With the above structure, specifically during the process of clamping and using the workpiece body 1 on the operating table body 2, since a workpiece alignment component 4 arranged horizontally is installed in the middle of the top surface of the operating table body 2, the workpiece body 1 can be quickly positioned and aligned on the operating table body 2 by the way that the two ends of the workpiece alignment component 4 extend out synchronously and respectively abut against both sides of the inner circumference of the workpiece body 1, which is convenient for quickly aligning and placing the workpiece body 1 on the operating table body 2. Specifically when operating the workpiece alignment component 4, since threaded sleeves 405 are coaxially fixed at both sides of the force application block 406 of the workpiece alignment component 4, and the threaded sleeves 405 are coaxially engaged with limit screws 402, and the thread directions of the limit screws 402 at both sides are symmetric with each other, then by turning the force application block 406, the limit screws 402 at both sides can be made to approach or move away from each other synchronously. Thus, it is not only convenient to quickly operate the workpiece alignment component 4 to position and align the workpiece body 1 on the operating table body 2, but also convenient for the workpiece alignment component 4 to perform positioning and alignment operations on workpiece bodies 1 with different diameter specifications, improving the versatility of the use of the workpiece alignment component 4. After the workpiece body 1 is positioned and aligned, since workpiece clamping components 3 are installed at both sides of the workbench body on the top surface of the operating table body 2, the corresponding clamping seats 305 can be driven to approach or move away from each other by the way that the push rods 302 of the cylinder bodies 301 of the workpiece clamping components 3 at both sides extend and retract horizontally. Then, the aligned workpiece body 1 can be clamped and fixed by the way that the clamping seats 305 at both sides approach each other, and the workpiece body 1 can be loosened and taken away by the way that the clamping seats 305 at both sides move away from each other. The clamping, fixing, loosening and taking away methods of the workpiece body 1 are simple and easy to implement. Moreover, since V-shaped groove-shaped pressing grooves 307 are formed on the end faces of the clamping seats 305 at both sides facing each other, the workpiece body 1 can be firmly and reliably clamped and fixed by the way that the pressing grooves 307 contact the corresponding outer sides of the workpiece body 1, and at the same time, the pressing grooves 307 can also adapt to clamp workpiece bodies 1 with different outer diameter specifications, improving the general application range of the use of the workpiece clamping component 3.

[0039] As described above, the above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claimed rights.

Claims

1. A clamping mechanism for a machining center, comprising an operating table body (2) and a workpiece body (1), characterized in that: The central axis of the operating table body (2) is arranged vertically and the top surface is horizontal, and the workpiece body (1) is coaxially placed on the top surface of the operating table body (2); A workpiece alignment component (4) arranged in a transverse direction is installed on the top surface of the operating table body (2) at a position inside the workpiece body (1), so as to limit and align the workpiece body (1) on the top surface of the operating table body (2) through the workpiece alignment component (4); The top surface of the operating table body (2) is provided with workpiece clamping assemblies (3) at positions outside both sides of the workpiece body (1), so as to clamp and fix the aligned workpiece body (1) through the workpiece clamping assemblies (3).

2. A clamping mechanism for a machining center according to claim 1, characterized in that: The operating table body (2) is a truncated table, and a coaxially arranged connecting flange (201) is fixedly extended outward from the outer bottom of the operating table body (2), and a plurality of connecting holes (202) are vertically opened on the connecting flange (201).

3. A clamping mechanism for a machining center according to claim 2, characterized in that: The workpiece body (1) is a cylindrical workpiece.

4. A clamping mechanism for a machining center according to claim 3, characterized in that: The top surface of the operating table body (2) is also provided with the workpiece clamping assembly (3) at positions outside the front and rear of the workpiece body (1) for auxiliary clamping and fixing of the workpiece body (1).

5. A clamping mechanism for a machining center according to any one of claims 1 to 4, characterized in that: The workpiece alignment assembly (4) comprises a mounting seat (403) and a force block (406); the mounting seats (403) are vertically fixed on the top surface of the operating table body (2) at positions on both sides of the inner periphery of the workpiece body (1); and the two mounting seats (403) are symmetrically distributed about the central axis of the operating table body (2); the top of the mounting seat (403) is provided with a guide hole (404) in the transverse direction; the guide holes (404) at the two side positions are coaxial in the transverse direction, and the central axes of the guide holes (404) at the two side positions are arranged along the radial direction of the operating table body (2); and the force block (406) is arranged between the mounting seats (403) at the two side positions. The end surfaces of both sides of the force applying block (406) are coaxially extended and fixed with a threaded sleeve (405) arranged in the transverse direction, and the threaded sleeves (405) at the two side positions are symmetrically distributed about the force applying block (406), the outer ends of the threaded sleeves (405) at the two side positions that are away from each other are in contact with the inner end surfaces of the adjacent mounting seats (403), and the inner peripheries of the threaded sleeves (405) at the two side positions are coaxially threadedly matched with the limiting screws (402), the thread rotation directions of the limiting screws (402) at the two side positions are symmetrical to each other, and the outer ends of the limiting screws (402) at the two side positions that are away from each other are passed through the adjacent guide holes (404) in a coaxial sliding fit manner.

6. A clamping mechanism for a machining center according to claim 5, characterized in that: The outer ends of the limiting screws (402) at both sides that are away from each other are coaxially fixed with elastic end heads (401) made of a buffer material, and the outer surfaces of the elastic end heads (401) are all arc surfaces.

7. A clamping mechanism for a machining center according to claim 6, characterized in that: The force applying blocks (406) are all in an outer hexagonal shape.

8. A clamping mechanism for a machining center according to claim 6 or 7, characterized in that: The workpiece clamping assembly (3) comprises a cylinder body (301) and a clamping seat (305). The cylinder bodies (301) at both sides are arranged in a transverse direction and are respectively arranged at the outer positions on both sides of the workpiece body (1). The cylinder bodies (301) are fixed to the outer edge of the top surface of the operating table body (2) through the cylinder seat (303). The inner ends of the push rods (302) of the cylinder bodies (301) close to each other pass through the corresponding cylinder seats (303) in a sliding manner and are fixed to the clamping seat (305) through a fixing sleeve (304). The end faces of the clamping seat (305) facing each other are provided with pressing grooves (307) that can be pressed against the periphery of the workpiece body (1), and the pressing grooves (307) are through grooves in the vertical direction.

9. A clamping mechanism for a machining center according to claim 8, characterized in that: The horizontal cross-section of the pressing groove (307) is V-shaped, the inner surface of the pressing groove (307) is covered with a buffer pad (306) fixed with a buffer material, and the contour direction of the buffer pad (306) is consistent with the corresponding pressing groove (307).

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