Numerical control machine tool with special-shaped workpiece clamping assembly

Abstract

The utility model belongs to the technical field of numerical control machining of special-shaped workpieces, particularly relates to a numerical control machine tool provided with a special-shaped workpiece clamping assembly, and aims to solve the problems that the machining precision and the machining quality are affected due to the fact that the existing non-standard special-shaped workpieces are lack of ideal clamping, and the special-shaped workpieces shift and deform in the machining process. According to the technical scheme, the cutter comprises a main body, a cutting device used for cutting is arranged on the inner wall of the top of the main body, and a cutting tool bit is arranged at the bottom of the cutting device. The clamping rods can adapt to clamping of special-shaped workpieces of different shapes and sizes, the clamping stability and flexibility are improved, the multiple extrusion blocks are extruded by driving the slope moving block, so that the multiple extrusion blocks press the corresponding clamping rods, the positions of the multiple clamping rods are fixed when the special-shaped workpieces are clamped, and operation is easy and convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to special-shaped workpiece numerical control processing technical field especially relates to a numerical control machine tool with special-shaped workpiece clamping assembly. BACKGROUND

[0002] Numerical control machine tool is a kind of high degree of automation processing equipment, it utilizes computer program to control machine tool action, to realize the efficient, accurate processing to workpiece, need to be fixed to workpiece in the process of numerical control machine tool processing to avoid workpiece movement, to ensure that processing accuracy and processing safety.

[0003] Traditional clamping mode often uses fixed clamp, and this clamp has good clamping effect for regular shape, size standard workpiece, but for non-standard special-shaped workpiece, it is difficult to achieve ideal clamping effect, so that special-shaped workpiece is moved in the processing, and is deformed due to unstable clamping, to affect processing accuracy and processing quality, therefore, we propose a numerical control machine tool with special-shaped workpiece clamping assembly to solve the above problems. UTILITARIAN CONTENT

[0004] The utility model aims at solving the lack of ideal clamping for non-standard special-shaped workpiece in prior art, which leads to workpiece displacement and deformation of special-shaped workpiece in the processing, thereby affecting processing accuracy and processing quality, and proposes a numerical control machine tool with special-shaped workpiece clamping assembly.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] A numerical control machine tool with special-shaped workpiece clamping assembly, including main part, the top inner wall of main part is provided with cutting device for cutting, the bottom of cutting device is provided with cutting tool bit, the side of main part is fixedly provided with control panel, the bottom inner wall of main part is fixedly provided with guide rail, two sliding blocks are slidably connected on guide rail, and the numerical control machine tool further includes:

[0007] Two clamping assemblies, two clamping assemblies are fixedly arranged on the top of corresponding sliding block, and two clamping assemblies clamp and cooperate to clamp special-shaped workpiece.

[0008] Driving assembly, driving assembly is arranged on the bottom inner wall of main part, for driving two sliding blocks to move, and completes the clamping of special-shaped workpiece.

[0009] In a possible design, the clamping assembly comprises a fixed block fixedly arranged on the top of the corresponding sliding block, and two positioning assemblies are symmetrically fixed on one side of the fixed block, wherein the positioning assembly comprises a clamping block, a plurality of positioning grooves are equidistantly arranged on one side of the clamping block, a clamping rod is slidably connected in each of the positioning grooves, and one end of each of the clamping rods extends to the outside of the positioning groove. By arranging the plurality of clamping rods which can slide in the positioning groove, the clamping rods can be more closely attached to the surface of the non-standard special-shaped workpiece, so as to facilitate clamping. A brake assembly for positioning the two positioning assemblies is arranged in the fixed block, and the brake assembly is located between the two positioning assemblies.

[0010] In a possible design, a sliding rod is fixedly arranged on the inner wall of one side of each of the plurality of positioning grooves, the plurality of sliding rods are slidably extended into the corresponding clamping rods, a spring is arranged on each of the plurality of sliding rods, and the two ends of each of the plurality of springs abut against the inner wall on one side of the corresponding positioning groove and the side of the clamping rod. By the elastic force of the spring, the clamping rod can be reset after being contacted and clamped.

[0011] In a possible design, a limiting groove is fixedly arranged on the bottom of each of the plurality of clamping rods, a plurality of positioning holes are arranged on the bottom of the clamping block, the plurality of positioning holes are in communication with the corresponding positioning grooves, a positioning bolt is threadedly connected in each of the plurality of positioning holes, and the top end of each of the plurality of positioning bolts extends into the corresponding limiting groove. By arranging the bolt, the clamping rod can be prevented from being ejected from the positioning groove due to the elastic force of the spring.

[0012] In a possible design, the brake assembly comprises a plurality of extrusion openings arranged on the top of the clamping block and in communication with the positioning grooves, an extrusion block is slidably connected in each of the plurality of extrusion openings, the top of each of the plurality of extrusion blocks is provided with a slope, the bottom of each of the plurality of extrusion blocks is in contact with the top of the clamping rod, an extrusion cavity is arranged on the fixed block, the top of each of the plurality of extrusion blocks extends to the inside of the extrusion cavity, a slope moving block is slidably connected in the extrusion cavity, the slope of the slope moving block is in contact with the slope of each of the plurality of extrusion blocks, a plurality of moving rods are slidably connected in the fixed block, the number of the plurality of moving rods is four, one end of each of the four moving rods is fixedly connected to one side of the slope moving block, the other end of each of the four moving rods is fixedly connected to the same top rod, a limiting bolt is threadedly penetrated through the top rod, and one end of the limiting bolt is rotatably connected to one side of the fixed block. By rotating the limiting bolt to drive the top rod to move, the moving rod and the slope moving block thereon are driven to move, so that the slope of the slope moving block extrudes the plurality of extrusion blocks. After being extruded, the plurality of extrusion blocks move in the corresponding extrusion openings, and the plurality of extrusion blocks are used to brake the clamping rod.

[0013] In a possible design, the driving assembly comprises a bidirectional threaded rod, the bidirectional threaded rod is rotationally connected with the inner walls on both sides of the guide rail, the bidirectional threaded rod is threaded through two sliders, and the two sliders are located on the positive and negative threaded segments of the bidirectional threaded rod respectively; the inner walls on both sides of the guide rail are fixedly provided with limiting rods, the limiting rods are slidably threaded through the two sliders; the bottom inner wall of the main body is fixedly provided with a motor, and the output end of the motor is fixedly connected with the bidirectional threaded rod; the bidirectional threaded rod is driven to rotate by the motor, so that the two sliders on the bidirectional threaded rod are close to or away from each other, and the clamping assemblies on the two sliders complete clamping of the workpiece.

[0014] In a possible design, the top of the guide rail is directly below the cutting device, and a storage tray is threadedly connected with the guide rail through a threaded rod, so as to limit the height of the workpiece when the workpiece is clamped, and facilitate clamping.

[0015] In the application, first, the special-shaped workpiece is placed on the storage tray above the guide rail, then the motor is started, the output end of the motor drives the bidirectional threaded rod to rotate, and since the two sliders are located on the positive and negative threaded segments of the bidirectional threaded rod respectively, when the bidirectional threaded rod rotates, the two sliders move towards each other along the guide rail until the two clamping assemblies are in contact with the special-shaped workpiece.

[0016] When the two clamping assemblies are in contact with the special-shaped workpiece, the plurality of clamping rods in the clamping assembly are pressed to different degrees by the surface of the special-shaped workpiece and are arranged in the inside of the positioning groove, so that the side of the two clamping assemblies close to each other is shaped as the workpiece, then the limiting bolt can be rotated, the limiting bolt drives the top rod to move, thereby driving the moving rod and the inclined surface moving block thereon to move, the inclined surface of the inclined surface moving block presses the plurality of pressing blocks, the pressing blocks move in the corresponding pressing opening, until the bottom of the pressing block is in close contact with the top of the corresponding clamping rod, thereby fixing the positions of the plurality of clamping rods, and preventing the clamping rod from sliding in the positioning groove.

[0017] In addition, in order to limit the height of the workpiece, the special-shaped workpiece on the storage tray can be adjusted to a suitable height by rotating the threaded rod on the top of the guide rail, so as to facilitate clamping of the two clamping assemblies, finally, the cutting parameters are set through the control panel, the cutting device is started to descend for cutting, after cutting is completed, the motor is started in reverse, the two sliders move away from each other, the clamping assemblies are loosened, and the processed special-shaped workpiece is taken out.

[0018] If another special-shaped workpiece needs to be clamped, the limiting bolt is twisted to move the inclined surface moving block, thereby releasing the pressing of the plurality of pressing blocks and releasing the fixing of the position of the clamping rod, and the elastic force of the spring enables the clamping rod to reset to the original position, thereby facilitating adjustment of clamping of other special-shaped workpieces.

[0019] Beneficial effects: in the utility model, two clamping assemblies are arranged, the two clamping assemblies are matched to clamp the special-shaped workpiece, different shapes and sizes of special-shaped workpieces can be clamped, and the stability and flexibility of clamping are improved.

[0020] In the utility model, the clamping rod in the clamping assembly can slide in the positioning groove, the clamping rod can be more matched with the surface of the non-standard special-shaped workpiece, and the clamping effect is further improved.

[0021] In the utility model, the movable rod and the inclined surface moving block can be moved by rotating the limiting bolt, the inclined surface of the inclined surface moving block extrudes the plurality of extrusion blocks, the plurality of extrusion blocks are pressed to the corresponding clamping rods, the plurality of clamping rods can be fixed in position, and the operation is simple and convenient.

[0022] In the utility model, the clamping rod can clamp different shapes and sizes of special-shaped workpieces, the stability and flexibility of clamping are improved, the plurality of extrusion blocks are pressed to the corresponding clamping rods by driving the inclined surface moving block to extrude the plurality of extrusion blocks, the plurality of clamping rods are fixed in position when clamping the special-shaped workpiece, and the operation is simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A three-dimensional structure schematic view of the numerical control machine tool with the special-shaped workpiece clamping assembly is provided for the utility model;

[0024] Figure 2 A guide rail three-dimensional structure schematic view of the numerical control machine tool with the special-shaped workpiece clamping assembly is provided for the utility model;

[0025] Figure 3 A fixed block three-dimensional structure schematic view of the numerical control machine tool with the special-shaped workpiece clamping assembly is provided for the utility model;

[0026] Figure 4 A clamping block partial section three-dimensional structure schematic view of the numerical control machine tool with the special-shaped workpiece clamping assembly is provided for the utility model;

[0027] Figure 5 A clamping block partial section three-dimensional structure schematic view of the numerical control machine tool with the special-shaped workpiece clamping assembly is provided for the utility model;

[0028] Figure 6 A fixed block partial section three-dimensional structure schematic view of the numerical control machine tool with the special-shaped workpiece clamping assembly is provided for the utility model;

[0029] Figure 7 The utility model provides a fixed block explosion three dimensional structure schematic diagram of numerical control machine tool with special-shaped workpiece clamping assembly.

[0030] In the drawing: 1, main body; 2, cutting device; 3, control panel; 4, guide rail; 5, sliding block; 6, two-way threaded rod; 7, limiting rod; 8, motor; 9, fixed block; 10, clamping block; 11, clamping rod; 111, limiting groove; 12, sliding rod; 13, spring; 14, positioning hole; 15, extrusion block; 16, moving rod; 17, inclined surface moving block; 18, jacking rod; 19, limiting bolt; 20, storage tray. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0032] Embodiment 1: refer to Figures 1-7 A numerical control machine tool, including main body 1, the top inner wall of main body 1 is installed with cutting device 2, the bottom of this cutting device 2 is provided with cutting tool bit, is used to carry out cutting processing to workpiece. The side of main body 1 is equipped with control panel 3, and the operator is convenient for controlling the operation of machine tool. The bottom inner wall of main body 1 is fixed with guide rail 4, and two sliding blocks 5 are slidably connected on guide rail 4.

[0033] In order to realize the clamping of special-shaped workpiece, one clamping assembly is fixedly arranged on the top of each sliding block 5. The two clamping assemblies cooperate with each other and can clamp workpieces of various shapes. In addition, the bottom inner wall of main body 1 is also provided with a driving assembly for driving the two sliding blocks 5 to move on the guide rail 4, so as to adjust the distance between the two clamping assemblies to adapt to workpieces of different sizes.

[0034] The specific structure of the clamping assembly is as follows: each clamping assembly includes a fixed block 9, which is fixedly installed on the top of the corresponding sliding block 5. Two positioning assemblies are symmetrically embedded on one side of the fixed block 9, and each positioning assembly includes a clamping block 10. A plurality of positioning grooves are formed on one side of the clamping block 10 at equal intervals, and a clamping rod 11 is slidably connected in each positioning groove. One end of the clamping rod 11 extends to the outside of the positioning groove and can contact the surface of the workpiece to clamp the workpiece.

[0035] In order to enhance the clamping effect of the clamping rod 11, the inner wall of one side of the positioning groove is fixed with a sliding rod 12 which is slidingly extended into the corresponding clamping rod 11. A spring 13 is sleeved on the sliding rod 12, and the two ends of the spring 13 are respectively in contact with the inner wall of one side of the positioning groove and one side of the clamping rod 11. When the clamping rod 11 is in contact with the workpiece, the spring 13 will be compressed, thereby generating a spring force, so that the clamping rod 11 can be more closely attached to the surface of the workpiece.

[0036] In order to realize the simultaneous control of multiple clamping rods 11, a brake assembly is arranged on the fixed block 9. The brake assembly includes multiple extrusion openings communicated with the positioning grooves and arranged on the top of the clamping block 10, and an extrusion block 15 is slidingly connected in the extrusion opening. The top of the extrusion block 15 is provided with a slope, and the bottom is in contact with the top of the clamping rod 11. An extrusion cavity is also arranged on the fixed block 9, and the top of the multiple extrusion blocks 15 extends into the interior of the extrusion cavity. A slope moving block 17 is slidingly connected in the extrusion cavity, and the slope of the slope moving block 17 is in contact with the slope of the multiple extrusion blocks 15. Four moving rods 16 are slidingly connected in the interior of the fixed block 9, one end of the moving rod 16 is fixedly connected with one side of the slope moving block 17, and the other end is fixedly connected with a top rod 18. A limiting bolt 19 is threaded through the top rod 18, and one end of the limiting bolt 19 is rotatably connected with one side of the fixed block 9.

[0037] When it is necessary to fix the position of the clamping rod 11, the limiting bolt 19 can be rotated to drive the top rod 18 to move. The movement of the top rod 18 drives the moving rod 16 and the slope moving block 17 to move, so that the slope of the slope moving block 17 extrudes the multiple extrusion blocks 15. After being extruded, the extrusion block 15 moves in the corresponding extrusion opening, and the bottom thereof is attached to the top of the corresponding clamping rod 11, thereby fixing the positions of the multiple clamping rods 11.

[0038] The specific structure of the driving assembly is as follows: the driving assembly includes a double-thread rod 6 which is rotatably connected with the inner walls of the two sides of the guide rail 4. The double-thread rod 6 is threaded through two sliding blocks 5, and the two sliding blocks 5 are respectively located on the positive and negative threaded segments of the double-thread rod 6. The inner walls of the two sides of the guide rail 4 are also fixed with a limiting rod 7 which slidingly penetrates the two sliding blocks 5 to limit the rotation of the sliding block 5. The inner wall of the bottom of the main body 1 is fixed with a motor 8, and the output end of the motor 8 is fixedly connected with the double-thread rod 6.

[0039] When it is necessary to adjust the distance between the two sliding blocks 5, the motor 8 can be started to drive the double-thread rod 6 to rotate. Since the two sliding blocks 5 are respectively located on the positive and negative threaded segments of the double-thread rod 6, the rotation of the double-thread rod 6 will make the two sliding blocks 5 approach or move away on the guide rail 4, thereby adjusting the distance between the two clamping assemblies to adapt to workpieces of different sizes.

[0040] The application can be used in the field of special-shaped workpiece numerical control machining technology, and can also be used in other fields applicable to the application.

[0041] Embodiment 2: Reference Figures 1-5 On the basis of embodiment one, an improvement is made: a numerical control machine tool provided with a special-shaped workpiece clamping assembly is applied to the field of special-shaped workpiece numerical control machining technology. In addition, in order to limit the height of the workpiece when clamping the workpiece, a storage tray 20 is threadedly connected to the top of the guide rail 4 directly below the cutting device 2. The operator can adjust the position of the storage tray 20 according to the height of the workpiece to ensure that the workpiece is in the correct position when clamped.

[0042] In order to prevent the clamping rod 11 from being ejected from the positioning groove under the elastic force of the spring 13, the bottom of the clamping rod 11 is fixed with a limiting groove 111, and the bottom of the clamping block 10 is provided with a positioning hole 14 in communication with the limiting groove. The positioning hole 14 is threadedly connected with a positioning bolt, and the top end of the positioning bolt extends into the corresponding limiting groove 111, thereby limiting the movement of the clamping rod 11.

[0043] However, as is well known to those skilled in the art, the working principle and wiring method of the motor 8 are common, which belong to conventional means or common general knowledge, and will not be described here. Those skilled in the art can make any selection or arrangement according to their needs or convenience.

[0044] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A CNC machine tool equipped with an irregular workpiece clamping assembly, comprising a main body (1), wherein a cutting device (2) for cutting is provided on the top inner wall of the main body (1), a cutting head is provided on the bottom of the cutting device (2), a control panel (3) is fixedly provided on one side of the main body (1), and a guide rail (4) is fixedly provided on the bottom inner wall of the main body (1), wherein two sliders (5) are slidably connected on the guide rail (4), characterized in that, The numerical control machine tool further comprises: Two clamping assemblies are fixedly arranged on the top of the corresponding sliders (5), and the two clamping assemblies clamp the special-shaped workpieces, the clamping assembly comprises a fixed block (9) fixedly arranged on the top of the corresponding slider (5), and two positioning assemblies are symmetrically fixedly embedded on one side of the fixed block (9), wherein the positioning assembly comprises a clamping block (10), a plurality of positioning grooves are formed in one side of the clamping block (10) at equal intervals, a clamping rod (11) is slidably connected in each of the plurality of positioning grooves, and one end of the clamping rod (11) extends to the outside of the positioning groove, and a brake assembly for positioning the two positioning assemblies is arranged in the fixed block (9), and the brake assembly is located between the two positioning assemblies; The driving assembly is arranged on the inner wall of the bottom of the main body (1) and is used for driving the two sliders (5) to move and complete the clamping of the special-shaped workpieces.

2. A numerically controlled machine tool provided with a profiled workpiece clamping assembly according to claim 1, characterized in that, A sliding rod (12) is fixedly arranged on the inner wall of one side of each of the plurality of positioning grooves, the plurality of sliding rods (12) are slidably extended into the corresponding clamping rods (11), a spring (13) is sleeved on each of the plurality of sliding rods (12), the two ends of the plurality of springs (13) respectively abut against the inner wall on one side of the corresponding positioning groove and one side of the clamping rod (11), and the clamping rod (11) can be reset after being contacted and clamped through the elastic force of the spring (13).

3. A numerically controlled machine tool provided with a profiled workpiece clamping assembly according to claim 2, characterized in that, A limiting groove (111) is fixedly arranged on the bottom of each of the plurality of clamping rods (11), a plurality of positioning holes (14) are formed in the bottom of the clamping block (10), the plurality of positioning holes (14) are in communication with the corresponding positioning grooves, a positioning bolt is threadedly connected in each of the plurality of positioning holes (14), and the top end of the positioning bolt extends into the corresponding limiting groove (111), so that the clamping rod (11) is prevented from being ejected from the positioning groove due to the elastic force of the spring (13) through the arranged bolt.

4. A numerically controlled machine tool provided with a profiled workpiece clamping assembly according to claim 1, characterized in that, The brake assembly comprises a plurality of extrusion openings communicated with the positioning grooves opened on the top of the clamping block (10), a plurality of extrusion blocks (15) are slidably connected in the plurality of extrusion openings, the top of each of the plurality of extrusion blocks (15) is provided as a slope, the bottom of each of the plurality of extrusion blocks (15) is in contact with the top of the clamping rod (11), the fixing block (9) is provided with an extrusion cavity, the top of each of the plurality of extrusion blocks (15) extends into the inside of the extrusion cavity, a slope moving block (17) is slidably connected in the extrusion cavity, the slope of the slope moving block (17) is in contact with the slope of each of the plurality of extrusion blocks (15), a plurality of moving rods (16) are slidably connected in the inside of the fixing block (9), the number of the plurality of moving rods (16) is four, one end of each of the four moving rods (16) is fixedly connected with one side of the slope moving block (17), the other end of each of the four moving rods (16) is fixedly connected with the same top rod (18), the top rod (18) is threadedly penetrated by a limiting bolt (19), one end of the limiting bolt (19) is rotatably connected with one side of the fixing block (9), the top rod (18) is driven to move by rotating the limiting bolt (19), so as to drive the moving rod (16) and the slope moving block (17) on the moving rod (16) to move, the slope of the slope moving block (17) extrudes the plurality of extrusion blocks (15), the plurality of extrusion blocks (15) are moved in the corresponding extrusion openings after being extruded, and the clamping rod (11) is braked.

5. A numerically controlled machine tool provided with a profiled workpiece clamping assembly according to claim 1, characterized in that, The driving assembly comprises a bidirectional threaded rod (6), the bidirectional threaded rod (6) is rotatably connected with the inner walls of the two sides of the guide rail (4), the bidirectional threaded rod (6) is threadedly penetrated by two sliding blocks (5), and the two sliding blocks (5) are located on the positive and negative threaded sections of the bidirectional threaded rod (6) respectively, the inner walls of the two sides of the guide rail (4) are fixedly provided with limiting rods (7), the limiting rods (7) are slidably penetrated by the two sliding blocks (5), the bottom inner wall of the main body (1) is fixedly provided with a motor (8), and the output end of the motor (8) is fixedly connected with the bidirectional threaded rod (6). The two sliding blocks (5) on the bidirectional threaded rod (6) are close to and away from each other by rotating the bidirectional threaded rod (6) driven by the motor (8), so that the clamping assembly on the two sliding blocks (5) completes clamping of the workpiece.

6. A numerically controlled machine tool provided with a profiled workpiece clamping assembly according to claim 1, characterized in that, The top of the guide rail (4) is directly below the cutting device (2) and is threadedly connected with a storage tray (20) by a threaded rod, so as to limit the height of the workpiece when the workpiece is clamped, and facilitate clamping.

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