Clamp for attaching type profiling moving machine tool

Abstract

The invention discloses a fitting type profiling movable machine tool clamp, and relates to the technical field of clamps, the fitting type profiling movable machine tool clamp comprises a bottom plate, the bottom plate is provided with two groups of corresponding slide rails, the end parts of the two groups of slide rails are provided with first slide blocks in a matched manner, the tops of the first slide blocks on the two sides are provided with mounting seats, and the mounting seats on the two sides are provided with clamping assemblies; through the arrangement of the clamping assembly and the arrangement of the first limiting groove and the second limiting groove which are closed, the limiting screws can only move in the limiting grooves, when the movable blocks rotate, the boundaries of the two ends of the limiting grooves are the movable boundaries of the movable blocks, and the limiting screws can prevent the movable blocks from being disengaged; the movable blocks form a graded rotating shaft through nested sliding strips and sliding grooves, a series-connection profiling self-adaptive chain is achieved, the curvature change of the curved surface of a workpiece can be decomposed step by step, and the movable blocks can rotate according to the shape of the workpiece and adapt to the workpieces of different shapes, so that the machining of different angles of the workpieces is adapted.

Description

Technical Field

[0001] The present invention relates to the technical field of fixtures, and specifically relates to a fixture for a conforming profiling mobile machine tool. Background Technique

[0002] A profiling lathe is a high-precision automated turning equipment in the field of machining with the core technology of "template - drive - profiling". The core design logic stems from the need to break through the processing efficiency and precision of complex curved surfaces and irregular contours in traditional lathe machining. Traditional lathes rely on manual operation or simple numerical control programming to achieve machining of regular trajectories such as straight lines and arcs, while a profiling lathe realizes the efficient and precise machining of workpieces with complex curved surfaces, asymmetric contours, and irregular structures by introducing a mechanical profiling system or digital profiling technology, which converts the pre-designed three-dimensional template contour (such as a model, template, or CAD data) into the tool motion trajectory. In the practical application of a profiling lathe, it plays a crucial role in ensuring product quality and improving production efficiency. As a key component connecting the workpiece and the machine tool, the performance of the fixture directly affects the positioning accuracy of the workpiece, the clamping stability, and the final machining quality.

[0003] Traditional fixtures are often optimized for workpieces with specific shapes or sizes during design. Their clamping structures are fixed and it is difficult to flexibly adjust according to the actual shape of the workpiece. When facing workpieces with complex, irregular, or special curved surface structures, traditional fixtures often cannot provide a stable and conforming clamping effect, resulting in the workpiece being prone to small displacements due to factors such as vibration and cutting force during the machining process, which in turn leads to a decrease in machining accuracy and even the production of defective products. Therefore, the present invention proposes a fixture for a conforming profiling mobile machine tool. Summary of the Invention

[0004] The purpose of the present invention is to provide a fixture for a conforming profiling mobile machine tool to solve the problem proposed in the above background technique that traditional fixtures are often optimized for workpieces with specific shapes or sizes during design, their clamping structures are fixed, it is difficult to flexibly adjust according to the actual shape of the workpiece, and when facing workpieces with complex, irregular, or special curved surface structures, traditional fixtures often cannot provide a stable and conforming clamping effect, resulting in the workpiece being prone to small displacements due to factors such as vibration and cutting force during the machining process, which in turn leads to a decrease in machining accuracy and even the production of defective products.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A fixture for a conforming profiling mobile machine tool, comprising a bottom plate, two groups of corresponding slide rails are arranged on the bottom plate, the ends of the two groups of slide rails are both cooperatively provided with first sliders, mounting seats are arranged on the tops of the two first sliders on both sides, clamping assemblies are mounted on both mounting seats, an auxiliary synchronization assembly is arranged in the middle of the bottom plate, cylinders are fixedly mounted on the front and rear sides of the bottom plate through mounting plates, the two cylinders are arranged in parallel and oppositely, connecting plates are arranged on the different sides of the two mounting seats on both sides, the output ends of the two cylinders are respectively fixedly connected to the connecting plates arranged on the different sides, and supporting plates are evenly distributed at the bottom of the bottom plate.

[0006] Optionally, the auxiliary synchronization assembly includes a gear arranged in the middle of the bottom plate, racks meshing with each other are arranged on the front and rear sides of the gear, one ends of the two racks are both connected with connecting blocks, one sides of the two connecting blocks are slidably connected to the slide rails through second sliders, and the other ends of the two racks are respectively connected to the bottoms of the two mounting seats on both sides.

[0007] Optionally, the mounting seat includes a first mounting part and a second mounting part, the second mounting part is arranged between the two first mounting parts on both sides, a mounting cavity is formed on the second mounting part, a first sliding groove is formed on the arc surface of the mounting cavity, and a first limiting groove is also formed on the arc surface of the mounting cavity.

[0008] Optionally, the port of the first sliding groove is open, and the port of the first limiting groove is closed.

[0009] Optionally, the clamping assembly includes a first movable block, two arc surfaces are arranged on the front side of the first movable block, and second sliding grooves and second limiting grooves with the same structures as the first sliding groove and the first limiting groove are formed on the arc surfaces. A slide bar matched with the first sliding groove is arranged on the rear side surface of the first movable block. A screw hole is penetrated through the first movable block, and a limiting screw for limiting the rotation angle of the first movable block is in threaded connection in the screw hole, and the end of the limiting screw extends into the first limiting groove.

[0010] Optionally, the clamping assembly further includes a second movable block, a third movable block, a fourth movable block and a fifth movable block. The structures of the second movable block, the third movable block, the fourth movable block and the fifth movable block are the same as that of the first movable block. The second movable block is rotationally connected to the second sliding groove on the first movable block through the slide bar arranged on the outer side. The limiting screw on the second movable block is matched with the second limiting groove on the first movable block. The second movable block, the third movable block, the fourth movable block and the fifth movable block are all rotationally connected in multiple levels in the same way.

[0011] Optionally, a plurality of semi-circular jaws are laid on the front arc surface of the fifth movable block.

[0012] Optionally, the rotatable angle range of the first movable block, the second movable block, the third movable block, the fourth movable block and the fifth movable block is 0°-180°.

[0013] The beneficial effects of the present invention are as follows: 1. Through the setting of the clamping assembly in the present invention, by setting the closed first limiting groove and the second limiting groove, the limiting screw can only move along the limiting groove. When the movable block rotates, the two ends of the limiting groove are the moving boundaries of the movable block. The limiting screw can prevent the separation between the movable blocks, and the nested sliding strips and sliding grooves between the movable blocks form a hierarchical rotating shaft to realize a series-connected profiling adaptive chain, which can gradually decompose the curvature change of the workpiece surface. The movable block can rotate according to the shape of the workpiece to adapt to workpieces of different shapes, so as to adapt to the angles of different workpieces for processing.

[0014] 2. In the present invention, the gear of the auxiliary synchronization assembly meshes with the two-side racks. When the left cylinder pushes the left mounting seat to move rightward, the left rack slides along the slide rail through the connecting block and the second slider, and at the same time drives the gear to rotate clockwise. When the gear rotates, the right rack is synchronously driven to move leftward, pushing the right mounting seat to move in the reverse direction. Through the rigid meshing of the gear and the rack, the displacement amounts of the two-side mounting seats always remain absolutely equal, ensuring the synchronous movement of the two-side clamping assemblies and providing the basic synchronism for subsequent profiling clamping. Description of the Drawings

[0015] Figure 1 is a structural schematic diagram of a fitting type profiling mobile machine tool fixture of the present invention; Figure 2 is a structural schematic diagram of another perspective of a fitting type profiling mobile machine tool fixture of the present invention; Figure 3 is a top view of the present invention; Figure 4 is a structural schematic diagram of the clamping assembly in the present invention; Figure 5 is a front view of the jaw in the clamping assembly of the present invention; Figure 6 is a structural schematic diagram of the assembly of the clamping assembly and the mounting seat of the present invention; Figure 7 is a sectional view of the clamping assembly of the present invention.

[0016] The reference numerals in the figures are: 1. Base plate; 2. Slide rail; 3. First slider; 4. Mounting seat; 401. First mounting part; 402. Second mounting part; 403. Mounting cavity; 404. First sliding groove; 405. First limiting groove; 5. Auxiliary synchronization assembly; 501. Gear; 502. Rack; 6. Connecting block; 7. Second slider; 8. Mounting plate; 9. Cylinder; 10. Connecting plate; 11. Support plate; 12. Clamping assembly; 1201. First movable block; 1202. Second movable block; 1203. Third movable block; 1204. Fourth movable block; 1205. Fifth movable block; 1206. Slide bar; 1207. Limit screw; 1208. Screw hole; 1209. Second sliding groove; 1210. Second limiting groove; 1211. Jaw. Detailed implementation manner

[0017] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0018] The following is a description of this in conjunction with the preferred embodiments of the device of the present invention.

[0019] Embodiment 1: As shown in the attached Figure 1 to the attached Figure 7 The present invention provides a fixture for a fitting type profiling moving machine tool, including a bottom plate 1. Two sets of corresponding slide rails 2 are arranged on the bottom plate 1. The ends of the two sets of slide rails 2 are both cooperatively provided with first sliders 3. Mounting seats 4 are arranged on the tops of the two first sliders 3 on both sides. Clamping assemblies 12 are mounted on both mounting seats 4 on both sides. An auxiliary synchronization assembly 5 is arranged in the middle of the bottom plate 1. Cylinders 9 are fixedly mounted on the front and rear sides of the bottom plate 1 through mounting plates 8. The two cylinders 9 are arranged in parallel and in opposite directions. Connecting plates 10 are arranged on the opposite sides of the two mounting seats 4 on both sides. The output ends of the two cylinders 9 are respectively fixedly connected to the connecting plates 10 arranged on the opposite sides. Support plates 11 are evenly distributed on the bottom of the bottom plate 1.

[0020] Furthermore, the auxiliary synchronization assembly 5 includes a gear 501 arranged in the middle of the bottom plate 1. Rack bars 502 meshing with each other are arranged on the front and rear sides of the gear 501. One ends of the two rack bars 502 are both connected with a connecting block 6. One sides of the two connecting blocks 6 are slidably connected to the slide rails 2 through second sliders 7. The other ends of the two rack bars 502 are respectively connected to the bottoms of the two mounting seats 4 on both sides.

[0021] As can be seen from the above, the front and rear cylinders 9 respectively push the two mounting seats 4 on both sides to move in the opposite direction along the slide rails 2 through the connecting plates 10. One end of the rack bar 502 moves synchronously with the mounting seat 4. The other end is slidably connected to the slide rails 2 through the connecting block 6 and the second slider 7, forming a "double thrust - single meshing" transmission chain. When one rack bar 502 generates displacement due to the thrust of the cylinder 9, the gear 501 drives the other rack bar 502 to move synchronously in the opposite direction, ensuring that the displacement amounts of the two mounting seats 4 on both sides are absolutely equal, thereby driving the clamping assemblies 12 on both sides to move synchronously, meeting the stringent requirements for clamping synchronization in profiling machining.

[0022] Embodiment 2: As shown in the attached Figure 4 to the attached Figure 7 As shown, this embodiment is basically the same as the previous embodiment, except that the mounting base 4 includes a first mounting portion 401 and a second mounting portion 402. The second mounting portion 402 is disposed between the two first mounting portions 401 on both sides. An installation cavity 403 is formed on the second mounting portion 402. A first sliding groove 404 is formed on the arc surface of the installation cavity 403. A first limiting groove 405 is also formed on the arc surface of the installation cavity 403. The port of the first sliding groove 404 is open, and the port of the first limiting groove 405 is closed.

[0023] Furthermore, the clamping assembly 12 includes a first movable block 1201. Two arc surfaces are provided on the front side of the first movable block 1201, and a second sliding groove 1209 and a second limiting groove 1210 with the same structure as the first sliding groove 404 and the first limiting groove 405 are formed on the arc surfaces. A sliding strip 1206 that cooperates with the first sliding groove 404 is provided on the rear side surface of the first movable block 1201. A screw hole 1208 penetrates through the first movable block 1201. A limiting screw 1207 for restricting the rotation angle of the first movable block 1201 is threadedly connected in the screw hole 1208. The end of the limiting screw 1207 extends into the first limiting groove 405.

[0024] The clamping assembly 12 further includes a second movable block 1202, a third movable block 1203, a fourth movable block 1204, and a fifth movable block 1205. The structures of the second movable block 1202, the third movable block 1203, the fourth movable block 1204, and the fifth movable block 1205 are the same as that of the first movable block 1201. The second movable block 1202 is rotationally connected to the second sliding groove 1209 on the first movable block 1201 through the sliding strip 1206 provided on the outside. The limiting screw 1207 on the second movable block 1202 cooperates with the second limiting groove 1210 on the first movable block 1201. The second movable block 1202, the third movable block 1203, the fourth movable block 1204, and the fifth movable block 1205 are all rotationally connected in multiple levels in the same manner.

[0025] Specifically, by providing the closed first limiting groove 405 and the second limiting groove 1210, the limiting screw 1207 can only move along the limiting groove. When the movable block rotates, the two ends of the limiting groove are the movement boundaries of the movable block, and the limiting screw 1207 can prevent the separation between the movable blocks.

[0026] A plurality of semi-circular jaws 1211 are paved on the front arc surface of the fifth movable block 1205.

[0027] The rotatable angle ranges of the first movable block 1201, the second movable block 1202, the third movable block 1203, the fourth movable block 1204, and the fifth movable block 1205 are 0° - 180°.

[0028] As can be seen from the above, when the air cylinder 9 pushes the mounting seat 4 to translate along the slide rail 2, driving the clamping assembly 12 as a whole to approach the workpiece, after the jaws 1211 of the fifth movable block 1205 contact the curved surface of the workpiece, a reverse acting force is generated and transmitted step by step to the previous movable blocks. The jaws 1211 are extruded by the curved surface and rotate around the second sliding groove 1209 of the fourth movable block 1204 through the slide bar 1206 on the outside of the fifth movable block 1205. At the same time, the limit screw 1207 on the fifth movable block 1205 slides in the second limit groove 1210 in the fourth movable block 1204, and the two end ports of the second limit groove 1210 are the movement boundaries of the fifth movable block 1205. The limit screw 1207 is provided to prevent the fifth movable block 1205 from disengaging from the fourth movable block 1204. The fourth movable block 1204 rotates due to the reaction force of the fifth movable block 1205, and its rotation angle is restricted by the second limit groove 1210 of the third movable block 1203, and so on to the first movable block 1201. From the fifth movable block 1205 to the first movable block 1201, a rotational degree of freedom is formed step by step through the cooperation of the slide bar 1206 and the second sliding groove 1209, so that each movable block forms an independent rotation axis. After the multi-stage movable blocks are connected in series, a profiling adaptive chain is formed to adapt to complex curved surfaces. When the workpiece is clamped by the clamping assemblies 12 on both sides by the push of the air cylinder 9, the movable blocks can rotate according to the shape of the workpiece, adapt to workpieces of different shapes, and thus adapt to the angles of different workpieces for processing.

[0029] During use, when the machine tool control system is started, two sets of cylinders 9 arranged in parallel and in opposite directions start synchronously. The output ends thereof respectively push the mounting seats 4 on both sides to translate in the opposite direction along the slide rails 2 through the connecting plates 10. During this process, the gear 501 of the auxiliary synchronization assembly 5 in the middle of the bottom plate 1 meshes with the racks 502 on both sides to form a meshing drive. When the left cylinder 9 pushes the left mounting seat 4 to translate to the right, the left rack 502 slides along the slide rail 2 through the connecting block 6 and the second slider 7, and at the same time drives the gear 501 to rotate clockwise. When the gear 501 rotates, the right rack 502 is synchronously driven to translate to the left, pushing the right mounting seat 4 to move in the opposite direction. Through the rigid meshing of the gear 501 and the rack 502, the displacement amounts of the mounting seats 4 on both sides always remain absolutely equal, ensuring the synchronous movement of the clamping assemblies 12 on both sides, providing the basic synchronism for subsequent profiling clamping. When the clamping assemblies 12 on both sides move to both sides of the workpiece along with the mounting seats 4, the semi-circular jaws 1211 laid on the front arc surface of the fifth movable block 1205 first contact the surface of the workpiece. Due to the irregularity of the workpiece curved surface, the jaws 1211 are extruded by the curved surface to generate a reverse acting force. The reverse acting force is transmitted through the slide bar 1206 on the outside of the fifth movable block 1205 to the second sliding groove 1209 of the fourth movable block 1204, causing the fifth movable block 1205 to rotate around this groove. The rotation angle thereof is restricted by the second limiting groove 1210 of the fourth movable block 1204. The fourth movable block 1204 rotates due to the reaction force of the fifth movable block 1205, and the rotation angle thereof is restricted by the second limiting groove 1210 of the third movable block 1203. In this way, it is transmitted step by step to the first movable block 1201, forming a rotation degree-of-freedom chain from the fifth movable block 1205 to the first movable block 1201. Each movable block forms an independent rotation axis. After the multi-stage movable blocks are connected in series, a profiling adaptive chain is formed to adapt to complex curved surfaces. Through the continuous pushing of the cylinder 9, the movable blocks of the clamping assemblies 12 on both sides rotate step by step according to the shape of the workpiece curved surface, and finally the jaws 1211 completely fit the surface of the workpiece, realizing profiling clamping.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for a conforming profiling mobile machine tool, characterized in that: It includes a bottom plate (1), on which two groups of corresponding slide rails (2) are provided. At the ends of the two groups of slide rails (2), first sliders (3) are respectively arranged in a matching manner. At the tops of the two first sliders (3) on both sides, mounting seats (4) are provided. Clamping components (12) are installed on the two mounting seats (4) on both sides. An auxiliary synchronization component (5) is arranged in the middle of the bottom plate (1). Cylinders (9) are fixedly installed on the front and rear sides of the bottom plate (1) through mounting plates (8). The two cylinders (9) are arranged in parallel and in opposite directions. Connecting plates (10) are arranged on the opposite sides of the two mounting seats (4). The output ends of the two cylinders (9) are fixedly connected to the connecting plates (10) arranged on the opposite sides respectively. Supporting plates (11) are evenly distributed at the bottom of the bottom plate (1). The auxiliary synchronization component (5) includes a gear (501) arranged in the middle of the bottom plate (1). Rack bars (502) meshing with each other are arranged on the front and rear sides of the gear (501). One ends of the two rack bars (502) are respectively connected with connecting blocks (6). One sides of the two connecting blocks (6) are slidably connected to the slide rails (2) through second sliders (7). The other ends of the two rack bars (502) are respectively connected to the bottoms of the two mounting seats (4) on both sides.

2. The fixture for a conforming profiling mobile machine tool according to claim 1, characterized in that: The mounting seat (4) includes a first mounting part (401) and a second mounting part (402). The second mounting part (402) is arranged between the two first mounting parts (401) on both sides. An installation cavity (403) is opened on the second mounting part (402). A first sliding groove (404) is opened on the arc surface of the installation cavity (403). A first limiting groove (405) is also opened on the arc surface of the installation cavity (403).

3. The fixture for the conforming profiling mobile machine tool according to claim 2, characterized in that: The port of the first sliding groove (404) is open, and the port of the first limiting groove (405) is closed.

4. A fixture for a conforming profiling mobile machine tool according to claim 1, characterized in that: The clamping component (12) includes a first movable block (1201). Two arc surfaces are arranged on the front side of the first movable block (1201), and a second sliding groove (1209) and a second limiting groove (1210) with the same structure as the first sliding groove (404) and the first limiting groove (405) are opened on the arc surfaces. A slide bar (1206) matching with the first sliding groove (404) is arranged on the rear side of the first movable block (1201).

5. The fixture for a conforming profiling mobile machine tool according to claim 4, characterized in that: A screw hole (1208) runs through the first movable block (1201). A limiting screw (1207) for limiting the rotation angle of the first movable block (1201) is threadedly connected in the screw hole (1208). The end of the limiting screw (1207) extends into the first limiting groove (405).

6. The fixture for a conforming profiling mobile machine tool according to claim 4, characterized in that: The clamping assembly (12) further includes a second movable block (1202), a third movable block (1203), a fourth movable block (1204) and a fifth movable block (1205). The structures of the second movable block (1202), the third movable block (1203), the fourth movable block (1204) and the fifth movable block (1205) are the same as that of the first movable block (1201). The second movable block (1202) is rotationally connected to the second sliding groove (1209) on the first movable block (1201) through a sliding bar (1206) provided on the outer side. The limit screw (1207) on the second movable block (1202) cooperates with the second limit groove (1210) on the first movable block (1201).

7. The fixture for a conforming profiling mobile machine tool according to claim 6, wherein: The second movable block (1202), the third movable block (1203), the fourth movable block (1204) and the fifth movable block (1205) are all rotationally connected in multiple levels in the same manner.

8. A fixture for a conforming profiling mobile machine tool according to claim 6, characterized in that: A number of semi-circular jaws (1211) are laid on the front arc surface of the fifth movable block (1205).

9. The fixture for a conforming profiling mobile machine tool according to claim 6, wherein: The rotatable angle ranges of the first movable block (1201), the second movable block (1202), the third movable block (1203), the fourth movable block (1204) and the fifth movable block (1205) are 0° - 180°.

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