A cold-drawn section steel fixing and clamping device for the production of machine tool guide rails

Abstract

The present invention relates to the technical field of cold drawing, and discloses a cold-drawn section steel fixing and clamping device for the production of a machine tool guide rail, including a clamping device body and a cold drawing die for loading the machine tool guide rail body. A steel tip body is fixedly arranged on one side of the machine tool guide rail body away from the cold drawing die. In the present invention, the steel tip body on the machine tool guide rail body is directly inserted into the clamping ring. At the same time, under the mutual cooperation of the clamping assembly and the adjusting assembly, multiple clamping block bodies can be made to contact the steel tip body. At this time, the machine tool guide rail body can be cold-drawn by starting the clamping device body. Under the mutual cooperation of the pulling force and the clamping assembly, multiple clamping block bodies can automatically clamp the steel tip body on the machine tool guide rail body, and the clamping force increases with the increase of the cold drawing force. After converting the cold drawing force into the clamping force, it can ensure that the steel tip is stably clamped during the cold drawing process, and prevent the steel tip from sliding or falling off during the force application process.

Description

Technical Field

[0001] The present invention relates to the technical field of cold drawing, and particularly to a fixing and clamping device for cold-drawn steel profiles used in the production of machine tool guide rails. Background Art

[0002] Cold drawing is carried out under normal temperature conditions, with a tensile stress exceeding the yield point strength of the original steel, forcibly stretching the steel to cause plastic deformation of the steel in order to increase the yield point strength of the steel and save steel;

[0003] Parts that support and guide moving components along a certain trajectory are called guide rail pairs, often simply referred to as guide rails. The movement trajectories of moving parts are straight lines, circles or curves. Rolling circular guide rails can be classified into rolling thrust bearings. Curved guide rails are rarely used in machinery. Guide rails are very important components in machines, especially in machine tools. The machining accuracy of machine tools is directly related to the accuracy of guide rails. In precision machine tools for small-batch production, the machining workload of guide rails accounts for about 40% of the entire machining workload of the machine tool. Moreover, once the guide rails are damaged, they are very difficult to repair;

[0004] In the patent application with the application publication number CN210146666U, it includes a steel drawing vehicle body. An installation plate is fixedly connected to the upper end of the steel drawing vehicle body. Two pairs of cylinders are fixedly connected to the installation plate. Clamping plates are fixedly connected to the telescopic ends of the two pairs of cylinders. A through hole is drilled in the center of the installation plate. A threaded sleeve is inserted into the through hole. A fixed disk is fixedly connected to the end of the threaded sleeve close to the cylinder. A motor is provided on the side of the installation plate away from the cylinder. A fixed seat is fixedly connected between the motor and the steel drawing vehicle body. A threaded rod is fixedly connected to the power output end of the motor. The threaded rod is threadedly connected to the threaded sleeve. Two pairs of pulleys are connected to the lower end of the steel drawing vehicle body. A workbench is provided below the steel drawing vehicle body. Two pairs of slide rails matching the pulleys are fixedly connected to the workbench, which can conveniently clamp workpieces of different sizes and facilitate the disassembly of workpieces.

[0005] In the prior art including the above patents, during the production of machine tool guide rails by existing fixed jigs, a clamping device is required to clamp the steel tip part of the guide rail. Then, with the cooperation of a cold drawing die, the machine tool guide rail can be cold drawn and shaped. Existing clamping devices usually require a large amount of electric energy to drive the clamping jaws. Clamping devices relying on electric drive often involve complex power systems and control logics, which increase the complexity of the equipment. And in some extreme environmental conditions, such as high temperature, humid or dusty environments, the clamping devices driven by electricity will face the risk of performance degradation or failure, so there is a risk of loosening. Summary of the Invention

[0006] The problem to be solved by the present invention is that there is a risk of loosening in the existing clamping devices for cold-drawn steel profiles.

[0007] To solve the above technical problems, the technical solution of the present invention is: a cold-drawn section steel fixing and clamping device for the production of a machine tool guide rail, including a clamping device body and a cold-drawing die for loading the machine tool guide rail body. A steel tip body is fixedly arranged on one side of the machine tool guide rail body away from the cold-drawing die. A clamping assembly is arranged inside the clamping device body, and an adjusting assembly is arranged on one side of the clamping assembly inside the clamping device body;

[0008] The clamping assembly includes a clamping ring fixed to the inner wall of the clamping device body. A plurality of pairs of inclined sliding strips are fixedly arranged on the inner wall of the clamping ring. Two side guide pieces are slidably arranged on each pair of inclined sliding strips. A side fixing block is fixedly arranged on one side of the two side guide pieces. A clamping block body is fixedly arranged on the side of the side fixing block away from the side guide piece. An insertion rod is fixedly arranged between the two side fixing blocks on the clamping block body, and the insertion rod is slidably connected to the inner wall of the clamping ring. A return spring is sleeved on the outer arc wall of the insertion rod;

[0009] A plurality of cold-drawing clamping grooves are formed on the steel tip body.

[0010] Preferably, the plurality of pairs of inclined sliding strips are distributed in a circular array on the inner wall of the clamping ring, and an inclined sliding groove matching the side guide piece is formed on each inclined sliding strip.

[0011] Preferably, a limiting ring is fixedly arranged on the outer arc wall of each insertion rod, and a plurality of limiting cylinders slidably connected to the plurality of insertion rods are fixedly arranged on the inner wall of the clamping ring.

[0012] Preferably, a central moving groove matching the steel tip body is formed on the clamping ring, and a plurality of claw moving grooves matching the plurality of clamping block bodies are formed on the clamping ring, and the plurality of claw moving grooves are all communicated with the central moving groove.

[0013] Preferably, the plurality of cold-drawing clamping grooves are distributed in a circular array on the outer wall of the steel tip body. Each cold-drawing clamping groove includes a first friction groove formed on the steel tip body, and each cold-drawing clamping groove includes two second friction grooves respectively formed on both sides of the first friction groove.

[0014] Preferably, the adjusting assembly includes guide columns respectively fixed on the plurality of clamping block bodies. An adjusting disc is rotatably arranged on the inner wall of the clamping ring, and the plurality of guide columns are all slidably connected to the adjusting disc.

[0015] Preferably, a plurality of arc grooves matching the plurality of guide columns are formed on the adjusting disc. A handle is fixedly arranged on the outer wall of the adjusting disc. An activity through groove matching the handle is formed on the clamping ring, and the activity through groove penetrates from the inner wall of the clamping ring to the outer wall of the clamping device body.

[0016] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0017] (1) In the present invention, the steel tip body on the machine tool guide rail body is directly inserted into the inside of the clamping ring. At the same time, under the mutual cooperation of the clamping assembly and the adjusting assembly, multiple clamping block bodies can be made to contact the steel tip body. At this time, the cold drawing of the machine tool guide rail body can be carried out by starting the clamping device body. Under the mutual cooperation of the pulling force and the clamping assembly, multiple clamping block bodies can automatically clamp the steel tip body on the machine tool guide rail body. The clamping force increases with the increase of the cold drawing force. After converting the cold drawing force into the clamping force, it can ensure that the steel tip is stably clamped during the cold drawing process, avoiding the sliding or falling off of the steel tip during the force application process, thus ensuring the smooth progress of the cold drawing process. And the stable clamping and uniform force distribution can reduce the failures and downtime during the cold drawing process, thereby improving the production efficiency;

[0018] (2) In the present invention, by rotating the handle, and at the same time under the cooperation of the adjusting assembly and the clamping assembly, multiple clamping block bodies can be gradually separated. At this time, the steel tip body on the machine tool guide rail body can be inserted between the multiple clamping block bodies, which can play a role in adapting to steel bar bodies of different sizes. The clamping device can adapt to steel bar bodies of different sizes, which means that the same cold drawing machine can process steel materials of multiple specifications without frequently replacing the clamping device or adjusting the machine settings. And this helps to reduce the operation difficulty and operation time, improve the overall production efficiency, which helps to maximize the utilization rate of the equipment, reduce the idle time of the equipment, and improve the return on investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the connection structure between the machine tool guide rail and the clamping device of the present invention;

[0021] Figure 3 is a schematic cross-sectional view of the clamping device body of the present invention;

[0022] Figure 4 is an exploded view of the clamping device of the present invention;

[0023] Figure 5 is of the present invention Figure 4 partial enlarged view of A therein;

[0024] Figure 6 is a schematic diagram of the connection structure between the clamping assembly and the adjusting assembly of the present invention;

[0025] Figure 7 is of the present invention Figure 6 partial enlarged view of B therein;

[0026] Figure 8 Schematic structural diagram of the adjustment component of the present invention;

[0027] Figure 9 Schematic cross-sectional structural diagram of the steel tip body of the present invention;

[0028] Figure 10 Schematic structural diagram of the adjustment disk of the present invention.

[0029] In the figure: 1. Clamping equipment body; 11. Machine tool guide rail body; 12. Cold drawing die; 13. Steel tip body; 14. Cold drawing card slot; 141. First friction slot; 142. Second friction slot;

[0030] 2. Clamping component; 21. Clamping ring; 22. Inclined sliding bar; 23. Side fixing block; 231. Side guiding piece; 24. Clamping block body; 25. Inserting rod; 251. Return spring;

[0031] 3. Adjustment component; 31. Guide post; 32. Adjustment disk; 33. Arc-shaped slot; 34. Handle. Specific embodiments

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0033] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The terms "including" or "comprising" and the like used in the present disclosure mean that the elements or items appearing before this word cover the elements or items listed after this word and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not limited to physical or mechanical connections, and may also include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0034] Such as Figures 1 to 10As shown in the figure, a cold-drawn section steel fixing and clamping device for the production of a machine tool guide rail provided by the present invention includes a clamping device body 1 and a cold-drawing die 12 for loading the machine tool guide rail body 11. A steel tip body 13 is fixedly arranged on one side of the machine tool guide rail body 11 away from the cold-drawing die 12. A clamping component 2 is arranged inside the clamping device body 1, and an adjusting component 3 is arranged on one side of the clamping component 2 inside the clamping device body 1;

[0035] The clamping component 2 includes a clamping ring 21 fixed to the inner wall of the clamping device body 1. A plurality of pairs of inclined sliding strips 22 are fixedly arranged on the inner wall of the clamping ring 21. Two side guiding pieces 231 are slidably arranged on each pair of inclined sliding strips 22. A side fixing block 23 is fixedly arranged on one side of the two side guiding pieces 231. A clamping block body 24 is fixedly arranged on the side of the side fixing block 23 away from the side guiding piece 231. An inserting rod 25 is fixedly arranged between the two side fixing blocks 23 on the clamping block body 24, and the inserting rod 25 is slidably connected with the inner wall of the clamping ring 21. A return spring 251 is sleeved on the arc-shaped outer wall of the inserting rod 25;

[0036] A plurality of cold-drawing clamping grooves 14 are formed on the steel tip body 13;

[0037] The plurality of pairs of inclined sliding strips 22 are annularly and arrayedly distributed on the inner wall of the clamping ring 21. An inclined sliding groove matching the side guiding piece 231 is formed on each inclined sliding strip 22;

[0038] A limiting ring is fixedly arranged on the arc-shaped outer wall of each inserting rod 25, and a plurality of limiting cylinders slidably connected with the plurality of inserting rods 25 are fixedly arranged on the inner wall of the clamping ring 21;

[0039] A central moving groove matching the steel tip body 13 is formed on the clamping ring 21. A plurality of claw moving grooves matching the plurality of clamping block bodies 24 are formed on the clamping ring 21, and the plurality of claw moving grooves are all communicated with the central moving groove;

[0040] The plurality of cold-drawing clamping grooves 14 are annularly and arrayedly distributed on the outer wall of the steel tip body 13. Each cold-drawing clamping groove 14 includes a first friction groove 141 formed on the steel tip body 13. Each cold-drawing clamping groove 14 includes two second friction grooves 142 respectively formed on both sides of the first friction groove 141. Each clamping block body 24 is trapezoidal;

[0041] When cold drawing the machine tool guide rail body 11 is required, the steel tip body 13 fixed on one side of the machine tool guide rail body 11 can be inserted between a plurality of clamping block bodies 24, and one end of the steel tip body 13 can slide along the inclined surfaces of the plurality of clamping block bodies 24. At this time, the plurality of clamping block bodies 24 can be pushed to slide simultaneously on the inner wall of the clamping ring 21. During this process, the insertion rods 25 fixed on each clamping block body 24 can slide on the inner wall of the clamping ring 21, and at the same time, the side guide pieces 231 fixed on the plurality of side fixing blocks 23 can slide inside the inclined sliding strip 22, thereby compressing the return spring 251 fixed between the clamping block body 24 and the clamping ring 21. When the plurality of cold drawing chucks 14 on the steel tip body 13 move to positions matching the plurality of clamping block bodies 24, such as Figure 4 , the outer wall side of the clamping block body 24 can be in contact with the left inner wall of the cold drawing chuck 14. At this time, the plurality of clamping block bodies 24 can move under the elastic force of the plurality of return springs 251 and be engaged into the plurality of cold drawing chucks 14 opened on the steel tip body 13. At this time, by starting the clamping device body 1, the plurality of clamping block bodies 24 can be driven to move to one side, and the contact between the plurality of clamping block bodies 24 and the steel tip body 13 can pull the machine tool guide rail body 11 to move to one side. At this time, the machine tool guide rail body 11 is blocked by the cold drawing die 12, and the plurality of clamping block bodies 24 can move to the other side relative to the clamping device body 1. Since the side guide pieces 231 fixed on the clamping block body 24 slide inside the inclined sliding strip 22, the plurality of clamping block bodies 24 can move towards the central axis direction of the steel tip body 13, and then the plurality of clamping block bodies 24 can be closely attached to the cold drawing chucks 14 of the steel tip body 13. At this time, under the action of the frictional force between the plurality of clamping block bodies 24 and the cold drawing chucks 14, the function of cold drawing the machine tool guide rail body 11 can be achieved. When separating the clamping device body 1 from the steel tip body 13, the cold drawing die 12 can be rotated to drive the steel tip body 13 to rotate. At this time, the plurality of clamping block bodies 24 can slide along the plurality of second friction grooves 142. When one side of the clamping block body 24 is in contact with the arc-shaped outer wall of the steel tip body 13, the cold drawing die 12 can be extracted and disassembled by pulling out the cold drawing die 12.

[0042] The adjusting assembly 3 includes guide columns 31 respectively fixed on a plurality of clamping block bodies 24. An adjusting disc 32 is rotatably arranged on the inner wall of the clamping ring 21, and the plurality of guide columns 31 are all slidably connected to the adjusting disc 32;

[0043] A plurality of arc-shaped grooves 33 matching the plurality of guide columns 31 are formed on the adjusting disc 32. A handle 34 is fixedly arranged on the outer wall of the adjusting disc 32. An activity through groove matching the handle 34 is formed on the clamping ring 21, and the activity through groove penetrates from the inner wall of the clamping ring 21 to the outer wall of the clamping device body 1;

[0044] When the clamping device body 1 needs to adjust the steel tip body 13 with a larger diameter, the handle 34 can be pulled to drive the adjustment disk 32 to rotate around the connection position with the clamping ring 21. At this time, the guide columns 31 respectively fixed on the multiple clamping block bodies 24 can slide inside the multiple arc grooves 33. At the same time, with the cooperation of the clamping assembly 2, the multiple side guide plates 231 can slide inside the inclined slide bar 22, so that the multiple clamping block bodies 24 gradually move away from each other. At this time, the steel tip body 13 with a larger diameter can be inserted into the clamping ring 21, thereby achieving the purpose of assisting the installation of the steel tip body 13 with a larger diameter.

[0045] The working principle and use process of the present invention are as follows: first, the steel tip body 13 fixed on one side of the machine tool guide rail body 11 is inserted between the multiple clamping block bodies 24, and one end of the steel tip body 13 is made to slide along the inclined surfaces of the multiple clamping block bodies 24, and with the cooperation of the adjustment component 3, the multiple clamping block bodies 24 can be pushed and slid on the inner wall of the clamping ring 21 at the same time. In this process, the plug-in rod 25 fixed on each clamping block body 24 can slide on the inner wall of the clamping ring 21, and at the same time, the side guide pieces 231 fixed on the multiple side fixing blocks 23 can slide inside the inclined slide bar 22, and then the return spring 251 fixed between the clamping block body 24 and the clamping ring 21 is compressed. When the multiple cold-drawn slots 14 on the steel tip body 13 move to a position matching the multiple clamping block bodies 24, such as Figure 4 , which can make one side of the outer wall of the clamping block body 24 contact with the left inner wall of the cold-drawn slot 14. At this time, the multiple clamping block bodies 24 can move under the elastic force of the multiple reset springs 251 and be engaged with the multiple cold-drawn slots 14 opened on the steel tip body 13. At this time, by starting the clamping device body 1, the multiple clamping block bodies 24 can be driven to move to one side, and the contact between the multiple clamping block bodies 24 and the steel tip body 13 can pull the machine tool guide rail body 11 to move to one side. At this time, the machine tool guide rail body 11 is blocked by the cold-drawn die 12, which can make the multiple clamping block bodies 24 move relative to the clamping device body 1. The other side moves, and since the side guide piece 231 fixed on the clamping block body 24 slides inside the inclined slide bar 22, the multiple clamping block bodies 24 can be moved toward the central axis direction of the steel tip body 13, and then the steel tip body 13 is automatically clamped. When the clamping device body 1 and the steel tip body 13 are separated, the steel tip body 13 can be driven to rotate by rotating the cold drawing die 12. At this time, the multiple clamping block bodies 24 can slide along the multiple second friction grooves 142. When one side of the clamping block body 24 contacts the arc-shaped outer wall of the steel tip body 13, the cold drawing die 12 can be pulled out and disassembled.

[0046] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be regarded as falling within the protection scope of the present invention.

Claims

1. A cold-drawn section steel fixing and clamping device for the production of a machine tool guide rail, comprising a clamping device body (1) and a cold-drawing die (12) for loading the machine tool guide rail body (11), characterized in that: On one side of the machine tool guide rail body (11) away from the cold drawing die (12), a steel tip body (13) is fixedly arranged. Inside the clamping device body (1), a clamping assembly (2) is arranged, and an adjusting assembly (3) is arranged on one side of the clamping assembly (2) inside the clamping device body (1). The clamping assembly (2) includes a clamping ring (21) fixed to the inner wall of the clamping device body (1). A plurality of pairs of inclined sliding strips (22) are fixedly arranged on the inner wall of the clamping ring (21). Two side guiding pieces (231) are slidably arranged on each pair of inclined sliding strips (22). A side fixing block (23) is fixedly arranged on one side of the two side guiding pieces (231). A clamping block body (24) is fixedly arranged on the side of the side fixing block (23) away from the side guiding piece (231). A plugging rod (25) is fixedly arranged between the two side fixing blocks (23) on the clamping block body (24), and the plugging rod (25) is slidably connected to the inner wall of the clamping ring (21). A return spring (251) is sleeved on the arc-shaped outer wall of the plugging rod (25). A plurality of cold drawing clamping grooves (14) are formed on the steel tip body (13).

2. The cold-drawn section steel fixing and clamping device for machine tool guide rail production according to claim 1, wherein: The plurality of pairs of inclined sliding strips (22) are distributed in a circular array on the inner wall of the clamping ring (21). An inclined sliding groove matching the side guiding piece (231) is formed on each inclined sliding strip (22).

3. The cold-drawn section steel fixing and clamping device for the production of a machine tool guide rail according to claim 1, characterized in that: A limiting ring is fixedly arranged on the arc-shaped outer wall of each plugging rod (25), and a plurality of limiting cylinders slidably connected to the plurality of plugging rods (25) are fixedly arranged on the inner wall of the clamping ring (21).

4. A cold-drawn section steel fixing and clamping device for machine tool guide rail production according to claim 1, characterized in that: A central moving groove matching the steel tip body (13) is formed on the clamping ring (21). A plurality of jaw moving grooves matching the plurality of clamping block bodies (24) are formed on the clamping ring (21), and the plurality of jaw moving grooves are all communicated with the central moving groove.

5. A cold-drawn section steel fixing and clamping device for the production of a machine tool guide rail according to claim 1, characterized in that: The plurality of cold drawing clamping grooves (14) are distributed in a circular array on the outer wall of the steel tip body (13). Each cold drawing clamping groove (14) includes a first friction groove (141) formed on the steel tip body (13). Each cold drawing clamping groove (14) includes two second friction grooves (142) respectively formed on both sides of the first friction groove (141).

6. The cold-drawn section steel fixing and clamping device for machine tool guide rail production according to claim 1, wherein: The adjusting assembly (3) includes guiding columns (31) respectively fixed to the plurality of clamping block bodies (24). An adjusting disc (32) is rotatably arranged on the inner wall of the clamping ring (21), and the plurality of guiding columns (31) are all slidably connected to the adjusting disc (32).

7. A cold-drawn section steel fixing and clamping device for machine tool guide rail production according to claim 6, characterized in that: A plurality of arc-shaped grooves (33) matching the plurality of guiding columns (31) are formed on the adjusting disc (32). A handle (34) is fixedly arranged on the outer wall of the adjusting disc (32). An activity through groove matching the handle (34) is formed on the clamping ring (21), and the activity through groove penetrates from the inner wall of the clamping ring (21) to the outer wall of the clamping device body (1).

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