Multifunctional clamping device

Abstract

The utility model relates to a multifunctional clamping device which is particularly suitable for drilling machining of a drilling machine. The device comprises a fixed seat, a clamping piece, a jacking piece, a driving mechanism, a mounting piece and the like, workpieces in different shapes (such as a round shape and a square shape) can be stably clamped, and efficient and accurate positioning is achieved. The clamping piece can firmly clamp the workpiece in the machining process through the structures such as the sliding block, the supporting plate, the clamping roller and the check ring, the workpiece is prevented from moving or sliding, and the punching precision is improved. The jacking piece is matched with the threads for adjustment, it is guaranteed that the workpiece can be smoothly switched among a plurality of punching points, manual adjustment is reduced, and the working efficiency is improved. The driving mechanism is driven by a two-way lead screw and a motor, accurate and symmetrical movement of the clamping piece is achieved, the clamping requirements of workpieces of different sizes are met, and the problems that a clamp in a traditional device is not stable in fixing and not firm in clamping are solved. The installation piece ensures that the clamp is firmly fixed on a drilling machine workbench through combination of a clamping block, a screw head and a nut.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of clamp, concretely relates to a multifunctional clamping device. BACKGROUND

[0002] With the continuous development of automatic processing technology, various processing equipment puts forward higher requirements for the clamping and positioning accuracy of workpieces. In the punching, milling and other processing processes, stable clamping and accurate positioning of the workpiece are crucial, and the traditional manual fixing and adjusting mode often has problems such as complicated operation, low efficiency and insufficient processing accuracy. Especially when punching different shapes and sizes of workpieces, it is usually necessary to manually adjust the position of the workpiece for many times, which consumes a lot of time and manpower, resulting in low production efficiency.

[0003] Although the common clamping device in the market can meet the clamping demand to some extent, most of the devices have the following shortcomings: first, the existing clamping device often relies on manual intervention in the clamping and fixing process of the workpiece, especially when changing different types of workpieces, the clamping parts need to be adjusted frequently, resulting in low efficiency; second, the clamping force of part of the clamping device cannot be uniformly distributed, which is easy to cause unstable clamping of the workpiece and affect the processing accuracy; finally, the adaptability of the existing device to complex shaped workpieces is poor, especially in the clamping and positioning process of different workpiece shapes such as circular and square shapes, different clamps or adjusting devices are usually needed, which increases the complexity and cost of use. SUMMARY

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a multifunctional clamping device which can automatically adapt to the processing needs of workpieces of different shapes, realize rapid clamping and accurate positioning, reduce manual intervention, improve processing efficiency, and has good practical value.

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

[0006] A multifunctional clamping device, comprising a drilling machine workbench and a clamp fixed on the drilling machine workbench, the clamp comprising a fixed seat, the upper surface of the fixed seat being provided with two left and right clamping pieces, and the upper surface of the fixed seat being provided with a driving mechanism for driving the two clamping pieces to move relative to each other, the fixed seat being fixed on the drilling machine workbench through a mounting piece;

[0007] The clamping piece comprises a support plate, two front and rear supports are fixed on one side of the center of the support plate, a vertical clamping roller is installed on the support, the clamping roller is fixed with an outwardly protruding retainer ring near the lower end position, and a tightening piece for locking the workpiece is installed on the middle part of the support plate.

[0008] Further, the clamping piece further comprises a sliding block slidingly installed on the fixed seat, and the side, away from the clamping roller, of the supporting plate is fixedly provided with a mounting plate, and the mounting plate is fixed on the sliding block through a screw.

[0009] Further, the clamping piece further comprises a sliding block slidingly installed on the fixed seat, and the side, away from the clamping roller, of the supporting plate is fixedly provided with a mounting plate, and the mounting plate is fixed on the sliding block through a screw.

[0010] Further, the clamping piece further comprises a sliding block slidingly installed on the fixed seat, and the side, away from the clamping roller, of the supporting plate is fixedly provided with a mounting plate, and the mounting plate is fixed on the sliding block through a screw.

[0011] Further, the clamping piece further comprises a sliding block slidingly installed on the fixed seat, and the side, away from the clamping roller, of the supporting plate is fixedly provided with a mounting plate, and the mounting plate is fixed on the sliding block through a screw.

[0012] Further, the clamping piece further comprises a sliding block slidingly installed on the fixed seat, and the side, away from the clamping roller, of the supporting plate is fixedly provided with a mounting plate, and the mounting plate is fixed on the sliding block through a screw.

[0013] Compared with the prior art, the clamping piece has the advantages that:

[0014] Firstly, the clamping piece comprising a sliding block, a supporting plate, a clamping roller, a check ring, a pressing block and a pressing screw can stably clamp and effectively position workpieces of different shapes (including circular and square shapes). The clamping roller is covered with polyurethane material, which can avoid damaging the surface of the workpiece while ensuring the clamping force. The check ring structure effectively prevents the workpiece from slipping horizontally during clamping. The V-shaped groove structure on the side of the pressing block can accurately align the edge of the workpiece, so that the workpiece is accurately positioned and the punching precision is effectively improved. This structure solves the problems of loose clamping and inaccurate positioning in traditional clamps, and improves the processing consistency.

[0015] Secondly, the pressing piece penetrating through the supporting plate realizes the limiting control of the workpiece in the longitudinal or rotational direction. When the workpiece needs to be adjusted in position between multiple punching points, the operator only needs to loosen the pressing screw, and cooperates with the sliding of the clamping piece or the rotation of the workpiece to complete the punching point switching, without the need to repeatedly disassemble or move the workpiece, thereby improving the processing efficiency and reducing the operation labor intensity, and avoiding the problems of frequent manual adjustment and alignment in the traditional clamping process.

[0016] Again, by setting the driving mechanism fixed on both sides of the fixed seat, the driving motor drives the bidirectional screw rod to rotate, so that the two sliders drive the clamping pieces to move synchronously inward or outward. The structure ensures the symmetry of the movement of the clamping pieces, avoids the workpiece deviation caused by one-sided clamping, and can quickly adapt to the clamping requirements of workpieces of different widths, thereby improving the clamping efficiency and the application range of the equipment. The scheme effectively solves the technical problems of single fixture structure and poor adaptability in the background art.

[0017] In addition, by setting the guide groove on the fixed seat and the mounting block on the front and rear sides thereof, and cooperating with the structure of the clamping block, screw head and nut in the mounting piece, the fixture can be quickly positioned and firmly installed on the drill bed workbench, thereby enhancing the stability and universality of the overall structure of the fixture. The fixing mode ensures that the device will not displace due to vibration during drilling, ensures the continuity and precision of the machining process, and overcomes the problems of traditional fixture fixing mode, such as complexity and poor firmness. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 2 is a schematic view of the fixture in cooperation with the drill bed workbench of the utility model;

[0019] Figure 2 Fig. 3 is a schematic view of the overall structure of the fixture of the utility model;

[0020] Figure 3 Fig. 4 is a schematic view of the clamping piece of the utility model;

[0021] Figure 4 Fig. 5 is a schematic view of the tightening piece of the utility model;

[0022] Figure 5 Fig. 6 is a schematic view of the fixed seat of the utility model;

[0023] Figure 6 Fig. 7 is a schematic view of the driving mechanism of the utility model.

[0024] In the drawings, the components represented by each reference numeral are listed as follows:

[0025] 1, fixed seat; 11, guide groove; 12, mounting block; 13, U-shaped groove; 2, clamping piece; 21, slider; 22, mounting plate; 23, support plate; 24, bracket; 25, clamping roller; 26, check ring; 3, tightening piece; 31, V-shaped groove; 32, tightening block; 33, tightening screw; 34, handle; 4, driving mechanism; 41, driving motor; 42, fixed plate; 43, bidirectional screw rod; 5, mounting piece; 51, clamping block; 52, screw head; 53, nut. DETAILED DESCRIPTION

[0026] In order to make the purpose and advantages of the utility model more clearly, the utility model is specifically described below in combination with examples. It should be understood that the following text is merely used to describe one or several specific embodiments of the utility model and does not strictly limit the protection scope of the utility model specifically requested.

[0027] Embodiment 1

[0028] As Figure 1 shown, a multifunctional clamping device comprises a drilling machine workbench and a clamp fixed on the drilling machine workbench, the clamp comprises a fixed seat 1, the upper surface of the fixed seat 1 is provided with two left and right clamping pieces 2, and the upper surface of the fixed seat 1 is provided with a driving mechanism 4 for driving the relative movement of the two clamping pieces 2, and the fixed seat 1 is fixed on the drilling machine workbench through a mounting piece 5. The fixed seat 1 is made of high-strength aluminum alloy material and has good strength and wear resistance to ensure stability and durability during long-term work; the size of the fixed seat 1 is 300mm*250mm*50mm, the surface is subjected to sand blasting treatment, and has high corrosion resistance; the mounting piece 5 is made of steel material to ensure the firmness of the fixing piece, and the size is 150mm*60mm*30mm, the surface is subjected to anti-rust treatment by spraying to prevent corrosion from affecting the stability of work.

[0029] As Figure 2 and Figure 3 shown, the clamping piece 2 comprises a support plate 23, two front and rear supports 24 are fixed on one side of the center of the support plate 23, vertical clamping rollers 25 are installed on the supports 24, the clamping rollers 25 are fixed with outwardly protruding retaining rings 26 near the lower end position, and a jacking piece 3 for locking the workpiece is installed at the middle part of the support plate 23. The support plate 23 is made of high-strength steel material and has a size of 250mm*100mm*20mm, and has good carrying capacity. The supports 24 are fixed on the support plate 23 by high-strength bolts, and the size of the supports 24 is 50mm*50mm*10mm. The outer surface of the clamping roller 25 is coated with polyurethane material, which has good wear resistance and elasticity to meet the clamping needs of different workpieces. The retaining ring 26 is made of stainless steel material and has high corrosion resistance and strength, and the size is 30mm*5mm, which can effectively prevent the workpiece from shifting. The jacking piece 3 is located at the center position of the support plate 23 and is made of standard high-strength alloy steel material with a size of 120mm*20mm, which can ensure that it will not fail due to external force during clamping.

[0030] As Figure 3As shown, the clamping member 2 further comprises a sliding block 21 slidingly mounted on the fixed seat 1, and an installation plate 22 fixed on the side of the support plate 23 away from the clamping roller 25, the installation plate 22 being fixed on the sliding block 21 by screws. The sliding block 21 is made of high-quality aluminum alloy material, has relatively light weight and high strength, and has a size of 100mm x 50mm x 15mm. The installation plate 22 is connected with the sliding block 21 by M6 bolts, has a size of 80mm x 40mm, and is made of heat-treated steel material to ensure that it is not easy to deform during long-term use.

[0031] As shown in Figure 4 , the jacking member 3 comprises a jacking screw 33 threaded through the support plate 23, the jacking screw 33 having a handle 34 fixed at one end thereof and a jacking block 32 mounted at the other end thereof, and the jacking block 32 having a V-shaped groove 31 formed on the side surface thereof. The jacking screw 33 is made of high-strength steel material, has an outer diameter of 12mm and a length of 100mm, and is subjected to hardening treatment to have a surface hardness of HRC50-60, so as to ensure that it is not easy to be damaged during high-strength clamping operation. The handle 34 is made of aluminum alloy material and has a diameter of 40mm, so as to facilitate manual adjustment by an operator. The V-shaped groove 31 of the jacking block 32 can better lock the workpiece, and has an angle of 45°, which is suitable for workpieces of various sizes.

[0032] As shown in Figure 5 , the upper surface of the fixed seat 1 is provided with a guide groove 11, and the front and rear sides of the fixed seat 1 are both fixed with left and right installation blocks 12, and the side surface of the installation block 12 is provided with a U-shaped groove 13. The guide groove 11 is made of precise machining process and has a size of 100mm x 15mm, which can ensure smooth running of the bidirectional screw rod 43, reduce friction, and improve mechanical operation efficiency. The U-shaped groove 13 of the installation block 12 is designed to facilitate installation and fixation of the clamping block 51, and has an inner width of 15mm and an inner height of 10mm, which conforms to the standard size of conventional equipment accessories.

[0033] As shown in Figure 5 , the installation member 5 comprises a clamping block 51 clamped on the workbench of the drilling machine, a screw head 52 fixed at the upper end of the clamping block 51, and a nut 53 fixed at the upper end of the screw head 52 through the U-shaped groove 13. The clamping block 51 is made of high-hardness alloy steel and has a size of 80mm x 30mm x 20mm, which ensures that it is not easy to deform or be damaged during installation. The screw head 52 has an outer diameter of 8mm and is made of high-strength steel material, which is subjected to heat treatment to have a surface hardness of HRC45, so as to ensure reliability during long-term use. The nut 53 is a standard hexagonal nut, has a size of M8, and is made of stainless steel to prevent corrosion from affecting the clamping effect.

[0034] As shown in Figure 6As shown, the driving mechanism 4 includes a fixed plate 42 fixed on both sides of the fixed base 1 and a bidirectional screw rod 43 arranged in the guide groove 11, both ends of the bidirectional screw rod 43 are rotatably installed on the two fixed plates 42 respectively, and the bidirectional screw rod 43 is threaded through the two sliding blocks 21, and the outside of one of the fixed plates 42 is fixed with a driving motor 41 for driving the bidirectional screw rod 43 to rotate. The bidirectional screw rod 43 is made of C45 steel, with an outer diameter of 12 mm and a length of 200 mm, having strong tensile strength and wear resistance. The driving motor 41 is a direct current motor with a power of 200 W and a rotating speed of 3000 RPM, ensuring sufficient power to drive the bidirectional screw rod 43 for precise adjustment. The fixed plate 42 is made of aluminum alloy material with a size of 100 mm x 50 mm x 10 mm, which is light in weight and durable, and can effectively support the operation of the entire driving system.

[0035] Example 2: Improvement of clamping member structure and workpiece clamping precision

[0036] In this embodiment, the clamping member is composed of a support plate 23, a clamping roller 25, a retaining ring 26, a sliding block 21, a tightening block 32 and other components. The support plate 23 is made of high-strength steel with a size of 250 mm x 100 mm x 20 mm, and the support 24 is fixed to one side of the support plate 23, with a size of 50 mm x 50 mm x 10 mm, to ensure the overall stability of the clamping member. The clamping roller 25 is coated with polyurethane material, with a diameter of 30 mm and a length of 50 mm, effectively reducing the scratches on the workpiece surface and providing greater friction to ensure clamping stability. The retaining ring 26 is made of stainless steel with a size of 30 mm x 5 mm, which is used to prevent displacement of the workpiece during clamping to ensure machining precision.

[0037] Working principle: When clamping the workpiece, the clamping roller 25 moves symmetrically through the bidirectional screw rod 43 driven by the driving motor to clamp the workpiece. The retaining ring 26 is designed with an outer diameter matching the size of the workpiece to ensure that the clamping does not deviate. The V-shaped groove design of the tightening member 32 precisely locks the position of the workpiece, preventing lateral movement or rotation of the workpiece during clamping.

[0038] Comparative case: In the traditional clamp, the clamping roller is not coated with polyurethane material, and the clamping force is weak, which can easily cause damage to the workpiece surface and poor clamping. In this embodiment, by coating with polyurethane material, the clamping force is significantly improved and the workpiece damage is prevented, thereby improving the machining precision and efficiency.

[0039] Example 3: Improvement of tightening member structure and workpiece positioning precision

[0040] The top tight piece 3 in this embodiment includes a top tight screw 33 threaded through the support plate 23, which is made of high-strength alloy steel, with an outer diameter of 12 mm and a length of 100 mm. After hardening treatment, the surface hardness reaches HRC50-60, ensuring that it is not easily damaged during clamping. The top tight block 32 is also made of the same alloy steel material, with a V-shaped groove 31 on the side, with an angle of 45°, which can effectively lock the edge position of the workpiece, avoiding displacement of the workpiece during punching.

[0041] Working principle: When the top tight screw 33 rotates, the top tight block 32 can precisely tighten the workpiece through the operation of the handle 34. The V-shaped groove 31 can adapt to different sizes of workpieces, and through precise tightening of the edge of the workpiece, it ensures that the workpiece does not displace during the entire punching process, improving the machining precision.

[0042] Comparison case: In traditional clamping devices, the top tight block usually does not have a V-shaped groove design, and the clamping force is unevenly distributed, which can easily cause the workpiece to loosen or shift. In this embodiment, the design of the V-shaped groove significantly enhances the stability of the workpiece, avoiding the common problem of loose clamping in traditional solutions, and improving the punching precision and machining consistency.

[0043] Embodiment 4: Improvement of synchronous movement of clamping pieces by driving mechanism

[0044] In this embodiment, the driving mechanism 4 includes a bidirectional screw 43 installed on the fixed seat 1 and a driving motor 41. The bidirectional screw 43 has an outer diameter of 12 mm and a length of 200 mm, made of C45 steel, with strong tensile strength and wear resistance, capable of bearing large loads without deformation. The driving motor 41 is a direct current motor with a power of 200W and a speed of 3000RPM, ensuring that it can provide enough power to drive the bidirectional screw 43 to rotate, making the clamping pieces 21 move symmetrically.

[0045] Working principle: The driving motor 41 drives the two sliders 21 to move synchronously through the bidirectional screw 43, so that the clamping pieces remain balanced during clamping, avoiding the workpiece from shifting or being unevenly stressed. The design of the bidirectional screw makes the clamping force evenly distributed on both sides of the workpiece, avoiding the problem of unstable clamping caused by single-sided clamping in traditional devices.

[0046] Comparison case: The driving mechanism in traditional clamping devices usually uses a single screw, which often leads to uneven stress on the clamping pieces, unstable clamping of the workpiece, and affects the machining precision. In this embodiment, through the design of the bidirectional screw, the clamping pieces achieve symmetrical movement, ensuring stable clamping of the workpiece, and significantly improving the clamping precision and machining efficiency.

[0047] Embodiment 5: Improvement of fixed seat and mounting piece fixing structure

[0048] In this embodiment, the surface of the fixed seat 1 is designed with a guide groove 11, the size is 100mm*15mm, which is used to ensure the stable movement of the bidirectional screw rod 43. The fixed seat 1 is provided with mounting blocks 12 on both sides, and the U-shaped groove 13 of the mounting block 12 is 15mm*10mm in size, which is matched with the clamping block 51 and fixed on the drilling machine workbench through the nut 53, so that the clamp can be firmly fixed on the workbench and will not be displaced due to vibration.

[0049] Working principle: by combining the clamping block 51 in the mounting part 5 with the nut 53, the fixed seat 1 can be firmly installed on the drilling machine workbench and the stability of the entire clamp system is maintained. The cooperation of the guide groove 11 and the bidirectional screw rod 43 ensures the smooth operation of the clamping part and avoids the common situation of unstable clamping in traditional clamping devices.

[0050] Comparative case: in the traditional device, the clamp fixing method is relatively simple and is easily affected by vibration or external force, which causes the displacement of the clamp and affects the machining precision. The fixing structure in this embodiment combines the accurate guide groove with the clamping block, which not only enhances the stability of the clamp, but also ensures that the entire device does not displace during the working process, effectively improving the machining precision.

[0051] The working principle of the utility model is as follows: when the workpiece is punched, the fixed seat 1 is placed on the drilling machine workbench, then the clamping block 51 is clamped in the T-shaped groove of the drilling machine workbench and the screw head 52 is clamped in the U-shaped groove 13 of the mounting block 12, at this time, the nut 53 is screwed to press the mounting block 12, thereby completing the fixation of the fixed seat 1;

[0052] The driving motor 41 drives the bidirectional screw rod 43 to rotate, and the bidirectional screw rod 43 drives the two sliding blocks 21 to move relatively, and the relatively moving sliding block 21 drives the clamping rollers 25 on the two side supporting plates 23 to move relatively, at this time, the circular workpiece is placed between the clamping rollers 25 on the left and right sides, and the edge of the circular workpiece is lapped on the retaining ring 26, at this time, the clamping rollers 25 on the left and right sides are continuously driven to clamp the circular workpiece, and the jacking screw 33 is screwed to make the jacking block 32 tightly lock the circular workpiece, then the punching operation can be carried out, when the multiple holes on the surface of the circular workpiece are on the same circle, the jacking block 32 can be loosened to rotate the circular workpiece to the next punching point, without manually adjusting the drilling machine or moving the circular workpiece, thereby completing the punching machining of the circular workpiece more easily and conveniently;

[0053] When the square workpiece is punched, the edges on the left and right sides of the workpiece are placed on the retaining ring 26, the clamping roller 25 is controlled to clamp, the top block 32 is locked by screwing the top screw 33, and the punching operation is performed. When the multiple holes on the surface of the square workpiece are in the same vertical line, the top block 32 is unlocked, the square workpiece is pushed and moved longitudinally until the drill bit is aligned with the next punching point, and the drill is adjusted or the square workpiece is moved manually, so that the punching of the square workpiece is more convenient.

[0054] The above is only the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application are implemented according to the conventional means in the art, unless otherwise specified and limited.

Claims

1. A multifunctional clamping device, comprising a drilling machine worktable and a clamp fixed on the drilling machine worktable, characterized in that: The fixture includes a fixed seat (1), on the upper surface of the fixed seat (1) are two clamping parts (2) on the left and right, and on the upper surface of the fixed seat (1) is a driving mechanism (4) for driving the two clamping parts (2) to move relative to each other. The fixed seat (1) is fixed to the drilling machine worktable by a mounting part (5). The clamping member (2) includes a support plate (23). Two brackets (24) are fixed on one side of the center of the support plate (23) fixing seat (1). A vertical clamping roller (25) is installed on the bracket (24). A retaining ring (26) protruding outward is fixed near the lower end of the clamping roller (25). A top clamping member (3) for locking the workpiece is installed in the middle part of the support plate (23).

2. The multifunctional clamping device according to claim 1, characterized in that: The clamping member (2) also includes a slider (21) that is slidably mounted on the fixed base (1). The support plate (23) has a mounting plate (22) fixed on the side away from the clamping roller (25). The mounting plate (22) is fixed to the slider (21) by screws.

3. The multifunctional clamping device according to claim 1, characterized in that: The clamping component (3) includes a clamping screw (33) threaded through the support plate (23), one end of the clamping screw (33) is fixed with a handle (34), and the other end of the clamping screw (33) is equipped with a clamping block (32), and the side of the clamping block (32) is provided with a V-groove (31).

4. The multifunctional clamping device according to claim 2, characterized in that: The upper surface of the fixed base (1) is provided with a guide groove (11), and two mounting blocks (12) are fixed on the front and rear sides of the fixed base (1). The side of the mounting block (12) is provided with a U-shaped groove (13).

5. A multifunctional clamping device according to claim 4, characterized in that: The mounting component (5) includes a locking block (51) that is clamped onto the worktable of the drilling machine. A screw head (52) is fixed to the upper end of the locking block (51), and a nut (53) is fixed to the upper end of the screw head (52) through the U-shaped groove (13).

6. A multifunctional clamping device according to claim 4, characterized in that: The drive mechanism (4) includes a fixed plate (42) fixed on the left and right sides of the fixed base (1) and a bidirectional lead screw (43) set in the guide groove (11). The two ends of the bidirectional lead screw (43) are respectively rotatably mounted on the fixed plates (42) on both sides, and the bidirectional lead screw (43) is threaded through two sliders (21). A drive motor (41) for driving the bidirectional lead screw (43) to rotate is fixed on the outside of one of the fixed plates (42).

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