Cylindrical workpiece clamping equipment convenient to position

Abstract

The utility model discloses cylindrical workpiece clamping equipment convenient to position, which belongs to the technical field of cylindrical workpiece clamping and comprises a base and a fixing mechanism, a circular truncated cone is fixedly connected to the top end of the base, and the fixing mechanism comprises four moving rods slidably connected to the top end of the base. According to the scheme, the distances between the four fixing plates and the circle center of the circular truncated cone are the same, the included angle between every two adjacent fixing plates is 90 degrees, and when a motor is driven, under the action of a large gear and four small gears, four cams can be driven to synchronously rotate to push corresponding trigger plates to move; the four fixing plates can be pushed to move towards the circle center of the circular truncated cone at the same time to fix the cylindrical workpiece, centering fixing of the cylindrical workpiece is synchronously completed, the surface of the cylindrical workpiece is evenly stressed in the fixing process, and the stability of the cylindrical workpiece during fixing is guaranteed; according to the scheme, multi-step operation is not needed in the fixing process of the cylindrical workpiece, time and labor are saved, and therefore the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of cylindrical workpiece clamping technology, and specifically to a cylindrical workpiece clamping device that is easy to position. Background Technology

[0002] Cylindrical parts are important components of industrial machinery. During the machining process of cylindrical workpieces, clamping devices are usually used to fix them in place in order to ensure their stability and prevent displacement during machining.

[0003] A search revealed that the Chinese patent "A clamping device for a cylindrical workpiece in machining," authorized publication number "CN213795371 U," utilizes a first turntable. Rotating the first turntable, along with a second threaded rod, a U-shaped frame, a fixed bracket, a first through slot, a second through slot, a first hinge block, a second hinge block, a diagonal rod, a connecting column, and a first clamping block, allows the first clamping block to tightly hold the cylindrical workpiece, thus achieving initial clamping. The coordinated use of a fixed cylinder, connecting rod, third threaded rod, handle, and support plate provides an upward support force to the workpiece, facilitating clamping. The second turntable, fourth threaded rod, stabilizing block, spring, and second clamping block provide downward pressure to the clamped workpiece, firmly pressing the cylindrical workpiece onto the support plate. This prevents workpiece rolling from affecting machining accuracy and avoids workpiece loosening or falling off due to machining stress, thereby improving machining accuracy and enhancing the device's practicality.

[0004] Although the aforementioned application can fix cylindrical workpieces, the fixing process requires multiple steps to complete, which is cumbersome, time-consuming, and labor-intensive, thus reducing the work efficiency of the staff.

[0005] Based on this, the present invention designs a cylindrical workpiece clamping device that is easy to position in order to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a cylindrical workpiece clamping device that is easy to position.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A cylindrical workpiece clamping device for easy positioning includes a base, a frustum fixedly connected to the top of the base, and a fixing mechanism. The fixing mechanism includes four movable rods slidably connected to the top of the base. One end of each movable rod is fixedly connected to a fixing plate, and the included angle between the center points of two adjacent fixing plates is 90 degrees. A motor is fixedly connected to the bottom of the base. A large gear is fixedly connected to the output shaft of the motor. Four small gears are meshed on the surface of the large gear. A cam is fixedly connected to the surface of the rotating shaft of each small gear. The other end of each movable rod passes through the base and is fixedly connected to a trigger plate. One side of the trigger plate is in contact with the surface of the corresponding cam.

[0009] Furthermore, the fixing mechanism also includes a first ring, the center of which coincides with the center of the frustum. A pressure plate is slidably connected to the inner wall of the fixing plate. One end of the pressure plate passes through the fixing plate and is fixedly connected to a fixing block. The other end of the pressure plate passes through the first ring.

[0010] Furthermore, a threaded rod is rotatably connected to the top of the first ring, and a second ring is threadedly connected to the surface of the threaded rod. Four round rods are fixedly connected to the bottom of the second ring, and the bottom ends of the round rods penetrate into the first ring and are fixedly connected to a limiting plate. The positions of the four limiting plates correspond one-to-one with the positions of the four pressure plates.

[0011] Furthermore, a spring is fixedly connected to one side of the moving rod, and one end of the spring is fixedly connected to the inner wall of the base.

[0012] Furthermore, a lead screw is rotatably connected to the top of the base, and a mounting plate is threaded onto the surface of the lead screw. One end of the mounting plate is fixedly connected to the bottom end of the first ring.

[0013] Furthermore, the surface of the fixing plate is curved into an arc shape, and a contact pad is fixedly connected to the inner surface of the fixing plate.

[0014] Furthermore, a limiting rod is fixedly connected to the top of the base, and the top of the limiting rod extends through the mounting plate.

[0015] Furthermore, the surface of the fixing plate is provided with a sliding groove that matches the pressure plate, and the surface of the pressure plate is slidably connected to the inner wall of the sliding groove. Beneficial effects

[0016] In this solution, four fixed plates are set at the same distance from the center of the frustum, and the included angle between any two adjacent fixed plates is 90 degrees. When the drive motor is driven, the large gear and four small gears drive the four cams to rotate synchronously and push the corresponding trigger plates to move. This helps to move the four fixed plates simultaneously towards the center of the frustum to fix the cylindrical workpiece and simultaneously complete the centering fixation of the cylindrical workpiece. This ensures that the surface of the cylindrical workpiece is subjected to uniform force during the fixing process, thus guaranteeing the stability of the cylindrical workpiece during fixing. In this solution, the fixing process of the cylindrical workpiece does not require multiple steps, saving time and effort, thereby improving work efficiency.

[0017] When machining the surface of a cylindrical workpiece after it has been fixed, multiple pressure plates and corresponding fixing blocks are used to press and fix it against the top of the cylindrical workpiece. This helps to apply a downward force to the workpiece during machining, thereby enhancing the stability of the machining process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 The main structure of a cylindrical workpiece clamping device for easy positioning is three-dimensional. Figure 1 ;

[0020] Figure 2 A sectional view of the base in a cylindrical workpiece clamping device for easy positioning;

[0021] Figure 3 This is a schematic diagram of the fixing mechanism in a cylindrical workpiece clamping device that facilitates positioning.

[0022] Figure 4 A schematic diagram of the connection structure between the pressure plate, the fixing plate, and the first ring in a cylindrical workpiece clamping device for easy positioning;

[0023] Figure 5 This is a schematic diagram of the fixing plate structure in a cylindrical workpiece clamping device that facilitates positioning.

[0024] The labels in the diagram represent:

[0025] Base; 200, frustum; 300, fixing mechanism; 310, moving rod; 320, fixing plate; 321, pressure plate; 322, fixing block; 323, contact pad; 330, motor; 331, large gear; 332, small gear; 333, cam; 340, trigger plate; 350, first ring; 351, threaded rod; 352, second ring; 353, round rod; 354, limiting plate; 360, spring; 370, lead screw; 371, mounting plate; 380, limiting rod. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] The present invention will be further described below with reference to the embodiments.

[0028] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-5 A cylindrical workpiece clamping device for easy positioning includes a base 100, a frustum 200 fixedly connected to the top of the base 100, and a fixing mechanism 300. The fixing mechanism 300 includes four moving rods 310 slidably connected to the top of the base 100. One end of the moving rod 310 is fixedly connected to a fixing plate 320. The included angle between the center points of two adjacent fixing plates 320 is 90 degrees. A motor 330 is fixedly connected to the bottom of the base 100. A large gear 331 is fixedly connected to the output shaft of the motor 330. Four small gears 332 are meshed on the surface of the large gear 331. A cam 333 is fixedly connected to the surface of the rotating shaft of the small gear 332. The other end of the moving rod 310 passes through the base 100 and is fixedly connected to a trigger plate 340. One side of the trigger plate 340 is in contact with the surface of the corresponding cam 333.

[0029] In this embodiment of the utility model, the center points of the four fixed plates 320 are at the same distance from the center of the frustum 200, and the bottom end of the fixed plate 320 is in contact with the top end of the frustum 200. The rotation center point of the large gear 331 coincides with the center of the frustum 200. In the initial state, the closest point from the surface of the cam 333 to the rotation center point is in contact with one side of the trigger plate 340. The four fixed plates 320 are at the farthest distance from the center of the frustum 200. The top end of the base 100 is provided with a limiting through groove that matches the moving rod 310.

[0030] When fixing the cylindrical workpiece, it is placed on the frustum 200. At this point, the workpiece is positioned between four fixing plates 320, thus defining its initial placement. After placement, the controller starts the motor 330, which drives the large gear 331 to rotate. This, in turn, drives the four small gears 332, which in turn drive the corresponding cams 333 to rotate synchronously. During rotation, the distance between the contact point of the cam 333 and the trigger plate 340 and its rotation center point gradually increases. Therefore, the cam 333 pushes the corresponding... The corresponding trigger plate 340 moves, thereby causing the four trigger plates 340 to drive the corresponding fixed plates 320 to move simultaneously towards the center point of the frustum 200 via the moving rod 310. During the movement, the fixed plates 320 will contact the surface of the cylindrical workpiece and adjust the position of the cylindrical workpiece. When the four fixed plates 320 can no longer move, the inner surfaces of the four fixed plates 320 will all contact and abut against the surface of the cylindrical workpiece, thus completing the fixation of the workpiece. After fixation, the center of the cylindrical workpiece coincides with the center of the frustum 200, and the motor 330 can be turned off.

[0031] In this embodiment of the utility model, by setting four fixing plates 320 that are equidistant from the center of the frustum 200, and driving four cams 333 to rotate synchronously under the action of the large gear 331 and four small gears 332, the corresponding trigger plates 340 are moved. This facilitates the simultaneous movement of the four fixing plates 320 toward the center of the frustum 200 to fix the cylindrical workpiece, and simultaneously completes the centering fixation of the cylindrical workpiece. This ensures that the surface of the cylindrical workpiece is subjected to uniform force during the fixing process, guaranteeing the stability of the cylindrical workpiece during fixing. In this solution, the fixing process of the cylindrical workpiece does not require multiple steps, saving time and effort, thereby improving work efficiency.

[0032] In some embodiments, such as Figure 3-5 As shown, in a preferred embodiment of the present invention, the fixing mechanism 300 further includes a first ring 350, the center of the first ring 350 coincides with the center of the frustum 200, a pressure plate 321 is slidably connected to the inner wall of the fixing plate 320, one end of the pressure plate 321 passes through the fixing plate 320 and is fixedly connected to a fixing block 322, and the other end of the pressure plate 321 passes through the first ring 350;

[0033] In this embodiment of the utility model, the surface of the pressure plate 321 is slidably connected to the inner wall of the first ring 350, and the bottom end of the fixing block 322 is located on the same horizontal plane as the bottom end of the pressure plate 321. In the initial state, the fixing block 322 is close to the fixing plate 320, thereby ensuring the normal placement of the cylindrical workpiece. When the fixing plate 320 moves to fix the workpiece, the fixing plate 320 will drive the pressure plate 321 to move horizontally synchronously through the fixing block 322.

[0034] When the cylindrical workpiece is fixed and its surface is processed, multiple pressure plates 321 are pushed in sequence to drive the corresponding fixing blocks 322 to move horizontally away from the fixing plate 320, so that the fixing blocks 322 and part of the pressure plates 321 are above the cylindrical workpiece. At this time, the first ring 350 is driven to move downward, and multiple pressure plates 321 and multiple fixing blocks 322 move downward synchronously to press and fix the cylindrical workpiece from the top.

[0035] In this embodiment of the utility model, multiple pressure plates 321 and corresponding fixing blocks 322 are used to press and fix the cylindrical workpiece from the top, which is beneficial to apply a downward force to the surface of the cylindrical workpiece during processing, thereby enhancing the stability of the processing process.

[0036] In some embodiments, such as Figure 4-5 As shown, in a preferred embodiment of the present invention, a threaded rod 351 is rotatably connected to the top of the first ring 350, and a second ring 352 is threadedly connected to the surface of the threaded rod 351. Four round rods 353 are fixedly connected to the bottom of the second ring 352. The bottom of the round rods 353 penetrates into the first ring 350 and is fixedly connected to a limiting plate 354. The positions of the four limiting plates 354 correspond one-to-one with the positions of the four pressure plates 321.

[0037] In this embodiment of the utility model, the surface of the limiting plate 354 is slidably connected to the inner wall of the first ring 350. The inner wall of the first ring 350 is provided with a moving groove that matches the sliding of the limiting plate 354. After the push plate 321 drives the fixing block 322 to move away from the fixing plate 320, the threaded rod 351 is rotated to drive the second ring 352 to move downward, thereby causing the second ring 352 to drive multiple round rods 353 to push the limiting plate 354 to move downward synchronously to press and fix the pressure plate 321.

[0038] In this embodiment of the utility model, it is beneficial to fix the pressure plate 321 after the movement is completed, so as to ensure the stability of the pressure plate 321 when it is pressed and fixed against the cylindrical workpiece.

[0039] In some embodiments, such as Figure 3 As shown, in a preferred embodiment of the present invention, a spring 360 is fixedly connected to one side of the moving rod 310, and one end of the spring 360 is fixedly connected to the inner wall of the base 100.

[0040] In this embodiment of the invention, when the device is in its initial state, the spring 360 is in a released state. When the cam 333 pushes the trigger plate 340 to move, it will drive the moving rod 310 to squeeze the spring 360, thus compressing the spring 360. When the workpiece is released from its fixation and the force on the trigger plate 340 is released, the spring 360 loses its compression and the moving rod 310 drives the trigger plate 340 to return to its initial state.

[0041] In this embodiment of the invention, the action of the spring 360 helps to keep one side of the trigger plate 340 in constant contact with the surface of the cam 333, thus ensuring the practicality of the device.

[0042] In some embodiments, such as Figure 3 As shown, in a preferred embodiment of the present invention, a lead screw 370 is rotatably connected to the top of the base 100, and a mounting plate 371 is threadedly connected to the surface of the lead screw 370. One end of the mounting plate 371 is fixedly connected to the bottom end of the first ring 350.

[0043] In this embodiment of the utility model, when it is necessary to drive the first ring 350 to move downward, the operator drives the mounting plate 371 to move downward by rotating the lead screw 370, thereby causing the mounting plate 371 to drive the first ring 350 to move downward.

[0044] In some embodiments, such as Figure 5 As shown, in a preferred embodiment of the present invention, the surface of the fixing plate 320 is bent into an arc shape, and a contact pad 323 is fixedly connected to the inner surface of the fixing plate 320.

[0045] In this embodiment of the utility model, the contact pad 323 is a rubber component, and the surface of the contact pad 323 is provided with multiple grooves. When the fixing plate 320 fixes the cylindrical workpiece, the surface of the contact pad 323 contacts the surface of the workpiece.

[0046] In this embodiment of the invention, the frictional force when fixing the cylindrical workpiece is increased, thereby enhancing the fixing effect.

[0047] In some embodiments, such as Figure 3 As shown, in a preferred embodiment of the present invention, a limiting rod 380 is fixedly connected to the top of the base 100, and the top of the limiting rod 380 extends through the mounting plate 371.

[0048] In this embodiment of the utility model, the surface of the limiting rod 380 is slidably connected to the inner wall of the mounting plate 371 to limit the up and down movement of the mounting plate 371.

[0049] In some embodiments, such as Figure 5As shown, in a preferred embodiment of this utility model, the surface of the fixing plate 320 is provided with a sliding groove that matches the pressure plate 321, and the surface of the pressure plate 321 is slidably connected to the inner wall of the sliding groove. This ensures the stability of the pressure plate 321 sliding within the fixing plate 320.

[0050] It should be noted that the motor 330 and other components mentioned above are all devices with relatively mature existing technologies. The specific model can be selected according to actual needs. In addition, the motor 330 can be powered by the built-in power supply or by the mains power. The specific power supply method should be selected according to the situation, which will not be elaborated here.

[0051] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cylindrical workpiece clamping device for easy positioning, comprising a base (100), the top end of the base (100) being fixedly connected with a circular table (200), characterized in that: it further comprises a fixing mechanism (300), the fixing mechanism (300) comprising four moving rods (310) slidingly connected to the top end of the base (100), one end of the moving rod (310) being fixedly connected with a fixed plate (320), the included angle between the center points of two adjacent fixed plates (320) being ninety degrees, the bottom end of the base (100) being fixedly connected with a motor (330), the output shaft of the motor (330) being fixedly connected with a large gear (331), the surface of the large gear (331) being meshingly connected with four small gears (332), the surface of the rotating shaft of the small gear (332) being fixedly connected with a cam (333), the other end of the moving rod (310) penetrating out of the base (100) and being fixedly connected with a trigger plate (340), one side of the trigger plate (340) being in contact with the surface of the corresponding cam (333). The fixing mechanism (300) further comprises a first circular ring (350), the center of the first circular ring (350) coinciding with the center of the circular table (200), the inner wall of the fixed plate (320) being slidingly connected with a pressing plate (321), one end of the pressing plate (321) penetrating out of the fixed plate (320) and being fixedly connected with a fixed block (322), the other end of the pressing plate (321) penetrating out of the first circular ring (350).

2. The cylindricai workpiece holding apparatus of claim 1, wherein The top end of the first circular ring (350) is rotatably connected with a threaded rod (351), the surface of the threaded rod (351) being threadedly connected with a second circular ring (352), the bottom end of the second circular ring (352) being fixedly connected with four circular rods (353), the bottom end of the circular rod (353) penetrating into the first circular ring (350) and being fixedly connected with a limiting plate (354), the positions of the four limiting plates (354) corresponding to the positions of the four pressing plates (321) one by one.

3. The cylindrically-shaped workpiece holding apparatus of claim 2, wherein, One side of the moving rod (310) is fixedly connected with a spring (360), one end of the spring (360) being fixedly connected with the inner wall of the base (100).

4. The cylindricai workpiece chucking apparatus of claim 1, wherein, The top end of the base (100) is rotatably connected with a lead screw (370), the surface of the lead screw (370) being threadedly connected with a mounting plate (371), one end of the mounting plate (371) being fixedly connected with the bottom end of the first circular ring (350).

5. The cylindricai workpiece chucking apparatus of claim 1, wherein, The surface of the fixed plate (320) is curved into an arc shape, the inner surface of the fixed plate (320) being fixedly connected with a contact pad (323).

6. The cylindrically-shaped workpiece holding apparatus of claim 1, wherein, The top end of the base (100) is fixedly connected with a limiting rod (380), the top end of the limiting rod (380) penetrating out of the mounting plate (371).

7. The cylindrically-shaped workpiece holding apparatus of claim 1, wherein, The surface of the fixed plate (320) is provided with a sliding groove matched with the pressing plate (321), the surface of the pressing plate (321) being slidingly connected with the inner wall of the sliding groove.

8. The cylindrically-shaped workpiece holding apparatus of claim 1, wherein, ​

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