Workpiece clamping mechanism

Abstract

The workpiece clamping mechanism comprises a base, a lifting assembly is arranged on the inner side of the base, a table top is connected to the upper portion of the lifting assembly, a clamping assembly is arranged on the surface of the table top, one side of the clamping assembly is connected with a buffer plate, a supporting frame is installed on one side of the surface of the table top, and a measuring instrument body is arranged above the supporting frame. When a user uses the lifting table, through arrangement of corresponding structures, the lifting assembly on the inner side of the base can enable the table top to ascend and descend through arrangement of internal components, operation of workers is more convenient, the clamping assembly can be rapidly attached to a workpiece under the arrangement of the limiting blocks, clamping of the workpiece is more convenient, and the working efficiency is improved. And meanwhile, the clamping force of the clamping assembly on the workpiece is relieved through a cushion on the surface of the buffer plate and a buffer spring arranged on one side of the buffer plate.

Description

Technical Field

[0001] The utility model relates to the field of image measuring instrument clamping, in particular to a workpiece clamping mechanism. Background Art

[0002] The image measuring instrument is based on CCD digital images and relies on computer screen measurement technology and powerful software capabilities of spatial geometric operations. It is a high-precision optical image measuring instrument composed of a high-resolution CCD color lens, a continuously variable magnification objective lens, a color display, a video crosshair display, a precision grating ruler, a multi-function data processor, data measurement software and a high-precision workbench structure. In the process of using the image measuring instrument for measurement, a clamping mechanism is required to assist in the measurement.

[0003] In a Chinese patent, a workpiece clamping mechanism for an image measuring instrument is disclosed, and its patent number is CN218822166U. In the patent, a workpiece clamping mechanism for an image measuring instrument includes a main body, a mounting plate is fixedly installed on the top of the main body, a mounting bracket is fixedly installed on the rear surface of the mounting plate, a measuring device is fixedly installed on the bottom of the bracket, and a fixing mechanism is arranged on both sides of the bracket. A workpiece clamping mechanism for an image measuring instrument is provided with a fixing mechanism and a clamping mechanism. The second motor drives the gear to rotate, and can simultaneously drive the first clamping frame and the second clamping frame to move toward the middle at the same time, clamp and fix the object to be measured, and the first motor drives the lead screw to rotate, and the position of the moving block is adjusted, and then the top of the object to be measured is pressed and fixed by the electric cylinder, and then measured by the measuring device, which is conducive to the effective clamping operation of the object to be measured placed on the top of the measuring plate, and avoids the phenomenon of measurement error caused by the movement of the object to be measured.

[0004] The above-mentioned published patents have the following disadvantages:

[0005] (1) In the prior art, since the height of the clamping mechanism is always fixed, when the workpiece fixed on the surface of the clamping mechanism is small in size, although it can be clamped and fixed by the upper end component, the operator needs to bend down to accurately observe the measurement of the workpiece.

[0006] (2) In the prior art, the workpiece fixed by the clamping mechanism needs to be fixed by it, which is troublesome when adjusting the position of the clamping mechanism. It may also be necessary to wait for it to move to the appropriate position during the movement process. If the clamping force is not enough, it needs to be adjusted multiple times.

[0007] (3) In the prior art, when the clamping mechanism fixes the workpiece, it is necessary to clamp workpieces of different sizes by driving components. Since the clamping mechanism is electrically driven, if care is not taken, the clamping force on the workpiece surface may be too large, thereby causing damage to the workpiece surface and affecting the subsequent normal use of the workpiece. Utility Model Content

[0008] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a workpiece clamping mechanism.

[0009] In order to solve the above problems, the utility model proposes the following technical solutions:

[0010] A workpiece clamping mechanism comprises: a base, a cavity is provided inside the base, and support legs are installed on the bottom surface of the base;

[0011] A lifting assembly, the lifting assembly is fixedly connected to the inner side of the base, the lifting assembly includes a driving motor, a driving rod is installed at the output end of the driving motor, a turntable 1 is installed on the surface of the driving rod, a belt 1 is installed on the surface of the two turntables 1, a screw barrel 1 is fixedly connected to the upper surface of the turntable 1, a connecting block 1 is threadedly connected to the inner side of the screw barrel 1, and a connecting rod 1 is fixedly connected to the upper end of the connecting block 1;

[0012] A table top, the table top being fixedly connected to an upper surface of the connecting rod;

[0013] A clamping assembly, the clamping assembly is fixedly connected to the surface of the table, the clamping assembly comprises a fixed seat, a limit block is installed inside the fixed seat, a rotating shaft is rotatably connected inside the limit block, a screw is connected inside the limit block, and a moving plate is installed at one end of the screw;

[0014] A buffer plate, the buffer plate is located on one side of the moving plate, a soft pad is installed on the surface of the buffer plate, a limit rod is installed on the surface of the other side of the buffer plate, a stopper is installed at one end of the limit rod, a buffer spring is installed on the surface of the limit rod, and the buffer spring is fixedly connected between the moving plate and the buffer plate;

[0015] The support frame is fixedly connected to one side of the base surface and is located on one side of the table top. The measuring instrument body is installed on the bottom surface of the upper end of the support frame.

[0016] Further, the lifting assembly comprises:

[0017] A second turntable, wherein the second turntable is fixedly connected to the surface of the driving rod;

[0018] Belt 2, the belt 2 is connected to the surfaces of the two turntables 2;

[0019] The second screw barrel is fixedly connected to the upper surface of the second turntable;

[0020] A second connecting block, wherein the second connecting block is threadedly connected to the inner side of the second screw barrel;

[0021] A second connecting rod is fixedly connected to the upper surface of the second connecting block.

[0022] Furthermore, the connecting rod 1 and the connecting rod 2 are both fixedly connected to the bottom surface of the table top, and the connecting rod 1 and the connecting rod 2 are slidably connected to the surface of the base.

[0023] Furthermore, the screw is threadedly connected to the fixing seat and the inner side of the limiting block, one end of the inner side of the limiting block is a threaded structure, and the limiting block rotates around the rotating shaft.

[0024] Furthermore, a limiting ring is provided on the surface of the movable plate, the screw is rotatably connected to the inner side of the limiting ring, and a ball is installed at the joint between the limiting ring and the screw.

[0025] Compared with the prior art, the beneficial effects achieved by this new method are:

[0026] (1) The utility model sets a lifting assembly on the inner side of the base, which is driven by a driving motor and cooperates with two turntables and a belt to enable the upper table to be lifted and lowered by the rotation of a screw barrel, thereby changing the height of the workpiece on the table surface and making it more convenient for workers to operate.

[0027] (2) The clamping assembly provided in the utility model can rotate the upper limit block to open it through the rotating shaft, so that the inner screw can drive the movable plate to slide directly, so as to quickly approach the surface of the workpiece, and then close the limit block and rotate the screw to make the movable plate close to the workpiece.

[0028] (3) The utility model sets a buffer plate on the surface of the movable plate. Under the elastic force setting of the buffer spring, the buffer plate enables the soft pad to fit with the workpiece, thereby alleviating the clamping force on the workpiece surface and avoiding damage to the workpiece surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional diagram of a workpiece clamping mechanism of the utility model.

[0030] Figure 2 It is an internal stereogram of a workpiece clamping mechanism of the utility model.

[0031] Figure 3 It is a cross-sectional view of a workpiece clamping mechanism of the utility model.

[0032] Figure 4 It is a partial structural stereogram of a workpiece clamping mechanism of the utility model.

[0033] As shown in the figure: 1. Base; 2. Lifting assembly; 3. Table; 4. Clamping assembly; 5. Buffer plate; 6. Support frame; 7. Measuring instrument body; 101. Support leg; 201. Drive motor; 202. Drive rod; 203. Turntable 1; 204. Belt 1; 205. Screw barrel 1; 206. Connecting block 1; 207. Connecting rod 1; 211. Turntable 2; 212. Belt 2; 213. Screw barrel 2; 214. Connecting block 2; 215. Connecting rod 2; 401. Fixed seat; 402. Limit block; 403. Rotating shaft; 404. Screw rod; 405. Moving plate; 406. Limit ring; 501. Cushion; 502. Limit rod; 503. Stopper; 504. Buffer spring. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0035] like Figures 1 to 4 As shown, a workpiece clamping mechanism includes a base 1, the base 1 with a cavity inside is supported by a supporting leg 101, a lifting assembly 2 fixed inside the base 1 is provided with a driving motor 201, the driving motor 201 drives a turntable 203 to rotate through a driving rod 202, and a belt 204 is provided between the two turntables 203 for linkage, so that a screw barrel 205 can rotate, so that an inner connecting block 206 can drive a table 3 to rise and fall through a connecting rod 207, and a clamping assembly 4 fixed on the surface of the table 3 is provided with a fixed seat 401, The limit block 402 on the inner side of the seat 401 rotates through the rotating shaft 403, and cooperates with the fixed seat 401 to enable the screw 404 to drive the movable plate 405 to move. The buffer plate 5 located on one side of the movable plate 405 is attached to the surface of the workpiece through the soft pad 501 on the surface. The limit rod 502 installed on the other side of the buffer plate 5 is limited by the stop block 503, so that the buffer spring 504 on the surface of the limit rod 502 can relieve the clamping force. The support frame 6 fixed on one side of the surface of the base 1 is located on one side of the table 3, and the workpiece is measured by the measuring instrument body 7 arranged on the bottom surface of the upper end of the support frame 6.

[0036] The lifting assembly 2 is provided with a turntable 211 fixed on the surface of the driving rod 202. With the assistance of a belt 212, the turntable 211 can drive the screw barrel 213 to rotate, so that the connecting block 214 threadedly connected to its inner side can drive the connecting rod 215 to rise and fall.

[0037] Through the above technical solution, by rotating the driving rod 202, the turntable 1 203 and the turntable 2 211 on the surface can rotate synchronously, and with the cooperation of the belt 1 204 and the belt 2 212, the connecting rod 1 207 and the connecting rod 2 215 can be raised and lowered synchronously.

[0038] The connecting rod 1 207 and the connecting rod 215 slidably connected to the surface of the base 1 are both fixed to the bottom surface of the table top 3 .

[0039] Through the above technical solution, by fixing the connecting rod 1 207 and the connecting rod 215, the two connecting blocks will not be driven to rotate simultaneously during the rotation of the screw barrel 1 205 and the screw barrel 2 213, making the two connecting blocks more stable during the lifting process.

[0040] The screw 404 threadedly connected to the fixing seat 401 and the inner side of the limiting block 402 pushes the moving plate 405 to move, and the limiting block 402 with a threaded structure at one end inside rotates around the rotating shaft 403 .

[0041] Through the above technical solution, the limit block 402 is opened and closed with the cooperation of the rotating shaft 403, so that the inner screw 404 can be separated from the threaded connection, so that it can slide inside the fixing seat 401 and the limit block 402, thereby making the clamping work more convenient.

[0042] The limiting ring 406 disposed on the surface of the moving plate 405 enables the screw rod 404 to rotate inside the limiting ring 406 with the assistance of the balls.

[0043] Through the above technical solution, with the assistance of the ball, when one end of the screw 404 rotates inside the limiting ring 406, the friction between the two can be reduced, making the rotation of the screw 404 smoother.

[0044] When in use, when the user uses the workpiece clamping mechanism, the workpiece to be clamped is placed on the surface of the table 3, and the limit block 402 is opened by the rotating shaft 403, so that the screw 404 can be lifted up and slide inside the fixed seat 401, so that the movable plate 405 can quickly approach the workpiece, and then the limit block 402 is closed, and the movable plate 405 can be slightly approached to the workpiece by rotating the screw 404, and then the cushion 501 can be attached to the surface of the workpiece through the setting of the buffer spring 504, and the workpiece is elastically clamped, and then the driving motor 201 is started, so that the driving rod 202 can drive the turntable 1 203 and the turntable 211 to rotate, so that the screw barrel 1 205 and the screw barrel 213 can rotate synchronously, so that the connecting block 1 206 and the connecting block 2 214 connected on the inner side can support the lifting of the table 3, so as to adjust the table 3 to an appropriate height, and observe and measure through the measuring instrument body 7.

[0045] The electrical components appearing in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that controls a computer, etc. The specific implementation method of the present disclosure omits the detailed description of known functions and known components. To ensure the compatibility of the equipment, the operating methods used are consistent with the parameters of marketed equipment.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0047] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A workpiece clamping mechanism, characterized in that ,include: A base (1), wherein a cavity is provided inside the base (1), and a supporting leg (101) is installed on the bottom surface of the base (1); A lifting assembly (2), the lifting assembly (2) is fixedly connected to the inner side of the base (1), the lifting assembly (2) comprises a driving motor (201), and a driving rod is installed at the output end of the driving motor (201) (202), a rotating disk (203) is installed on the surface of the driving rod (202), and the two rotating disks A belt (204) is installed on the surface of the turntable (203); a screw barrel (205) is fixedly connected to the upper surface of the turntable (203); a connecting block (206) is threadedly connected to the inner side of the screw barrel (205); and a connecting rod (207) is fixedly connected to the upper end of the connecting block (206); A table top (3), the table top (3) being fixedly connected to the upper surface of a connecting rod (207); A clamping assembly (4), the clamping assembly (4) being fixedly connected to the surface of the table top (3), the clamping assembly (4) comprising a fixing seat (401), a limiting block (402) being installed inside the fixing seat (401), a rotating shaft (403) being rotatably connected inside the limiting block (402), a screw rod (404) being connected inside the limiting block (402), and a movable plate (405) being installed at one end of the screw rod (404); A buffer plate (5), the buffer plate (5) being located on one side of the movable plate (405), a soft pad (501) being installed on the surface of the buffer plate (5), a limit rod (502) being installed on the surface of the other side of the buffer plate (5), a stopper (503) being installed on one end of the limit rod (502), a buffer spring (504) being installed on the surface of the limit rod (502), and the buffer spring (504) being fixedly connected between the movable plate (405) and the buffer plate (5); A support frame (6) is fixedly connected to one side of the surface of the base (1) and is located on one side of the table top (3). A measuring instrument body (7) is installed on the bottom surface of the upper end of the support frame (6).

2. A workpiece clamping mechanism according to claim 1, characterized in that: The lifting assembly (2) comprises: A second rotating disk (211), wherein the second rotating disk (211) is fixedly connected to the surface of the driving rod (202); Belt 2 (212), the belt 2 (212) is connected to the surfaces of the two rotating disks 2 (211); A second screw barrel (213), wherein the second screw barrel (213) is fixedly connected to the upper surface of the second rotating disk (211); A second connecting block (214), wherein the second connecting block (214) is threadedly connected to the inner side of the second screw barrel (213); A second connecting rod (215), wherein the second connecting rod (215) is fixedly connected to the upper surface of the second connecting block (214).

3. A workpiece clamping mechanism according to claim 2, characterized in that: The connecting rod 1 (207) and the connecting rod 2 (215) are both fixedly connected to the bottom surface of the table top (3), and the connecting rod 1 (207) and the connecting rod 2 (215) are slidably connected to the surface of the base (1).

4. A workpiece clamping mechanism according to claim 1, characterized in that: The screw rod (404) is threadedly connected to the fixing seat (401) and the inner side of the limiting block (402); one end of the limiting block (402) is a threaded structure; and the limiting block (402) rotates around the rotating shaft (403).

5. A workpiece clamping mechanism according to claim 1, characterized in that: A limiting ring (406) is provided on the surface of the movable plate (405), the screw rod (404) is rotatably connected to the inner side of the limiting ring (406), and a ball bearing is installed at the joint between the limiting ring (406) and the screw rod (404).

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