Workpiece clamp for numerical control machine tool

Abstract

The workpiece clamp for the numerical control machine tool comprises a main body mechanism, an adjusting mechanism is fixedly installed on the top of the main body mechanism, the main body mechanism comprises a fixing base, three sets of installation blocks are fixedly installed on one side of the fixing base, an installation disc is rotatably installed on one side of the fixing base through the installation blocks, and the installation disc is installed on the other side of the fixing base. Three sets of extrusion blocks are eccentrically mounted in the mounting disc, displacement grooves are formed in the mounting blocks, one ends of the extrusion blocks are slidably mounted on one sides of the displacement grooves, the moving space of the mounting disc is limited through the mounting blocks, so that the mounting disc can only rotate on one side of the fixing base, and through cooperation of the mounting disc, the extrusion blocks and the displacement grooves, the extrusion blocks can rotate on one side of the fixing base. And when the mounting disc rotates, the three sets of extrusion blocks synchronously and eccentrically rotate, the diameter of the internal space among the three sets of extrusion blocks is changed, and then the workpiece is extruded to the center of the fixing base to be positioned and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled machine tools, in particular to a workpiece clamp used for numerically controlled machine tools. Background Art

[0002] CNC machine tools, or computer numerical control machine tools, are automated machine tools equipped with a program control system. This system can logically parse and execute programs specified by control codes or other symbolic instructions, and convert these instructions into coded digital information. These digital information are input into the CNC device through information carriers. After calculation and processing, the CNC device sends out various control signals to guide the precise movement of various parts of the machine tool. According to the preset drawing requirements, CNC machine tools can automatically complete the processing of parts with complex shapes and sizes.

[0003] CNC machine tool workpiece fixtures, referred to as fixtures, are devices used to fix and position workpieces on CNC machine tools for efficient and precise processing. Its main function is to ensure the correct position and posture of the workpiece during processing, while providing sufficient stability to prevent vibration or movement during processing, thereby ensuring processing accuracy and surface quality.

[0004] In the prior art, CNC machine tool workpiece fixtures usually use two mechanisms to respectively complete the positioning and clamping of the workpiece. During the separate positioning and clamping processes, the workpiece may move slightly due to external force or improper operation, resulting in a deviation between the final processing position and the preset positioning, affecting the processing accuracy. Utility Model Content

[0005] The purpose of the utility model is to provide a workpiece clamp for a CNC machine tool, which has the advantage of simultaneous positioning and clamping, and solves the problem that during the separate positioning and clamping processes, the workpiece may undergo slight movement due to external force or improper operation, resulting in a deviation between the final processing position and the preset positioning, thereby affecting the processing accuracy.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a workpiece clamp for a CNC machine tool, comprising a main body mechanism, an adjustment mechanism is fixedly installed on the top of the main body mechanism, the main body mechanism comprises a fixed seat, three groups of mounting blocks are fixedly installed on one side of the fixed seat, a mounting disk is rotatably installed on one side of the fixed seat through the mounting block, three groups of extrusion blocks are eccentrically installed inside the mounting disk, a displacement groove is opened inside the mounting block, and one end of the extrusion block is slidably installed on one side of the displacement groove.

[0007] As a preferred workpiece clamp for a CNC machine tool of the utility model, the adjustment mechanism includes a rack, which is fixedly mounted on one side of a mounting plate, one side of the rack is meshedly connected with a gear, the gear is rotatably mounted on one side of a fixed seat, and a plug-in slot is provided on the top of the gear.

[0008] As a preferred workpiece clamp for a CNC machine tool of the utility model, a mounting seat is fixedly installed on one side of the gear, two groups of clamping blocks are rotatably installed on the top of the mounting seat, mounting columns are fixedly installed on the left and right sides of the mounting seat, a spring is fixedly installed on one side of the mounting column, and the end of the spring away from the mounting column is fixedly installed on one side of the clamping block.

[0009] As a preferred workpiece clamp for a numerically controlled machine tool of the utility model, an extrusion twist is rotatably mounted on one side of the mounting seat, and a manipulation twist is fixedly mounted on the top of the extrusion twist.

[0010] As a preferred embodiment of the workpiece clamp for a numerically controlled machine tool of the utility model, a plurality of anti-slip grooves are provided on one side of the extrusion block.

[0011] As a preferred workpiece clamp for a numerically controlled machine tool of the utility model, a plurality of mounting holes are provided inside the fixing seat.

[0012] As a preferred workpiece clamp for a numerically controlled machine tool of the utility model, a magnetic suction block is fixedly mounted on one side of the fixing seat.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model limits the movable space of the mounting disk by means of the mounting block, so that the mounting disk can only rotate on one side of the fixed seat. Through the cooperation among the mounting disk, the extrusion block and the displacement groove, the three groups of extrusion blocks rotate synchronously and eccentrically when the mounting disk rotates, and the diameter of the internal space between the three groups of extrusion blocks is changed, so that the workpiece is squeezed in the center of the fixed seat, and the workpiece is positioned and fixed. It has the advantage of synchronous positioning and clamping, and solves the problem that in the separate positioning and clamping process, the workpiece may move slightly due to external force or improper operation, resulting in deviation between the final processing position and the preset positioning, thereby affecting the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is an expanded view of the main mechanism of the utility model;

[0017] Figure 3 For this utility model Figure 1 Enlarged view of point A in the middle.

[0018] In the figure: 1. main body mechanism; 101. fixing seat; 102. mounting plate; 103. extrusion block; 104. mounting block; 105. displacement slot; 106. magnetic block; 107. anti-skid slot; 108. mounting hole; 2. adjustment mechanism; 201. rack; 202. gear; 203. plug-in slot; 204. mounting seat; 205. clamping block; 206. mounting column; 207. spring; 208. extrusion twist; 209. operating twist. DETAILED DESCRIPTION

[0019] See also Figure 1-3 A workpiece clamp for a numerically controlled machine tool comprises a main body mechanism 1, an adjusting mechanism 2 is fixedly installed on the top of the main body mechanism 1, the main body mechanism 1 comprises a fixed seat 101, three groups of mounting blocks 104 are fixedly installed on one side of the fixed seat 101, a mounting plate 102 is rotatably installed on one side of the fixed seat 101 through the mounting block 104, three groups of extrusion blocks 103 are eccentrically installed inside the mounting plate 102, a displacement groove 105 is opened inside the mounting block 104, and one end of the extrusion block 103 is slidably installed on one side of the displacement groove 105;

[0020] During use, the mounting block 104 limits the movable space of the mounting disk 102, so that the mounting disk 102 can only rotate on one side of the fixed seat 101. Through the cooperation between the mounting disk 102, the extrusion block 103 and the displacement groove 105, the three groups of extrusion blocks 103 rotate eccentrically synchronously when the mounting disk 102 rotates, changing the diameter of the internal space between the three groups of extrusion blocks 103, and then squeezing the workpiece in the center of the fixed seat 101 to position and fix the workpiece. It has the advantage of simultaneous positioning and clamping, and solves the problem that in the separate positioning and clamping process, the workpiece may move slightly due to external force or improper operation, resulting in a deviation between the final processing position and the preset positioning, thereby affecting the processing accuracy.

[0021] Furthermore, the adjustment mechanism 2 includes a rack 201, which is fixedly mounted on one side of the mounting plate 102, one side of the rack 201 is meshedly connected with a gear 202, the gear 202 is rotatably mounted on one side of the fixing base 101, and a plug-in slot 203 is provided on the top of the gear 202;

[0022] During use, the gear 202 and the rack 201 cooperate to make the gear 202 drive the rack 201 to rotate, and by inserting the control rod in the insertion slot 203, it is convenient for the staff to rotate the gear 202, thereby controlling the clamping degree of the main mechanism 1 on the workpiece.

[0023] Furthermore, a mounting seat 204 is fixedly installed on one side of the gear 202, two groups of clamping blocks 205 are rotatably installed on the top of the mounting seat 204, mounting posts 206 are fixedly installed on both the left and right sides of the mounting seat 204, a spring 207 is fixedly installed on one side of the mounting post 206, and one end of the spring 207 away from the mounting post 206 is fixedly installed on one side of the clamping block 205;

[0024] During use, the gear 202, the mounting seat 204, the block 205, the spring 207, and the extrusion twist 208 cooperate to form a ratchet mechanism to limit the installation direction of the gear 202 and prevent the mounting plate 102 from rotating and loosening after the workpiece is fixed.

[0025] Furthermore, a squeeze twist 208 is rotatably mounted on one side of the mounting seat 204, and a manipulation twist 209 is fixedly mounted on the top of the squeeze twist 208;

[0026] During use, the squeezing knob 208 is rotated to squeeze a group of blocks 205 so that the group of blocks 205 are away from the insertion slot 203, so that one group of blocks 205 loses the restriction on the gear 202, thereby flexibly adjusting the rotation direction of the gear 202.

[0027] Furthermore, a plurality of anti-slip grooves 107 are provided on one side of the extrusion block 103;

[0028] During use, the anti-slip groove 107 increases the friction between the workpiece and the workpiece, thereby ensuring that the workpiece is fixed stably.

[0029] Furthermore, a plurality of mounting holes 108 are provided inside the fixing base 101;

[0030] During use, the fixing base 101 is fixedly installed on one side of the CNC machine tool through the mounting hole 108 .

[0031] Furthermore, a magnetic block 106 is fixedly mounted on one side of the fixing base 101;

[0032] During use, the workpiece to be processed is initially fixed by the magnetic block 106 to prevent it from falling off from one side of the fixing seat 101 during the workpiece positioning and clamping process.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A workpiece clamp for a numerically controlled machine tool, comprising a main body mechanism (1), an adjustment mechanism (2) being fixedly mounted on the top of the main body mechanism (1), characterized in that: The main body mechanism (1) comprises a fixed seat (101), three groups of mounting blocks (104) are fixedly mounted on one side of the fixed seat (101), a mounting plate (102) is rotatably mounted on one side of the fixed seat (101) via the mounting blocks (104), three groups of extrusion blocks (103) are eccentrically mounted inside the mounting plate (102), a displacement groove (105) is provided inside the mounting block (104), and one end of the extrusion block (103) is slidably mounted on one side of the displacement groove (105).

2. A workpiece clamp for a CNC machine tool according to claim 1, characterized in that: The adjustment mechanism (2) comprises a rack (201), the rack (201) being fixedly mounted on one side of the mounting plate (102), one side of the rack (201) being meshedly connected with a gear (202), the gear (202) being rotatably mounted on one side of the fixing seat (101), and a plug-in slot (203) being provided on the top of the gear (202).

3. A workpiece clamp for a CNC machine tool according to claim 2, characterized in that: A mounting seat (204) is fixedly mounted on one side of the gear (202); two groups of clamping blocks (205) are rotatably mounted on the top of the mounting seat (204); mounting posts (206) are fixedly mounted on both left and right sides of the mounting seat (204); a spring (207) is fixedly mounted on one side of the mounting post (206); and one end of the spring (207) away from the mounting post (206) is fixedly mounted on one side of the clamping block (205).

4. A workpiece clamp for a CNC machine tool according to claim 3, characterized in that: An extrusion twist (208) is rotatably mounted on one side of the mounting seat (204), and an operating twist (209) is fixedly mounted on the top of the extrusion twist (208).

5. A workpiece clamp for a CNC machine tool according to claim 1, characterized in that: A plurality of anti-slip grooves (107) are provided on one side of the extrusion block (103).

6. A workpiece clamp for a CNC machine tool according to claim 1, characterized in that: A plurality of mounting holes (108) are provided inside the fixing seat (101).

7. A workpiece clamp for a CNC machine tool according to claim 1, characterized in that: A magnetic attraction block (106) is fixedly mounted on one side of the fixing seat (101).

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