Clamping jig for numerical control machine tool

Abstract

The utility model discloses a clamping jig for a numerical control machine tool, which comprises two jig units, two clamping units and two supporting bases, the clamping units are mounted on the supporting bases, the jig units are erected on the two supporting bases and fixed by the clamping units, and the clamping units are mounted on the supporting bases. Each jig unit comprises a jig plate, partition adjusting blocks and fastening screws, a plurality of jig holes are formed in each jig plate, a plurality of movable partition adjusting blocks are arranged in each jig hole, workpiece clamping positions are formed between every two adjacent partition adjusting blocks, and the fastening screws penetrate into the jig holes from the side portions of the jig plates to lock the partition adjusting blocks. According to the clamping jig for the numerical control machine tool, a plurality of workpiece clamping positions are formed through the partition adjusting blocks, and the workpiece clamping positions are sequentially extruded and fixed through the fastening screws, so that a plurality of workpieces are clamped at a time, the times of assembling and disassembling the workpieces are reduced, the machining efficiency is improved, and the labor intensity of workers and the labor cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC machining, in particular to a clamping fixture for CNC machine tools. Background Art

[0002] CNC (computer numerical control) is short for computer numerically controlled machine tools. It is a type of automated machine tool controlled by a program. This control system logically processes programs specified by control codes or other symbolic instructions, decodes them through a computer, and causes the machine tool to perform the specified actions, processing blanks into semi-finished or finished parts through cutting tools.

[0003] In the CNC machining process, workpiece clamping is crucial. Most of the clamping devices in the existing technology adopt a one-in-one clamping method. During the machining operation, the operator needs to frequently change the workpiece, and can only clamp one workpiece at a time, which leads to frequent workpiece replacement, increasing operation time and labor intensity. At the same time, frequent workpiece replacement and start-stop will reduce the service life of CNC machine equipment. Therefore, how to improve production efficiency and reduce labor costs in the current CNC machining field is an urgent problem to be solved. Utility Model Content

[0004] The purpose of the utility model is to provide a clamping fixture for a CNC machine tool, which can improve processing efficiency and reduce manual labor intensity and labor costs.

[0005] In order to solve the above technical problems, the present invention can be implemented by adopting the following technical solutions:

[0006] A clamping jig for a CNC machine tool comprises a jig unit, a clamping unit and a supporting base. The clamping unit and the supporting base are respectively provided in two groups, and the clamping unit is mounted on the supporting base. The jig unit is mounted on the two groups of supporting bases and fixed by the clamping unit. The jig unit comprises a jig plate, a baffle adjustment block and a fastening screw. A plurality of jig holes are opened on the jig plate, and a plurality of movable baffle adjustment blocks are provided in each jig hole. A workpiece clamping position is formed between adjacent baffle adjustment blocks. The fastening screws penetrate into the jig hole from the side of the jig plate to lock the plurality of baffle adjustment blocks.

[0007] In one embodiment, the side walls on both sides of the jig hole are respectively provided with adjustment sliding grooves, and sliding rollers are respectively provided on both sides of the partition adjustment block. The sliding rollers are placed in the adjustment sliding grooves, so that the partition adjustment block is installed in the jig hole and can slide in the jig hole.

[0008] In one embodiment, a threaded hole is provided on the side of the jig plate, and a fastening screw is inserted through the threaded hole to squeeze the multiple baffle adjustment blocks.

[0009] In one embodiment, a positioning column is provided on the support base, and a positioning hole corresponding to the positioning column is opened on the fixture plate.

[0010] In one embodiment, handles are provided on both sides of the fixture plate.

[0011] In one embodiment, the clamping unit includes a cylinder, a bracket and a swing arm. The cylinder is installed on a support base, and the bracket is arranged on the cylinder. The middle part of the swing arm is rotatably connected to the bracket, and one end is connected to the conveying end of the cylinder. The cylinder drives the swing arm to swing with the bracket as the center.

[0012] In one embodiment, the fastening screw is a butterfly screw.

[0013] In one embodiment, the support base is made of cast iron. Beneficial effects

[0014] The utility model is used for a clamping jig for CNC machine tools. A plurality of jig holes are opened on the jig plate, and a plurality of baffle adjustment blocks are arranged in each jig hole. The adjacent baffle adjustment blocks form a workpiece clamping position. The workpiece to be processed is placed in each workpiece clamping position. After placement, a fastening screw passes through the side of the jig plate to squeeze the outermost baffle adjustment block, thereby realizing sequential squeezing to clamp the workpiece in each workpiece clamping position. The jig unit is then placed on the supporting base and clamped by the clamping unit. The clamping jig is then placed as a whole on the CNC machine tool for processing, thereby achieving one-time clamping of multiple workpieces, reducing the number of times of loading and unloading workpieces, improving processing efficiency, and reducing manual labor intensity and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a clamping fixture for a CNC machine tool according to the present invention;

[0016] Figure 2 This is a schematic diagram of a fixture unit in a clamping fixture for a CNC machine tool according to the present invention;

[0017] Figure 3 This is a top view of a fixture unit in a clamping fixture for a CNC machine tool according to the present invention;

[0018] Figure 4 The utility model is a clamping fixture for CNC machine tools Figure 2 Enlarged view of point A in the middle;

[0019] Figure 5 This is a schematic diagram of a baffle adjustment block in a clamping fixture for a CNC machine tool according to the present invention;

[0020] Figure 6This is a schematic diagram of a clamping unit in a clamping fixture for a CNC machine tool according to the present invention;

[0021] Figure 7 This is a schematic diagram of the support base in the clamping fixture of the CNC machine tool according to the present invention.

[0022] As shown in the attached figure:

[0023] 100, fixture unit; 110, fixture plate; 111, threaded hole; 120, baffle adjustment block; 121, roller; 130, fastening screw; 140, fixture hole; 141, sliding adjustment slot; 150, workpiece clamping position; 160, positioning hole; 170, handle;

[0024] 200, clamping unit; 210, cylinder; 220, bracket; 230, swing arm;

[0025] 300. Support base; 310. Positioning column. DETAILED DESCRIPTION

[0026] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only."

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] See also Figures 1 to 7A clamping fixture for a CNC machine tool includes a fixture unit 100, a clamping unit 200 and a support base 300. The clamping unit 200 and the support base 300 are respectively provided with two groups, and the clamping unit 200 is installed on the support base 300. The fixture unit 100 is mounted on the two groups of support bases 300 and is fixed by the clamping unit 200. The fixture unit 100 includes a fixture plate 110, a baffle adjustment block 120 and a fastening screw 130. A plurality of fixture holes 140 are opened on the fixture plate 110, and a plurality of movable baffle adjustment blocks 120 are provided in each fixture hole 140. A workpiece clamping position 150 is formed between adjacent baffle adjustment blocks 120. The fastening screw 130 penetrates from the side of the fixture plate 110 into the fixture hole 140 to lock the plurality of baffle adjustment blocks 120.

[0030] Specifically, in this embodiment, a plurality of jig holes 140 are provided on the jig plate 110 in the jig unit 100, and a plurality of baffle adjustment blocks 120 are provided in each jig hole 140. Adjacent baffle adjustment blocks 120 form a workpiece clamping position 150. A workpiece to be processed is placed in each workpiece clamping position 150. After placement, a fastening screw 130 passes through the side of the jig plate 110 to squeeze the outermost baffle adjustment block 120, and the outermost baffle adjustment block 120 will squeeze the workpiece and other baffle adjustment blocks 120 in turn, thereby clamping each workpiece. The workpiece in position 150 is clamped and fixed. After the workpiece is clamped and fixed, the jig unit 100 is placed on the support base 300, and the jig unit 100 is fixed by the clamping unit 200. Finally, the clamping jig in this embodiment is placed on the CNC machine tool for processing. Finally, multiple workpieces can be clamped at the same time by the jig unit 100, thereby reducing the number of times the workpiece is clamped, so as to improve the processing efficiency of the workpiece and the utilization rate of the CNC machine tool. At the same time, it is convenient and simple to clamp the workpiece, and quick clamping can be achieved to reduce labor intensity and save labor costs.

[0031] In addition, in order to achieve rapid clamping of the workpiece, a threaded hole 111 is provided on the side of the fixture plate 110 in this embodiment, and the fastening screw 130 is a butterfly screw. After the workpiece is clamped, the fastening screw 130 is inserted into the threaded hole 111 for threaded connection, and then the fastening screw 130 is twisted, so that the end of the fastening screw 130 squeezes the multiple barrier adjustment blocks 120 in turn to achieve clamping of the workpiece. The clamping method using the fastening screw 130 can effectively prevent the workpiece from moving or vibrating during the processing, thereby ensuring the processing accuracy of the workpiece.

[0032] The use of butterfly screws allows users to directly tighten them without the need for other tools, thereby improving the efficiency of workpiece clamping. Of course, the fastening screws 130 can also be of other types, which are not limited here.

[0033] At the same time, in order to improve the overall stability of the clamping fixture, the support base 300 in this embodiment is made of high-quality cast iron material, and then undergoes precision processing and heat treatment, so that the support base 300 has high strength and durability, thereby increasing the service life of the clamping fixture, and making the entire clamping fixture more stable when placed on a CNC machine tool for operation.

[0034] See also Figure 2 、 Figure 4 and Figure 5 In order to improve the versatility of the clamping jig of this embodiment, adjustment sliding grooves 141 are respectively provided on the opposite side walls of the jig hole 140, and sliding rollers 121 are respectively provided on both sides of the blocking adjustment block 120. By placing the sliding rollers 121 in the adjustment sliding grooves 141, the blocking adjustment block 120 can be installed in the jig hole 140 and can slide along the adjustment sliding grooves 141. When clamping a workpiece, the blocking adjustment block 120 can be moved so that the blocking adjustment block 120 slides along the adjustment sliding grooves 141 via the sliding rollers 121, thereby adjusting the spacing between adjacent blocking adjustment blocks 120. By adjusting this spacing, workpieces of different sizes can be clamped, thereby improving the versatility and practicality of the clamping jig.

[0035] See also Figure 2 and Figure 7 After multiple workpieces are clamped, the jig unit 100 needs to be placed on the support base 300. In order to enable the jig unit 100 to be placed quickly and accurately, in this embodiment, a positioning column 310 is provided on the support base 300, and a positioning hole 160 corresponding to the positioning column 310 is opened on the jig plate 110. The positioning hole 160 is aligned with the positioning column 310 to achieve accurate placement of the jig unit 100.

[0036] In order to facilitate the transportation and placement of the fixture unit 100 , handles 170 are provided on both sides of the fixture plate 110 . The handles 170 can facilitate the user to carry the fixture unit 100 and place it on the support base 300 .

[0037] Finally, see Figure 6After the jig unit 100 is transported and placed on the support base 300, it needs to be fixed by the clamping unit 200 to prevent the jig unit 100 from shifting during processing. Therefore, the clamping unit 200 in this embodiment includes a cylinder 210, a bracket 220 and a swing arm 230. The cylinder 210 is installed on the support base 300, and the bracket 220 is set on the cylinder 210. The middle part of the swing arm 230 is rotatably connected to the bracket 220, and one end of the swing arm is connected to the conveying end of the cylinder 210. The cylinder 210 drives the swing arm 230 to swing with the bracket 220 as the center. After the workpiece is clamped, the jig unit 100 is placed on the support base 300 for positioning, and then the cylinder 210 is started to drive one end of the swing arm 230 to lift upward. When one end of the swing arm 230 is lifted upward, the middle part of the swing arm 230 will rotate around the connection point of the bracket 220, so that the other end of the swing arm 230 is pressed downward, and then the jig unit 100 is pressed, thereby achieving the pressing and fixing of the jig unit 100, avoiding the overall displacement of the jig unit 100 during processing, and ensuring the processing quality of the workpiece.

[0038] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Any person skilled in the art can smoothly implement the present invention according to the drawings and the above description. However, any person skilled in the art who, without departing from the scope of the present invention, makes slight changes, modifications and equivalent changes based on the above disclosed technical content shall be an equivalent embodiment of the present invention. At the same time, any equivalent changes, modifications and equivalent changes made to the above embodiments based on the essential technology of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A clamping fixture for a CNC machine tool, characterized in that: It includes a fixture unit, a clamping unit and a support base. The clamping unit and the support base are respectively provided with two groups, and the clamping unit is installed on the support base. The fixture unit is mounted on the two groups of support bases and fixed by the clamping unit. The jig unit includes a jig plate, a baffle adjustment block and a fastening screw. A number of jig holes are opened on the jig plate, and a number of movable baffle adjustment blocks are provided in each jig hole. A workpiece clamping position is formed between adjacent baffle adjustment blocks. The fastening screw is inserted into the jig hole from the side of the jig plate to lock the multiple baffle adjustment blocks.

2. The clamping fixture for a CNC machine tool according to claim 1, characterized in that: The side walls on both sides of the fixture hole are respectively provided with adjustment sliding grooves, and sliding rollers are respectively provided on both sides of the partition adjustment block. The sliding rollers are placed in the adjustment sliding grooves, so that the partition adjustment block is installed in the fixture hole and can slide in the fixture hole.

3. The clamping fixture for a CNC machine tool according to claim 1, characterized in that: The side of the jig plate is provided with a threaded hole, and the fastening screws are inserted into the threaded hole to squeeze the multiple baffle adjustment blocks.

4. The clamping fixture for a CNC machine tool according to claim 1, characterized in that: The support base is provided with a positioning column, and the fixture plate is provided with a positioning hole corresponding to the positioning column.

5. The clamping fixture for a CNC machine tool according to claim 1, characterized in that: Handles are respectively provided on both sides of the fixture plate.

6. The clamping fixture for a CNC machine tool according to claim 1, characterized in that: The clamping unit includes a cylinder, a bracket and a swing arm. The cylinder is installed on a support base, and the bracket is set on the cylinder. The middle part of the swing arm is rotatably connected to the bracket, and one end is connected to the conveying end of the cylinder. The cylinder drives the swing arm to swing with the bracket as the center.

7. The clamping fixture for a CNC machine tool according to claim 3, characterized in that: The fastening screw is a butterfly screw.

8. The clamping fixture for a CNC machine tool according to claim 1, characterized in that: The supporting base is made of cast iron.

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