Universal clamp for CNC parts

Abstract

The utility model relates to the technical field of clamps, and discloses a CNC part universal clamp which comprises a clamp base, four sets of fixing clamps are arranged on the upper surface of the clamp base, each fixing clamp comprises a clamp bottom plate, side plates are arranged on the upper surfaces of the clamp bottom plates, threaded holes are formed in the outer surfaces of the side plates, first one-way screws are in threaded connection with the interiors of the threaded holes, and second one-way screws are in threaded connection with the interiors of the first one-way screws. A handle is installed at one end of the first one-way screw rod, a limiting plate is rotationally connected to the other end of the first one-way screw rod through a bearing, a fixing plate is installed on the limiting plate through a connecting assembly, a rail is arranged on the upper surface of the clamp base, a locking assembly is arranged on the upper surface of the clamp bottom plate, and one end of the locking assembly is slidably connected into the rail. According to the utility model, through the arrangement of the connecting assembly, the mode that the limiting plate is connected with the fixing plate through welding in the prior art is replaced, the fixing plate and the limiting plate can be conveniently detached, the waste of materials is reduced, and a better practical effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically a general-purpose fixture for CNC parts. Background Technology

[0002] CNC machining typically refers to precision machining, CNC machining lathes, CNC machining milling machines, and CNC machining boring and milling machines. Fixtures are used in industrial production to fix and position workpieces.

[0003] The utility model patent application with publication number "CN220372696U" discloses a universal CNC workpiece fixture, which mainly consists of a fixture base, a fixture sliding rail, a fixture distance adjustment device, a rotating component, a movable threaded rod, a single-direction fixture base plate, and a threaded rod handle. This technical solution fixes objects by adjusting the fixture distance adjustment device on the fixture base, with free adjustment of length and width. The objects are then clamped by four object fixing plates on the fixture, making the objects to be operated more secure and less prone to loosening. This makes operation more reliable. Moreover, since all four clamps are adjustable, objects at any angle can be fixed by adjusting the fixture distance adjustment device and the object fixing plates, thereby improving the overall practicality.

[0004] The CNC workpiece general fixture disclosed in the above document has the following defects: the fixture clamps and fixes the workpiece by setting an object fixing plate. However, during long-term use, the object fixing plate will gradually wear out and may lose its fixing effect on the workpiece. In the prior art, the object fixing plate is generally fixed to the limiting plate by welding. If welding is used, the limiting plate must also be replaced after the object fixing plate wears out, which will result in material waste and poor practical effect.

[0005] Therefore, it can be seen that the existing general-purpose CNC workpiece fixture does not have a structure that facilitates the replacement of the object fixing plate, and it is necessary to improve the existing shortcomings and provide a general-purpose CNC workpiece fixture. Utility Model Content

[0006] The purpose of this utility model is to provide a universal fixture for CNC parts to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model relates to a universal fixture for CNC parts, comprising a fixture base. Four sets of fixed fixtures are provided on the upper surface of the fixture base. Each fixed fixture includes a fixture base plate, and a side plate is provided on the upper surface of the fixture base plate. A threaded hole is formed on the outer surface of the side plate, and a first one-way screw is threaded into the internal thread of the threaded hole. A handle is installed at one end of the first one-way screw, and a limiting plate is rotatably connected to the other end of the first one-way screw via a bearing. A fixed plate is mounted on the limiting plate via a connecting assembly. A track is formed on the upper surface of the fixture base, and a locking assembly is provided on the upper surface of the fixture base plate. One end of the locking assembly is slidably connected inside the track.

[0009] Furthermore, the connecting assembly includes a connecting block, the upper surface of the limiting plate is provided with the connecting block, the interior of the connecting block is provided with a cavity, two limiting blocks are slidably connected inside the cavity, a spring is installed between the two limiting blocks, the upper surface of the fixing plate is provided with a mounting hole and a mounting groove, the interior of the mounting hole is fitted with the connecting block, and one end of the limiting block passes through the connecting block and extends outward.

[0010] Furthermore, one end of the limiting block is provided with an inclined surface, the bottom of the cavity is provided with a sliding groove, and the lower surface of the limiting block is provided with a slider, which is slidably connected inside the sliding groove.

[0011] Furthermore, a protective shell is fitted inside the mounting groove, and a reinforcing plate is provided at one end of the fixing plate.

[0012] Furthermore, the locking assembly includes a second one-way screw, a threaded hole is provided on the upper surface of the clamp base plate, the second one-way screw is threadedly connected inside the threaded hole, a knob is provided at one end of the second one-way screw, a pressing block is provided at the other end of the second one-way screw, an expansion sleeve is slidably connected inside the track, and a pressing block is provided inside the expansion sleeve.

[0013] Furthermore, the outer surface of the expansion sleeve is provided with anti-slip texture.

[0014] This utility model has the following beneficial effects:

[0015] (1) This utility model uses the limiting blocks at both ends of the connecting block to make the two limiting blocks move into the cavity. At the same time, the spring gradually contracts. When the outer surface of the limiting block is flush with the outer surface of the connecting block, the fixing plate can be pulled upward to make the fixing plate move upward. At the same time, the connecting block gradually separates from the mounting hole. When the connecting block is completely separated from the mounting hole, the fixing plate and the limiting plate are separated, reducing material waste and achieving a better practical effect.

[0016] (2) By rotating the knob, the second one-way screw is rotated. During the rotation, the second one-way screw moves axially upward or downward around the threaded hole. When the second one-way screw moves downward, the extrusion block extrudes the expansion sleeve to expand outward, so that the expansion sleeve expands and fits tightly against the inner wall of the track, thereby fixing the position of the clamp base plate and achieving a better fixing effect.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is an exploded view of the structure of the fixing clamp, connecting assembly, and locking assembly of this utility model;

[0021] Figure 3 This is a cross-sectional view of the clamp base, fixing clamp and locking assembly of this utility model;

[0022] Figure 4 This is a cross-sectional view of the limiting plate, fixing plate, connecting components and protective shell structure of this utility model;

[0023] The attached diagram lists the components represented by each number as follows:

[0024] In the diagram: 1. Fixture base; 101. Rail; 2. Fixture; 201. Fixture base plate; 202. Side plate; 203. First one-way screw; 204. Handle; 205. Limiting plate; 206. Fixing plate; 207. Reinforcing plate; 3. Connecting assembly; 301. Connecting block; 302. Limiting block; 303. Spring; 304. Slider; 4. Locking assembly; 401. Second one-way screw; 402. Knob; 403. Extrusion block; 404. Expansion sleeve; 5. Protective shell. Detailed Implementation

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Please see Figure 1 - Figure 4 As shown, this utility model is a general-purpose fixture for CNC parts, including a fixture base 1. The upper surface of the fixture base 1 is provided with four sets of fixed fixtures 2. The fixed fixtures 2 include a fixture base plate 201. The upper surface of the fixture base plate 201 is provided with a side plate 202. The outer surface of the side plate 202 is provided with a threaded hole. The threaded hole is internally threaded with a first one-way screw 203. One end of the first one-way screw 203 is equipped with a handle 204. The other end of the first one-way screw 203 is rotatably connected to a limiting plate 205 through a bearing. The limiting plate 205 is equipped with a fixing plate 206 through a connecting assembly 3. The upper surface of the fixture base 1 is provided with a track 101. The upper surface of the fixture base 201 is provided with a locking assembly 4. One end of the locking assembly 4 is slidably connected to the inside of the track 101.

[0027] The connection component 3 replaces the existing method of connecting the limiting plate 205 to the fixing plate 206 by welding, which makes it easier to separate the fixing plate 206 from the limiting plate 205, reduces material waste, and achieves a better practical effect.

[0028] The locking component 4 can fix the position of the fixing clamp 2, preventing the fixing clamp 2 from shifting on the clamp base 1 during use, thus achieving a better fixing effect.

[0029] The connecting component 3 includes a connecting block 301. The upper surface of the limiting plate 205 is provided with the connecting block 301. A cavity is opened inside the connecting block 301. Two limiting blocks 302 are slidably connected inside the cavity. A spring 303 is installed between the two limiting blocks 302. The upper surface of the fixing plate 206 is provided with a mounting hole and a mounting groove. The connecting block 301 is installed inside the mounting hole. One end of the limiting block 302 passes through the connecting block 301 and extends outward.

[0030] The interior of the mounting slot is fitted with a protective shell 5, and one end of the fixing plate 206 is provided with a reinforcing piece 207;

[0031] When the fixing plate 206 needs to be separated from the limiting plate 205, first remove the protective shell 5 from the inside of the mounting groove. By squeezing the limiting blocks 302 at both ends of the connecting block 301, the two limiting blocks 302 move into the cavity. At the same time, the spring 303 gradually contracts. When the outer surface of the limiting block 302 is flush with the outer surface of the connecting block 301, the fixing plate 206 can be pulled upward to move the fixing plate 206 upward. At the same time, the connecting block 301 gradually disengages from the mounting hole. After the connecting block 301 is completely disengaged from the mounting hole, the fixing plate 206 and the limiting plate 205 are separated.

[0032] The protective shell 5 can protect the connecting component 3, preventing it from being affected by dust during use, thus providing good protection.

[0033] The reinforcing plate 207 can be added to increase the strength of the fixing plate 206 and extend its service life.

[0034] The limiting block 302 has an inclined surface at one end, a sliding groove at the bottom of the cavity, and a slider 304 on the lower surface of the limiting block 302, which is slidably connected to the inside of the sliding groove.

[0035] When the fixing plate 206 needs to be fixedly installed with the limiting plate 205, the fixing plate 206 is placed directly above the limiting plate 205, and the fixing plate 206 is pushed downwards, so that the connecting block 301 is installed inside the mounting hole. Since one end of the limiting block 302 has a bevel, when the fixing plate 206 is pushed downwards, the two limiting blocks 302 will move into the cavity, and the spring 303 will gradually contract. When the fixing plate 206 and the limiting plate 205 come into contact, the spring 303 will regain its elasticity and push the limiting block 302 to move outwards, so that one end of the limiting block 302 comes into contact with the outer surface of the fixing plate 206, thereby achieving the fixed installation of the fixing plate 206 and the limiting plate 205.

[0036] By setting the slider 304 and the groove, the position of the limiting block 302 can be limited, so that the limiting block 302 cannot be disengaged from the inside of the cavity, thus achieving a good limiting effect.

[0037] The locking assembly 4 includes a second one-way screw 401. A threaded hole is provided on the upper surface of the clamp base plate 201. The second one-way screw 401 is threadedly connected inside the threaded hole. A knob 402 is provided at one end of the second one-way screw 401. A pressing block 403 is provided at the other end of the second one-way screw 401. An expansion sleeve 404 is slidably connected inside the track 101. The pressing block 403 is provided inside the expansion sleeve 404.

[0038] When the position of the fixture base plate 201 needs to be fixed, the second one-way screw 401 is rotated by turning the knob 402. During the rotation, the second one-way screw 401 moves axially upward or downward around the threaded hole. When the second one-way screw 401 moves downward, the pressing block 403 presses the expansion sleeve 404 outward, causing the expansion sleeve 404 to expand and fit tightly against the inner wall of the track 101, thereby fixing the position of the fixture base plate 201 and achieving a good fixing effect. Turning the knob 402 in the opposite direction causes the pressing block 403 to release the pressing of the expansion sleeve 404, thus canceling the fixing effect of the fixture base plate 201.

[0039] The outer surface of the expansion sleeve 404 is provided with anti-slip texture;

[0040] The anti-slip texture provided on the outer surface of the expansion sleeve 404 can increase the friction between the expansion sleeve 404 and the track 101, thus preventing the position of the fixture base plate 201 from shifting during use.

[0041] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A universal fixture for CNC parts, comprising a fixture base (1), wherein four sets of fixing fixtures (2) are provided on the upper surface of the fixture base (1), each fixing fixture (2) comprising a fixture base plate (201), wherein a side plate (202) is provided on the upper surface of the fixture base plate (201), wherein a threaded hole is formed on the outer surface of the side plate (202), wherein a first one-way screw (203) is threadedly connected to the inner thread of the threaded hole, wherein a handle (204) is installed at one end of the first one-way screw (203), and a limiting plate (205) is rotatably connected to the other end of the first one-way screw (203) via a bearing, characterized in that: The limiting plate (205) is fitted with a fixing plate (206) via a connecting component (3). The upper surface of the clamp base (1) is provided with a track (101). The upper surface of the clamp base plate (201) is provided with a locking component (4). One end of the locking component (4) is slidably connected to the inside of the track (101).

2. The universal CNC part fixture according to claim 1, characterized in that: The connecting component (3) includes a connecting block (301). The upper surface of the limiting plate (205) is provided with the connecting block (301). A cavity is opened inside the connecting block (301). Two limiting blocks (302) are slidably connected inside the cavity. A spring (303) is installed between the two limiting blocks (302). The upper surface of the fixing plate (206) is provided with mounting holes and mounting grooves. A connecting block (301) is installed inside the mounting hole. One end of the limiting block (302) passes through the connecting block (301) and extends outward.

3. A universal CNC part fixture according to claim 2, characterized in that: The limiting block (302) has an inclined surface at one end, and a sliding groove is provided at the bottom of the cavity. The lower surface of the limiting block (302) is provided with a slider (304), which is slidably connected to the inside of the sliding groove.

4. A universal CNC part fixture according to claim 2, characterized in that: A protective shell (5) is installed inside the mounting groove, and a reinforcing plate (207) is provided at one end of the fixing plate (206).

5. A universal CNC part fixture according to claim 1, characterized in that: The locking assembly (4) includes a second one-way screw (401). The upper surface of the fixture base plate (201) is provided with a threaded hole. The threaded hole is internally threaded with the second one-way screw (401). One end of the second one-way screw (401) is provided with a knob (402), and the other end of the second one-way screw (401) is provided with a pressing block (403). An expansion sleeve (404) is slidably connected inside the track (101), and a compression block (403) is provided inside the expansion sleeve (404).

6. A universal CNC part fixture according to claim 5, characterized in that: The outer surface of the expansion sleeve (404) is provided with anti-slip texture.

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