WO2021088866A1

WO2021088866A1 - Machining fixture for cnc sheet workpiece

Info

Publication number: WO2021088866A1
Application number: PCT/CN2020/126484
Authority: WO
Inventors: 郭宏军; 袁自平
Original assignee: 世登精密机械(昆山)有限公司
Priority date: 2019-11-04
Filing date: 2020-11-04
Publication date: 2021-05-14
Also published as: CN211414441U

Abstract

A machining fixture for a CNC sheet workpiece. The fixture comprises two clamps (1), i.e.,the left and right clamps, the clamps (1) being L-shaped, and horizontal ends of the two clamps (1) both extending to the outer sides; two fixing plates are provided above perpendicular portion of each of the clamps (1) and consist of an upper fixing plate (2) and a lower fixing plate (3), the upper fixing plate (2) is placed above the lower fixing plate (3), the upper and lower fixing plates (2, 3) are positioned by means of cooperation of guiding posts (5) and guiding sleeves, cylinder fixing blocks (6) are provided on horizontal ends of the two, left and right, clamps (1), cylinders (7) are fixed above the cylinder fixing blocks (6), cylinder clamping jaws (8) are provided above the cylinders (7), the cylinder clamping jaws (8) extend internally above the upper fixing plate (2) so as to press the upper fixing plate (2), several groups of fixing units are provided on the upper surface of the upper fixing plate (2), the fixing units comprise four groups of pressing blocks (10) and pressing block screws (11), and the pressing blocks (10) are provided symmetrically in pairs; two of the pressing blocks (10) are provided on front and rear edges of the upper fixing plate (2), and the other two pressing blocks (10) are provided in the inner middle positions of the upper fixing plate (2) relative to the pressing blocks (10) at the edges, the described pressing blocks (10) symmetrically in pairs are provided symmetrically with respect to the center line of the upper fixing plate (2) as an axis, the pressing block screws (11) penetrate through the pressing blocks (10) so as to fix the pressing blocks (10) on the upper fixing plate (2); among the fixing units, the pressing blocks (10) at edges of the upper fixing plate (2) are provided at the left, and relatively middle pressing blocks (10) are provided at the right, and several positioning pins (4) are provided at middle positions of the upper surface of the upper fixing plate (2). The pressing blocks (10) of the fixing units are provided in a staggered manner, and can better provide a force; for sheet workpieces, the fixture provided with the cylinders (7) enable replacing clamping workpieces back and forth for the two fixing plates, improving the machining efficiency and machining precision, and shortening the machining time.

Description

A CNC Thin Plate Workpiece Machining Fixture

Technical field

The utility model relates to the field of mechanical manufacturing, in particular to a CNC thin plate workpiece processing fixture.

Background technique

The earlier type of fixture is mainly composed of two movable jaws and fixed jaws. The type is relatively simple. The defects of this type are: it is easy to cause deformation of the workpiece hole during processing, difficult to locate, and affect processing accuracy. It is easy to locate by shape. The hole position is poor and the hole position is processed incorrectly. In traditional processing, glue is used or pressed by a pressing plate. These two methods are easy to deform, and the glue is inconvenient to remove and can easily damage the workpiece.

Utility model content

The utility model aims to provide a CNC thin plate workpiece processing fixture.

In order to achieve the above technical purpose, the present utility model adopts the following technical solution, a CNC thin plate workpiece machining fixture, the fixture includes two left and right clamping feet, the shape of the clamping feet is L-shaped, and the horizontal ends of the two clamping feet extend outward, Two fixing plates are arranged above the vertical part of the clamp feet, which are divided into an upper fixing plate and a lower fixing plate. The lower fixing plate is fixed and installed on the clamping feet by M10 fixing screws. The upper fixing plate is placed above the lower fixing plate, which is fixed up and down. The plate is positioned by the cooperation of the guide post and the guide sleeve. The guide post penetrates the upper fixing plate and the lower fixing plate up and down. A guide sleeve matching the guide post is arranged under the lower fixing plate, and the horizontal ends of the left and right clamp feet are arranged There is a cylinder fixing block, the upper part of the cylinder fixing block is fixed with a cylinder, the upper part of the cylinder is provided with a cylinder clamping claw, the cylinder clamping claw is connected to the piston rod of the cylinder through the cylinder clamping claw fixing screw, and the cylinder clamping claw extends inward to the upper fixing plate The upper fixing plate is pressed from above. The upper surface of the upper fixing plate is provided with several groups of fixing units. The fixing unit includes four sets of pressing blocks and pressing block screws. The pressing blocks are arranged symmetrically in pairs, and two of the pressing blocks are fixed on the upper surface. On the front and rear edges of the plate, the other two pressure blocks are set at the inner middle position of the upper fixing plate compared with the pressure blocks on the edge. The two symmetrical pressure blocks above are set on the center line of the fixing plate as axisymmetric, and the pressure block screws penetrate through the fixing plate. The block fixes the pressure block on the upper fixing plate, the fixing unit is provided with a pressure block on the edge of the upper fixing plate on the left side, and a relatively middle pressure block is provided on the right side, and a plurality of positioning pins are arranged on the upper surface of the upper fixing plate in the middle position.

Preferably, the upper fixing plate is provided with 5 sets of fixing units.

Preferably, the cylinder is fixed on the cylinder fixing block by 4 cylinder fixing screws.

Preferably, there are four positioning pins.

In order to solve the problem of easy deformation of workpiece processing and easy clamping of workpiece caused by earlier fixtures, the utility model adjusts the overall design and positioning method of the fixture. The horizontal ends of the left and right clamping feet are provided with cylinder fixing blocks, and the cylinder fixing blocks are fixed above the The cylinder is provided with a cylinder clamping claw above the cylinder, the cylinder clamping claw is connected to the piston rod of the cylinder by a cylinder clamping claw fixing screw penetrating the cylinder, the cylinder clamping claw extends inward to above the upper fixing plate to press the upper fixing plate, and the upper fixing The upper surface of the board is provided with several sets of fixing units. The fixing unit includes four sets of pressing blocks and pressing block screws. The pressing blocks are arranged symmetrically in pairs. Two of the pressing blocks are arranged on the front and rear edges of the upper fixing plate, and the other two pressing blocks correspond to each other. Compared with the edge of the pressure block is set in the inner middle position of the upper fixing plate, the center line of the above two symmetrical pressure blocks and the upper fixing plate are set axisymmetrically, and the pressure block screw penetrates the pressure block to fix the pressure block on the upper fixing plate. The fixing unit is provided with a pressing block on the edge of the upper fixed plate on the left, and a relatively middle pressing block is arranged on the right. The pressing blocks of the fixing unit are staggered, which can better borrow force. The utility model is aimed at thin plate workpieces, and is easy to deform and clamp during processing. Designed for inconvenience, this fixture is equipped with a cylinder that can be used as two fixed plates to replace and clamp the workpiece back and forth, which improves the processing efficiency and processing accuracy. Shorten the processing time.

Description of the drawings

The above and/or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

Figure 1 is a schematic diagram of the structure of the utility model.

In the picture: 1. Clamping foot; 2. Upper fixing plate; 3. Lower fixing plate; 4. Positioning pin; 5. Guide post; 6. Cylinder fixing block; 7. Cylinder; 8. Cylinder clamping jaw; 9. Cylinder clamp Claw fixing screw; 10. Press block; 11. Press block screw; 12. Cylinder fixing screw.

Detailed ways

The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present utility model, and cannot be understood as a limitation to the present utility model.

In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, they can be mechanically connected or electrically connected, or they can be The internal communication between the two elements can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms can be understood according to specific circumstances.

The following describes a CNC sheet workpiece machining fixture according to an embodiment of the present utility model with reference to FIG. 1. The fixture includes two left and right clamping feet 1, the shape of the clamping feet 1 is L-shaped, and the horizontal ends of the two clamping feet 1 extend outward. There are two fixing plates above the vertical part of the clip foot 1, which are divided into an upper fixing plate 2 and a lower fixing plate 3. The lower fixing plate 3 is fixedly installed on the clamping foot 1 by M10 fixing screws, and the lower fixing plate 3 is above The upper fixing plate 2 is placed, and the upper and lower fixing plates are positioned by the cooperation of the guide post 5 and the guide sleeve. The guide post 5 penetrates the upper fixing plate 2 and the lower fixing plate 3 up and down. The lower fixing plate 3 is provided with a guide that cooperates with the guide post 5 A cylinder fixing block 6 is arranged on the horizontal ends of the left and right clamping feet 1, a cylinder 7 is fixed above the cylinder fixing block 6, and a cylinder clamping jaw 8 is arranged above the cylinder 7, and the cylinder clamping jaw 8 passes through the cylinder The clamping jaw fixing screw 9 is connected with the piston rod of the cylinder 7, and the cylinder clamping jaw 8 extends inward to above the upper fixing plate 2 to press the upper fixing plate 2. The upper surface of the upper fixing plate 2 is provided with several sets of fixing units to fix The unit includes four sets of pressure blocks 10 and pressure block screws 11. The pressure blocks 10 are arranged symmetrically in pairs. Two of the pressure blocks 10 are arranged on the front and rear edges of the upper fixing plate 2, and the other two pressure blocks 10 are compared with the edge pressure blocks. 10 is set at the inner middle position of the upper fixing plate 2, the above two symmetrical pressure blocks 10 and the center line of the fixing plate 2 are set axisymmetrically, the pressure block screw 11 penetrates the pressure block 10 to fix the pressure block 10 on the upper fixing plate 2 On the upper side, the fixing unit is provided with a pressing block 10 on the edge of the upper fixing plate 2 on the left, and a relatively middle pressing block 10 is arranged on the right. A number of positioning pins 4 are arranged at the middle of the upper surface of the upper fixing plate 2.

Preferably, the upper fixing plate 2 is provided with 5 sets of fixing units.

Preferably, the cylinder 7 is fixed on the cylinder fixing block 6 by four cylinder fixing screws 12.

Preferably, there are four positioning pins 4.

In order to solve the problem of easy deformation of workpiece processing and easy clamping of workpiece caused by earlier fixtures, the utility model adjusts the overall design and positioning method of the fixture. The horizontal ends of the left and right clamping feet are provided with cylinder fixing blocks, and the cylinder fixing blocks are fixed above the The cylinder is provided with a cylinder clamping claw above the cylinder, the cylinder clamping claw is connected to the piston rod of the cylinder by a cylinder clamping claw fixing screw penetrating the cylinder, the cylinder clamping claw extends inward to above the upper fixing plate to press the upper fixing plate, and the upper fixing The upper surface of the board is provided with several sets of fixing units. The fixing unit includes four sets of pressing blocks and pressing block screws. The pressing blocks are arranged symmetrically in pairs. Two of the pressing blocks are arranged on the front and rear edges of the upper fixing plate, and the other two pressing blocks correspond to each other. Compared with the edge of the pressure block is set in the inner middle position of the upper fixing plate, the center line of the above two symmetrical pressure blocks and the upper fixing plate are set axisymmetrically, and the pressure block screw penetrates the pressure block to fix the pressure block on the upper fixing plate. The fixing unit is provided with a pressing block on the edge of the upper fixed plate on the left, and a relatively middle pressing block is arranged on the right. The pressing blocks of the fixing unit are arranged staggered, which can better borrow force. The utility model is aimed at thin plate workpieces, and is easy to deform and clamp during processing. Designed for inconvenience, this fixture is equipped with a cylinder that can be used as two fixed plates to replace and clamp the workpiece back and forth, which improves the processing efficiency and processing accuracy. Shorten the processing time.

In the description of this specification, the description with reference to the terms "one embodiment", "example", or "some examples" etc. means that the specific feature, structure, material or characteristic described in combination with the embodiment or example is included in the present utility model. In at least one embodiment or example. In this specification, the schematic representation of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and substitutions can be made to these embodiments without departing from the principle and purpose of the present invention. Variations, the scope of the utility model is defined by the claims and their equivalents.

Claims

A CNC thin plate workpiece processing fixture, characterized in that the fixture includes two left and right clamping feet, the shape of the clamping feet is L-shaped, the horizontal ends of the two clamping feet extend outward, and the vertical part of the clamping feet is provided with Two fixing plates are divided into upper fixing plate and lower fixing plate. The lower fixing plate is fixed and installed on the clamp feet by M10 fixing screws. The upper fixing plate is placed above the lower fixing plate. The upper and lower fixing plates are carried out by the cooperation of the guide post and the guide sleeve. Positioning, the guide post penetrates the upper fixing plate and the lower fixing plate up and down, the lower fixing plate is provided with a guide sleeve matched with the guide post, the horizontal ends of the left and right clamp feet are provided with cylinder fixing blocks, and the cylinder fixing blocks are fixed above A cylinder is provided with a cylinder clamping claw above the cylinder. The cylinder clamping claw is connected to the piston rod of the cylinder by a cylinder clamping claw fixing screw penetrating the cylinder. The cylinder clamping claw extends inward to above the upper fixing plate and presses the upper fixing plate. The upper surface of the fixing plate is provided with several groups of fixing units. The fixing unit includes four sets of pressing blocks and pressing block screws. The pressing blocks are arranged symmetrically in pairs. Two pressing blocks are arranged on the front and rear edges of the upper fixing plate, and the other two pressing blocks are arranged on the front and rear edges of the upper fixing plate. Compared with the pressure block on the edge set in the inner middle position of the upper fixing plate, the center line of the above two symmetrical pressure blocks and the upper fixing plate is set axisymmetrically, and the pressure block screw penetrates the pressure block to fix the pressure block on the upper fixing plate The fixing unit is provided with a pressing block on the edge of the upper fixing plate on the left, and a relatively middle pressing block is arranged on the right, and a plurality of positioning pins are arranged at the middle position on the upper surface of the upper fixing plate.
The clamp according to claim 1, wherein 5 sets of fixing units are provided on the upper fixing plate.
The clamp according to claim 1, wherein the cylinder is fixed on the cylinder fixing block by 4 cylinder fixing screws.
The clamp according to claim 1, wherein there are four positioning pins.