CN103949942A - Numerical control punching shear cutter coping clamp - Google Patents

Abstract

The invention discloses a CNC punching and shearing tool grinding fixture, which includes a clamp body, a pressing plate, a fixed rotating core, a limit plate and a rotating shaft, the rotating shaft is arranged on the clamp body, and the fixed rotating core is rotatably supported on the rotating shaft , the pressing plate is connected to the fixed rotating core through a fastening assembly, the fixed rotating core is provided with a V-shaped positioning groove, and the pressing plate is provided with at least one V that cooperates with the V-shaped positioning groove for positioning and clamping the punching and shearing tool. type compression groove, the limiting plate is installed at the bottom of the fixed rotating core, and a fastening screw is arranged between the fixed rotating core and the clamping body to lock the rotation angle of the fixed rotating core relative to the rotating shaft. The invention can grind different kinds of punching and shearing tools, and the edge of the tool for mold repairing can be adjusted arbitrarily, which reduces the grinding cost of the tool.

Description

CNC punching and shearing tool grinding fixture

technical field

The invention relates to a numerical control punching and shearing tool grinding jig, which belongs to the technical field of jigs.

Background technique

At present, in recent years, various types of CNC punching and shearing machine tools have been more and more used in the field of sheet metal processing of enterprises. For a large number of complex sheet metal parts, this high-precision punching and shearing machine tool can save a lot of mold investment, as long as the The entire plate is placed on the machine tool table, and the corresponding punching and shearing program can be input to efficiently complete the cutting and punching of various complex sheet metal parts. To have this continuous and efficient punching and shearing function, in addition to high-precision In addition to the movement of the coordinate position, it is mainly completed by various punching and shearing tools.

With the development of mass production, the frequency of wear and deformation of CNC punching and shearing tools will increase, the accuracy of parts will be affected, and the production efficiency will be reduced. Therefore, this punching and shearing tool must be ground in time to keep it sharp To maintain an efficient working state. Due to the wide variety of CNC punching and shearing tools, the large size and specification span, many tools have different grinding angles, the frequency of grinding and the workload are very large, most enterprises send them to professional tool manufacturers for repair. It is difficult to guarantee the repair time, which often affects normal production, and the charges are relatively high. Since professional tool manufacturing enterprises have a complete set of special grinding machines and special fixtures, it takes a long time to repair and grind them.

If each production enterprise also engages in a full set of grinding equipment, it is obviously unaffordable and unrealistic economically. How to invent a kind of not only simple for the above situation, but also can cover many specifications repairing apparatus, finish the repairing of punching and shearing tool with the existing common grinder of general enterprise, seem very urgent and very necessary. If the research and development is successful, the enterprise can take the initiative in the production process and win precious time, and at the same time, it can greatly reduce the repair cost, thereby improving economic benefits.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a CNC punching and shearing tool grinding fixture, which can grind different types of punching and shearing tools, and the edge of the tool for mold repairing can be adjusted arbitrarily, reducing the grinding cost.

In order to solve the above technical problems, the technical solution of the present invention is: a CNC punching and shearing tool grinding fixture, which includes a clamping body, a pressing plate, a fixed rotating core, a limit plate and a rotating shaft, and the rotating shaft is arranged on the clamping body. The rotating core is rotatably supported on the rotating shaft, and the pressing plate is connected to the fixed rotating core through a fastening assembly. The fixed rotating core is provided with a V-shaped positioning groove, and the pressing plate is provided with at least one V-shaped positioning groove. For positioning and clamping the V-shaped pressing groove of the punching and shearing tool, the limiting plate is installed at the bottom of the fixed rotating core, and a fastening screw is arranged between the fixed rotating core and the clamping body to lock the fixed rotating core Rotation angle relative to the axis.

Further, in order to be able to respectively clamp punching and shearing tools with large diameter and small diameter, there are two V-shaped compression grooves on the compression plate, which are respectively a large V-shaped compression groove and a small V-shaped compression groove, And they are respectively arranged on opposite sides of the pressing plate.

Further, the said fastening assembly is provided with two groups, which are respectively located at both ends of the pressing plate.

A structural form of the fastening assembly is further provided, the fastening assembly includes a compression screw and a buffer spring, the buffer spring is sleeved on the compression screw, and the compression screw is screwed into and fixed after passing through the compression plate In the rotating core, one end of the buffer spring abuts against the fixed rotating core, and the other end abuts against the pressing plate.

Further, in order to better limit the movement of the punching and shearing tool, the limiting plate is provided with a limiting hole for fitting on the outer circle of the punching and shearing tool.

Further, in order to know and operate the rotation angle of the fixed rotating core relative to the rotating shaft, the clamp body is provided with a rotation angle scale line on a position corresponding to the rotating mating surface of the fixed rotating core.

Further, the fixed rotating core is provided with a fastening screw stroke groove, and the nail head of the fastening screw is located in the fastening screw stroke groove.

After adopting the above technical scheme, the punching and shearing tool is clamped by the V-shaped positioning groove of the fixed rotating core and the V-shaped clamping groove of the pressing plate, and the bottom of the punching and shearing tool can abut against the limit plate , or wear it in the limiting plate, and use the fastening assembly to clamp the punching and shearing tool between the pressing plate and the fixed rotating core. By adjusting the fastening screw and the rotating shaft, the rotation angle of the fixed rotating core relative to the rotating shaft can be adjusted arbitrarily. That is to adjust the grinding angle so that the blades of various tools can be ground and repaired on ordinary surface grinders. The operator only needs to install the tool locking and fastening components to work. It only takes a few minutes to repair a tool. As long as the rotation angle on the fixture is adjusted at any time for a flat or oblique cutting tool, it can be adjusted in place in only ten seconds.

Description of drawings

Fig. 1 is the three-dimensional view of the CNC punching and shearing tool grinding fixture of the present invention;

Fig. 2 is the front view of the CNC punching and shearing tool grinding fixture of the present invention;

Fig. 3 is a left side view of Fig. 2 .

Detailed ways

In order to make the content of the present invention easier to understand clearly, the present invention will be described in further detail below according to specific embodiments in conjunction with the accompanying drawings,

As shown in Figures 1 to 3, a CNC punching and shearing tool grinding fixture includes a clamp body 1, a pressing plate 2, a fixed rotating core 3, a limit plate 4 and a rotating shaft 5, and the rotating shaft 5 is arranged on the clamping body 1 , the fixed rotating core 3 is rotatably supported on the rotating shaft 5, the pressing plate 2 is connected to the fixed rotating core 3 through a fastening assembly, the fixed rotating core 3 is provided with a V-shaped positioning groove 3-1, and the pressing plate 2 is There is at least one V-shaped pressing groove that cooperates with the V-shaped positioning groove 3-1 for positioning and clamping the punching and shearing tool 6. The limiting plate 4 is installed on the bottom end of the fixed rotating core 3, and the fixed rotating core 3 and the clip Specifically, a fastening screw 7 is arranged between 1 to lock the rotation angle of the fixed rotating core 3 relative to the rotating shaft 5 . The CNC punching and shearing tool grinding jig can also include a base plate 10 on which the jig body 1 is installed.

In order to be able to hold punching and shearing tools with large diameter and small diameter respectively, as shown in Figure 1, there are two V-shaped compression grooves on the compression plate 2, which are respectively the large V-shaped compression groove 2-1 and the small V-shaped compression groove 2-1. The V-shaped pressing grooves 2-2 are arranged on opposite sides of the pressing plate 2 respectively.

There are two groups of fastening components, which are respectively located at both ends of the pressing plate 2 .

The fastening assembly includes a compression screw 8 and a buffer spring 9. The buffer spring 9 is set on the compression screw 8. The compression screw 8 passes through the compression plate 2 and is screwed into the fixed rotating core 3. One end of the buffer spring 9 abuts against On the fixed rotating core 3 , the other end abuts against the pressing plate 2 .

In order to better limit the movement of the punching and shearing tool 6 , the limiting plate 4 is provided with a limiting hole for fitting on the outer circle of the punching and shearing tool 6 .

In order to facilitate knowing and operating the angle of rotation of the fixed rotating core 3 relative to the rotating shaft 5, as shown in Figures 1 and 2, the chuck body 1 is provided with a rotation angle scale line 1- 1.

As shown in FIG. 1 , the fixed rotating core 3 is provided with a fastening screw stroke groove 3 - 2 , and the nail head of the fastening screw 7 is located in the fastening screw stroke groove 3 - 2 .

The working principle of the present invention is as follows:

The punching and shearing tool 6 is clamped by the V-shaped positioning groove 3-1 of the fixed rotating core 3 and the V-shaped clamping groove of the pressing plate 2, and the bottom of the punching and shearing tool 6 can abut against the limit plate 4, or through the limit plate 4, and use the fastening assembly to clamp the punching and shearing tool 6 between the pressing plate 2 and the fixed rotating core 3, and can be adjusted and fixed arbitrarily by adjusting the fastening screw 7 and the rotating shaft 5 The rotation angle of the rotating core 3 relative to the rotating shaft 5 is to adjust the grinding angle so that the blades of various tools can be ground and repaired on a common surface grinder. The operator only needs to install the tool locking and fastening components to work and repair It only takes a few minutes for a tool, and it only takes ten seconds to adjust the rotation angle on the fixture for various flat or oblique tools.

The specific embodiments described above have further described the technical problems, technical solutions and beneficial effects solved by the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (7)

1. A CNC punching and shearing tool grinding fixture is characterized in that: it comprises a clamping body (1), a pressing plate (2), a fixed rotating core (3), a limiting plate (4) and a rotating shaft (5), The rotating shaft (5) is arranged on the clamp body (1), the fixed rotating core (3) is rotatably supported on the rotating shaft (5), the pressing plate (2) is connected to the fixed rotating core (3) through a fastening assembly, The fixed rotating core (3) is provided with a V-shaped positioning groove (3-1), and the pressing plate (2) is provided with at least one V-shaped positioning groove (3-1) for positioning and clamping punching and shearing tools. (6) V-shaped pressing groove, the limiting plate (4) is installed on the bottom end of the fixed rotating core (3), and the fixed rotating core (3) and the clamping body (1) are provided with Tighten the screw (7) to lock the rotation angle of the fixed rotating core (3) relative to the rotating shaft (5). 2. The CNC punching and shearing tool grinding fixture according to claim 1, characterized in that: there are two V-shaped pressing grooves on the pressing plate (2), which are respectively large V-shaped pressing grooves (2-1) and the small V-shaped pressing groove (2-2), and are arranged on opposite sides on the pressing plate (2) respectively. 3. The CNC punching and shearing tool grinding jig according to claim 1, characterized in that: said fastening components are provided with two groups, respectively located at both ends of the pressing plate (2). 4. The CNC punching and shearing tool grinding fixture according to claim 1 or 3, characterized in that: the fastening assembly includes a compression screw (8) and a buffer spring (9), and the buffer spring (9 ) is set on the compression screw (8), and the compression screw (8) is screwed into the fixed rotating core (3) after passing through the compression plate (2), and one end of the buffer spring (9) abuts against the fixed On the rotating core (3), the other end abuts against the pressing plate (2). 5. The CNC punching and shearing tool grinding jig according to claim 1, characterized in that: the limiting plate (4) is provided with a limiting hole for fitting on the outer circle of the punching and shearing tool (6). 6. The CNC punching and shearing tool grinding jig according to claim 1, characterized in that: the jig body (1) is provided with a rotation angle scale on a position corresponding to the rotating mating surface of the fixed rotating core (3) line (1-1). 7. The CNC punching and shearing tool grinding fixture according to claim 1, characterized in that: said fixed rotating core (3) is provided with a fastening screw travel groove (3-2), and said fastening screw The nail head of (7) is positioned in this fastening screw travel groove (3-2).