Positioning tool for quickly fixing blade

Abstract

The utility model discloses a positioning tool for quickly fixing a blade, which is a sheet-shaped metal plate, a hollow positioning groove is arranged in the middle of the sheet-shaped metal plate, and the side wall of the hollow positioning groove is used for positioning the blade placed in the hollow positioning groove in a surrounding manner. The tool is a profiling tool, original single-direction positioning (positioning on the two sides of the blade) of the blade is changed into surrounding type positioning, the safety of the machining process is improved, and the problem that the machining efficiency of workers is low due to the positioning problem is solved. Due to the fact that the tool is a profiling tool, the blade can be automatically positioned after being well placed, and the blade replacement efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of processing tooling for metal wire shearing blades, specifically to a positioning tooling for quickly fixing blades. Background Technology

[0002] Among the commonly used accessories in cold heading equipment, the cutting blade plays a crucial role in wire shearing. The thickness of the cutting blade is usually slightly shorter than the length of the wire segment cut by that blade.

[0003] When the wire section to be cut is short and the blade is thin, it is extremely difficult to process the blade with a grinding wheel. The blade is easily affected by the movement of the grinding wheel, which can lead to unstable positioning. In this case, a tooling is needed to fix the position of the blade.

[0004] Employees typically use two thin, long steel plates directly below the direction of the parallel grinding wheel's movement to fix the blades on both sides for positioning. They then use the magnetic chuck on the worktable to hold the steel plates and the blades in place, preventing the blades from shifting or flying off during relative movement. However, the blades being ground each day come in various thicknesses and specifications, some thin and some thick. It is difficult to switch between different blade specifications using the existing simple tooling. Due to the lack of experience among employees, excessive feed often occurs during the machining process, causing the blades and positioning stops to shift, seriously affecting the operator's safety. Furthermore, the dimensional accuracy of the machined blades often fails to meet the drawing requirements, resulting in the blades being scrapped and unable to be repaired.

[0005] Currently, employees are using simple positioning fixtures to process cutting tools, which cannot meet the increasing demand for products. To improve the positioning accuracy of cutting tool processing and meet the requirements for quick tool change, a simple and practical fixture needs to be designed. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a positioning fixture for quickly fixing cutting blades, which can quickly position cutting blades of different thicknesses, prevent the cutting blades from deviating during the grinding process, and also allow for quick cutting blade replacement.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] A positioning fixture for quickly fixing a blade is a thin sheet metal plate with a hollow positioning groove in the middle. The side wall of the hollow positioning groove forms a surrounding positioning for the blade placed in the hollow positioning groove.

[0009] Preferably, one end of the blade in the length direction has a concave cutting edge for cutting wire, and the outline of the hollow positioning groove is consistent with the outline of a single blade.

[0010] Preferably, the hollow positioning groove includes a clearance groove formed at the concave cutting edge position of the corresponding blade, extending away from the concave cutting edge.

[0011] Preferably, the hollow positioning groove includes several first positioning areas and several second positioning areas, the first positioning areas and the second positioning areas alternate along the length direction of the blade, the width of each positioning area is an integer multiple of the width of a single blade, and the contour of the second positioning area on each side in the width direction is offset outward or inward by half the width of a single positioning blade compared to the contour of the first positioning area on the same side.

[0012] Preferably, the front of the positioning area where the cutout positioning groove is located extends away from the concave cutting edge of each blade to form an avoidance groove.

[0013] Preferably, all first positioning areas can hold the same number of blades, all second positioning areas can hold the same number of blades, the width of the second positioning area is smaller than the width of the first positioning area by the width of one blade, and the center line of the width of the second area coincides with the center line of the width of the first positioning area.

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

[0015] 1. This tooling is a contour tooling, which changes the original unidirectional positioning of the blade (positioning of both sides of the blade) to a surrounding positioning, improving the safety of the machining process and improving the problem of low machining efficiency caused by positioning issues.

[0016] 2. As it is a contour-following fixture, the cutting tool is automatically positioned once placed, thus improving the efficiency of cutting tool changing. This fixture is suitable for machining cutting tools of different thicknesses; the cutting tool thickness must be greater than the fixture thickness.

[0017] 3. Different layouts can be used for blades with simple shapes. As the number of blades increases, the corresponding processing area of ​​the grinding wheel also increases, and the thickness consistency of the blades after grinding is well guaranteed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the positioning fixture for quickly fixing the blade according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of a quick-fix blade positioning fixture suitable for positioning a single blade;

[0020] Figure 3 It's the blade in Figure 2 A schematic diagram of the tooling;

[0021] Figure 4 This is a schematic diagram of a positioning fixture for quick-fixing blades, which has two first positioning zones and one second positioning zone.

[0022] Figure 5This is a schematic diagram showing the positions of two first positioning areas and one second positioning area on the tooling.

[0023] Figure 6 Is Figure 4 The tooling was filled with diagrams of blades. Detailed Implementation

[0024] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 6 As shown in the figure, this embodiment discloses a positioning fixture for quickly fixing a blade. It is a thin sheet of steel plate with a hollow positioning groove 2 in the middle. The side wall of the hollow positioning groove 2 forms a surrounding positioning for the blade 3 placed in the hollow positioning groove 2. The blade is fixed in the front, back, left and right directions, and the blade cannot move on the horizontal plane.

[0027] When the fixture 1 is used to position a single blade 3, the outline of the hollow positioning groove 2 is consistent with the outline of the single blade 3. One end of the blade 3 in the length direction (defined as the front end) has a concave cutting edge 4 for cutting wire. Preferably, the hollow positioning groove 2 includes a relief groove 7 extending away from the concave cutting edge 4 at the position of the corresponding blade 3. The relief groove 7 can avoid the fixture 1 from bumping or hitting the area around the cutting edge 4 when placing the blade 3, and prevent the cutting edge 4 from breaking.

[0028] When the fixture 1 is used to position multiple sets of blades 3, the hollow positioning groove 2 includes several first positioning areas 5 and several second positioning areas 6. The first positioning areas 5 and the second positioning areas 6 alternate along the length direction of the blades 3. The width of each positioning area is an integer multiple of the width of a single blade 3. The contour of the second positioning area 6 on each side in the width direction is offset outward or inward by half the width of a single positioning blade 3 compared to the contour of the same side of the first positioning area 5, so that the blades 3 placed in adjacent positioning areas are staggered by half the width of the blade 3 along the width direction of the blade 3. In this way, the front end of the blade 3 located at the rear can extend into the space between the rear ends of the two blades 3 in front, reducing the placement length and thus reducing the length of the fixture 1. Correspondingly, the movement path of the grinding wheel when grinding the blades 3 is reduced.

[0029] Preferably, the front of the positioning area where the cutout positioning groove 2 is located corresponds to the position of the concave cutting edge 4 of each blade 3, and extends away from the concave cutting edge 4 to form a relief groove 7. The relief groove 7 can avoid the tooling 1 from bumping or hitting the area around the cutting edge 4 when placing the blade 3, and prevent the cutting edge 4 from breaking.

[0030] The number of first positioning areas 5 and second positioning areas 6 depends on the number of blade groups. In this embodiment, there are two first positioning areas 5 and one second positioning area 6, with the second positioning area 6 located between the two first positioning areas 5. In other embodiments, this is not limited to this; for example, two second positioning areas can also be provided. Each positioning area is used to position a group of blades. Multiple blades 3 are arranged in a row along the width direction, closely (without gaps, in direct contact), as a group of blades.

[0031] In this embodiment, the end of the blade 3 facing away from the concave cutting edge 4 (defined as the tail end) is arc-shaped. To facilitate the processing (usually by stamping or laser cutting) of the hollow positioning groove 2, the rear end contour of the hollow positioning groove 2 is set as a straight line (not consistent with the wavy shape of the tail end of the blade assembly). The arc-shaped tail end of the blade 3 placed in the positioning area of ​​this straight line contacts the straight line for positioning. Of course, it is also feasible for the rear end contour of the hollow positioning groove 2 to completely match the tail end contour of the blade assembly.

[0032] The width of the first positioning area 5 can be the same as or different from the width of the second positioning area 6. In other words, the number of blades 3 that can be placed in the first positioning area 5 and the number of blades 3 that can be placed in the second positioning area 6 can be the same or different.

[0033] Preferably, all first positioning areas 5 can hold the same number of blades 3, and all second positioning areas 6 can hold the same number of blades 3. The width of the second positioning area 6 is smaller than the width of the first positioning area 5 by the width of one blade 3. The center line of the width of the second area coincides with the center line of the width of the first positioning area 5, as shown in the figure. The space between the tail ends of the two blades 3 located at the front forms a clearance for the concave cutting edge 4 of the blade 3 located behind these two blades 3. Therefore, it is only necessary to set a clearance groove 7 for the concave cutting edge 4 of the blade 3 located in the frontmost first positioning area 5.

[0034] The hollow positioning groove 2 described in this embodiment is a continuous shape. If multiple hollowed-out parts are used to position the blades 3, it is impossible to achieve a close arrangement of the blades 3, which will increase the size of the tooling 1 and increase the processing difficulty of the hollow positioning groove 2.

[0035] When in use, place the fixture 1 on the worktable, and place the blades 3 into the hollow positioning slots 2 in sequence according to the pre-designed arrangement. Then, use the magnetic chuck on the equipment to hold the fixture 1 and blades 3 on the worktable to achieve grinding.

[0036] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A positioning fixture for quickly fixing a blade, characterized in that, It is a thin sheet of metal with a hollow positioning groove in the middle. The side wall of the hollow positioning groove surrounds and positions the blade placed in the hollow positioning groove.

2. The positioning fixture for quickly fixing the blade according to claim 1, characterized in that, The blade has a concave cutting edge at one end along its length for cutting wire, and the outline of the hollow positioning groove is consistent with the outline of a single blade.

3. The positioning fixture for quickly fixing the blade according to claim 2, characterized in that, The hollow positioning groove includes a clearance groove formed by extending away from the concave cutting edge of the corresponding blade.

4. The positioning fixture for quickly fixing the blade according to claim 1, characterized in that, The hollow positioning groove includes several first positioning areas and several second positioning areas. The first positioning areas and the second positioning areas alternate along the length direction of the blade. The width of each positioning area is an integer multiple of the width of a single blade. The contour of the second positioning area on each side in the width direction is offset outward or inward by half the width of a single positioning blade compared to the contour of the first positioning area on the same side.

5. The positioning fixture for quickly fixing the blade according to claim 4, characterized in that, The front of the positioning area where the hollow positioning groove is located extends away from the concave cutting edge of each blade to form an avoidance groove.

6. The positioning fixture for quickly fixing the blade according to claim 4 or 5, characterized in that, All first positioning areas can hold the same number of blades, and all second positioning areas can hold the same number of blades. The width of the second positioning area is smaller than the width of the first positioning area by the width of one blade. The center line of the width of the second area coincides with the center line of the width of the first positioning area.

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