Groove and bevel edge integrated forming tool

Abstract

The application discloses a groove-bevel edge integrated forming cutter, which comprises a cutter body (4), and a plurality of chip removal grooves (1) are arranged on the periphery of the cutter body, characterized in that a groove machining blade (6) and a bevel edge machining blade (8) are respectively arranged in each chip removal groove through a cutter seat (3), the groove machining blade (6) is arranged on the upper part, the bevel edge machining blade (8) is arranged on the lower part, and the groove machining blade (6) and the bevel edge machining blade (8) are connected to form an integrated cutting edge of a groove-bevel edge surface with an included angle greater than 90 degrees. According to the application, the groove-bevel edge forming can be realized by only one pass, the installation of the bevel edge machining blade adopts a cost-reducing design, and the design of the groove machining blade can avoid the generation of a tool joint mark.

Description

Technical Field

[0001] This invention relates to machining forming milling cutters, and in particular to a bevel and blunt edge integrated forming tool. Background Technology

[0002] In machining, the increasing prevalence of welding robots has led to increasingly stringent precision requirements for weld bevels and blunt edges when beveling various sheet metals. Furthermore, thin plates (thickness ≤ 6mm) experience significant thermal deformation and stress variations, making laser cutting insufficient to meet these precision requirements. Current thin-plate machining processes involve milling the perimeter first, followed by beveling, resulting in a naturally formed blunt edge. This process requires two tool changes and two pass-throughs to complete the beveling, resulting in low efficiency. For thick plates (thickness > 6mm), where the machining volume is large (e.g., 14mm thick welded assemblies in locomotive projects), while the same process of milling the perimeter first and then beveling is used, the longer beveling length necessitates multiple cutting edges, leaving tool marks on the machined surface after beveling. This requires further finishing, necessitating three different tool changes and three pass-throughs to complete the beveling, again resulting in low efficiency.

[0003] In addition, after using an electromagnetic platform to clamp the sheet metal for machining, iron filings are adsorbed onto the sheet metal. During beveling, the iron filings adsorbed on the surface to be machined will be rolled back into the machining process, resulting in unstable machining conditions. The high hardness of the iron filings will cause accelerated wear of the cutting tools during beveling and will easily lead to chipping. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the shortcomings of the low processing efficiency of existing welding beveling machines. The present invention provides an integrated beveling blunt edge forming tool that can achieve beveling blunt edge forming in only one pass.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A bevel and blunt edge integrated forming tool includes a tool body with multiple chip removal grooves around its periphery. Each chip removal groove is equipped with a bevel machining cutting edge and a blunt edge machining cutting edge via a tool holder. The bevel machining cutting edge is installed on the upper part, and the blunt edge machining cutting edge is installed on the lower part. The bevel machining cutting edge and the blunt edge machining cutting edge are connected to form a bevel and blunt edge profile integrated cutting edge with an included angle greater than 90 degrees.

[0007] This invention integrates the milling peripheral step and the milling bevel step into one, with the milling peripheral step and the milling bevel step installed in the same chip removal groove. The milling peripheral step and the milling bevel step can be completed in one pass, that is, the integrated combination of the bevel and the bevel can be formed in one pass.

[0008] Preferably, the blunt-edge machining cutting edges installed in adjacent chip removal grooves are staggered in the height direction to form blunt-edge profile cutting edges. The length of blunt-edge machining cutting edges is generally relatively long, with most blunt edges being 1-3 mm. By staggering the blunt-edge machining cutting edges installed in adjacent chip removal grooves in the height direction, while ensuring the effective machining edge length, the interchangeability of adjacent blunt-edge machining cutting edges can fully utilize the cutting edges for machining, thereby improving the tool utilization rate and reducing the cost of blunt-edge machining cutting edges during machining.

[0009] Preferably, the length of the beveling cutting edge is greater than the width of the beveling surface of the workpiece to avoid the generation of tool marks.

[0010] Preferably, the beveling cutting edges installed in adjacent chip removal grooves are joined together to form a complete beveling profile cutting edge. When the length of the beveling cutting edge is insufficient to complete the beveling of a thick plate in one pass, the beveling cutting edges installed in adjacent chip removal grooves can be joined together to form a longer beveling profile cutting edge to process the thick plate beveling.

[0011] Preferably, the beveling cutting edges installed in adjacent chip removal grooves overlap to form a complete beveling surface cutting edge. When the length of the beveling cutting edge is insufficient to complete the beveling of a thick plate in one pass, the beveling cutting edges installed in adjacent chip removal grooves can also overlap to form a long beveling surface cutting edge to process the thick plate beveling, thus avoiding the generation of tool marks.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1) This invention combines the peripheral milling step and the bevel milling step of sheet metal into one, improving processing efficiency by 100%;

[0014] 2) The present invention performs the milling peripheral step and the milling bevel step simultaneously, which avoids the problem that when the plate is clamped by an electromagnetic platform in the original process, after the milling peripheral step is completed, the iron filings are adsorbed on the surface to be processed. When the bevel step is milled, the adsorbed iron filings will be rolled back into the processing, which will have an adverse effect on the bevel processing.

[0015] 3) The milling peripheral steps and milling bevel steps of this invention are completed in one pass, ensuring the quality stability and consistency of the bevel and blunt edge. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a partial cross-sectional view of the present invention in use.

[0019] Figure 3 This is a schematic diagram of the installation of the blunt edge machining cutting edge of the present invention.

[0020] Figure 4 This is a schematic diagram showing the replacement and installation of the blunt edge machining cutting tool of the present invention after a certain period of use. Detailed Implementation

[0021] The present invention will be further described below with reference to specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0022] For ease of description, the relative positions of the components, such as top, bottom, left, right, etc., are described according to the layout direction of the accompanying drawings and do not limit the structure of this patent.

[0023] Please see Figure 1 , Figure 2 An embodiment of the bevel and blunt edge integrated forming tool of the present invention includes a tool body 4. The tool body 4 is provided with a plurality of chip removal grooves 1 around its periphery. Bevel processing cutting edges 6 and 7 and blunt edge processing cutting edges 5 and 8 are respectively installed in each chip removal groove 1 through a tool holder 3 and a fastening screw 9. The bevel processing cutting edges 6 and 7 are installed on the upper part, and the blunt edge processing cutting edges 5 and 8 are installed on the lower part. The bevel processing cutting edge 6 and the blunt edge processing cutting edge 8 (or the bevel processing cutting edge 7 and the blunt edge processing cutting edge 5) are connected to form a bevel and blunt edge profile integrated cutting edge with an included angle greater than 90 degrees.

[0024] Since the length of the blunt edge is about 1-3mm, the length of the cutting edge 5 and 8 for blunt edge machining can be greater than 5mm.

[0025] In one embodiment, the lengths of the blunt-edge machining cutting edges 5 and 8 are 10-12 mm. To save on the cost of using the blunt-edge machining cutting edges 8, the blunt-edge machining cutting edges 8 installed in adjacent chip removal grooves 1 are staggered in the height direction to form blunt-edge profile cutting edges. For example... Figure 3 As shown, the installation positions of adjacent blunt edge machining cutting edges can be offset vertically by 5mm. After the cutting edge segments a1, b2, a3, and b4 of the blunt edge machining cutting edge wear to the point of requiring replacement, as shown... Figure 4 The blades 1 and 2, and blades 3 and 4 can be swapped by translation. After the swap, the blades involved in the cutting process during the next machining operation will be... Figure 3 The cutting edge segments a2, b1, a4, and b3 that do not participate in cutting, i.e., a blunt edge machining cutting edge participates in cutting twice, thereby improving the cutting edge utilization rate.

[0026] In one embodiment, the lengths of the beveling cutting edges 6 and 7 are greater than the width of the bevel profile of the workpiece. Thus, the beveling cutting edges 6 and 7 can be joined without splicing to widen the bevel profile of the workpiece, avoiding the generation of tool marks on the bevel profile.

[0027] In one embodiment, because the plate to be processed is relatively thick and the bevel surface is relatively wide, the length of a single beveling cutting edge cannot meet the processing requirements of the bevel surface. Therefore, the beveling cutting edges 6 and 7 installed in adjacent chip removal grooves 1 are spliced ​​together to form a complete bevel surface cutting edge. To further avoid tool marks caused by splicing the beveling cutting edges, the beveling cutting edges 6 and 7 installed in adjacent chip removal grooves 1 are overlapped to form a complete bevel surface cutting edge.

[0028] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A bevel-edge integrated forming tool, comprising a tool body (4), wherein a plurality of chip removal grooves (1) are provided around the periphery of the tool body, characterized in that: Each chip removal groove is equipped with a bevel cutting edge (6) and a blunt edge cutting edge (8) through a tool holder (3). The bevel cutting edge (6) is installed on the upper part, and the blunt edge cutting edge (8) is installed on the lower part. The bevel cutting edge (6) and the blunt edge cutting edge (8) are connected to form a bevel and blunt edge profile integrated cutting edge with an included angle greater than 90 degrees. The blunt edge machining cutting edges (8) installed in adjacent chip removal grooves are staggered in the height direction to form blunt edge profile cutting edges, so that only a part of the cutting edge of each blunt edge machining edge participates in cutting. When the part of the cutting edge of each blunt edge machining edge reaches the wear and replacement condition, each blunt edge machining edge is translated and swapped, so that the cutting edge segment of each blunt edge machining edge that did not participate in cutting forms a new blunt edge profile cutting edge, that is, a blunt edge machining edge participates in cutting twice.

2. The integrated bevel and blunt edge forming tool according to claim 1, characterized in that, The length of the beveling cutting edge is greater than the width of the beveling profile of the workpiece.

3. The integrated bevel and blunt edge forming tool according to claim 1, characterized in that, The beveling cutting edges (6) installed in adjacent chip removal grooves are spliced ​​together to form a complete beveling surface cutting edge.

4. The integrated bevel and blunt edge forming tool according to claim 1, characterized in that, The beveling cutting edges (6) installed in adjacent chip removal grooves overlap each other to form a complete beveling surface cutting edge.

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