Arc bending knife for woodworking

Abstract

The utility model discloses an arc bending cutter for woodworking, belongs to the field of plate processing cutters, and solves the problems of low efficiency and poor quality caused by the fact that a plurality of cutters are required to process bending grooves in a plurality of procedures in the prior art. The cutter comprises a cutter handle and a cutter head arranged at one end of the cutter handle, the cutter head comprises a plurality of cutter holders evenly distributed on the periphery of the cutter head, a blade is fixedly installed on each cutter holder, and the outer wall face of each cutter holder is arranged in an arc shape in the circumferential direction. The outer wall faces of the tool aprons and the outer wall faces of the blades are arranged in a kidney shape with the upper ends and the lower ends being wide and the middle being narrow in the axial direction, the outer wall faces of the blades are higher than the outer wall faces of the tool aprons, the outer wall faces corresponding to the upper ends and the lower ends of the blades are straight faces, and a tool bit on one side of each tool apron is provided with a side chip groove which is sunken in the radial direction of the tool bit. The side wall of the side chip groove is flush with the side wall of the blade. According to the arc bending cutter, a bending groove can be rapidly machined, and the machining quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to plate processing cutter, more specifically, it relates to a circular bending knife for woodworking. BACKGROUND

[0002] In the processing of plate, especially in the processing of wood cabinet, in order to make the plate bend into a right angle, it is usually necessary to process a bending groove on the surface of wood, and the bending groove is a long strip-shaped groove with the upper and lower ends wide and the middle narrow, so that the plate can be folded along the bending groove to form a right angle. For such a bending groove processing, the traditional processing method is to use three different diameter cutters to process three times. First, a cylindrical cutter is used to mill a rectangular groove, then a disc cutter is used to mill a bottom groove with a width greater than that of the rectangular groove at the bottom of the rectangular groove, and finally another disc cutter is used to mill a top groove with a width greater than that of the rectangular groove at the top of the rectangular groove, so as to obtain the bending groove for bending. The traditional plate bending groove processing relies on multiple cutter processing and several processings, which not only has low processing efficiency, but also has low quality of the processed bending groove, which easily affects the plate bending.

[0003] Therefore, a circular bending knife for woodworking is proposed to solve the above problems. SUMMARY

[0004] The utility model solves the technical problem of the prior art, provides a circular bending knife for woodworking, which can realize rapid processing of a bending groove and improve processing quality.

[0005] The technical scheme of the utility model is as follows: a circular bending knife for woodworking, comprising a handle and a cutter head arranged at one end of the handle, wherein the cutter head comprises a plurality of cutter seats uniformly distributed on the periphery of the cutter head, each cutter seat is fixedly provided with a cutter blade, the outer wall surface of the cutter seat is arranged in a circular arc shape in the circumferential direction, the outer wall surfaces of the cutter seat and the cutter blade are both arranged in a waist shape with the upper and lower ends wide and the middle narrow in the axial direction, the diameter of the lower end of the cutter seat is greater than that of the upper end, the outer wall surface of the cutter blade is higher than that of the cutter seat, the outer wall surfaces of the upper and lower ends of the cutter blade are both straight surfaces extending along the axial direction of the cutter head, each cutter seat is provided with a side chip removal groove recessed along the radial direction of the cutter head on one side, the side wall of the side chip removal groove is flush with the side wall of the cutter blade, and the outer wall surface of the side chip removal groove is arranged in a waist shape with the upper and lower ends wide and the middle narrow in the axial direction, and the groove bottom of the side chip removal groove is tangent to the outer wall surface of the cutter seat.

[0006] As a further improvement, the side of the cutter seat close to the side chip removal groove is provided with a cutter groove, and the cutter blade is fixed in the cutter groove by welding.

[0007] Further, the lower end bottom surface of the cutter blade is higher than the lower end bottom surface of the cutter seat.

[0008] Further, the bottom chip removal groove is formed in the bottom end of the cutting head on one side of the blade.

[0009] Further, the depth of the bottom chip removal groove gradually decreases away from the one side of the blade.

[0010] Further, the bottom of the bottom chip removal groove comprises an arc surface, a first inclined surface and a second inclined surface, which are connected in sequence away from the one side of the blade, and the arc surface is tangent to the first inclined surface.

[0011] Further, the tangent position of the arc surface and the first inclined surface is below the side chip removal groove.

[0012] Further, the three cutting seats are provided, and correspondingly, the three blades are provided, and the three blades are installed on the three cutting seats one by one.

[0013] Further, the cutting handle, the cutting head and the cutting seat are integrated.

[0014] Advantages

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The arc bending tool of the utility model integrates the cutting seat and the blade in the shape of a waist on the cutting head, and the cutting is directly fed from the side of the plate during processing, so that a bending groove with a wide upper end and a narrow middle part can be obtained, and the bending groove can be completed by one-time milling, so that the bending groove can be quickly processed, and the processing quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic view of the three-dimensional structure of the utility model Figure 1 ;

[0018] Figure 2 is a schematic view of the three-dimensional structure of the utility model Figure 2 ;

[0019] Figure 3 is a schematic view of the front structure of the utility model;

[0020] Figure 4 is a schematic view of the left structure of the utility model;

[0021] Figure 5 is a schematic view of the right structure of the utility model.

[0022] Among them: 1-cutter handle, 2-cutter seat, 3-blade, 4-straight surface, 5-side chip removal groove, 6-bottom chip removal groove, 61-arc surface, 62-first inclined surface, 63-second inclined surface. DETAILED DESCRIPTION

[0023] The utility model makes further explanation in combination with specific embodiments in the drawings.

[0024] Referring to Figures 1-5 The utility model discloses a circular bending knife for woodworking, which comprises a handle 1 and a tool bit arranged at one end of the handle 1, wherein the tool bit comprises a plurality of tool seats 2 uniformly distributed on the periphery of the tool bit, each tool seat 2 is fixedly provided with a blade 3, the outer wall surface of the tool seat 2 is circularly arranged in an arc shape, and the tool seat 2 is of a streamline structure, so that the cutting resistance can be greatly reduced, the outer wall surface of the tool seat 2 and the blade 3 is arranged in a waist shape with wide upper and lower ends and narrow middle part in the axial direction, thereby forming a bending groove structure with wide upper and lower ends and narrow middle part, and the bending groove can be obtained through one-time milling, the diameter of the lower end of the tool seat 2 is larger than that of the upper end, so that the bending groove is convenient to bend, the outer wall surface of the blade 3 is higher than that of the tool seat 2, so that the blade 3 can be in contact with the plate first to form cutting, the outer wall surface of the upper end and the lower end of the blade 3 is a straight surface 4 extending along the axial direction of the tool bit, the straight surface structure of the blade 3 can reduce the risk of tool breakage in the machining process, thereby prolonging the service life of the tool, and the tool bit on one side of each tool seat 2 is provided with a side chip removal groove 5 recessed along the radial direction, the side wall of the side chip removal groove 5 is flush with the side wall of the blade 3, and the outer wall surface of the side chip removal groove 5 is arranged in a waist shape with wide upper and lower ends and narrow middle part in the axial direction, the groove bottom of the side chip removal groove 5 is tangent to the outer wall surface of the tool seat 2, so that the cutting waste can be conveniently discharged, thereby reducing the cutting resistance and improving the machining quality.

[0025] The circular bending knife can realize rapid machining of the bending groove and improve the machining quality.

[0026] Preferably, a tool groove is arranged on the side of the tool seat 2 close to the side chip removal groove 5, and the blade 3 is fixed in the tool groove through welding, so that the blade 3 can be conveniently fixed and installed, and the installation stability of the blade 3 can be improved.

[0027] Preferably, the lower end bottom surface of the blade 3 is higher than the lower end bottom surface of the tool seat 2, so that the blade 3 can be in contact with the plate first to form cutting.

[0028] Preferably, a bottom chip flute 6 is formed at the bottom end of the tool head on the side of the blade 3, facilitating the discharge of the bottom waste chip, further improving the chip removal performance and service life of the tool. Further, the depth of the bottom chip flute 6 gradually decreases away from the side of the blade 3. Specifically, the bottom of the bottom chip flute 6 includes an arc surface 61, a first inclined surface 62 and a second inclined surface 63, wherein the arc surface 61, the first inclined surface 62 and the second inclined surface 63 are connected in sequence along the side away from the blade 3, and the arc surface 61 is tangent to the first inclined surface 62, further facilitating the discharge of the waste chip, improving the chip removal performance and service life of the tool. Further, the tangent position of the arc surface 61 and the first inclined surface 62 is located below the side chip flute 5, so that the two chip flutes are connected, facilitating the discharge of the waste chip in the middle of the blade 3, and further improving the chip removal performance.

[0029] Preferably, the tool seat 2 has three, and correspondingly, the blade 3 has three, and the three blades 3 are installed on the three tool seats 2 one by one, forming a three-blade circular-arc bending tool, meeting the cutting use requirements, while effectively reducing the cost. Further, the tool handle 1, the tool head and the tool seat 2 are of an integrated structure, facilitating the machining and manufacturing, while improving the structural strength of the entire tool.

[0030] The above only describes the preferred embodiments of the present application, and it should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which will not affect the effect and practicality of the present application.

Claims

1. A woodworking curved bending knife, comprising a handle (1) and a cutting head disposed at one end of the handle (1), characterized in that, The cutting head includes multiple cutter holders (2) evenly distributed around the periphery of the cutting head. Each cutter holder (2) is fixedly mounted with a blade (3). The outer wall of the cutter holder (2) is arc-shaped in the circumferential direction. The outer walls of the cutter holder (2) and the blade (3) are both waist-shaped in the axial direction, which is wider at the top and bottom and narrower in the middle. The diameter of the lower end of the cutter holder (2) is larger than the diameter of the upper end. The outer wall of the blade (3) is higher than the outer wall of the cutter holder (2). The outer walls of the upper and lower ends of the blade (3) are straight surfaces (4) extending along the axial direction of the cutting head. Each cutter holder (2) has a side chip removal groove (5) that is recessed radially on one side of the cutting head. The side wall of the side chip removal groove (5) is flush with the side wall of the blade (3). The outer wall of the side chip removal groove (5) is waist-shaped in the axial direction, which is wider at the top and bottom and narrower in the middle. The bottom of the side chip removal groove (5) is tangent to the outer wall of the cutter holder (2).

2. The woodworking arc bending knife according to claim 1, characterized in that, The tool holder (2) has a tool groove on the side near the side chip removal groove (5), and the blade (3) is fixed in the tool groove by welding.

3. A woodworking arc bending knife according to claim 1, characterized in that, The bottom surface of the blade (3) is higher than the bottom surface of the blade holder (2).

4. A woodworking arc bending knife according to claim 3, characterized in that, A bottom chip removal groove (6) is provided on the bottom surface of the lower end of the blade (3) on one side.

5. A woodworking arc bending knife according to claim 4, characterized in that, The depth of the bottom chip removal groove (6) gradually decreases along the side away from the blade (3).

6. A woodworking arc bending knife according to claim 5, characterized in that, The bottom of the chip removal groove (6) includes an arc-shaped surface (61), a first inclined surface (62), and a second inclined surface (63). The arc-shaped surface (61), the first inclined surface (62), and the second inclined surface (63) are connected in sequence along the side away from the blade (3), and the arc-shaped surface (61) is tangent to the first inclined surface (62).

7. A woodworking arc bending knife according to claim 6, characterized in that, The tangent position between the arc-shaped surface (61) and the first inclined surface (62) is located below the side chip removal groove (5).

8. A woodworking arc bending knife according to any one of claims 1-7, characterized in that, There are three tool holders (2), and correspondingly, there are three blades (3). The three blades (3) are installed on the three tool holders (2) one by one.

9. A woodworking arc bending knife according to claim 8, characterized in that, The tool holder (1), tool head, and tool holder (2) are an integral structure.

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