CN211331631U

CN211331631U - Fillet forming integrated cutter

Info

Publication number: CN211331631U
Application number: CN201922276984.7U
Authority: CN
Inventors: 梁晓铧; 唐志锋
Original assignee: Shenzhen Taikesite Precision Industry Co ltd
Current assignee: Shenzhen Taikesite Precision Industry Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-08-25
Anticipated expiration: 2029-12-16

Abstract

The utility model discloses a fillet shaping integrated into one piece cutter, include: the cutter body is cylindrical, an installation part is arranged on the cutter body, the blade is fixed on the installation part, a V-shaped knife edge is formed on the blade, and an arc-shaped knife edge is connected to the bottom of the V-shaped knife edge; and a circle of V-shaped avoiding groove is arranged on the cutter body corresponding to the position of the V-shaped knife edge, and the V-shaped avoiding groove is arranged around the cutter body. The utility model discloses a rounding shaping integral cutting tool is through setting up the V-arrangement edge of a knife on the cutter body to set up the arc edge of a knife in edge of a knife bottom, carry out the fillet processing to the circuit board. The V-shaped knife edge can effectively remove burrs on two sides of the circuit board, the arc-shaped knife edge enables the edge of the processed circuit board to be in an R-angle shape with two concave sides and a convex middle part, the edge of the circuit board is smooth, the circuit board stacked adjacent to the circuit board cannot be scratched due to sharp edge of the circuit board when the circuit board is stacked, and the product quality is greatly improved.

Description

Fillet forming integrated cutter

Technical Field

The utility model relates to a circuit board production technical field especially relates to a rounding shaping integrative cutter.

Background

In the rounding process of the circuit board, a cutter used by the traditional rounding is a four-edge or multi-edge cutter or a corn-shaped milling cutter used by a PCB forming machine. During operation, a PCB substrate of a machined part is fixed, the cutter spindle clamps the milling cutter to rotate at a high speed, the cutter rotating at a high speed cuts four right angles at the edge of a circuit board, and the four right angles are turned into four round corners. As shown in fig. 1, when chamfering is performed by using a multi-edge or corn milling cutter, a cutting direction is formed at a rotating edge of the cutter, and burrs remain on the edge of the circuit board a' and cannot be removed. The cut side face and the board face form a right angle, if the circuit boards A' are stacked, burrs at the right angle can scratch the board faces of the circuit boards stacked together with the circuit boards, and the product is damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rounding shaping integrative cutter, when using this cutter to carry out the chamfer, the V-arrangement edge of a knife can be got rid of both sides burr effectively, and the edge of circuit board is convex R angular form in the middle of the two-sided concave yield, and the flange limit is level and smooth, when the circuit board piles up, is difficult for causing by the condition of burr scratch.

The technical scheme of the utility model as follows: the utility model provides a rounding angle forming integrated cutter, which comprises a cutter body and a blade, wherein the cutter body is cylindrical, the cutter body is provided with an installation part, the blade is fixed on the installation part, a V-shaped knife edge is formed on the blade, and the bottom of the V-shaped knife edge is connected with an arc-shaped knife edge; and a circle of V-shaped avoiding groove is arranged on the cutter body corresponding to the position of the V-shaped knife edge, and the V-shaped avoiding groove is arranged around the cutter body.

Further, the number of the blades is 2, and the two blades are symmetrically distributed on two sides of the cutter body.

Further, the opening angle of the V-shaped knife edge is 100 +/-5 degrees, and the opening length of the V-shaped knife edge is 4.2-4.5 mm.

Furthermore, the radian radius of the arc-shaped knife edge is 0.3-0.4mm, the arc length of the arc-shaped knife edge is 0.4-0.5mm, and the distance from the bottommost end of the arc-shaped knife edge to one surface of the knife body, on which the blade is embedded, is 0.6-0.8 mm.

Further, the blade is in a sheet shape, and the thickness of the blade is 2.2-2.8 mm.

Further, the cutter body is alloy steel material, the blade is diamond compact piece.

Further, the blade is embedded on the cutter body in a welding mode.

Furthermore, one side of the blade is provided with the V-shaped avoiding groove, the other side of the blade is provided with an avoiding part, and the avoiding part is a hollow part.

Adopt above-mentioned scheme, the utility model discloses an integrative cutter of fillet shaping, through being equipped with the V-arrangement edge of a knife, just V-arrangement edge of a knife bottom links up a level and smooth arc edge of a knife, adds man-hour to the fillet of circuit board, and the V-arrangement edge of a knife can get rid of the burr of both sides effectively, and the arc edge of a knife of bottom makes the edge of circuit board be convex R angle shape in the middle of the two sides concave yield, and the flange is level and smooth, is difficult for causing mutual scratch when the circuit board piles up, has improved the quality of.

Drawings

Fig. 1 is a schematic side view of a circuit board after rounding in the prior art.

Fig. 2 is the utility model discloses fillet shaping integrative cutter fillet processing back side view.

Figure 3 is the utility model discloses the side schematic diagram of the integrative cutter of fillet shaping.

Fig. 4 is a schematic view of the arc-shaped knife edge of the rounding integrated cutter according to the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 3 to 4, the present invention provides a rounding integrated tool, which includes: cutter body 1 and blade 2, cutter body 1 is cylindrical, be equipped with installation department 11 on the cutter body 1, blade 2 is fixed in installation department 11, installation department 11 is one and locates opening on the cutter body 1, blade 2 welding inlay in the opening. The blade 2 is provided with a V-shaped knife edge 21, and the bottom of the V-shaped knife edge 21 is connected with an arc-shaped knife edge 22. The cutter body 1 is the alloy steel material, blade 2 is the diamond compact piece, and its texture is hard, satisfies the cutting demand to circuit board fillet. Correspond the V-arrangement edge of a knife position of blade 2, be equipped with round V-arrangement on the cutter body 1 and dodge the groove (not shown in the figure), the groove is dodged to the V-arrangement encircles cutter body 1 sets up, the V-arrangement dodges the groove and is convenient for the rapid rotation of cutter when the radius angle operation to make things convenient for the chip removal. The V-shaped avoiding groove is formed in one side of the blade 2, and the avoiding portion is formed in the other side of the blade and used for temporarily containing cut material scraps and specifically is a hollow portion. Preferably, the number of the blades 2 is two, the two blades are symmetrically distributed on two sides of the cutter body 1 and correspond to the two blades 2, two mounting portions 11 are arranged on the cutter body 1, and the two blades 2 are respectively mounted in the two mounting portions 11.

Specifically, the V-shaped knife edge 21 is a V-shaped groove formed on the blade 2 by grinding, the opening angle α of the V-shaped knife edge is 100 ± 5 °, the opening length L of the V-shaped knife edge 21 is 4.2-4.5mm, and the length L' of the blade 2 in this embodiment is 10 mm. The radian radius R of the arc-shaped knife edge 22 is 0.3-0.4mm, the arc length of the arc-shaped knife edge 22 is 0.4-0.5mm, and the distance H from the bottommost end of the arc-shaped knife edge 22 to the surface, embedded in the knife body 1, of the blade 2 is 0.6-0.8mm, wherein the distance H is not too small, otherwise the blade 2 is cracked or broken at the position due to long-time abrasion, and the service life of the blade is influenced. The thickness M of the blade 2 is 2.2-2.8 mm. The blade 2 can be used for processing a circuit board with the thickness of 0.2-0.4mm, and the rotating speed of the cutter body is controlled at 6000 and 7500 RPM. Through repeated experiments, under the parameter setting, the processed circuit board is basically free of burrs, and as shown in fig. 2, the edge of the circuit board A after fillet processing is in an R-angle shape with two concave surfaces and a convex middle part, so that the circuit board A cannot be scratched when being stacked, and the product quality is greatly improved. It should be mentioned that, the rounding angle processing of the circuit board with different thickness can be realized by adjusting various numerical parameters of the blade 2, such as the opening angle α, the opening length L, the radian radius R, and the like, and the method also belongs to the protection scope of the present patent application.

To sum up, the utility model provides a rounding shaping integral type cutter, the applicant is through a large amount of experimental study, through setting up the V-arrangement edge of a knife on the cutter body to set up the arc edge of a knife in V-arrangement edge of a knife bottom, carry out the radius angle processing to the circuit board. The V-shaped knife edge can effectively remove burrs on two sides of the circuit board, the edge of the processed circuit board is in an R-angle shape with two concave sides and a convex middle part due to the arrangement of the arc-shaped knife edge, the edge of the circuit board is smooth, the circuit board stacked adjacent to the edge of the circuit board cannot be scratched due to sharp edge of the circuit board when the circuit board is stacked, and the quality of products is greatly improved. The utility model discloses an integrative cutter of fillet shaping reforms transform through the blade, has realized the improvement greatly of circuit board fillet technology, has improved product quality, has created very big economic value, is worth wideling popularize and use.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an integrative cutter of fillet shaping which characterized in that includes: the cutter body is cylindrical, an installation part is arranged on the cutter body, and the blade is fixed on the installation part; a V-shaped knife edge is formed on the blade, and an arc-shaped knife edge is connected to the bottom of the V-shaped knife edge; and a circle of V-shaped avoiding groove is arranged on the cutter body corresponding to the position of the V-shaped knife edge, and the V-shaped avoiding groove is arranged around the cutter body.

2. The radius forming integrated tool according to claim 1, wherein the number of the blades is 2, and the two blades are symmetrically distributed on two sides of the tool body.

3. The rounded, formed, unitary tool according to claim 1, wherein the opening angle of the V-shaped edge is 100 ± 5 °, and the opening length of the V-shaped edge is 4.2-4.5 mm.

4. The rounding integral tool according to claim 1, wherein the radius of curvature of the curved edge is 0.3-0.4mm, the length of the curved edge is 0.4-0.5mm, and the distance from the bottom end of the curved edge to the face of the insert embedded in the tool body is 0.6-0.8 mm.

5. The rounded, integrally formed cutting tool according to claim 1 or 2, wherein the cutting insert is in the form of a sheet and has a thickness of 2.2-2.8 mm.

6. The rounded, formed and integrated cutter of claim 1, wherein the cutter body is an alloy steel material and the blades are diamond compacts.

7. The radius integrally formed cutter according to claim 1 or 6, wherein the insert is embedded in the cutter body by welding.

8. The rounded corner forming integral tool according to claim 1, wherein the V-shaped avoiding groove is formed on one side of the blade, and an avoiding portion is formed on the other side of the blade, and the avoiding portion is a hollow portion.