CN214769179U - Drill point for spray melting plate - Google Patents

Abstract

The utility model relates to a drill point device field especially relates to spout and melt board and use drill point. The drill edge part takes a rotation axis as a center to spirally form a first chip groove and a second chip groove which are arranged in tandem on the peripheral surface of the drill edge part, and the spiral angle of the first chip groove is larger than that of the second chip groove; due to the double-spiral groove angle design and the small knife sharp corner design, the rigidity of the front end of the drill needle is increased, the accelerated feeding is facilitated, the chip removal at the rear end is smooth, and the accelerated cutting and discharging are realized.

Description

Drill point for spray melting plate

Technical Field

The utility model relates to a drill point device field especially relates to spout and melt board and use drill point.

Background

The micro-holes of the melt-blown plate are generally processed by adopting the traditional electromachining and the common PCB micro-drilling, and the two processing modes have the defects of low precision, low efficiency, large feed resistance, unsmooth chip removal, poor cutter rigidity, easy drilling breakage and the like. Therefore, there is a great market demand for developing drill pins for use in micro holes in the machining industry.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a smooth and easy for spouting of chip removal spout drill point for melting plate of precision height.

The technical scheme of the utility model as follows:

the drill point for the melt spraying plate comprises a drill handle and a drill point connected with the drill handle, wherein the drill point comprises a drill edge part connected with the drill handle and a drill tip part at the front end; the drill bit is characterized in that the drill bit part takes a rotary axis as a center to form a first chip discharge groove and a second chip discharge groove in a spiral mode on the outer peripheral surface of the drill bit part, and the spiral angle of the first chip discharge groove is larger than that of the second chip discharge groove.

The length of the first chip groove is 1.0 mm-1.2 mm.

The spiral angle of the first chip groove is 28 degrees, and the spiral angle of the second chip groove is 35 degrees.

The core thickness of the drill point is 0.08mm-0.15 mm.

The point angle of the drilling tip of the drill point is 120 degrees.

The first chip discharge groove and the second chip discharge groove both extend spirally from the tip of the drill blade to the drill handle.

The utility model has the advantages that: due to the double-spiral groove angle design and the small knife sharp corner design, the rigidity of the front end of the drill needle is increased, the accelerated feeding is facilitated, the chip removal at the rear end is smooth, and the accelerated cutting and discharging are realized. The whole drill point keeps high rigidity and sharpness. The angle of the knife sharp is reduced, the drilling is convenient, the chip is easy to break, the knife is not easy to stick, and the method is suitable for being developed by the characteristic that the knife is stuck by stainless steel materials.

Drawings

The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.

Wherein: FIG. 1 is a schematic structural view of the present invention;

in the attached drawing, 1 is a drill handle, 2 is a drill point, 3 is a drill edge part, 4 is a drill point part, 5 is a first chip removal groove, and 6 is a second chip removal groove.

Detailed Description

Referring to fig. 1, the drill point for the melt spraying plate comprises a drill handle 1 and a drill point 2 connected with the drill handle, wherein the drill point comprises a drill blade part 3 connected with the drill handle and a drill tip part 4 at the front end; the drill bit is characterized in that a first chip groove 5 and a second chip groove 6 which are arranged in tandem are spirally formed on the outer peripheral surface of the drill bit by taking a rotation axis as a center, and the spiral angle B1 of the first chip groove is larger than the spiral angle B2 of the second chip groove. The drill point groove has two sections of spiral groove angles, and the main purpose is to increase the rigidity of the front end of the drill point, facilitate the accelerated feed of the drill point, smooth the chip removal of the rear end and accelerate the cutting discharge, so that the whole drill point keeps high rigidity and high sharpness and is not easy to break.

The length L2 of the first chip groove is 1.0 mm-1.2 mm.

The helical angle B1 of the first chip grooves is 28 degrees, and the helical angle B2 of the second chip grooves is 35 degrees. The design of double helix angles is adopted, the helix angle at the front end is 28 degrees, and the helix angle at the rear end is 35 degrees. The chip removal angle of the drill hole is changed, and the chip removal speed is accelerated.

The core thickness W of the drill point is 0.08mm-0.15 mm. The core thickness is increased, the rigidity of the drill point is ensured, and the drill point is not easy to break when being drilled.

The drilling point angle theta of the drilling tip part of the drill point is 120 degrees. The drill point angle becomes small, so that the drill is convenient to drill, chips are easy to break, and the cutter is not easy to stick.

The first chip discharge groove and the second chip discharge groove both extend spirally from the tip of the drill blade to the drill handle. And in the process that the first chip discharge groove extends towards the drill shank in a spiral mode, the spiral angle is gradually increased.

The clamping end of the knife handle is provided with a wear-resistant coating. The wear-resistant coating can be made of TiN and the like, so that the service life of the clamping end of the tool handle is longer.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the techniques of the present invention are substantially any simple modification and equivalent changes to the above embodiments, all falling within the protection scope of the present invention.

Claims (6)

1. The drill point for the melt spraying plate comprises a drill handle and a drill point connected with the drill handle, wherein the drill point comprises a drill edge part connected with the drill handle and a drill tip part at the front end; the drill bit is characterized in that the drill bit part takes a rotation axis as a center to form a first chip discharge groove and a second chip discharge groove which are arranged in tandem in a spiral mode on the peripheral face of the drill bit part, and the spiral angle of the first chip discharge groove is larger than that of the second chip discharge groove.

2. The drill point for the melt-blown plate according to claim 1, wherein the length of the first chip discharge groove is 1.0mm to 1.2 mm.

3. The drill point for the spray-melted plate as claimed in claim 1, wherein the helix angle of the first chip discharge groove is 28 ° and the helix angle of the second chip discharge groove is 35 °.

4. The drill point for the meltblown board of claim 1 wherein the core thickness of the drill point is between 0.08mm and 0.15 mm.

5. The drill point for a spray-smelting plate according to claim 1, wherein the point angle of the drill point portion of the drill point is 120 °.

6. The drill point for the melt-blown plate according to claim 1, wherein the first chip discharge groove and the second chip discharge groove each extend spirally from the tip of the drill blade toward the drill shank.

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