CN219445619U - Drilling tool for ceramic products with surface coating - Google Patents

Abstract

The utility model provides a drilling tool for a ceramic product with a surface coating, which comprises a handle and a polycrystalline diamond tool bit arranged at one end of the handle, wherein at least two first cutting edges are arranged on the periphery of the polycrystalline diamond tool bit, the first cutting edges spirally extend from one end close to the handle to one end, far away from the handle, of the polycrystalline diamond tool bit, and the at least two first cutting edges are connected at one end, far away from the handle, of the polycrystalline diamond tool bit. Foretell drilling tool, through setting up the material with polycrystalline diamond tool bit into polycrystalline diamond and through being two first cutting edges that the heliciform extends to ceramic product surface coating drilling, can solve drilling tool and glue bits, wearing and tearing are fast, the cladding layer burn, cladding layer surface quality is poor, machining efficiency is low and the problem that processing life is short when processing to effectively improved drilling tool's cutting process life and yield, thereby reduced manufacturing cost.

Description

Drilling tool for ceramic products with surface coating

Technical Field

The utility model relates to the technical field of grinding, in particular to a drilling tool for a ceramic product with a surface coating.

Background

Currently, a filter is a core component of a base station radio frequency, and the filter mainly functions to pass specific frequency components in a transmission signal and a reception signal, and greatly attenuate other frequency components. The base station filter mainly comprises a metal coaxial cavity, ceramic dielectric resonance and ceramic dielectric, and along with the development of 5G technology, the ceramic dielectric filter gradually replaces the traditional metal cavity filter to become the mainstream. However, the ceramic dielectric filter has excellent performance, but the CNC silver layer removing procedure is difficult to process, and the electroplated diamond tool used in the conventional processing is easy to have the defects of low service life, poor processing quality, high cost and the like.

Disclosure of Invention

In view of the above, it is necessary to provide a drilling tool for ceramic products with surface coating, so as to solve the technical problems of low service life, poor processing quality and high cost of the existing tools for ceramic products with surface coating.

The utility model provides a drilling tool for a ceramic product with a surface coating, which comprises a handle and a polycrystalline diamond tool bit arranged at one end of the handle, wherein at least two first cutting edges are arranged on the periphery of the polycrystalline diamond tool bit, the first cutting edges spirally extend from one end close to the handle to one end, far away from the handle, of the polycrystalline diamond tool bit, and the at least two first cutting edges are connected at one end, far away from the handle, of the polycrystalline diamond tool bit.

According to the drilling tool, the ceramic product surface coating is drilled through the at least two first cutting edges which spirally extend the polycrystalline diamond tool bit, the problems that the drilling tool is sticky during machining, abrasion is fast, the coating is burnt, the coating surface quality is poor, the machining efficiency is low and the machining service life is short can be solved, the cutting service life and the yield of the drilling tool are effectively improved, and accordingly the production cost is reduced.

In some embodiments, the ratio of the length of the polycrystalline diamond tip to the diameter of the polycrystalline diamond tip ranges from 0.7 to 0.8.

In some embodiments, the length of the handle ranges from 10mm to 30mm.

In some embodiments, the cutting tool further comprises at least two second cutting edges, each second cutting edge is disposed between two adjacent first cutting edges, at least two second cutting edges extend helically from an end near the shank to an end of the polycrystalline diamond tip remote from the shank, and the two second cutting edges are spaced apart at an end of the polycrystalline diamond tip remote from the shank.

In some embodiments, the first cutting edge and the second cutting edge are equally spaced from the outer periphery of the polycrystalline diamond cutter.

In some embodiments, a clearance chip removal region is provided between the first cutting edge and the second cutting edge or between two adjacent second cutting edges.

In some embodiments, a transition is further included, the transition being disposed between the handle and the polycrystalline diamond tip to connect the handle and the polycrystalline diamond tip.

In some embodiments, the transition is an arcuate structure recessed toward an axis of the transition.

In some embodiments, an edge of the cross-section of the transition adjacent the shank is a multi-segment polyline shape.

In some embodiments, the polycrystalline diamond tip and the handle are connected by vacuum brazing.

Drawings

Fig. 1 is a schematic perspective view of a drilling tool according to an embodiment of the present utility model.

Fig. 2 is a left side view of the drilling tool of fig. 1.

Fig. 3 is a gray scale of a surface coating of a ceramic product after the surface of the ceramic product is processed by a conventional electroplated diamond tool.

Fig. 4 is a gray scale of the surface coating of the ceramic product after the drilling tool shown in fig. 1 processes the surface of the ceramic product.

Description of the main reference signs

Drilling tool 100

Handle 10

Polycrystalline diamond tip 20

First cutting edge 30

Second cutting edge 40

The void clearance area 50

Transition 60

Ceramic product 200

Hole 210

Diameter D

Length L, T

Axis l

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Embodiments of the present utility model will be further described with reference to the accompanying drawings.

Referring to fig. 1 and 4, an embodiment of the present utility model proposes a drilling tool 100 for drilling 210 a ceramic product 200 with a surface coating, wherein the ceramic product 200 is a 5G ceramic filter; the plating layer is a silver plating layer or an aluminum plating layer. Specifically, drilling tool 100 includes a shank 10 and a polycrystalline diamond cutter 20.

Referring also to fig. 2, the handle 10 is cylindrical. The polycrystalline diamond cutter head 20 is arranged at one end of the handle 10, two first cutting edges 30 for drilling are arranged on the periphery of the polycrystalline diamond cutter head 20, the two first cutting edges 30 spirally extend from one end close to the handle 10 to one end, far away from the handle 10, of the polycrystalline diamond cutter head 20, and the two first cutting edges 30 are connected at one end, far away from the handle 10, of the polycrystalline diamond cutter head 20. In this embodiment, a single polycrystalline diamond is included in polycrystalline diamond cutter 20.

According to the drilling tool 100, the two first cutting edges 30 of the polycrystalline diamond tool bit 20, which extend in a spiral shape, are used for drilling 210 the surface coating of the ceramic product 200, so that the problems of chip sticking, rapid abrasion, coating burn, poor coating surface quality, low machining efficiency and short machining life of the drilling tool 100 during machining can be solved, the cutting machining life and yield of the drilling tool 100 are effectively improved, and the production cost is reduced; as shown in fig. 3, the conventional electroplated diamond tool has the problem of chip sticking after the surface coating of the ceramic product 200 is processed, and as shown in fig. 4, the drilling tool 100 in the scheme has no problem of chip sticking after the surface coating of the ceramic product 200 is processed, and the surface coating quality of the ceramic product 200 is good.

In some embodiments, the ratio of length L of polycrystalline diamond tip 20 to maximum diameter D of polycrystalline diamond tip 20 ranges from 0.7 to 0.8. In this way, the rigidity of polycrystalline diamond tip 20 can be improved.

In some embodiments, the length T of the handle 10 ranges from 10mm to 30mm. In this manner, the grip of the shank 10 can be facilitated by gripping means, including but not limited to, a machine tool spindle.

In some embodiments, drilling tool 100 further comprises at least two second cutting edges 40, each second cutting edge 40 disposed between two adjacent first cutting edges 30, at least two second cutting edges 40 extending helically from an end proximate shank 10 to an end of polycrystalline diamond tip 20 distal shank 10, and two second cutting edges 40 being spaced apart at an end of polycrystalline diamond tip 20 distal shank 10. In the present embodiment, the number of the second cutting edges 40 is four, and every two second cutting edges 40 are disposed opposite to each other, so that sharpness of the drilling tool 100 can be improved, thereby reducing the cutting shortage of the drilling tool 100.

In some embodiments, first cutting edge 30 and second cutting edge 40 are equally spaced about the periphery of polycrystalline diamond cutter 20. In this way, uniformity of cutting force of the first cutting edge 30 and the second cutting edge 40 on the surface plating layer of the ceramic product 200 can be ensured.

In some embodiments, a clearance region 50 is provided between the first cutting edge 30 and the second cutting edge 40 or between two adjacent second cutting edges 40, so that chips during processing can be easily discharged.

In some embodiments, drilling tool 100 further comprises a transition 60, transition 60 being disposed between shank 10 and polycrystalline diamond tip 20, wherein a maximum diameter of polycrystalline diamond tip 20 is smaller than a diameter of shank 10, transition 60 being used to transition shank 10 and polycrystalline diamond tip 20.

In this embodiment, the transition portion 60 is an arc-shaped structure recessed toward the axis l of the transition portion 60, and the arc-shaped structure is substantially U-shaped, so that the processing of the transition portion 60 is facilitated and the processing cost is saved. It will be appreciated that in other embodiments, one side of the cross-section of the transition 60 adjacent the shank 10 is in the shape of a multi-segment polyline, but is not so limited.

In some embodiments, polycrystalline diamond tip 20 and the handle are connected by vacuum brazing. In the present embodiment, the shank 10 is made of tungsten steel.

The above-mentioned working process of obtaining the drilling tool 100 for the surface coating of the ceramic product 200 is:

firstly, cutting a tungsten steel base material by adopting numerical control wire cutting equipment, and performing rough grinding after cutting to obtain a handle 10; then cleaning the handle 10, and welding the polycrystalline diamond cutter head 20 at one end of the handle 10 after cleaning; then performing appearance detection, fine grinding the handle 10, performing contour trimming on the polycrystalline diamond cutter head 20 through a spark machine, sharpening the polycrystalline diamond cutter head 20 through laser to obtain a first cutting edge 30 and a second cutting edge 40, cleaning after sharpening, and obtaining the drilling tool 100 after the appearance detection is qualified; finally, the shank 10 of the drilling tool 100 is held using a holding device, such as a machine tool spindle, and the polycrystalline diamond cutter head 20 is driven to rotate, thereby causing the polycrystalline diamond cutter head 20 to abrade the surface coating of the ceramic product 200.

The drilling tool 100 of the utility model improves sharpness, reduces cutting deficiency and improves cutting chip removal capability by using the polycrystalline diamond tool bit 20, thereby meeting larger cutting amount, improving machining efficiency, avoiding continuous machining caused by carbonization of a metal layer bonded on the surface of the drilling tool 100, prolonging machining life, improving wear resistance, improving surface coating quality of ceramic product 200, obviously improving machining life, reducing machine adjustment times and reducing machining cost. The cutting tool amount is increased by more than two times, the processing efficiency is increased by more than two times, and the processing service life is increased by more than 20 times.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (10)

1. The utility model provides a drilling tool for having ceramic product of surface coating, its characterized in that includes the stalk portion and locates the polycrystalline diamond tool bit of stalk portion one end, the periphery of polycrystalline diamond tool bit is equipped with two at least first cutting edges, first cutting edge is the heliciform from being close to the one end of stalk portion extends to the polycrystalline diamond tool bit is kept away from the one end of stalk portion, and two at least first cutting edge is in the polycrystalline diamond tool bit is kept away from the one end of stalk portion is connected.

2. The drilling tool of claim 1, wherein a ratio of a length of the polycrystalline diamond tip to a maximum diameter of the polycrystalline diamond tip ranges from 0.7 to 0.8.

3. The drilling tool of claim 2, wherein the shank has a length in the range of 10mm to 30mm.

4. The drilling tool of claim 1, further comprising at least two second cutting edges, each second cutting edge disposed between two adjacent first cutting edges, at least two of the second cutting edges extending helically from an end proximate the shank to an end of the polycrystalline diamond cutter distal the shank, and the two second cutting edges being spaced apart at the end of the polycrystalline diamond cutter distal the shank.

5. The drilling tool of claim 4, wherein the first cutting edge and the second cutting edge are equally spaced about the outer periphery of the polycrystalline diamond cutter.

6. The drilling tool of claim 5, wherein a clearance region is provided between the first cutting edge and the second cutting edge or between two adjacent second cutting edges.

7. The drilling tool of claim 1, further comprising a transition portion disposed between the shank and the polycrystalline diamond tip to connect the shank and the polycrystalline diamond tip.

8. The drilling tool of claim 7, wherein the transition portion is an arcuate structure recessed toward an axis of the transition portion.

9. The drilling tool of claim 7, wherein an edge of the cross-section of the transition adjacent the shank is a multi-segment polyline shape.

10. The drilling tool of claim 1, wherein the polycrystalline diamond cutter head and the shank are connected by vacuum brazing.