CN210829086U

CN210829086U - Drill bit welded by friction pressure

Info

Publication number: CN210829086U
Application number: CN201921435294.5U
Authority: CN
Inventors: 王进海; 许战波; 肖智广; 许岩波; 马武祥
Original assignee: Louyang Hengnuo Anchor Technology Co ltd
Current assignee: Louyang Hengnuo Anchor Technology Co ltd
Priority date: 2019-08-31
Filing date: 2019-08-31
Publication date: 2020-06-23
Anticipated expiration: 2029-08-31

Abstract

The utility model belongs to the technical field of soil layer or rock stratum creep into. A drill bit adopting friction pressure welding comprises a cutting part and a connecting handle, wherein a threaded hole is formed in a first end part of the connecting handle, and a second end part of the connecting handle is coaxially connected with the cutting part; and the second end part of the connecting handle and the cutting part are welded and fixed through friction pressure welding. The utility model discloses can reach and shorten the processing technology flow, reduce process time's purpose, this application is still through friction pressure welding, and not only the welding is reliable, and stability is good, and the drill bit machining precision is guaranteed moreover, can guarantee screw thread precision and other structures and design size's coordination uniformity in whole manufacture process for the qualification rate and the quality of whole drill bit obtain further promotion.

Description

Drill bit welded by friction pressure

Technical Field

The utility model belongs to the technical field of soil layer or rock stratum creep into, concretely relates to adopt friction pressure welded drill bit.

Background

The self-drilling anchoring system is used as an effective method for improving the stability of geotechnical engineering, is widely applied to the construction processes of railway, tunnel construction, mining industry and building foundation pit support at home and abroad, and is an ideal implementation mode for in-situ reinforcement of broken and weak surrounding rocks and soil foundations. The self-drilling anchoring system has the characteristic that drilling, injection and anchoring can be realized by one-time drilling, so that the self-drilling anchoring system has the characteristics of rapidness, simplicity, convenience, economy and applicability.

The problems existing in the prior art are as follows: the existing self-drilling type drill bit, particularly a large-diameter drill bit, is difficult to popularize due to the fact that the shape is complex, threads of a connecting handle portion need high precision, production and machining are usually achieved through an investment casting process, and the process has the problems of long machining process route, complex process, high requirement, long machining time, high cost and the like, and accordingly the cost of a constructed material is high.

Disclosure of Invention

The utility model discloses the purpose is to the problem that above-mentioned exists with not enough, provides an adopt friction pressure welded drill bit and processing technology, and it can shorten the processing technology flow, improves machining efficiency to improve the machining precision.

In order to realize the purpose, the adopted technical scheme is as follows:

a drill bit employing friction pressure welding, comprising:

a cutting portion; and

the first end part of the connecting handle is provided with a threaded hole, and the second end part of the connecting handle is coaxially connected with the cutting part;

and the second end part of the connecting handle and the cutting part are welded and fixed through friction pressure welding.

According to the utility model discloses a friction pressure welded drill bit, preferably, the connecting handle is the steel pipe, the screw hole passes through the lathe work shaping.

According to the utility model discloses a friction pressure welded drill bit, preferably, the cutting portion includes: a substrate;

a first cutting head provided at an end of the base; and

a second cutting head disposed at a side of the base, the second cutting head including at least three circumferentially equispaced cutting edges.

According to the utility model discloses a friction pressure welded drill bit, preferably, first cutting head is cross drill bit or ball tooth drill bit.

According to the utility model discloses a friction pressure welded drill bit, preferably, the cutting portion is provided with water hole and chip groove, the water hole with the screw hole intercommunication.

By adopting the technical scheme, the beneficial effects are as follows:

the utility model discloses a carry out the split to the part of difference, and then make through different technologies to can reach and shorten the processing technology flow, reduce process time's purpose, this application is still through friction pressure welding, not only the welding is reliable, and stability is good, and the drill bit machining precision is guaranteed moreover, can guarantee screw thread precision and other structures and design size's coordination uniformity in whole manufacturing process, makes the qualification rate and the quality of whole drill bit obtain further promotion.

The drilling part of this application can adopt sand casting to accomplish the drilling part, and it is for traditional production technology, not only greatly reduced processing technology's time and degree of difficulty, reduced the cost of production moreover, the mass production operation of being convenient for.

No matter from local part structure to holistic structure, the application all can realize the batched operation to simplified processing technology, helped promoting and applying.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. The drawings are intended to depict only some embodiments of the invention, and not all embodiments of the invention are limited thereto.

Fig. 1 is a schematic structural view of a drill bit welded by friction pressure according to an embodiment of the present invention.

Fig. 2 is one of the schematic perspective views of a drill bit welded by friction pressure according to an embodiment of the present invention.

Fig. 3 is a schematic view of a second three-dimensional structure of a drill bit welded by friction pressure according to an embodiment of the present invention.

Number in the figure:

100 is a connecting handle, 101 is a threaded hole;

200 is a cutting part, 201 is a base body, 202 is a first cutting head, 203 is a second cutting head, 204 is a water hole, and 205 is a chip groove;

300 is a weld.

Detailed Description

The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art.

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for describing various elements of the present invention, and do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

It should be noted that when an element is referred to as being "connected," "coupled," or "connected" to another element, it can be directly connected, coupled, or connected, but it is understood that intervening elements may be present therebetween; i.e., positional relationships encompassing both direct and indirect connections.

It should be noted that the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.

It should be noted that terms indicating orientation or positional relationship such as "upper", "lower", "left", "right", and the like, are used only for indicating relative positional relationship, which is for convenience of describing the present invention, and not that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation; when the absolute position of the object to be described is changed, the relative positional relationship may also be changed accordingly.

Referring to fig. 1 to 3, the present application discloses a drill bit using friction pressure welding, including a cutting part 200 and a connecting shank 100, a first end of the connecting shank 100 is provided with a threaded hole 101, and a second end of the connecting shank 100 is coaxially connected with the cutting part 200; the second end of the stem 100 is fixed to the cutting part 200 by friction pressure welding.

The connecting handle 100 in the embodiment is a seamless steel pipe, so that blanking is facilitated, the performance of the connecting handle can be effectively guaranteed, the threaded hole is formed by turning, the precision is high, and the connecting handle and the cutting part can be formed by different processes respectively, so that the machining process is simplified.

Further, the cutting portion in the present application includes a base body 201, a first cutting head 202 and a second cutting head 203, the first cutting head 201 being provided at an end of the base body 201; the second cutting head 203 is arranged at the side part of the base body 201, and the second cutting head 203 comprises at least three cutting edges which are uniformly distributed in the circumference; the first cutting head in this embodiment may be a cross bit or a button bit, and a water hole 204 and a chip groove 205 are further provided on the cutting portion, and the water hole 204 is communicated with the threaded hole 101.

The method is used for processing and manufacturing the drill bit adopting friction pressure welding, and specifically comprises the following steps:

the cutting part is machined and formed, in the embodiment, the blanking is firstly carried out, the pouring and forming are completed through sand mold molding, and finally, the grinding and finishing are carried out, so that the machining of the cutting part is completed;

blanking the connecting handle, namely blanking the connecting handle by cutting a seamless steel pipe with proper length, turning a threaded hole and two end faces, machining the threaded hole, and finishing the end face of the connecting handle;

butting the cutting part and the connecting handle, and completing connection and fixation through friction pressure welding;

the heat treatment of the cutting portion specifically includes quenching the edge portion of the cutting portion.

And finally, inspecting the welded cutting part and the connecting handle, and spraying paint, spraying code identification and packaging after the inspection is qualified.

In the above structure, a further description is made of specific component structures and actions:

① the present application carries out the drilling process by welding, which is divided into two parts of connecting handle and drilling part.

② the connection handle and the drilling part are butted through the connection surface and welded into a whole drill by friction pressure, and the butt joint surface is completely welded, which is convenient for ensuring the connection strength and the control of the whole machining precision.

③ the connecting handle is turned by seamless steel tube material, and for the specific processing method, other mechanical processing means such as milling can be adopted to ensure the processing precision of the thread, and the automatic equipment processing can be adopted to improve the efficiency and reduce the cost, the processing precision is high, the efficiency can be ensured, and the batch operation is convenient.

④ the whole production process of the drill bit can reduce the cost by mass production of automation equipment, is convenient to popularize and apply, can simplify the processing process, reduce the production cost, improve the production efficiency and effectively control the processing quality by adopting the structure and the process.

According to the friction pressure welding method, the oxides or impurities attached to the surface can be cleaned in the initial welding stage, the influence of the oxides or the impurities on the quality of the whole drill bit structure is avoided, meanwhile, the contact surface can be heated more uniformly, and the welding quality and the flatness of the welding surface are guaranteed; in the welding process, the two parts can generate large plastic deformation, metal atoms on the contact surfaces are closer, mutual diffusion and intercrystalline connection are generated, common recrystallization, intermediate compounds and a small amount of recrystallized grains are formed, and therefore the two weldments are welded together.

The welding process is more convenient to realize automation, high in welding size precision and geometric precision, small in welding allowance, capable of guaranteeing welding quality and capable of guaranteeing the qualified rate of drill bits in batch production operation.

While the above description has described in detail the preferred embodiments for carrying out the invention, it should be understood that these embodiments are presented by way of example only, and are not intended to limit the scope, applicability, or configuration of the invention in any way. The scope of the invention is defined by the appended claims and equivalents thereof. Many modifications may be made to the foregoing embodiments by those skilled in the art in light of the teachings of the present disclosure, and such modifications are intended to be within the scope of the present disclosure.

Claims

1. A drill bit for friction pressure welding, comprising:

a cutting portion; and

2. The drill bit using friction pressure welding as claimed in claim 1, wherein the connecting shank is a steel pipe, and the threaded hole is formed by turning.

3. The drill bit using friction pressure welding as recited in claim 1, wherein said cutting portion comprises:

a substrate;

a first cutting head provided at an end of the base; and

4. A drill bit for friction pressure welding as defined in claim 3 wherein said first cutting head is a cross bit or a button bit.

5. The drill bit for friction pressure welding according to claim 1, wherein the cutting portion is provided with a water hole and a chip groove, the water hole communicating with the threaded hole.