CN2309196Y

CN2309196Y - Carpenter's drill

Info

Publication number: CN2309196Y
Application number: CN 97235402
Authority: CN
Inventors: 陆坚
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-08-29
Filing date: 1997-08-29
Publication date: 1999-03-03
Anticipated expiration: 2007-08-29

Abstract

The utility model provides a drill bit for a carpenter, and the utility model relates to the field of instruments for processing timber. The utility model comprises a cutting head and an extension rod. The utility model is characterized in that the cutting head and the extension rod are connected in a dismountable way, a lengthened rod is arranged on the extension rod, and one end of the lengthened rod is connected with the cutting head in the dismountable way. The cutting head of the utility model is connected with the extension rod in the dismountable way, and the abrasion or the damage of the cutting head or the abrasion or the damage of the extension rod can not cause an entire drill bit to be worthless; at the same time, according to the difference of the depth of holes to drill, lengthened rods of different length are arranged on the extension rod so as to flexibly use the utility model.

Description

Solid center bit

The utility model relates to timber operated implement field, particularly a kind of solid center bit.

Therefore in the prior art, the cutting head of solid center bit is fixedlyed connected with extension bar, and in cutting head and extension bar either party wearing and tearing taken place or damaged, and just makes whole drill bit scrap, and causes unnecessary loss.

The purpose of this utility model just provides a kind of simple in structure, dismountable type solid center bit.

For achieving the above object, the utility model by the following technical solutions: it comprises cutting head and extension bar, it is characterized in that described cutting head and extension bar are that detached type is connected.

Also be provided with extension bar on the extension bar of the present utility model, an end of extension bar is that detached type is connected with cutting head.

Owing to adopted technique scheme, cutting head of the present utility model is that detached type is connected with extension bar, in cutting head and the extension bar either party wearing and tearing or decrease ring and can not cause scrapping of whole drill bit, simultaneously, can be according to the degree of depth difference in the hole of required brill, the extension bar of different length is set, so that flexible Application on extension bar.

The utility model will be further described below in conjunction with drawings and Examples.

Fig. 1 is a schematic diagram of the present utility model.

With reference to accompanying drawing.The utility model comprises cutting head 1 and extension bar 2, and cutting head 1 has is with externally threaded connecting rod 3, and extension bar 2 is provided with extension bar 4, and an end of extension bar 4 is provided with and connecting rod 3 corresponding inner bolt holes.

When practical application, can be the extension bar 2 that 1 configuration of a cutting head has different length extension bar 4, to satisfy actual needs according to the degree of depth difference in the hole of required brill.

Except being threaded, the detached type connected modes such as can also adopting bayonet type that is connected of cutting head 1 and extension bar 4 or extension bar 2.

Claims

1, a kind of solid center bit comprises cutting head and extension bar, it is characterized in that described cutting head and extension bar are that detached type is connected.

2, solid center bit as claimed in claim 1 is characterized in that also being provided with on the described extension bar extension bar, and an end of extension bar is that detached type is connected with cutting head.