CN2785767Y

CN2785767Y - Deep hole drilling tool

Info

Publication number: CN2785767Y
Application number: CN 200520032973
Authority: CN
Inventors: 刘力
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-27
Filing date: 2005-01-27
Publication date: 2006-06-07
Anticipated expiration: 2015-01-27

Abstract

The utility model provides a deep hole drilling tool. The deep hole drilling tool comprises a cooling tank, a water inlet pipe, a water return pipe, a water inlet pipe joint and a hollow knife bar, wherein a head of the hollow knife bar is connected with a head of a twist drill bit. The deep hole drilling tool has the advantages of simple manufacture and low manufacturing cost; processing automation can be realized, a metal hole of which the length-diameter ratio is larger than 30/1 is drilled and processed, and the processing precision of parts and lower roughness of processing surfaces are ensured.

Description

The gun drilling instrument

Technical field:

The utility model relates to a kind of drilling tool, particularly a kind of gun drilling instrument.

Background technology:

Gun drilling is a great problem of metal processing industry always, limited with the common drilling tool drilling degree of depth, particularly draw ratio hardly may greater than 30: 1 metal aperture drilling, but in chemical industry, metallurgy, some industries of national defence, need really some parts are carried out gun drilling, some hole not only degree of depth is big, and the linearity requirement arranged, part material from the ordinary carbon steel to the stainless steel, the alloy steel capital has, tool wear is exceedingly fast, processing cost is very high.

The utility model content:

The purpose of this utility model be for provide a kind of can be on engine lathe, automatically, quickly and efficiently to the device of metal parts processing draw ratio greater than 30: 1 hole.

The purpose of this utility model is achieved like this:

The gun drilling instrument comprises cooler bin, water inlet pipe, and return pipe, admitting pipe joint, hollow knife bar, the head of hollow knife bar is connected with the head of a spiral bit.

Above-mentioned gun drilling instrument, the head of its spiral bit and hollow knife bar connect for being weldingly connected.

Above-mentioned gun drilling instrument is equipped with sealing ring between its admitting pipe joint and workpiece, the knife bar.

The utility model is work like this: an end of workpiece is clamped in the lathe dog, the other end is supported on the lathe centre frame, workpiece rotates with lathe spindle, the chip pocket of drill bit communicates with hollow knife bar inside, hollow knife bar afterbody links to each other with return pipe, hollow knife bar passes admitting pipe joint and stretches in the workpiece, the auto-feed under lathe saddle drives of hollow knife bar, the cooling fluid that water inlet pipe is carried enters admitting pipe joint, arrive drill bit head by the gap between hollow knife bar and the workpiece hole, the metal fragment that drill bit downcuts is with the chip pocket of cooling fluid by drill bit, the hollow interior of hollow knife bar is back in the cooler bin, and the continuous operation that so circulates just can process the high deep hole of required precision.Reface behind the bit wear blade or heavy tool changing head, price is extremely low, and processing cost is also very low, and processing realizes full-automatic.

Gun drilling tool making of the present utility model is simple, cost of manufacture is low, can realize that draw ratio is greater than 30: 1 metal aperture drilling processing, can process various types of materials such as ordinary carbon steel, stainless steel, steel alloy, guarantee part processing precision and finished surface than low roughness.

Description of drawings:

Fig. 1 is the utility model gun drilling tool construction schematic diagram.

Fig. 2 is for being the utility model gun drilling tool work schematic diagram.

The specific embodiment:

Embodiment 1:

Fig. 1--Fig. 2 has provided present embodiment 1 figure.Referring to Fig. 1--Fig. 2, the utility model gun drilling instrument comprises cooler bin 3, water inlet pipe 4, return pipe 5, admitting pipe joint 6, hollow knife bar 1, the head of hollow knife bar 1 are connected with the head 2 of a spiral bit, the head 2 and the hollow knife bar 1 of spiral bit connect for being weldingly connected, and

sealing ring

8,9 is installed between admitting pipe joint 6 and workpiece 7, the hollow knife bar 1.

On lathe 14, add man-hour, one end of workpiece 7 is clamped in the lathe dog 10, the other end is supported on the lathe centre frame 11, workpiece 7 rotates with lathe spindle, the chip pocket 13 of drill bit communicates with hollow knife bar 1 inside, hollow knife bar 1 afterbody links to each other with return pipe 5, hollow knife bar 1 passes admitting pipe joint 6 and stretches in the workpiece 7, the auto-feed under lathe saddle 12 drives of hollow knife bar 1, the cooling fluid that water inlet pipe 4 is carried enters admitting pipe joint 6, arrive drill bit head 2 by the gap between hollow knife bar 1 and workpiece 7 holes, the metal fragment that drill bit downcuts is with the chip pocket 13 of cooling fluid by drill bit, the hollow interior of hollow knife bar 1 is back in the cooler bin 3, and the continuous operation that so circulates just can process the high deep hole of required precision.

Claims

1. the gun drilling instrument comprises cooler bin, water inlet pipe, and return pipe, admitting pipe joint, hollow knife bar is characterized in that the head of described hollow knife bar is connected with the head of a spiral bit.

2. gun drilling instrument according to claim 1 is characterized in that the head of spiral bit and hollow knife bar connect for being weldingly connected.

3. gun drilling instrument according to claim 1 is characterized in that between admitting pipe joint and workpiece, the knife bar sealing ring being installed.