CN201380308Y

CN201380308Y - Special drilling tool for extension rod

Info

Publication number: CN201380308Y
Application number: CN200920089282U
Authority: CN
Inventors: 陈宝泽; 刘人旗; 王兴龙
Original assignee: ZHENGZHOU COAL MACHINERY INTEGRATED EQUIPMENT CO Ltd
Current assignee: ZHENGZHOU COAL MACHINERY INTEGRATED EQUIPMENT CO Ltd
Priority date: 2009-03-31
Filing date: 2009-03-31
Publication date: 2010-01-13
Anticipated expiration: 2019-03-31

Abstract

The utility model discloses a special drilling tool for an extension rod, comprising a bottom plate and a plurality of reverse L-shaped drill stands horizontally ranged on the bottom plate, wherein, a horizontal plate of the upper parts of the drill stands is provided with a locating through hole; both ends of the bottom plate are respectively provided with a V-shaped mat, and the middle part of the bottom plate is provided with a locating block. An extension rod to be processed is horizontally placed between the two V-shaped mats, and the locating block is accurately snapped in a circular groove arranged on the extension rod, so the clamping of a workpiece to be processed is completed. The drilling tool is started, and a drill bit is penetrated from the locating through hole arranged on the horizontal plate and then directly drills on the workpiece, so the production efficiency can be increased by 50%, and the qualification rate of products can also be increased from 90% to 99%.

Description

The extension bar specific drilling tool

Technical field

The utility model relates to boring anchor clamps, especially relates to the extension bar specific drilling tool on the hydraulic support.

Background technology

In machining industry, the processing that needs to hole on the cylindrical of a lot of cylinders and steel pipe series products because artificial line is difficult to guarantee the position of centerline hole, is processed metapore and the center often occurred departing from, cause the position in hole overproof, also can occur problems such as cutter tipping sometimes.In the hydraulic support production and processing, because the extension bar of various models is a lot, conventional processing method not only makes product quality can not get guaranteeing that production efficiency is low and production cost is high.

The utility model content

The purpose of this utility model is to provide the extension bar specific drilling tool of a kind of convenient mounting and clamping, accurate positioning.

For achieving the above object, the utility model can be taked following technical proposals:

Extension bar specific drilling tool described in the utility model, described drilling tool comprise base plate and horizontally a plurality of on described base plate fall L shaped drilling bracket, on the transverse slat on described drilling bracket top, offer positioning through hole; Be respectively arranged with the V-arrangement pad at the two ends of described base plate, its middle part is provided with locating piece.

It is described that to fall L shaped drilling bracket be three.

The center line that is opened in circle center line connecting, V-arrangement pad and the locating piece of a plurality of positioning through hole on the described transverse slat coincides.

The utility model advantage be according to the distance between borehole on the extension bar to be processed with its assembling after, adjust the same dimension of V-arrangement pad and locating piece center line, and and each transverse slat on the same dimension of line between the positioning through hole center of circle offered, the extension bar of needs processing is lain in a horizontal plane between the two V-arrangement pads, locating piece accurately snaps in the annular groove of offering on the extension bar, finishes the clamping of workpiece to be processed; Start rig, drill bit is directly holed on workpiece after passing in the positioning through hole of offering on the transverse slat, has saved crossed process, and boring conveniently saves trouble, and not only enhances productivity 50%, and product percent of pass also can bring up to 99% from 90%.Though the length of various extension bars and diameter have certain difference, only need during use the drilling bracket spacing of specific drilling tool and the position of locating piece are adjusted, rely on the cylindrical and the annular groove of extension bar directly to locate, can guarantee that the size positions after the product boring is controlled in the margin of tolerance.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the left view of Fig. 1.

The specific embodiment

As shown in the figure, extension bar specific drilling tool described in the utility model, described drilling tool comprise base plate 1 and horizontally three on described base plate 1 fall L shaped drilling bracket 2, on the transverse slat 3 on described drilling bracket 2 tops, offer positioning through hole 4; Be respectively arranged with V-arrangement pad 5 at the two ends of described base plate 1, its middle part is provided with locating piece 6; The center line that is opened in line, V-arrangement pad 5 and the locating piece 6 in 4 centers of circle of positioning through hole on the described transverse slat 3 coincides.

Claims

1, a kind of extension bar specific drilling tool is characterized in that: described drilling tool comprises base plate (1) and horizontal a plurality of L shaped drilling brackets (2) that fall on described base plate (1), offers positioning through hole (4) on the transverse slat (3) on described drilling bracket (2) top; Be respectively arranged with V-arrangement pad (5) at the two ends of described base plate (1), its middle part is provided with locating piece (6).

2, extension bar specific drilling tool according to claim 1 is characterized in that: the described L shaped drilling bracket (2) that falls is three.

3, extension bar specific drilling tool according to claim 1 and 2 is characterized in that: the center line that is opened in line, V-arrangement pad (5) and the locating piece (6) in the center of circle between the positioning through hole (4) on the described transverse slat (3) coincides.