Deep hole processing method and device thereof

A processing method and technology of processing device, applied in metal processing equipment, manufacturing tools, boring/drilling and other directions, can solve the problems of broken drill bit, workpiece damage, insufficient adjustment angle of adjustable tilt platform, etc. The effect of insufficient drill pipe length

Inactive Publication Date: 2012-06-27
DONGFANG (GUANGZHOU) HEAVY MASCH CO LTD
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  • Application Information

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Problems solved by technology

[0003] There are three major disadvantages when using a large CNC boring and milling machine with a tiltable rotary table to drill such deep holes: First, when there are many drilling positions required, the adjustment angle of the adjustable tilting platform is not enough, and it can only Satisfy the drilling angle at one point; secondly, the numerical control equipment drills holes through instructions, and when it encounters situations such as poor chip removal and deviation of the drill bit, it cannot be adjusted in time, which may easily lead to the breakage of the drill bit and damage to the workpiece; The drilling stroke of the drilling equipment is difficult to meet the requirements of this type of drilling

Method used

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  • Deep hole processing method and device thereof
  • Deep hole processing method and device thereof

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Embodiment Construction

[0019] refer to figure 1 , the present invention is a kind of deep hole processing method, comprises the following steps:

[0020] 1) Carry out pre-drilling at the required drilling position;

[0021] 2), exit the drill bit 1 used for drilling, lengthen the drill rod 2 of the drill bit 1, and withdraw the drill bit 1 after the processed deep hole reaches the depth that the lengthened drill rod 2 can process;

[0022] 3) Repeat step 2) to complete the required depth of drilling.

[0023] This method of deep hole drilling realizes the processing of deep holes by gradually increasing the drill rod 2 of the drill bit 1 used for drilling, effectively solving the problem of insufficient length of the drill rod 2 in the process of deep hole drilling, and at the same time performing the drilling step by step The hole helps to reduce the damage to the workpiece caused by problems such as poor chip removal and drill bit deviation during the drilling process, and helps to improve the q...

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Abstract

The invention discloses a deep hole processing method and a device for thereof. The device comprises a drill bit and a collet for clamping the drill bit, wherein a taper shank which can be used for arranging the collet on a drilling machine is arranged on one side of the collet coaxial with the drill bit and the collet; and a plurality of lengthening bars are arranged between the collet and the taper shank. In a deep hole drilling method, deep hole processing is realized by gradually increasing drill rods of the drill bit for drilling, so that the problem of insufficient length of a drill rod in a deep hole drilling process is solved effectively; meanwhile, gradual drilling is performed, so that damage to a workpiece caused by the problems of unsmooth chip removal, drill bit deviation and the like in a drilling process is reduced, and deep hole drilling quality is enhanced; and the method and the device are applied in the field of deep hole drilling.

Description

technical field [0001] The invention relates to hole processing, in particular to a deep hole processing method and a device used in the method. Background technique [0002] The hole diameter of the sewage pipe hole on the head of the water chamber of the steam generator is 19.4mm, and the longest hole depth is about 610mm. The hole diameter ratio of this kind of hole is relatively large, and the angle and position of the hole are special. There is a certain angle between the entry surface and the inner wall of the nozzle, and the drilling surface is the inner spherical surface of the head, and the longest distance from the edge of the head is about 1500mm. The previous drilling scheme for this type of hole is to clamp the head on an adjustable tilt platform and use a large CNC boring and milling machine for drilling. [0003] There are three major disadvantages when using a large CNC boring and milling machine with a tiltable rotary table to drill such deep holes: First, ...

Claims

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Application Information

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IPC IPC(8): B23B35/00B23B41/02
Inventor 刘远彬江国焱朱应斌王卫东
Owner DONGFANG (GUANGZHOU) HEAVY MASCH CO LTD
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