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Inner-cooling indexable step drill and method for fabricating step hole

A technology of stepped drilling and stepped hole, which is applied in the direction of manufacturing tools, drilling/drilling equipment, and components of boring machines/drilling machines, etc., can solve the problems of poor cooling, poor lubrication effect and less cutting fluid, and save frequent tool changes. Time, cutting speed, and management reduction effect

Inactive Publication Date: 2009-09-09
刘新平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the gap between the drill bit and the material is extremely small and cannot be pressurized, very little cutting fluid enters, and the cooling and lubrication effects are not good.

Method used

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  • Inner-cooling indexable step drill and method for fabricating step hole
  • Inner-cooling indexable step drill and method for fabricating step hole
  • Inner-cooling indexable step drill and method for fabricating step hole

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Embodiment Construction

[0023] The specific embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings. The above and other objects, features and advantages of the present invention will be apparent to those skilled in the art from the detailed description of the present invention.

[0024] The internal cooling indexing stepped drill proposed by the present invention, its preferred embodiment structure is as follows figure 1 and image 3 As shown, it includes a fixing part and a drill body 1 . Such as figure 1 As shown, the drill body 1 is cylindrical with steps, the outer profile of the axial section of the drill body 1 is stepped, and the outer diameter of the end of the drill body near the fixed part is larger than the outer diameter of the end far away from the fixed part ; The top of the drill body 1 is respectively provided with an end face inner cutter block 9 for processing the central part of the hole and an end face outer c...

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Abstract

The invention provides an inner-cooling indexable step drill and a method for fabricating a step hole thereof. The inner-cooling indexable step drill comprises a fixed part and a drill bit body. The drill bit body is in columnar shape with steps. The outline of the axial section of the drill bit body is in step shape, and the outer diameter of one end of the drill bit body near the fixed part is larger than the outer diameter of the end far from the fixed part. The top of the drill bit body is respectively provided with an end inner knife block used for processing the central part of a hole and an end outer knife block used for processing the outer part of the hole. A step-shaped jut of the drill bit body is provided with an indexable blade. The surface of the drill bit body is provided with two spiral slots for containing drilling chips and cutting liquid. A material part of the drill bit body is provided with two spiral holes used for filling the cutting liquid with certain pressure. The invention also provides a method for fabricating the step-shaped hole by an indexable inner-cooling step drill. The invention is applied to fabricate the step-shaped hole and can fabricate the step hole by cutting feed at a time.

Description

technical field [0001] The invention relates to an internal cooling indexing stepped drill and a method for manufacturing a stepped hole. Background technique [0002] When existing drills make stepped holes on materials, they usually use multiple drills with different diameters to process them separately. First, a drill with the smallest diameter is used to process a hole, and then drills with different diameters are gradually processed on the hole wall. stepped hole. Like this just needs to carry out drilling processing many times, very troublesome. At the same time, in order to prevent the high heat generated from damaging the drill bit during processing, it is usually necessary to continuously spray coolant on the drill bit during processing. However, since the gap between the drill bit and the material is extremely small, and it cannot be pressurized, very little cutting fluid enters, and the cooling and lubrication effects are not good. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/10B23B51/06B23B35/00
Inventor 刘新平韩占平
Owner 刘新平
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