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Machining method for profile countersink drill

A processing method and a countersinking technology, which are applied in the processing field of countersinking, can solve the problems of not being able to well guarantee the surface accuracy requirements of the countersinking, difficult to measure and detect, etc., and achieve high precision, ensure the surface accuracy requirements, and ensure processing. The effect of precision

Active Publication Date: 2012-12-19
SHENYANG AIRCRAFT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The size value is d=φ7.6 , and it is a theoretical value, not a physical size, and it is not easy to measure and detect, so it cannot guarantee the surface accuracy requirements of the countersink drill.

Method used

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  • Machining method for profile countersink drill
  • Machining method for profile countersink drill
  • Machining method for profile countersink drill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] like Figure 5 As shown, now take d=Φ6.2R0.7 profile countersink as an example to illustrate the processing method of profile countersink, which includes the following steps:

[0026] 1) Align the blank of the cutter body including the blade and the tail handle, drill and ream the 1:50 taper hole to the size, and use the 1:50 taper hole as the reference for the center hole of the tail;

[0027] 2) Car shape: the top car is formed, the outer circle of the blade is ground 0.4mm, the outer circle of the tail shank is ground 0.4mm, and the profile adopts a sample with a uniform reserve of 0.2mm, which can ensure the uniform reserve of the profile, that is, proofread with the sample For the countersinking surface, leave 0.2mm evenly between the template and the countersinking surface;

[0028] 3) Milling tooth shape: Mill the tooth shape of the angled surface according to the requirements of the drawing, leaving the amount of relief grinding K=2.1;

[0029] 4) Coarse shove...

Embodiment 2

[0037] like Figure 5 As shown, now take d=Φ6.2R0.7 profile countersink as an example to illustrate the processing method of profile countersink, which includes the following steps:

[0038] 1) Align the blank of the cutter body including the blade and the tail handle, drill and ream the 1:50 taper hole to the size, and use the 1:50 taper hole as the reference for the center hole of the tail;

[0039] 2) Car shape: the top car is formed, the outer circle of the blade is ground 0.5mm, the outer circle of the tail shank is ground 0.5mm, and the profile adopts a sample with a uniform reserve of 0.3mm, which can ensure the uniform reserve of the profile, that is, proofread with the sample For the countersinking surface, leave 0.3mm evenly between the sample plate and the countersinking surface;

[0040] 3) Milling tooth shape: Mill the tooth shape of the angled surface according to the requirements of the drawing, leaving the amount of relief grinding K=2.1;

[0041] 4) Coarse s...

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Abstract

The invention provides a machining method for a profile countersink drill. The machining method includes the following steps: a cutter body blank with an edge part and a tail shank is fixed correctly, a 1:50 tapered bore is drilled and reamed to a dimension, and with the 1:50 tapered bore as a reference, a tail central bore is made; the top is turned to be shaped, the remainder of grinding of the outer circle of the edge part is 0.4mm to 0.5mm, the remainder of grinding of the outer circle of the tail shank is 0.4mm to 0.5mm, and 0.2mm to 0.3mm of profile uniformly remains by adopting a template; according to the requirement of a drawing, an angled surface tooth profile is milled, and the remainder of relief grinding K is equal to 2.1; a profile grinding wheel is used for roughly profile-grinding a profile and a clearance angle, and the remainder of grinding is 0.4mm to 0.5mm; the profile grinding wheel is used for roughly profile-grinding the profile and the clearance angle to required dimensions, and 0.5mm of margin remains to guarantee equal division; a front edge is ground; the machined cutter body part is mounted on a guide shaft, and thereby the whole machining process is finished. The machining method guarantees the machining precision of the profile grinding wheel, so that the profile countersink drill has higher precision and can better meet requirements.

Description

technical field [0001] The invention relates to a processing method of a countersink, in particular to a processing method of a profiled countersink for processing the forming surface of a hole. Background technique [0002] The types and uses of countersinking can be divided into the following categories: Cylindrical countersinking (reaming drill), which is used to expand the cylindrical aperture of the existing drilling, casting and forging holes on the workpiece. Countersunk drill for machining cylindrical countersunk holes on workpieces. Cone countersink, used to machine the inner conical surface of a hole in a workpiece. End face countersinking is used to process the end face of the hole on the workpiece. Square hole countersink for processing square and hexagonal holes. Countersinks are used to machine the profiled surface of a hole. Skin countersinking, used for countersinking thin plates. [0003] From the structural point of view, countersinking can be divided ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/28
Inventor 邓楠徐强
Owner SHENYANG AIRCRAFT CORP
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