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Design method for milling cutter for processing superlarge specification inner screw thread

A technology with super-large specifications and design methods, applied in metal processing equipment, thread cutting tools, calculations, etc., can solve the problem of destroying the thread profile angle and so on

Inactive Publication Date: 2007-10-24
YICHANG MARINE DIESEL ENGINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the pitch-to-diameter ratio is large to a certain extent, because the thread lead angle becomes larger, and then this technology is used to process internal threads, the tool will overcut the tooth surface during milling and destroy the thread profile angle, so that this technology cannot continue use

Method used

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  • Design method for milling cutter for processing superlarge specification inner screw thread
  • Design method for milling cutter for processing superlarge specification inner screw thread
  • Design method for milling cutter for processing superlarge specification inner screw thread

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] (1) Use 3D CAD modeling software to make solid modeling of tile-type nut columns.

[0030] (2) Determine the center of the cutter head and determine the diameter of the cutter head:

[0031] Center position of cutter head = radius of main shaft + clearance between main shaft and small diameter = 174mm

[0032] Effective cutter head diameter = main shaft diameter + double tooth height + double bottom diameter overcut + double main shaft and top diameter clearance = 580 mm

[0033] (1) Line A is determined by the center of the cutter head, the diameter of the cutter head, and the major diameter of the thread.

[0034] (2) Take line A as the spline and the center line of the cutter head as the ridge line to make a plane.

[0035] (3) The thread entity cuts plane B, and takes plane B as the sketch plane to make the tool section as shown in the figure below.

[0036] (3) Make the tool entity: the tool section line rotates according to the tool center line to generate the ...

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PUM

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Abstract

The invention discloses a milling cutter design method for ultra large internal screw, belonging to mechanical processing technical field. The invention based on any one CAM solid software solid shapes a nut post, finds the center of a cutter disc, finds the diameter of the cutter disc, finds the section profile of the cutter, and produces cutter solid, to avoid over-cut object tooth surface of the screw, caused by lasted general operation of screw milling cutter along tooth angle when the ratio between the pitch and the middle diameter reaches one value, to design a milling cutter which can process ultra-large internal screw.

Description

technical field [0001] The invention relates to a design method of a milling cutter for designing and processing super-sized internal threads by using three-dimensional modeling software, and belongs to the field of mechanical processing. Background technique [0002] Super-large nut strips refer to nut strips with a diameter greater than 600MM, a pitch greater than 100MM, and a ratio of pitch to diameter greater than 100 / 600. Conventional production, when processing internal threads, will cause the tooth surface of the processed thread to be overcut. It is a mature technology to use the thread milling cutter whose tool profile is completely consistent with the tooth profile angle of the internal thread, and use the CNC three-coordinate linkage technology to process the internal thread with a small pitch-to-diameter ratio. When the pitch-to-diameter ratio is large to a certain extent, because the thread lead angle becomes larger, and then this technology is used to process ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50B23G5/18
Inventor 陈永华毕超
Owner YICHANG MARINE DIESEL ENGINE