A method of machining drum rope grooves using numerical control machine tools

A drum rope groove, using numerical control technology, applied in the direction of metal processing equipment, cutting machine, manufacturing tools, etc., can solve the problems of increased manufacturing cost, high risk, high scrap rate, etc., to improve processing efficiency, reduce labor intensity, The effect of improving machining accuracy

Inactive Publication Date: 2014-10-15
NANJING HIGH SPEED TRANSMISSION SK NUMERICAL CONTROL EQUIP
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Turning a complete thread requires as many as 150 to 200 times of cutting tools. The disadvantages are low efficiency, high risk, poor precision, and high scrap rate, which increases manufacturing costs.

Method used

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  • A method of machining drum rope grooves using numerical control machine tools
  • A method of machining drum rope grooves using numerical control machine tools
  • A method of machining drum rope grooves using numerical control machine tools

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Embodiment Construction

[0027] The invention discloses a method for processing a drum rope groove by using a numerical control machine tool, which comprises the following steps:

[0028] Step 1, set the direction perpendicular to the horizontal surface of the workpiece section as the X direction, and the direction parallel to the horizontal surface of the workpiece section as the Z direction;

[0029] Step 2, after clamping the workpiece blank, first rough turn the outer wall with an outer turning tool; ensure that the tolerance of the outer diameter of the reel within the full length range is within 0.5 mm.

[0030] Step 3, changing the circular turning tool, the present invention will according to the blueprint rope groove pitch, groove depth, large circle radius, chamfer radius, start offset angle, lead-in section length and other shape parameters and rough and finish machining speed, X Fill in the processing parameters such as the depth of each layer in the direction, the depth of each layer in t...

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Abstract

The invention discloses a method for processing a winding drum rope groove by using a numerical control machine tool. The method comprises the following steps of: setting a direction which is vertical to the horizontal surface of the cross section of a work piece as an x direction, setting a direction which is parallel to the horizontal surface of the cross section of the work piece as a z direction and setting a standard value for a main shaft; clamping a work piece blank and roughly turning the outer wall of the blank once by using an external turning tool; cutting a layer along the x direction by using a circular bit till the edge of the rope groove and leaving the margin of between 0.2 and 2 millimeters; feeding in the z direction till the bottom diameter position of the rope groove is cut and leaving the margin of between 0.2 and 2 millimeters; and starting finish machining from a fixed point on one side of a circular arc of the rope groove, and adding or subtracting the offset of each cutter during finish machining to or from a current coordinate Z according to a processing direction once the processing of a cutter is completed to obtain the coordinate Z of the processing start point of a next cutter till the top point of the rope groove on the other side is processed so as to obtain the winding drum rope groove. The method has the advantages of high processing efficiency, high accuracy and greatly-improved yield.

Description

technical field [0001] The invention relates to a method for processing and manufacturing a drum rope groove, in particular to a method for processing a drum rope groove by using a numerical control machine tool. Background technique [0002] A key process in the production process of port container cranes is the processing of large drum rope grooves. For example, the port container cranes of Shanghai Zhenhua Port Machinery currently account for 70% of the global market share. In 2005, the sales revenue was 2.3 billion US dollars, but the supply is still in short supply. At present, Zhenhua Port Machinery has nearly 20 large-scale ordinary lathes that are processing almost 24 hours a day, 365 days a year, and their output still cannot meet the demand. As many as 30-40% of the rope groove processing tasks need outsourcing. like figure 1 As shown, the reel rope groove is essentially a special-shaped thread. The cross-sectional shape of this thread is composed of three arcs t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23G1/02
Inventor 杜玉湘章雨林
Owner NANJING HIGH SPEED TRANSMISSION SK NUMERICAL CONTROL EQUIP
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