Thread cutting method using lathe and numerical controller
First Claim
1. A thread cutting method using a lathe which performs thread cutting by revolving a work mounted on a spindle of the lathe, then cutting the work by putting a tool into contact with the work from a direction orthogonal to the spindle, and moving the tool relatively to the work in a work axial direction in synchronization with the revolution of the spindle, comprising:
- specifying various data used to perform thread cutting;
storing a machining program having a threading cycle which regulates a basic spiral operation of the tool, according to the specified various data; and
controlling the tool to perform a thread cutting operation by executing said machining program to control the basic spiral operation of the tool operation while controlling a depth of cut for said thread cutting operation by moving the tool manually.
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Abstract
A basic spiral operation of a tool is controlled by storing, in a controller, an automatic operation program of a threading cycle which regulates the basic spiral operation of the tool corresponding to a thread shape by specifying a spindle revolving speed RC, a thread lead ZR and a thread cutting finish point Z2 or the like. A depth of cut by the tool is determined by an operator who operates a handle of a manual pulse generator to cut the work and confirms the cutting conditions.
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Citations
7 Claims
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1. A thread cutting method using a lathe which performs thread cutting by revolving a work mounted on a spindle of the lathe, then cutting the work by putting a tool into contact with the work from a direction orthogonal to the spindle, and moving the tool relatively to the work in a work axial direction in synchronization with the revolution of the spindle, comprising:
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specifying various data used to perform thread cutting; storing a machining program having a threading cycle which regulates a basic spiral operation of the tool, according to the specified various data; and controlling the tool to perform a thread cutting operation by executing said machining program to control the basic spiral operation of the tool operation while controlling a depth of cut for said thread cutting operation by moving the tool manually. - View Dependent Claims (2, 3)
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4. A numerical controller for controlling a lathe to perform thread cutting, comprising:
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a machining program storage means for storing an automatic operation program of a thread cutting cycle; an input unit having a display screen to input and display various data required for execution of said automatic operation program; a data storage means for storing the data inputted from said input unit having a display screen; a manual pulse handle for moving a thread cutting tool by a manual operation in a cutting direction relatively to a work mounted on a spindle; and a machining program creating means for creating a semiautomatic operation program for performing predetermined thread cutting to the work by applying data stored in said data storage means, except data representing a depth of cut for one machining cycle, and data representing a depth of cut corresponding to a manipulated variable of said manual pulse handle to the automatic operation program stored in said machining program storage means. - View Dependent Claims (5, 6, 7)
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Specification