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AssigneeToshiba Kikai Kabushiki Kaisha
InventorsMinoru Hamamura, Sadaji Hayama, Jun Fujita, Kazuhiro Shiba
Estimating the term…
A machining program is read in and interpreted and a determination is made as to whether the amount of movement called for by a block of commands is larger or smaller than a minimum amount of movement that is established by a feed speed and a one sampling period of a numerical control apparatus. If the amount of movement called for is greater than the minimum amount of movement, feed control is performed in accordance with the current block. If the amount of movement called for by the current block of commands is smaller than the minimum movement amount, an immediate subsequent block of commands is concatenated with the current block, and this concatenation of command blocks is continued until a synthesized block calling for an amount of movement greater than the minimum amount of movement is obtained, this synthesized block then being used to perform feed control.
A feed control processing method for a numerical control apparatus, comprising:
A numerical control apparatus that determines if an amount of movement called for by a current block of commands in a machining program is greater than or less than a minimum amount of movement established by a feed speed and a one sampling period thereof, and performs feed control according to the current block of commands if the amount of movement called for is greater than the minimum amount of movement, but concatenates the current block with an immediately subsequent block to form a synthesized block of commands if the amount of movement called for by the current block is smaller than the minimum movement amount, repeating the concatenation of blocks until a synthesized block calling for an amount of movement greater than the minimum movement amount is obtained, and performs feed control according to the thereby obtained synthesized block.
A numerical control apparatus comprising:
Dependencies are inferred from the claim text.