EP0024947A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Feed speed control system
Assignee: Fanuc Corp
•
Filing: 1980-09-03
•
Granted: —
•
Expires: 2000-09-03
Abstract
Abstract The control system includes memory circuitry (104, 105, 106, 107) for storing a plurality of numerical values (Nf1 to Nf9) corresponding to feed speeds (F 1 to F 9 ), command circuitry (101, 102, 103) for issuing a command indicative of a prescribed numerical value e.g. Nf1 (by designating a feed speed) from among the numerical values (Nf1 to Nf9), arithmetic circuitry (108, 109) for incrementing or decrementing a numerical value (Nf1) read from the memory circuitry in response to an output pulse (UPP or DWP) from a manually operated device, and pulse generating circuitry (110) for generating pulses (OVFP) of a frequency (F o which is proportional to the numerical value (Nf1) from the arithmetic circuitry as incremented or decremented by the arithmetic circuitry.
Inventors
- 👤 Hiroomi Fukuyama
- 👤 Shinichi Isobe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 10:18
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/416; G05B2219/00; G05B2219/30; G05B2219/36; G05B2219/36078; G05B2219/43; G05B2219/43158
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
118 words
A feed speed control system for controlling the feed speed of a movable member, which comprises: information for designating memory means for storingLa plurality of numerical values corresponding to feed speeds; command means, connected to said memory means, for issuing a command indicative of a prescribed numerical value from among the plurality of numerical values stored in said memory means; arithmetic means, connected to said memory means, for incrementing or decrementing a numerical value read from said memory means in response to an output pulse from manual operation means; and pulse generating means, connected to said arithmetic means, for generating pulses of a frequency which is proportional to an incremented or decremented numerical value from said arithmetic means.
Claim 2
Dependent Claim
118 words
A feed speed control system for controlling the feed speed of a movable member, which comprises: information for designating memory means for storingLa plurality of numerical values corresponding to feed speeds; command means, connected to said memory means, for issuing a command indicative of a prescribed numerical value from among the plurality of numerical values stored in said memory means; arithmetic means, connected to said memory means, for incrementing or decrementing a numerical value read from said memory means in response to an output pulse from manual operation means; and pulse generating means, connected to said arithmetic means, for generating pulses of a frequency which is proportional to an incremented or decremented numerical value from said arithmetic means.
Claim 3
Dependent Claim
38 words
A feed speed control system according to claim 1, in which said arithmetic means increments or decrements said numerical value stepwise by unit values or stepwise geometrically whenever said manual operation means issues an output pulse. or 2
Claim 4
Dependent Claim
29 words
A feed speed control system according to claim 14 in which a numerical value delivered by said arithmetic means is stored in said memory means. 2 or 3 ,
Claim 5
Dependent Claim
41 words
A feed speed control system according to claim 14 in which said manual operation means produces up-pulses and down-pulses, said arithmetic means responding to an up-pulse to increment said numerical value, and responding to a down-pulse to decrement said numerical value.
Claim 6
Dependent Claim
53 words
A feed speed control system according to any preceding claim, in which said command means includes input means for entering machining data pertaining to a workpiece, output pulses from said pulse generating means being employed to control the feed speed of the movable member which is adapted to machine the workpiece, any preceding
Claim 7
Dependent Claim
35 words
A feed speed control system according to any preceding claim in which said command means includes storage means for storing feed speed commands, and read means for reading feed speed commands from said storage means.
Claim 8
Dependent Claim
22 words
A feed speed control system according to any preceding claim, in which said arithmetic means includes a register and an arithmetic circuit.
Claim 9
Dependent Claim
43 words
A feed speed control system according to claim 7, in which said arithmetic means is provided with a conversion memory, which is addressed by an output from said arithmetic circuit, for storing numerical values corresponding to a plurality of feed speeds. any preceding
Claim 10
Dependent Claim
71 words
A feed speed control system according to any preceding claim, in which said pulse generating means includes: a register connected to said arithmetic means; an accumulator; and an adder for adding the contents of said register and said accumulator whenever a clock pulse arrives, and for planting the result of the addition operation in said accumulator; the pulses generated by said pulse generating means being an overflow output from said accumulator.
Claim 11
Dependent Claim
56 words
A feed speed control system according to claim 9, in which the generated pulses have a frequency Fo which is decided by the frequency F of the clock pulses, a (h-bit) numerical value A which has been set in said register of the pulse generating means and the capacity 2 n - 1 of said accumulator.
Claim 12
Dependent Claim
106 words
A feed speed control system according to claim 1, in which said command means includes: storage means for storing feed speed commands, and read means, connected'to said memory means, for reading feed speed commands from said storage means; in which said arithmetic means includes: a register connected to said memory means, and an arithmetic circuit connected to said register; and in which said pulse generating means includes: a register connected to said arithmetic circuit; an accumulator; and an adder for adding the contents of said register and said accumulator whenever a clock pulse arrives, and for planting the result of the addition operation in said accumulator.
Claim 13
Dependent Claim
132 words
A feed speed control system according to claim 1, in which said command means includes: storage means for storing feed speed commands, and read means, connected to said memory means, for reading feed speed commands from said storage means; in which said arithmetic means includes: a register connected to said memory means; an arithmetic circuit connected to said register; and a conversion memory, which is addressed by an output from said arithmetic circuit, for storing numerical values corresponding to a plurality of feed speeds; and in which said pulse generating means includes: a register connected to said conversion memory; an accumulator; and an adder for adding the contents of said register and said accumulator whenever a clock pulse arrives, and for planting the result of the addition operation in said accumulator. ·
Claim 14
Dependent Claim
21 words
A feed speed control system as claimed in claim 1, wherein the memory means stores numerical values corresponding to feed speeds.
Claim 15
Dependent Claim
36 words
A feed speed control system as claimed in claim 8, wherein the memory.means stores addresses for addressing (after passing through the arithmetic circuit) the conversion memory, to read out therefrom numerical values corresponding to feed speeds.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.