Honing machine
First Claim
Patent Images
1. A honing machine comprising a spindle;
- an expandable honing stone carrier at the end of the spindle;
a drive motor for rotating the spindle;
a direct-current stroke motor for reciprocating the spindle with respect to a work-piece;
a position transducer arrangement for giving a digital output in accordance with the linear stroke position of the spindle with respect to the work-piece;
a micro-processor;
a memory unit for the micro-processor, which memory unit holds a predetermined acceleration profile look-up table; and
an input console for manually applying input parameters, the micro-processor being programmed (a) to accept inputs from the console from which can be derived at least the required start and end positions of the stroke and the required mid-stroke speed of the spindle, (b) to sample the input from the position transducer arrangement periodically, (c) to compare the actual position of the spindle with the look-up table to derive a position error signal whereby the stroke motor is driven to correct the error and cause the spindle to follow the acceleration profile alternately in acceleration and deceleration modes, (d) to cause the spindle to continue at the mid-stroke speed between acceleration and deceleration when the mid-stroke speed is reached, and (e) to cause switching at the mid-stroke position from acceleration to deceleration mode if the required mid-stroke speed has not been reached.
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Abstract
A honing machine in which a micro-processor controls reciprocation with respect to a work-piece of a spindle which carries honing stones, the micro-processor being associated with a memory unit which holds an acceleration profile in terms of position/time and being programmed to control reciprocation in accordance with the required acceleration characteristics. Variable stroke parameters and required mid-stroke speed are input from a console and the system ensures symmetrical honing under controlled acceleration regardless of any conflict between selected stroke length and mid-stroke speed.
21 Citations
7 Claims
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1. A honing machine comprising a spindle;
- an expandable honing stone carrier at the end of the spindle;
a drive motor for rotating the spindle;
a direct-current stroke motor for reciprocating the spindle with respect to a work-piece;
a position transducer arrangement for giving a digital output in accordance with the linear stroke position of the spindle with respect to the work-piece;
a micro-processor;
a memory unit for the micro-processor, which memory unit holds a predetermined acceleration profile look-up table; and
an input console for manually applying input parameters, the micro-processor being programmed (a) to accept inputs from the console from which can be derived at least the required start and end positions of the stroke and the required mid-stroke speed of the spindle, (b) to sample the input from the position transducer arrangement periodically, (c) to compare the actual position of the spindle with the look-up table to derive a position error signal whereby the stroke motor is driven to correct the error and cause the spindle to follow the acceleration profile alternately in acceleration and deceleration modes, (d) to cause the spindle to continue at the mid-stroke speed between acceleration and deceleration when the mid-stroke speed is reached, and (e) to cause switching at the mid-stroke position from acceleration to deceleration mode if the required mid-stroke speed has not been reached. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- an expandable honing stone carrier at the end of the spindle;
Specification