摘要:
A hard coating of general formula (Al,Ti,Si)N or (Al,Ti,Si)(C,N) exhibiting excellent wear resistance and oxidation resistance properties, and a coated member such as a cutting tool etc. comprising a substrate and the hard coating formed on the surface of the substrate.
摘要:
A hard coating formed on a substrate material and having a first layer and a second layer of which, the first layer is a compound composed of one or more types of metallic elements selected to include at least aluminum or titanium from a group comprising aluminum, titanium and silicon; and also selected from one or more types of non-metallic elements from a group comprising boron, carbon and nitrogen, and the second layer is a lamination of AlBN on the surface.
摘要:
A coated member comprising a substrate, an intermediate layer on the substrate consisting essentially of aluminum and titanium, and a hard coating of (Al, Ti) (N, C) on the intermediate layer. The coated member has an improved wear resistance because the intermediate layer raises the level of adhesion between the substrate and the hard coating.
摘要:
A numerical controller is capable of foreseeing the occurrence of interference during operation of a machine and securely preventing the interference. An advanced position calculating section determines advanced time for the next interference check, based on an end time point of an interference check by an interference checking device and the sum of a time required for the interference check, a time required for communication, a time required for decelerating and stopping a movable part, and a predetermined float. If an interference checking device detects interference, the interference checking device delivers an axis stop signal the movable part.
摘要:
When a servomotor (control axis) is coasting and rotating in a servo-off state in which no current is applied to the servomotor, this servo-off state is switched over to a servo-on state in which current is applied to the servomotor, and a position control and a speed control are started. An actual speed in servo-on state is obtained in speed obtaining means by a position/speed detector. Position command means obtains a command movement amount using the actual speed as an initial speed. A position deviation amount corresponding to the actual speed is calculated, a command movement amount, a position deviation amount, and a position deviation amount remaining in a position deviation counter in servo-on state with the sign thereof reversed are added to each other as a command amount to the position deviation counter.
摘要:
A CNC apparatus (10), wherein a PC circuit (300) for sequence control of a peripheral device is provided in addition to a PC circuit (200) for sequence control of a machine (60) to be numerical controlled. The sequence programs executed by the respective PC circuits are made capable of independently inputting to and outputting from EEPROMs (240, 340) and also made capable of independently editing and diagnosing. Further, signal transmission and reception between the PC circuits (200 and 300) so that both the sequence programs can be executed coordinately with each other.
摘要:
A closed caption decoder with a pause function suitable for learning a language comprising: a closed caption decode circuit for decoding closed caption signals included in video signals outputted from a video cassette recorder and for outputting a detection signal when a predetermined control code is decoded; a timer which measures an elapse of time from a time when the predetermined control code is decoded; and a pause control circuit for instructing the caption decode means to perform a pause operation of caption decode and the video cassette recorder to perform a pause of video reproduction when the detection signal is outputted form the closed caption decode circuit and for outputting a pause termination signal of caption decode to the closed caption decoder and a pause termination signal of video reproduction to the video cassette recorder when the timer measures a predetermined period of time.
摘要:
The present invention relates to an area cutting method for cutting the interior of an area (AR) by moving a tool along a plurality of offset paths successively offset in an inward direction from a closed curve (AR) specifying the area. The area cutting method includes determining whether the area (AR) bounded by the closed curve (OLC) is to be divided, obtaining, if division is necessary, division suitability a division value for all sets of apices, in which any two apices form a set, by using an evaluation function indicative of a preset division suitability or value, dividing the area by a straight line connecting the two apices (P5, P7) of the set having the maximum suitability, executing similar processing for each divided area (PG1, PG2), deciding tool paths on the basis of the final divided areas, and performing area cutting by moving a tool along the tool paths.
摘要:
The present invention relates to an area cutting method for cutting the interior of an area (AR) by moving a tool along a plurality of offset paths (CPT1, CPT2, . . . CPTn) successively offset in an inward direction from a closed curve (OLC) specifying the area (AR). In accordance with the area cutting method, the centroid (W) of the area is found and a check is performed as to whether the centroid lies inside the area. It is also checked whether line segments (L1, L2, L3, . . . ) connecting the centroid with the apices (P1, P2, . . . , P10) of the area intersect the closed curve (OLC'). If the centroid (W) lies within the area and none of the line segments intersect the closed curve, the area is not divided into a plurality of convex polygons even if the area is a concave polygon. Instead, each line segment is partitioned into a predetermined number of partitions and cutting is performed by moving the tool along a plurality of closed paths (CPT1-CPTn) connecting consecutive partitioning points Pi1 through Pi10 (i=a, b, . . . n) of the line segments.
摘要:
A machining load monitoring system to monitor a machining condition by comparing sampled data of a machining load in a trial cutting process and measured data thereof in an actual cutting process with each other precisely with respect to time. An NC command executing unit (1) executes NC commands, and updates a block number and an execution mode in an executed state table (2) when the execution of NC commands of one block is finished. A load monitoring unit (4) compares sampled data, stored in a sampled data table (3), of a machining load in a trial cutting process with measured data thereof in an actual cutting process at given intervals of time. When the block number in the executed state table (2) is updated, sampled data of a new block number are read from the sampled data table (3). The sampled data in the trial cutting process and the measured data in the actual cutting process are compared with each other at predetermined times, and an alarm is issued when the difference between the compared data reaches or exceeds a predetermined level.