Abstract:
A control device of the present invention estimates warm-up time that it takes for a warm-up of a machine based on the temperature of the machine to be warmed up and the saturation temperature that is unique to the machine. Warm-up start time is calculated based on the obtained warm-up time and predefined warm-up end time. In this way, the warm-up can be efficiently performed as the warm-up can be performed for an appropriate period of time in consideration of the saturation temperature unique to the machine.
Abstract:
A machine tool includes a table, a main shaft, and an electric heating piece. The table includes an upright post and a main shaft support element connected to the upright post. The main shaft is rotatably disposed at the main shaft support element of the table. The electric heating piece is disposed at the main shaft support element of the table and positioned on a side of the main shaft, wherein the side of the main shaft manifests a lower thermal deformation level. The regulation of the electric heating piece minimizes the nonlinear thermal deformation of the main shaft, thereby enhancing processing precision.
Abstract:
A control device of the present invention estimates warm-up time that it takes for a warm-up of a machine based on the temperature of the machine to be warmed up and the saturation temperature that is unique to the machine. Warm-up start time is calculated based on the obtained warm-up time and predefined warm-up end time. In this way, the warm-up can be efficiently performed as the warm-up can be performed for an appropriate period of time in consideration of the saturation temperature unique to the machine.
Abstract:
A computing device connects with a measurement machine. The measurement machine includes a raster ruler and a measurement unit. The computing device reads environmental temperatures from a temperature sensor. Compensation coefficients of the standard workpiece and compensation coefficients of the raster ruler are calculated. The computing device calculates total compensation coefficients of the standard workpiece and the raster ruler. When the measurement machine measures an object workpiece, the computing device calculates a total error of the object workpiece according to the total compensation coefficients of the standard workpiece and the total compensation coefficients of the raster ruler. Coordinates of the object workpiece are calculated according to the total error and mechanism coordinates of each axis of the measurement machine.
Abstract:
The invention concerns a measuring method applicable to a machine-tool (M) which consists in causing the tool (O) to contact a point selected as reference in the machining station by controlling said actuating means (200) which, through exceeding a force value defined as threshold, triggers the measurement so as to find out the value of the stroke performed and in repeating the operation to compare the values and to correct the values during the performance of the machining process. The invention also concerns the tool for implementing the method and the software product controlling same. The invention facilitates measurement on a machining station, integration of expansion phenomena, and measurement of the workpiece for the purpose of orientation.
Abstract:
A high throughput drilling system for printed circuit board hole formation. Two spindles are disposed at each spindle station, doubling the number of holes produced in a given time period. Each spindle in connected to an overhead linear drive by a mini slide. A first set of the spindles, one for each spindle station, is driven by a first X axis linear drive. A second set is driven by a second X axis linear drive. The work piece table is elongated to support work pieces for all stations, and is supported by a set of bearing guides, with outrigger bearings coupled to the table by flexure mounts that relieve stress due to differential temperature expansion rates between the work piece table and the base table. High speed spindles are employed to obtain higher productivity, with larger holes routed by router tools, eliminating the need for stocking large drill sizes on the system tool changer.
Abstract:
A centerless grinder 1 according to the present invention comprises a bed 108, a grinding wheel spindle stock 101, a regulating wheel spindle stock 102, a work rest 103, and the like. The grinding wheel spindle stock 101 and the regulating wheel spindle stock 102 are respectively moved toward and away from each other by feed devices 10, 10. The feed devices 10, 10 respectively comprise feed screws 11, 11 each having one end fixed to the work rest 103. Nuts 12, 12 are respectively retained in the grinding wheel spindle stock 101 and the regulating wheel spindle stock 102 in threading engagement with the feed screws 11, 11 so that axial movements thereof along the feed screws 11 are restricted and rotational movements thereof about axes thereof are permitted. The nuts 12, 12 are respectively rotated by driving motors 15, 15. In the centerless grinder 1, the feed screws 11, 11 are fixed to the work rest 103 and, therefore, even if the bed 108 is thermally deformed by heat generated during grinding, a reduction in machining accuracy can be minimized.
Abstract:
A spindle rotates within a housing on at least two antifriction bearings which have raceways that are inclined to the axis of the bearing and are otherwise configured to transfer thrust loading as well as radial loading. The bearings are mounted in opposition. One of the bearings has a race which fits into an actuator sleeve with an interference fit, and the actuator sleeve, in turn, is fitted into the housing, it having end regions that are located beyond the ends of the bearing. Here the sleeve is fitted to the housing with an interference fit and is further sealed to the housing. The actuator sleeve also has an intervening region between its two end regions, and here the actuator sleeve is located around the race. On its opposite face the actuator sleeve forms a chamber with the housing. When the chamber is pressurized, the intervening region of the sleeve flexes inwardly and contracts the race, thus altering the setting of the two bearings. Yet the end regions of the sleeve remain against the housing and the axis of rotation remains rigid. A control system monitors conditions, such as temperature, within the housing, and varies the pressure in the chamber behind the actuator sleeve, so that the setting in the bearings best accommodates the conditions under which the spindle operates.
Abstract:
A high throughput drilling system for printed circuit board hole formation. Two spindles are disposed at each spindle station, doubling the number of holes produced in a given time period. Each spindle in connected to an overhead linear drive by a mini slide. A first set of the spindles, one for each spindle station, is driven by a first X axis linear drive. A second set is driven by a second X axis linear drive. The work piece table is elongated to support work pieces for all stations, and is supported by a set of bearing guides, with outrigger bearings coupled to the table by flexure mounts that relieve stress due to differential temperature expansion rates between the work piece table and the base table. High speed spindles are employed to obtain higher productivity, with larger holes routed by router tools, eliminating the need for stocking large drill sizes on the system tool changer.
Abstract:
A lathe each or lathes of a machining system comprises a head stock, which is transferred on a rail mechanism. The rail mechanism includes a vertically guiding rail which is mounted on a horizontally guiding rail. A turret has a turret support which has a pair of turret support attaching surfaces. The turret is attached with either of turret support attaching surfaces. A extruded horizontally guiding rail is located between both the bed bodies, each of which is included in each of the lathes. The extruded horizontally guiding rail is identical with a connecting guiding rail which connects the one horizontally guiding rail of the one lathe with the other horizontally guiding rail of the other lathe. A work stocking means is located between the bed bodies. A reversing means for reversing works is provided with the head stock.