摘要:
A grinding apparatus for glass panes includes a slide and a grinding head with a grinding tool mounted on the slide. The grinding head is capable of rotation through 360.degree. during movement of the slide by an X-Y path control. A motor drives the grinding head under control of control signals derived directly during the grinding process from signals taken from the information carrier determining the X-Y path control of the slide.
摘要:
Apparatus is disclosed for grinding the edges of a glass sheet which is positioned on a motor driven rotary table. The apparatus includes a grinding disc mounted to rotate in a toolholder which may be moved in relation to the axis of rotation of the rotary table by a constant torque motor so as to apply a constant grinding pressure between the grinding tool and the glass sheet. A plurality of manometer capsules or other pressure measuring devices whose voltage outputs depend on applied pressure, are used to produce signals to regulate the constant grinding force. The toolholder is movably mounted on a larger positioning carriage which can also be moved in relation to the axis of rotation of the rotating table in order to compensate for irregular glass sheet shapes. This positioning is effected by signals from a distance to voltage converter fed into an adjustment circuit which drives a positioning motor.
摘要:
A form-cutting machine is disclosed for cutting a form in a flat surface of a sheet of material such as glass in response to a numerical control signal, the shape of the form being determined by the numerical control signal. The form-cutting machine comprises a frame, sheet-support means for supporting the sheet of material to be cut, an X-direction carriage-positioning assembly, a Y-direction carriage-positioning assembly, and a tool carriage having a cutting tool mounted on it so that the cutting tool can be positioned in a plane in which the cut is to be made. Each carriage-positioning assembly includes a carriage support member which extends generally perpendicular to a direction of motion, two guide members fixed to the frame which are spaced apart from one another and extend generally parallel to the direction of motion, and two sliders connected to ends of the carriage support member and slideably mounted on the two guide members. Each carriage-positioning assembly also includes a drive motor fixedly secured to the frame for moving the carriage-support member and toothed-belt means for connecting the drive motor and the carriage support member so that motion produced by a motor is imparted to the support member with substantially no slippage. The tool carriage is slideably mounted on the two substantially perpendicular carriage-support members, so that moving the carriage support members causes the cutting tool to move in a plane. The form-cutting machine further comprises circuit means connected to the drive motors so that the carriage support members and, consequently the tool carriage, are positioned in response to the numerical control signal.
摘要:
Method for correcting the control program of an automatic glass cutting machine including the steps of adding in counters signal pulses representative of travel of a scanning head in X and Y directions, checking the counter totals at the starting and end points of travel of the scanning head and introducing pulses in the program to bring the counter totals to a zero value.A device for correcting the control program of an automatic glass cutting machine having counters for adding signal pulses representative of travel of a scanning head in X and Y directions and a pulse generator for each counter which may put a required number of pulses into memory to bring the total count in the counters to zero at the completion of travel of the scanning head.
摘要:
An electric control system for a numerically-controlled form-cutting machine is disclosed. The form-cutting machine has two drive motors for moving a cutting tool respectively in an X direction and a Y direction. The control system comprises X-channel and Y-channel program-encoding means for encoding a program for numerically controlling the motion of the cutting tool in the X and Y directions respectively. The control system further comprises a magnetic-tape unit, for example, a cassette recorder, which can record the encoded programs on two tracks of magnetic tape. The control system further comprises X-channel and Y-channel program-decoding means for converting the signals played back from the magnetic-tape unit into signals suitable for controlling the motion of the cutting tool. The control system also includes conductive means interconnecting the components of the system.
摘要:
Apparatus and method for moving a glass mass, such as a glass sheet in horizontal attitude through a bending section of a heating oven. The glass sheet at a deformation temperature is imparted movement along the conveyor system including a plurality of rollers, and a gaseous flow at high temperature, having a flow speed which varies continuously across the width of the glass sheet, impinges on its lower surface to at least partially balance the weight of the glass sheet in regions requiring good optical quality.
摘要:
The invention is in a process, and the apparatus, for path control of a processing tool of a grinding machine for an all-around edge grinding of a glass pane. A cross sled supports the processing tool for movement in an X-Y coordinate system wherein the path of movement of the cross sled is controlled by a program. The path control, however, is critically controlled by the use of a scanning instrumentality including a scanning organ which scans the edge of the glass pane along a path of movement in front of the processing tool. The scanning organ is supported by an arm articulated about the axis of the processing tool. The scanning organ leads the processing tool by a set distance, equal to the length of the arm, and determines the values for the X- and the Y-coordinates. The values that are developed by the scanning organ are stored in a sliding register having an input from each of the two axes. A signal developed by the sliding register is used for the control of the X-Y adjusting motors provided for moving the cross sled.
摘要:
A system for control of movement of a cross sled which follows movement in an X-Y coordinate system according to a stored program, and for extending or shortening the path of movement either in the X-direction or Y-direction, or both directions.
摘要:
A carriage carrying a cutting tool is guided along a predetermined path of travel, and motive power is provided by a linear induction motor having an armature mounted on the carriage and a plurality of short inductor windings discontinuously spaced along the path of travel. Means actuated by the carriage energizes predetermined windings successively in turn. Elastic means reverses the carriage at the end of the path of travel and switch means reverses the power on the return trip. D-C braking is provided as the carriage approaches its starting position.
摘要:
The invention relates to machining of glass sheets and in particular to holding of said glass sheets during grinding of their edges. The glass sheets are locked on their work plate with an electromagnet. This locking provides an effective holding while freeing space above the glass sheets.