TWI441708B - Automatic compensating system for machine tools - Google Patents

Description

Machine tool automatic edge correction system

The invention relates to a machine tool automatic edge-finishing correction system, in particular to a machine tool automatic edge-finishing correction system.

According to the numerical control tool machine, in order to improve the correctness and accuracy of the machining, it is necessary to confirm the coordinate setting of the tool origin to the tool edge before machining and correct the error value. Side actions to correct.

Traditionally, the edge-finishing action of the machine tool is to set the edge-finding probe on the main shaft, and to move the probe to touch the square fixture on the workbench, thereby measuring the distance value and obtaining the distance value. The error value, the staff is operating, in order to save time, the rapid feed function on the machine tool is used to make the probe quickly approach the square fixture. When the probe is close to the edge of the square fixture, fine adjustment is performed through the hand wheel. After obtaining the relevant values, the coordinates are manually copied and the coordinates are additionally input for correction; however, in practice, this manual operation requires the use of a hand wheel to slowly approach the square fixture, so the operation is performed. It is extremely time consuming and its accuracy is also affected by the operator's eyesight. Therefore, the method of artificial edge finding is extremely time consuming and inconvenient. In addition, after obtaining the error value, it is necessary to input manually, but it may Due to factors such as calculation errors or typos, getting the wrong correction value, even pressing the error when inputting the correction value, may not only reduce the processing accuracy, but also cause irreparable errors, which seriously affect the processing. Rate and yield; Thus, conventional edge finder performed manually, the correction approach has been unable to meet the high-precision, high-efficiency machining needs to be improved and urgent.

The object of the present invention is to provide an automatic edge-finishing correction system for a machine tool, which can quickly complete the edge-finding work, and automatically input the error value to correct, thereby saving time and reducing errors.

A second object of the present invention is to provide an automatic edge correction system for a machine tool, which can correct the position of the calibrator to correct or compensate the offset of the multi-axis stage, and reduce the position and search time of the compensation. The position of the contact probe relative to a calibrator can be accurately determined.

Another object of the present invention is to provide a machine tool automatic edge correction system that quickly and correctly determines the position of a reference point of a calibrator relative to a test multi-axis stage.

The automatic edge-finishing correction system for the machine tool capable of achieving the above object includes: a multi-axis stage for placing the processing material and the calibrator; and a contact probe disposed on the machine tool spindle and configured The calibrator contacting the multi-axis stage is configured to determine the reference point position by detecting the trigger calibrator position corresponding to the at least one trigger parameter and transmitting; the controller receiving the contact probe and contacting the calibrator Triggering parameters to generate a control signal to control the mover of the multi-axis stage to automatically correct the reference point of the multi-axis stage; a drive mechanism that reacts from a control signal of the controller for dynamic correction or The compensation causes the multi-axis stage to perform movement of three linear axes and two rotating axes to automatically compensate the displacement of the multi-axis stage.

Referring to FIG. 1 to FIG. 4 , the automatic edge correction system of the machine tool provided by the present invention mainly comprises: a multi-axis stage 1, a contact probe 2, a controller 3 and a driving mechanism 4; .

The multi-axis stage 1 is configured to mount a processing material 12 and a calibrator 11, and the aligner 11 mounts a multi-axis stage in which the X, Y, A, and B directions are movable. 1; the contact probe 2 is disposed on the machine tool spindle 21 and is configured to contact the calibrator 11 on the multi-axis stage 1 by detecting the position of the trigger aligner 11 corresponding to at least one trigger parameter and After transmission, to define a reference point position; the controller 3 receives the trigger parameter of the contact probe 2 after contacting the calibrator 11 to generate a control signal, thereby controlling the movement of the multi-axis stage 1 To automatically correct the reference point of the multi-axis stage 1; the drive mechanism 4 is responsive to a control signal from the controller 3 for dynamically correcting or compensating for the multi-axis stage 1 to perform three linear axes and two The movement of the rotating shaft is used to automatically compensate the displacement amount of the multi-axis stage 1.

The invention is provided with a rotatable multi-axis stage 1 on the machine tool, and a spindle 21 corresponding to the multi-axis stage 1 is further provided on the machine tool, wherein the multi-axis stage 1 has at least one material for clamping processing. The 12-clamp and the calibrator 11 for finding the edge enable the machine tool to selectively rotate the multi-axis stage 1 by manual or program control, so that the aligner 11 of the multi-axis stage 1 can correspond upward to the spindle 21, and the spindle The cutting tool or the contact probe 2 can be selectively accessed by the tool magazine, and wherein the contact probe 2 is electrically conductive to generate a trigger parameter when the contact probe 2 touches the edge or the top surface of the aligner 11 .

Referring to FIG. 5 to FIG. 12, a method for detecting a reference point position is mainly a detecting method for continuously checking the calibrator 11 disposed on the multi-axis stage 1, which is used for determining a calibrator 11 The position of one edge relative to a multi-axis stage 1 on which the workpiece 12 is placed includes at least: displacing the contact probe 2 in a spaced relationship around the aligner 11 of a multi-axis stage 1, wherein The contact probe 2 is moved from a known starting position to the aligner 11 of the multi-axis stage 1 and positioned on the calibrator 11; it is moved by the aligner 11 to the multi-axis stage 1 An edge of the calibrator 11; detecting an edge of the four-quadrant position of the calibrator 11 supported by the multi-axis stage 1; generating a trigger parameter after detecting the position; after the detecting, stopping moving to the edge The edge of the calibrator 11; a controller 3 connected to the contact probe 2 determines one of the multi-axis stages 1 according to the position data of the trigger parameter generated by each position of the contact probe 2 The position offset data of the reference point; and the controller 3 compares the position data and the position offset data, Controlling the drive mechanism 4 automatically compensate for multi-axis stage 1, the amount of displacement.

The reference point position is that the cutting tool held by the main shaft 21 has not been cut by the machining material 12, and the present invention has a multi-axis stage with the aligner 11 placed in the X, Y, A, and B directions. 1; in the contact probe 2 fixed at a position above the multi-axis stage 1, the drive mechanism 4 positions the multi-axis stage 1; the drive mechanism 4 directs the multi-axis stage 1 to the contact type The probe 2 is rotated to enable the aligner 11 to contact the contact probe 2; and when the aligner 11 of the multi-axis stage 1 is in contact with the contact probe 2, the contact probe is recorded by the controller 3 The needle 2 initially measures the first position data, the second position data, the third position data, the fourth position data, and the fifth position data of the aligner 11; when the processing material 12 placed on the multi-axis stage 1 is sandwiched by the spindle 21 After the cutting tool is processed, since the multi-axis stage 1 performs the movement of three linear axes and two rotating axes, the multi-axis stage 1 starts to generate an error value, and the controller 3 also includes a programmable detection, which allows Contact probe 2 during processing of processing material 12, spindle 21 replaces contact probe 2 Self-test of the reference point of the line, the controller 3 is connected to monitor the triggering parameters of the contact probe 2, and output the first position offset data, the second position offset data, the third position offset data, and the fourth position Offset data and fifth position offset data; the controller 3 compares the position data and the position offset data to determine when to control the drive mechanism 4 to automatically correct the multi-axis stage 1, or automatically compensate the displacement of the multi-axis stage 1 the amount. Thereby, the spindle 21 and the drive mechanism 4 can be automatically driven to perform the work of finding the edge of the contact probe 2 through the setting of the controller 3, and the error value is automatically obtained after the measurement, and the correction is automatically filled in, and the group is automatically added. It constitutes a machine tool that automatically finds the edge correction mechanism quickly and can avoid manual errors.

In summary, this case is not only innovative in terms of space type, but also can enhance the above-mentioned multiple functions compared with the customary items. It should fully meet the statutory invention patent requirements of novelty and progressiveness, and apply for it according to law. This invention patent application, in order to invent invention, to the sense of virtue.

1. . . Multi-axis stage

11. . . Calibrator

12. . . Processing material

2. . . Contact probe

twenty one. . . Spindle

3. . . Controller

4. . . Drive mechanism

1 is a schematic perspective view of an automatic edge-finishing correction system of a machine tool according to the present invention;

Figure 2 is a partial enlarged view of a portion A of Figure 1;

3 is a schematic view showing the operation of the multi-axis stage as a position-aligning contact probe by a driving mechanism;

Figure 4 is a partial enlarged view of a portion B of Figure 3;

Figure 5 is a schematic view of the aligner of the multi-axis stage being prepared in contact with the contact probe;

6 is a schematic diagram of the contact of the calibrator of the multi-axis stage with the contact probe, illustrating that the controller records the first position data of the contact probe measurement calibrator;

7 and FIG. 8 are schematic diagrams of the contact probe being in preliminary contact with the first quadrant of the calibrator;

9 is a schematic diagram of the contact probe in the first quadrant contact of the calibrator, which illustrates that the controller records the second position data of the contact probe measurement calibrator;

10 is a schematic diagram of the contact probe in a second quadrant contact of the calibrator, illustrating that the controller records the third position data of the contact probe measurement calibrator;

Figure 11 is a schematic diagram of the contact probe in the third quadrant contact of the calibrator, which illustrates the controller recording the fourth position data of the contact probe measuring calibrator;

Figure 12 is a schematic illustration of the contact probe in the fourth quadrant contact of the calibrator, illustrating the controller recording the fifth position data of the contact probe assay calibrator.

1. . . Multi-axis stage

2. . . Contact probe

3. . . Controller

4. . . Drive mechanism

Claims (4)

The utility model relates to an automatic edge-finishing correction system for a machine tool, comprising: a machine tool, which is provided with a rotatable multi-axis stage, and a machine tool further has a spindle corresponding to the multi-axis stage, wherein the multi-axis stage has a Holding the chuck of the processing material and a calibrator for finding the edge, the tool function can rotate the multi-axis stage, so that the calibrator of the multi-axis stage can correspond to the main axis upward; a contact probe has conductivity, when the contact type When the probe touches the edge or top surface of the four quadrant position of the calibrator, a trigger parameter can be generated and transmitted to define the position data; a controller is based on the position data of the trigger parameter generated by each position of the contact probe. Determining the position offset data of the reference point of the multi-axis stage, the controller compares the position data and the position offset data to generate a control signal, thereby controlling the mover of the multi-axis stage to automatically correct more A reference point of the axle stage; a driving mechanism that reacts from a control signal of the controller for dynamically correcting or compensating for the movement of the three linear axes and the two rotating axes by the multi-axis stage to automatically compensate Axial displacement of the stage. The automatic edge-finding correction system of the machine tool according to claim 1 , wherein the reference point position detecting method is mainly a detecting method capable of continuously checking the calibrator disposed on the multi-axis stage, The method for determining a position of an edge of a aligner relative to a multi-axis stage on which the processing material is placed, comprising: displacing the contact probe in a spaced relationship around a calibrator of a multi-axis stage, wherein The contact probe is moved from a known starting position to the calibrator of the multi-axis stage and positioned on the calibrator; the calibrator is moved up to an edge of the calibrator supported by the multi-axis stage; Detecting an edge of the four-quadrant position of the calibrator supported by the multi-axis stage; generating a trigger parameter after detecting the position; after the detecting, stopping moving to the edge of the calibrator; and connecting to the contact The controller of the probe determines the position offset data of one of the reference points of the multi-axis stage according to the position data of the trigger parameter generated by each position of the contact probe; and the controller compares the position data Position offset data And control the drive mechanism to automatically compensate the displacement of the multi-axis stage. The automatic edge-finding correction system of the machine tool according to the second aspect of the patent application, wherein when the calibrator is in contact with the contact probe, the controller records the contact probe to initially determine the first position data of the calibrator. , second location data, third location data, fourth location data, and fifth location data. The automatic edge-finding correction system of the machine tool according to claim 2 , wherein the controller also includes a programmable detection, which allows the contact probe to perform a reference point during processing of the processed material. Self-testing, the controller is connected to monitor the triggering parameters of the contact probe, and output the first position offset data, the second position offset data, the third position offset data, the fourth position offset data, and the fifth Position offset data.