TW201413409A - Wireless measurement compensation device for multi-axis machine tool - Google Patents

Abstract

This invention relates to a wireless measurement compensation device for a multi-axis machine tool, which is provided with a sensing head, a lens set, a signal processing set, and a wireless communication set. The sensing head is provided with at least one sensing set. The lens set is provided with a spherical lens. The signal processing set is connected with the at least one sensing set and provided with a processing program. The wireless communication set is combined with the sensing head and the signal processing set and is provided with a wireless emitting module, a wireless transceiving module and a wireless receiving module. The wireless emitting module is electrically connected with each sensor. The wireless transceiving module is electrically connected with the processing program of the signal module. The wireless receiving module is electrically connected with a controller of a multi-axis machine tool, so as to provide a wireless measurement compensation device allowing convenient assembly, automatic measurement compensation and reduced measurement costs.

Description

Wireless measuring and compensating device for multi-axis machine tool

The invention relates to a wireless measurement and compensation device, in particular to a wireless measurement and compensation device for measuring the operation of a multi-axis machine tool.

According to the improvement of multi-axis machining technology in recent years, multi-axis machine tools have been gradually valued and used by the industry. Currently, there are only non-contact instruments (Non-bar or R-test) and contact probes on the market. The measuring device can detect the performance of the multi-axis machine tool. In use, the contact instrument (Non-bar) can detect the dynamic/static performance of the multi-axis machine tool, but it needs offline detection, and only the contact probe only It can detect the static performance of the multi-axis machine tool, but it can be tested on-line; however, the existing measuring device can measure the error of the multi-axis machine tool and compensate and improve it, thus improving the machining accuracy of the multi-axis machine tool. The measurement device may be interfered by the winding of the transmission line of the measuring device itself, so that when the multi-axis tool machine is measured, the multi-axis machine tool cannot be processed, and the multi-axis machine tool is relatively increased. Non-production time, even affecting the efficiency of the entire production line, resulting in delays; in addition, the existing measuring device is not connected with the controller of the computer and the controller of the multi-axis machine tool Connection, therefore, when the existing measuring device measures the error value, the error compensation cannot be automatically input into the multi-axis machine tool controller, but must be compensated by manually interpreting the error value and manually inputting the error value. Actions, which are quite inconvenient and time consuming to operate, will increase the cost and time required for measurement, and there are improvements.

Therefore, the present inventors have finally developed a present invention which can improve the existing defects, in view of the inconvenience of the operation of the multi-axis machine tool measuring device and the high cost of measurement, and through continuous research and experimentation.

The object of the present invention is to provide a multi-axis machine tool wireless measurement and compensation device, which is capable of dynamically measuring a multi-axis machine tool through optical elements and wireless transmission, thereby providing a convenient assembly and automatic measurement. Compensation and can reduce the purpose of measuring costs.

In order to achieve the above object, the present invention provides a multi-axis machine tool wireless measurement and compensation device, which comprises a sensing head, a lens group, a signal processing group and a wireless communication group, wherein: the sensing head is provided There is at least one sensing group, each sensing group is provided with a light source and a sensor, wherein the sensor is opposite to the light source and is provided with a sensing receiving surface perpendicular to the light beam of the light source; The lens assembly is provided with a spherical lens, so that the light source of each sensing group can be directed to the corresponding sensor via the spherical lens; the signal processing group is connected to the sensor of the at least one sensing group, thereby Receiving a signal output by each sensor, the signal processing group is provided with a processing program for performing processing processing and analyzing and detecting; and the wireless communication group is combined with the sensing head and the signal processing group and is provided with a wireless a transmitting module, a wireless transceiver module, and a wireless receiving module. The wireless transmitting module is disposed on the sensing head and electrically connected to the sensors to receive sensing signals of the sensors. The wireless transceiver module Combined with the signal properties module on and electrically connected to the processing program, whereby the wireless transmission module receives the transmitted wireless signals, the wireless receiving module system The utility model is disposed on the multi-axis machine tool and electrically connected to a controller for receiving the wireless signal transmitted by the wireless transceiver module.

Further, the sensing head is disposed on a main shaft of a multi-axis machine tool and is provided with a coupling seat, a first sensing group and a second sensing group, wherein the coupling base is provided with a bottom plate, and the coupling base is One side of the bottom plate is convexly provided with a plurality of bonding plates, and the bonding seat is convexly disposed at a center of the other side of the bottom plate to be coupled with a coupling rod for coupling with a multi-axis machine tool spindle, the first sensing The first light source and a first sensor are disposed on the binding base, and the first light source is disposed on one of the joints of the joint, and the first sensor is coupled to the joint The other sensor board is disposed opposite to the first light source, the first sensor is provided with a sensing receiving surface perpendicular to the first light source beam; and the second sensing group is disposed on the combination The second sensing group is provided with a second light source and a second sensor, wherein the second light source is disposed on the combined seat. The second sensor is disposed on the bonding board of the first sensing group, and the second sensor is disposed on the bonding bottom of the bonding base and the second Facing a source, wherein the second sensor system is provided perpendicular to the sensing surface receives a light beam and the second light source into each other.

Further, the lens assembly is disposed on the working platform of the multi-axis machine tool and is provided with a support rod and a spherical lens. The support rod is fixedly coupled with the working platform of the multi-axis machine tool and the top end is extended. The ball lens is fixed between the light sources and the corresponding sensors, and the spherical lens is fixed on the top end of the support rod, so that the light source of each sensing group can be directed to the corresponding sense through the spherical lens. Detector.

Preferably, the wireless communication group is Bluetooth, infrared or radio, etc. The way to signal transmission.

Preferably, the wireless transmitting module is disposed on the bottom plate of the binding base, and the wireless transceiver module is electrically connected to the processing program in combination with a universal serial bus of the signal module.

Preferably, the wireless transmitting module is powered by a lithium ion battery, and the wireless transceiver module is powered by a universal serial bus of the signal processing group, and the wireless receiving module is powered by the controller. .

Preferably, each sensing group is respectively provided with a lens between the light source and the sensor, so that the light beams of the respective light sources are corrected into a collimated light and irradiated into the corresponding sensors.

Preferably, the bottom end of the support rod is provided with a magnet attracted to the working platform, so that the support rod can be stably disposed on the working platform.

Preferably, the lens assembly is mounted on the main shaft of the multi-axis machine tool, and the sensing head is mounted on the working platform for measuring operation.

Preferably, each sensor is a photoelectric sensor.

According to the above technical means, the multi-axis tool machine wireless measuring and compensating device of the present invention only needs to install the sensing head and the lens group on the multi-axis tool machine main shaft and the working platform during the measurement, and uses the light source to detect The manner of picking up the positioning and the angle error of the mechanism, sensing the relative movement between the input beam and the sensing receiving surface by receiving the displacement characteristics of the continuous beam by the two sensors, and calculating the position of the spherical center of the spherical lens The error of the multi-axis machine tool can be obtained, and a wireless transmission mechanism is provided through the wireless communication group to automatically input the compensation value, thereby providing a multi-axis tool that facilitates assembly, automatic measurement compensation, and reduces measurement cost. Machine wireless measurement and compensation device.

In order to understand the technical features and practical effects of the present invention in detail, and in accordance with the contents of the specification, the following further describes the preferred embodiment shown in the drawings (shown in FIGS. 1 to 4). The invention provides a multi-axis machine tool wireless measurement and compensation device which is convenient for assembly, automatic measurement compensation and can reduce measurement cost through a simplified optical principle, and is provided with a sensor head 10, a lens group 20, and a lens assembly. The signal processing unit 30 and a wireless communication unit 40 are disposed on the main shaft 51 of a multi-axis machine tool 50 and are provided with a coupling seat 11, a first sensing group 12 and a second sense. The test set 13 is provided with a bottom plate 111. The joint 11 has a plurality of joint plates 112 protruding from one side of the bottom plate 111, and the joint seat 11 is at the center of the other side of the bottom plate 111. A coupling rod 113 for coupling with a spindle 51 of a multi-axis machine tool 50 is disposed. The first sensing group 12 is disposed on the coupling base 11 and is provided with a first light source 121 and a first sensor. The first light source 121 is disposed on one of the bonding plates 112 of the binding base 11 The first sensor 122 is disposed on the other bonding board 112 of the bonding pad 11 and faces the first light source 121. The first sensor 122 is provided with a beam of light from the first light source 121. a vertical sensing receiving surface 123; the second sensing group 13 is disposed on the binding base 11 and has an orthogonal spatial relationship with the first sensing group 12, and the second sensing group 13 is provided with a a second light source 131 and a second sensor 132, wherein the second light source 131 is disposed on the bonding board 112 of the first sensing group 12, and the second sensor 132 is The second sensor 132 is disposed on the bonding base 112 of the binding base 11 and faces the second light source 131. The second sensor 132 is provided with a sensing receiving surface 133 perpendicular to the second light source 131. good The light sources 121 and 131 can be respectively a collimated light source or a focusing light source, and each of the light sources 121 and 131 can be a visible light or an invisible light, thereby being applied to the measurement of the absolute distance, and the other sensing groups. 12, 13 is shown in Figure 5 between the light source 121, 131 and the sensors 122, 132 are respectively provided with a lens 124, 134, whereby the light beam of each light source is corrected to a collimated light and irradiated to the corresponding Preferably, each of the sensors 122, 132 is a photoelectric sensor; the lens assembly 20 is disposed on the working platform 52 of the multi-axis power tool 50 and is provided with a support. The rod 21 and a spherical lens 22, wherein the support rod 21 is fixedly coupled with the working platform 52 of the multi-axis machine tool 50, and the top end extends into the joint seat 11 and is interposed between the light sources 121, 131 and corresponding senses. Between the detectors 122, 132, preferably, the bottom end of the support rod 21 is provided with a magnet 23 attracted to the working platform 52, so that the support rod 21 can be stably disposed on the working platform 52. The spherical lens 22 is fixed to the top end of the support rod 21, so that the light sources 121, 131 of the sensing groups 12, 13 can pass through the spherical shape. The mirror 22 is directed to the corresponding sensors 122, 132; in addition, the wireless measuring and compensating device of the multi-axis machine tool of the present invention can be divided into two embodiments when being erected, wherein the above embodiment is The sensing head 10 is mounted on the main shaft 51 of the multi-axis machine tool 50, and the lens unit 20 is mounted on the working platform 52. The present invention can also be used to mount the lens unit 20 on the multi-axis machine tool 50. The spindle 51 is mounted on the working platform 52 for measurement operation; the signal processing group 30 is connected to the sensors 122, 132 of the two sensing groups 12, 13 for receiving The signals output by the sensors 122 and 132 are preferably wirelessly connected to the sensors. 122, 132 are connected, the signal processing group 30 is provided with a processing program 31 for performing arithmetic processing and analysis detection; and the wireless communication group 40 is connected to the sensing head 10, the signal processing group 30 and the multi-axis The power tool 50 is combined with a wireless transmitting module 41, a wireless transceiver module 42 and a wireless receiving module 43. The wireless transmitting module is disposed on the bottom plate 111 of the binding base 11 and is respectively sensed. The transceivers 122 and 132 are electrically connected to receive the sensing signals of the sensors 122 and 132. Preferably, the wireless transmitting module 41 can be powered by a lithium ion battery, and the wireless transceiver module 42 is In combination with a universal serial bus (USB) of the signal module 30, the processing module 31 is electrically connected to receive the wireless signal transmitted by the wireless transmitting module 41, preferably The wireless transceiver module 42 is powered by the universal serial bus of the signal processing group 30. The wireless receiving module 43 is connected to the multi-axis power tool 50 and electrically connected to a controller 53. Receiving the no-transmitted by the wireless transceiver module 42 Preferably, the wireless receiving module 43 is powered by the controller 53. Preferably, the wireless communication group 40 transmits signals by using a Bluetooth (Blue Tooth) method, which is easy to use and small in size. Low power consumption, multi-point transmission and reception, no directivity, no need to align with the receiving end, no obstruction by obstacles, and still move position when transmitting.

In the present invention, the multi-axis tool machine wireless measuring and compensating device is fixedly coupled with the main shaft 51 of a multi-axis machine tool 50, as shown in FIGS. 2 to 4, and the The support rod 21 of the lens group 20 is combined with the working platform 52 of the multi-axis power tool 50 such that the spherical lens 22 is disposed between the respective coupling plates 112 of the coupling seat 11 and the X-axis of the multi-axis machine tool is moved. With the Y-axis, when the two light sources 121, 131 can pass through the spherical lens 22 and illuminate the corresponding sensors 122, 132, the two sensing receiving surfaces 123, 133 respectively generate the incident position of the light beam. a sensing signal, and the generated sensing signal is transmitted to the wireless transmitting module 41, and the wireless transmitting module 41 transmits the received sensing signal to the wireless transmitting and receiving mode by way of wireless transmission. The module 42 is input to the processing program 31, and the two sensing signals can be processed. The sensing signals of the first sensing group 12 can be used to measure the other two vertical axes as shown in FIG. (Y-axis and Z-axis) offset, and the measurement signal transmitted through the second sensing group 13 The offset of the other two vertical axes (X-axis and Z-axis) is measured, and the spherical center position of the spherical lens 22 is calculated and analyzed to obtain the dynamic and static errors of the multi-axis machine tool 50. In the following description, the beam direction sense of the first light source 121 is parallel to the X-axis direction of the multi-axis machine tool 50. Therefore, the first sensor 122 can obtain the Y-axis (PSD _1Y ) and Z (PSD _1Z). The signal in the axial direction; and the beam direction of the second light source 131 is parallel to the Y-axis direction of the multi-axis power tool 50. Therefore, the second sensor 132 can obtain the X-axis (PSD _2X ) and the Z (PSD). _2Z ) Axis direction signal; the offset of the center of the sphere can be obtained by the following formula: the offset of the spherical X-axis direction: △X=PSD _2X ; the spherical Y-axis direction offset: △ Y = PSD _1Y ; and the spherical X-axis direction offset: ΔZ = (PSD _1Z + PSD _2Z ) / 2.

Furthermore, the wireless measuring and compensating device of the multi-axis machine tool of the present invention can be divided into two embodiments when operating, and an embodiment of the present invention is to fix the sensing head 10 If the two light sources 121, 131 are emitted and passed through the moving spherical lens 22 and enter the two sensors 122, 132 respectively, the offsets of the other two vertical axes can be measured, and In another embodiment, the spherical lens 22 is fixed, and the sensing head 10 is moved parallel to the axis to be measured. When the two sensors 122, 132 receive the light source passing through the spherical lens 22, the two sensors 122, 132 can also be measured. The dynamic and static errors of the multi-axis machine tool 50 can be obtained by calculating the offset of the other two vertical axes, and then calculating and analyzing the spherical center position of the spherical lens 22; the processing program 31 of the signal processing group 30 is transmitted through The sensing head 10 and the lens group 20 calculate the error value of the multi-axis power tool 50, convert it into a compensation value wireless signal corresponding to the error value, and wirelessly transmit the wireless signal through the wireless transceiver module 42. To the wireless receiving module 43, the wireless receiving module transmits the compensation value wireless signal to the controller 53, and the automatic error compensation of the multi-axis power tool 50 can be performed via the controller 53.

According to the above technical means, the multi-axis machine tool wireless measuring and compensating device of the present invention only needs to mount the sensing head 10 and the lens group 20 on the main shaft 51 of a multi-axis machine tool 50 during measurement. And the working platform 52, and the wireless transmitting module 41, the wireless transceiver module 42 and the wireless receiving module 43 of the wireless communication group 40 are respectively disposed on the sensing head 10, the signal processing group 30 and the control After the sensor 53, the two sensors 122, 132 sense the displacement characteristics of the continuous beam to sense the relative movement between the input beam and the sensing receiving surface 123, 133, and the wireless transmitting module transmits the signal to Calculating and analyzing the spherical center position of the spherical lens 22 in the signal processing group 30, the error value of the multi-axis power tool 50 can be obtained; At this time, the compensation value wireless signal corresponding to the error value is transmitted to the wireless receiving module 43 through the wireless transceiver module 42 to perform error on the multi-axis power tool 50 through the controller 53. Compensation, effectively transmitting the measurement signal wirelessly, can not only avoid the situation that the existing measurement device is prone to the winding and interference of the transmission line, and the sensing head 10 can be regarded as the multi-axis machine tool after the measurement is completed. The tool 10 is received in the tool magazine (not shown) of the multi-axis machine tool 50 through the signal transmission mode of the controller 53 to further avoid the interference error of the human operation. The utility model provides a multi-axis tool machine wireless measurement and compensation device which is convenient for assembly, automatic measurement and compensation, and can reduce measurement cost.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art can use the present invention without departing from the scope of the present invention. Equivalent embodiments of the invention may be made without departing from the technical scope of the present invention.

10‧‧‧Sensing head

11‧‧‧ joint

111‧‧‧floor

112‧‧‧Combination board

113‧‧‧Link rod

12‧‧‧First Sensing Group

121‧‧‧First light source

122‧‧‧First sensor

123‧‧‧Sensing receiving surface

124‧‧‧ lens

13‧‧‧Second Sensing Group

131‧‧‧second light source

132‧‧‧Second sensor

133‧‧‧Sensing receiving surface

134‧‧‧ lens

20‧‧‧ lens group

21‧‧‧Support rod

22‧‧‧spheric lens

23‧‧‧ Magnet

30‧‧‧Signal Processing Group

31‧‧‧Processing program

40‧‧‧Wireless Communications Group

41‧‧‧Wireless Transmitter Module

42‧‧‧Wireless transceiver module

43‧‧‧Wireless receiving module

50‧‧‧Multi-axis machine tool

51‧‧‧ Spindle

52‧‧‧Working platform

53‧‧‧ Controller

1 is a perspective view showing the appearance of a wireless measuring and compensating device for a multi-axis machine tool according to the present invention.

2 is a schematic perspective view of the wireless measuring and compensating device of the present invention installed on a multi-axis machine tool.

3 is a partially enlarged perspective view showing the wireless measuring and compensating device of the present invention installed in a multi-axis machine tool.

4 is a block diagram showing the operation of the wireless measurement and compensation device of the multi-axis machine tool of the present invention.

FIG. 5 is a perspective view showing the appearance of another embodiment of the sensing head of the present invention.

10‧‧‧Sensing head

11‧‧‧ joint

111‧‧‧floor

112‧‧‧Combination board

113‧‧‧Link rod

121‧‧‧First light source

122‧‧‧First sensor

123‧‧‧Sensing receiving surface

131‧‧‧second light source

132‧‧‧Second sensor

133‧‧‧Sensing receiving surface

20‧‧‧ lens group

21‧‧‧Support rod

22‧‧‧spheric lens

23‧‧‧ Magnet

30‧‧‧Signal Processing Group

31‧‧‧Processing program

40‧‧‧Wireless Communications Group

41‧‧‧Wireless Transmitter Module

42‧‧‧Wireless transceiver module

43‧‧‧Wireless receiving module

53‧‧‧ Controller

Claims (10)

A wireless measurement and compensation device for a multi-axis machine tool includes a sensing head, a lens group, a signal processing group and a wireless communication group, wherein: the sensing head is provided with at least one sensing group, each The sensing group is provided with a light source and a sensor, wherein the sensor is opposite to the light source and is provided with a sensing receiving surface perpendicular to the light beam of the light source; and the lens assembly is provided with a spherical lens. The light source of each sensing group can be directed to the corresponding sensor via a spherical lens; the signal processing group is connected to the sensor of the at least one sensing group, thereby receiving the output of each sensor The signal processing unit is provided with a processing program for performing arithmetic processing and analysis and detection; and the wireless communication group is combined with the sensing head and the signal processing group and is provided with a wireless transmitting module and a wireless transmitting and receiving module. And a wireless receiving module, the wireless transmitting module is disposed on the sensing head and electrically connected to each of the sensors, so as to receive the sensing signals of the sensors, the wireless transceiver module is coupled to the The signal module is combined and The processing program is electrically connected to receive the wireless signal transmitted by the wireless transmitting module. The wireless receiving module is disposed on the multi-axis machine tool and electrically connected to a controller for receiving the wireless transceiver. The wireless signal transmitted by the module. The wireless measuring and compensating device for a multi-axis machine tool according to claim 1, wherein the sensing head is disposed on a main shaft of a multi-axis machine tool and is provided with a coupling seat, a first sensing group and a second sensing group, the binding base is provided with a bottom plate, the binding seat is convexly disposed on one side of the bottom plate to form a plurality of bonding plates, and the binding seat is convexly disposed at a center of the other side surface of the bottom plate The first sensing group is combined with a multi-axis machine tool spindle The first light source is disposed on one of the bonding plates, and the first sensor is disposed on one of the bonding pads, and the first sensor is coupled to the bonding pad. a first board is disposed opposite to the first light source, the first sensor is provided with a sensing receiving surface perpendicular to the first light source beam; and the second sensing group is disposed on the binding base Up and in an orthogonal spatial relationship with the first sensing group, the second sensing group is provided with a second light source and a second sensor, wherein the second light source is disposed in the binding base The second sensor is disposed on the bonding board of the first sensing group, and the second sensor is disposed on the bonding bottom of the bonding base to face the second light source, wherein the second sensor is provided with the first The two source beams are perpendicular to each other to sense the receiving surface. The wireless measurement compensating device for a multi-axis machine tool according to claim 2, wherein the lens assembly is disposed on a working platform of the multi-axis machine tool and is provided with a support rod and a spherical lens, the support rod system Cooperating with the working platform of the multi-axis machine tool, and the top end is inserted into the coupling seat between the light sources and the corresponding sensors, and the spherical lens system is fixed on the top end of the support rod, so that each The light source of the sensing group can be directed to the corresponding sensor via the spherical lens. The wireless measurement and compensation device for a multi-axis machine tool according to claim 1, 2 or 3, wherein the wireless communication group performs signal transmission by digital or analog wireless communication. The wireless measurement and compensation device for a multi-axis machine tool according to claim 4, wherein the wireless transmission module is disposed on a bottom plate of the binding base, and the wireless transceiver module is coupled to the signal module The universal serial bus is electrically coupled to the processing program in combination. The wireless measurement and compensation device for a multi-axis machine tool according to claim 5, wherein the wireless transmission module is powered by a lithium ion battery, and the wireless transceiver module is connected by a universal sequence of the signal processing group. The row provides power, and the wireless receiving module is powered by the controller. The wireless measurement and compensation device for a multi-axis machine tool according to claim 6, wherein each of the sensing groups is respectively provided with a lens between the light source and the sensor, thereby correcting the light beams of the respective light sources to a standard. Straight light and illuminate the corresponding sensor. The wireless measurement compensating device for a multi-axis machine tool according to claim 7, wherein the bottom end of the support rod is provided with a magnet attracted to the working platform, so that the support rod can be stably disposed on the working platform. on. The wireless metrology compensating device for a multi-axis machine tool according to claim 8, wherein the lens assembly is mounted on a main shaft of the multi-axis machine tool, and the sensing head is mounted on the working platform for measurement. operating. The wireless measurement compensating apparatus for a multi-axis machine tool according to claim 9, wherein each of the sensors is a photoelectric sensor.