JPS60135162A - Nc data generator - Google Patents

Abstract

PURPOSE:To generate the NC data directly from the three-dimension coordinate data obtained by profile measurement by adding a data processing unit generating the NC data based on the three-dimension coordinate data of a model work determined by a measurement mechanism. CONSTITUTION:After a measuring piece 8 of a predetermined shape suitable for the machining condition is fitted to a spindle 7, it is moved in three dimension directions, and when it is brought into contact with the surface of a work, the data Dx-Dz in each axis at the time of the contact of the measuring piece 8 are detected by individual encoders 11-13 and are fed to a data processing unit 14. After the data Dx-Dz fed from individual encoders 11-13 are calculated by the data processing unit 14 based on the function word data preset by a setting unit 15, they are outputted as the NC data or three-dimension coordinate data. They are then punched on a tape with a tape perforator 16 and are outputted as an NC command tape 17. Accordingly, when the tape 17 is used with a general-purpose NC unit, products of the same shape as that of a model measured by a measurement mechanism 1 can be machined.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to the measurement of dimensions obtained by measuring the shape of a model when performing NC processing on a product that is the same as a model made by hand, machine processing, engraving, etc. The present invention relates to an NC data creation device that creates NC data that can be commanded to an NC device from coordinate data.

[Background Art] The most primitive method for creating an NC command tape is to create a process sheet from a design drawing, and then use a tape perforation machine to punch out the command contents on the tape in accordance with the process sheet. Is this method suitable for machining workpieces with relatively simple shapes? In addition, extremely complex calculations are required to machining complex shapes, especially curved shapes, and errors in creating process sheets and drilling machine errors may occur. It is extremely difficult due to 9. error in the drilling operation.

On the other hand, recently, in product development, after creating drawings, a model is created from scratch to confirm the image of the actual product before mass production begins. Normally, when creating a model, a wooden mold is made from the drawing, and based on that wooden pattern, six
For example, a first-order inversion type model is created using a method such as a first-order inversion type model, and then a second-order model is created by pouring, for example, a light alloy into the second-order inversion type model, and the secondary model is completed by making some modifications based on the image. Even if an exact model is completed, mass production is extremely difficult because the method of punching NC command tape from design drawings cannot process minute and complicated curved shapes. What is called a copying machine or an NC machine with a copying function has been developed in response to such demands.

The original copying machine has an advantage over the latter model in terms of low cost, but it is inferior in terms of processing accuracy and processing time because it processes while copying the model. On the other hand, the latter NC machine with a copying function has the drawbacks of being expensive, and being unable to perform NC machining while performing copying operation, and not being able to perform copying operation while performing NC machining.

Therefore, if there is something that can create only NC data that can be commanded directly from the model to the NC device, you can use that NC data to use a general-purpose NC machine.
It is possible to overcome the above-mentioned drawbacks.

[Object of the Invention] An object of the present invention is to provide an NC data creation device that can directly create NC data from three-dimensional coordinate data obtained by measuring the shape of a model. .

[Configuration of the Invention] Therefore, the configuration of the present invention is to provide a measurement mechanism that records the three-dimensional coordinates of each point of the model work, and to calculate the NC coordinate based on the positive dimensional coordinate data t determined by the 11111 measurement. The addition of the data processing device to create the data is considered a #+j feature.

[Embodiment] FIG. 1 shows the 4111 fixed mechanism of the NC data creation device of this embodiment. Quantity measurement a 1: A gate-shaped column 4 is placed on both sides of the upper surface of the table 2 on which the work is placed via guide rails 3 in the front-rear direction (Y-axis direction).
A slider 6 is provided on the 1' beam 4A via two wooden guide rails 5 so as to be movable in the left-right direction (X-axis direction), and a spindle 7 is provided on this slider 6 so as to be movable in the upper direction (Z-axis direction). ing. Here, at the lower end of the spindle 7,
Machining 1 used according to the part to be machined on the workpiece: A measuring element 8 having the same shape and shape as that part can be selectively attached.

+iF li and il between the horizontal heam 4A and the slider 6
, iFj table 2 and gate column 4 till
8 and between the slider 6 and the jjO spindle 7, as shown in FIG.
An X encoder 11, a Y encoder 12, and an X encoder 13 are provided to detect a drowsy signal. Xll1b of slider 6 detected by X encoder 11
Data D1. The Y car data DY of the portal column 4 detected by the Y encoder 12 and the Z car data D2 of the spindle lure detected by the Z encoder Ii are input to a data processing device 14 constituted by, for example, a microcomputer. ing.

The C arithmetic processing device 14 stores data in each encoder 11.1.
The data Dx, Dy, and Dz given from 2.13 are calculated based on the function word data input from the setting section 15, and output as NC data or three-dimensional coordinate data. The NC data created here is punched into a tape by a tape punch 16 and output as an NC command tape 17. In addition, the data processing unit 14 includes encoders 1, l2',
I NC from the data Dx, Dy, Dz given from 3
When calculating the data, perform 9. based on the accuracy set by the setting section 15. In addition to the function of performing
It is equipped with a function to process Modelo enlarged and reduced products by multiplying by Dx, Dy, and Dz.

In such a configuration, after the Jlll constantor 8 having a predetermined shape suitable for the machining conditions is attached to the spindle 7, it is moved in the horizontal direction and brought into quarter-dimensional contact with the surface of the workpiece. The data Dx, 'Dy, Dz of each axis at point 1 [+j where 8 is in contact with each en m -11
12 , l 3 +,=, and then provided to the take arithmetic processing unit 14 . Then, in the take calculation processing device 14, after the data Dz, Dy, Dz given from each encoder 11, 12, 13 is calculated based on the function word data set in advance in the setting section 15,
It is output as NCC del or three-dimensional coordinate data.

At this time, the NC data is calculated according to the precision, H'r, rate, and reduction rate set in advance by the setting section 15. The NC data output by this is used for tape punching 4j9.1.
6 +Thus, the tape is perforated and the NC command tape 17
is output as

Therefore, if this NC command tape 17 is sent to a general-purpose NC device, the command contents of the NC command tape 17 will be executed by the NC device, so that a product with the same shape as the model measured by the 71111 fixed mechanism can be processed. I can do it.

This means that a general-purpose NC machine is sufficient as the processing machine, so the equipment cost can be extremely reduced. Moreover, the creation of the NC command tape and the NC addition are performed separately.
This allows you to improve the machining efficiency of the NC machine. , an improvement in accuracy can be expected by changing the lJ cutting conditions. Normally, when the model is made of wood, the conventional copying process takes several steps, but depending on the weather conditions, the model may become deformed, and the finished product may be slightly distorted. In this respect, since the measurement time required by this device is several hours at most, it is not affected by weather conditions. Note that there are cases where a light alloy model is adopted due to weather conditions, and there is no need for this at all.

In addition, since the gate-shaped column 4 that supports the slider 6 is shaped like a gate, it is not supported on a cantilever like in the Leiara I machine, for example, so accuracy can be ensured. (2) There are no blind spots during measurement. There are advantages.

In the implementation, the NC data created by the data arithmetic processing device 14 is outputted as the NC command tape mentioned in the embodiment, and depending on the NC device used, for example, the NC data is outputted as a front tape etc. The information may be recorded on a magnetic disk, and the NC device may be operated using the magnetic disk as a medium.

Further, in the above embodiment, the guide rails 3 are arranged along both side edges of the upper surface of the table 2, or the guide rails 3 may be arranged as shown in FIG. 3, for example. In this device, notches 21 are formed on the 1i14 side edge of the table 2, auxiliary tables 22 are fitted and placed in each of the notches 21, and a guide rail 3 is integrally formed on the upper surface of this auxiliary table 22. It is something. In this way, the dimension between the guide rails 3 on both sides can be increased, so the E-J effect measurement range can be expanded.

Further, in the above embodiment, the gate-shaped column 4 is configured in a gate-shape,
Although the entire structure is configured to be movable with respect to the guide rail 3, it may be configured, for example, as in the 41st Δ. In this case, a support beam 31 is integrally fixed along both sides of the -I- plane of the table 2, a guide rail 3 is formed on the first side of the support beam 31, and a horizontal guide rail 3 is formed between the two guide rails 3. This is a configuration in which girders 32 are provided movably. This is particularly suitable when accuracy is to be maintained.

[Effects of the Invention] As described in Section 2 below, according to the present invention, it is possible to create NC data directly from the three-dimensional coordinate data created by the model shape Al1 constant at low cost, or by using an NC data creation device capable of Can you provide?

[Brief explanation of the drawing]

FIG. 1 is a fllllllllll button mechanism showing one embodiment of the present invention, and FIG. 2 is a block diagram showing its enclosure configuration. FIG. 3 is a perspective view showing a modified example of the table, and FIG. 4 is a perspective view showing a modified example of the column. ■...Measuring mechanism, 11...X encoder, 12...
・Y encoder, 13...2 encoder, 14...
Take calculation processing unit. Agent: Patent attorney Sanemasa Kinoshita (1 person) Figure 1 Figure 2 Figure 1゜

Claims (1)

[Claims] (1) Calculate the three-dimensional coordinates of each point on the model work Jll+
An NC data creation device whose #'F characteristic is that a data processing device is added to the measurement mechanism to create NC data based on the three-dimensional coordinate data determined by the measurement mechanism.