JPS6228369Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an auxiliary plate for measuring a test pallet used for measuring centering between spindles of each machine tool in a line machine.

In order to process workpieces that require multiple processing steps, a transfer machine consists of a series of processing machines, a conveyor device for moving the workpieces between the processing steps, and other accessory equipment. In the process of transporting a workpiece, a station that stops regularly performs processes such as drilling, tapping, boring, and milling. One of these conventional stations
As shown in the figure. A base 2 is slidably placed on the bed 1, and a spindle head 3 is placed on the upper surface of the base 2.

A plurality of spindles 4a, 4b, and 4c are rotatably supported by the spindle head 3, and tools 5a, 5b, and 5c are inserted into these spindles, respectively. In this way, for example, a multi-spindle type drilling station is constructed, and the tools 5a, 5b, 5c are drill bits. A test pallet 10 is placed on a bed 6 connected to the bed 1 so as to be slidable in a direction perpendicular to the sliding direction of the base 2. Such a multi-spindle type or multi-spindle drilling machine has one spindle head 3 with a large number of drill shafts 5a, 5b,
5c, and is a special machine that can drill many holes at the same time.

A test pallet 10 as shown in FIG. 2 is used to measure the centering between the multi-axis spindles of each station of this dedicated machine, that is, between the tools 5a, 5b, and 5c in FIG. This test palette 1
Holes O and P, for example, used for reference positioning are formed in the hole 0 at the correct position corresponding to the hole to be machined in the workpiece W (FIG. 2).

As shown in Fig. 2, the main shaft 4c of each station
Attach a dial gauge 11, which is a measuring tool, and rotate it gently as shown in the figure, and check the deflection of the pointer of the dial gauge 11 with respect to the reference hole O of the test pallet 10 to determine the position of the main shaft 4c. Main shafts 4a, 4b corresponding to other reference holes a, b, c, d...
By measuring ..., we looked at the measurement results between each spindle and performed centering work for each spindle.

However, in such a conventional test pallet 10, there is no problem because the individual holes machined between each station exist independently. That is, if the centers of the holes on the test pallet 10 are close to each other as shown in FIG. There is no problem between holes a, b, and c, but if the small holes of reference holes e and d are close to each other, the hole must be made a certain size to measure with the dial gauge 11. . However, if the holes are made larger, the holes will interfere with each other and a cut circumference will be formed. Therefore, when centering and positioning the spindles 4a, 4b, and 4c using the test pallet 10 in such a state, there will be a portion where the contact of the dial gauge 11 cannot come into contact with the inner peripheral surface of the reference hole e or d. There was a problem that accurate centering positioning or measurement of the spindles 4a, 4b, and 4c could not be performed.

The present invention was proposed in view of the above circumstances, and its purpose is to accurately determine the centering device for each spindle even if the positions of the spindles arranged at each station of the line machine overlap on the workpiece. The object of the present invention is to provide a spindle centering device for a line machine that can perform the following operations.

As a means for that purpose, this device is sequentially conveyed to each station of a line machine and is used to perform machining by relative movement between the workpiece and the tool inserted into the spindle head. A measuring tool inserted in place of the workpiece, a first jig which is attached to each station in turn in place of the workpiece and has a reference hole for centering the spindle at a position corresponding to the spindle, and a specific When the first jig is sent to the station, the first jig has a reference hole for main spindle centering located at a position overlapping with the reference hole of the first jig, and is connected with a pin to the reference hole of the first jig. It consisted of two jigs.

Therefore, when the positions of the spindles placed on the station overlap on the workpiece, the second jig is attached to the first jig.
It became possible to center the spindle in the subsequent process by attaching a jig and measuring with the second reference hole based on the first jig.

This invention will be explained below based on the drawings. Fourth
FIG. 5, FIG. 6, and FIG. 8 are diagrams showing an embodiment of this invention. In FIGS. 4, 5, and 6, reference numeral 12 is a first measuring jig according to the present invention, which is a test pallet. This first jig 1
2 is erected on a predetermined reference plate 13. Further, reference holes a, b, c, and e are formed in this first jig 12, and two dowel pins 14a and 14b as reference positioning means are protruded from the end surface at a distance. There is. Reference numeral 15 designates a small second measuring jig that is closely attached to the first jig 12, and this second jig 15 has the knock pins 14a, 14.
Through holes 16a and 16b are formed, respectively, through which the holes 16a and 16b are inserted. The auxiliary jig plate 15 is detachable from the first jig 12, and is so close to the second jig 15 that its radius partially overlaps with the reference hole e of the main jig plate 12. A reference hole d is formed. These first jig 12 and second jig 15 constitute a jig plate 17 as a whole.

Next, the effect will be explained. It is assumed that a plurality of spindles 4a, 4b, 4c, etc. are installed in the multi-spindle type spindle head 3. First, for example, the main shafts 4a, 4
b and 4c are respectively positioned in the conventional manner. Next, the second jig 15 is attached to the first jig 12 via the dowel pins 14a, 14b so as to be in close contact with the first jig 12 (FIGS. 4, 5, and 6). is brought into contact with the inner peripheral surface of the reference hole d of the jig 15, and the deflection of the pointer of the dial gauge 11 is continued to correct the position of the corresponding main shaft.
Therefore, since the dial gauge 11 continuously contacts the reference hole e and the reference hole d, accurate positioning of the main shaft becomes possible. A tool is inserted into each spindle that has been accurately positioned in this manner so that the workpiece W can be precisely machined. Furthermore, the jig plate 18 in FIG. 7n has reference holes h, i, and j.
However, due to the model change of the workpiece, etc., the reference hole k as shown in Fig. 7 n and
In the conventional case, when you want to add
8 must be processed to process the jig plate 18a. On the other hand, according to this invention, as shown in FIG. 8, by attaching the second jig 15 in which the reference hole k is formed to the first jig 12, the measurement can be carried out freely. Although simple drilling has been described, the effect of the second jig is extremely significant in the case of similar complex machining. As explained above, according to this invention, by detachably attaching the second jig having a reference hole to the first jig, it is possible to accurately and easily measure the centering of overlapping holes. As a result, centering of the spindle can now be done accurately and easily. Furthermore, it is possible to not only easily perform similar processing, but also to freely perform similar experimental processing. Along with the conversion of transfer machines to FMS,
Although setup changes are required at the same time as workpiece changes in medium-sized, medium-volume production, it is also effective for measuring the centering of the spindle when a part of the workpiece is changed.

In addition, a single unit other than the above-mentioned transfer machine
In NC machine tools, it is also possible to check the program by measuring the position of the spindle.

[Brief explanation of the drawing]

Fig. 1 is a side view showing one of the stations of the transfer machine, Fig. 2 is a perspective view for explaining centering of the main shaft, Fig. 3 is a front view of a conventional jig plate, and Fig. 4 is a front view of a conventional jig plate. The figure is a front view of the jig plate according to the present invention, FIG. 5 is a sectional view taken along the line V-V in FIG. 4, and FIG. 6 is an overall perspective view of the jig plate according to the present invention. FIG. 7 is a front view of conventional jig plates similar to each other, and FIG. 8 is a front view of a jig plate of the present invention for similar processing. 1...Bed, 2...Column, 3...Spindle head,
4c, 4b, 4c...main shaft, 5a, 5b, 5c...
...Tool, 6...Bed, W...Work, 11...
Dial gauge, 12, 12a...first jig,
14a, 14b... Knock pin, 15... Second jig, a, b, c, d, e... Reference hole, 17...
Jig board.

Claims (1)

[Scope of utility model registration request] A measuring tool inserted in place of the tool in the spindle head in a machine tool that performs processing by relative movement between a workpiece that is sequentially transported to each station of a line machine and a tool inserted in the spindle of the spindle head, a first jig that is sequentially attached to each station instead of the workpiece and has a reference hole formed at a position corresponding to the spindle for centering the spindle; and the first jig is sent to a specific station. The second jig has a reference hole for centering the spindle and is connected to the reference hole of the first jig with a pin, and the second jig has a reference hole for centering the spindle that is located at a position where it overlaps with the reference hole of the first jig. If the positions of the arranged spindles overlap on the workpiece, the first
A spindle centering device for a line machine, characterized in that a second jig is attached to the jig, and a spindle in a subsequent process is centered using a second reference hole based on the first jig.