JPH0232361Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (a) Industrial Application Field The present invention relates to a fixed-position rotating ATC device in machining centers and drilling centers.

b Conventional technology Conventionally, in inexpensive machining centers and drilling centers equipped with a small number of tools, the tool magazine (a member that removably stores a large number of tools) for the ATC (automatic tool changer) is placed on a table. It is erected so that it can move forward and backward, and is moved forward and backward by the operation of an air cylinder to exchange tools.

c Problems to be solved by the invention In order to move the ATC device forward and backward on the table, the size of the table must take into account the movement stroke of the tool magazine and the installation space of the air cylinder, and therefore the overall size of the machine tool is The installation space has to be large. Additionally, it is necessary to cover the area within the movement stroke range of the ATC device to ensure safety.

Structure of the invention a Means for solving the problem A tool magazine is rotatably installed upright at a fixed position on a chip holder that moves together with the table installed on the side of the table on which the workpiece is placed. X
The tool is characterized in that the tool is replaced by combining movement in the axial direction and Y-axis direction and movement of the main shaft in the Z-axis direction.

b. Functions and Embodiments The embodiments of the present invention will be explained with reference to the drawings together with their functions. As shown in FIGS. A box-shaped casing 3 is erected at a predetermined position, an opening 4 is provided in the upper plate 3', and a short cylindrical joined body 5 with a flange is formed.
and screw the flange to the upper plate 3'. The lower end of the cylindrical support 6 is fitted and welded to the cylindrical portion of the joined body 6, and the shaft 7 is rotatably inserted into the support 6 via a bearing 8. The lower end of the shaft 7 is connected to the bearing 9. Loosely insert it into the joint body 5 through. The lower end of the shaft 7 is made to protrude into the casing 3, and the pinion gear 10 is wedged to the protruding end. An air cylinder 11 is provided in the casing 3, and a rack 1 is attached to the piston rod 12 in a U-shape.
3 are integrally fixed and meshed with the pinion gear 10, so that the shaft 7 is reversed by the movement of the piston rod 12 back and forth. A through hole 15 provided near the upper side of a magazine base 14 made of a substantially trapezoidal plate is loosely fitted into the upper end of the shaft 7, and a flange 16 is fitted into the through hole 15, and the flange 16 is inserted into the upper end of the shaft 7. and fix it with the power lock 17, and then attach the magazine base 14 and flange 1.
Screw on 6. The magazine base 1 includes a plurality of tool holders 19 each having a leaf spring 18 with its tip wound around it fixed to the side end surface and having a semicircular arc cutout on the tool receiving side.
The tool holder 19 is screwed onto the lower end of the magazine base 14 and rotated to rotate the tool holder 19 toward the main shaft 20 side. In the figure, 21 is the spindle head;
2 is a bed, 23 is a saddle for moving the table 1 in the X-axis direction, 24 is a saddle for moving the table 1 in the Y-axis direction, 25 is a column, 26 is a tool,
Reference numeral 27 is a drawing bar provided in the spindle head 21 so as to be movable up and down.The tool 26 is removably clamped by a drawing bar 27, and a desired tool 26 is replaced and attached to the spindle 20.

The operation of the ATC device according to the present invention is as shown in Figs. 4 to 13.
The Z-axis of the spindle that has been ramped up at 6 returns to its origin (FIG. 4), and then the magazine base 14 rotates 180 degrees and the tool holder 19 faces the spindle. (Figure 5)
Next, the table 1 moves in the Y-axis direction, and the main spindle 26 is positioned at the position of the empty tool holder 19 (Fig. 6).The Z-axis of the main spindle is then lowered by 110 mm (Fig. 7). By moving in the X-axis direction and returning to the origin, the tool 26 clamped to the main shaft is moved to the tool holder 1 of the magazine base 14.
Cheered on by 9. (Fig. 8) After chucking, the drawing bar 27 inside the spindle head 21
The clamp on the tool 26 is released (9th
Figure) The Z-axis of the spindle head 21 rises and the tool 26
detach from the main shaft. (Fig. 10) Next, table 1 moves in the Y-axis direction, and the specified tool 2
6 and the main shaft are positioned facing each other (Fig. 11), and then the Z axis of the main shaft is lowered, and the drawing bar 27
clamps the tool 26. (FIG. 12) After clamping, the table 1 moves 200 mm from the origin in the X-axis direction to remove the designated tool 26 from the tool holder 19 of the magazine base 14. (13th
Figure) When the tool exchange is completed, the magazine base 14
is flipped to the normal position. Incidentally, the ATC device of the present invention may of course be installed upright on the table 1 itself.

Effects of the invention As described above, the present invention installs the ATC device on the table 1 itself or at a predetermined position on the chip holder 2 on the side of the table 1 so as to be able to rotate freely, and rotates the ATC device to the spindle side only when changing tools. , after the tool is replaced, the tool magazine returns to its normal position, so that the movement stroke of the tool magazine remains within the rotation range of the magazine base 14, and the air cylinder 11 performs the reversal operation.
Even when considering the installation space, it can be accommodated in a very small space, and the table and machine tool itself can be designed compactly, which has the advantage of reducing the installation space of the machine. In addition, safety can be ensured by covering only within the rotation range of the magazine base 14, and there is no need for extensive covering, and in addition, there is no need for wasted space such as the installation space for the air cylinder that moves the ATC device forward and backward like in conventional machines. Since this does not occur, the floor area of the factory can be used effectively, and the distance between each installed machine can be made as close as possible, so the distance to move to an adjacent machine can be shortened and work efficiency can be improved. Furthermore, since the machine itself can be designed compactly, packaging and transportation costs can be reduced.

As described above, the present invention has a robust structure, is free from failure, is easy to manufacture, and has excellent practical value.

[Brief explanation of the drawing]

Figure 1 is a front view showing the implementation state of the present invention;
3 is a longitudinal sectional view of the same, and FIGS. 4 to 13 are explanatory diagrams showing the operation steps of the ATC device according to the present invention. 1... table, 2... chip holder, 7... shaft, 10... pinion gear, 11... air cylinder, 13... rack, 14... magazine base, 19... tool holder.

Claims (1)

[Scope of utility model registration request] In a machining center or a drilling center in which a drawing bar 27 for attaching and detaching a tool 26 is provided in a spindle head 21 to which a spindle 20 is attached, the drawing bar 27 is interlocked with a drive device to move the drawing bar 27 to a fixed position on the table 1 or the chip holder 2 on the side of the table. A shaft 7 is rotatably installed, one end of a magazine base 14 constituting a tool magazine is fixed to the upper part of the shaft 7, and an arc-shaped recess is provided at the other end of the magazine base 14. A fixed position rotation type ATC device for machining centers and drilling centers, which is provided with a large number of tool holders 19 each consisting of a leaf spring 18 projecting from both ends of the recess.