JPH0469134A - Workpiece transferring mechanism - Google Patents

Abstract

PURPOSE:To machine faces of a polyhedron from the same direction by means of a plurality of machine tools by changing the direction, in which the workpiece is attached, to the machine tool by means of the movement of a workpiece transferring pallet in work transferring process between machine tools. CONSTITUTION:In the first vertical machine too, a pallet 1 is horizontally clamped, and a main machining spindle 7 is lowered to the top 11 of a workpiece 2 and machines the first face. After that, the pallet 1 is moved by the displacement of a roller group, and is perpendicularly clamped and fixed by a clamp 9 and base 10. After that, the side face 12 of the workpiece 2 is machined by the main machining spindle end 70 of the second machine tool. In the next step, the workpiece 2 is indexed and rotated at 90 deg. together with the pallet to be machined at the third face. In the same way as mentioned above, the workpiece 2 is indexed and rotated to be machine at required faces, and a rail piece 40 is placed at a position with a rail 4 extended by being indexed and rotated to draw the pallet 1 from the second machine tool and is returned to the original position, and machining is repeated.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a workpiece conveyance mechanism in a metal processing machine tool, and can be suitably used when processing one workpiece on another side. be.

[Conventional technology]

In general, in a machining line where multi-face machining of a workpiece is performed using a metal processing machine tool, the workpiece is mounted in a direction perpendicular to the surface, and machining in a parallel direction is performed in the direction = (1) The workpiece is mounted with the surface horizontally. In this case, both a vertical processing machine and a horizontal processing machine are used.The vertical processing machine processes the upper surface of the workpiece, and then the horizontal processing machine performs four-sided processing using an indexing machine.

(2) The processing machine is equipped with a mechanism to switch the spindle angle, and after top surface machining or side surface machining, the angle of the spindle head is changed, or the angle is changed using a tool at the end of the spindle, and after the spindle machining angle is changed, side surface machining or top surface machining is performed. Perform processing.

(3) At the workpiece processing position of the processing machine, a jig for reversing the workpiece conveyance pallet is provided, that is, as shown in FIGS. 7A and 7B, the rotation axis X of the saddle is provided. -X.

Hold the pallet at 45° and the saddle at an X.

-X. Changing the pallet from a horizontal position to a vertical position by rotating 180° about its axis, or No. 8A.

After changing the support table from the horizontal state to the vertical state as shown in 8B and performing top surface processing or side surface processing, the work is reversed along with the workpiece transport pallet at the same position, and side surface processing or top surface processing is performed.

The processing means (1) to (3) above are used.

[Problem to be solved by the invention]

In the conventional method (1), both types of vertical and horizontal processing machines are prepared, and vertical and horizontal processing machines are used depending on the processing content. The arrangement of the side processing machines is fixed, and therefore, when changing the processing contents, the arrangement must be reconsidered and moved, which increases the work required when changing the processing contents.

In addition, with the conventional method (2), few general processing machines are equipped with a spindle switching mechanism itself, making it difficult to select a processing machine. Furthermore, when the spindle angle is changed using a spindle switching mechanism or a tool, the spindle structure becomes complicated and there is a risk that machining accuracy will be lowered. Further, it is difficult to provide such a spindle switching mechanism in a small processing machine.

In addition, with the conventional method (3), reversing the workpiece interferes with the workpiece conveyance line, and there is a limitation in the installation space for the reversing device of the processing machine itself. After the reversal, a further workpiece indexing operation is required, and when an indexing device is provided, the structure of the processing machine's jig etc. becomes complicated.

The present invention provides a workpiece transport mechanism that solves all of these conventional deficiencies at once.

[Means and effects for solving the problem] A processing line is constructed by connecting multiple metal processing machine tools with a workpiece transfer device, and processing is performed by moving a workpiece transfer pallet during the workpiece transfer process between the processing machines. The mounting direction of the workpiece to the machine is changed so that multiple processing machines can perform multi-face machining on one workpiece from the same direction.

Therefore, for example, by arranging a plurality of vertical processing machines and horizontal processing machines, it is possible to perform multi-face processing on one workpiece.

In addition, the pallet 10 guide rail 4.4 of the workpiece conveyance device
1 is spirally arranged between the processing machines to form a support piece 3 for the pallet 1.
By fitting the rail 4.41 into the rail 4.41, the pallet can be given a direction change as set by the rail, and an appropriate trajectory setting can be made to suit the specific configuration of a plurality of processing machines.

In addition, one rail 4 of the workpiece conveyance device is arranged in a straight line,
If only the support piece 3 on one side of the pallet 1 is slidably and rotatably fitted to the rail 4, there is no need to process the rail into a spiral shape, and the support of the work transfer device is simple and easy.

Further, if the workpiece conveyance device is provided with a rail piece 40 for fitting the support piece 3 of the workpiece conveyance pallet 1 on the processing machine to allow the pallet to perform index rotation, the workpiece conveyance pallet can be inserted into the processing machine. In addition to being able to perform accurate feeding and accurate indexing rotation, it is also possible to quickly feed and pull back the workpiece transport pallet.

〔Example〕

Example 1 (Figures 1 to 5D) As shown in Figures 1 and 2, struts 45 and 55 are erected from the base 6 of the transport section, and a rail with a circular cross section is fixed to the upper end of the strut 45. , a support 55 rotatably supports a group of rollers 55, and a cutout C provided on the 1 side of the lower surface of the pallet 1.
A guide support piece 3 having a lower end thereof is fitted to the rail, and the lower surface of the other side is placed on the roller 5, so that the pallet 1 is configured to be slidable in the front and rear direction along the rail 4 and swingable around the rail. The rail 4 was stretched in a straight line between two vertical processing machines (not shown), and the rollers 5 were configured to be sequentially inverted and displaced in the longitudinal direction of the rail.

FIG. 3 is a diagram showing a form in which the pallet is reversed by 90' due to the displacement of the roller group, and position P1 in FIG. 3 is the horizontal position of the pallet in FIG. 4A, that is, position PI in FIG. 4B. P, , P8 in Figure 3. p.

is the 4th Bl! I's P 2. The pallet was configured to occupy the vertical position shown in FIG. 4C with the rollers 5 at the P4 position, that is, the base 6 of the conveying section being vertical.

Figures 5A to 5D are side views of the rail, and Figures 5B, 5C, and 5D show the same position on the processing machine. In order to perform index rotation by the indexing device 8, a rail piece 40 is provided with a gap G between the rail 4 and the rail 4. Note that 9 is a pallet clamp, and 10 is a base that supports the pallet.

In this example, the pants) 1 are clamped in a horizontal state in the first vertical processing machine (not shown) (Figs. 4A and 5A).
After lowering the machining spindle 7 to the upper surface 11 (first surface) of the workpiece 2 and machining the first surface, the pallet 1 is moved to P, →P2→P
The installation direction is changed from 3 to P4 as the arrow A moves due to the displacement of the roller group, and the pallet is moved to the vertical position M (4th C,
5B), after fixing with the clamp 9 and base 10, the side surface 12 (second surface) is machined with the processing spindle end 70 of the second vertical processing machine, and then each pallet of workpieces is moved in the direction of arrow R as shown in Fig. 5C. Then, rotate the rail piece 40 by 90° to process the third side as shown in Fig. 5D, and then rotate the rail in the same manner to process the necessary side surfaces. The pants) 1 were pulled out from the second vertical processing machine, returned to the original position by moving in the direction of arrow A, and processed repeatedly.

Therefore, it is now possible to perform three-sided machining on the workpiece 1 using only two vertical machining machines.

Example 2 (Figure 6): As shown in Figure 6, there are guide support pieces on both sides of the bottom of the pallet.
．． 3, and both guide pieces are slidably fitted to a pair of rails 41, 41 which are turned in the longitudinal direction.
It was made the same as.

In the obtained workpiece transport mechanism, a pair of rails 41
, 41 is sequentially displaced as P, -P, →P, -P, and 90
The same effect as in Example 1 was obtained using the roof that rotates and reverses.

Others: In Example 1, it is also possible to provide the roller group on the underside of the pallet and guide the roller group with a rail erected from the conveyance base, and it is also possible to use an erected plate instead of the support 45. .

In addition, in Examples 1 and 2, the rail 4.41 is used as a guide support piece.
The pallet may be held between a pair of rollers, and in this case, the pallet can be moved smoothly.

〔Effect of the invention〕

Since the direction of the pallet can be changed by transferring it between processing machines, there is no need to install a complicated reversing mechanism on the processing machine to change the position of the surface when mounting the work to the processing machine, and the work reversal time is shortened. can also be omitted.

Further, since the processing machine does not require a workpiece reversing mechanism, the jig mechanism of the t1 processing machine itself becomes simple, and the installation of an indexing device for side surface processing of the workpiece becomes easy.

In addition, high-precision machining can be expected by using only general processing machines that are not equipped with complicated spindle mechanisms.

In addition, since multiple processing machines are used, either only vertical processing machines or only horizontal processing machines, the processing line configuration can be changed by changing only the jig when changing the processing content, and the processing machine can be selected at the same time. You can also choose from a wider range of models.

[Brief explanation of drawings]

FIG. 1 is a plan view of essential parts of the first embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is a perspective view illustrating the reversing operation. 4A to 4CIlfl are front views for explaining the reversing operation of the pallet, and FIG. 4A shows the horizontal position of the pallet.
Figure B shows each change process of the pallet, and Figure 4C shows the pallet when it turns 90''. Figures 5A to 5D are diagrams showing the processing flow of the first embodiment of the present invention, and Figure 5A shows the processing flow of the first embodiment of the present invention. Figure 5B shows machining with the pallet in a horizontal position, Figure 5C shows machining with the pallet in a vertical position, Figure 5C shows the pallet indexing and rotating state, and Figure 5D shows machining on the other side. 6 is a perspective view illustrating the reversing operation of the second embodiment of the present invention. FIGS. 7A and 7B are schematic side views showing the reversal of the pallet by rotating the saddle in the conventional example, and FIGS. 8th
FIG. B is a schematic side view of a conventional example in which a table is rotated to invert a pallet. 1...Pallet, 2...Work, 3...
・Guide support piece, 4・41...Renope 5...
・Roller, 6...Base of conveyance section, 7.7
0... Processing spindle end, 8... Indexing device, 9...
Clamp, 10...Base, 11...Workpiece top surface, 12...Workpiece side surface.

Claims (1)

[Claims] 1. A workpiece transfer device (D
) to form a processing line, and the mounting direction of the workpiece to the processing machine is changed by moving the workpiece transfer pallet during the workpiece transfer process between the processing machines, so that multiple processing machines can be connected from the same direction to one processing line. A workpiece transport mechanism on a processing line that allows multi-faceted processing of workpieces. 2. The guide rails (4, 41) of the pallet (1) of the workpiece conveyance device (D) are arranged in a spiral shape between multiple processing machines, and the support pieces (3) of the workpiece conveyance pallet (1) are connected to the rails. (4
, 41), the workpiece conveyance mechanism according to claim 1. 3. Arrange one rail (4) of the workpiece conveyance device (D) in a straight line, and attach the support piece (3) on one side of the workpiece conveyance pallet (1).
) is fitted to the rail (4) so as to be slidable in the movement direction and the rotation direction. 4. The workpiece conveyance device (D) is provided with a rail piece (40) for fitting the support piece (3) of the workpiece conveyance pallet (1) on the processing machine to index and rotate the pallet. The workpiece transport mechanism according to any one of claims 1 to 3.