JPS59193724A - Spinning device - Google Patents

Abstract

PURPOSE:To perform continuously desired forming without interrupting the stage by attaching independently plural rollers having different shapes to a tool rest, and disposing the rollers in a way as not to interfere with the respective parts of the device and a blank material during working. CONSTITUTION:A mandrel 2 to serve as a matrix is fixed to a driving spindle 1, and a discoid blank material 4 is grasped and supported by a press plate 3 at the top end of a tailstock. A carriage 6 on a swivel bed 5 inclined relatively with the spindle 1 and a tool rest 7 are traced and moved to eliminate the interference between rollers 14, 15... and the respective parts of the device or the material 4. The material 4 is drawn by the roller 14 having a curvature R to form a primary finished article 4a and thereafter the part l3 is worked by the roller 15 having the radius approximately equal to the radius (r) at the corner of the product 4c to form a secondary finished article 2b; further the part l1 is upset by the roller 16 to press the part l2 and the product 4c is obtd. The spinning is efficiently accomplished by the continuous stage without interrupting the stages.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a spinning processing device, which allows processing to be performed in one step using a plurality of rollers.

In spinning processing, a tool is pressed against a disc or cylindrical material that rotates together with the matrix, and the tool is moved along the matrix to rotate the material into a conical, cylindrical, etc. shape that corresponds to the shape of the matrix. It is a type of rotational molding method that molds the body.

As shown in Fig. 1, the general structure of the spinning processing device used for this spinning processing is as follows. While a disk-shaped material 4 is supported under pressure via a presser plate 3, a swivel bed 5 is provided inclined at an appropriate angle with respect to the axial direction of the main shaft l. Carriage 6 that can be moved in the direction
is mounted, and a tool stand 7 is provided on the key knowledge 6, which is movable in a direction perpendicular to the moving direction of the carriage 6.
It is now possible to move by following the template of the copying device.
It's on. A roller 8 is rotatably attached to this tool stand 7. This roller 8 is pressed against the material 4, and the mandrel 2 is moved by the swivel bed 5 and carriage 6.
to a predetermined position and perform molding.

When performing spinning using a single 0-roller 8 with such spinning processing equipment, it is often necessary to use rollers with different shapes and dimensions during processing, and when it is necessary to replace the rollers during forming. However, it is difficult to replace the Japanese-La 8, and a suitable automatic replacement device has not yet been put into practical use.
Machining is performed relying on the rollers 8.

In addition, if multiple p-ra are absolutely necessary for molding,
If the machining process is performed in separate steps or an independent attachment 9 is provided separately from the tool stand 7 to attach the AK roller 1O, there are drawbacks such as interruption of the machining process, complication of the equipment, and increased cost.

Therefore, as shown in FIGS. 2 and 3, the roller support shaft 11 of the tool holder attached to the tool stand 7 is made to protrude from both ends of the tool holder, and the curvature and outer diameter are An apparatus has been proposed in which different rollers 12 and 13 are rotatably mounted, and the two rollers 12 and 13 are selectively used depending on the type of processing.

However, in a device that uses two rollers 12 and 13 gold, for example, if the mounting angle of the roller support shaft 11 is set to β with respect to the axial direction of the main shaft 1, the length Ll of the machined portion will be as shown in Fig. 3. As shown, if L2 is too long, interference will occur between the roller support shaft 11 and the product or between the roller 13 and the presser plate 3 during processing, which limits the use of the rollers 12 and 13. and n are two rows 212.
13 have the same mounting angle β.

It is an object of the present invention to eliminate such conventional drawbacks and to provide a spinning processing device that can be equipped with a plurality of rollers necessary for processing, does not require interrupting the process, and does not cause interference with other devices. In order to achieve this object, the present invention has a structure in which a roller rotatably attached to a tool stand is pressed against a material that rotates together with a matrix, and the rollers are moved along the matrix. 1J A spinning processing device for forming the material into a shape corresponding to the matrix, when a plurality of rollers having different shapes are provided independently on the tool stand, and all of these rollers are sequentially pressed against the material. It is characterized by being arranged so as not to interfere with each part and the moon.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

FIG. 4 is a schematic configuration diagram of an embodiment of the spinning processing apparatus of the present invention, in which the same parts as in the conventional apparatus are denoted by the same numbers.

A mandrel 2 serving as a mother mold is fixed coaxially to a main shaft 1 which is rotatably supported.
is supported under pressure.

On the other hand, on the tool side, a swivel bed 5 is provided inclined at an appropriate angle with respect to the axial direction of the main shaft l, and a carriage 6 movable in the longitudinal direction is mounted on the swivel bed 5. A tool stand 7 is provided on the carriage 6 and is movable in a direction perpendicular to the moving direction of the carriage 6, so that it can be moved by a copying device. A plurality of (three in the illustrated example) rollers 14, 15, and 16 having different shapes are attached to the tool stand 7 so as to be rotatable independently of each other. The direction and position of the rotation axis of 15.16 are set so as not to interfere with each part of the device or the material 4 etc. during processing of each roller 15, 16.
I'll tell you.

Processing using the spinning processing device configured as above is as follows.
First, the roller 1 has a shape with a relatively large radius of curvature R.
4, the material 4 is completely squeezed and processed into the primary processed product 4a shown below the center in FIG. After this, use a roller 15 with a smaller roundness to make sure that the radius of curvature of the tip is equal to the radius r of the corner of the product (shown above the center in Figure 4) 4C, as shown in Figure 5. Process part 4 to 2
A next processed product 4b is obtained. Finally, as shown in FIG. 6, use the specially shaped roller 16 for squeezing and spinning to squeeze the 20 parts. Stretch it to the length of to obtain product 4C and finish the processing.

In this way, the three rollers 14, 1 are attached to the tool stand 7.
5.16i is used for all spinning processing, but there is no need to separate the processing into three processing steps while replacing all the rollers, and there is no need to prepare a new attachment, as in the conventional method. Further, the molding operation can be performed without interrupting these three steps, making it a continuous process.

FIG. 7 shows the locus of movement of the roller 14 during continuous machining, and the roller 14 is the starting point.
Starting from , the drawing and binning is performed between ■ and ■ to reach the state shown in Figure 4, and then the roller 15 begins to come into contact with the primary processed product 48 when it moves from ■ to ■ and reaches the point. .

When the roller 14 further advances between ■ and ■, the roller 15 moves to the fifth position.
The position shown in the figure is reached and the corner forming is completed. Thereafter, the roller 14 continues to return to the starting point ■ through [phase] and ■, but while passing between [phase] and ■, the roller 16 moves to the starting point (22) as shown in FIG. Straining and spinning is performed. Therefore, FIG. 4 shows the state when the roller 14 is at the position (■).

Thus, by moving the roller 14 along the paths ■ to ■ shown in FIG. 7, the processing shown in FIGS. The sagging rollers 14, 15 and 16 that are not in use do not interfere with the material 4, the processed products 4a and 4b, or any part of the apparatus.

Furthermore, compared to the prior art in which all the rollers are attached to both ends of one roller support shaft as shown in FIGS.
Since the rollers 15 and 16 are independently attached to the tool stand 7, there is a degree of freedom in the attachment position, and interference between the rollers and various parts can be easily avoided. That is, it is not necessary to increase the diameter of the roller or to lengthen the roller support shaft, and it is possible to mount the roller in a highly rigid state, which provides excellent effects.

Incidentally, in the above embodiment, the explanation of the feeding drive of each roller is omitted (tn7) (but, for example, as shown in FIG. 7).

Automation is also possible if it is controlled by a tracing mechanism along the path.

Furthermore, the number of rollers is not limited to three.

As described above in detail with the embodiments, according to the present invention, a plurality of rollers necessary for machining are arranged independently and at appropriate positions on the tool stand in advance, so that the rollers can be sequentially moved. Spinning processing can be performed continuously in one process while using the machine. Therefore, as before,
There is no inconvenience such as replacing rollers for each process, and processing work can be carried out efficiently and equipment costs are low.

[Brief explanation of drawings]

1 to 3 are schematic configuration diagrams of a conventional spinning processing device, and FIGS. 4 to 7 show an embodiment of the spinning processing device of the present invention, and FIG. 4 is a schematic configuration diagram. , FIG. 5 and FIG. 6 are explanatory diagrams of the machining process, and FIG. 7 is an explanatory diagram of the locus of the roller in the continuous process. In the drawing, l is the main shaft, 2 is the mandrel, 3 is the presser plate, 4 is the material, 5 is the swivel rod, 6 is the carriage, 7 is the tool stand, and 14, 15, and 16 are the rollers. Patent applicant: Mitsubishi Heavy Industries, Ltd. Patent attorney Shibe Mitsuishi (1 person) Figure 1 Figure 2 Figure 3 Figure 4 F Figure 5 Figure 6

Claims (1)

[Claims] A roller rotatably mounted on a tool stand is pressed against the material rotating together with the mother mold, and the roller is moved along the mother mold to form the material into a shape corresponding to the mother mold. In the spinning processing device, a plurality of rollers having different shapes are arranged independently on the tool stand, and
A spinning processing device characterized in that the rollers are arranged so as not to interfere with each part of the device and the material when the rollers are sequentially pressed against the material.