JPS589726A - Spinning method - Google Patents

Abstract

PURPOSE:To improve dimensional accuracy of worked products in spinning a material by a mandrel and a finishing roll by detecting returning of metal of the material and correcting work locus of the finishing roll by the detected value. CONSTITUTION:A material 3 supported by a mandrel and a tail stock 4 rotated and formed by a finishing roll 2, and spinning worked. In this case, amount (a) of returning of metal is detected by a gap sensor 9 as amount of movement of a detection plate 8 attached to the tail stock 4. The detected value is inputted to a deciding-arithmetic device, and if the value exceeds a specified value, work locus of the finishing roll 2 is corrected to make clearance between the finishing roll 2 and mandrel 1 large, or to increase feed speed of the finishing roll 2, or to realize the above two simultaneously. This is then fed back to the roll driving device. Thus, the material 3 sticks fast to the mandrel 1 and a product of good dimensional accuracy is obtained.

Description

[Detailed description of the invention] a) Purpose of the present invention The present invention provides a spinning processing method tII that allows the material to adhere to the mandrel (gold 11) and easily produce products with good dimensional accuracy. Disadvantages of the conventional example' For example, as shown in Fig. 1, the material is pressed against the mandrel α) and formed into a shape.
De l! When surface finishing is performed by pressing the I mountain, the product material is pressed by the finishing roll () and becomes smooth, but at this time, the swell in the main axis direction of the mandrel (a) of #Kahata) is not shaped. This occurs on the thinner side of the material 13). Since the mandrel (1) generally has a large diameter on the side opposite to the tailstock, it does not collapse in this direction (rightward in Ill), that is, the material @) tends to extend toward the tailstock A). This phenomenon is said to be the origin of meat. When this meat buildup occurs, the resulting product becomes a defective product with large dimensional accuracy that does not adhere tightly to the metal part.

However, in the experiment conducted by the applicants, the length of tsP was 2 m.
As shown in , the amount of meat 04, etc. 11 shown on the vertical axis means that the smaller the gap between the finishing roll (2) and the mandrel (1), the slower the continuous feed of the finishing roll (2). On the other hand, with conventional spinning machines, it is very difficult to set the gap between 1, finishing μm (2) and mandrel (13) to a predetermined value, and even if it is possible to set it,
Due to the processing heat during processing, the diameter of the finishing roll 2 and mandrel (1) becomes thicker, and the finishing roll (roll) and mandrel opening (1) are set to be smoother and the grooves become slightly smaller than the 9th straight. As time went by, the meat tended to become more difficult to recover (ml).

The present invention aims to eliminate the above-mentioned drawback tIk. The following is the present invention tr
This will be explained using an IJ example.

tsl Honji @O configuration An embodiment of the present invention is shown in FIG. 3, lE4! ! The configuration for controlling the finishing roll position in the present invention shown in 1 is a roll motion device 6) (generally used two-axis NC table) and a meat return detection device 6).・It consists of a computing device (7).

The roll driving device t2) drives the finishing roll t2) along the given machining trajectory.

Meat return inspection #! 1 @ installation (6) is seen as a light, the detection 1 [18) jll is installed on the mandrel (1)
In other words, it is formed by arranging a magnetically utilized STT sensor (93) in response to
1 is anti-mass/dre/k (1) p is detected by the 11 mass sensor @) which is arranged so that the amount pushed through II corresponds to the detection plate etc.).

It is put out. As the clearance sensor υ), one that uses ultrasonic waves or lasers is used.

Judgment, calculation device) If the source or amount of wax detected is much greater than a predetermined value, the finishing roll is sent) and the mandrel C.
1) or finishing roll (2) so that the gap becomes larger.
In order to speed up the uniformity of feeding in the direction of the mandrel (1), the machining locus of the finishing roll (2) is corrected so that it is carried out at the same time, and fed back to the roll drive device.

141 Operational state of the present invention In the spinning processing method according to the present invention, while processing the material 13) with the finishing roll (4), the amount of meat returning due to OII pushes down the tail stock (4), and therefore the tail stock (4) is ) is constantly detected by the clearance sensor (9), and the movement is judged and inputted to the arithmetic unit (21). In order to increase the gap between the finishing roll (21) and the mandrel α), the machining trajectory of the finishing roll (21) is corrected so that the feed speed of the finishing roll (21) is increased, or both of them are fed at the same time. Accordingly, the roll body IIk device 6) is driven.

In the above embodiments, the present invention is described with respect to finishing processing, but it can be similarly applied to general spinning shearing processing as shown in FIG. 85.

As described above, in the present invention, the amount of meat rebound that occurs during spinning processing is detected, the amount of meat rebound is determined, and inputted into the calculation device. 5, or increase the 0-feed speed of the processing roll in the mandrel direction, or modify the processing trajectory of the processing roll so that both of these cannot be achieved at the same time, and feed this back to the roll drive device. Because the material is made of solid wood, the material adheres closely to the mandrel, making it possible to easily and reliably manufacture products with high dimensional accuracy.

4 tmrtnom single eaq jll-Figure is a schematic vrrm diagram showing a conventional example, Figure 2 is a graph explaining the present invention, Figures 3 and 84 are diagrams showing an embodiment of the present invention, and Figure 3 is a schematic diagram. Cross-sectional view, No. 411 is a block diagram, [Figure 15 is a schematic cross-sectional view showing a different embodiment of the present invention.

Utility model applicant Matsushita Electric Works Co., Ltd. Daishioiri Benz Consultant Toshimaru Takemoto (2 others)

Claims (1)

[Claims] Clamp) Material tt Mandrel Clamped on tail stock lI@
A spinning processing method in which raw meat is processed using a processing roll while being compressed, the distance between the processing roll and the mandrel and the feeding of the processing roll in the direction of the mandrel are adjusted in response to fluctuations in the amount of meat returning. A spinning processing method characterized by controlling speed and processing.