JPH03161210A - Opening point working device for pipe material and the like - Google Patents

Abstract

PURPOSE:To make the diameter of a copy member alterable, so as to improve the workability of the work of opening point by providing a pressing member on the edge of a cutter in such a way that its center is identical with the rotating center of the cutter, and by providing the copy ring that is larger than the diameter of the pressing member, at the abutting part on the outer periphery of the pressing member. CONSTITUTION:A pressing member A is pressed to the outer peripheral surface of a work W through a copy ring 13, and the positioning relationship between the contact part of the work W and the center of the rotating shaft of a spindle 1 is in a normal direction any part of the circumferential surface of the work, whereby equal cutting is possible even on a straight line in the periphery, or on curved parts in four corners. Conical plates 4, 6 approach one another due to the movement of the conical plate 6 by an adjusting nut 9, and an effective diameter of an abutting part (s) becomes larger thereby, while the conical plates 4, 6 are separated with one another, and the effective diameter of the abutting part (s) becomes smaller thereby. When an outer diameter of the abutting part (s) is larger, the interval between the pressing member and the circumferential surface of the work W through the copy ring 13 becomes larger, whereby the size of the notch made by a cutter 2 is reduced. When the outer diameter is smaller, the size of the notch can be made larger.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a processing device that performs beveling along the outer circumference of a workpiece such as a pipe material or a column material.

(Prior art) When welding various structural materials such as pipe materials, a bevel is formed on the outer periphery of the end face as shown in Figure 4. In the figure, f is the groove surface, R is the root face, θ is the groove angle, and t is the thickness of the work W.

A fifth processing device is used to perform this groove processing.
The one shown in the figure is known. In the figure, 1' is a spindle 2' is a cutter provided on the spindle 1'. The cutter 2' has a conical cutting edge P'. 3' is a support shaft having the same rotation axis as the spindle 1';4' is a copying roller provided on the support shaft 3' at the tip of the cutter 2'.

In this conventional device, the axis of rotation of the cutter 2' and the axis of rotation of the copying roller 4' are the same. Therefore, when beveling is performed along the outer circumference of a square pipe material as shown in Fig. 6, the cutting condition at the straight side part a and the rounded part b at the four corners does not change, so the cutting is uniform in each part. Processing (bevel processing) can be performed. By the way, the groove shape to be obtained by the above-mentioned cutting process varies depending on the wall thickness of the pipe, etc.
In this case, the conventional apparatus deals with this by adjusting the relative position of the cutter 2' and the workpiece W in the direction of the arrow X in FIG.

Furthermore, as a conventional processing device, one shown in FIG. 7 is known. This device cuts the dimensions of the workpiece W and simultaneously creates a bevel on the cutting edge.The cutter has a cutting blade 21' in the center, and beveling cutters 22', 23 on both sides. ' are provided by integrally combining them.

In this case, if the relative position of the workpiece W and the cutter is adjusted in the direction of the There is no other way than to select and replace the copying roller 4' and set the cutting depth of the cutters 22' and 23'. (Problem to be Solved by the Invention) As described above, in order to handle machining of different groove shapes with the latter machining device, the copying roller must be replaced each time, which increases the troublesome operation and work. This resulted in disadvantages such as decreased efficiency. In addition, the former processing device requires adjustment means in the direction of the X arrow on the cutting means side or the workpiece holding means side, which has the problem of making the device more complicated and larger. The present invention has been made by focusing on the above-mentioned problems of the prior art, and provides a beveling device that can simplify the configuration by making the tracing member variable diameter, and has excellent operability and workability. is intended to provide.

(Means for Solving the Problems) In order to achieve the above object, the beveling device for vibrator materials and the like according to the present invention has an oval shape as follows. That is, the gist of the present invention is to provide a processing machine in which a copying member is attached to the tip of a cutter and cutting is performed while the copying member is aligned along the outer circumferential surface of the workpiece. A pressing member whose abutting portion can be adjusted in the diametrical direction and whose center coincides with the center of rotation of the forceter is provided, and a tracing ring larger than the diameter of the abutting portion is provided on the outer periphery of the pressing member. It is in.

(Function) When the outer shape of the outer periphery abutting part of the pressing member is adjusted to a larger dimension in the diametrical direction, the separation distance between the workpiece that comes into contact via the copying ring on the outer periphery of this abutting part and the center of the force/y force will be reduced. growing. Therefore, in this case, the size of the cutter's cut into the workpiece will be smaller. Also, in contrast to the above, if the outer shape of the contact part is adjusted to a smaller dimension, the distance between the workpiece and the center of the cutter will become smaller, and the size of the cut into the workpiece by the cutter will become larger. The center of the outer periphery abutting part of the above pressing member is the same as the rotation axis of the cutter, and the copying ring is made larger than the outer periphery of the abutting part, so the outer periphery of the workpiece and the center of the abutting part during copying operation are The positional relationship is always in the normal direction and does not change. Therefore, uniform cutting can be performed on each part of the workpiece.

(Example) Hereinafter, one example of the beveling apparatus for pipe materials and the like according to the present invention will be described.

Figure 1 is a longitudinal side view. Figure 2 is a sectional view taken along the Y-Y line shown in Figure 1. 1 is a spindle, 2 is a cutter for bevelling, and 3 is a support shaft provided at the tip of spindle 1. The rotation axes of the support shaft 3 and the spindle 1 are the same, and the following pressing member A is provided on the support shaft 3.

That is, 4 is one conical plate fixed to the support shaft 3, and 5 is a slide guide shaft protruding from this one conical plate 4.
6 is the other conical plate in which the boss portion 7 is slidably fitted to the slide guide shaft 5. Shape the abutment part S into a ray shape. The abutting portion S on the outer circumferential surface increases the effective diameter when the pair of conical plates 4 and 6 approach each other, and decreases the effective diameter when they separate.

Reference numeral 8 indicates a screw shaft provided on the slide guide shaft 5 so as to penetrate the boss portion 7 and protrude outward. Reference numeral 9 indicates an adjustment nut screwed onto the screw shaft 8. Reference numeral 10 indicates a direction in which the pair of conical plates 4 and 6 are separated from each other. A compression spring 11 is biased to a key groove 11 provided in the slide guide shaft 5. A detent pin 12 has a distal end fitted into the key groove 11.

Next, l3 is a copying ring having a convex portion 14 on its inner peripheral surface that fits into the abutting portion S. The copying ring 13 has an elliptical shape in the shape of a ball bearing, and the above-mentioned copying ring 13 is provided on the inner circumferential surface of the copying ring 13. A convex portion 14 is provided, and a tracing surface 15 that joins to the outer peripheral surface of the workpiece W is provided on the outer ring side. Further, the diameter of the convex portion 14 is set larger than the maximum effective diameter of the abutment portion S described above.

The ellipses of the pipe material beveling apparatus according to one embodiment are as described above, and the cutter 2 and the pressing member A are attached to the spindle 1 and the support shaft 3 on the same rotation axis. Since the pressing member A is pressed against the outer circumferential surface of the workpiece W via the tracing ring 13 having a larger outer diameter, the positional relationship between the contact position of the workpiece W and the rotational axis of the spindle 1 is as follows. It is the normal direction at any position on the circumferential surface of the workpiece and does not always change. Therefore, even when copying the straight parts of the sides or the rounded parts of the four corners, uniform cutting can be performed. Also, adjust nut 9
When the other conical plate 6 is moved to the right in FIG. 1, the distance between the pair of conical plates 4 and 6 becomes closer, and the effective diameter of the contact portion S becomes larger. Also, when the pair of conical plates 4 and 6 are separated by operating in the opposite direction to the above, the contact portion S
effective diameter becomes smaller.

If the outer diameter of the contact portion S is large, the distance from the circumferential surface of the workpiece W via the copying ring 13 becomes large, so that the cut size of the cutter 2 can be set small.

Furthermore, if the outer diameter of the contact portion S is small, the distance from the workpiece W will be small, so the cut size of the cutter 2 can be set large. Therefore, by variably adjusting the outer circumferential diameter of the contact portion S, root face amounts of various dimensions can be obtained accurately.

Furthermore, FIG. 3 shows an embodiment of a processing device in which the spindle 1 and the pressing member A are separated.

In the drawings, members that are the same or equivalent to those of the above-mentioned embodiment are indicated by the same reference numerals, and redundant explanations will be omitted. That is, 20 is a bearing tube that supports the spindle 1; 21 is a mounting stay that is fixed to the bearing tube 20 and protrudes forward; and 22 is a slide guide tube that is provided at the tip of the mounting stay 2l. This slide guide tube 22 has one side. A conical plate 6 is provided. A slide shaft 23 is slidably fitted into the slide guide tube 22. The slide shaft 23 is provided with the other conical plate 4. 24 is a passive nut provided on the slide shaft 23; 25 is an adjusting screw on the slide guide tube 22 side screwed into the passive nut 24; and 26 is a chip avoider provided between the cutter 2 and the pressing member A.

According to the processing apparatus described above, since the cutting system and the copying system can be separated, no copying pressing force is applied to the spindle 1. Therefore, it is possible to solve problems such as the shaft becoming fatigued and breaking due to intense vibration during cutting.

The embodiment described above is applied to a processing machine that performs groove processing on one end of the workpiece W. However, it goes without saying that the present invention can be applied without exception to processing machines that simultaneously cut the workpiece W and simultaneously form bevels on both ends thereof.

(Effects of the Invention) As described above, the beveling device according to the present invention is capable of varying the outer diameter of the pressing member for pressing the copying ring against the outer peripheral surface of the workpiece in the diametrical direction. Therefore, the cutting size of the cutter can be freely set by adjusting the cutter, which has the effect of being able to handle various types of bevel processing. Therefore, conventional problems can be rationally solved.

[Brief explanation of the drawing]

The drawings show an embodiment of the beveling device according to the present invention, and FIG. 1 is a longitudinal sectional side view of this device. FIG. 2 is a longitudinal sectional front view taken along line Y-Y in FIG. 1. FIG. 3 is a longitudinal side view showing another embodiment. FIG. 4 is an explanatory diagram showing the beveling shape of a vibrator material. FIGS. It is a diagram.

Claims (1)

[Claims] A processing machine in which a copying member is attached to the tip of a cutter and cutting is performed while the copying member is aligned along the outer circumferential surface of a workpiece. A pressing member that can be adjusted in the direction of rotation and whose center coincides with the center of rotation of the cutter, and a copying ring that is larger in diameter than the abutment portion on the outer periphery of the pressing member. Pre-processing equipment.