JPH11216607A - Double spindle cutter beveling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress vibration during cutting so as to perform highly accurate beveling work by aligning the inclined attitude of a plurality of cutting heads as much as possible to set these in good balance. SOLUTION: A plurality of cutting heads 2a and 2b capable of adjusting inclining angles are disposed in a running base, and first and second cutters 3a and 3a attached to these cutting heads 2a and 2b are set to correspond to the upper and lower edge parts of a machined material W. The cutting edge tips of the cutters 3a and 3b are composed of bottom and outer peripheral cutters (m) and (n), and the cutting edge tips of the cutters 3a and 3b are selectively used according to beveling angles. By such selective use, the inclined moving range of the cutters 3a and 3b is made small, and the inclined attitude of the plurality of cutting heads 2a and 2b are aligned as much as possible and set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-axis cutter type beveling apparatus capable of temporarily performing a beveling process such as a K-shape with a plurality of cutters.

[0002]

2. Description of the Related Art In order to perform welding, groove processing of a work material is indispensable, and in order to obtain sound welding quality, cutting processing of a groove surface with a cutter has recently been frequently performed. For example, in the case of a thick plate member, processing such as a K-shaped groove shown in FIG. 14 is performed, and a multi-axis head type processing machine described in JP-A-6-79511 is provided. Is done.

In this conventional beveling machine, as shown in FIG. 13, a workpiece W is clamped and fixed on a table 11, while a traveling base 12 has two cutting heads 12a and 12b.
The cutters 13a, 13b attached to the tips of the cutting heads 12a, 12b are moved and adjusted in the longitudinal (Y-axis), vertical (Z-axis), and inclined (Ra-axis and Rb-axis) directions. After the cutters 13a and 13b are set at required processing positions, the cutter 13a and 13b are moved in the front and back directions in the drawing to perform groove processing.

[0004]

SUMMARY OF THE INVENTION In a K-shaped groove,
As shown in FIG. 14, one cut surface Na at the edge is upward, and the other cut surface Nb is downward. Here, the conventional beveling machine includes cutters 13a and 13b.
The cutting process was performed using the bottom blade k of the above. Therefore, the respective cutting heads 12a and 12b had to take a posture in which the cutting heads 12a and 12b protrude obliquely upward and obliquely downward conversely.
Very poorly balanced form.

[0005] Therefore, in the prior art, there is a problem that vibrations are generated during the cutting process due to the above, and a resonance phenomenon associated therewith is caused to cause a reduction in cutting accuracy or a reduction in cutting efficiency.

The present invention has been made in view of the above-mentioned problems of the prior art, and performs a well-balanced and stable cutting process by setting the postures of a plurality of cutting heads as much as possible. It is an object of the present invention to provide a multi-axis cutter type beveling apparatus capable of performing the above-mentioned operations.

[0007]

In order to achieve the above-mentioned object, a multi-axis cutter type groove processing apparatus according to the present invention is configured as follows.

That is, the point is that a plurality of cutting heads capable of adjusting the inclination angle are arranged on the traveling base, and the cutters attached to the cutting heads correspond to the upper edge and the lower edge of the work material, respectively. In the beveling machine that performs the cutting process, the cutting edge of the cutter is constituted by a bottom edge and an outer edge, and the cutting edge is clearly divided by these, and one of the two edges is selected and machined. The object is to set the inclination postures of both cutting heads to be as uniform as possible by corresponding to the edge of the material.

[0009] Further, the groove processing apparatus according to the present invention is characterized in that, in claim 2, the bottom blade and the outer peripheral blade are configured to have a right angle or an obtuse opening angle.

When the first cutter corresponding to the upper edge of the workpiece is viewed, for example, when the groove angle is small as shown in FIGS. 2 and 3, the bottom blade m is used. As described above, when the groove angle is large, the inclination adjustment range of the cutting head can be made as small as possible by using the outer peripheral edge n.

When the second cutter corresponding to the lower edge of the work material is viewed, for example, when the groove angle is small as shown in FIG. 7, the bottom blade m is used, and as shown in FIGS. 8 and 9, When the groove angle is large, the inclination adjustment range of the cutting head can be reduced by using the outer peripheral edge n.

[0012] The bottom blade and the outer peripheral blade are set to an opening angle of, for example, 120 degrees, and as shown in Fig. 11, the groove angle of the upper edge of the work material is 30 degrees, and the groove angle of the lower edge is -45. In the case of a K-shaped groove, the two cutting heads are only 1
It is possible to set the posture to an angle difference of 5 degrees.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a double-axis cutter type beveling apparatus according to the present invention will be specifically described. FIG.
, W is a workpiece 2a and 2b clamped and fixed on a horizontal table 1 and a common traveling base (not shown).
And the other cutting head that travels in the front and back direction in the drawing, these cutting heads 2a and 2b are vertically (Z axis), left and right (Y axis) and inclined (Ra axis, (Rb axis).

Reference numerals 3a and 3b denote a first cutter and a second cutter attached to the tips of the cutting heads 2a and 2b.
Is disposed corresponding to the lower edge.
These cutters 3a, 3b form a bottom blade m and an outer peripheral blade n as cutting edges in a truncated conical body 4. The outer peripheral edge n is perpendicular or obtuse to the bottom edge m (120 in this embodiment).
Degrees), and the cutting edges are clearly separated.

The construction of the double-axis cutter type groove processing apparatus according to one embodiment is as described above, and the groove angle is set when the first cutter 3a corresponds to the upper edge of the workpiece W. Is smaller, the cutter 3a is tilted downward as shown in FIG. 3, and the bottom blade m is used. When the groove angle is from 0 degree to +30 degrees, the inclination movement range of the cutter 3a is from 0 degree to 30 degrees downward.

Next, when the groove angle is large, the cutter 3
a is tilted upward or downward, and the outer peripheral blade n is used. When the groove angle is from +45 degrees (FIG. 4) to +84 degrees (FIG. 6), the inclination movement range of the cutter 3a is 1 upward.
From 5 degrees to 26 degrees downward. Although not shown, when the groove angle is from +30 degrees to +45 degrees, the cutter 3a is tilted upward and the outer peripheral blade n is used. At this time, the inclination adjustment range of the cutter 3a is from 30 degrees upward to 15 degrees upward.
Degrees.

A second cutter 3b is provided at the lower edge of the workpiece W.
And when the groove angle is small,
As shown in FIG. 7, the cutter 3b is inclined and moved upward, and the bottom blade m is used. When the groove angle is from 0 degree to -30 degrees, the inclination movement range of the cutter is from 0 degree to 30 degrees upward.

When the groove angle is large, the cutter 3b is inclined downward and the outer blade n is used. From the groove angle of -30 degrees in FIG. 8 to the groove angle of -60 degrees in FIG. 10, the inclination movement range of the cutter 3b is from 30 degrees downward to 0 degrees.

Accordingly, when the K-shaped beveling is performed by the cutters 3a and 3b which can selectively use the bottom blade m and the outer peripheral blade n, for example, as shown in FIG. The angle is +30 degrees and the groove angle at the lower edge is -4.
At 5 degrees, the first cutter 3a is turned downward at 30 degrees,
In addition, the second cutter 3b may be set at a downward angle of 15 degrees in the same manner, and the inclination can be set as uniform as possible.

After the adjustment of the tilt movement is completed, the vertical and horizontal positions of the first and second cutters 3a and 3b are adjusted in consideration of the root face size of the workpiece W, and the travel is performed after the setting. Cutter 3 by base
a and 3b travel in the front and back directions in the figure. This makes it possible to temporarily perform the required K-shaped groove processing on the workpiece W.

In the above-described embodiment, the opening angle between the bottom blade a and the outer peripheral blade b is set to 120 degrees. However, if the opening angle is set to be larger than that, the inclination movement range of the cutter can be further reduced. For example, when the opening angle is 135 degrees, the practical groove angle (groove angle +60 degrees to groove angle -60 degrees)
In degrees), the tilt movement range is from 15 degrees downward to 1 upward.
The angle can be set within 5 degrees, which is advantageous in that the two cutting heads 2a and 2b are set to be aligned.

Although it is true that the inclination movement range can be reduced by increasing the opening angle of the cutter 2 as described above, the difference in the outer dimensions of the cutters 3a and 3b increases. The peripheral speed difference between the tip of the outer peripheral blade b and the root becomes significant. Therefore, in this case, an appropriate range must be determined within an allowable value for cutting.

The opening angle of the cutters 3a and 3b is within the recommended range from the obtuse angle to the right angle (90 degrees), and can be less than the worst case (a sharp angle). It is not recommended to practice outside of favorable design conditions because the range of the tilt movement becomes progressively larger.

[0024]

As described above, according to the double-axis cutter type groove processing apparatus according to the present invention, by setting the postures of a large number of cutting heads to be as uniform as possible, a well-balanced cutting can be performed. The present invention has an excellent effect that the conventional problems can be solved.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of a multi-axis cutter type groove processing apparatus according to the present invention.

FIG. 2 is an explanatory diagram of a cutting state by the groove processing apparatus of the present invention.

FIG. 3 is an explanatory view of a processing state.

FIG. 4 is also an explanatory diagram of a processing state.

FIG. 5 is an explanatory view of a processing state.

FIG. 6 is also an explanatory diagram of a processing state.

FIG. 7 is an explanatory view of a processing state.

FIG. 8 is an explanatory view of a processing state.

FIG. 9 is also an explanatory view of a processing state.

FIG. 10 is an explanatory view of a processing state.

FIG. 11 is an explanatory view showing a machining state of a K-shaped groove.

FIG. 12 is an explanatory view of a machining state of a K-shaped groove.

FIG. 13 is an explanatory view of a conventional groove processing apparatus.

FIG. 14 is an explanatory diagram of a groove processing state by a conventional groove processing apparatus.

[Explanation of symbols]

 Reference Signs List 1 Table 2a One cutting head 2b The other cutting head 3a First cutter 3b Second cutter 4 Body m Bottom blade n Outer edge W Work material

Claims (2)

[Claims] 1. A plurality of cutting heads capable of adjusting an inclination angle are provided on a traveling base, and a cutter attached to the cutting head performs cutting corresponding to an upper end edge and a lower end edge of a work material, respectively. In the beveling machine to be performed, the cutting edge of the cutter is constituted by a bottom edge and an outer edge, and the cutting edge is clearly divided by these,
By selecting one of the two cutting edges and corresponding to the edge of the work material, the tilting posture of the two cutting heads is set to be as uniform as possible. Beveling equipment. 2. The multi-axis cutter-type beveling device according to claim 1, wherein the bottom blade and the outer peripheral blade have an opening angle of a right angle or an obtuse angle.