JPH08323524A - Chamfering device - Google Patents

Abstract

PURPOSE: To provide a chamfering device capable of rationally chamfering an edge, which forms the three dimensional curve of a wing part presenting a twisted plate shape, with a simple constitution. CONSTITUTION: A workpiece is supported by a workpiece supporting block 23 oscillating by a parallel shaft to the moving direction of a movable table 20 on the top of the movable table 20, which moves along a guide member 12, and an air grinder 31 for a cutter 33 to make a rotating drive is oscillatingly pivoted centering a pivot shaft 32A on the rear side of the movable table 20. The cutter 33 supported by the weight of a dead-weight 34 is oscillatingly energized and provided as the workpiece 1 side and a recessed shape cutting edge 33A of the cutter 33 comes in contacted with the edge 1A of the workpiece 1 with pressure by means of oscillating energy force of the dead-weight. 34.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chamfering device for chamfering an edge portion of a twisted plate member such as a wing component.

[0002]

2. Description of the Related Art A blade component such as a compressor vane in a compressor of a jet engine has a twisted long plate shape and its cross-sectional shape gradually changes in the longitudinal direction.
The edge is not a straight line but a three-dimensional curve.

The edge portion of such an aerodynamic component needs to be formed in a smooth arc shape, and the production by casting is relatively easy.

Recently, however, it has been practiced to bond alloy sheet materials by brazing to have a hollow portion inside, and in such a manufacturing method, since the sheet materials are joined at the edge portions, this end is used. The edge must be chamfered into an arc by cutting or grinding.

[0005]

However, the chamfering process is difficult to automate because the edge portion of the blade component is a three-dimensional curve as described above, and it is difficult for an operator to use a belt sander or the like. It is done by hand grinding. As a result, the number of workers is limited because the work requires experience, and the quality and processing time vary depending on the workers, which is extremely unreasonable.

The present invention has been made in view of the above problems, and it is possible to reasonably chamfer the edge portion, which is a three-dimensional curve, of a blade component having a twisted plate shape with a simple structure. It is an object of the present invention to provide a chamfering processing device that can be used.

[0007]

A chamfering apparatus of the present invention for achieving the above object is intended to chamfer an edge of a twisted plate-like work, and the work is substantially processed. A cutter having a chamfered concave cutter that is rotationally driven by a rotary driving means, and a moving table that is movable in a direction parallel to the axis. A cutting means having a rotating shaft orthogonal to the moving direction of the moving table and swingably supported by a swing shaft parallel to the moving direction of the moving table; And a swinging biasing unit that swings and biases with a predetermined force in a direction toward.

[0008]

The cutting cutter of the grinding means is pressed against the work edge of the work by the swinging biasing means and is rotationally driven by the rotation driving means to move the moving table to chamfer the work edge. At this time, the processed portion of the processed edge corresponding to the cutter is displaced forward and backward and up and down, but the displacement in the front-back direction is guided by the cutter to the processed edge of the work and the work is centered on the support shaft by the support means. As a result, the machining means is guided by the end edge of the workpiece to be swung, and the chamfering is performed following the displacement of the workpiece.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an overall perspective view of an embodiment of a chamfering apparatus according to the present invention. The illustrated chamfering device 10 chamfers a rear end edge portion 1A of a work 1 which is a stationary blade of a compressor of a jet engine and whose perspective view is shown in FIG. Cylindrical support protrusions 1B are respectively provided at both ends of the work 1 in the longitudinal direction, and the support protrusions 1B penetrate the work 1 in the longitudinal direction substantially in parallel with the rear edge portion 1A which is an end edge to be processed. It is arranged on a substantially straight axis. The rear end edge portion 1A is a curve that is displaced in the front / rear direction: Y and in the upper / lower direction: Z with respect to a reference line: O parallel to the linear axis as shown in the figure.

In the chamfering apparatus 10, guide rails 12 are provided on the upper surface of a frame 11 so as to extend left and right, and a moving table 20 is mounted on the guide rails 12.
It is movably supported along with, and a cutting mechanism 30 as a processing means is arranged on the center rear side. The moving table 20 and the cutting mechanism 30 above the frame 11 are covered with a transparent acrylic cover 13, and the front surface of the cover 13 can be swingably opened and closed.

The movable table 20 is provided with an operation arm 21 projecting rearward at the left end in the figure, and the operation arm 21 and a rod of an air cylinder 14 provided in parallel with the guide rail 12 on the frame 11 are connected to each other. The air cylinder 14 is driven to move along the guide rail 12. The moving range is substantially equal to the length of the moving table 12, and the cutting mechanism 30 is provided at the center of the frame 11 in the left-right direction as illustrated.
From the position of the region on the right side to the region on the left side of the cutting mechanism 30, the left end of the work 1 supported on the moving table 20 is moved from the position corresponding to the cutting mechanism 30 to the right end. The parts can be moved to the corresponding positions. The movement drive range is set by operating a pair of left and right limit switches (not shown) provided on the upper surface of the frame 11 by an operation piece (not shown) provided on the moving table 20. The setting can be appropriately changed according to the length of the work 1.

A height regulating plate 22 is erected on the upper surface of the moving table 20 in parallel with the moving direction thereof, and work supporting blocks 23 as supporting means are provided on the front surfaces of both ends.

As shown in FIG. 3, which is an enlarged view of the arrow A in FIG. 1, the height regulating plate 22 is a plate having a predetermined thickness and is erected vertically on the upper surface of the moving table 20 and above it. Edge 22A
Is formed in a predetermined relationship with the height of a corresponding portion of the work 1 supported by the work support block 23. By supporting the inserted bearing 36, the cutter 31 is prevented from moving downward and the processing amount is regulated.

The work support block 23 is of a so-called V block shape having a V-shaped support groove 23A that opens upward, and is fixed with the extending direction of the support groove 23A parallel to the moving direction of the moving table 20. And support groove 2
The support protrusion 1B of the work 1 is supported by 3A. As a result, the work 1 is swingably supported about the support protrusion 1B. Reference numeral 24 is a stopper that is provided on both front and rear sides of the work 1 to prevent the work 1 from being inverted.

The cutting mechanism 30 has an air grinder 31 as a rotation driving means at the center of the frame 11 in the left-right direction.
Is a pivot shaft 32A parallel to the moving direction of the moving table 20.
It is configured to be swingably supported by the bracket 32.

The air grinder 31 holds the cutter 33 on its chuck, is provided so that the cutter 33 faces forward (to the side of the movable table 20) and is orthogonal to the moving direction of the moving table 20, and has a pivot 32A. When it swings about, the cutter 33 swings in a plane orthogonal to the moving direction of the moving table 20. Further, the arrangement position is set so that when the cutter 33 is horizontal, its blade, which will be described later, just corresponds to the rear end edge 1A of the work 1 supported by the work support block 23.

A wire rope 35 having a weight 34 at the other end is connected to the rear end of the air grinder 31 (on the side opposite to the cutter 33). The wire rope 35 is provided on the pillar 15 which is erected on the rear portion of the frame 11.
The weight 16 side vertically hangs down the pulley 16 provided on the upper part of the air grinder 31. As a result, the air grinder 31 swings and biases the cutter 33 downward due to the weight of the weight 34. Has been done.

As shown in FIG. 3, the cutter 33 has a concave cutting blade portion 33A corresponding to the chamfered shape of the work 1 formed on the peripheral surface of the shank 33B. A bearing 36 is externally arranged at a position corresponding to the height direction regulation guide plate 22 of the shank 33B.

The chamfering device 10 constructed as described above operates as follows to chamfer the rear edge 1A of the work 1.

First, the moving table 20 is positioned at the right end of its moving range, and the work 1 is supported by the work supporting block 23 of the moving table 20 with its rear end edge 1A facing upward. The work 1 has support projections 1B at both ends thereof placed on a support block 23 and is swingably supported about the support projections 1B, and a stopper 2 prevents tilting in the front-back direction.
Regulated by 4.

In this state, the left end of the work 1 corresponds to the cutting mechanism 30, and the cutting blade portion 33A of the cutter 33 of the cutting mechanism 30 is placed on the rear edge 1A of the work 1. As a result, the cutter 33 is pressed onto the rear end edge portion 1A of the work 1 by the swinging biasing force of the weight 34, and the rear end edge portion 1A of the work 1 is inserted into the recess of the cutting blade portion 33A.
The work 1 is held without falling back and forth due to the fact that it fits in.

In this state, the air grinder 31 is rotationally driven while the air cylinder 14 is driven to move the moving table 20 to the left, whereby the cutter 33 which rotates to the rear edge 1A of the work 1 is moved to a predetermined position. The rear end edge portion 1A is pressed by force (swing biasing force of the weight 34).
The trailing edge portion 1A is chamfered while moving along.

Since the trailing edge 1A is a three-dimensional curve, the portion of the trailing edge 1A corresponding to the cutting mechanism 30 (the portion cut by the cutter 33) moves the moving table 20 (of the work 1). It moves vertically and back and forth with the movement in the support axis direction). With respect to the displacement of the rear edge portion 1A to be processed, the displacement in the vertical direction corresponds to the swing of the air grinder 31, and the displacement in the front-back direction corresponds to the swing of the work 1. That is, since the rear end edge portion 1A of the work 1 is fitted in the concave portion of the cutting blade portion 33A of the cutter 33, the cutting blade is urged by the swing biasing force of the weight 34 with respect to the vertical displacement. The portion 33 always follows the rear end edge portion 1A of the work 1 by pressing it, and is guided by the concave portion of the cutting blade portion 33A of the cutter 33 with respect to the displacement in the front-rear direction, and the work 1 swings by the same amount as the displacement amount. It moves.

The cutting blade portion 33A of the cutter 33 is the work 1
When it reaches the right end (end), the air cylinder 14 is driven in reverse to return to the initial state (start), and the cutting is repeated until the trailing edge 1A is chamfered into a predetermined arc shape. When returning from the terminal end to the starting end, the driving of the air grinder 31 (rotation of the cutter 33) may be stopped to stop the cutting, or the cutting may be continued. It may be selected so as to obtain a good finish in relation to the above. However, it goes without saying that the cutting is completed in a shorter time when the cutting is performed in a reciprocating manner.

The cutting amount is regulated by the bearing 36, which is externally inserted in the cutter 33, coming into contact with the upper edge surface of the height regulating plate 22. In other words, the upper edge surface 22A of the height regulating plate 22 is formed into a shape in which the outer surface of the bearing 36 just comes into contact with the cutter 33 when the cutter 33 moves along the edge of the work piece 1 that has been properly processed (after processing is completed). On the contrary, when cutting progresses during processing and the bearing 36 contacts the upper edge surface 22A of the height regulating plate 24,
The pressure regulating force of the cutter 33 is received by the height regulating plate 22 via the bearing 36, and the cutter 3 to the work 1
The pressure contact of No. 3 is released so that cutting is not performed.

In the above embodiment, the work 1 is swingably supported by the work support block 23 which is provided on the work 1 so as to support the work 1. However, a rotary center used for a lathe is used. You may comprise so that it may support. Further, although the urging means for urging the cutter 33 against the work 1 is constituted by the weight 34, it may be constituted by a spring or the like. Furthermore,
Although the moving drive of the moving table 20 is performed by the air cylinder 14, it may be configured manually.

[0027]

As described above, according to the chamfering processing apparatus of the present invention, the cutter of the processing means is brought into pressure contact with the edge of the workpiece to be processed by the swinging biasing means, and is rotationally driven by the rotary drive means. By moving the movable table, the cutter is guided by the cutter with respect to the front-back displacement of the portion to be machined, and the swinging motion about the work support shaft causes the machining means with respect to the vertical displacement. Accordingly, chamfering can be performed by following the displacement of the processed portion. Therefore, it is possible to reasonably chamfer the edge portion, which is a three-dimensional curve of the blade component having the twisted plate shape, into a circular arc shape with a simple configuration.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of an embodiment of a chamfering apparatus according to the present invention.

FIG. 2 is a perspective view of a work.

FIG. 3 is an enlarged cross-sectional view showing a processed state of a starting end portion of a work, which corresponds to a view taken along arrow A in FIG.

FIG. 4 is an enlarged cross-sectional view showing a processed state of the end portion of the work.

[Explanation of symbols]

 1 Work 20 Moving Table 23 Work Support Block (Support Means) 30 Cutting Mechanism (Processing Means) 31 Air Grinder (Rotation Driving Means) 32A Pivot Shaft (Rotation Shaft) 33 Cutter 34 Weight (Rotation Energizing Means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kimihiro Yamazaki 3-5-1, Mukaidai-cho, Tanashi-shi, Tokyo Ishikawa Shimaharima Heavy Industries Ltd. Tanashi factory (72) Tadao Okabe 3-chome, Mukaidai-cho, Tanashi, Tokyo No. 5 Ishikawa Shima Harima Heavy Industries Ltd. Tanashi factory

Claims (1)

[Claims] 1. A chamfering process of an edge of a twisted plate-like work, comprising a supporting means for swingably supporting the work around an axis substantially along the edge to be processed, A movable table movable in a direction parallel to the axis; and a chamfered concave cutter which is rotationally driven by a rotational drive means, the rotational axis of the cutter being orthogonal to the moving direction of the movable table, and the movable table. And a swinging means for swinging and biasing the processing means with a predetermined force in the direction toward the work side of the cutter. And a chamfering device.