JPH0112937Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a holding device for holding a workpiece having a slope, such as a turbine blade blank.

FIGS. 1A and 1B are perspective views of a turbine blade material, and the blade material W has its back surface 01 sloped in the longitudinal direction with respect to its ventral surface 02 with high precision.

When performing this slope machining, if the amount of overlap R between the steam inlet side surface 03 and the steam outlet side surface 04 is small, clamping from the side cannot be done. I was using a fixture that clamps from both directions. That is, this fixture consists of a main body 31, an inclined metal plate 32, and a receiver 33, and the blade material W is placed on the main body 31.
A bevel 32 having the same angle as the inclination angle E is placed and fixed, and a receiver 33 on which the blade material W is placed is placed on the bevel 32, and then the main body 3 is tightened from the side with a clamp 34.
It is tightly tightened to the vertical surface 31a of 1,
The clamp in the longitudinal direction of the blade material W is the receiver 33
This is done with a clamp claw 35 attached to the end of the clamp. However, with this conventional fixture, when attaching the blade material W, the receiver 33 is attached to the blade material W according to 1) the shape of the ventral surface;
2) It is necessary to manufacture each jig for each length, and 3) for each right-handed and left-handed orientation, and it is also necessary to manufacture each jigs 32 for each inclination angle of the blade material W, and there are many types of these jigs. It takes a lot of time to manufacture the blade material, and the manufacturing cost is also rising.

The purpose of this invention is to provide a versatile workpiece holding device that can clamp workpieces even when the workpieces, such as blade materials, have different dimensions and slopes, thereby eliminating the drawbacks of the conventional ones. This is what I did.

The structure of the workpiece holding device for slope machining according to the present invention that achieves the above object is that the workpiece holding device for slope machining tilts the workpiece and holds it on the receiver, and the workpiece holding device for slope machining has a sine bar equipped with pins at both ends. The attached inclined plate, the two-part receiver which is slidably placed on the sine bar and fixed to the slanted plate at a required interval, and the block gauge using the sine bar. Therefore, the present invention is characterized by comprising a main body to which the inclined plate set at a required inclination angle is fixed.

The present invention will be described in detail below based on embodiments shown in the drawings.

As shown in Fig. 5, the main body 1 fixed on the machine table has a mounting surface 1b vertically erected from the bottom surface 1a, and vertical long holes 1c are arranged in parallel on this vertical mounting surface 1b. A plurality of seat surfaces 1d are provided on the bottom surface 1a, and are spaced apart at appropriate intervals and have the same height. The inclined plate 2 attached to the mounting surface 1b of the main body 1 has an inclined upper end as shown in FIG. A plurality of elongated holes 2e (two in this embodiment) are bored along the longitudinal direction, and a screw hole 2b for attaching to the main body 1 is disposed between the two elongated holes 2e. A plurality of horizontal holes 2c and 2d are formed above and below the elongated hole 2e, respectively.

In this case, the horizontal hole 2d and the elongated hole 2e are formed in a stepped shape from both sides so that the width across flats of the bolt head can be accommodated therein. Further, in the lower part of the inclined plate 2, a plurality of screw holes 2a for fixing the sign bar 3 with screws are provided along the longitudinal direction.

Pins 6 are attached to both ends of the sine bar 3 by bolts 15, and the distance between the centers of these two pins 6 is a fixed dimension, and the apex 6a of the pin 6 is attached to the top surface of the sine bar. It is attached to the inclined plate 2 so as to be parallel to and have the same dimensions as 3a. The sign bar 3 is attached to the inclined plate 2 using bolts 16 alone. On the other hand, the side surface 3b of the sign bar 3 is provided with a horizontal hole 3c, similar to the horizontal hole 2c of the inclined plate 2. Furthermore, one end surface 3d is configured such that a stopper 7 can be tightened with a screw 17 to prevent displacement of the receiver 4 when clamping a workpiece. Two divided receivers 4 and 5 are placed on this sign bar 3, and the upper surfaces 4a and 5a of these receivers 4 and 5 have the same shape as the abdominal surface of the workpiece W on which they are placed. and bolts 18 are attached to the sides 4b and 5b of the bolts 8.
The workpiece W can be attached stably without wobbling.

One of the receivers 4 has screw holes 4d formed on both end faces 4c, and a stopper 9 is fastened to one side with a bolt 19, thereby functioning as a stopper in the longitudinal direction of the workpiece W. The four corner portions of this receiver 4 are fastened to the inclined plate 2 with bolts and nuts 20, 21. Furthermore, grooves 5d for inserting clamp claws 10 are formed at both ends of the other receiver 5, as shown in FIG. In this case, the clamp claw 10 can swing left and right about the pin 11, and the clamp claw 1
0 bites into the end face of the workpiece W. These receivers 4 and 5 are bolts, nuts 20,
It is attached to the inclined plate 2 by 21. By sliding the bolt 20 through the elongated hole 2e of the inclined plate 2, the distance between the receivers 4 and 5 changes, and as a result, the length thereof changes.

In the figure, reference numeral 13 denotes a stopper fixed with a bolt 23 at an arbitrary position of a large number of screw holes 3e provided on the upper surface 3a of the sign bar 3, and the tip of the adjustment bolt 24 is connected to the mounting part 12a of the hydraulic ram 12. This prevents the support 5 from shifting when the workpiece is clamped.

Further, the lower surface of one end of the sine bar 3 is supported by a block gauge 14. This block gauge 14 is placed between the seat surface 1d of the main body 1 and the pin 6 of the sign bar 3, and this makes it possible to adjust the installation angle of the inclined plate 2. The inclined plate 2 is the vertical surface 1b of the main body 1.
The bolts 25, bolts, nuts 26, 27, and 28, 27 are tightened and fixed via washers 29.

As shown in FIG. 3, the workpiece holding device of the present invention configured as described above tilts the receivers 4 and 5, which are adapted to the shape of the ventral surface of the workpiece W, on the sine bar 3 according to the length of the workpiece. It is fixed to the plate 2. In this fixation, when the distance between the centers of pins 6 and 6 of the sine bar 3 is L, and the slope angle of the workpiece W is E, the height H of the block gauge is determined by H=LsinE. Then, assemble the block gauge 14 to the H dimension, place it on the seat surface 1d of the main body 1, and then attach the inclined plate 2, on which the sine bar 3 and the supports 4 and 5 are attached, to the vertical direction of the main body 1 using bolts and nuts 25 to 29. It is fixed to the surface 1b. In this state, the workpiece W can be placed on the receivers 4 and 5 and processed by the clamp claws. Also, after this processing, the work W
Even if there is an error in the slope angle E of the block gauge 1
It can be reattached by adjusting the height H of 4. Furthermore, in the case of using it in the reverse direction, as shown in Fig. 8, turn over the inclined plate 2, attach the sign bar 3 in the opposite direction, replace the holders 4 and 5, and attach them.
This is possible by placing the block gauge 14 on the opposite side and attaching the inclined plate 2 to the main body 1.

Therefore, according to the present invention explained above, the length of the receiver can be varied according to the length of the workpiece, and
The inclination can be adjusted to match the angle of the ventral surface of the workpiece, and pins are provided at both ends of the sine bar so that it can be tilted in the opposite direction as necessary, so it can be used with reverse-handled items. Versatility for workpieces. Therefore, there is no need to manufacture many types of supports and inclined metals, which reduces jig manufacturing costs, eliminates the time required to manufacture jigs, and speeds up machining. The effect is that you can.

[Brief explanation of the drawing]

1A and 1B are perspective views of the turbine blade material, FIG. 2 is an overall perspective view of a conventional example, FIG. 3 is a front view of an embodiment of the present invention, and FIG. 5 and 6 are front views of the main body and the inclined plate, FIG. 7 is a sectional view taken along the line -- in FIG. 3, and FIG. 8 is a sectional view of another example of use. 2... Inclined plate, 3... Sign bar, 4, 5...
Receipt, 14...block gauge.

Claims (1)

[Scope of utility model registration request] A workpiece holding device for slope machining that tilts a workpiece and holds it on a receiver includes an inclined plate to which a sine bar with pins at both ends is attached, and a sine bar that is slidably placed on each of the sine bars. and a main body to which the inclined plate is fixed, which is set at a required inclination angle by a block gauge using the sine bar. A workpiece holding device for gradient machining, which is characterized by: