CN203875655U - A Bevel Milling Fixture for Circular Measuring Tool - Google Patents

Abstract

An arc measuring tool inclined plane milling clamp relates to the machining of a turbine blade. The arc measuring tool groove slope processing device aims at solving the problems that arc measuring tool groove slope processing efficiency is low and back chipping effect is not good. The utility model discloses a anchor clamps specific upper surface is provided with sunken corresponding with circular arc measuring tool bottom surface, sunken bottom surface is the inclined plane, and the inclined plane is 6 +/-1' with the contained angle of bottom surface, is provided with the screw hole of two symmetric distributions along its length direction on the inclined plane, and the direction of depth of this screw hole is perpendicular with the inclined plane, and the clamp plate is used for pushing down the both sides of circular arc measuring tool, is provided with the through-hole on the clamp plate, and the supporting shoe is located between the anchor clamps body clamp plate, is used for supporting two clamp plates respectively, and is fixed through holding screw between two clamp plates and the. The clamp not only improves the processing efficiency and the processing precision, but also has good back chipping effect because both ends of the processed inclined plane are not provided with milling cutter fillets. The utility model is suitable for a processing on circular arc measuring tool inclined plane.

Description

A Bevel Milling Fixture for Circular Measuring Tool

technical field

The utility model relates to the field of mechanical processing of steam turbine blades.

Background technique

The arc measuring tool is a special tool used to detect the arc of the blade root when processing the steam turbine blade. The groove bottom angle of the arc measuring tool is designed to be 6°±3′. In the past, the ball end milling cutter was used to process the inclined surface, and the curved surface was used. The milling processing method not only has low processing efficiency, but also has milling cutter fillets at both ends, and the cleaning effect is not good.

Utility model content

The purpose of the utility model is to solve the problems of low processing efficiency and poor root cleaning effect of the arc measuring tool groove slope, and provide a circular arc measuring tool inclined plane milling fixture.

A bevel milling fixture for an arc measuring tool according to the utility model includes a fixture body, two support blocks of the same size and two pressure plates of the same size;

The clamp body includes a bottom plate and a boss, the bottom plate is a rectangular flat plate, the boss is fixed at the center of the bottom plate, the bottom surface of the boss is rectangular, and its width is the same as that of the bottom plate, and the upper surface of the boss is parallel to the bottom surface , and the upper surface is provided with a depression corresponding to the bottom surface of the arc measuring tool. The depression is used to place the arc measuring tool. The included angle with the upper surface of the boss is an obtuse angle, and the included angle between the inclined surface and the bottom surface of the boss is 6°±1′. Two symmetrically distributed threaded holes with the same size are arranged on the inclined surface along its length direction. The depth direction of the hole is perpendicular to the slope. Two pressure plates are used to press the two sides of the arc measuring tool. The pressure plate is provided with a through hole corresponding to the threaded hole. Two support blocks are located between the clamp body pressure plates, respectively for supporting Two pressing plates are fixed between the two pressing plates and the clamp body by set screws.

The inclined plane milling fixture of the arc measuring tool described in the utility model precisely positions the arc measuring tool on the inclined surface of the clamping body, so that the inclined surface of the arc measuring tool is positioned in the horizontal direction, and the arc measuring tool can be processed by using the end face of a general-purpose end mill slope. The fixture has a simple structure, is economical and practical, not only greatly improves the processing efficiency, but also has no milling fillets at both ends of the bevel processed by the general-purpose end mill, so the cleaning effect is good. In addition, the inclination angle of the inclined surface of the arc measuring tool can be controlled within 6°±2′, which greatly improves the machining accuracy.

Description of drawings

Fig. 1 is a front view of a bevel milling jig for an arc measuring tool according to Embodiment 1;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the front view of the clip body in Embodiment 1;

Fig. 4 is the top view of Fig. 3;

Fig. 5 is the left view of Fig. 3;

Figure 6 is the front view of the support block in Embodiment 1

Fig. 7 is the left view of Fig. 6;

Fig. 8 is the front view of the middle pressure plate in Embodiment 1;

Figure 9 is a top view of Figure 8;

Fig. 10 is a left side view of Fig. 8 .

Detailed ways

Specific Embodiment 1: This embodiment is described with reference to FIGS. 1 to 10 . A circular arc measuring tool bevel milling fixture described in this embodiment includes a clamp body 1 , two support blocks 2 of the same size and two pressure plates of the same size 3;

The clamp body 1 includes a bottom plate 1-1 and a boss 1-2, the bottom plate 1-1 is a rectangular flat plate, the boss 1-2 is fixed at the center of the bottom plate 1-1, and the bottom surface of the boss 1-2 It is a rectangle with the same width as the bottom plate 1-1. The upper surface of the boss 1-2 is parallel to the bottom surface, and the upper surface is provided with a depression corresponding to the bottom surface of the arc measuring tool 4. The depression is used to place the circular arc measuring tool 4. Arc measuring tool 4, the bottom surface of the depression is a slope, the slope is perpendicular to the side of the depression, the angle between the side of the depression and the upper surface of the boss 1-2 is an obtuse angle, and the slope and the boss 1-2 The included angle of the bottom surface is 6°±1′, two symmetrically distributed threaded holes with the same size are arranged on the inclined surface along its length direction, the depth direction of the threaded holes is perpendicular to the inclined surface, and the two pressure plates 3 are used to press the circle On both sides of the arc measuring tool 4, the pressure plate 3 is provided with a through hole corresponding to the threaded hole, and the two support blocks 2 are located between the clamp body 1 and the pressure plate 3, and are used to support the two pressure plates 3 respectively. The two pressure plates 3 and the clamp Specifically, 1 is fixed by set screws.

The structure of the clip body 1 is shown in FIG. 3 , FIG. 4 and FIG. 5 . The clamp body 1 is positioned on the CNC milling machine workbench with the bottom surface, and the two sides of the clamp body 1 are tightened on the machine tool workbench by external pressure plates. The arc measuring tool 4 is positioned and installed on the 6° slope of the clamp body 1, and the slope angle of the clamp body 1 is consistent with the slope angle of the arc measuring tool 4, which can ensure the machining accuracy. The threaded hole cooperates with the set screw, and the arc measuring tool 4 is fastened on the clamp body 1 by the set screw.

The structure of the supporting block 2 is shown in Fig. 6 and Fig. 7 . The height of the support block 2 is consistent with the height of the arc measuring tool 4 , and the auxiliary pressing plate 3 clamps the arc measuring tool 4 on the clamping body 1 .

The structure of the pressing plate 3 is shown in FIG. 8 , FIG. 9 and FIG. 10 . The two ends of the pressure plate 3 are respectively pressed on the arc measuring tool 4 and the support block 2, the through hole on the pressure plate 3 is located between the arc measuring tool 4 and the support block 2, and the set screw passes through the through hole on the pressure plate 3 and the clamp body 1 Clamp the arc measuring tool 4 on the clamp body 1. Edges and corners of the pressing plate 3 are all provided with chamfering or chamfering.

The inclined plane milling fixture for arc measuring tool described in this embodiment uses its inclined surface to locate the arc measuring tool 4, and positions the inclined surface of the arc measuring tool 4 in the horizontal direction, as shown in Fig. 1 and Fig. The end face of the milling cutter processes the inclined plane of the arc measuring tool 4 . The fixture has a simple structure, is economical and practical, not only greatly improves the processing efficiency, but also has no milling fillets at both ends of the bevel processed by the general-purpose end mill, so the cleaning effect is good. In addition, the inclination angle of the inclined plane of the arc measuring tool 4 can be controlled within 6°±2′, which greatly improves the machining accuracy.

Specific embodiment 2: This embodiment is described in conjunction with FIG. 9 . This embodiment is a further limitation of the bevel milling jig for an arc measuring tool described in Embodiment 1. In this embodiment, the through hole on the pressure plate 3 For the waist hole.

The length direction of the waist-shaped hole is the same as that of the pressing plate 3 , and the waist-shaped hole can increase the moving range of the pressing plate 3 . When in use, one end of the pressing plate 3 is pressed on the arc measuring tool 4, and the other end is pressed on the support block 2, the position of the pressing plate 3 is adjusted, and fixed with set screws.

Embodiment 3: This embodiment is a further limitation of the bevel milling jig for arc measuring tools described in Embodiment 1. In this embodiment, the clamp body 1 is one piece.

The one-piece structure is simple, and can increase the strength of the clip body 1 .

Embodiment 4: This embodiment is a further limitation of the arc measuring tool bevel milling jig described in Embodiment 1. In this embodiment, the size of the bottom plate 1 - 1 is 280mm×85mm×25mm.

Embodiment 5: This embodiment is described in conjunction with FIG. 8 . This embodiment is a further limitation of the bevel milling jig for an arc measuring tool described in Embodiment 1. In this embodiment, the pressure plate 3 is "L" Shape, the through hole on the pressure plate 3 is located on the long side of the "L" shape.

The end faces of the short sides of the "L" shape are used to compress the arc measuring tool 4 .

Embodiment 6: This embodiment is a further limitation of the bevel milling jig for arc measuring tools described in Embodiment 4. In this embodiment, the length of the pressing plate 3 is 80 mm, the width is 30 mm, and the thickness is 10 mm.

Specific Embodiment 7: This embodiment is a further limitation of the bevel milling jig for arc measuring tools described in Embodiment 4. In this embodiment, the support block 2 is a cuboid with a size of 77mm×55mm×30mm , two surfaces of 55mm×30mm are in close contact with the pressure plate 3 and the clamp body 1 respectively.

Embodiment 8: This embodiment is a further limitation of the arc measuring tool bevel milling jig described in Embodiment 1. In this embodiment, the size of the threaded hole is M12.

Ninth specific embodiment: This embodiment is a further limitation of the bevel milling jig for arc measuring tools described in Embodiment 2. In this embodiment, the width of the waist-shaped hole is 12.5 mm.

Claims (9)

1. a circular arc measurer angular milling fixture, is characterized in that: it comprises clamp body (1), two measure-alike back-up blocks (2) and two measure-alike pressing plates (3);

Described clamp body (1) comprises base plate (1-1) and boss (1-2), described base plate (1-1) is rectangular flat plate, boss (1-2) is fixed on the center of described base plate (1-1), the bottom surface of boss (1-2) is rectangle, its width is identical with the width of base plate (1-1), the upper surface of boss (1-2) is parallel with bottom surface, and described upper surface is provided with the depression corresponding with circular arc measurer (4) bottom surface, this depression is used for placing circular arc measurer (4), the bottom surface of described depression is inclined-plane, the lateral vertical of this inclined-plane and described depression, the angle of the upper surface of the side of described depression and boss (1-2) is obtuse angle, and the angle of the bottom surface of inclined-plane and boss (1-2) is 6 ° ± 1 ', on inclined-plane, be provided with along its length two symmetrical and measure-alike screwed holes, the depth direction of this screwed hole is vertical with inclined-plane, two pressing plates (3) are for pushing down the both sides of circular arc measurer (4), pressing plate is provided with the through hole corresponding with screwed hole on (3), two back-up blocks (2) are positioned between clamp body (1) pressing plate (3), be respectively used to support two pressing plates (3), between two pressing plates (3) and clamp body (1), by holding screw, fix.

2. a kind of circular arc measurer angular milling fixture according to claim 1, is characterized in that: the through hole on described pressing plate (3) is mounting hole.

3. a kind of circular arc measurer angular milling fixture according to claim 1, is characterized in that: described clamp body (1) is integrated part.

4. a kind of circular arc measurer angular milling fixture according to claim 1, is characterized in that: described base plate (1-1) is of a size of 280mm * 85mm * 25mm.

5. a kind of circular arc measurer angular milling fixture according to claim 1, is characterized in that: described pressing plate (3) is " L " shape, and the through hole on pressing plate (3) is positioned on the long limit of described " L " shape.

6. a kind of circular arc measurer angular milling fixture according to claim 4, is characterized in that: described pressing plate (3) length is 80mm, and width is 30mm, and thickness is 10mm.

7. a kind of circular arc measurer angular milling fixture according to claim 4, it is characterized in that: described back-up block (2) is cuboid, it is of a size of 77mm * 55mm * 30mm, the surface of two 55mm * 30mm respectively with pressing plate (3) and clamp body (1) close contact.

8. a kind of circular arc measurer angular milling fixture according to claim 1, is characterized in that: described screwed hole is of a size of M12.

9. a kind of circular arc measurer angular milling fixture according to claim 2, is characterized in that: the width of described mounting hole is 12.5mm.