CN108161354A - A processing method for a double-slope radial standard block - Google Patents

Abstract

The invention discloses a method for processing a double-inclination radial standard block, relates to a method for processing a double-inclination radial standard block, aims to solve the problems of high requirement on the size precision of the standard block and difficulty in processing and manufacturing, and comprises the steps of forging a blank, scribing, milling, tool grinding and broach grinding. The invention has good practical application effect, conveniently and quickly grinds and measures the radial standard block, and the size precision of the standard block is high and is within 0.02 mm. The invention is applied to the field of blade radial surface size detection.

Description

A processing method for a double-slope radial standard block

technical field

The invention relates to a processing method of a double-slope radial standard block.

Background technique

A radial standard block is designed to detect the size of the radial surface of the blade. Manufacturing brings difficulties, therefore, it is urgent to study a process plan for processing double-slope radial standard blocks.

Contents of the invention

The object of the present invention is to provide a method for processing a double-slope radial standard block in order to solve the problems of high dimensional accuracy and difficult manufacturing of the standard block.

The processing method of a kind of double slope radial standard block of the present invention is carried out according to the following steps:

1. Forging rough

Forging a rectangular blank with a length of 306mm, a width of 85mm and a thickness of 30mm;

2. Milling

Mill the blank to a cuboid with a length of 300.6mm, a width of 80mm, and a thickness of 25.5mm, and the verticality of each surface is 0.1mm; then draw two oblique outlines of the standard block along the length direction on the upper surface of the cuboid, and record it as the upper outline E and the lower contour line B, then follow the lower contour line B, the upper contour line E and the standard milling slopes on both sides with a machining allowance of 0.3mm to obtain the lower slope B and the upper slope E; then heat treatment, and then sandblasting the surface , and then perform flat grinding, wherein the thickness of the cuboid is ground to 25 mm, and the lower slope B is ground to 0.2-0.3 mm, demagnetized, and cleaned;

3. Tool grinding machine

The left end face of the cuboid is recorded as the F face, and the F face is ground based on the flat-ground lower slope B. The angle between the F face and the slope B is 91°55′1″±20″;

4. Broach grinder

Use the angle fixture to grind the upper slope E, the slope of the upper slope E is 3.347mm±0.01/100, grind the steps on the upper slope E, the height of the steps is 0.23mm±0.01, the step distance from the F surface is 80mm, and the sharp point The size is 58.632mm±0.01, degaussing, cleaning, and engraving are complete.

The present invention has good effect through practical application, can grind and measure the radial standard blocks conveniently and quickly, and has high dimensional precision of the standard blocks, and the precision is within 0.02mm.

Description of drawings

Fig. 1 is a radial standard block diagram of the present invention;

Fig. 2 is the schematic diagram of embodiment 1 tool grinder flat grinding F face;

Fig. 3 is the schematic diagram that embodiment 1 utilizes angle fixture to grind;

Fig. 4 is a schematic diagram of testing the tip size with a Ф10 measuring stick in Example 1.

Detailed ways

The technical solution of the present invention is not limited to the specific embodiments listed below, but also includes any combination of the specific embodiments.

Specific embodiment one: the processing method of a kind of double-slope radial standard block of this embodiment is carried out according to the following steps:

1. Forging rough

Forging a rectangular blank with a length of 306mm, a width of 85mm and a thickness of 30mm;

2. Milling

Mill the blank to a cuboid with a length of 300.6mm, a width of 80mm, and a thickness of 25.5mm, and the verticality of each surface is 0.1mm; then draw two oblique outlines of the standard block along the length direction on the upper surface of the cuboid, and record it as the upper outline E and the lower contour line B, then follow the lower contour line B, the upper contour line E and the standard milling slopes on both sides with a machining allowance of 0.3mm to obtain the lower slope B and the upper slope E; then heat treatment, and then sandblasting the surface , and then perform flat grinding, wherein the thickness of the cuboid is ground to 25 mm, and the lower slope B is ground to 0.2-0.3 mm, demagnetized, and cleaned;

3. Tool grinding machine

The left end face of the cuboid is recorded as the F face, and the F face is ground based on the flat-ground lower slope B. The angle between the F face and the slope B is 91°55′1″±20″;

4. Broach grinder

Use the angle fixture to grind the upper slope E, the slope of the upper slope E is 3.347mm±0.01/100, grind the steps on the upper slope E, the height of the steps is 0.23mm±0.01, and the elevation of the steps is 80mm away from the F surface. Grinding the bottom surface of the step from M to the sharp point is 58.632mm±0.01, demagnetizing, cleaning, lettering, and it is completed.

This embodiment has a good effect through practical application. The radial standard block can be ground and measured conveniently and quickly. The standard block has high dimensional accuracy and the precision is within 0.02mm.

Embodiment 2: This embodiment differs from Embodiment 1 in that: the material of the rectangular blank described in Step 1 is 45# steel. Others are the same as the first embodiment.

Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the heat treatment method in step 2 is: first heat in a medium-temperature furnace at 820-840°C for 30 minutes, then put it in a water tank and cool it to 300-400°C , and then put it into an oil tank to cool to room temperature, and finally put it into a tempering furnace at 560°C for 2 hours. Others are the same as those in Embodiment 1 or 2.

Embodiment 4: The difference between this embodiment and Embodiment 1 to 3 is that the angle fixture in step 3 is composed of two cylindrical rotating shafts, a magnetic chuck and a base plate; wherein the cylindrical rotating shaft is between the magnetic chuck and the base plate; The distance between the centers of the rotating shafts of two cylinders is 200 mm. Others are the same as one of the specific embodiments 1 to 3.

Specific embodiment five: the difference between this embodiment and one of the specific embodiments one to four is: the method of using the angle fixture to grind in step three is: put the angle fixture on the broach grinding machine platform, put the block gauge into Under the left cylinder shaft of the angle fixture, make the E surface parallel to the machine platform, the height of the block gauge is 13.373mm, then place the cuboid on the magnetic chuck of the angle fixture, and then grind it with a bowl-shaped grinding wheel. Others are the same as one of the specific embodiments 1 to 4.

Embodiment 6: This embodiment differs from Embodiment 1 to Embodiment 5 in that the inspection method of the cusp size in Step 3 is as follows: use two Ф10 measuring rods to place on both sides of the inclined plane respectively, so that the left side of the measuring rod Tangent to the F surface, if the tip size is 58.632mm±0.01, the calculated distance between the two measuring rods should be 78.632mm±0.01, therefore, the outer micrometer only needs to measure the distance between the two measuring rods to meet the calculated size. Others are the same as one of the specific embodiments 1 to 5.

Adopt the following examples to verify the beneficial effects of the present invention:

Embodiment 1: A kind of processing method of double-slope radial standard block is carried out according to the following steps:

1. Forging rough

Forging a rectangular blank with a length of 306mm, a width of 85mm and a thickness of 30mm;

2. Milling

Mill the blank to a cuboid with a length of 300.6mm, a width of 80mm, and a thickness of 25.5mm, and the verticality of each surface is 0.1mm; then draw two oblique outlines of the standard block along the length direction on the upper surface of the cuboid, and record it as the upper outline E and the lower contour line B, then follow the lower contour line B, the upper contour line E and the standard milling slopes on both sides with a machining allowance of 0.3mm to obtain the lower slope B and the upper slope E; then heat treatment, and then sandblasting the surface , and then perform flat grinding, wherein the thickness of the cuboid is ground to 25 mm, and the lower slope B is ground to 0.3 mm, demagnetized, and cleaned;

3. Tool grinding machine

The left end face of the cuboid is recorded as the F face, and the F face is ground based on the flat ground lower slope B. The angle between the F face and the slope B is 91°55′1″;

4. Broach grinder

Use the angle fixture to grind the upper slope E, the slope of the upper slope E is 3.347mm/100, grind the steps on the upper slope E, the height of the steps is 0.23mm, the elevation of the steps is 80mm from the F surface, and grind the bottom surface of the steps The size from M to sharp point is 58.632mm±0.01, demagnetize, clean, and engrave, and it is completed.

In this embodiment, the material of the rectangular blank is 45# steel. The method of heat treatment in step 2 is: first heat in a medium temperature furnace at 820-840°C for 30 minutes, then put it in a water tank and cool it to 300-400°C, and then put it in an oil tank Cool to normal temperature, and finally put it into the tempering furnace for tempering at 560°C for 2 hours. The angle fixture in step 3 is composed of two cylindrical rotating shafts, a magnetic chuck and a base plate; the cylindrical rotating shaft is between the magnetic chuck and the base plate; the distance between the centers of the two cylindrical rotating shafts is 200mm; the grinding method of using the angle fixture is: Put the angle fixture on the broach grinding machine platform, put the block gauge under the left cylinder shaft of the angle fixture, make the E surface parallel to the machine platform, the height of the block gauge is 13.373mm, and then put the cuboid on the angle fixture On the magnetic chuck, and then grind with a bowl-shaped grinding wheel. The inspection method of the cusp size is: use two Ф10 measuring rods to place on both sides of the slope, so that the left side of the measuring rod is tangent to the F surface. If the cusp size is 58.632mm±0.01, after calculation, the distance between the two measuring rods The distance should be 78.632mm ± 0.01, therefore, the outer micrometer only needs to measure the distance between the two measuring rods to meet the calculated size.

In this embodiment, the radial standard block is ground and measured conveniently and quickly, and the standard block has high dimensional accuracy.

Claims (6)

1. A processing method of a double-slope radial standard block, characterized in that the processing method is carried out in the following steps: 1. Forging rough Forging a rectangular blank with a length of 306mm, a width of 85mm and a thickness of 30mm; 2. Milling Mill the blank to a cuboid with a length of 300.6mm, a width of 80mm, and a thickness of 25.5mm, and the verticality of each surface is 0.1mm; then draw two oblique outlines of the standard block along the length direction on the upper surface of the cuboid, and record it as the upper outline E and the lower contour line B, then follow the lower contour line B, the upper contour line E and the standard milling slopes on both sides with a machining allowance of 0.3mm to obtain the lower slope B and the upper slope E; then heat treatment, and then sandblasting the surface , and then perform flat grinding, wherein the thickness of the cuboid is ground to 25 mm, and the lower slope B is ground to 0.2-0.3 mm, demagnetized, and cleaned; 3. Tool grinding machine The left end face of the cuboid is recorded as the F face, and the F face is ground based on the flat-ground lower slope B. The angle between the F face and the slope B is 91°55′1″±20″; 4. Broach grinder Use the angle fixture to grind the upper slope E, the slope of the upper slope E is 3.347mm±0.01/100, grind the steps on the upper slope E, the height of the steps is 0.23mm±0.01, and the elevation of the steps is 80mm away from the F surface. Grinding the bottom surface of the step from M to the sharp point is 58.632mm±0.01, demagnetizing, cleaning, lettering, and it is completed. 2. The processing method of a kind of double slope radial standard block according to claim 1, characterized in that the material of the rectangular blank described in step 1 is 45# steel. 3. The processing method of a double-slope radial standard block according to claim 1, wherein the method of heat treatment in step 2 is: first heat in a medium-temperature furnace at 820-840°C for 30 minutes, and then put it in a water tank Cool to 300-400°C, then put it into an oil tank to cool to room temperature, and finally put it into a tempering furnace at 560°C for 2 hours. 4. the processing method of a kind of double-slope radial standard block according to claim 1 is characterized in that the angle fixture of step 3 is made up of two cylindrical rotating shafts, magnetic chuck and base plate; Wherein cylindrical rotating shaft is magnetic chuck and Between the bottom plates; the distance between the centers of the two cylinder shafts is 200mm. 5. the processing method of a kind of double-slope radial standard block according to claim 1, it is characterized in that the method utilizing angle fixture grinding in step 3 is: put angle fixture on the broach grinding machine platform, Put the block gauge under the left cylinder shaft of the angle fixture, make the E surface parallel to the machine platform, the height of the block gauge is 13.373mm, then put the cuboid on the magnetic suction cup of the angle fixture, and then grind it with a bowl-shaped grinding wheel cut. 6. The method of processing a double-slope radial standard block according to claim 1, wherein the inspection method of the cusp size in step 3 is as follows: two Ф10 measuring rods are respectively placed on both sides of the inclined plane, so that The left side of the measuring rod is tangent to the F surface. If the point size is 58.632mm±0.01, the calculated distance between the two measuring rods should be 78.632mm±0.01. Therefore, the outer micrometer only needs to measure the distance between the two measuring rods. The distance fits the computed size.