Some standard content:
ICS25.100.01
Machinery Industry Standard of the People's Republic of China
JB/T10231.2—2001
Tool product inspection methods
Part 2: Twist drills
Tool inspaction methods part2: twist drills2001-03-29 Issued
China Machinery Industry Federation
2001-07-01 Implementation
J8/T10231.2—2001
This standard was first issued on March 29, 2001. Foreword
This standard was issued and approved by the National Technical Committee for Tool Standardization. This standard was drafted by Chengdu Tool Research Institute. The main drafters of this standard are Shen Shichang and Ma Guobin. This standard is issued for the first time.
Machinery Industry Standard of the People's Republic of China
Tool inspection methods part:tw drillsJB/T10231.2—2001
This standard specifies the inspection methods and inspection instruments for various finished twist drills. These are not the only ones. This standard applies to the inspection of twist drills produced in accordance with GB 6135.1-6135.5, GB 1438.1~1438.4, GB 6138.1-613.2 and (IH17981).
Cited Standards
The texts contained in the following standards become the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised. Therefore, all parties to this standard should consider the possibility of using the latest versions of the following standards GB.T [438.I1996
GB/T 1438.2—1996
G8/T 1438.3—1996Www.bzxZ.net
GBT1438.41996
GR.T613511996
GB/T 1798 4 2000
IR/T102311-2001
3Testing basis
Hand-type twist drills Part 1: Types and sizes of Mohs-type twist drills Small-type twist drills Part 2: Types and sizes of long twist drills with a conical shank Part 3: Types and sizes of Mohs-type twist drills with extended shank Cone twist drills Part 4: Types and sizes of extra-long twist drills with a conical shank Straight twist drills Part 1: Types and sizes of small straight twist drills Straight shank twist drills Part 2: Types and sizes of short straight twist drills Straight shank twist drills Part 3: Types and sizes of twist drills with a handle Straight twist drills Part 4: Types and sizes of long straight twist drills Straight twist drills Part 5: Types of extra-long straight twist drills Drill types and sizes Stepped twist drills for drilling before tapping Part 1: Types and sizes of straight structure step-down twist drills Stepped twist drills for drilling before tapping Part 2: Types and sizes of Morse handle step twist drills Technical conditions for twist drills
Testing methods for tool products Part 1: General related product standards and drawings.
4 Testing methods and testing equipment
4.1 Appearance
The inspection of appearance shall be in accordance with the provisions of Chapter 4 of 1D10231.1-2001. 4.2 Surface roughness
The inspection of surface roughness shall be in accordance with the provisions of Chapter 5 of 1D10231.1-20011, China Machinery Industry Federation, 2001-03-29, approved 2001-07-01 Implementation
4.3. Working part diameter
JB/T 1023L,2-2(H01
1. The inspection of the working part diameter shall be in accordance with the heat setting of 10.1 in 10231.1-2001. 4.4 Working part diameter system
4.4.1 Inspection method
As shown in Figure 1, measure the diameter of the egg at three points, point A is at the tip. Point C is 5mm before the end of the blade, and point R is between points A and C. The inverse distance between AD and AC should meet the requirements. The value of the dimension is calculated based on the vertical difference of 10DLm, t
d-de(da)x100
C(A)
4.4.2 Pulling measuring instrument
Outer diameter is on the vernier caliper with a graduation value of 0.02mm (the position of the measuring plate detection point is measured 4.S Minimum value of drill core thickness
4.5.1 Detection method
Use a T-type vernier caliper at the drill tip to directly measure the minimum value of the drill core thickness. 4.5.2 Detection instrument
Pointed dry vernier caliper.
4. The slight axial movement of the working part on the shaft of the handle 4.6.1 Detection method
As shown in Figure 2, place the twist drill on the V-shaped money, and add a positioning block on the handle (add a positioning block between the end of the button handle twist drill and the positioning block. Steel ball], put the percentage gauge on the cutting edge at the tool tip, read the reading of the self-dividing indicator, rotate the twist drill 180°, read the reading of the percentage gauge on the cutting edge, take the absolute value of the difference between the two readings, and repeat the reverse operation at 1/4 lead from the tool tip to measure the diameter at 1/4 lead.
For chemical drills with a diameter not exceeding 2mm, a microscope can be used to measure the plate in Figure 2
4.6.2 Inspection equipment
JB102312-ZU01
V-shaped iron, self-dividing indicator, positioning block, magnetic table stand, flat plate, steel ball, tool microscope, 4.7 Symmetry of the drill core to the axis of the working part 4.1 Inspection method
·As shown in Figure 3, put the working part of the twist drill on the V-shaped notch, put the tip of the cutting edge with a positioning block, and put the percentage gauge on the cutting edge. At the bottom of the groove at the force tip, rotate the twist drill slightly left and right, read the minimum reading of the dial gauge, then rotate the twist drill t0°, read the percentage of the edge, and collect the absolute value of the difference between the two readings. Replace the drill at 1/4 lead from the tool tip, and measure the symmetry of the drill core at 14 lead. This method is applicable to twist drills with a diameter greater than 3mm, Figure 3
4.7.2 Measuring instruments
V-shaped iron, dial gauge, positioning block, force gauge stand, and plate. 4.8 Oblique runout of the axis of the working part 4.81 Detection method
As shown in Figure 4, place the working part of the twist drill on the V-shaped iron, with the tool tip against a positioning block, and place the dial gauge probe vertically against the cutting edge at the near corner, read the dial gauge reading, and then rotate the twist drill 180°, and take the percentage of the other edge. Count backwards from the dial gauge, take the absolute value of the difference between the two readings, for a twist drill with a diameter not exceeding 2 mm, it can be measured on a tool microscope. Figure 4. 4.8.2 Detector: V-shaped iron, dial gauge, positioning block, magnetic meter stand, flat plate, tool microscope. 4.9 Groove graduation difference 4.9.1 Detection method JB/T10231.2—2001 As shown in Figure 5, place the working part of the twist drill on the V-shaped notch; the small pointed transverse blade originally holds one positioning block, and the other positioning block is placed on the groove edge, the dial gauge probe touches the other inner edge, reads the dial gauge reading, and measures the difference on the other dog, reads the dial gauge reading, and takes the absolute value of the difference between the readings. This method is applicable to twist drills with a diameter of more than mm. Figure 5
4.9.2 Inspection tools
V-shaped iron, centrifugal force gauge, positioning block, vertical force gauge, flat plate. 4.10 Overall length and working part length
The overall length and working part length shall be inspected in accordance with the provisions of 10.1 in JB/10231.1-2001. 4.1 The inspection of twist drill with Morse handle
The inspection of Morse handle shall be in accordance with the provisions of Chapter 6 in JB/FE0231.1-2001. 4.13 Blade width
4.12.1 Inspection method
As shown in Figure 6, use a vernier caliper to measure the working part of the twist drill near the tip perpendicular to the threading direction. It can also be measured with a micrometer or a sub-meter under the head.
4.12.2 Testing equipment
Vernier caliper with a graduation value of 0.02 mm, pointed micrometer, microscope: 4.3 Back diameter
4.13.1 Testing method
As shown in the figure, use a caliper with a micrometer sub-plate at the working part of the twist drill near the cutting edge. 4. 13. 2 Testing equipment
Vernier caliper or sub-micrometer,
4.14 Twist drill top angle
4.14.1 Detection method
JR/T103122001
a) As shown in the figure, use a universal rat ruler to clamp the two cutting edges, and read the angle value when the deviation is the smallest. Figure name
b) Place the twist drill horizontally on the V-shaped iron, and the drill tip should be sharpened during the drill bit inspection. 1. Use the microscope eyepiece to check that the center of the angular line is the largest in the water half plane. Then overlap one ray of the angular line with the top angle, and then overlap it with the other ray. The measured value is the angular value. 4.[4.2 Testing instruments
Metric ruler (2” value), V-shaped drill, drill bit edge inspection instrument, tool microscope. 4.15 Angle of the outer diameter of the cutting edge
4. 15. 1 Testing instruments
As shown in Figure 9, place the twist drill horizontally on the V-shaped drill, align it with the center of the M-shaped line of the tool microscope (drill bit grinding inspection instrument), and then rotate the M-shaped line to make it tangent to the intersection of the back edge and the edge. The measured value is the back angle value. Figure 9
4. 15.2 Testing instruments
JB/T10231.2-2001
Tool microscope, V-shaped drill, drill bit grinding inspection instrument. 4.16 Bevel angle of the transverse edge
4. 16. 1 Detection method
As shown in Figure 10.
For twist drills with a diameter greater than 10 mm, a universal angle ruler can be used for measurement. When measuring, the fixed foot is not the cutting edge, and the bevel angle of the cross-edge can be read by rotating the ruler and the cross-edge.
It can be measured on a tool microscope. Use a 45° reflector to make the back of the twist drill horizontally projected, and the intersection of the image with the primary cutting edge coincide with the center of the cross-edge, and the longitudinal cross-edge of the eyepiece (I in Figure 11) coincides with the main cutting edge, and then rotate the mirror to make the longitudinal line coincide with the horizontal line. The value obtained is the bevel angle value. Figure 10
4.16.2 Detection equipment
Electricity negative ruler, V-shaped mirror, T-shaped magnetic mirror. 4.17 Spiral media
4. 17. 1 As shown in Figure 12, use a tool microscope to measure the egg, put the twist drill horizontally on the V-shaped iron, make the tracing line of the iron blade coincide with the axis of the twist drill, and then rotate the iron blade to make the angle between the iron blade and the blade tangent to the blade. Figure 12 4.17.2 Detector (microscope: V-shaped iron). 4.18 Material and hardness Detection of sealing material hardness The provisions of Article 11 of JS10231.1-2001 shall apply; the inspection of 4.19 surface treatment shall comply with the provisions of Article 15 of JS10231.1.-2001; the inspection of 4.20 marking and packaging shall comply with the provisions of Chapter 13 and Section 14 of JS10231.1-2001.
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