JB/T 10008-1999 This standard is a revision of ZB J42 006-87 "Measuring Worm". During the revision, only the editorial modifications were made according to relevant regulations, and the main technical content was not changed. This standard specifies the structural type and size, technical requirements, drawing markings, markings and packaging of measuring worms with accuracy levels of 1, 2 and 3. This standard is applicable to involute measuring worms with normal module mm=0.1~10mm and number of starts Z=1!3. The measuring worm is a reference measuring part and is used for double-sided gear meshing measuring instruments, single-sided gear meshing measuring instruments and gear overall error measuring instruments. This standard was first issued in 1987. JB/T 10008-1999 Measuring Worm JB/T10008-1999 Standard download decompression password: www.bzxz.net

[CS25.060.20
Machinery Industry Standard of the People's Republic of China
JB/T1000—1999
Measuring worm
Master worm
Published on May 20, 1999
National Bureau of Machinery Industry
Implemented on January 1, 2000
JBT10008-1999
This standard is formulated on the basis of "Measuring worm" of 4-7. This standard is consistent with the technical content of BJ42%-87, and is only re-edited according to relevant regulations. Annex A of this standard is the appendix of the standard. www.bzxz.net
This standard replaces ZB3420068 from the month of implementation. This standard is proposed and managed by the Technical Committee of Standardization of Measuring Instruments of Jinguoji. The drafting unit of this standard is Hanting Thread Grinding Machine Research Institute. The main drafter of this standard is He Xihe.
This standard was first issued in 1997.
Machinery Industry Standard of the People's Republic of China
Masterworm
JB/T10008-1999
Generation J42.00087
This standard specifies the structural form and size, technical requirements, drawing marking, marking and packaging of masterworms with accuracy levels of grade 1, grade 2 and grade 3.
This standard applies to dry-type modules, = 0.1~10mm, number of threads = 1-3 The involute pressure measuring rod (hereinafter referred to as the measuring worm) is the reference measuring element and is used for measuring the wheel absorption surface, single-sided coupling display and gear wall error measurement. 2
The technical standard adopts the following definitions.
2.1 Coupling line error 45: The vertical distance between the two nearest nominal coupling lines including the actual spiral line, see Figure 1. Nominal torque
2.2 Spiral line error: Within the upper working width of the measuring worm, the normal distance between the two nearest nominal spiral lines on the coaxial cylindrical surface of the worm indexing column, including the actual spiral line, see Figure 2. Actual spiral double ratio
Nominal k
Polyester
National Machinery Industry Bureau 19-05-21 Approved Screw Special Effect
2000-01-01 Implementation JB/T10008-1999 2.3 Shape error 4: The normal distance between the two nominal shapes within the toothed working part on the given cutting surface of the measuring plate, see Figure 3. 3 Structural form and size 3.1 The structural form of the auxiliary plate rod is shown in Figure 4 (the structure shown in the figure is for reference only). Use a ruler to measure the length L of the worm gear and the diameter of the measuring plate rod. 4. Measuring water consumption
20:25;
80:140
40:5070
.=0+2m
40:37.5:32.5;39;27.5,25:20
60;57.5;52.5;50:47.5:45;42.5: The measuring water is divided into three accuracy levels according to the use requirements, namely 1, 2 and 3 levels: 1 level has the highest accuracy and 3 level has the lowest accuracy. Technical requirements
5. The surface of the worm should not have scratches, rust, or other defects. 2. The worm teeth should not have grinding cracks or burns. 2
IBT100081999
5.3 The surface roughness of the center hole of the two end faces of the measuring cup should not exceed 0.100u5. The non-measuring teeth of the measuring mother worm at both ends and one end are wider than the measuring teeth. The addition (based on single tooth surface) is shown in 2. The non-tested female gear part should be marked.
Normal bearing number
5.5 The radial and end face runout of the worm shaft table shall not exceed 1. 5.6 The technical specifications of the worm shaft shall comply with the provisions in Table 3. Table
Method model teaching,
Material grade
Meanwhile line tolerance
Spindle damage tolerance
Note: The starting point of the meshing line should be in the middle of the maximum tooth width of the worm shaft. 5m to the left and right of the space. Drawing marking
0.01-0.03
>0.03-0.05
Tooth profile tolerance
On the measurement worm drawing, the accuracy grade and the standard code shall be marked respectively. The marking example is as follows: 2—JB/T10008
Standard code
Precision grade
Ladder and packaging||tt| |7.1 The measuring worm should be marked with
tooth surface wind value
name code Tw;
b) module;
number of heads:
d) dividing diameter
e) butterfly opening angle:
degrees;
g) serial number,
JBrT10008[999
1.2 The packaging of the measuring worm should be in good condition. The outer packaging should have the product name, manufacturer or registered trademark. The measuring worm should have a certificate of conformity, and the product certificate should have the standard code of the technical standard, product specifications, etc. 7.3
A1 Inspection conditions
A1.1 The ambient temperature is 20%±[%
A1.2 The whole measuring worm must be carefully cleaned. A? Inspection items, inspection methods and inspection number JB/T10008-1999
Appendix A
(Standard Record)
Inspection methods
Inspection items, inspection methods and inspection tools are shown in Table A1Table A1
Line error
Energy line error
Tooth shape error
Shaft bearing light blood effect
Not following the filter
Inspection and monitoring
Use the principle shown in Library AI or use standard gears on the single-sided coupling side for inspection. The starting point of the end should be in the middle position of the auxiliary measurement period. The left and right 5m range is shown in Figure AI. See Figure A1. Place the measuring rod between the two top tables of the measuring table, and fasten the special channel to the table surface. 1 Make the measuring head touch the rotating surface and end face of the shaft table respectively, and quickly rotate the measuring ruler toward the rod to observe the position change of the measuring table (such as the door light collection, Meng period, etc.). The single sleeping head is long and accurate (it can be used for deep shooting, and can be used for learning driving accuracy). The old limit flying sample is long and accurate. Figure A] Combined line error, spiral line error, tooth shape error measurement principle. 1 Tool
【Single discussion! Special measuring equipment
Lotus child table
Special table stand
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