JB/T 9917.2-1999 This standard is a revision of ZBn J55 022-88 "Technical requirements for the manufacture and acceptance of multi-purpose grinders". This standard specifies and supplements standards such as GB/T 9061-1988 "General technical conditions for metal cutting machine tools". This standard is part of the JB/T 9917 "Multi-purpose grinder" series of standards, which includes the following two parts: JB/T 9917.1-1999 Multi-purpose grinder accuracy inspection JB/T 9917.2-1999 Multi-purpose grinder technical conditions This standard specifies the requirements for the manufacture and acceptance of multi-purpose grinders. This standard is applicable to multi-purpose grinders with a maximum workpiece rotation diameter of 200~250mm and a maximum worktable travel of 500mm. This standard was first published in 1979 as JB 2613-79, and was first revised in 1988 as ZB J55 022-88. This is the second revision. JB/T 9917.2-1999 Technical requirements for multi-purpose grinding machines JB/T9917.2-1999 Standard download decompression password: www.bzxz.net

ICS 25.080.50
Machinery Industry Standard of the People's Republic of China
JB/T9917.1~9917.21999
Multi-purpose grinder
1999-05-20 Issued
State Machinery Industry Bureau
Implementation on 2000-01-01
JB/T99172—1999
This standard is revised on the basis of ZBⅡJ55022—88 Technical Requirements for Manufacturing and Acceptance of Multi-purpose Grinders. This standard is a concretization and supplement of the standards such as ZB/T9061-1988 "General Technical Conditions for Metal Cutting Machine Tools". This standard is in line with the technical content of ZB/T9917 multi-pressure grinding machine series standards, which include the following two parts: ZB/T9917.1-1999 Multi-purpose grinding machine belt inspection ZB/T9917.2-1999 Multi-purpose grinding machine technical conditions This standard replaces ... This standard was proposed by the National Metal Cutting Machine Tool Standardization Technical Committee. This standard is under the jurisdiction of the National Metal Cutting Machine Tool Standardization Technical Committee. This standard was drafted by Ganyang Machine Tool Factory. This standard was first issued in 1979 as 26[3-.79, and was first revised as ZBnJ55022-88 in 1988. This is the second revision. 1 Scope
Machinery Industry Standard of the People's Republic of China
Multi-purpose grinder
Technical conditions
This standard specifies the requirements for the manufacture and testing of multi-purpose grinders, JB/T 9917.2—1999
Genesis ZBnJ55022—88
This standard applies to multi-purpose grinding machines with a maximum rotation diameter of 20u-250mm and a maximum working table diameter of 500mm: 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. This standard is valid for all editions after publication. All standard departments will be linked to each other. All parties using this standard should actively discuss the possibility of using the following new versions of the standard GB/T 103J—1995
G8/T 5226.11996
GT9611988
G15750[995
GB/16769—1947
[E40291985
JB/T55631991
JB/T98721999
JB/T9874—1999
9877—1999
JB/T917.1—1999
JB/T10031-1999
3 General requirements
Surface roughness index and its value
Industrial machinery and electrical equipment Part 1: General technical conditions General technical conditions for metal cutting machine tools| |tt||Metal cutting machine tools: general technical requirements for safety protection; Method for measuring sound pressure level of disc noise of metal cutting machine tools; Grinding machine wheel protection; Technical requirements for safety protection of metal cutting machine tools; Method for color coating of cone surface of metal cutting machine tools; Inspection and evaluation of metal cutting machine tools; General technical conditions for mechanical processing of workpieces of metal cutting machine tools; Technical conditions for assembly of waste metal cutting machines; Determination of the cleanliness of metal cutting machine tools
Multi-purpose grinders: electrical inspection
General technical requirements for hydraulic systems of metal auxiliary machine tools; When accepting the machine parts according to this standard, the remaining acceptance items in standards such as JB/T9061, JB/T9872, JB/T9874, etc. which are not integrated in this standard must be inspected at the same time.
4 Accessories and tools
4.1 The accessories and tools listed in Table 1 shall be supplied randomly. Approved by the Machinery Industry Bureau of Xuejia on May 20, 1999, 16
Implemented on January 0, 2000
Inner rat head
Grinding wheel can adjust
Diao bracket
Sand plate [“type
Left vehicle product meter
Center sight
Add axis (two types
Universal pliers
Lower plate and lower plate seat
Can adjust
For tooth positioning
Tailai grinding wheel
Grinding tool
JB/T9917.2—199y
Qiuzheng grinding wheel height
Connecting sand grid + Extraction
Installation of light.t partsWww.bzxZ.net
√ Acid wheel
Inner and outer circle
Accessories listed in Table 2 can be supplied according to the agreement.
Vacuum cleaner
Knife separation device
Giant permanent suction cup
Self-setting step-removable pad lock
5 Safety and health
The most abrasive dust
Dense grinding wheel
Installation of parts
Installation of machine
5.1 The grinding wheel protection cover shall comply with the provisions of 4029, 5.2 The safety protection shall comply with the provisions of 615760. :
1 piece each
Cool external disconnect card The disc should be installed with a grid for production measurement. It can be installed together with the grinding wheel chuck. 5.3 The electrical and filter pressure systems should meet the relevant requirements of GBT5226.1 and BT10051 respectively. 5.4 The machine tool noise should be tested according to GB/T[6769]. When the machine tool noise pressure measurement is carried out under the conditions of reverse idling without any parts, the noise level of the whole machine shall not exceed 83dB (A). 6 Machining and assembly quality. 1 The following important parts must be aged after rough machining: 1) body; 2) upper working table: 3) lower drag table: 4) vertical 6.2 The longitudinal guide rail of the machine tool should adopt the "sliding (rolling) guide" requirement of JB/T99172-1999. 6.3 The longitudinal and transverse guide rails of the machine tool should meet the requirements of "sliding (rolling) guide" requirements. 6. The following joints include the requirements of "relocation guide rail": a) the joint surface between the upper workbench and the lower workbench, b) the joint surface between the head frame and the head frame bottom plate, the head frame bottom plate, the tail frame, the left end tail frame and the moon frame bottom plate and the upper workbench d) the joint surface between the wheel frame body and the vertical sample; ) the connection surface of the tool grinding frame.
6.5 The following joint surfaces shall be tested according to the requirements of "particularly important fixed joint surfaces" a) The joint surface between the body and the bed seat; b) The joint surface between the bed and the bed; d) The joint surface between the column sleeve and the sliding insert; 6.6 The joint surface between the headstock spindle, the grinding wheel spindle, the frame sleeve, the center and the flange of the outer return grinding wheel shall be tested according to the requirements specified in JBT5563. The joint contact shall be close to the large end, and the contact length shall not be less than 80% of the working length. 6.7 The handwheel operating force shall be assessed according to Table 3:
Wheel type
Horizontal feed wheel
Coarse feed
J Operation direction
Moving wheel
6.8 The reverse idle travel of the horizontal feed belt fixed to the wheel shall not be tilted more than 10 "vertical point start handwheel
Cutting edge
6.9 The drive motor of the head frame, the grinding wheel frame (including the pulley) and the drive motor of the sleeve shall be dynamically balanced and corrected. Correction plate, the residual unbalance The double amplitude that causes perturbation is evaluated according to Table 4. Table 4
Motor installation part
Head frame, oil pump
Station wheel frame
According to the effect of the dynamic
10Hot JD/T9677 regulations to test cleanliness, among which the internal cleanliness of the wheel frame parts is tested according to the more quantitative method, and its impurities and dirt do not exceed 200mg
Machine tool idling test
7.1 Temperature rise test
[9917.2—1999
Cylinder bed The operation time is not less than 4 hours: after reaching the stable temperature, the temperature rise of the mother grinding wheel frame and the inner grinding head shaft bearing and the bed body shall not exceed the specification of Table 5. Install 5 according to the position of the grinding wheel frame dry shaft oil tank near the bearing Note: Internal return head: Check during installation. 7.2 Grinding wheel frame idle operation power value test Grinding wheel frame idle rotation rate should not exceed 15% of the specified index: Method Idle gear oil tank Internal Circular head: spindle hand
Climbing the machine near the bearing
【Move the frame to determine the operating power index, select the assembled 0 check wheel frame, and measure its no-load power. Take the average value as the index: 2 browse inspection time, average ton deduction motor itself power consumption. 7.3 Horizontal feed condition inspection
Continuously horizontally feed times according to the minimum scale change value, each feed error shall not exceed the minimum scale. The cumulative error of 1 feed shall not exceed 2 times of the minimum scale,
7.41.
Adjust the workbench speed to 0.1mmin, and use the indicator with a value of 0.mm to check within the maximum grinding length. The indicator should rotate evenly and continuously.
7.5 Test of the reciprocating speed difference of the workbench
At the maximum grinding length, when the working speed is about 1.1m/min, the reciprocating speed difference of the workbench shall not exceed 10%: the difference is calculated according to the formula ():
Wu: ,—
One is the reciprocating single-stroke time of the workbench respectively
7.6T. Test of the reversing accuracy of the workbench
1. The reversing position error of the workbench shall not exceed 0.04m at the same speed, and shall not exceed 0.20mL at different speeds. Test method:
1. Workbench speed: low speed is about 0.5mmip, medium speed is about 0.5mmip, Speed ​​is about 2m/min; 1 worktable stroke: 100-200mm;
Number of times: 5 times at the same speed and different speeds;
Gauge: 0.01mm indicating instrument,
Note: During inspection 1. The worktable stays between the two auxiliary plates for no more than 1\:8 Machine tool load test [spot check]
JB/T99172-1999
This series of machine tools does not perform "maximum torque" and "maximum cutting main force" tests, only the grinding wheel frame motor reaches the rated (or! specified" power test.
Workpiece: dial JA/T 9917.1-—1999 The speed of the test piece head frame specified in PI: medium speed;
Working speed: 0.5-2m/mim:
Horizontal feed: Feed evenly until the motor reaches the rated (or designed) power 9 Grinding failure inspection [spot check]
Inspect by cutting method: Specifications as shown in the card:
Parts: Grind the test piece specified in P1 of B/9917.1-19 between the original tips: Grinding wheel: Use the coarse grinding wheel supplied with the machine: headstock speed: medium speed;
T worktable trace: about 1.0m/min:
mold retraction: after the spark is removed, feed continuously for 5 times according to the small scale; the ratio of the removal to the start of the grinding should not be less than %. 1. Machine tool condition inspection
10! The beat inspection is carried out in accordance with the ruling of [B/T9917.1. 10.2B/T9917.1 G8 and G10 of the geometry pin are inspection items and should be inspected after the machine tool reaches a stable temperature. 10.31. When inspecting the accuracy, the grinding specifications are as follows: External circle before and after measurement: feed is 0.005mm1: no feed, 5 double-row guarantee, other control such as headstock connection, table speed, etc.;
Internal circle: according to the regulations;
Tool grinding: use the hand of the sharpening tool The wheel is used for compensation grinding, and the feed rate is 0.02. The workpiece reciprocating stroke shall not be more than 8 times. 10.4 When the sugar content is tested, the surface roughness of the test piece shall be checked. The surface roughness R shall not exceed the following specified values ​​(according to the provisions of GB 1031):
Grinding outside the center and on the chuck: 0.32μm: Grinding inner hole on the chuck:
Grinding tool surface:
0.63 μm.
10.5 This machine tool shall also be tested for grinding the long shaft. The test requirements are as follows: Test piece material: 45 pot, not too hard;
Test grinding specification: specified by the manufacturer:
The surface roughness of the test piece after grinding shall be in accordance with the provisions of GB 1031, and its R value shall not be greater than 0.63 μm. 20
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.