JB/T 3382.2-2000 Technical requirements for horizontal spindle and rectangular table surface grinders

JB/T 3382.2-2000 This standard is a revision of the original JBn 3382-83 "Technical requirements for manufacturing and acceptance of horizontal spindle and rectangular table surface grinders" based on GB/T 9061-1988 "General technical conditions for metal cutting machine tools", JB/T 9872-1999 "General technical conditions for machining of metal cutting machine tools", JB/T 9874-1999 "General technical conditions for assembly of metal cutting machine tools". This standard is part of the JB/T 3382 "Horizontal spindle and rectangular table surface grinder" series of standards. This series of standards includes the following two parts: JB/T 3382.1-2000 Horizontal Spindle and Reciprocating Table Surface Grinder Series JB/T 3382.2-2000 Horizontal Spindle and Reciprocating Table Surface Grinder Technical Conditions The standards that match this standard are: GB/T 4022-1983 Horizontal Spindle and Reciprocating Table Surface Grinder Accuracy GB/T 6469-1986 Horizontal Spindle and Reciprocating Table Surface Grinder Parameters JB/T 1579-1999 Precision Horizontal Spindle and Reciprocating Table Surface Grinder Accuracy Inspection JB/T 4096-1999 High Precision Horizontal Spindle and Reciprocating Table Surface Grinder Accuracy Inspection This standard specifies the manufacturing and acceptance requirements for horizontal spindle and reciprocating table surface grinders. This standard is applicable to machine tools with a worktable width of 125~800mm. Note: This standard was first issued in November 1983 as JBn 3382-83. In the 1999 standard review, it was not approved in time and was considered as natural elimination, so it has no replacement relationship with this standard. JB/T 3382.2-2000 Technical conditions for horizontal spindle and rectangular table surface grinders JB/T3382.2-2000 Standard download decompression password: www.bzxz.net

ICS25.080.50
Machinery Industry Standard of the People's Republic of China
JB/T3382.2-2000
Technical conditions for horizontal spindle and rectangular table surface grinders
Surface grinding machines with horizontal grinding Wheelspindeandreciprocatingtable-Specifications2000-04-17 Issued
National Machinery Industry Bureau
2000-09-01 Implementation
JB/T3382.2—2000
This standard is a revision of the original JBn3382-83 "Technical requirements for manufacturing and acceptance of horizontal spindle and reciprocating table surface grinders" based on GB/T9061—1988 "General Technical Conditions for Metal Cutting Machine Tools", JB/T9872-1999 "General Technical Conditions for Mechanical Processing Parts of Metal Cutting Machine Tools", and JB/T9874-1999 "General Technical Conditions for Assembly of Metal Cutting Machine Tools". Editorial changes were made to the original standard during the revision.
The main difference between this standard and the original JBn3382-83 is that the name is changed to "Technical Conditions for Horizontal Spindle and Reciprocating Table Surface Grinders". - Safety and health have relevant standard requirements, and the safety protection content has been cancelled. This standard is part of the JB/T3382 "Horizontal Spindle and Reciprocating Table Surface Grinder" series of standards. This series of standards includes the following two parts: JB/T33821-2000 Horizontal Spindle and Reciprocating Table Surface Grinder Series JB/T3382.2-2000
Horizontal Spindle and Reciprocating Table Surface Grinder
Standards matching this standard include:
GB/T4022-1983
Technical Conditions
Horizontal Spindle and Reciprocating Table Surface Grinder Accuracy
GB/T64691986
Horizontal Spindle and Reciprocating Table Surface Grinder Parameters
JB/T15791999 Precision Horizontal Spindle and Reciprocating Table Surface Grinder Accuracy Inspection JB/T4096-1999
High Precision Horizontal Spindle and Reciprocating Table Surface Grinder Accuracy Inspection This standard is proposed by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard is under the jurisdiction of the Grinding Machine Branch of the National Technical Committee for Standardization of Metal Cutting Machine Tools. The responsible drafting unit of this standard is Hangzhou Surface Grinding Machine Research Institute. This standard was first issued in November 1983. 1
1 Scope
Machinery Industry Standard of the People's Republic of China
Technical Conditions for Surface Grinding Machines with Horizontal Grinding Wheels Spindle and Reciprocating Table
Surface Grinding Madhines with Horizontal Grinding Wheels Spindle and Reciprocating Table Specifications This standard specifies the manufacturing and acceptance requirements for surface grinding machines with horizontal grinding wheels spindle and reciprocating table (hereinafter referred to as machine tools). This standard is applicable to machine tools with a worktable width of 125~800mm. 2 Referenced Standards
JB/T3382.2—2000
The provisions contained in the following standards constitute 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, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T4022—1983
GB/T9061—1988
JB/T1579—1999
JB/T3997—1994
JB/T4096—1999
JB/T9871—1999
JB/T9872—1999
JB/T9874—1999
JB/T9877—1999
JB/T10051—1999
3 General requirements
Precision of horizontal spindle and rectangular table surface grinders
General technical requirements for metal cutting machine tools||tt| |Precision horizontal axis and rectangular table surface grinder accuracy inspection Technical conditions for gray iron castings of metal cutting machine tools Accuracy inspection for high-precision horizontal axis and rectangular table surface grinder Accuracy classification of metal cutting machine tools
General technical conditions for machining parts of metal cutting machine tools Metal cutting machine tools
General technical conditions for assembly
Determination of cleanliness
Metal cutting machine tools
Metal cutting machine tools
General technical conditions for hydraulic systems
This standard is a concretization and supplement to GB/T9061, JB/T9872, JB/T9874 and other standards. When accepting machine tools according to this standard, the remaining acceptance items in the above standards that are not concretized by this standard must be inspected at the same time. 4 Accessories and tools
The accessories and tools listed in Table 1 should be supplied randomly. Approved by the State Bureau of Machinery Industry on April 17, 2000, and implemented on September 1, 2000
Grinding wheel balancing spindle
Grinding wheel dresser
Grinding wheel chuck
Special tools necessary for adjusting machine tools
Grinding wheel removal tools
JB/T3382.2—2000
Accessories and toolswwW.bzxz.Net
Note: The accessories and tools listed in the table can be increased or decreased according to the structural characteristics of the machine tool and the user agreement. 5 Processing and assembly quality
No diamond drill is included
5.1 The bed, column, slide, workbench, and grinding head body are important castings and must be aged after rough machining. Important castings of precision and high-precision machine tools must also be aged for the second time after semi-finishing. Other requirements shall be in accordance with the provisions of JB/T3997. 5.2 For the main parts that are easy to wear, such as the grinding head spindle and feed screw, wear-resistant measures corresponding to the service life should be taken. 5.3 The longitudinal moving guide pair of the worktable is an important guide pair, and wear-resistant measures such as wear-resistant cast iron, steel-inlaid guide rails, plastic-coated guide rails or high (medium) frequency induction quenching should be taken.
5.4 The longitudinal moving guide pair of the worktable, the lateral moving guide pair of the slide (or column, grinding head) and the vertical moving guide pair of the grinding head (or slide) should be assessed according to the requirements of "static pressure, sliding (rolling) guide rails". 5.5 The following joint surfaces should be assessed according to the requirements of "particularly important fixed joint surfaces": a) The joint surface between the column and the bed or slide; b) The joint surface between the detachable inlaid guide rail and its mating parts assessed according to "static pressure, sliding (rolling) guide rails". The reverse idle stroke of the vertical feed handwheel with a scale device should not exceed the requirements of Table 2. 5.6
Table 2 Reverse idle stroke of vertical feed handwheel with scale deviceMachine tool accuracy grade
Ordinary grade
Precision grade
High precision grade
Horizontal feed
Vertical feed
1When the minimum scale value of the vertical feed handwheel of ordinary machine tools is 0.005mm, its reverse idle stroke should not exceed 1/5r. 2For machine tools weighing more than 10t, the reverse idle stroke of the vertical feed handwheel should not exceed 15r. f
5.7Within the working stroke range, the operating force of the handwheel and handle should not exceed the provisions of Table 3. The operating force of the handwheel and handle should be uniform. 5.8Inspect the cleanliness of the inside of the grinding head components according to the method specified in JB/T9877. For sliding bearings, the cleanliness shall be inspected by weight, and its impurities and dirt shall not exceed 200mg (spot check); for rolling bearings, the cleanliness shall be inspected by visual inspection or touch 2
Machine weight
Frequent use
Not frequently used
JB/T3382.2—2000
Table 3 Handwheel and handle operating force
1 For handwheels and handles used more than 25 times per shift, their operating force shall be assessed according to the requirements of "frequent use"; for handwheels with automatic mechanisms, their operating force shall be assessed according to the requirements of "not frequently used" handwheels
2 Clamping handles and other handles with special requirements shall be assessed according to design requirements. Machine tool idle operation test
The machine tool shall be tested for continuous idle operation, and no failure shall occur during the entire operation process. The continuous operation time shall not be less than 4h, and the CNC machine tool shall not be less than 16h. During the test, the automatic cycle should include all functions and the entire working range, and the rest time between each automatic cycle should not exceed 1 minute.
6.1 When the spindle bearing reaches a stable temperature, the temperature and temperature rise measured at the spindle bearing housing or in the bearing system oil tank should not exceed the provisions of Table 4.
Table 4 Temperature and temperature rise of sliding and rolling bearings Bearing type
Sliding bearing
Rolling bearing
6.2 Temperature rise test of hydraulic system. After the system is operated at rated working pressure until the oil reaches thermal equilibrium, the temperature and temperature rise of the oil are checked. The temperature and temperature rise should not exceed the provisions of Table 5. Table 5 Temperature and temperature rise of hydraulic oil
Machine tool accuracy grade
Ordinary grade
Precision grade, high-precision grade
6.3 The grinding head feeds vertically. The error of each feed [calculated according to formula (1)] should not exceed 100% of the vertical feed amount. The cumulative error of 10 consecutive feeds [calculated according to formula (2)] should not exceed 20% of the 10 feed amounts. Feed the grinding head with the minimum feed amount during inspection. a.-6
Error of each feed -
Cumulative error of 10 consecutive feeds
Where: a,
Actual feed amount each time;
b—nominal feed amount each time.
The idle power of the externally driven grinding head should not exceed 15% of the idle power index of the grinding head. The idle power of the self-driven grinding head should not exceed 25% of the idle power index of the grinding head (spot check). Notes
JB/T3382.2—2000
1 To determine the idle power index of the grinding head, 10 sets of grinding heads with better assembly can be selected, and their idle power can be measured, and the average value can be taken as the index. 2 When measuring the idle power of the external drive grinding head, the idle power of the motor should be deducted. 6.5 The reciprocating speed difference of the longitudinal motion of the worktable is calculated according to formula (3) 1 and should not exceed the provisions of Table 6. 2t-t
Error-
×100%
Where: , — are the reciprocating single stroke time of the worktable respectively. Table 6 Reciprocating speed difference of longitudinal motion
Transmission type
Reciprocating speed difference
Double piston rod
Single piston rod
Add 10% to the theoretical calculated value
5 Reciprocating speed difference of grinding head, carriage or column in transverse continuous feed motion [calculated according to formula (3) should not exceed the provisions of Table 7 6.6
Table 7 Reciprocating speed difference of transverse motion
Transmission type
Reciprocating speed difference
Double piston rod and mechanical transmission
The uneven amount of transverse intermittent feed shall be specified in accordance with the design requirements. 6.7 The maximum punch-out amount at both ends of the longitudinal reciprocating motion of the worktable should not exceed the provisions of Table 8. Table 8 Maximum punch-out
Machine weight
Maximum punch-out of worktable
≤120
Single piston rod
Add 10% to the theoretical calculated value
≤150
Note: For machine tools with worktable speed greater than or equal to 35mmin, the maximum allowable punch-out shall be increased by 20% according to the corresponding value in the table. For machine tools using plastic guide rails, rolling guide rails, and hydrostatic guide rails, the maximum punch-out shall be specified in accordance with the design requirements. 6.8 Within the specified range of machine tool speed, the longitudinal continuous feed movement of the worktable and the lateral continuous feed movement of the carriage (or column, grinding head) shall be smooth, and there shall be no impact at high speed and no creep at low speed.
7 Machine tool load test (spot check)
7.1 Operation test of the machine tool bearing the maximum workpiece weight 7.1.1 When the machine tool is subjected to the operation test with the maximum workpiece weight, the machine tool shall operate smoothly and shall not creep at low speed. 7.1.2 After the machine tool is overloaded, the geometric accuracy specified in GB/T4022, JB/T1579, and JB/T4096 shall be rechecked, and appropriate accuracy recovery time shall be allowed according to the design requirements.
7.2 The test of the machine tool grinding head system reaching the maximum rated power is carried out by grinding method, and the test conditions are as follows: 4
JB/T3382.2—2000
a) Test piece: Test piece specified in item P2 of working accuracy inspection; b) Longitudinal moving speed of worktable: high speed or medium speed; C) Horizontal intermittent feed amount: not less than 1/4 of the grinding wheel width d) Vertical feed: feed evenly until the motor reaches the rated power specified in the design. Machine tool accuracy inspection
8.1 The machine tool accuracy inspection shall comply with the corresponding provisions of GB/T4022, JB/T1579, and JB/T4096. 8.2 The three geometric accuracy items G2b, G5, and G8, and the two working accuracy items P1 and P2 shall be inspected when the machine tool reaches the medium speed stable temperature. According to the characteristics of the machine tool, the inspection items can be appropriately increased. 8.3 Surface roughness of the test piece
When inspecting the working accuracy, the maximum allowable value of the surface roughness R of the test piece is: a) Ordinary machine tools: 0.63μm
b) Precision machine tools: 0.16μm;
c) High-precision machine tools: 0.08um.
8.4 The grinding specifications for the machine tool working accuracy inspection shall be in accordance with the manufacturing regulations. 9 Grinding efficiency test (spot check)
9.1 Test conditions
a) Test piece: the test piece specified in item P2 of the working accuracy inspection; b) Grinding wheel: the grinding wheel supplied randomly;
C) Longitudinal moving speed of the worktable: high speed; d) Horizontal intermittent feed amount: not less than 1/4 of the grinding wheel width; e) Vertical feed: after the test piece is ground flat, vertical feed is performed once for each horizontal single stroke, and the vertical feed amount is the minimum scale value of the scale each time, and the continuous feed is 10 times, and the horizontal double stroke is performed once without vertical feed. Test results
The ratio of the grinding amount to the nominal feed amount should not be less than 80% Note
1 The grinding efficiency test is not evaluated for high-precision horizontal spindle and rectangular table surface grinders, 2 The grinding efficiency test for high-power horizontal spindle and rectangular table surface grinders shall be in accordance with the design requirements. 5
Mechanical Industry Standard
Technical Specifications for Horizontal Spindle and Reciprocating Table Surface Grinder
JB/T33822—2000
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880×1230
1/16 Printing Sheet 1/2
Word Count 12000
First Edition in August 2000
Print Quantity 1-500
First Printing in August 2000
Price XXXXX Yuan
2000-019
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn0002—2000
a) Test piece: Test piece specified in item P2 of working accuracy test: b) Longitudinal moving speed of worktable: high speed or medium speed; C) Transverse intermittent feed amount: not less than 1/4 of the grinding wheel width d) Vertical feed: feed evenly until the motor reaches the rated power specified in the design. Machine tool accuracy test
8.1 The machine tool accuracy test shall comply with the corresponding provisions in GB/T4022, JB/T1579, and JB/T4096. 8.2 The three geometric accuracy items G2b, G5 and G8, and the two working accuracy items P1 and P2 shall be tested when the machine tool reaches the medium speed stable temperature. According to the characteristics of the machine tool, the test items can be appropriately increased. 8.3 Surface roughness of test piece
When inspecting the working accuracy, the maximum allowable value of the surface roughness R of the test piece is: a) Ordinary machine tool: 0.63μm
b) Precision machine tool: 0.16μm;
c) High-precision machine tool: 0.08um.
8.4 The grinding specification for the inspection of the working accuracy of the machine tool shall be in accordance with the manufacturing regulations. 9 Grinding efficiency test (spot check)
9.1 Test conditions
a) Test piece: the test piece specified in item P2 of the working accuracy inspection; b) Grinding wheel: the grinding wheel supplied randomly;
C) Longitudinal moving speed of the worktable: high speed; d) Horizontal intermittent feed amount: not less than 1/4 of the grinding wheel width; e) Vertical feed: after the test piece is ground flat, vertical feed is performed once for each horizontal single stroke, and the vertical feed amount is the minimum scale value of the scale each time, and the continuous feed is 10 times, and the horizontal double stroke is performed once without vertical feed. Test results
The ratio of the grinding amount to the nominal feed amount should not be less than 80% Note
1 The grinding efficiency test is not evaluated for high-precision horizontal spindle and rectangular table surface grinders, 2 The grinding efficiency test for high-power horizontal spindle and rectangular table surface grinders shall be in accordance with the design requirements. 5
Mechanical Industry Standard
Technical Specifications for Horizontal Spindle and Reciprocating Table Surface Grinder
JB/T33822—2000
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880×1230
1/16 Printing Sheet 1/2
Word Count 12000
First Edition in August 2000
Print Quantity 1-500
First Printing in August 2000
Price XXXXX Yuan
2000-019
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn0002—2000
a) Test piece: Test piece specified in item P2 of working accuracy test: b) Longitudinal moving speed of worktable: high speed or medium speed; C) Transverse intermittent feed amount: not less than 1/4 of the grinding wheel width d) Vertical feed: feed evenly until the motor reaches the rated power specified in the design. Machine tool accuracy test
8.1 The machine tool accuracy test shall comply with the corresponding provisions in GB/T4022, JB/T1579, and JB/T4096. 8.2 The three geometric accuracy items G2b, G5 and G8, and the two working accuracy items P1 and P2 shall be tested when the machine tool reaches the medium speed stable temperature. According to the characteristics of the machine tool, the test items can be appropriately increased. 8.3 Surface roughness of test piece
When inspecting the working accuracy, the maximum allowable value of the surface roughness R of the test piece is: a) Ordinary machine tool: 0.63μm
b) Precision machine tool: 0.16μm;
c) High-precision machine tool: 0.08um.
8.4 The grinding specification for the inspection of the working accuracy of the machine tool shall be in accordance with the manufacturing regulations. 9 Grinding efficiency test (spot check)
9.1 Test conditions
a) Test piece: the test piece specified in item P2 of the working accuracy inspection; b) Grinding wheel: the grinding wheel supplied randomly;
C) Longitudinal moving speed of the worktable: high speed; d) Horizontal intermittent feed amount: not less than 1/4 of the grinding wheel width; e) Vertical feed: after the test piece is ground flat, vertical feed is performed once for each horizontal single stroke, and the vertical feed amount is the minimum scale value of the scale each time, and the continuous feed is 10 times, and the horizontal double stroke is performed once without vertical feed. Test results
The ratio of the grinding amount to the nominal feed amount should not be less than 80% Note
1 The grinding efficiency test is not evaluated for high-precision horizontal spindle and rectangular table surface grinders, 2 The grinding efficiency test for high-power horizontal spindle and rectangular table surface grinders shall be in accordance with the design requirements. 5
Mechanical Industry Standard
Technical Specifications for Horizontal Spindle and Reciprocating Table Surface Grinder
JB/T33822—2000
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880×1230
1/16 Printing Sheet 1/2
Word Count 12000
First Edition in August 2000
Print Quantity 1-500
First Printing in August 2000
Price XXXXX Yuan
2000-019
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn000
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