JB/T8084.1-2000 This standard is a revision of JB/T 8084.1-1999 "Precision of cold chamber die casting machines". The revised standard cancels the flatness requirements of the working surfaces of the moving and fixed seat plates; the parallelism inspection points between the working surfaces of the moving and fixed seat plates are increased; the list of precision tolerance values ​​is added and GB/T 17421.1-1998 is implemented. This standard specifies the geometric accuracy, inspection methods and inspection rules of cold chamber die casting machines. This standard is applicable to horizontal and vertical cold chamber die casting machines. This standard was first issued in March 1989 as GB 10926-89, and the standard number was adjusted to JB/T 8084-95 in 1995, and again adjusted to JB/T 8084.1-1999 in 1999. JB/T 8084.1-2000 Cold Chamber Die Casting Machine Accuracy JB/T8084.1-2000 Standard Download Decompression Password: www.bzxz.net

ICS77.180
Mechanical Industry Standard of the People's Republic of China
JB/T 8084.1—2000
Cold chamber die casting machinesw-Testing of theaceuracy
Released on September 28, 2008
National Bureau of Machinery Industry
Implementation on January 1, 2001
JB/T8084.1-2000bzxz.net
This standard is a revision of JB/T80B4.1-1999 cold chamber die casting machine precision standard. The main differences between this standard and the original standard after revision are: the flatness requirement of the working surface of the dynamic and fixed warehouse has been cancelled; - For the flatness inspection between the working surface of the dynamic warehouse and the fixed warehouse, the original 4-point inspection is changed to 12-point inspection; the flatness inspection method is implemented according to GB/T17421.1-1998; the list of tolerance values ​​is added,
This standard replaces JB/T8084.1-1999 from the date of implementation. This standard is issued and approved by the National Technical Committee for Standardization of Foundry Machinery. This standard was drafted by: Shanghai Machinery Factory, Jiyou Lingman Slow Press Research Institute, Ningbo Donglirui Machine Tool Co., Ltd., Shanghai Xiaodong Machinery Co., Ltd., Jiangsu Gangnan Machinery Co., Ltd., Zhuoxin Fu Refining Machinery Factory. The main drafters of this standard: Chen Yijiang, Gao Dazhen, Du Fengnian, Gu Chengting, Chen Jinjie, Meng Jieyi. This standard was first issued in March 1989 as G10926-89. In 1995, the standard number was adjusted to J10926-95, and in 1999 it was adjusted to J10926-95.
■ Scope
Machinery Industry Standards of the People's Republic of China
Precision of cold chamber die casting machine
Culd chamber die casting machine precision ... This standard specifies the geometric accuracy, inspection methods and control rules of die casting machines. This standard applies to horizontal and vertical cold chamber presses (hereinafter referred to as die casting machines). 2 Reference Standards
JB/T 8084.1—2000
Replaces JB/T 8084.1—1999
The provisions contained in the following standards shall constitute the text of this standard by reference in this standard. When this standard is revised, the versions indicated shall be valid. All standards will be revised. Parties using this standard should consider the possibility of using the latest versions of the following standards. BE7421.1—1999 Machine tool inspection Part 1: Geometric accuracy of machine tools under no-load or precision machining conditions 3 Accuracy and inspection methods 3.1 Main measuring tools for precision inspection 3.1.1 Belt inspection tools a) Flat plate; b) Flat ruler; c) Precision level; Indicator, shall comply with BE7421.1—1999 Record A 3.1.2 Special inspection tools are mainly used for inspection and testing. 3.2 Degrees and inspection methods
3.2.1 Parallelism between the movable seat plate and the fixed seat plate 3.2.1.1 Inspection
Make the movable seat plate in the closed position, refer to the method specified in 5.4.1.2.2 of 0B/r17421.1-1998, measure the distance readings of the corresponding points on the inner surface of the two seat plates at 12 measuring points, and calculate the difference between the maximum and minimum separation (see Figure 13.2.1.1 Tolerance
The measuring plate value should be less than the value in the table!
3.2.2 Length between the pull rods
3.2.2.1, Inspection method
Make the movable seat plate at the maximum opening position, according to the method specified in 5.4.1.2.3.1 of G/T17421.1-1998, measure the inner distance between the pull rods at 80mm from the movable and fixed seat plates (see Figure 2) Guohao Machinery Industry Bureau 2000-09.28 Approved 2001-01-01 Implementation
Measure length
> 25-40
>40-53
>631()
>160-250
>250-400
>400-630
≥1000~1600
≥1600--2 500
easteah
JB/7 8084.1--2000
Table 1 Length
3. 2. 2. 2 Tolerance
The measured value shall be less than the value in the table.
JR/T#094.1-2000
3.2.3 Conformity between the axis of the injection chamber and the axis of the injection rod 3.2.3.1 Inspection method
In the injection chamber hole, fix an indicator on the inspection device and measure the coincidence error of the AA and R·B sections of the injection rod according to the method specified in 5.4.4.2 of GB 10931.1-1999 respectively. The difference between the indicator readings on each section is 1/2 of the coincidence error on the section: see Figure 3 and Figure 4). 3.2.3.2 Tolerance
The measured value of the horizontal cold chamber die casting machine should be within the value in the table, and the measured value of the vertical cold chamber die casting machine should be less than the value in the table. 4 Inspection rules
4.1 Precision inspection shall be carried out after the H casting machine idle running test according to the provisions of Chapter 3. 4.2 Before the precision inspection, the press shall be installed on a suitable foundation and the press shall be protected. The control bar shall be adjusted vertically and horizontally until the reading of the level meter does not exceed 0.2/1000.
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