GB/T 39960-2021 English PDF

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GB/T 39960-2021: Straight-sided single-action mechanical power presses - Characteristics and dimensions
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39960-2021	189	Add to Cart	3 days	Straight-sided single-action mechanical power presses - Characteristics and dimensions	Valid

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Basic data

Standard ID: GB/T 39960-2021 (GB/T39960-2021)
Description (Translated English): Straight-sided single-action mechanical power presses - Characteristics and dimensions
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J62
Word Count Estimation: 10,157
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 39960-2021: Straight-sided single-action mechanical power presses - Characteristics and dimensions

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Straight-sided single-action mechanical power presses - Characteristicsand dimensions ICS 25.120.10 J62 National Standards of People's Republic of China Parameters and dimensions of closed single-action mechanical press anddimensions (ISO 9188.1993,Machinetools-Straight-sidedsingle-actionmechanical Released on 2021-03-09 2021-10-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the redrafting method to modify and adopt ISO 9188.1993 "Machine Tools 400kN~4000kN Closed Single Action Mechanical Pressure" Force machine parameters and dimensions". Compared with ISO 9188.1993, the technical differences of this standard and the reasons are as follows. ---The scope of application is expanded to 10000kN to adapt to the development of my country's closed single-action mechanical press industry; ---Modified the tensile pad force, changed Ft≈0.2Fn to Ft≈(0.1~0.2)Fn to adapt to the closed single-action mechanical press in my country Product design and selection (see 2.2); ---The parameter values of 5000kN, 6300kN, 8000kN, 10000kN specifications have been increased, and the tensile pad force Ft and the The parameter value of the material force Fk to guide the product design of my country's closed single-action mechanical press (see Table 1); ---Added three columns of parameter values to guide the product design of my country's closed single-action mechanical press (see Table 2); ---Added three columns of parameters and size values to meet the needs of my country's stamping process (see Table 3); --- Two columns of parameters and size values have been added to meet the needs of my country's stamping process (see Table 4); ---Added four columns of parameters and size values to adapt to the product design of my country's closed single-action mechanical press (see Table 5); --- Two columns of parameters and size values have been added to guide the product design of closed single-action mechanical presses in my country (see Table 6); ---Three columns of parameters and size values have been added to guide the product design of my country's closed single-action mechanical press and meet the needs of stamping technology (see Table 7). This standard was proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Forging Machinery Standardization Technical Committee (SAC/TC220). Drafting organizations of this standard. Jinan Foundry and Forging Institute Inspection and Testing Technology Co., Ltd., Yangli Group Co., Ltd., Zhejiang Yiduan Precision Machinery Co., Ltd., Rongcheng East China Forging Machine Co., Ltd., Zhongshan Shenglong Forging Machinery Co., Ltd., Shenzhen Guoji Instrument Co., Ltd., China South Aluminum Wheel Manufacturing (Guangdong) Co., Ltd., Foshan City, Guangdong Province, Quality and Technical Supervision Standards and Coding Office, Zhongnan Aluminum Wheel Manufacturing (Foshan) Co., Ltd. The company, Foshan Hezhongcheng Intelligent Technology Co., Ltd., and Foshan Sanyou Auto Parts Manufacturing Co., Ltd. The main drafters of this standard. Ma Liqiang, Mei Bizhou, Zhong Taisheng, Qiu Yuliang, Lu Weining, Pang Yan, Lun Yongtian, Gong Yue, Li Weicai, Meng Xianghua, weekend. Parameters and dimensions of closed single-action mechanical press

1 Scope

This standard specifies the parameters and dimensions of a closed single-action mechanical press with a nominal force range of 400kN~10000kN. This standard applies to single, double and four-point closed single-action mechanical presses.

2 Terms and definitions

The following terms and definitions apply to this document. 2.1 Nominalforce Fn The maximum force allowed on the slider within a certain distance before the bottom dead center. 2.2 Stretch cushion force bedcushionforce Ft The force corresponding to the nominal force, when the air pressure is 0.5MPa, Ft≈(0.1~0.2)Fn. 2.3 Knockoutforce Fk The force corresponding to the nominal force, Fk≈0.1Fn. 2.4 Nominalenergy Wn When the slider moves in a continuous stroke, the energy output by one stroke is related to the reduction of the rotation speed of the flywheel. Note. The nominal energy Wn is related to the nominal force Fn, the nominal force stroke hn and when there is a stretching pad, the stretching pad force Ft and the stretching pad stroke ht are related. Nominal energy The amount should generally be selected according to the working mode of the press. 2.5 Maximum mold height shutheight e1 When the stroke of the slider is at its maximum, the height of the mold assembly is adjusted to the upper limit and the slider is at the bottom dead center. distance. Note. Under normal circumstances, the height of the mold can be adjusted. The maximum mold height difference is 100mm. 2.6 The distance from the worktable to the bottom surface of the slider bedtoslidedistance e2 When the stroke of the slider is at its maximum, the height of the mold assembly is adjusted to the upper limit and the slider is at the bottom dead center. distance. ......

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