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GB/T 22055.2-2008 English PDF

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GB/T 22055.2-2008: Microscopes -- Screw threads for objectives and related nosepieces -- Part 2: Screw thread type M25×0.75mm
Status: Obsolete
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 22055.2-2008English194 Add to Cart 3 days [Need to translate] Microscopes -- Screw threads for objectives and related nosepieces -- Part 2: Screw thread type M25×0.75mm Obsolete GB/T 22055.2-2008

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Basic data

Standard ID GB/T 22055.2-2008 (GB/T22055.2-2008)
Description (Translated English) Microscopes -- Screw threads for objectives and related nosepieces -- Part 2: Screw thread type M25��0.75mm
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard N32
Classification of International Standard 37.020
Word Count Estimation 5,548
Date of Issue 2008-06-20
Date of Implementation 2009-01-01
Adopted Standard ISO 8038-2-2001, IDT
Regulation (derived from) Announcement of Newly Approved National Standards No. 11 of 2008 (No. 124 overall)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the connection is different from the standard RMS microscope objective and nosepiece M25 threaded size.

GB/T 22055.2-2008: Microscopes -- Screw threads for objectives and related nosepieces -- Part 2: Screw thread type M25×0.75mm


---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.
Microscopes Screw threads for objectives and related nosepieces Part 2. Screw thread type M25 × 0.75mm ICS 37.020 N32 National Standards of People's Republic of China GB/T 22055.2-2008/ISO 8038-2.2001 Microscope objective thread Part 2. M25 × 0.75 m1 m1 type objective lens thread (ISO 8038-2.2001, IDT) Posted 2008-06-20 2009-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 22055 "microscope objective thread" is divided into two parts. --- Part 1. RMS objective thread type (4/5in × 1/36in); Part --- Article 2. M25 × 0.75mm type objective thread. This section GB/T 22055 "microscope objective thread" in Part 2 of this part identical with ISO 8038-2.2001 "microscope Lens thread - Part 2. M25 × 0.75mm type objective thread "(in English). This section is equivalent translation ISO 8038-2.2001. For ease of use, this section made the following editorial changes. --- "This part of ISO 8038" with the words "GB/T 22055 in this section"; --- Delete international standards foreword. This part is proposed by China Machinery Industry Federation. This part of the National Standardization Technical Committee on Photonic and Optical Science (SAC/TC103) centralized. This section is responsible for drafting unit. Shanghai Polytechnic University, Shanghai Institute of Optics instruments. Participated in the drafting of this section. Nanjing Jiangnan Yong new Optical Co., Ltd., Guangzhou, Guangdong significantly Optical Instrument Co., Ltd., Ningbo Huaguang fine Dense Instrument Co., Ltd., Zhejiang Jiang Shunyu Group Co., Ltd., Wuzhou Oka optical instrument company, Ningbo Yongxin Optics Co., wheat Keao Di Industrial Group Co., Ltd. and Phoenix Optical Holdings Limited. The main drafters of this section. Zhang Hui Yin, Hu Yu. This section first release. GB/T 22055.2-2008/ISO 8038-2.2001 Microscope objective thread Part 2. M25 × 0.75 m1 m1 type objective lens thread

1 Scope

GB/T 22055 provisions of this part of the coupling of the microscope objective and the objective is different from the RMS converter standard of M25 type thread size. Note. The system consists of a special eyepiece, objective lens and tube lens component (for example. infinity corrected optical systems) are usually corrected like poor, and therefore by a Eyepiece tube lens or a combination of the objective lens and the other vendors manufacture a manufacturing firm, even meets the provisions of this section, may still bring magnification Errors and/or image quality is reduced.

2 dimensions and tolerances

The basic size M25 type thread, dimensions and tolerances shall comply with the limits in Table 1, Table 2 and Figure 1 of the regulations. Table 1 thread basic dimensions Name Code Value Thread angle α 60 ° P 0.75mm pitch H 0.65mm high triangular base Nominal diameter D 25mm Table 2 Size Limits and tolerances in millimeters The inner diameter of the outer diameter size diameter Between the inner and outer thread Calculation of gap Coordinate tolerance tolerance Screw thread length internal thread External thread maximum Least maximum Least 24.978 24.838 D2 24.663 24.513 24.491 24.379 D1 24.378 24.188 Minimum clearance 0.022 Maximum clearance 0.284 +0.150 -0.022 -0.134 0.150 0.112 5.0 5.0 GB/T 22055.2-2008/ISO 8038-2.2001

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