GB/T 12759-1991 PDF EnglishUS$175.00 · In stock · Download in 9 seconds
GB/T 12759-1991: Double-circular-arc tooth profile of basic rack for cylindrical gears Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
Similar standardsGB/T 12759-1991: Double-circular-arc tooth profile of basic rack for cylindrical gears---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT12759-1991GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA UDC 621.833.1 J 17 GB 12759-91 Double-circular-arc tooth profile of basic rack for cylindrical gears 双圆弧圆柱齿轮 基本齿廓 Issued on: MARCH 22, 1991 Implemented on: JANUARY 01, 1992 Issued by. State Bureau of Quality and Technical Supervision Table of Contents1 Subject content and scope of application... 3 2 References... 3 3 Codes for basic tooth profile size parameters... 4 4 Shape and size parameters of basic tooth profile... 4 Annex A (supplement) Side clearance... 6 Annex B (reference) Main parameters and parameter calculation formula... 7 Double-circular-arc tooth profile of basic rack for cylindrical gears1 Subject content and scope of applicationThis Standard specifies the basic tooth profile of double circular arc cylindrical gears, that is, the tooth profile of the basic rack in the normal plane. This Standard applies to double-circular-arc cylindrical gears with normal module mn = 1.5~50 mm and their transmission.2 ReferencesGB 3374, Basic terminology of gears GB 1840, Modules of cylindrical gear with circular arc profiles GB 2821, Symbols for gear geometrical data3 Codes for basic tooth profile size parameters4 Shape and size parameters of basic tooth profileThe shape and size parameters of the basic tooth profile of double-circular-arc cylindrical gears are as specified in the following figure and table. Pressure angle Full tooth height Tooth height Tooth root height Radius of the arc of the convex tooth profile Concave tooth profile arc radius Convex tooth profile center displacement Concave tooth profile center displacement Convex tooth profile center offset Concave tooth profile center offset Chordal tooth thickness at the convex tooth contact point Distance from contact point to pitch line Distance from the tangent point of the transition arc and the convex tooth arc to the pitch line Distance from the intersection of the transition arc and the concave tooth arc to the pitch line Groove width at the contact point of the concave teeth Chordal tooth thickness at the concave tooth contact point Convex tooth process angle Concave tooth process angle Transition arc radius Radius of tooth root arc Distance from the tangent point of the tooth root arc and the concave tooth arc to the pitch line ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 12759-1991 be delivered?Answer: The full copy PDF of English version of GB/T 12759-1991 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 12759-1991_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 12759-1991_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 12759-1991 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.How to buy and download a true PDF of English version of GB/T 12759-1991?A step-by-step guide to download PDF of GB/T 12759-1991_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 12759-1991". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
