机械加工余量是为了保证锻件经机械加工后达到图纸要求的尺寸和表面质量,在锻造时预先预留的金属层厚度。该余量确保加工后尺寸和粗糙度合格,具体数值根据锻件尺寸和形状在规定标准中确定。
| 标准号 & 类别 | 标准名称 | 发布 |
|---|---|---|
| GB/T 12362-2016 规范 |
Steel die forgings—Tolerance and machining allowance
公差等级 |
2016-12-13 国家市场监督管理总局 |
| GB/T 21469-2008 试验 |
Machining allowances and tolerances for steel open die forgings on hammer.General requirement
自由锻件 |
2008-02-28 国家市场监督管理总局 |
| GB/T 21470-2008 试验/规范 |
Machining allowances and tolerances for steel open die forgings on hammer.Disks,columns,rings and seamless cylindrical sleeves
自由锻件 |
2008-02-28 国家市场监督管理总局 |
| GB/T 32254-2015 规范 |
Precision hot forging of straight bevel gear—General specifications
|
2016-07-01 国家市场监督管理总局 |
| GB/T 6414-2017 规范 |
Castings.Dimensional tolerances and geometrical tolerances and machining allowances
|
2017-12-29 国家市场监督管理总局 |
| GOST 30552-1998 规范 |
Round billets (non-machined axles) of railway wheels for 1520 mm gauge line. Allowances and tolerances
车轴 |
1998 俄罗斯标准局 |
| HB 6077-2008 规范 |
Tolerances and machining allowances of die forgings
公差等级 模锻件 |
2008-03-17 行业标准-航空 |
| HB 6103-2004 规范 |
Dimensional tolerances and machining allowances of castings
|
2004-09-01 行业标准-航空 |
| HB 6587-1992 规范 |
Machining Allowance and Dimensional Tolerance of Free Forgings on Hammer
|
1992-10-04 行业标准-航空 |
| JB/T 15617-2026 规范 |
Steel cross wedge rollings—Tolerance and machining allowance
|
2026-06-01 行业标准-机械 |
| JB/T 9179.1-2013 规范 |
Machining allowances and tolerances of open die forgings on hydraulic press.Part 1: General requirements
自由锻件 |
2013-12-31 行业标准-机械 |
| JB/T 9179.2-2013 规范 |
液压机上钢质自由锻件机械加工余量与公差 第2部分:圆轴、方轴和矩形截面类 Machining allowances and tolerances of open die forgings on hydraulic press.Part 2: Round shaft, square shaft and rectangular cross-section
自由锻件 |
2013-12-31 行业标准-机械 |
| JB/T 9179.3-2013 规范 |
Machining allowances and tolerances of open die forgings on hydraulic press.Part 3: Stepped shaft
|
2013-12-31 行业标准-机械 |
| JB/T 9179.5-2013 规范 |
Machining allowances and tolerances of open die forgings on hydraulic press.Part 5: Short round shaft
液压机 |
2013-12-31 行业标准-机械 |
| JB/T 9179.6-2013 规范 |
Machining allowances and tolerances of open die forgings on hydraulic press.Part 6: Die block
|
2013-12-31 行业标准-机械 |
| JB/T 9179.7-2013 规范 |
Machining allowances and tolerances of open die forgings on hydraulic press.Part 7: Cylinder
|
2013-12-31 行业标准-机械 |
| JIS B 0403:1995 ERRATUM 1:2014 规范 |
ERRATUM
|
2014-04-03 日本工业标准调查会 |
| QB/T 3538-1999 规范 |
General specification for steel forgings for sewing machines
|
1999-1-1 行业标准-轻工 |
| T/CCMI 11-2021 规范标准 |
Machining Allowance and Tolerance of Large Hot Rolled Ring Forgings
|
2021-02-05 中国团体标准 |
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