GB/T 38759-2020 in English
VALIDMachine tools—Work holding chucks—Vocabulary
- Issued on:2020-04-28
- Implemented on:2020-11-01
- File Format:PDF
- Delivery:Via email within 5 business days
$670.00
| Standard No: | GB/T 38759-2020 |
| Document status: | VALID |
| Title in English: | Machine tools—Work holding chucks—Vocabulary |
| Title in Chinese: | 机床 卡盘 术语 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2020-04-28 |
| Implemented on: | 2020-11-01 |
| ICS Classification: | 25.060.20-Dividing and tool-workpiece holding devices |
| Chinese Classification: | J52-Machine tool assistive device and accessory |
| Professional Classification: | GB-National Standard |
| Related Keywords: | machine tools work
machine tool chucks machine tools chucks vocabulary introduction standard overview gb/t38759-2020 core chuck types chuck type structural |
| Related Topics: | term standard microdisk
Chuck GBT38759 GB/T 38759-2020 With chuck interface Lathe chuck machinery industry chuck coiling wire |
《GB/T 38759-2020机床 卡盘 术语》由TC22（全国金属切削机床标准化技术委员会）归口，TC22SC9（全国金属切削机床标准化技术委员会机床附件分会）执行，主管部门为中国机械工业联合会。
Introduction
Standard Overview
GB/T38759-2020 is equivalent to the ISO19719:2010 international standard, which specifies the terminology definition and classification system of machine tool chucks. The standard applies to the field of workpiece clamping technology for metal cutting machine tools and includes 5 major categories of terms:
- Clamping device types (32 chuck definitions)
- Chuck components (34 core components)
- Hydraulic/pneumatic parts (22 components)
- Clamping device accessories (10 types of auxiliary tools)
- General terms for clamping technology (103 key technical parameters)
Comparison of core chuck types
| Chuck type | Structural features | Applicable scenarios | Standard illustration |
|---|---|---|---|
| Self-centering chuck | Synchronous radial movement of chuck jaws | Conventional shaft parts processing | Figure 1/Figure 34 |
| Wedge-type hollow chuck | Inclined drive + center through hole | Continuous processing of long bars | Figure 1/Figure 32 |
| Hydraulic tension chuck | Medium pressure deformation clamping | Precision processing of thin-walled parts | Figure 12 |
| Six-jaw lever compensation chuck | Multi-jaw force compensation mechanism | High-speed cutting of heavy workpieces | Figure 19 |
Analysis of key technical parameters
1. Clamping force control
Standard clause 3.5.30 stipulates: Actual clamping force = initial clamping force × (1-centrifugal force loss rate). When the speed reaches the nominal speed (3.5.79), a typical chuck will lose 1/3 of the clamping force.
2. Accuracy indicators
- End face runout accuracy (3.5.39): ≤0.02mm (precision grade)
- Repeat positioning accuracy (3.5.80): ±0.005mm
- Chuck efficiency (3.5.13): ≥85% (wedge-type mechanism)
Implementation suggestions
- Selection basis: Prioritize Separation jaw self-centering chuck
- Maintenance points: Check the wear of the base jaw guide length (3.5.57) every 500 hours
- Safety regulations: The jaw limit pin (3.2.20) must be calibrated regularly
- Upgrade direction: Centrifugal force compensation chucks (3.1.3) are recommended for high-speed machining
Standard evolution
Compared with ISO19719:2010, this standard has the following major adjustments:
- Citing GB/T5900 series instead of ISO7021-7023
- Adding Chinese index (including English comparison of 103 terms)
- Deleting non-technical notes in international standards
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 20959-2025 in English
NC vertical turret
2025-08-29 -
GB/T 23291-2009 in English
Machine tools - Test conditions for self-centring，manually-operated chucks with one-piece jaws
2009-03-05 -
GB/T 28388.1-2012 in English
Swinging linkage milling head with axes A,C—Part 1:Testing of accuracy
2012-05-11 -
GB/T 9204-2008 in English
Dead centre
2008-08-11 -
GB/T 31396.1-2015 in English
Machine tools―Dimensions and geometric tests for self-centring chucks with two-piece jaws―Part 1:Manually operated chucks with tongue and groove type jaws
2015-05-15
