JB 3105-1992 in English
VALIDWoodworking single head tenoning machine accuracy
- Issued on:1992-07-01
- Implemented on:1993-01-01
- File Format:PDF
- Delivery:RFQ
| Standard No: | JB 3105-1992 |
| Document status: | VALID |
| Title in English: | Woodworking single head tenoning machine accuracy |
| Title in Chinese: | 木工单头直榫开榫机精度 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | RFQ |
| Issued on: | 1992-07-01 |
| Implemented on: | 1993-01-01 |
| Professional Classification: | JB-Machinery |
| Related Keywords: | machine accuracy introduction analysis
increase moisture content control requirements implementation points geometric accuracy control accuracy requirements geometric accuracy axis end face runout ≤0.02mm working accuracy verification |
Introduction
Analysis of the core content of the standard
This standard specifies two technical indicator systems, namely the geometric accuracy and working accuracy of the woodworking single-head straight tenon mortising machine, and is applicable to the quality control of special equipment for hardwood tenon processing.
Comparison of key technical indicators
| Inspection items | Measurement length | Tolerance requirements (mm) | Key changes (Compared with JB 3105-82) |
|---|---|---|---|
| Workbench flatness | 630mm | 0.15-0.25 | Added diagonal direction detection |
| Tool axis radial runout | - | 0.02-0.03 | Subdivided horizontal/vertical tool axis standards |
| Tenon thickness uniformity | 100mm | 0.10 | Increase moisture content control requirements |
Implementation points
Geometric accuracy control
Before inspection, the machine tool installation level must be adjusted with a spirit level. The longitudinal/lateral readings must not exceed 0.10/1000. Pay special attention to the G4 tool axis runout test:
- Saw axis radial runout ≤0.03mm
- Vertical tool axis end face runout ≤0.02mm
Working accuracy verification
The test piece should be made of hard miscellaneous wood with a moisture content of ≤15%. When processing double tenons, the following must be ensured:
- Tenon width 8-20mm
- Tenon length 100mm
- Shoulder end face verticality ≤0.10/100
Technology evolution analysis
Compared with the 1982 version of the standard, the main improvements of the 92 version include:
- Add straightness detection in the diagonal direction of the worktable
- Refine the accuracy requirements of different tool axes (horizontal/vertical/center slot)
- Specify environmental control parameters such as moisture content of the specimen
- Introduce JB 4171 as the basic testing specification
Maintenance recommendations
Daily monitoring should focus on:
- Check guide rail straightness (G2 item) every week
- Check tool shaft radial runout every 500 hours
- After replacing the tool, the P1 working accuracy must be recalibrated
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