CA2014339A1 - Control system and method for automatic adjustment of lathe components in response to temperature of log - Google Patents
Control system and method for automatic adjustment of lathe components in response to temperature of logInfo
- Publication number
- CA2014339A1 CA2014339A1 CA 2014339 CA2014339A CA2014339A1 CA 2014339 A1 CA2014339 A1 CA 2014339A1 CA 2014339 CA2014339 CA 2014339 CA 2014339 A CA2014339 A CA 2014339A CA 2014339 A1 CA2014339 A1 CA 2014339A1
- Authority
- CA
- Canada
- Prior art keywords
- log
- lathe
- curves
- temperature
- response
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Manufacture Of Wood Veneers (AREA)
Abstract
A veneer lathe apparatus control system and method are described for automatic adjustment of lathe components which engage the log during peeling in response to reduction of the log diameter and to changes in the surface temperature of the log. The lathe components which are automatically adjusted include the lathe knife pitch angle, the knife gap spacing from the nose bar, and the radial positions of backup idler rolls and of core drive rolls. A computer control system is employed for such automatic adjustment of the lathe components in response to control signals produced by a temperature sensor which senses the surface temperature of the log and by a lathe carriage position sensor whose output indicates the diameter of the log as it is being peeled. Adjustment curves selected by the computer, such as pitch angle profiles and knife gap curves, are stored as data tables in the data memory of the computer. These adjustment curves include families of curves for many species of wood with each family having curves of different log temperatures to provide offset temperature adjustments between adjacent curves for different temperature ranges.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/337,897 US4893663A (en) | 1988-11-28 | 1989-04-14 | Control system and method for automatic adjustment of lathe components in response to temperature of log |
US07/377,897 | 1989-04-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2014339A1 true CA2014339A1 (en) | 1990-10-14 |
CA2014339C CA2014339C (en) | 1999-09-21 |
Family
ID=23322481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2014339 Expired - Lifetime CA2014339C (en) | 1989-04-14 | 1990-04-11 | Control system and method for automatic adjustment of lathe components in response to temperature of log |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2014339C (en) |
-
1990
- 1990-04-11 CA CA 2014339 patent/CA2014339C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2014339C (en) | 1999-09-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |