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US 2009/0266207 A1Published application
Safety device for machine tool
OwnerChih-Hui Chiu, Jun-Da Wu +1inventors
InventorsCHIH-HUI CHIU, JUN-DA WU, BO-JYUN SIAO
Life of this patent
Estimating the term…
Abstract
The safety device mainly contains a main controller, a detector, and an emergency braking member. The main controller contains a detection member connecting the detector, an alarm member producing visual or audible alarm, and a driving member for activating the emergency braking member to reverse or stop the motor of the machine tool. The detection member could be an electrostatic detection unit, or a capacitance detection unit, or a combination of the two. The detector is positioned on a top surface of a platform and in front of a saw of the machine tool. The detector could also be part of an axle of the saw so that the saw is effectively an extension of the detector and provides both cutting and safety functions.
Claims23
A safety device for a machine tool, comprising:
- an emergency braking member, when activated, reversing or stopping a motor of said machine tool;
- at least a detector;
- a main controller having a detection member connected to said detector, an alarm member, and a driving member for activating said emergency braking member;
- wherein said detector is capable of sensing an electrostatic charge of an object contacting said detector;
- said detection member is an electrostatic detection unit having a reference level;
- and, when said detector detects an electrostatic charge above said reference level, said electrostatic detection unit triggers said main controller to activate said emergency braking member via said driving member.
3 more elements
A safety device for a machine tool, comprising:
- an emergency braking member, when activated, reversing or stopping a motor of said machine tool;
- at least a detector;
- a main controller having a detection member connected to said detector, an alarm member, and a driving member for activating said emergency braking member;
- wherein said detection member is a capacitance detection unit detecting a capacitance value of said detector;
- and, when said detector has an abnormal capacitance value, said capacitance detection unit triggers said main controller to activate said emergency braking member via said driving member.
2 more elements
A safety device for a machine tool, comprising:
- an emergency braking member, when activated, reversing or stopping a motor of said machine tool;
- at least a detector;
- a main controller having a detection member connected to said detector, an alarm member, and a driving member for activating said emergency braking member;
- wherein said detector is capable of sensing an electrostatic charge of an object contacting said detector;
- said detection member contains an electrostatic detection unit having a reference level and a capacitance detection unit detecting a capacitance value of said detector;
- and, when said detector detects an electrostatic charge above said reference level and/or said detector has an abnormal capacitance value, said electrostatic detection unit and said capacitance detection unit trigger said main controller to activate said emergency braking member via said driving member.
3 more elements
A machine tool, comprising:
- a platform, a saw exposing from a top surface of said platform, and a motor driving said saw;
- an emergency braking member, when activated, reversing or stopping said motor;
- at least a detector;
- a main controller having a detection member connected to said detector, an alarm member, and a driving member for activating said emergency braking member;
- wherein said detector is capable of sensing an electrostatic charge of an object contacting said detector;
- said detection member is an electrostatic detection unit having a reference level;
- and, when said detector detects an electrostatic charge above said reference level, said electrostatic detection unit triggers said main controller to activate said emergency braking member via said driving member.
4 more elements
A machine tool, comprising:
- a platform, a saw exposing from a top surface of said platform, and a motor driving said saw;
- an emergency braking member, when activated, reversing or stopping said motor;
- at least a detector;
- a main controller having a detection member connected to said detector, an alarm member, and a driving member for activating said emergency braking member;
- wherein said detection member is a capacitance detection unit detecting a capacitance value of said detector;
- and, when said detector has an abnormal capacitance value, said capacitance detection unit triggers said main controller to activate said emergency braking member via said driving member.
3 more elements
A machine tool, comprising:
- a platform, a saw exposing from a top surface of said platform, and a motor driving said saw;
- an emergency braking member, when activated, reversing or stopping said motor;
- at least a detector;
- a main controller having a detection member connected to said detector, an alarm member, and a driving member for activating said emergency braking member;
- wherein said detector is capable of sensing an electrostatic charge of an object contacting said detector;
- said detection member contains an electrostatic detection unit having a reference level and a capacitance detection unit detecting a capacitance value of said detector;
- and, when said detector detects an electrostatic charge above said reference level and/or said detector has an abnormal capacitance value, said electrostatic detection unit and said capacitance detection unit trigger said main controller to activate said emergency braking member via said driving member.
4 more elements
Dependencies are inferred from the claim text.