A band saw machine includes a working platform, a cutting machine, a vertical displacement element causing the cutting machine to move vertically, a height sensor and a central processor. The working platform includes a reference plane for placing a workpiece. The cutting machine includes a driving wheel, a driven wheel, a band saw wound on the driving wheel and the driven wheel, and a motor that electrically drives the driving wheel. The band saw includes a starting cutting tooth and a processing cutting tooth sequentially arranged. The height sensor detects a starting cutting point of the workpiece farthest from the reference plane. The central processor receives information of a position of the starting cutting point, and controls a displacement speed of the vertical displacement element and a first rotational speed of the motor to cause the starting cutting tooth to first cut at the starting cutting point.

A method of cutting a workpiece with a band saw includes rotating, with a band saw machine, a blade about a central longitudinal axis. The method also includes supporting a back edge of the blade during the rotating with a back support and a first lateral side edge with a first lateral side support. The method also includes monitoring, with a first sensor, a first level of force exerted against the back support and, with a second sensor, a second level of force exerted against the first lateral side support. The method also includes moving the blade along the axis during the rotating. The method also includes dynamically controlling, with a computing device, the band saw machine during the moving in response to at least one of the first level of force and the second level of force.

A method of cutting a workpiece with a band saw includes rotating, with a band saw machine, a blade about a central longitudinal axis. The method also includes supporting a back edge of the blade during the rotating with a back support and a first lateral side edge with a first lateral side support. The method also includes monitoring, with a first sensor, a first level of force exerted against the back support and, with a second sensor, a second level of force exerted against the first lateral side support. The method also includes moving the blade along the axis during the rotating. The method also includes dynamically controlling, with a computing device, the band saw machine during the moving in response to at least one of the first level of force and the second level of force.

A band saw including a housing, a motor, a drive pulley configured to receive torque from the motor, and a plurality of driven pulleys rotatably coupled to a plate, in which the plate is coupled to the housing for sliding movement. The band saw further includes a cavity within the housing and located between the drive pulley and the plurality of driven pulleys and an endless saw blade wrapped around the drive pulley and the plurality of driven pulleys. A first of the driven pulleys is rotatable about a first axis oriented perpendicular to the plate. A second of the driven pulleys is rotatable about a second axis that is obliquely oriented relative to the plate to impart a twisting movement to the saw blade about an oblong path defined by the saw blade, prior to the saw blade passing through the cavity.

A band saw including a housing, a motor, a drive pulley configured to receive torque from the motor, and a plurality of driven pulleys rotatably coupled to a plate, in which the plate is coupled to the housing for sliding movement. The band saw further includes a cavity within the housing and located between the drive pulley and the plurality of driven pulleys and an endless saw blade wrapped around the drive pulley and the plurality of driven pulleys. A first of the driven pulleys is rotatable about a first axis oriented perpendicular to the plate. A second of the driven pulleys is rotatable about a second axis that is obliquely oriented relative to the plate to impart a twisting movement to the saw blade about an oblong path defined by the saw blade, prior to the saw blade passing through the cavity.

A sawmill comprising first and second clamp members for clampingly engaging opposite sides of a log or log cant. A trolley includes the second clamp member. For moving the trolley cross-wise of the sawmill base, a threaded rotatable rod, to which a handle is attached, extends cross-wise of the base. The trolley includes a pair of walls which have a pair of aligned vertically oblong apertures respectively for receiving the rod. A half nut is fixedly attached to a bottom of one of the apertures and has threads which mate with threads on the rod so that the rod can threadedly engage the half nut. The apertures are sized such that the trolley can be tilted so that the threads of the rod and the half nut can be disengaged and the trolley slid along the rod to an approximate position for clampingly engaging the second clamp member to the log or log cant, then, with the trolley positioned upright and the threads of the rod and the half nut re-engaged, the handle can be turned to apply clamping force by the second clamp member to the log or log cant.

A sawmill comprising first and second clamp members for clampingly engaging opposite sides of a log or log cant. A trolley includes the second clamp member. For moving the trolley cross-wise of the sawmill base, a threaded rotatable rod, to which a handle is attached, extends cross-wise of the base. The trolley includes a pair of walls which have a pair of aligned vertically oblong apertures respectively for receiving the rod. A half nut is fixedly attached to a bottom of one of the apertures and has threads which mate with threads on the rod so that the rod can threadedly engage the half nut. The apertures are sized such that the trolley can be tilted so that the threads of the rod and the half nut can be disengaged and the trolley slid along the rod to an approximate position for clampingly engaging the second clamp member to the log or log cant, then, with the trolley positioned upright and the threads of the rod and the half nut re-engaged, the handle can be turned to apply clamping force by the second clamp member to the log or log cant.

Disclosed is a cutting apparatus and method of cutting an insulative material. Said insulative material may be either flexible or rigid in nature. The insulative material is cut via a passive cutting wheel driven across a platen and engaged to a stationary drive belt about the passive cutting wheel axis. Engagement of the stationary drive belt with the passive cutting wheel axis results in a turning of the passive cutting wheel.

According to one implementation, a machining apparatus includes an electromotive saw and an attaching structure. The electromotive saw cuts off a workpiece to be machined. The attaching structure attaches the saw to an arm of a robot. Further, according to one implementation, a machining method is provided. In the machining method, a machined product is manufactured by processing a composite material or a honeycomb structure with a cutting tool attached to an arm of a robot. Further, according to one implementation, a machining method is provided. In the machining method, a machined product is manufactured by processing a workpiece to be machined with a cutting tool attached to an arm of a robot. The workpiece is processed along a shape of a jig for setting the workpiece. The workpiece is processed with contacting a guide with the jig. The guide is attached to the arm.

According to one implementation, a machining apparatus includes an electromotive saw and an attaching structure. The electromotive saw cuts off a workpiece to be machined. The attaching structure attaches the saw to an arm of a robot. Further, according to one implementation, a machining method is provided. In the machining method, a machined product is manufactured by processing a composite material or a honeycomb structure with a cutting tool attached to an arm of a robot. Further, according to one implementation, a machining method is provided. In the machining method, a machined product is manufactured by processing a workpiece to be machined with a cutting tool attached to an arm of a robot. The workpiece is processed along a shape of a jig for setting the workpiece. The workpiece is processed with contacting a guide with the jig. The guide is attached to the arm.