摘要:
In a method, when using a single-grip harvester head for felling and processing trees, of controlling the press power which, by means of a limbing knife assembly (6), is exerted on a stem (3) which is horizontally fed through th head with its butt end first, the diameter of the stem is measured and the press power is reduced in accordance with a control diagram as the diameter decreases during the feeding. The measured diameter values are registered, and each measured diameter value is compared with a predetermined diameter value which is selected from the diameter values of the stem (3) which are previously registered during the feeding of the stem. If a measured diameter value is found to equal or be greater than this predetermined diameter value, the press power is increased to a corrective power value, which is maintained until a later measured diameter value falls below a reference value.
摘要:
A method of measuring amount of wood (13) in a rotating barking drum (1). By means of a transducer (11), the distance of the level of the wood bed (13) in the drum is measured through an opening or openings (7) of the drum.
摘要:
A goniometer comprising a rotor and a support base having therebetween three or four balls or rollers constrained to follow arcuate paths to provide rotation of the rotor, relative to the support base, about an axis of rotation external to the rotor, the balls being constrained to be spaced apart in at least two dimensions to ensure a three point spaced contact with the rotor and the support base.
摘要:
An apparatus for aligning a longitudinal edge of a flexible and continuously longitudinally moving web has a support having a longitudinally nondisplaceable face extending transversely across and immediately adjacent the edge and an alignment element having a plurality of parallel and elongated formations engageable with the web. An actuator displaces the element between an aligning position with the formations extending at an acute angle to the edge, pressing the web against the support face, and urging the moving web transversely outward at the edge and a standby position with the formations out of operative engagement with the web.
摘要:
A wire bonding apparatus and method in which an axial center of a bonding tool is moved to the vicinity of a near reference member, laser diodes are sequentially lit, images of the reference member and bonding tool in the horizontal directions are acquired by a position detection camera, and amounts of deviation between the tool and the reference member are measured. Then, the position detection camera is caused to approach the reference member, and amounts of deviation between the optical axis of the position detection camera and the reference member are measured by the position detection camera. The accurate offset amounts are determined from the measured values and amounts of movement. Image light of the tool and reference member is conducted to the position detection camera by prisms and half-mirror, without a camera for detecting the amount of deviation between the tool and reference member.
摘要:
A system and method for controlling the width of a web material supplied to a machine by adjusting the tension of the web material. An operator defines a target web width via an input device. The input device generates a reference signal representative of the target web width. A sensing device senses the width of the web material supplied to the machine and generates a feedback signal representative of the sensed width. A control circuit compares the feedback and reference signals and generates a tensioning signal as a function of the comparison. A tensioning device is responsive to tensioning signal for adjusting web tension.
摘要:
An apparatus for rotating objects around a tree. The apparatus includes a rigid material that has a top surface and a bottom surface with a first aperture, configured to receive the base of the tree. The aperture is disposed substantially in the center of the rigid material. A gear is coupled to the bottom surface of the rigid material. A frame includes a pinion configured to rotate about the gear. A motor, coupled to the pinion, rotates the pinion. The frame also includes a second aperture, configured to receive the base of a tree.
摘要:
An automated planer machine for planing a piece of lumber. The planer machine has a feed table for slidably receiving the bottom surface of the piece of lumber along a traveling course. One or more planing heads extend on sides of the traveling course to plane the surfaces of the piece of lumber. A linebar laterally guides the piece of lumber. Feed rolls along the traveling course move the piece of lumber. Positioning devices responsive to respective control signals are provided for adjusting a height of the feed table and planing levels of the planing heads as much when the planer machine is idle as during operation. Position encoders coupled to the feed table and the planing heads produce positional signals usable to accurately position them using the positioning devices.
摘要:
Wire from a wire source is supplied to create a predetermined amount of slack wire in a predetermined configuration and to maintain that slack wire configuration. Some of the slack wire is withdrawn from the configuration and advanced for use in forming an electrical connector. As wire is withdrawn from the slack wire configuration, additional wire is supplied to renew and maintain that configuration. A characteristic of the slack wire configuration is sensed to control the amount wire supplied. In this manner, the mass and rotational effects of unwinding wire from a spool while simultaneously advancing that wire are avoided, thereby avoiding wire slippage and allowing the constituent components of the connector, such as bulges of a twist pin connector, to be more precisely located during fabrication.
摘要:
A four-direction adjustable optical module including a carriage and a CCD module is disclosed. The carriage includes a coupling window for coupling with the CCD module. Each of the two sides of the CCD module includes a screw hole and an elastic device. The elastic device slightly protrudes from the surface of the coupling window. While the CCD module and the coupling window are coupled, screws are employed to screw through the CCD module and into the screw holes of the coupling windows. Therefore, the elastic devices deform by the stress from the CCD module. By adjusting the tightness of the screws, the orientation of the CCD module rotating on the Z axis can be calibrated. Thus, the adjustable optical module of the invention can be calibrated at least in four directions.