摘要:
In a resin-made throttle body for controlling air flow rate in an air intake passage, orientation of resinous material of a wall of the throttle body surrounding the valve member has a step portion for controlling orientation of fiber-including resinous material. As a result, the inner periphery of the wall can expand or contract evenly as the valve member expands or contracts.
摘要:
Cassettes contain electronic parts. First and second feeders are operative for feeding the electronic parts from the cassettes. A first mounting head has sucking nozzles for picking up the electronic parts fed by the first feeder. A second mounting head has sucking nozzles for picking up the electronic parts fed by the second feeder. A table arrangement is operative for holding a printed circuit board. The first and second mounting heads are alternately moved along a first direction to a region above the printed circuit board on the table arrangement. The table arrangement includes a mechanism for moving the printed circuit board on the table arrangement in a second direction perpendicular to the first direction. Also, the table arrangement includes a mechanisms for rotating the printed circuit board on the table arrangement about an axis perpendicular to both the first and second directions. The sucking nozzles of the first mounting head place the electronic parts on the printed circuit board on the table arrangement when the first mounting head is in the region above the printed circuit board. The sucking nozzles of the second mounting head place the electronic parts on the printed circuit board on the table arrangement when the second mounting head is in the region above the printed circuit board.
摘要:
A chip-type electronic part storage casing includes a storage portion for storing chip-type electronic parts in a loose condition; an opening formed in a lower surface of the storage portion for discharging the electronic parts; a shutter for opening and closing the opening; and a scatter prevention member within the storage portion for preventing the electronic parts from being scattered in the storage portion. Additionally, a supply cassette includes a hopper provided at a lower portion thereof and having a storage portion for storing chip-type electronic parts charged therein through an opening in an upper surface thereof, a central portion of the storage portion being recessed to provide an inclined surface for gathering the electronic parts; an interrupting plate mounted within the storage portion in an inclined manner, a gap for allowing the passage of the electronic parts therethrough formed between one end of said interrupting plate and the inclined surface of the storage portion; a discharge pipe for discharging the electronic parts, the discharge pipe extending from the exterior of the hopper through a lower surface of the hopper to the storage portion, and being connected to the storage portion; a slide pipe slidably fitted on an outer periphery of the discharge pipe; and engagement ribs formed on the upper surface of the storage portion. A chip-type electronic part storage casing is further connected to an upper portion of the hopper through the engagement ribs.
摘要:
A chip component feeder is provided which includes a chip component storage box, a pick-up slider, a first feeding unit, and a second feeding unit. The pick-up slider slides to enter an outlet of the chip component storage box for picking up chip components and leads them to a feeding path formed in the first feeding unit communicating with the second feeding unit. The feeding path of the first feeding unit has a rectangular cross section suitable for the chip components of rectangular shape as well as square or circular shape.
摘要:
A method of monitoring machining load on a numerically controlled machine tool in such a way that incorrect judgment due to variations in machining load which are caused according to the machining conditions is made less frequent. The method is started by performing plural trial cutting operations. A signal indicating the machining load during these trial cutting operations is sampled and thus, sampling data is obtained. Reference data about the machining load and its variance are calculated from the sampling data and loaded in a reference data table. A threshold value according to variations in the sampling data is established, using the value of the variance. A load monitor means compares the reference data with data about the machining load obtained from actual measurements whenever each interval of time elapses. A decision is made as to whether the difference exceeds the threshold value. In this way, the machining load is monitored.
摘要:
A laser sputtering apparatus has a vacuum chamber, a target holder installed in the vacuum chamber, arranged to oppose the target in the vacuum chamber, a substrate mounted on the substrate support, and a laser beam source which emits laser beams onto the target through a window provided in the vacuum chamber wall, providing a laser sputtering apparatus that supplies dielectric thin films with a high permittivity and a high withstanding voltage.
摘要:
A programmable controller according to the present invention has memory means (P) for registering any functional instruction. On the basis of a functional instruction stored in the memory means, an individual functional instruction (Func) is repeatedly output to a machine tool. When the format of a functional instruction changes due to a difference in input conditions, input condition (B, C) data are created as a ladder and, by executing a single fixed input condition (A), the lead address of an area storing the parameter of the individual functional instruction is called and output, whereby a functional instruction of a unified format is executed.
摘要:
A light sheet material for a paraglider having an excellent tear strength and weather resistance comprises a polyester fiber woven fabric substrate impregnated with a waterproofing agent and a coating layer formed on the substrate and consisting essentially of a polysiloxane-modified polyurethane resin.
摘要:
A machining process sequence defined by machining definition steps is displayed on a display screen in the form of a flowchart (FLC). In subsequently performed processing for automatically deciding a machining process sequence, the machining process sequence is revised in such a manner that machining processes (e.g. 01/01. 02/01, 03/01), the order of which must not be changed, are arranged in a serial machining sequence and machining processes (e.g. 02/01, 02/02, 02/03, 02/04, 02/05), the order of which may be changed, are arranged in parallel. NC data are created on the basis of the revised machining process sequence.
摘要:
The invention relates to a surface cutting method for back-and-forth surface cutting of the interior of an area (AR) bounded by a closed curve.The surface cutting method includes repeating the following steps:a step of obtaining points of intersection P.sub.i, Q.sub.i between an i-th cutting path (PT.sub.i) and an offset curve offset (OFC') by (T+C+R) to the outer side of the closed curve, as well as points of intersection P.sub.i+1, Q.sub.i+1 between the offset curve and an (i+1)th cutting path (PT.sub.i+1), where T, C and R represent excess thickness, amount of clearance and tool radius, respectively;a step of obtaining a coordinate value, in the cutting path direction, of an outermost point R.sub.i on the offset curve (OFC') between the points of intersection Q.sub.i, Q.sub.i+1, where Q.sub.i is a point of intersection on a cutting end point side of the i-th cutting path (PT.sub.i) and Q.sub.i+1 is a point of intersection on a cutting starting point side of the (i+1)th cutting path (PT.sub.i+1);a step of performing surface cutting by moving a tool along the i-th cutting path until a coordinate value of the position of the tool in the cutting path direction coincides with the coordinate value of the point R.sub.i in the cutting path direction; anda step of moving the tool at a cutting velocity to the next (i+1)th cutting path (PT.sub.i+1) in a shift direction.