摘要:
Eccentricity is not allowed to occur in a blade section, and a blade section is maintained in a stable installation state. A hook section 124, which is composed of a shaft section 125 and an end section 126 provided with a corner section 132 that protrudes as a ledge farther to the outside in the radial direction than this shaft section 125, is formed in a blade section 120. A hook hole 144, which allows the passage of end section 126 of hook section 124, is formed in a bolt section 140. Engaging sections 150 are formed around hook hole 144. Corner sections 132 of end section 126 of hook section 124 are engaged with engaging sections 150 when blade section 120 and bolt section 140 are relatively moved in the direction in which they move away from each other in the direction of an axis O in the state in which blade section 120 is rotated by about 60° towards the front in a direction of screwing rotation S with respect to bolt section 140 after inserting and passing end section 126 of hook section 124 through hook hole 144.
摘要:
The holder for a head replacement-type cutting tool is provided with a holder main body and a tubular coupling member 3 which is housed in an attachment hole formed on the holder main body and made of a metal material lower in hardness than the holder main body. A recessed part is formed on an inner circumferential face of the attachment hole, the coupling member is engaged with the recessed part by firmly attaching the outer circumferential face thereof on the inner circumferential face of the attachment hole, and the coupling member is provided with an attachment screw part which is screwed into a head-side screw part formed at the replacement-type cutting head.
摘要:
A head replacement-type cutting tool having a holder provided at the attachment hole with the fitting part formed in a tapered shape, and the leading end face is perpendicular to the central axis. The attachment part formed in a tapered shape protrudes on the cutting head from the rear end face perpendicular to the central axis of the cutting part. The cutting head is attached to the holder in such a manner that the attachment part is fitted into the fitting part by screwing the female thread part with the male thread part and the leading end face is in contact with the rear end face. The inner diameter to outer diameter ratio d/D1 which is a ratio of the inner diameter d of the fitting part before being fitted in relation to the outer diameter D1 of the leading end part of the holder is from 0.5 to 0.8.
摘要:
The holder for a head replacement-type cutting tool is provided with a holder main body and a tubular coupling member 3 which is housed in an attachment hole formed on the holder main body and made of a metal material lower in hardness than the holder main body. A recessed part is formed on an inner circumferential face of the attachment hole, the coupling member is engaged with the recessed part by firmly attaching the outer circumferential face thereof on the inner circumferential face of the attachment hole, and the coupling member is provided with an attachment screw part which is screwed into a head-side screw part formed at the replacement-type cutting head.
摘要:
A throwaway insert and a cutting tool enable a high speed cutting operation for a metallic material having great ductility such as aluminum and obtaining a vertical wall with a high quality machined surface while improving chip control. The throwaway insert comprises a major cutting edge including a tapered cutting edge connected to a cutting edge of a nose portion, and a curved cutting edge connected to an end of the tapered cutting edge at a connection point. The curved cutting edge is formed so as to extend along an imaginary cylindrical surface whose center axis coincides with the axis of rotation of a tool main body, and tapered cutting edge is formed so as to gradually curve from the imaginary cylindrical surface toward the inside of the imaginary cylindrical surface as the distance from the curved cutting edge increases, and the distance from the nose portion decreases. The throwaway insert is attached to the tool main body in which the surface of the distal end thereof is machined so that surface roughness thereof is less than 3.2 μm when indicated by the Ry roughness.
摘要:
A cutting method using a vibratory cutting tool enables efficient creation of chips by breaking or separating of chips, and can retard both a deterioration of machined surface roughness of a workpiece and an increase in cutting resistance. The vibration of the cutting tool is controlled so that the following expressions are satisfied when letting a period of rotation of a workpiece be T, a period of vibration of the cutting tool be t.sub.total, the time required for the cutting edge to move from a farthest position in the feed direction to a farthest position in the direction opposite to the feed direction be t.sub.d, and the time required for moving from the farthest position in the direction opposite to the feed direction to a next farthest position in the feed direction be t.sub.u in the period of vibration of the cutting edge: T.apprxeq.t.sub.total .times.n+t.sub.d, where n is 0 or a positive integer; and t.sub.d .noteq.t.sub.u.
摘要:
An apparatus for detecting internal pressure of a can has a reaction detector comprising two sets of fixed members and load cells arranged slightly narrower than the outside diameter of a can body and in a slightly different spaced apart from each other and a buckling detection sensor for detecting a displacement of the center of a cover. The reaction detector and the buckling detection sensor are mounted on a frame adjustable in position according to the kind of cans to be tested. The can is made to pass between two fixed members and load cells while being held by side retaining belts provided along the conveyor while being prevented from rotation. The same part of a can body is forced with different amounts of force and the reaction at that time is measured and converted into internal pressure of the can. The internal pressure of a can is thus measured accurately by this apparatus even if there are deviations in the roundness of the can body. The cover buckling detection sensor detects a can having an excessively high internal pressure which gives rise to buckling.
摘要:
An optical switching unit including mechanisms for receiving a beam of light consisting of a plurality of component rays of different wavelengths, separating the light by making use of the reflection characteristic of suitable spectroscopic elements into the component rays to be lead to corresponding light-conductive paths, selecting either the interruption or transmission of the component rays by means of light-shielding plates provided in the respective light-conductive paths, and collecting the components rays to again compose a composite ray of the beam of light to be let out.The respective light-conductive paths are connected in parallel and have their light-separating branched portions arranged in series. In each of the branched portions is disposed a corresponding one of the spectroscopic elements, which corresponding one has its reflection characteristic reflectable of a corresponding component ray and a component ray reflectable by at least a one-stage preceding spectroscopic element.
摘要:
The objective of the present invention is to obtain an effective defoaming effect by directing a pulsed sound wave generated by shock caused by laser-induced breakdown to a liquid surface using an acoustic waveguide. A reflected wave of the pulsed sound wave generated by shock caused by laser-induced breakdown on an inner circumference face of the acoustic waveguide is directed to an opening part of the acoustic waveguide opposed to the liquid surface, and variations in periods of time in which the reflected wave in each travelling direction arrives at the opening part are reduced.
摘要:
The slicing machine of the present invention comprises a center blade-position detecting sensor arranged opposite a cutting area of an annular blade with a partially cut slice disposed between the center sensor and the cutting area of the blade. Two side blade-position detecting sensors are also provided at both sides of the center sensor and opposite the side adjacent areas of the cutting area. Three electromagnets are provided at corresponding positions to the sensors respectively, in order to control the deviations of the blade at each measuring point in accordance with the output signals of the sensors. Furthermore, a controlling device is provided in order to control currents to be supplied to the electromagnets in accordance with output signals from the sensors.