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JP2001304217 |
To provide a tapping screw preventing the development of a crack in a member even when the so-called one-shot execution is carried out and to provide a joining method. This invention is a tapping screw 1 screwed in from the first member ...
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JP2001293619 |
To provide a screw dimension measuring device that does with smaller alterations in the setup according to a change in screw type. The screw dimension measuring device 10 is so constructed that part of each finger 18 is made up of a leaf...
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JP2001293608 |
To suppress burrs on a workpiece by a rotating tool offering finishing with a flat drag tip. A flat drag tip 10 has a corner formed by a chamfer edge 15 providing a corner angle α of not less than 80° not more than 90°. The chamber ed...
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JP2001293620 |
To realize appreciable tapping by effectively suppressing chip plugging between the hole bottom and the tip face of a threaded portion. A tap 10 has a threaded portion 14 for threading, which has a plurality of recessing grooves 16 exten...
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JP2001289221 |
To provide a self-forming bolt producing very little chip. An external screw part 2 is formed at a shank of this self- forming bolt 1, and the external screw part 2 comprises a thread ridge part 2a and a thread root part 2b. A plurality ...
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JP2001287118 |
To detect increase in actual cutting load acting on a tapper even during accelerating/decelerating a main spindle adapted to drive the tapper. Total load torque detected when tapped during idling is preserved as data of reference load du...
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JP2001277048 |
To improve working performance and reduce cost by employing tapping exclusive to deformed pipes P. The socket of a deformed pipe P in a raised position is supported on a chuck, and a pair of tapping machines 40 is arranged outside them. ...
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JP2001277045 |
To provide a tapping device that can ensure a sufficient space for a tap holding part, increase the types of mountable taps and facilitate a change of different types of tap. A body member 8 is mounted on a press machine 2, and a lifting...
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JP2001277046 |
To provide a tapping device that can ensure a sufficient space for a tap holding part and increase the types of mountable taps. A body member 8 is mounted on a press machine 2, and a lifting/lowering member 15 is provided with lowering m...
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JP2001277057 |
To provide a working device capable of automatically boring, threading and cutting a tube body only by inputting and setting the shape data and the working data of a tube body to be worked. This working device is formed of a work rotatin...
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JP2001277047 |
To improve working performance and reduce cost by employing tapping exclusive to deformed pipes P. The socket of a deformed pipe P in a raised position is supported on an air-hold chuck 11, and a drilling machine 12 and a tapping machine...
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JP2001269863 |
To provide a groove aligning device for a ball screw shaft capable of automatically and accurately indexing the center position of a thread groove by relatively moving a measuring sensor in three directions of the radial direction, axial...
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JP2001259929 |
To provide a method for machining a screw capable of simplifying working processes, shortening working time, and reducing costs, and a straight pipe with a spiral joint.In this method for machining the screw, a specified length of the st...
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JP2001259928 |
To easily form a straight pipe with a spiral joint of excellent quality at a low price with simple working processes.This special purpose machine consists of a workbench, a scroll chuck comprising a through hole and multiple jaws provide...
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JP2001252827 |
To provide a cold forming tap to be easily provided with a fitting part, and to provide a threading method having high flexibility.A screw part 3 of the cold forming tap 1 has a leading part 4 tapered toward a tip thereof and a parallel ...
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JP2001252737 |
To provide a manufacturing method of a bolt which is manufactured at a low cost and in mass production and in which a fastened nut is hardly loosened even against a large vibration load.The manufacturing method of the bolt consists of a ...
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JP2001252825 |
To facilitate a design change corresponding to a change of work, and to reduce the number of parts items to be changed in a multi-spindle tap machining device capable of corresponding to a change of the machining part of the work.A frame...
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JP2001252826 |
To improve the production efficiency while performing the threading and the spot facing with one cutting tool without requiring an exchange of the tool.This threading method and the spot facing working method are provided with a tool set...
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JP2001239427 |
To provide a method and a device for machining a female screw of a pipe capable of improving efficiency and productivity and largely reducing cost.In the female screw machining method for forming the female screw inside the pipe 1, the p...
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JP2001232517 |
To hold circularity and adequately provide smooth paper transfer by forming a fine pyramid-shaped projection directly on the circumference of a round steel material in a paper feeding roller and providing a projection amount with high de...
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JP2001232518 |
To perform a tapping work in a manner that a generated chip does not damage a workpiece even when the tapping work is performed using a cutting tap.Tapping work device is provided with a plurality of cutting taps 55 for generating the ch...
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JP2001228909 |
To provide a machine tool and its control method capable of improving productivity by working precisely at high speed.In the case of working a precise screw, a control unit part 41 defines the moving position of a work piece 2 and that o...
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JP2001214916 |
To generate molding with an inside thread small diameter improved, by eliminating separation of material grains within a range of the inside screw thread small diameter, in case that an inside screw thread is manufactured in a material h...
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JP3216989 |
To form a threaded hole having a high fastening strength in a thin- walled metallic formed product with a closed section, provide a an inexpensive a thread fastening component or improve efficiency in fastening operation. When a thin-wal...
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JP3218159 |
PURPOSE: To prevent the deformation of a workpiece and the wear of a tap and enable high speed machining by reducing load generated during threading and at the time of a tap biting into a workpiece in the case of performing thread machin...
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JP3215485 |
PURPOSE: To reduce the process time of tapered threads without shortening of the life time of a taper thread tool, by providing a control means to control the pulling out speed of the tool so as to enlarge the relative speed between a me...
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JP3215559 |
PURPOSE: To facilitate setting of the threading length of a pipe and the like by detecting torque when a clamp member clamps the pipe while detecting the pipe diameter on the basis of the stopping position of the clamp member to set thre...
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JP2001198733 |
To dispense with such a special circuit for thread cutting and a program change for every thread cutting as are required in an existent thread cutting device adapted to work based on a spindle speed command. For a thread cutting operatio...
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JP2001179541 |
To provide a tap device capable of freely selecting a tap among plural taps and restricted in the bulk. Plural tap heads 19 for respectively supporting a tap 27 freely to be rotated and moved in the axial direction are arranged in parall...
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JP3204159 |
To correspond to grinding of two kinds of screws while fixing an inclination of a grinding wheel. A grinding wheel 12 is previously inclined by a specified angle in accordance with lead angles θ1, θ2 of two kinds of male screw parts S1...
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JP2001170819 |
To provide a thread milling cutter with a drill high in breaking strength which can be also used for steel working.A specified recess is provided in a knife edge side region L1 to an intermediate position of a land from a knife edge 24 o...
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JP3201286 |
To make a tapping from the bottom side by arranging a tap holding member to which rotation is transmitted and which moves a tap in a vertical direction while rotating it and by providing a tap driving device for rotating the tap holding ...
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JP2001162443 |
To provide a tapping jig without taking much time for tool replacement.This tapping jig comprises a chuck holding part 20 capable of being installed with a drill chuck of a drill-dedicated holder, a fixed collect 21 formed integrally wit...
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JP2001157920 |
To provide a tool for repairing a damaged thread.This tool comprises a body 2 with a hole 4 formed therein, a handle 6 with a female screw which is held so as to be freely rotated by 1° in a part of the hole 4, a cylindrical parts 12 ha...
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JP2001150245 |
To prevent a tap from coming off under its own weight by making sufficient frictional force and holding power act on a mounting part of the tap which is simply inserted into a square socket, to prevent damage to the tap and an accident d...
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JP2001150063 |
To simultaneously perform screw drilling with press stamping for rationalization of screw drilling work for press stamping component.A tap drilling apparatus which mounts a tap 4 through a tap holder 5, a sleeve 6 and the like on the mot...
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JP2001138137 |
To provide a thread chasing work device for a pipe capable of easily applying thread chasing work to even the long-scaled pipe of large bore. This thread chasing work device for a pipe is provided with a mechanism helically engraving a c...
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JP2001138136 |
To automatize an abnormality time process in thread cutting work. Prior to tapping work, a step 350 prepares for a tap return process (abnormality treating means) having possibility executed later, to store a tap start position A and a t...
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JP2001138139 |
To provide a self-tapping method capable of performing self tapping relating to a base material without using a tapping bolt required for particular work. A noncircular prepared hole 10 having a section of polygonal shape or the like is ...
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JP2001138138 |
To provide a nut tap capable of forming a high accurate internal thread relating to a workpiece formed of low carbon steel. An external thread part 4 for cutting is formed in a rear side of a cold forming external thread part 3 forming a...
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JP2001124254 |
To prevent the humping of the tightening torque and the seizure at a screw part attributable to generation of burrs in an incomplete screw part, and the misalignment when two working machines of a pre-working machine and a finishing mach...
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JP2001121351 |
To provide a cutting method maintaining same quality of external thread processing with using a machining center as that of internal thread processing. This cutting method cuts cylindrical periphery of a material 3 by a cutting tool 1. T...
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JP2001113414 |
To reduce a working time, that is, to improve the production efficiency of a parallel female pipe thread by applying a high-hardness sintered compact capable of being cut at a high speed for a chip in the working of the parallel female p...
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JP2001113416 |
To prevent the production of burr on a final outlet of the threading and dispense with the deburring by executing the chamfering work in advance with first, second and third end cutting edges and a thread cutting edge, and to improve the...
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JP2001113415 |
To improve the production efficiency of a taper female pipe thread by reducing a working time, by forming a prepared hole with a chip, controlling the chip by the spiral feeding to form a taper female pipe thread for pipe, and further us...
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JP3180513 |
PURPOSE: To shorten the processing time when processing is made using a tap fitted with a drill and enhance the processing efficiency. CONSTITUTION: The times required to make transition using the first and the second pattern are calcula...
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JP2001105286 |
To prevent the interference of a screw lower hole with a shank by regrinding a threading hole and forming a rake cutting edge having a diameter larger than that of the shank, and to reuse the threading tool to lower the cost of the threa...
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JP2001105233 |
To machine a tapped hole concurrently with press punching operation for rationalizing work for machining a tapped hole in press punched parts. A tapped hole machining device which has a tap 4 mounted on a motor shaft of a servo motor 1 d...
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JP3175209 |
PURPOSE: To provide longer life of a tool, by bending a serrated side face to form a projectingly curved face, for increasing the included angle and the nose strength of spiral shaping edges. CONSTITUTION: The upper and the lower faces 1...
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JP2001071215 |
To surely fix a nut blank by providing a holder receiving the nut blank supplied from a hopper, with a supporting member for supporting a side surface of the nut blank. A nut blank 2 is dropped and supplied from a supply guide 1, and rec...
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