CN86207968U

CN86207968U - Broken-tap extractor

Info

Publication number: CN86207968U
Application number: CN 86207968
Authority: CN
Inventors: 汤合肥
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-10-09
Filing date: 1986-10-09
Publication date: 1988-02-10

Abstract

The utility model discloses a broken-tap extractor which is associated with the machine work. One head of the broken-tap extractor is used for clamping the claw of the broken tap, and the other head of the broken-tap extractor is provided with a tail handle which is used for clamping. The utility model has the advantages of convenient operation, high safety and high work efficiency. As long as the chip in the chip space of the broken tap is cleared, the broken-tap extractor is inserted into the chip space of the broken tap, the tap wrench is sleeved on the broken-tap extractor and reversely rotates, and then the broken tap is pulled out. The efficiency is improved more than a plurality of times, even hundred times.

Description

Broken-tap extractor

The utility model is a kind of fracture of wire relevant with machining awl bottle opener, specifically relates to rise various active sections and breaks at the fracture of wire awl of workpiece inside.

Play the fracture of wire awl at present and still do not have specific purpose tool.Come fracture of wire to bore easy defective work piece surface with chisel, usually also risen to come out; The fracture of wire awl is bored in the annealing back, change the institutional framework and the performance of workpiece material, influences workpiece quality; With spark erosion equipment galvanic corrosion fracture of wire awl, not only the time spent long, and power consumption is big, also is subjected to the restriction of equipment and workpiece size sometimes.Since the screw thread manufacturing procedure after, part is scrapped and can be caused bigger economic loss.China " mechanic " (cold working) fourth phase in 1986 publication " fast simple fracture of wire awl " literary composition has disclosed a kind of fracture of wire awl instrument.This instrument has cross recess on body of tool, be placed with draw point in the groove, adds pressing plate and uses hexagon socket head cap screw fastening.Draw point with this instrument during use inserts in the chip pocket of fracture of wire awl, and reverse rotation trips out the fracture of wire awl.The draw point of this instrument and fracture of wire awl chip pocket are misfitted, and be disconnected easily.Especially the screw tap broken end uses this instrument when surface of the work is dark.Draw point inserts in the workpiece bottom outlet darker, because draw point is not to be subjected to circumferential shearing, but by bending, easier to be disconnected.

The purpose of this utility model provides the simple and easy specific purpose tool of a kind of fracture of wire awl.

The purpose of this utility model is achieved like this: one section cylindrical standing up of processing on one section steel material, and then directly at the several claws that are used for vising the fracture of wire awl of a processing of standing up, caudal peduncle of other end processing for clamping.

In order to make claw of the present utility model that suitable thickness be arranged, be easy to enter in the chip pocket of fracture of wire awl, have certain elasticity and higher intensity again, the outside diameter that the claw place is is decided according to the internal diameter of fracture of wire awl.Get its internal diameter 0.92～1 times; The claw center is provided with a small sircle hole, and the small sircle hole diameter determines according to fracture of wire awl tap web circular diameter size, than fracture of wire awl tap web circular diameter more greatly, and 1.07～1.25 times of general desirable its tap web circular diameter; Socket is arranged between the claw, and its width is wider than the width of fracture of wire awl sword sword lobe on claw cylindrical circumference, generally 0.81～0.84 times of desirable disconnected cutter blade width.

The quantity of the fracture of wire awl bottle opener socket of the utility model regulation determines that according to the quantity of disconnected cutter blade the fracture of wire awl has several sword lobes just several sockets must be arranged, and has 2 at least, generally has 3～6; The direction of its socket is made according to fracture of wire awl sword direction, is generally directly, in order to comply with the development trend of screw tap, also can be made into oblique; The length of its socket is looked the big or small slightly different of fracture of wire awl.The fracture of wire awl is a little greatly then long, and little then weak point a bit is shorter than most 2mm, is good with 5～10mm usually.The length of its socket is no more than the degree of depth of claw center small sircle hole as far as possible.

In order to make the fracture of wire awl bottle opener of the utility model defined, can play the screw tap broken end from the different fracture of wire awl of the surface of the work degree of depth, its length overall should be suitable with tap length.Because the screw tap broken end is basically at the surface of the work annex usually, the general comparable screw tap of length overall is a little short.

Pull generally for the used spanner of the fracture of wire awl bottle opener that makes the utility model defined and regular tap, the length of caudal peduncle and shape should to bore square tail the same with fracture of wire.

The fracture of wire awl bottle opener of the utility model defined is made very simple.Cheap, can be processed into tool set; It can play the fracture of wire awl that disconnects from different positions (active section), and is regardless of its section configuration; The claw intensity of the fracture of wire awl bottle opener of the utility model defined is big, coincide better with fracture of wire awl chip pocket, so safe and reliable, total effective rate can reach more than 90%, rises greater than the fracture of wire awl of M6 efficient up to 100%; It uses very convenient, removes as long as fracture of wire is bored the chip pocket intraclast, its claw is inserted in the chip pocket of fracture of wire awl, puts windeisen, and reverse rotation can trip out the fracture of wire awl; Use the fracture of wire awl bottle opener of the utility model regulation, operating efficiency can improve several times, even hundreds of times.

Below in conjunction with drawings and Examples the utility model is described in further detail.But the utility model is not limited by described embodiment.

Description of drawings:

Accompanying drawing 1 is the straight socket type schematic diagram of a kind of three-jaw of the present utility model.

Accompanying drawing 2 is the straight socket type schematic diagram of a kind of four paws of the present utility model.

Embodiment 1

What present embodiment was showed has been the fracture of wire awl bottle opener of M6 fracture of wire awl.With reference to accompanying drawing 1, it can be achieved like this:

With one section φ 6mm65M round steel, first turning makes its diameter equal 4.7mm, and claw (1) adds that the length sum of stand up (3) equals 38mm.

Bore small sircle hole (2): make small sircle hole (2) diameter equal 2.8mm, the degree of depth equals 8mm.

Cut off: make its length overall equal 46mm.

Dig (or milling) caudal peduncle (4): make caudal peduncle (4) the cross section length of side equal 4.9mm.

Mill socket (5): make its width equal 2.1mm, length equals 6mm; Successively workpiece is changeed 120 degree after milling what a socket, mill two other socket.

Heat treatment: make its hardness reach HRC40～45.

Embodiment 2

What present embodiment was showed has been the fracture of wire awl bottle opener of M12 fracture of wire awl.With reference to accompanying drawing 2, it can be achieved like this:

With one section φ 10mm60Si, the Mn round steel, first turning makes its diameter equal 9.4mm, and claw (1) adds that the length sum of stand up (3) equals 52mm.

Bore small sircle hole (2): make its aperture equal 6.5mm, hole depth equals 12mm.

Cut off: make its length overall equal 62mm.

Dig caudal peduncle (4): make its cross section length of side equal 7mm.

Mill socket (5): make its width equal 2.7mm, length equals 10mm; After a pair of socket has been milled in feed for the first time, workpiece is turn 90 degrees, mill another socket.

Heat treatment: make its hardness reach HRC48～53.

Claims

1, a kind of fracture of wire awl bottle opener is characterized in that an end is the claw (1) that is used for vising the fracture of wire awl, and the other end is the caudal peduncle (4) for clamping, and claw (1) and caudal peduncle (4) directly process on (3) standing up.

2, fracture of wire awl bottle opener as claimed in claim 1 is characterized in that the quantity of the socket (5) between the claw (1) equates with the quantity of disconnected cutter blade, has 2 at least.

3, fracture of wire as claimed in claim 2 awl bottle opener is characterized in that socket (5) is wider than the width of fracture of wire awl sword lobe on its excircle; The length of socket (5) is at least 2mm.

4, fracture of wire awl bottle opener as claimed in claim 1 is characterized in that claw (1) and (3) outside diameter of standing up is all bored internal diameter less than fracture of wire; The diameter of small sircle hole (2) is greater than fracture of wire awl tap web circular diameter; The degree of depth of small sircle hole (2) is more than or equal to the length of claw (1) (that is socket (5)).