CN1127687A

CN1127687A - Precision drilling clamping head

Info

Publication number: CN1127687A
Application number: CN 95108836
Authority: CN
Inventors: 邹德骏
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-09-05
Filing date: 1995-09-05
Publication date: 1996-07-31

Abstract

The precise clamping chuck for drilling and threading features bidirection linkage clamping of a forward-backward stud bolt and central bolt monodirection linkage clamping structure, and is used for quickly and precisely clamping cutting tools with round or square handle. It may be used on machinetools or electric tools.

Description

Precision drilling clamping head

Title of the present invention is a precision drilling clamping head, belongs to the Machining Technology field, particularly relates to machine tool and electric tool scope.

The inventor has visited 10,000 many enterprises of tens countries and domestic more than 30 provinces, consults and has retrieved domestic and international prior art, does not still have this product and technology.

The inventor had once invented tens kinds of serial machine tools, the country's new technology project applied of the enforcement period of the seventh five-year plan emphasis of listing in that has, the acquisition that has international invention gold medal and world cup invention Grand Prix, for country strives special honours.The acquisition that has national invention gold medal, (proof of seeing Appendix).

The present invention is on the basis that the inventor invented in the past, the invention main points of important breakthrough has been arranged, the novel precise drilling clamping head that is combined into.

The purpose of invention is to allow the prior art of drill chuck come revolution, to progressively eliminate on the human history since the drill chuck technology having been arranged so far also at the conventional formula of continuation use, the drill chuck of employing gear wrench clamp-on tool, the purpose of invention also is to raise labour productivity, reduce labor intensity, guarantee the high-quality of converted products, for the development of whole mankind's mechanical industry is made contributions.

The present invention is used in and can processes the same precision that axially goes up multiple operation boring, reaming, fraising, tapping part in addition on the lathe, reaches high yield and high quality.

Safe tapping structure of the present invention and novel drill chuck are combined, and are the effective tools of attacking system through hole and blind hole internal thread on the various lathes fast.

Two kinds of novel drill chucks of the present invention's positive and negative double threaded screw two-way linkage structure and center bolt single-way linkage clamping structure can be widely used on various lathes and the electric tool.

The present invention compared with prior art, the advantage that is had has been to break through conventional design concept principle, original in the world drill chuck can only press from both sides round shaft chisel, the present invention can be pressed from both sides round shaft chisel, also can the side's of folder shaft chisel, and can clip to the end, a hair also can clamp.Original technical pattern complexity, manufacture difficulty is big, and the present invention is skillfully constructed, and is simple in structure, easy to manufacture.Original technology clamping force is little, and the accuracy of manufacture is difficult to guarantee, for example will makes

0.6 extremely

6 P level is than the precision drill chuck head, its clamping bar

6,65 millimeters of length, its circular runout is 0.16 millimeter, manufacturing will acquire a certain degree of difficulty, and new type chuck of the present invention, the original technology of its circular runout ratio of precision is enhanced about more than once or easy can reaching, clamping force of the present invention with 0 to

10 new type chuck is an example, and its clamping force can reach more than 400 kilograms, about doubling than the clamping force of original technology, can prevent effectively that cutter from cutter inoperable phenomenon of skidding occurring inadequately because of clamping force in working angles.

Structural principle of the present invention and using method are seen Figure of description 2, accompanying drawing 3, accompanying drawing 4.Using method, taper shank 14 is put into the tail stock internal taper hole, moving handle 9, the plane parallel that makes eccentric wheel 13 is in packing ring 10, spring 8 is thrown off three tooth end face teeth between location rotor 3 and the fixed body 7, rotational positioning rotor 3, make it to rotate 120 degree, can hear that sound and hand touch and feel that the anterior R of removable pin 6 enters in the plane R circular groove of fixed body 7 under the effect of spring 5, reach location purpose just, at this moment the plate fixed handle 9, make it the plane tension of eccentric wheel 13 by packing ring 10, and three tooth spill end face teeth of three tooth convex end face teeth of the location rotor 3 of leading and fixed body 7 match, thereby reach pinpoint purpose.Repeating above-mentioned process just can change a tool position quickly and accurately workpiece is cut.

Insert with die nut in the interior hexagonal through hole of the A type drill chuck 1 of two-way linkage and 28 the positive and negative tooth screw rod 5 of double end and rotate, see accompanying drawing 3, will drive plus thread initiatively piece 3 and polygonal left-hand thread with the level initiatively piece 4 do relative to or move in opposite directions, also just with the level and then mobile in moving process by

motion block

1 and 2 polygonal, thereby form an enclosed clamping body structure that can enlarge arbitrarily or dwindle, the cutter of various round handles or square handle is clamped, workpiece is cut.If attack the system blind hole internal thread, just the center bolt single-way linkage clamping structure Type B drill chuck 21 of Figure of description 2 rotate to the lathe spindle axial line on positioning and fixing, die nut is inserted in the interior hexagonal through hole of center bolt 6 of Figure of description Fig. 4 and goes rotation, will drive polygonal active piece 7 with the level moves axially, it is with the level by motion block 1 to be bound to drive 3 polygonals in moving process, 2,4 move together, thereby the square hole clamping body that forms enclosed any amplification or dwindle, tight screw tap side's spindle clamp, at this moment shake the tail stock handwheel, when screw tap touches the workpiece endoporus, screw tap can be followed workpiece and be rotated together, at this moment can continue to drive to allow workpiece rotate fastening 3 uniform screws 27, no longer follow the workpiece rotation when being fastened to screw tap, and workpiece has normally been cut, just stop trip bolt 27, when screw tap is attacked workpiece blind hole inwall, cutting resistance increases suddenly, at this moment friction plate 16 and 22 just can't clip insurance connected body 15, insurance connected body 15 will be with Type B chuck 21 and screw tap to follow the workpiece rotation together, thereby reaches high-efficiency high-quality tapping purpose.In tapping process, fairlead 19 is the little axle 29 along the location automatically, move axially by guide collar 18, at this moment allow lathe spindle reverse, spring 26 will get on the eccentric grove plane that little 25 frontal planes of orientation push into fairlead 19, thereby fairlead 19 will drive insurance connected body 15 and drill chuck 21 and screw tap and retreat along the direction of axis line of the little axle 29 in location together, and screw tap withdraws from workpiece, has also just finished the overall process of tapping.

Claims

1, a kind of precision drilling clamping head of being formed by novel drill chuck 1, its technical characterictic is to comprise A type drill chuck and Type B drill chuck, also comprise fast linked two-fold locking and the Three-bearing location that resets, also comprise the technology that is used in combination of new type chuck and safe tapping safeties.

2, precision drilling clamping head according to claim 1, the technical characterictic of its A type drill chuck is by interior hexagonal through hole center, rotate positive and negative tooth double threaded screw 5, drive plus thread polygonal band step initiatively piece 3 and polygonal band step left-hand thread initiatively piece 4 do in opposite directions or relative direction moves, will drive polygonal band step in the moving process by motion block 1 and 2 slippages, form an enclosed square hole clamping body, be clamped to 0 always.Its taper hole connected body 7 is fixing by thread connection with clamper main body 6.

3, precision drilling clamping head according to claim 1, the technical characterictic of its Type B drill chuck are to rotate interior hexagonal through hole screw rod 6, drive a polygonal step active piece 7 and do axially-movable.In motion process, will drive three polygonal steps by motion block 1,2,4 slippages, form an enclosed square hole clamping body, make 1,2,4,74 part cycle operation in the interior circular hole of positioning body 3 and square hole in addition, be clamped to 0 always.The external diameter of the endoporus of its internal taper hole connected body 5 and positioning body 3 is linked together by temperature difference plunging tight fit.

4, precision drilling clamping head according to claim 1, the technical characterictic that its fast linked two-fold locking and Three-bearing reset and locate, be driving handle 9, promptly driving eccentric wheel 13 original place on the plane of packing ring 10 rotates, when the plane parallel of plane on the circumference of eccentric wheel 13 and packing ring 10, spring 8 is just thrown off three teeth, the 40 degree angle of thread double wedges of location rotor 3 with the recessed tooth of three teeth, 40 degree angle of threads of fixed body 7 mutually, during rotation location rotor 3 to 120 degree directions, the head R that can hear removable pin 6 enters into the sound that the plane trisection arc groove of fixed body 7 is sent under the effect of spring 5, also have tangible feel in operation, proof has just navigated to the position, at this moment, pull handle 9 again, when plate moves 70 degree best angle positions, because eccentric wheel 13 connected locating shafts 30 are the centre bores that pass location rotor 3 and fixed body 7, make the plane of periphery packing washer 10 of eccentric wheel 13, compressed spring 8, the double wedge of location rotor 3 and the recessed tooth of fixed body 7 are matched, reach high-precision resetting, the angle angle of the axial line of fixed body 7 and taper shank 14 is 48 degree, sees Figure of description 5 for details.

5, precision drilling clamping head according to claim 1, the technology that is used in combination of its novel drill chuck and safe tapping safeties, when it is characterized in that the Type B drill chuck side of clamping square-shank tap cuts workpiece, screw tap is run into the workpiece endoporus, can follow screw tap rotates together, at this moment continue to allow workpiece just change, fastening 3 uniform screws 27, compression spring washer 23, the fairlead 19 of leading is fastening gradually with connecting of positioning body 20, compressed inner chamber friction plate 16 and 22 and the insurance connected body 15, when the fastening force of screw 27 is increased to certain limit, screw tap is just no longer followed rotation, begin workpiece is carried out tapping, during tapping, fairlead 9 can move axially under the effect of screw 17 and guide collar 18 by little axle 29 along the location, after screw tap is attacked blind threaded inwall, cutting resistance can increase suddenly, at this moment friction plate 16 and 22 clamping not insurance connected body band screw tap and carry out work, but the screw tap band Type B drill chuck 21 and insurance connected body 15, play and then workpiece rotation, reach the purpose of tapping safely and fast, at this moment allow workpiece reverse, directed little axle 25 is under the effect of spring 26 and pilot pin 24, move axially, run into when its side plane on the endoporus off center plan of positioning body 20, will be with insurance connected body 15 and Type B drill chuck 21 and screw tap to stop the rotation, at this moment will be with Type B drill chuck and screw tap to withdraw from workpiece, finish the blind hole tapping of high-speed superior by fairlead 19 along direction of axis line.