CN87212982U - Lathe adjunct tool - Google Patents

Abstract

The utility model discloses a lathe adjunct tool which adopts an elastic fast changing structure, a position guiding mechanism and a safety device. The lathe adjunct tool has drilling, expanding, reaming, tapping and threading functions. Replacing the tool bit only needs 2 seconds. The lathe adjunct tool is suitable to process inner and outer screw thread with various specifications from M5 to M22, comprising the blind hole inner screw thread and the outer screw thread with the step. The lathe adjunct tool can also fasten the straight shank drill bit, reaming tool and the center drill to process the inner hole. The utility model has the advantages of high work efficiency and safety assurance. The lathe adjunct tool is suitable to be popularized at home and abroad.

Description

Lathe adjunct tool

The utility model belongs to turner's accessory.

At present, use worker's accessory of common universal lathe tapping, hitch both at home and abroad, weakness such as the ubiquity range of work is little, and production efficiency is low, and machining accuracy is poor, and labour intensity is big.Especially process the blind hole internal thread of all size or with the external screw thread of big step, a technical barrier that waits to solve especially.Cut pin and process this type of workpiece if adopt hard alloy cutter to carry out high speed, then cutter withdraws from workpiece near being difficult near or the blind pore wall of big step.Simultaneously, also require the operator must possess skilled technical ability, energy is wanted high concentration during operation, have carelessness that cutter collision workpiece step or inner hole wall will take place slightly and cause tool damage or (with) workpiece scraps, even can cause equipment and personal injury.

At the weak link that exists in the above-mentioned metal cutting field, the utility model discloses a kind of multifunctional efficient safety turner accessory that has, and has overcome defective of the prior art effectively, has improved production efficiency.

The utility model main points are to adopt quick change construction, positioning and guiding mechanism and safety locking motion.Quick change construction comprises quick change cover, quick chuck, is fit to the different cutting tools such as screw tap, screw die, drill bit or reamer of the various different sizes of clamping.Utilize quick change construction, cooperate by positioning element to reach rapid replacing cutting tool.Safety locking motion adopts the insurance coupling sleeve CONTACT WITH FRICTION of friction plate and gripping quick-changing structure, regulates the friction plate clamping force by uniform screw, to adapt to the blind hole internal thread or the big needed safe frictional force of step place screw thread of processing all size.When normal process was cut, this frictional force did not influence the skiver and advances greater than Tool in Cutting power.Run into blind hole internal thread wall or big step place when cutter, the resistance that this moment, cutter was subjected to surpasses above-mentioned safe frictional force, and the insurance coupling sleeve will be with quick change construction (or cutter) to follow workpiece to rotate together, play safety effect.When headstock drives the workpiece counter-rotating owing to adopt directed guiding mechanism, under the directed bearing pin effect in the insurance coupling sleeve, force the spirally-guided cover with quick change construction (or cutter) along the spiral workpiece that withdraws from of the external diameter of taper shank.

It is rapid that the utility model is changed cutter, and a kind of cutter of every replacing only needed for 2 seconds, and the cutter of replaceable nearly hundred kinds of different sizes is fit to the internal and external threads that processing M5-M22 comprises all size of blind hole and big step altogether.Also but the straight shank drill of clamping all size, reamer or centre drill are processed endoporus.The hole internal thread of a M22 of processing or big step screw thread respectively need 10 minutes on general lathe.And adopt innovation and creation only to need 1 minute, and improve 10 times of work efficiency approximately, and operator's technical ability is less demanding, the apprentice can be competent at a job.

Fig. 1 is the overall sectional arrangement drawing of the utility model

Fig. 2 is Fig. 1 annex, the quick chuck part assembling drawing

Fig. 3 is the D-D sectional structure in Fig. 2 quick chuck

Fig. 4 is A-A and the B-B sectional structure among Fig. 1

Fig. 5 is the C-C sectional structure among Fig. 1, the directed insurance of expression coupling mechanism.

Below in conjunction with accompanying drawing to enforcement of the present utility model with make and be used as a description:

It is fixing at first the taper shank ［ 1 ］ of this turner's accessory to be put into tail stock sleeve taper hole.With the quick change construction clamped tool, promptly fix stand-by garden screw die ［ 13 ］ or fix stand-by reamer, drill bit, centre drill or screw tap cutters such as ［ 23 ］ by the trip bolt ［ 18 ］ of quick chuck by the screw ［ 12 ］ on the quick change cover ［ 14 ］.Then, promote positioning sheath ［ 10 ］ inwards, promptly compressed retainer spring ［ 15 ］, make the endoporus garden arc groove center of positioning sheath ［ 10 ］ aim at the symmetrical aperture center of insuring coupling sleeve ［ 6 ］, at this moment, the diameter of quick change cover ［ 14 ］ or quick change body ［ 20 ］ is put into insurance coupling sleeve ［ 6 ］ endoporus, make steel ball ［ 9 ］ can partly enter into the endoporus garden arc groove of positioning sheath ［ 10 ］, loosen positioning sheath ［ 10 ］, this positioning sheath ［ 10 ］ is under the elastic force effect of retainer spring ［ 15 ］, slippage trend before oriented, rotary quick change cover ［ 14 ］ or quick change body ［ 20 ］ again, when in the ball R groove of two symmetries on the top diameter of two steel balls ［ 9 ］ the centrally aligned quick change covers ［ 14 ］ laid or quick change body ［ 20 ］ in the symmetrical aperture that rotates to insurance coupling sleeve ［ 6 ］, then positioning sheath ［ 10 ］ outwards slippage automatically under retainer spring ［ 15 ］ effect, its inner hole wall is pressed into the steel ball ［ 9 ］ that is about to 2 symmetries in the ball R groove of two symmetries on quick change cover ［ 14 ］ or quick change body ［ 20 ］ top diameter and goes, and promptly changes cutter and finishes.This positioning sheath ［ 10 ］ is located steel ring ［ 11 ］ restriction, can not break away from insurance coupling sleeve ［ 6 ］, changes cutter in the horizontal direction with this structure and only needs for 2 seconds.

The quick change cover ［ 14 ］ of said fixing garden screw die can be made five spare parts, to adapt to the garden screw die needs of clamping M5 to M22 different size.The fixing quick chuck used of screw tap, drill bit, reamer or centre drill is that the pushing block ［ 27,28,29,30 ］ of four band certain angles is contained in the square hole body ［ 19 ］ and constitutes.Wherein taper pin ［ 31 ］ and screw 21 with the square hole body grasp soon body 20 junctor trip bolts 18 by thread connection on square hole body 19, this screw end glomeration is connected in the side plane dovetail groove of pushing block ［ 27 ］, the advance and retreat of regulating trip bolt ［ 18 ］ can drive the pushing block ［ 27 of four band certain angles, 28,29,30 ］ form a square hole clamping body of size arbitrarily, cover plate ［ 22 ］ is fixed on the square hole body ［ 19 ］ by screw ［ 21 ］, and anti-thrust block comes off.Because the square hole of this quick chuck can be regulated arbitrarily, so can clamp or unclamp screw tap, drill bit, reamer, the centre drill of nearly hundred kinds of different sizes, no matter clamped the cutter side of being handle or garden handle, cut workpiece the center that can both promptly be fixed on instrument.

This worker's accessory work in-process is unusual as running into, and plays safety effect by safety locking motion, can not be damaged cutter or workpiece, and when the headstock band the workpiece counter-rotating, because safety locking motion and the effect of positioning and guiding mechanism, cutter can in time withdraw from workpiece.Said positioning and guiding mechanism comprises the spirally-guided cover ［ 2 ］ that has left-handed gathering sill, and the guiding roll sleeve ［ 3 ］ that dog screw ［ 4 ］ passes in this left-handed gathering sill is fixed on the taper shank ［ 1 ］.The led restriction of roll sleeve ［ 3 ］ and dog screw ［ 4 ］ of spirally-guided cover ［ 2 ］ can be moved back along the external diameter spiral slide shift-in of taper shank ［ 1 ］.Three uniform screws ［ 16 ］ will compress overcoat ［ 8 ］ and connect with spirally-guided cover ［ 2 ］ by the endoporus of disk spring ［ 17 ］.Constitute a cavity between them, the friction means of safety locking motion is in this cavity.Positioning sheath ［ 10 ］ endoporus has interior garden arc groove, and this sheath ［ 10 ］ is compressible retainer spring ［ 15 ］ when pushing inward, and under the elastic force effect, outwards steel ring ［ 11 ］ restriction is located in slippage.2 steel balls ［ 9 ］ of location usefulness are in the aperture of insurance coupling sleeve ［ 6 ］ symmetry.

Above-mentioned safety locking motion is by insurance coupling sleeve ［ 6 ］, and preceding nylon friction plate ［ 7 ］ and back nylon friction plate ［ 5 ］ are formed.The diameter at butt end of the insurance coupling sleeve ［ 6 ］ that front and back friction plate and its clamping is in together in the above-mentioned said cavity, keeps CONTACT WITH FRICTION.Can be by three uniform screws ［ 16 ］ adjusting frictional force therebetween.In the side opening of insurance coupling sleeve ［ 6 ］ diameter at butt end, directed bearing pin ［ 25 ］ is housed, be subjected to pin ［ 24 ］ restriction, under directed spring ［ 26 ］ effect, directed bearing pin ［ 25 ］ front plane is touched on the side channel plane of spirally-guided cover ［ 2 ］ endoporus, and this insurance coupling sleeve ［ 6 ］ can be done unidirectional connection.

During this worker's accessory hitch, reach can reach 180mm.In hitch, tapping or first being processed such as boring, reaming, regulate three uniform screws ［ 16 ］ earlier to obtain the moderate friction grip power of degree of tightness.This friction grip power is relevant with the material of workpiece size of being processed and processing.Must look the concrete condition tightness of adjustment screw ［ 16 ］ at any time.When security insurance cover ［ 6 ］ and front friction plate ［ 7 ］ and afterwards friction plate ［ 5 ］ in cavity, rub thrust when moderate, with the hitch is example, when normal machining, outside the garden dental lamina contacts the workpiece that is rotating during the end face of garden, normally cutting is stressed less than this frictional force because of cutter, so spirally-guided cover ［ 2 ］ will advance along the spiral automatic slippage worker of the spiral guide slot of self along with the garden screw die.After being worked into required reach, headstock is driven anti-car, and spirally-guided cover ［ 2 ］ will be with the garden screw die to withdraw from workpiece, finishes external screw thread processing.If during the big step external screw thread of processing belt, readjust uniform screw ［ 16 ］, reach moderate friction grip power.Advance identical with above-mentioned hitch the normal process worker.When garden screw die worker enters the big step place of workpiece,, play the security insurance effect because the suffered resistance of cutter greater than friction grip power, at this moment, insures coupling sleeve ［ 6 ］ and will be with quick change cover ［ 14 ］ and cutter to rotate (one-directional rotation clockwise) with workpiece.When reversing, headstock (rotates counterclockwise) because directed bearing pin ［ 25 ］ front plane is touched on the side channel plane of spirally-guided cover ［ 2 ］ endoporus, force insurance coupling sleeve ［ 6 ］ in spirally-guided cover ［ 2 ］ endoporus, not being with quick change cover ［ 14 ］ to be rotated counterclockwise together, and insurance coupling sleeve ［ 6 ］ and spirally-guided cover ［ 2 ］ are joined together, when workpiece reverses, make the cutter band insurance coupling sleeve ［ 6 ］ and spirally-guided cover ［ 2 ］ withdraws from workpiece automatically along gathering sill, finish big step external thread cutting processing.If use this worker accessory machining internal thread or processing endoporus, as long as with the fixing stand-by cutter of quick chuck, be inserted in insurance coupling sleeve ［ 6 ］ endoporus, regulate uniform screw ［ 16 ］ and obtain moderate frictional force, can carry out normal process, the course of work is identical with above-mentioned hitch operation.Identical as the big step external screw thread of processing blind hole internal thread and above-mentioned processing.

Claims (2)

1. A kind of turner's accessory of forming by taper shank [1], it is characterized in that comprising quick change construction and positioning and guiding mechanism and safety locking motion, said quick change construction by the quick change cover [14] of fixing garden screw die and fixedly the quick chuck of screw tap, drill bit, reamer and centre drill formed, this chuck is made up of trip bolt [18], square hole body [19], quick change body [20], screw [21], cover plate [22], pushing block [27,28,29,30] and taper pin [31].Four pushing blocks [27,28,29,30] that have certain angle are assembled in the square hole of square hole body [19], trip bolt [18] by thread connection on square hole body [19], this screw end glomeration, be connected in the side plane ladder-type trough of pushing block [27], regulate the advance and retreat of trip bolt [18], can drive four pushing blocks [27,28,29,30] and form a square hole clamping body of size arbitrarily.Positioning and guiding mechanism by taper shank [1], spirally-guided cover [2], guiding roll sleeve [3], dog screw [4], compress overcoat [8], steel ball [9], positioning sheath [10], location steel ring [11], retainer spring [15] and form, mill out left-handed spiral guide slot on the garden of spirally-guided cover [2] the week body, the dog screw [4] and the spiral slippage of roll sleeve [3] of leading that it can fix on the vertebra handle [1].Quick change cover [14] and quick change body [20] respectively have a ball R groove on the radially relative position of its top diameter, promote positioning sheath [10], compressed retainer spring [15], made the endoporus garden arc groove of positioning sheath [10] aim at the symmetrical aperture center of insuring coupling sleeve [6].When the top diameter of quick change cover [14] or quick change body [20] put into the insurance coupling sleeve [6] endoporus in go, force steel ball [9] to enter into the endoporus garden arc groove of positioning sheath [10], at this moment quick change cover [14] or quick change body [20] are rotated towards any direction, positioning sheath [10] slippage forward under the effect of retainer spring [15], its endoporus garden side face will be pressed into the steel ball of 2 symmetries [9] in the ball R groove of two symmetries of quick change cover [14] or quick change body [20] and go, and reaches cutter is changed in the horizontal direction fast.Safety insurance structure is made up of back friction plate [5], insurance coupling sleeve [6], front friction plate [7], adjustment screw [16], pin [24], directed bearing pin [25], directed spring [26], insurance interlink cover [6] in the middle clamping of back friction plate [5] and front friction plate [7], by three uniform adjustment screw [16], can obtain needed friction plate and clamp
2. Power, installed pin [24] in the aperture of insurance coupling sleeve [6], directed bearing pin [25] and directed spring [26], directed bearing pin end shape carries out the transition to vertical plane by the garden arc, directed bearing pin [25] front plane is touched on the side channel plane of spirally-guided cover [2] endoporus, and insurance coupling sleeve [6] just can be done unidirectional connection.

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