CN201399593Y

CN201399593Y - Screw tap holder used for machining

Info

Publication number: CN201399593Y
Application number: CN2009200416825U
Authority: CN
Inventors: 许鑫; 陈云飞; 朱敏杰; 葛贵文; 杨斌
Original assignee: WUXI QIAOLIAN WIND POWER TECHNOLOGY Co Ltd
Current assignee: WUXI QIAOLIAN WIND POWER TECHNOLOGY Co Ltd
Priority date: 2009-03-31
Filing date: 2009-03-31
Publication date: 2010-02-10
Anticipated expiration: 2019-03-31

Abstract

The utility model relates to a screw tap holder used for machining, in particular to a screw tap holder which is applicable to tap the screw thread on a large scale by a radial drilling machine, belonging to the technical field of a mechanical structure. According to the technical scheme provided in the utility model, the screw tap holder used for machining comprises a main handle and a screw tapjacket, and is characterized in that one end of the main handle is a cylindrical body; one end of the screw tap jacket is detachably arranged in the cylindrical body; a plurality of communicating through holes are arranged on the wall close to the left end of the cylindrical body; balls are arranged in the through holes; a toggle sleeve which performs axial movement corresponding to the cylindrical body is arranged outside the cylindrical body corresponding to the through holes; the toggle sleeve is provided with a space for holding the balls and protrusions used for pushing the balls to moveradially in the through holes; the middle of the cylindrical body is provided with a step; a spring is arranged outside the cylindrical body and between the toggle sleeve and the end face of the step;and the outer wall of the screw tap jacket is provided with a cavity used for holding parts of the balls. The screw tap holder used for machining has the characteristics that not only the quick clamping can be realized, but also the radial torque protection is provided, the production efficiency is effectively improved, and the reject rate is reduced.

Description

The tap chuck that is used for machining

Technical field

The utility model relates to a kind of tap chuck that is used for machining, is applicable to that specifically radial drilling machine attacks screw thread in enormous quantities, belongs to the frame for movement technical field.

Background technology

High speed development along with China's mechanical industry, advocate green energy resource energetically, wind-power electricity generation is the industry that state key is supported, more and more to the demand of wind-powered electricity generation major part (wheel hub, base, bearing block, brake disc etc.), the specification requirement of wind-powered electricity generation parts is more and more higher simultaneously.For part of wind-powered electricity generation more than 200 big or small screwed hole arranged, specification requirement (screw thread the leads to no-go gage) difficulty that all process and meet the client is very big.There is not our department before this novel tap chuck that is used for machining mainly to adopt small-sized three to grab chuck and clamp the screw tap tapping.But because the screwed hole diameter of wind-powered electricity generation part is bigger and the degree of depth is dark, three clamping forces of grabbing chuck are bothered by Artificial Control and clamping, are easy to occur transfer phenomenon, cause screwed hole to rot tooth, directly cause workpiece to scrap; Because the screwed hole degree of depth is dark, the screw tap clamping position is few, also occurs transfer phenomenon easily; Three grab chuck itself does not have radially protection, when moment of torsion exceeds the yield strength value of screw tap, causes the screw tap fracture, breaks in screwed hole, is difficult for taking out; Though market, outside also is useful on the tap chuck of machining, but specification is more single, generally has only M8-M20, the tap chuck that is used for machining of little M36 and even M48, even having generally all is import, cost an arm and a leg, not that general enterprise can bear.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned weak point, thereby a kind of tap chuck that is used for machining that can quick-clamping has torque protection radially and low cost again, the rate of enhancing productivity, reduce the number of rejects and seconds are provided.

According to the technical scheme that the utility model provides, the described tap chuck that is used for machining comprises main handle and tap chuck, it is characterized in that: an end of described main handle is a cylindrical body, and an end of described tap chuck removably is positioned at described cylindrical body; The through hole of a plurality of perforations is set on the close wall of left end on the described cylindrical body, in through hole, places ball; Corresponding to the position of through hole the sliding set that cylindrical body relatively axially moves is set in the outside of described cylindrical body, is being provided for holding the space of ball on the described sliding set and is being used to promote ball in described through hole, to make the projection that moves radially; Middle part at described cylindrical body is provided with step, between the end face of outside, sliding set and the described step of cylindrical body spring is set; Be provided for the cavity of holding portion ball at the outer wall of described tap chuck.

The position in the left side of close cylindrical body is provided with the cavity of perforation on the wall of cylindrical body, in described cavity, place block, in the cavity of block outside, place rubber blanket, be provided for locating the main handle overcoat of rubber blanket and block in the outside of described cylindrical body corresponding to the position of cavity; The inwall of described block contacts with the outer wall of described tap chuck.

Near on the outer wall on right side spline is set at described tap chuck, the inner shape of described block and described spline coincide, and the inner of described block embeds in the described spline.Utilize alignment pin to interconnect between described block and the described rubber blanket.Left end outside at described tap chuck is provided with the chuck nut.

The utility model is compared with existing technology and had the following advantages: the utility model is simple in structure, compact, reasonable; grab chuck and compare and have convenient mounting and clamping and firmly with original three; the positioning accuracy height; available screw tap scope is wide; having radially torque protection can protect screw tap not rupture low cost.

Description of drawings

Fig. 1 is that the general assembly of the utility model structure launches schematic diagram.

Fig. 2 is the utility model structure general assembly A-A cutaway view.

The specific embodiment

The embodiment of following the utility model in conjunction with the accompanying drawings is further described:

As shown in Figure 1: the described tap chuck that is used for machining comprises main handle 12 and tap chuck 2, and an end of described main handle 12 is a cylindrical body 13, and an end of described tap chuck 2 removably is positioned at described cylindrical body 13; The through hole 16 of a plurality of perforations is set on the close wall of left end on the described cylindrical body 13, in through hole 16, places ball 4; Corresponding to the position of through hole 16 sliding set 5 that cylindrical body 13 relatively axially moves is set in the outside of described cylindrical body 13, is being provided for holding the space 14 of ball 4 on the described sliding set 5 and is being used to promote ball 4 in described through hole 16, to make the projection 17 that moves radially; At the middle part of described cylindrical body 13 step 18 is set, between the end face of outside, sliding set 5 and the described step 18 of cylindrical body 13, spring 6 is set; Be provided for the cavity 15 of holding portion ball 4 at the outer wall of described tap chuck 2.When needs are changed screw tap, promote earlier sliding set 5 to the right, projection 17 on the sliding set 5 is moved right, and the space 14 on the sliding set 5 moves to the position of through hole 16, and the ball that is positioned at through hole 16 is outwards moved, be retracted in the space 14, at this moment just tap chuck 2 outwards can be pulled out, pull out tap chuck 2 after, unscrew screw tap nut 1, pull down original screw tap, the screw tap that more renews.And then with in the tap chuck 2 insertion cylindrical bodies 13, unclamp sliding set 5, under the effect of spring 6, sliding set 5 is moved to the left, in moving process, projection on the sliding set 5 17 compressing balls 4 are pressed into the part of ball 4 in the cavity 15 on the tap chuck 2, tap chuck 2 is locked in the cylindrical body 13, can not moves.

The position in the left side of close cylindrical body 13 is provided with the cavity 19 of perforation on the wall of cylindrical body 13, in described cavity 19, place block 10, in the cavity 19 of block 10 outsides, place rubber blanket 7, be provided for locating the main handle overcoat 8 of rubber blanket 7 and block 10 in the outside of described cylindrical body 13 corresponding to the position of cavity 19; The inwall of described block 10 contacts with the outer wall of described tap chuck 2, so that tap chuck 2 is positioned.

Near on the outer wall on right side spline 20 is set at described tap chuck 2, the inner shape of described block 10 and described spline 20 coincide, and the inner of described block 10 embeds in the described spline 20.Utilize alignment pin 11 to interconnect between described block 10 and the described rubber blanket 7.So that utilize 7 pairs of tap chucks 2 of block 10 and rubber blanket to position, tap chuck 2 can only be axially moved, can not rotate.

Left end outside at described tap chuck 2 is provided with chuck nut 1.After in screw tap inserts tap chuck 2, with 1 locking of chuck nut.

Tap chuck 2 is placed in the main handle 12, utilize block 10 location tap chuck 2 and main handles 12, on block 10, utilize alignment pin 11 location rubber blankets 7, main handle overcoat 8 utilizes holding screw 9 to be fixed on the outside of cylindrical body 13, during installation, earlier some balls 4 is placed on respectively in the through hole 16 of cylindrical body 13, mounting spring 6 and sliding set 5 again, and make spring 6 that certain decrement be arranged, refill O type rubber back-up ring 3, so that sliding set 5 is positioned.When using a little manpower sliding set 5 past pressing down, ball 4 can eject in cavity 15, is retracted in the space 14, at this moment just can apace tap chuck 2 be extracted in cylindrical body 13, changes the tap chuck 2 of different size.During installation, tighten chuck nut 1, just can fix screw tap at the head of tap chuck 2.Because adopted advanced frustum rank locking pattern, it is insecure effectively to stop artificial clamping, the side's of employing body emplacement depth has enough space clampings.Owing to adopted rubber blanket 7 transmissions, can adjust moment of torsion, increased radially torque protection, can thoroughly solve the problem of screw tap fracture.The utility model can solve the tapping problem of radial drilling machine.

Claims

1, the tap chuck that is used for machining comprises main handle (12) and tap chuck (2), it is characterized in that: an end of described main handle (12) is cylindrical body (13), and an end of described tap chuck (2) removably is positioned at described cylindrical body (13); Go up near the through hole (16) that a plurality of perforations are set on the wall of left end at described cylindrical body (13), in through hole (16), place ball (4); Corresponding to the position of through hole (16) sliding set (5) that cylindrical body (13) relatively axially moves is set in the outside of described cylindrical body (13), in the space (14) that is provided for holding ball (4) on the described sliding set (5) and be used to promote ball (4) and in described through hole (16), make the projection (17) that moves radially; At the middle part of described cylindrical body (13) step (18) is set, between the end face of outside, sliding set (5) and the described step (18) of cylindrical body (13), spring (6) is set; Be provided for the cavity (15) of holding portion ball (4) at the outer wall of described tap chuck (2).

2, the tap chuck that is used for machining according to claim 1, it is characterized in that: the position in the left side of close cylindrical body (13) is provided with the cavity (19) of perforation on the wall of cylindrical body (13), in described cavity (19), place block (10), in the cavity (19) of block (10) outside, place rubber blanket (7), be provided for locating the main handle overcoat (8) of rubber blanket (7) and block (10) in the outside of described cylindrical body (13) corresponding to the position of cavity (19); The inwall of described block (10) contacts with the outer wall of described tap chuck (2).

3, as being used for the tap chuck of machining as described in the claim 2, it is characterized in that: near on the outer wall on right side spline (20) is set at described tap chuck (2), the inner shape of described block (10) and described spline (20) coincide, and the inner of described block (10) embeds in the described spline (20).

4, as being used for the tap chuck of machining as described in the claim 2, it is characterized in that: utilize alignment pin (11) to interconnect between described block (10) and the described rubber blanket (7).

5, be used for the tap chuck of machining according to claim 1, it is characterized in that: the left end outside at described tap chuck (2) is provided with chuck nut (1).