CN2664823Y

CN2664823Y - Broaching tool claw positioning structure

Info

Publication number: CN2664823Y
Application number: CN 03263005
Authority: CN
Inventors: 张启峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-29
Filing date: 2003-09-29
Publication date: 2004-12-22
Anticipated expiration: 2013-09-29

Abstract

The utility model discloses a broach-claw positioning structure, which can prevent the main shaft in hollow-blade rotation from driving the broach claws to rotate, avoid counterbalance deviation of the main shaft and limit each broach claw in actual rotation. In the structure, the front end of a cutter pull bar 14 is provided with a claw seat 20, 50, 50`, which is provided by the recessing way with a neck 22 which has at least two broach claws 30, 40, 40` arranged by the looping way; the trail end of each broach claw 30, 40, 40` has a limiting part 34, 41, 41`, corresponding to which, the broach-claw seat 20, 50, 50` is provided with an inlaying part 24, 51, 51`. The limiting part 34, 41, 41` and the inlaying part 24, 51, 51` engage with each other and thereby limit and fix the broach claw 30, 40, 40` onto the claw seat 20, 50, 50`.

Description

Broaching tool claw location structure

Technical field

The utility model relates to the broaching tool claw structure of main shaft, is more particularly to the location structure between broaching tool claw and claw seat.

Background technology

As shown in Figures 1 and 2, habitual broaching tool claw structure is that axle is provided with a main shaft 2 in a sleeve 1, makes this main shaft 2 freely to rotate in this sleeve 1; These main shaft 2 central authorities are equipped with a broaching tool axis hole 3, and these broaching tool axis hole 3 front ends have a loose cutter skewed slot 4; Be equipped with a cutter pull bar 5 in this broaching tool axis hole 3, these cutter pull bar 5 front ends are set with a claw seat 6, on this claw seat 6, be equipped with a plurality of broaching tool claws 7, wherein these broaching tool claw 7 tail ends are provided with a groove 8, and wear with a ring-spring 9 and to link each broaching tool claw 7, make each broaching tool claw 7 on this claw seat 6, to keep elastic telescopic, and ejection is to these broaching tool axis hole 3 walls.

By said structure, when the stressed outside promotion of this cutter pull bar 5, these broaching tool claw 7 front ends fall in this pine cutter skewed slot 4, cause each broaching tool claw 7 to open to form an accommodation space, after supplying the user to insert the hilt seat, restarting this cutter pull bar 5 moves inward, make this broaching tool claw 7 produce the clamping action along these broaching tool axis hole 3 walls, this moment by broaching tool axis hole 3 walls and this claw seat 6 respectively clipping live the interior outside of this broaching tool claw 7, can be really when main shaft 2 rotations firmly this broaching tool claw 7 do not relatively rotate.

When general main shaft 2 is finished in the machine assembling, all essential step through the counterweight calibration, the situation that can produce beat or rock when avoiding main shaft 2 to rotate, especially the employed accurate main shaft of Precision Machining, in case the situation of accurate main shaft generation counterweight skew will cause more serious consequence under the state that runs up; Yet; general manufacturer is when test machine; usually can allow main shaft 2 when empty cutter state, rotate test; but this moment, each broaching tool claw 7 was to be in the open state of elasticity; these broaching tool axis hole 3 walls and this claw seat 6 not clipping are lived this broaching tool claw 7; cause between this broaching tool claw 7 and the claw seat 6 and produce relative rotation; so; will cause the counterweight of main shaft 2 to produce skew; can produce when causing main shaft 2 processing cuttings and rock or beat; when serious even can cause manufacturing deficiency or failure; when in a single day therefore the situation of main shaft 2 counterweights skew takes place, often need whole group main shaft 2 is pulled down, readjust the counterweight situation; not only cause manpower to waste greatly, more can incur loss through delay the production and processing time.

The utility model content

Main purpose of the present utility model is to overcome deficiency of the prior art, provide between a kind of broaching tool claw and claw seat to be embedded mutually, prevent that the empty swivel of main shaft from driving each broaching tool claw counterweight that rotate, main shaft and producing broaching tool claw location structure skew, the certain rotary spacing of each broaching tool claw when moving.

In order to solve the problems of the technologies described above, the utility model is by the following technical solutions: a kind of broaching tool claw location structure, it is that front end at a cutter pull bar 14 is provided with a

claw seat

20,50,50 ', establish at least two

broaching tool claws

30,40,40 ' neck 22 being concaved with a ring on it on this

claw seat

20,50,50 ', the limit spring 33 that is used to wear joint of a ring-type is arranged at each

broaching tool claw

30,40,40 ' tail end; It is characterized in that: each

broaching tool claw

30,40,40 ' rear end are provided with a limiting section 34,41,41 ', go up correspondence at this

claw seat

20,50,50 ' and be provided with a fitting portion 24,51,51 ', this limiting section 34,41,41 ' and fitting portion 24,51,51 ' chimeric spacing mutually, this

broaching tool claw

30,40,40 ' is fixed on this

claw seat

20,50,50 '.Chimeric spacing mutually by this limiting section and fitting portion, can reach the purpose that makes this broaching tool claw rotary spacing.

Owing to adopt technique scheme, the broaching tool claw location structure that the utility model provides has following beneficial effect compared with prior art, be that the utility model is embedded by between broaching tool claw and claw seat mutually, can reach each broaching tool claw and when idle running or load rotation, all can limit the purpose of location really, avoid when the empty swivel of main shaft is moving, driving each broaching tool claw rotational slide, can improve habitual broaching tool claw really and cause the relative slippage of generation between broaching tool claw and claw seat often in main shaft idle running, cause the counterweight of main shaft to produce the problem of skew, and avoid main shaft when cutting processing to produce and rock or beat, or problems such as manufacturing deficiency and failure.

Description of drawings

Fig. 1 is habitual broaching tool claw generalized section;

Fig. 2 is habitual broaching tool claw action schematic diagram;

Fig. 3 is a three-dimensional exploded view of the present utility model;

Fig. 4 is a combination generalized section of the present utility model;

Fig. 5 is a broaching tool claw action schematic diagram of the present utility model;

Fig. 6 is the broaching tool claw action schematic diagram of the utility model second embodiment;

Fig. 7 is the broaching tool claw action schematic diagram of the utility model the 3rd embodiment.

The concrete mode of implementing

The utility model will be further described below in conjunction with accompanying drawing:

As shown in Figures 3 and 4 and in conjunction with Fig. 5, a kind of broaching tool claw location structure of the present utility model, it mainly comprises: a central principal axis group 10, and it is that axle is provided with a main shaft 12 in a sleeve 11, is equiped with the power source that this main shaft 12 is rotated freely in this sleeve 11 in the back of this main shaft 12; Be equipped with broaching tool axis holes 13 in the middle of this main shaft 12, these broaching tool axis hole 13 front ends also cooperate the tapering of cutter hilt seat, an openend 131 that outwards enlarges is gradually arranged, and at these openend 131 inner edge places one loose cutter skewed slot 132 is arranged; Wherein, be equipped with a cutter pull bar 14 in this broaching tool axis hole 13, these cutter pull bar 14 rear ends are equipped with lead ring 141, one a dish-like flexure strip group 142 and a back lead ring 143 before one according to order, and lock is established a rod nut 144 that is used for fixing this dish-like flexure strip group 142;

One claw seat 20, these claw seat 20 tail ends are installed in this cutter pull bar 14 front ends, and there is a conical end 21 these claw seat 20 fronts, are concaved with a neck 22 in these conical end 21 back, are concaved with an annular groove 23 in this neck 22; Wherein, convex with at least one fitting portion 24 on neck 22 sidewalls of this claw seat 20, this fitting portion 24 is meant the fitting portion 24 of the locating piece 241 of a rectangular block shape;

At least two broaching tool claws 30, these broaching tool claw 30 inboards convex with a ccontaining protruding eaves 31 in location that is positioned in this annular groove 23; Each broaching tool claw 30 tail end is provided with a groove 32, and the limit spring 33 of a ring-type is arranged in this groove 32, and this limit spring 33 wears each broaching tool claw 30 and engages or engage; Whereby, this broaching tool claw 30 can produce the elasticity opening and closing in the neck 22 of this claw seat 20; Moreover, this broaching tool claw 30 is provided with limiting section 34, this limiting section 34 is meant the limiting section 34 that respectively is concaved with a guide groove 341 in these both sides, broaching tool claw 30 rear end, makes two adjacent broaching tool claws 30 form an embedded slot 35 when opening, and this embedded slot 35 is chimeric spacing mutually with this locating piece 241;

As shown in Figure 5, by said structure, when opening, this broaching tool claw 30 can form an embedded slot 35, make with this locating piece 241 chimeric spacing mutually, even this main shaft 12 is in the following time of state that the sky swivel moves, this embedded slot 35 and this locating piece 241 can produce the locating effect of broaching tool claw 30, make 20 of this broaching tool claw 30 and claw seats not produce relative displacement because of rotation, no matter make when this main shaft 12 is the moving or device cutter rotation of sky swivel, the problem of main shaft 12 counterweights skew can not take place yet;

The utility model is embedded mutually by 20 of broaching tool claw 30 and claw seats, can reach each broaching tool claw 30 can be in the fixing purpose of claw seat 20 upper limits, avoid when main shaft 12 empty swivels are moving, driving each broaching tool claw 30 rotational slip, cause the counterweight of main shaft 12 to produce the problem of skew, really improve conventional techniques and when empty cutter, can't reach spacing fixing problem, guarantee main shaft 12 and when processing is cut or when empty cutter turns round, can not produce to rock or beat no matter be;

As shown in Figure 6, it is second embodiment of the present utility model, is that the place is provided with a limiting section 41 in the middle of the tail end at this broaching tool claw 40, on this claw seat 50 to being provided with several fitting portions 51 by limiting section 41; Wherein, this limiting section 41 is a rectangle caulking groove 411, and this fitting portion 51 is the abaculus 511 of a shape corresponding to this caulking groove 411;

Whereby, when this broaching tool claw 40 produces the elasticity opening and closing on this claw seat 50, can this limiting section 41 be a rotating axle center not only, more can locate this broaching tool claw 40 really, can not produce relative displacement with this claw seat 50;

As shown in Figure 7, it is the 3rd embodiment of the present utility model, and wherein, the limiting section 41 ' of this broaching tool claw 40 ' is a rectangle abaculus 412 ', and the fitting portion 51 ' of this claw seat 50 ' is the caulking groove 512 ' of a shape corresponding to this abaculus 412 ';

The utility model adopts above-mentioned three most preferred embodiments to explain, and these embodiment in order to explanation the utility model, are not to be used for limiting protection domain of the present utility model only.Those of ordinary skills can do various change or improvement not breaking away under the utility model spirit and scope, still belong to the protection domain of the utility model patent application.

Claims

1. broaching tool claw location structure, it is that front end at a cutter pull bar (14) is provided with a claw seat (20), (50), (50 '), at this claw seat (20), (50), be concaved with a ring on it on (50 ') and establish the neck (22) of at least two broaching tool claws (30), (40), (40 '), the limit spring that is used to engage (33) of a ring-type is arranged at each broaching tool claw (30), (40), (40 ') tail end; It is characterized in that: the rear end of each broaching tool claw (30), (40), (40 ') is provided with a limiting section (34), (41), (41 '), go up correspondence in this claw seat (20), (50), (50 ') and be provided with a fitting portion (24), (51), (51 '), this limiting section (34), (41), (41 ') and fitting portion (24), (51), (51 ') are chimeric spacing mutually, and this broaching tool claw (30), (40), (40 ') are at this claw seat (20), (50), be fixed on (50 ').

2. broaching tool claw location structure as claimed in claim 1 is characterized in that, this broaching tool claw (30), (40), (40 ') tail end are concaved with one and are used to place the groove (32) of limit spring (33).

3. broaching tool claw location structure as claimed in claim 1 is characterized in that, this broaching tool claw (30), (40), (40 ') inboard convex with a location protruding eaves (31).

4. broaching tool claw location structure as claimed in claim 3 is characterized in that, this claw seat (20), (50), is concaved with one on (50 ') and is used to place the annular groove (23) of this location of locating protruding eaves (31).

5. broaching tool claw location structure as claimed in claim 1, it is characterized in that, this limiting section (34) is meant the limiting section (34) that respectively is concaved with a guide groove (341) in this broaching tool claw (30) both sides, rear end, and two adjacent broaching tool claws (30) form an embedded slot (35) when opening; This fitting portion (24) is meant at this claw seat (20) goes up the fitting portion (24) that correspondence convexes with several locating pieces (241), and this locating piece (241) is embedded in this embedded slot (35).

6. broaching tool claw location structure as claimed in claim 1 is characterized in that, this limiting section (41) is arranged on the middle place, rear end of each broaching tool claw (40).

7. broaching tool claw location structure as claimed in claim 6 is characterized in that, this limiting section (41) is a caulking groove (411), this fitting portion (51) be one with the abaculus (511) of the corresponding shape of this caulking groove (411).

8. broaching tool claw location structure as claimed in claim 6 is characterized in that, this limiting section (41 ') is an abaculus (412 '), this fitting portion (51 ') be one with the caulking groove (512 ') of the corresponding shape of this abaculus (412 ').