CN102950496B - The tool-broaching mechanism of cutter - Google Patents

Abstract

The invention relates to a kind of tool-broaching mechanism of cutter, its outer sleeve consisting predominantly of a sleeve pull head and be made up of several claw, in point ribs such as sleeve pull head periphery configurations, formed between two corresponding ribs and lead groove, claw for outer sleeve installs and linking sleeve is located at sleeve pull head outside, and this sleeve pull head end arranges the pull bar that the corresponding group of external thread section establishes Power output; By this, sleeve pull head is allowed to have ribs to increase handle of a knife clamping force, in identical tighten up pulling force specification under, connecting portion because of this sleeve pull head is external screw thread, handle of a knife holding function and larger central through hole footpath can be possessed, can large-sized power transmission shaft be passed, use as tool feeding axle, or with being main shaft machining power, and power transmission shaft still possesses air blowing-out and cutting fluid central water outlet function; In addition, point configuration such as sleeve pull head periphery ribs, accurately can separate and guide claw and move, can be used for high-speed main spindle toolroom machine.

Description

The tool-broaching mechanism of cutter

Technical field

The invention relates to a kind of tool-broaching mechanism of cutter, refer in particular to a kind of tool-broaching mechanism on the process tool of toolroom machine, this device has the shape of ribs by sleeve pull head and connecting portion is external screw thread, handle of a knife holding function and larger central through hole footpath can be possessed, large-sized power transmission shaft can be passed, as tool feeding axle (power transmission shaft) such as face, automatic tool processing footpath adjustment function etc., or with being main shaft machining power, such as right-angle milling head, the power transmission of special dynamic tool apron etc., point configuration such as pull head periphery ribs, accurately can separate and guide claw and move, can be used for high-speed main spindle toolroom machine.

Background technology

The main basic function of tool-broaching mechanism in general tooling system for providing enough pulling force handle of a knife and main shaft to be tightened up, provide a datum level for ejecting cutter when exiting cutter, need can High Rotation Speed, handle of a knife cutting fluid can be provided and easily assemble by front-end of spindle, adjust, and replacing.

And its tool-broaching mechanism is as No. 4997325, US Patent No., shown in please refer to the drawing 1, (center line one end sets firmly for non-start, the other end is that start sets firmly state), in main shaft 1, be provided with tool-broaching mechanism 2 correspondence set firmly cutter 3, and tool-broaching mechanism 2 is made up of an inner sleeve 21 and the outer sleeve 22 of claw formula, when this inner sleeve 21 is corresponding drop-down, utilize inclined-plane 210 heap to support outer sleeve 22 to expand outward, make the corresponding clip of bulge loop 221 scrobicular ring week 11 in main shaft 1 after its outer sleeve 22, and the interior ring edge 31 of the corresponding clip cutter 3 of bulge loop 222 and drop-down fixed cutting tool 3 before outer sleeve 22; Its shortcoming is:

1, tooling system is hollow short sword handle two sides contact structure, what cutter 3 and existing market used 7/24 pushes away tool systematic comparison of drawing sword, need higher pulling force, outer sleeve 22 must have enough thickness to bear pulling force, execute a strength when inner sleeve 21 pull head in axis inwardly to pull, via inclined-plane 210, outer sleeve 22 is outwards backed down, times power effect of generation, therefore, when inner sleeve 21 pull head executes a pulling force, except need bearing pulling force, also must bear the reaction force outwards backed down, therefore inner sleeve 21 pull head also must have enough thickness bear institute strong.Central through hole diameter is restricted in the above conditions, needs again by cutting fluid, is difficult to again via centre bore transmission power.

2, inner sleeve 21 pull head is internal screw thread, and pull bar 23 diameter is restricted, and needs again by cutting fluid, is difficult to again via centre bore transmission power with above-mentioned.

3, outer sleeve 22 is fluted between each claw is separated by inner sleeve 21 etc., in order to reduce amount of unbalance, and the enable High Rotation Speed that reaches, but because separated place is at end face, effect is limited, and the shortcoming of the method is the length that can increase tool-broaching mechanism again.

In addition, No. US6568888, U.S.'s case, (center line one end sets firmly for non-start as shown in Figure 2, the other end is that start sets firmly state), in main shaft 1a, be provided with tool-broaching mechanism 2a correspondence set firmly cutter 3a, and tool-broaching mechanism 2a is made up of the outer sleeve 22a of an inner sleeve 21a and claw formula, this inner sleeve 21a central authorities are provided with casting lug thereon 211a and are separated between the claw of outer sleeve 22a, when this inner sleeve 21a correspondence is drop-down, utilize inclined-plane 210a to pile to expand outward to outer sleeve 22a, make the corresponding clip of bulge loop 221a after its outer sleeve 22a scrobicular ring week 11a in main shaft 1, and the interior ring edge 31a of bulge loop 222a corresponding clip cutter 3a and drop-down fixed cutting tool 3a before outer sleeve 22a, but, although this structure is equipped with casting lug thereon 211a by outer sleeve 22a claw precision separately in inner sleeve 21a interposition, balances can improve and shorten pull head length, but still having the disappearance with prostatitis technology the 1st, 2.

Shown in Fig. 3, general configuration is as aforementioned, only form plane 212b in inner sleeve 21b and the outer sleeve 22b claw face that contacts with each other, use plane 212b and carry out the equilibrium problem that equipartition claw solves High Rotation Speed, compared to US Patent No. 4997325, there is the advantage that inner sleeve length is shorter, but still have the disappearance with prostatitis technology the 1st, 2.

Continue, refer to shown in Fig. 4, this inner sleeve 21c periphery is provided with a stripper loop 213c (as shown in Figure 5), this stripper loop 213c end face has the casting lug thereon 211c be protruding in the middle of inner sleeve 21c, by outer sleeve 22c claw precision separately, can balance quality be promoted, but still have the disappearance with prostatitis technology the 1st, 2.

Finally, shown in Fig. 6, for the schematic diagram of German DE29723331 patent, this framework and each structure difference previous are all tighten up cutter so that doubly power function is next corresponding in previous designs, relative centre bore dia is restricted, and in DE29723331 patent, do not adopt a times power function, therefore inner sleeve 21d must impose comparatively great, strength via in outer sleeve 22d claw to the face 223d that pulls, reach cutter to the face 224d compression cutter 3d that pulls outward and tighten up function, because of power stream not to claw apply tensile force therefore claw thickness can reduce, relative inner sleeve 21d diameter can increase, its characteristic be inner sleeve 21d can bear larger pulling force or by larger aperture and inner sleeve 21d shorter.But this patent also has its shortcoming, for therefore this claw is not suitable for high-speed rotary main shaft without accurate separation, though be provided with a stripper loop 213d end face to be provided with stripper loop improvement balance in inner sleeve 21d periphery, accuracy is the same does not reach ideal.

Summary of the invention

The object of this invention is to provide a kind of tool-broaching mechanism of cutter, especially a kind ofly possess handle of a knife holding function and larger central through hole footpath, convenient via centre bore transmission power, and can be used for the cutter tool-broaching mechanism of high-speed main spindle toolroom machine.

For this reason, the invention provides a kind of tool-broaching mechanism of cutter:

The main corresponding assembling of this cutter is fixed in the tool-broaching mechanism of processing machine main shaft, and can process through main shaft drives, and this tool-broaching mechanism includes:

One sleeve pull head, be equipped with in outer peripheral edge and multiplely lead groove, and two corresponding grooves of leading are formed with ribs, by the design of multiple ribs, make it can increase handle of a knife clamping force, continue and be provided with external thread section in sleeve pull head end, the pull bar starting tool-broaching mechanism is connect with corresponding group, and sleeve pull head central authorities have a through hole, this through hole passes for a power transmission shaft, this power transmission shaft, as tool feeding or processing dynamics use, is provided with water injecting pipeline for cutting fluid circulation, and has gas channel between this power transmission shaft and water injecting pipeline for blowing-out chip in this power transmission shaft;

One group of outer sleeve, this outer sleeve is linked by multiple claw to be formed, and corresponding embedding group of each claw is led in groove at described sleeve pull head, and each claw be provided with by sleeve pull head lead groove push in support card face to the face of pulling and the outer of corresponding inlay card cutter inner ring.

The tool-broaching mechanism of cutter described above, this is respectively led in groove and is provided with a blowing-out hole.

Object of the present invention and effect system realized by following technology:

The tool-broaching mechanism of the present invention and a kind of cutter, its outer sleeve consisting predominantly of a sleeve pull head and be made up of multiple claw, in point ribs such as sleeve pull head periphery configurations, formed between two corresponding ribs and lead groove, claw for outer sleeve installs and linking sleeve is located at sleeve pull head outside, and this sleeve pull head end arranges the pull bar that the corresponding group of external thread section establishes Power output; By this, allow sleeve pull head have ribs and increase handle of a knife clamping force, in identical tighten up pulling force specification under, connecting portion because of this sleeve pull head is external screw thread, handle of a knife holding function and larger central through hole footpath can be possessed, can large-sized power transmission shaft be passed, use as tool feeding axle, or with being main shaft machining power, and power transmission shaft still possesses air blowing-out and cutting fluid central water outlet function; In addition, point configuration such as sleeve pull head periphery ribs, accurately can separate and guide claw and move, can be used for high-speed main spindle toolroom machine.

Accompanying drawing explanation

Fig. 1 is prior art one cross-sectional schematic;

Fig. 2 is prior art two cross-sectional schematic;

Fig. 3 is prior art three cross-sectional schematic;

Fig. 4 is prior art four cross-sectional schematic;

Fig. 5 is prior art four schematic perspective view;

Fig. 6 is prior art five cross-sectional schematic;

Fig. 7 is perspective exploded view of the present invention;

Fig. 8 is entire combination cross-sectional schematic of the present invention;

Fig. 9 is partial schematic sectional view of the present invention;

Figure 10 is the cross-sectional schematic of A-A, B-B, C-C, D-D tetra-sections in Fig. 9.

Main element label declaration:

Scrobicular ring week in 1 main shaft 11

2 tool-broaching mechanism 21 inner sleeves

210 inclined-plane 22 outer sleeves

Bulge loop before bulge loop 222 after 221

23 pull bar 3 cutters

31 interior ring edge 1a main shafts

The all 2a tool-broaching mechanisms of scrobicular ring in 11a

21a inner sleeve 210a inclined-plane

211a casting lug thereon 22a outer sleeve

Bulge loop before bulge loop 222a after 221a

3a cutter 31a interior ring edge

21b inner sleeve 212b plane

22b outer sleeve 21c inner sleeve

211c casting lug thereon 213c stripper loop

22c outer sleeve 21d inner sleeve

213d stripper loop 22d outer sleeve

In 223d to the face 224d of pulling outward to the face of pulling

3d cutter

4 main shaft 5 tool-broaching mechanisms

50 pull bar 51 sleeve pull heads

510 external thread sections 511 lead groove

512 ribs 513 through holes

514 blowing-out hole 52 outer sleeves

To the face of pulling in 521 claws 522

523 is outer to card face 6 cutter

61 interior ring edge 7 power transmission shafts

71 water injecting pipeline 72 gas channels

73 pores

Detailed description of the invention

The technology contents used for making the present invention, goal of the invention and the effect reached thereof have more complete and clearly disclose, and hereby in lower detailed description, and see also accompanying drawing and figure number:

First, referring to shown in Fig. 7 ~ Fig. 8, is stereo decomposing and the overall cross-sectional schematic of the tool-broaching mechanism of a kind of cutter of the present invention, and the main corresponding assembling of this cutter 6 is fixed in the tool-broaching mechanism 5 of processing machine main shaft 4, process can drive through main shaft 4, and this tool-broaching mechanism 5 includes:

One sleeve pull head 51, be equipped with in outer peripheral edge and multiplely lead groove 511, and each leading in groove 511 is equipped with a blowing-out hole 514, two corresponding grooves 511 of leading are formed with ribs 512, continue and be provided with external thread section 510 in sleeve pull head 51 end, connect with corresponding group the pull bar 50 starting tool-broaching mechanism 5, and sleeve pull head 51 central authorities has an extremely wide-aperture through hole 513;

One group of outer sleeve 52, formed by linking by multiple claw 521, and corresponding embedding group of each claw 521 is led in groove 511 at sleeve pull head 51, and each claw 521 be provided with by sleeve pull head 51 lead groove 511 push in support card face 523 to the face of pulling 522 and the outer of corresponding inlay card cutter 6 inner ring.

Refer to shown in Fig. 7 ~ Figure 10, when in time assembling, this cutter 6 correspondence is fixedly arranged in main shaft 4, mainly seize on both sides by the arms fixing by tool-broaching mechanism 5, the pull bar 50 that its sleeve pull head 51 end institute group in tool-broaching mechanism 5 connects starts, to make sleeve pull head 51 in pull-down state, and allow the groove 511 of leading on sleeve pull head 51 compress and promote the interior to the face of pulling 522 of outer sleeve 52 claw 521, make its claw 521 along expanding outward by leading groove 511, to allow the outer of claw 521 support the interior ring edge 61 of the corresponding inlay card cutter 6 in card face 523, the object of strong fix cutter 6 so can be reached.And be formed with ribs 512 because of two corresponding leading between groove 511 of sleeve pull head 51, by the design of multiple ribs 512, make it can increase handle of a knife clamping force, in identical tighten up pulling force specification under, handle of a knife holding function can be possessed and sleeve pull head 51 central authorities have larger central through hole footpath (as shown in Figure 10), and the wide-aperture through hole of sleeve pull head 51 central electrode 513 can be provided with the larger power of the corresponding transmission of large-sized power transmission shaft 7, and water injecting pipeline 71 can be provided with in power transmission shaft 7 inside and circulate for cutting fluid, continue, pore 73 is provided with in power transmission shaft 7, and allow between power transmission shaft 7 and water injecting pipeline 71 there is gas channel 72, make it when machining in this cutter 6, and when changing another cutter 6, after the absent-mindedness of this main shaft 4 pull bar 50 power, allow sleeve pull head 51 return, and outer sleeve 52 claw 521 also no longer supports the interior ring edge 61 of swaging clamp tool 6, cutter 6 is allowed to relax and replaceable, and now, gas channel 72 imports air and through power transmission shaft 7 pore 73, the blowing-out hole 514 of sleeve pull head 51, claw 521 and main shaft 4 and cutter 6 push away to draw sword between handle and blow out, with the chip that blowing-out machining produces.

By the above, the composition of these parts is known with use embodiment, and in comparison, have following plurality of advantages, details are as follows for the present invention and existing structure:

1, sleeve pull head is processed into the shape with ribs, has larger through hole footpath (as shown in Figure 10) under same intensity.

2, can the larger power of transmission (power transmission shaft) via pull head center, can be used as feeding or machining uses.

3, claw is accurately separated in point configuration such as pull head ribs, and principal axis balance is accurate, and therefore main shaft can High Rotation Speed.

4, pull head does not need to arrange stripper loop (No. 4997325, the US Patent No. as OTT company) at end face, and therefore, cutter holding device length is shorter, and favourable shortening main axis length, can be applicable to the main shaft of length limited, as right-angle milling head.

5, the interface of pull head and pull bar adopts external screw teeth (No. DE29723331, the patent of BERG company adopts internal screw thread), therefore, central through hole footpath is larger, utilize large through-hole footpath can develop unprecedented function of all kinds, as face (facing head), the right-angle milling head that can automatically exchange, automatic tool measure compensation arrangement etc.

6, because cutter holding device through-hole diameter is comparatively large, except can transmitting larger power, blowing-out air when cutting fluid and Tool changeover also can via central transmission.

7, still possess central water outlet function, improve the shortcoming of prior art non-stop layer effluent functions.

Above act is only the schematic detailed description of the invention of the present invention, and is not used to limit the scope of the invention.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should be included within this patent protection domain.

Claims (2)

1. a tool-broaching mechanism for cutter, is characterized in that, the main corresponding assembling of this cutter is fixed in the tool-broaching mechanism of processing machine main shaft, and can process through main shaft drives, and this tool-broaching mechanism includes:

One sleeve pull head, be equipped with in outer peripheral edge and multiplely lead groove, and two corresponding grooves of leading are formed with ribs, by the design of multiple ribs, make it can increase handle of a knife clamping force, continue and be provided with external thread section in sleeve pull head end, the pull bar starting tool-broaching mechanism is connect with corresponding group, and sleeve pull head central authorities have a through hole, this through hole passes for a power transmission shaft, this power transmission shaft, as tool feeding or processing dynamics use, is provided with water injecting pipeline for cutting fluid circulation, and has gas channel between this power transmission shaft and water injecting pipeline for blowing-out chip in this power transmission shaft;

One group of outer sleeve, this outer sleeve is linked by multiple claw to be formed, and corresponding embedding group of each claw is led in groove at described sleeve pull head, and each claw be provided with by sleeve pull head lead groove push in support card face to the face of pulling and the outer of corresponding inlay card cutter inner ring.

2. the tool-broaching mechanism of cutter as claimed in claim 1, is characterized in that, respectively lead in groove and be respectively equipped with a blowing-out hole.