CN102950496A - Broach broaching mechanism - Google Patents

Abstract

The invention relates to a broach broaching mechanism. The broach broaching mechanism mainly comprises a sleeve puller and an outer sleeve consisting of multiple claws. Reinforcing ribs are equipped on the outer circumference of the sleeve puller at the same intervals, a guide groove is formed between each two corresponding reinforcing ribs so that the claws of the outer sleeve can be disposed in the guide grooves and the outer sleeve can connectively sleeved outside of the sleeve puller. The tail end of the sleeve puller is provided with an outer threaded section to be correspondingly assembled with a broaching rod outputting power. Therefore, the sleeve puller is provided with the reinforcing ribs to increase clamping force of a broach handle, and under the condition of identical fastening broaching force, since the connecting portion of the sleeve puller is provided with an outer thread, clamping function and the larger central through hole diameter of the broach handle can be kept, the broach handle can penetrate through a large-size transmission shaft to be used as a broach feed shaft or as spindle cutting power, while the transmission shaft still has functions of air cleaning and cutting liquid center water outlet. In addition, the reinforcing ribs are arranged on the outer circumference of the sleeve puller at the equal intervals, the claws can be accurately separated and guided to move, and the broach broaching mechanism can be used for a high-speed spindle machine tool.

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 for the tool-broaching mechanism on the process tool of toolroom machine, this device is external screw thread by shape and the connecting portion that the sleeve pull head has ribs, can possess handle of a knife holding function and larger central through hole footpath, can pass large-sized power transmission shaft, as tool feeding axle (power transmission shaft) for example face, function etc. is adjusted in automatic tool processing footpath, or with being main shaft machining power, right-angle milling head for example, the power transmission of special dynamic tool apron etc., minute configuration such as pull head periphery ribs can accurately be separated and guide claw and be moved, and can be used for the high-speed main spindle toolroom machine.

Background technology

The main basic function of tool-broaching mechanism in the general tooling system for provide enough pulling force with handle of a knife and main shaft tighten up, provide a datum level to eject cutter when withdrawing from cutter, needing can High Rotation Speed, the handle of a knife cutting fluid can be provided, and easily by front-end of spindle assembling, adjustment, and replacing.

And No. 4997325, its tool-broaching mechanism such as US Patent No., (center line one end sets firmly for start not shown in please refer to the drawing 1, the other end is that start sets firmly state), in main shaft 1, be provided with tool-broaching mechanism 2 correspondences and set firmly cutter 3, and tool-broaching mechanism 2 is made of the outer sleeve 22 of an inner sleeve 21 with the claw formula, when this inner sleeve 21 corresponding drop-down, utilizing inclined-plane 210 heaps to support outer sleeve 22 expands outward, make its outer sleeve 22 rear bulge loop 221 corresponding clips in the interior scrobicular ring week 11 of main shaft 1, and the interior ring edge 31 of outer sleeve 22 front bulge loop 222 corresponding clip cutters 3 and drop-down fixed cutting tool 3; Its shortcoming is:

1, tooling system is hollow short sword handle two sides contact structure, cutter 3 pushes away the tool systematic comparison of drawing sword with 7/24 of existing market use, need higher pulling force, outer sleeve 22 must have enough thickness bearing tensions, when inner sleeve 21 pull heads inwardly spur axially executing a strength, via inclined-plane 210 outer sleeve 22 is outwards backed down, times power effect of generation, therefore, when inner sleeve 21 pull heads are executed a pulling force, except the need bearing tension, also must bear the reaction force that outwards backs down, thus inner sleeve 21 pull heads also must have enough thickness bear the institute strong.The 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 heads are internal screw thread, and pull bar 23 diameters are restricted, and need again by cutting fluid, are 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, enables to reach High Rotation Speed, but because of the separated place at end face, effect is limited, the shortcoming of the method is the length that can increase tool-broaching mechanism again.

In addition, U.S. case US656888 number, (center line one end sets firmly for start not 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 and set firmly cutter 3a, and tool-broaching mechanism 2a is made of the outer sleeve 22a of an inner sleeve 21a and claw formula, this inner sleeve 21a central authorities are provided with between the claw that casting lug thereon 211a is separated in outer sleeve 22a, when this inner sleeve 21a correspondence drop-down, utilizing 210a heap in inclined-plane to support outer sleeve 22a expands outward, make behind its outer sleeve 22a the corresponding clip of bulge loop 221a in the interior scrobicular ring week 11a of main shaft 1, and the interior ring edge 31a of the corresponding clip cutter of bulge loop 222a 3a and drop-down fixed cutting tool 3a before the outer sleeve 22a; Yet, although this structure is equipped with casting lug thereon 211a in inner sleeve 21a interposition that outer sleeve 22a claw is accurate separately, can improve balance and shorten pull head length, but still have and prostatitis technology the 1st, 2 disappearance.

Please consult again shown in Figure 3, general configuration is as aforementioned, only be in contact with one another face formation plane 212b at inner sleeve 21b and outer sleeve 22b claw, using plane 212b comes the equipartition claw to solve the equilibrium problem of High Rotation Speed, compared to US Patent No. 4997325, the short advantage of inner sleeve length is arranged, but still have and prostatitis technology the 1st, 2 disappearance.

Continue, see also shown in Figure 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 that is protruding to inner sleeve 21c centre, outer sleeve 22c claw is separately accurate, can promote balance quality, but still have and prostatitis technology the 1st, 2 disappearance.

At last, please consult again shown in Figure 6, schematic diagram for German DE29723331 patent, this framework is all to come the corresponding cutter that tightens up with times power function in the first pre-structure with previous each structure difference, center-hole diameter is restricted relatively, and adopt times power function in the DE29723331 patent, therefore inner sleeve 21d must impose larger strength, strength is via supporting the face 223d that pulls in the outer sleeve 22d claw, reach cutter to the face 224d compression cutter 3d that pulls outward and tighten up function, because power stream does not apply tensile force to claw so claw thickness can reduce, relative inner sleeve 21d diameter can increase, and its characteristic is that inner sleeve 21d can bear larger pulling force or shorter by larger aperture and inner sleeve 21d.But this patent also has its shortcoming, for therefore this claw is not suitable for high-speed rotary main shaft without accurately separating, is provided with stripper loop and improves balance, the same ideal that do not reach of accuracy though be provided with a stripper loop 213d end face in inner sleeve 21d periphery.

Summary of the invention

The tool-broaching mechanism that the purpose of this invention is to provide a kind of cutter, especially a kind of handle of a knife holding function and larger central through hole footpath of possessing conveniently transmitted power via centre bore, and be 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 processing through main shaft drives, and this tool-broaching mechanism includes:

One sleeve pull head, be equipped with a plurality of grooves of leading in outer peripheral edges, and the two corresponding grooves of leading are formed with ribs, continue in sleeve pull head end and be provided with external thread section, with the pull bar of corresponding winding startup tool-broaching mechanism, and sleeve pull head central authorities have an extremely wide-aperture through hole;

One group of outer sleeve, this outer sleeve are linked by a plurality of claw to be consisted of, and the corresponding embedding group of each claw is the leading in the groove of described sleeve pull head, and each claw is provided with and is subjected to the sleeve pull head to lead the interior outer card face that supports that supports ring in the face of pulling and the corresponding inlay card cutter that groove pushes.

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

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

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

Description of drawings

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 views;

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 among Fig. 9, C-C, four sections of D-D.

The main element label declaration:

11 interior scrobicular ring weeks of 1 main shaft

2 tool-broaching mechanisms, 21 inner sleeves

210 inclined-planes, 22 outer sleeves

221 rear bulge loop 222 front bulge loops

23 pull bars, 3 cutters

31 interior ring edge 1a main shafts

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

21a inner sleeve 210a inclined-plane

211a casting lug thereon 22a outer sleeve

Bulge loop before the bulge loop 222a behind the 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

Support the face 224d that pulls in the 223d and support the face of pulling outward

The 3d cutter

4 main shafts, 5 tool-broaching mechanisms

50 pull bars, 51 sleeve pull heads

510 external thread sections 511 are led groove

512 ribs, 513 through holes

514 blowing-out holes, 52 outer sleeves

Support the face of pulling in 521 claws 522

523 outer card face 6 cutters that support

61 interior ring edges, 7 power transmission shafts

71 water injecting pipelines, 72 gas channels

73 pores

The specific embodiment

For the technology contents, the goal of the invention that make the present invention use and the effect reached thereof have more complete and clearly disclose, hereby in lower detailed description, and see also accompanying drawing and figure number:

At first, see also Fig. 7～shown in Figure 8, be stereo decomposing and the whole cross-sectional schematic of the tool-broaching mechanism of a kind of cutter of the present invention, these cutter 6 main corresponding assemblings are fixed in the tool-broaching mechanism 5 of processing machine main shaft 4, can driving and process through main shaft 4, and this tool-broaching mechanism 5 includes:

One sleeve pull head 51, be equipped with a plurality of grooves 511 of leading in outer peripheral edges, and each is led and is equipped with a blowing-out hole 514 in the groove 511, the two corresponding grooves 511 of leading are formed with ribs 512, continue in sleeve pull head 51 ends and be provided with external thread section 510, with the pull bar 50 of corresponding winding startup tool-broaching mechanism 5, and sleeve pull head 51 central authorities have an extremely wide-aperture through hole 513;

One group of outer sleeve 52, consisted of by linking by a plurality of claws 521, and each claw 521 corresponding embedding group is the leading in the groove 511 of sleeve pull head 51, and each claw 521 is provided with and is subjected to sleeve pull head 51 to lead the interior outer card face 523 that supports that supports pull face 522 and corresponding inlay card cutter 6 interior rings that groove 511 pushes.

See also Fig. 7～shown in Figure 10, when in assembling, these cutter 6 correspondences are fixedly arranged in the main shaft 4, mainly seize on both sides by the arms fixing by tool-broaching mechanism 5, the pull bar 50 of its sleeve pull head 51 terminal institutes winding in tool-broaching mechanism 5 starts, so that sleeve pull head 51 is pull-down state, and allow the groove 511 of leading on the sleeve pull head 51 compress the interior face 522 of pulling that supports that promotes outer sleeve 52 claws 521, make its claw 521 along the outward expansion by leading groove 511, to allow the outer interior ring edge 61 that supports card face 523 corresponding inlay card cutters 6 of claw 521, so can reach the purpose of strong fix cutter 6.And be formed with ribs 512 because of two corresponding 511 of the grooves of leading of sleeve pull head 51, design by a plurality of ribs 512, make it can increase the handle of a knife clamping force, tighten up under the pulling force standard in identical, can possess handle of a knife holding function and sleeve pull head 51 central authorities and have larger central through hole footpath (as shown in figure 10), and the wide-aperture through hole 513 of sleeve pull head 51 central electrodes can be provided with the larger power of large-sized power transmission shaft 7 corresponding transmission, and can be provided with water injecting pipeline 71 in power transmission shaft 7 inside circulates for cutting fluid, continue, be provided with pore 73 in power transmission shaft 7, and allow 71 of power transmission shaft 7 and water injecting pipelines have gas channel 72, make it when machining in this cutter 6, and when changing another cutter 6, after this main shaft 4 pull bars 50 power absent-mindedness, allow sleeve pull head 51 returns, and outer sleeve 52 claws 521 also no longer support the interior ring edge 61 of swaging clamp tool 6, allow cutter 6 absent-mindedness and replaceable, and this moment, gas channel 72 imports air and through power transmission shaft 7 pores 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 and blow out between handle, with the smear metal of blowing-out machining generation.

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

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

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

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

4, pull head need to not arrange stripper loop (such as No. 4997325, the US Patent No. of 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, such as right-angle milling head.

5, the interface of pull head and pull bar adopts external screw teeth (the patent DE29723331 of BERG company number adopt internal screw thread), therefore, the central through hole footpath is larger, utilize the large through-hole footpath can develop unprecedented function of all kinds, measure compensation arrangement etc. such as face (facing head), the right-angle milling head that can automatically exchange, automatic tool.

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

7, still possess the central water outlet function, improve prior art without the shortcoming of central water outlet function.

The above act only is the schematic specific embodiment of the present invention, is not to limit the scope of the invention.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present invention and principle and modification all should be included within this patent protection domain.

Claims (2)

1. the tool-broaching mechanism of a 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 processing through main shaft drives, and this tool-broaching mechanism includes:

One sleeve pull head is equipped with a plurality of grooves of leading in outer peripheral edges, and the two corresponding grooves of leading are formed with ribs, continues in sleeve pull head end to be provided with external thread section, start the pull bar of tool-broaching mechanism with corresponding winding, and sleeve pull head central authorities has a through hole;

One group of outer sleeve, this outer sleeve are linked by a plurality of claw to be consisted of, and the corresponding embedding group of each claw is the leading in the groove of described sleeve pull head, and each claw is provided with and is subjected to the sleeve pull head to lead the interior outer card face that supports that supports ring in the face of pulling and the corresponding inlay card cutter that groove pushes.

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

Images