CN206104995U - Milling cutter presss from both sides cover - Google Patents

Abstract

The utility model relates to a plain -milling machine appurtenances field discloses a milling cutter presss from both sides cover. This press from both sides the cover including tapering cover down, go up tapering cover and dabber, the front portion of dabber has the long conical surface, the rear portion of dabber has the short conical surface, the length of the long conical surface is greater than the length of the short conical surface, all two at least groovings have been seted up along the axial on the long conical surface and the short conical surface, the milling cutter mounting hole has been seted up along the axial in the center of dabber, the tapering cover forms the dabber installation cavity with last tapering cover through threaded connection and in inside down, the dabber is installed in the dabber installation cavity, lower tapering cover inner wall and the long conical surface adaptation that contacts, go up tapering cover inner wall and the short conical surface adaptation that contacts, the rear portion periphery that goes up the tapering cover has the tapering of exporting main shaft looks adaptation with the milling machine. Adopt that this milling cutter presss from both sides cover's milling depth is once multiplicable to be 1 4 mm, can effectively improve the work piece machining efficiency, processing the qualification rate, reduce the phenomenon of forging a knife, reduce the cutter loss.

Description

Milling cutter chuck

Technical field

This utility model is related to plain-milling machine appurtenances field, especially a kind of milling cutter chuck.

Background technology

Commonly used drill chuck milling cutter chuck is to coordinate fastening with drill chuck internal taper hole with cone bar in the prior art Use, there is following drawback in the processing of little keyway：

1. due to being that in milling workpiece, drill chuck clamps the limited strength of cutter, milling using drill point set clamping milling cutter The larger drill chuck that easily causes of depth comes off from cone bar, and big cutting depth, a milling can not be used when causing milling The largest of about between 0.25-1.5 ㎜, less milling tool depth must select less to depth, because less its rotation of milling cutter external diameter Rotary speed will be higher, and cutting depth must be less, so the too little working (machining) efficiency of cutting output is just very low, for batch machining key Groove will affect work pieces process progress.

2. due to easily being made brill jacket wear eccentric by the effect of cutting force process simultaneously in so that the swing of milling cutter compared with Greatly, the keyway size for milling out will be increased, and affect the crudy and qualification rate of workpiece.

3. the service life of milling cutter, the particularly less milling cutter of external diameter can also be reduced, and cutting depth is somewhat easy for a little louder Forge a knife, and little milling cutter is too little cannot sharpen, only scrap, the price of milling cutter is somewhat expensive so as to increased cost waste.

As shown in figure 1, ER collet chucks are also disclosed in prior art, which is widely used in boring, milling, brill, tapping, mill engraving etc. and adds Work.The mounting means of ER collet chucks is as follows：

1. ER collet chucks are put in pressure cap, gently rotate jump ring, treated in the recessed jump-ring slot of pressure cap eccentric part, it is uniform to exert oneself Promote jump ring, you can load in pressure cap.

2. jump ring and pressure cap are installed along with collet body or machine tool chief axis, after cutter cylindrical shank portion is cleaned, load folder Hold in hole, using spanner uniformly exert oneself fastening pressure cap, can use till cutter is clipped, never do not installing cutter fastening Pressure cap, in order to avoid damage jump ring.

ER collet chucks have bigger chucking power relative to drill chuck milling cutter chuck, and clamp precision is also more preferable.But, in ER cylinders Folder nose cone length is short, taper is big, is engaged with jump-ring slot and mainly plays the role of positioning so as to during fastening pressure cap, energy Enough ensure installation accuracy, it is that length positioned at rear end is longer, the less conical section of taper which acts primarily as clamping, therefore milling cutter quilt The position of clamping rearward, causes the swing of milling cutter larger, the same crudy and qualification rate for affecting workpiece, and easily causes milling Knife is scrapped.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of chucking power greatly, can effectively reduce milling cutter swing Milling cutter chuck.

Milling cutter chuck disclosed in this utility model, including lower coning sleeve, upper coning sleeve and mandrel, the anterior tool of the mandrel The rear portion for having the long conical surface, the mandrel has the short conical surface, and the length of the long conical surface is more than the length of the short conical surface, the long conical surface With offer at least two groovings on the short conical surface vertically, the grooving is uniformly distributed along the side face of mandrel, the mandrel Center offers milling cutter installing hole vertically；

The lower coning sleeve is threaded connection with upper coning sleeve and internally forms mandrel installation cavity, and the mandrel is installed Intracavity is installed in mandrel, the lower coning sleeve inwall contacted with the long conical surface and be adapted to, the upper coning sleeve inwall and short conical surface phase Contact adaptation, the rear portion periphery of the upper coning sleeve export the taper that main shaft is adapted with milling machine.

Preferably, three groovings are offered respectively on the long conical surface and the short conical surface.

Preferably, the range of taper of the long conical surface and the short conical surface is 0.5～0.6.

Preferably, the axial length of the long conical surface is 25～30mm, and the axial length of the short conical surface is 12～15mm.

Preferably, the lower coning sleeve and upper coning sleeve periphery are provided with the clamping part for being easy to rotational fastener.

The beneficial effects of the utility model are：The milling cutter chuck makes mainly to accommodate site of action by changing mandrel shape Reach, is enhanced the intensity of clamping milling cutter, can select slightly larger cutting output, and its milling depth can once increase as 1-4 ㎜, can effectively improve working (machining) efficiency, the passing rate of processing of workpiece；Reduction is forged a knife phenomenon, lowers cutter loss, is particularly well-suited to dress Press from both sides little milling cutter.

Description of the drawings

Fig. 1 is the schematic diagram that the ER of prior art presss from both sides cylinder；

Fig. 2 is schematic diagram of the present utility model；

Fig. 3 is the schematic diagram of core cylinder of the present utility model；

Fig. 4 is the top view of core cylinder of the present utility model；

Fig. 5 is the schematic cross-section of lower coning sleeve of the present utility model；

Fig. 6 is the top view of upper coning sleeve of the present utility model.

Reference：Upper coning sleeve 1, clamping plane 11, lower coning sleeve 2, mandrel 3, the long conical surface 31, the short conical surface 32, milling cutter Installing hole 33, grooving 34, milling cutter 4.

Specific embodiment

Below in conjunction with the accompanying drawings this utility model is further illustrated.

As shown in Fig. 2 milling cutter chuck disclosed in this utility model, including lower coning sleeve 2, upper coning sleeve 1 and mandrel 3, institute The front portion for stating mandrel 3 has the long conical surface 31, and the length that the rear portion of the mandrel 3 has the short conical surface 32, the long conical surface 31 is more than The length of the short conical surface 32, offers at least two groovings 34, the grooving vertically on the long conical surface 31 and the short conical surface 32 34 are uniformly distributed along the side face of mandrel 3, and the center of the mandrel 3 offers milling cutter installing hole 33 vertically；

The lower coning sleeve 2 is threaded connection with upper coning sleeve 1 and internally forms mandrel installation cavity, the mandrel 3 Be installed on mandrel and intracavity be installed, 2 inwall of lower coning sleeve contacted with the long conical surface 31 and be adapted to, 1 inwall of upper coning sleeve and The short conical surface 32 contacts adaptation, and the rear portion periphery of the upper coning sleeve 1 exports the taper that main shaft is adapted with milling machine.

Due to being the long conical surface 31 positioned at mandrel 3 front end, in fastener cycle, the long conical surface 31 in the axial direction deformation quantity compared with Greatly, therefore, jump-ring slot cannot be set to positioning core axle 3 as ER folder cylinders in 31 rear end of the long conical surface, therefore, for convenience of mandrel 3 regulations in the coning sleeve, after needing when mounted first milling cutter 4 is installed in milling cutter chuck, then by milling cutter chuck entirety It is installed on the output main shaft of milling machine by the tapered portion at the rear portion of upper coning sleeve 1.During concrete installation milling cutter 4, first by milling cutter 4 It is assembled in the milling cutter installing hole 33 of the corresponding mandrel 3 of corresponding size, then mandrel 3 is positioned over into lower coning sleeve 2 and upper Between coning sleeve 1, make that the long conical surface 31 of mandrel 3 is relative with lower coning sleeve 2, the short conical surface 32 is relative with upper coning sleeve 1, then will under Coning sleeve 2 and upper coning sleeve 1 are threaded connection and fasten, and need to observe the whether accurate positioning of milling cutter 4 in fastener cycle, if Milling cutter 4 is glanced off, then need to unclamp lower coning sleeve 2 and upper coning sleeve 1, then be adjusted.As shown in Figure 5 and Figure 6, for convenience Fastening coning sleeve, the lower coning sleeve 2 and 1 periphery of upper coning sleeve are provided with the clamping part for being easy to rotational fastener, the clamping Portion includes two symmetrical clamping planes 11.

The long conical surface 31 and the short conical surface 32 are provided with grooving 34 to ensure to produce powerful folder to milling cutter 4 under squeezing action Holding force, grooving 34 at least need more than 2, and process for convenience, are offered on the long conical surface 31 and the short conical surface 32 respectively Three groovings 34.

The taper and length of the long conical surface 31 and the short conical surface 32 directly affects chucking power, if taper is excessive, conical surface length is too short, Be easily caused chucking power not enough, and if taper is too small, conical surface length is long, then can not only cause the long of chuck entire length, and Can increase the difficulty for installing positioning, and it is preferred that, the range of taper of the long conical surface 31 and the short conical surface 32 is 0.5～ 0.6.The axial length of the long conical surface 31 is 25～30mm, and the axial length of the short conical surface 32 is 12～15mm.

Claims (5)

1. milling cutter chuck, it is characterised in that：Including lower coning sleeve (2), upper coning sleeve (1) and mandrel (3), the mandrel (3) The anterior rear portion with the long conical surface (31), the mandrel (3) has the short conical surface (32), and the length of the long conical surface (31) is more than short At least two groovings (34), institute are offered on the length of the conical surface (32), the long conical surface (31) and the short conical surface (32) vertically The side face that grooving (34) is stated along mandrel (3) is uniformly distributed, and the center of the mandrel (3) offers milling cutter installing hole vertically (33)；

The lower coning sleeve (2) is threaded connection with upper coning sleeve (1) and internally forms mandrel installation cavity, the mandrel (3) it is installed on mandrel and intracavity is installed, lower coning sleeve (2) inwall is contacted with the long conical surface (31) and is adapted to, the upper coning sleeve (1) inwall is contacted with the short conical surface (32) and is adapted to, and the rear portion periphery of the upper coning sleeve (1) is with mutually fitting with milling machine output main shaft The taper matched somebody with somebody.

2. milling cutter chuck as claimed in claim 1, it is characterised in that：Opened on the long conical surface (31) and the short conical surface (32) respectively It is provided with three groovings (34).

3. milling cutter chuck as claimed in claim 1, it is characterised in that：The long conical surface (31) and the taper model of the short conical surface (32) Enclose and be 0.5～0.6.

4. milling cutter chuck as claimed in claim 3, it is characterised in that：The axial length of the long conical surface (31) is 25～30mm, short The axial length of the conical surface (32) is 12～15mm.

5. milling cutter chuck as claimed in claim 1, it is characterised in that：The lower coning sleeve (2) and upper coning sleeve (1) periphery are equal The clamping part for being easy to rotational fastener is provided with, the clamping part includes two symmetrical clamping planes (11).