CN2107338U - Milling clamp - Google Patents

Abstract

A milling clamp relates to an improvement of the milling clamp structure which comprises a clamping body, a clamping nut and a pinchcock jacket. It is mainly characterized in that the medial surface of the pinchcock jacket is of circular conical surface. The milling clamp has the advantages of simple operation, high efficiency, favorableness to knife repairing and it reduces the quantities of the tie rod and is be favorable for standardization.

Description

Milling clamp

The utility model relates to the improvement of milling chuck structure.It comprises collet body, chuck nut, spring chuck.

The clamping method of taper-shank cutter is roughly as follows at present: at first taper-shank cutter is installed on the milling machine spindle by change cone, intermediate sleeve, allow tie rod pass main shaft then and be connected, cutter be fixed to firmly on the main shaft of milling machine, can use cutter to make cutwork with the screw of cutter afterbody.But this method has following shortcoming:

1, troublesome poeration, inefficiency:

When being fixed to main shaft on by tie rod cutter, must operating personnel screw at the milling head top of milling machine, so operating difficulties, inefficiency;

2, the screw of easy damaged cutter afterbody:

When the dismounting cutter, must firmly hit tie rod, so that breaking away from, cutter becomes tapered sleeve, intermediate sleeve, therefore, the afterbody screw that damages cutter happens occasionally, and just can not carry out refacing of cutter;

3, the tie rod number is more:

Because the specification difference of conical milling cutter, corresponding to varying in size of the screw of cutter afterbody, the tie rod of respective numbers just must be set, general milling machine must be provided with four tie rods.

The clamping method of present straight shank milling cutter (generally being that diameter is the cutter of φ below 16) is: by the milling chuck that collet body, chuck nut, collet constituted cutter is fixed, be have simple in structure, characteristics easy and simple to handle, but the medial surface of collet is the open circles cylinder, be that cylinder with the afterbody of staight shank cutter is corresponding, yes is not suitable for the taper shank cutter and uses.

The purpose of this utility model is exactly at the problems referred to above, provides a kind of easy and simple to handle, can reduce tie rod number, widely applicable milling chuck.

The purpose of this utility model is to realize like this, on the structure of the milling chuck that existing straight shank milling cutter is used, do an improvement exactly, the medial surface that is the spring chuck is the open circles conical surface, make its afterbody corresponding with the cone of the taper-shank cutter that is pressed from both sides, and keep other primary structures of existing milling chuck, just can realize above-mentioned purpose of the present utility model.

Major advantage of the present utility model:

1, easy and simple to handle, high efficiency:

The utility model can be fixed cutter at the nut of the bottom turn milling chuck of the milling head of milling machine, and therefore, the dismounting cutter is convenient, high efficiency;

2, be beneficial to the reparation of cutter:

Use milling chuck of the present utility model, the afterbody of its cutter can not established screw (can be center hole), and need not impact the afterbody of cutter, and can make cutter break away from milling chuck, therefore make cutter be difficult to repair because of the damage of the screw of former taper-shank cutter with regard to having avoided;

3, reduce the tie rod number:

Except a tie rod of fixing milling chuck, just no longer need be with other tie rods, the tie rod number than present milling machine use has lacked three at least;

4, be beneficial to standardization:

Milling chuck of the present utility model also can be provided with and be applicable to straight shank milling cutter middle springs chuck, so just can make this milling chuck be common to taper-shank cutter and straight shank milling cutter, for standardization, the generalization of milling chuck provides the condition that makes things convenient for.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of outer sleeve;

Fig. 3 is the cutaway view of outer sleeve;

Fig. 4 is the structural representation of middle springs chuck;

Fig. 5 is the A-A cutaway view of middle springs chuck.

Below in conjunction with accompanying drawing concrete structure of the present utility model is further described:

The utility model comprises collet body 6, chuck nut 8, spring chuck 7.The tail end of collet body 6 has screw 3, the both sides of collet body 6 afterbodys have the keyway 5 corresponding to the positioning key 4 of milling machine spindle 2 respectively, has spring chuck 7 in the head of collet body 6, but the outside of the head of collet body 6 has the chuck nut 8 of fixing spring chuck 7 on collet body 6, and spring chuck 7 contacts with collet body 6 with taper seat.The medial surface of spring chuck 7 is the open circles conical surface 14.

Convenient for dismantling cutter, can touch the briquetting 11 of spring chuck 7 lateral surfaces in the head setting of collet body 6, the push rod 10 that can touch briquetting 11 is set on the chuck nut 8, the side of push rod 10 has back-moving spring 12, chuck nut 8 arranged outside have outer sleeve 9, have inlet grooves 15 and annular groove 16 corresponding to push rod 10 in the outer sleeve 9 respectively.

Use for ease of collet body 6, spring chuck more than 7, middle springs chuck 17 can be set in spring chuck 7, the lateral surface of middle springs chuck 17 is that the medial surface of middle springs chuck 17 is the open circles cylinders corresponding to the handle of a knife of straight shank milling cutter with spring chuck 7 corresponding taper seats.

During use, collet body 6 is fixed on the main shaft 2 of milling machine by tie rod 1.When using taper-shank cutter 13, cutter directly is installed in the spring chuck 7, again turn chuck nut 8, along with the moving of chuck nut 8, spring chuck 7 shrinks, tightly encases cutter, so just can make cutwork.When using straight shank milling cutter, at first cutter is placed in the middle springs chuck 17, then middle elastic jacket 17 is placed in the elastic jacket 7, the action that repeats above-mentioned identical clamp-on tool again gets final product.

During the dismounting cutter, at first mobile outer sleeve 9 to the end of chuck nut 8, the end of push rod 10 is entered in the annular groove 16 by inlet grooves 15, briquetting 11 moves to the lateral surface of spring chuck 7 under the effect of push rod 10, loosening chuck nut 8, briquetting 11 is by the contact-making surface with spring chuck 7, spring chuck 7 is fallen automatically, and spring chuck 7 is free state, and this moment, cutter just can take off cutter in spring chuck 7 under no spring force effect.

Claims (2)

1, milling chuck comprises collet body 6, chuck nut 8, spring chuck 7, and the medial surface that it is characterized in that spring chuck 7 is the open circles conical surface 14.

2, milling chuck according to claim 1 is characterized in that being provided with in the spring chuck 7 middle springs chuck 17.

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