CN2827589Y

CN2827589Y - Cutter chuck

Info

Publication number: CN2827589Y
Application number: CN 200520052358
Authority: CN
Inventors: 杨志平; 李屏; 王社权
Original assignee: Zhuzhou Cemented Carbide Cutting Tools Co Ltd
Current assignee: Zhuzhou Cemented Carbide Cutting Tools Co Ltd
Priority date: 2005-11-04
Filing date: 2005-11-04
Publication date: 2006-10-18
Anticipated expiration: 2015-11-04

Abstract

The utility model discloses a milling chuck which has favorable dustproof effect, and the utility model has favorable clamping effect and rigidity under the condition of strongly milling simultaneously. The utility model mainly comprises a chuck body, a chuck sleeve, a similar needle bearing member which is assembled between the chuck body and the chuck sleeve, dustproof pads and snap rings, wherein the dustproof pads are arranged between one end of the similar needle bearing member and the chuck body, and between the other end of the similar needle bearing member and the chuck sleeve; the end surface of the chuck body is provided with a groove, and a plurality of darkening straight slots which are uniformly distributed in a circumferential direction and are extended along an axial direction and a plurality of annular slots in arrangement along the axial direction are arranged in an inner hole; a head of the chuck sleeve is provided with a protruding part which is matched with the groove at the end surface of the chuck body.

Description

The milling cutter chuck

Technical field

The utility model relates to a kind of milling cutter chuck, especially relates to powerful milling milling chuck.

Background technology

Present milling cutter chuck such as U.S. Pat 6,105,974, US4,721,423 etc., under the state that clamps, the chuck cover directly contacts with the both ends of the surface of collet body or compresses by a rubber washer, although class needle bearing spare two ends are provided with the dustproof structure in milling chuck, but relax, change under the situation of milling cutter at milling chuck, the end face of chuck cover and collet body separates or the chuck cover separates with rubber washer, and dirt and iron filings still may enter class needle bearing spare by this gap location, thereby can influence the precision or even the use of milling chuck; Circularity and linearity for the slotting cutter handle of a knife of the endoporus of collet body and clamping have very high requirement, otherwise influence the contact rate of collet body and slotting cutter handle of a knife, thereby influence the result of use of cutter; On the endoporus hole wall of collet body, only have perfectly straight groove such as US6 usually, 105,974, US4,721,423, US4,630,980, or the deep trouth such as oblique of one section circumference, as US4,721,423, in order to reach good clamping effect, need to reduce the wall thickness of collet body to increase the clamping force that the collet body distortion produces, in order to allow collet body have the wall thickness that favorable rigidity then needs to increase collet body, good clamping effect and the contradiction intractable between the favorable rigidity are good, under the situation of especially powerful milling.

The utility model content

The purpose of this utility model is exactly at the problems referred to above, and a kind of have good dustproof effect, the milling chuck that has good clamping effect and rigidity simultaneously under powerful milling situation are provided.

Milling chuck of the present utility model mainly comprises collet body, chuck cover, be fitted to class needle bearing spare between the two and place dust-proof cushion, snap ring between class needle bearing spare two ends, collet body and the chuck cover, it is characterized in that: the end face of described collet body is provided with groove, and design has some uniform and axially extended straight trough and several cannelures of arranging vertically of deepening of circumferencial direction in the endoporus; The head of described chuck cover is provided with the extension that matches with described groove.

Collet body end face depth of groove is 6mm～25mm, and the extension length of chuck cover head is 5mm～22mm.

The axis angle θ value that deepens straight trough and collet body is 0 °＜θ≤5 °.

The degree of depth L value of cannelure is 0＜θ≤6mm.

Because the design of the end face of collet body has a groove, end face at the chuck cover designs a ledge, both match, even under the milling head relaxed state, chuck cover ledge has part all the time among the groove of collet body, dust, iron filings can't enter class needle bearing spare by chuck cover and collet body end clearance, influence the precision or even the use of milling chuck, thereby have good dustproof effect.Design has some the uniform and axially extended straight troughs that deepen of circumferencial direction in the endoporus of collet body, the i.e. groove that progressively increases of the degree of depth and several cannelures of arranging vertically vertically, similar right-angled intersection, make collet body have good shell-shaped deformation, thereby can under the situation that guarantees equal clamping force, suitably increase the collet body wall thickness, improve rigidity; The groove with variable depth and the cannelure of the similar right-angled intersection of the bore design of collet body have reduced the processing request to the collet body endoporus simultaneously, have also improved the clamping contact rate.

Description of drawings

Fig. 1 is the axial half sectional view of milling chuck of the present utility model;

Fig. 2 is the partial enlarged drawing of A portion among Fig. 1;

Fig. 3 is the partial sectional view of collet body 1 head;

Fig. 4 is the right view of Fig. 3;

Fig. 5 is the axial half sectional view of chuck cover 2.

Specific implementation method

Shown in Fig. 1-5, milling cutter chuck of the present utility model mainly comprises collet body 1, chuck cover 2, is fitted to class needle bearing spare 3 between the two and places class needle bearing spare two ends, collet body dust-proof cushion 4,5 and the

snap ring

6,7 between overlapping with chuck.The end face 1a of collet body is provided with groove 1b, and the degree of depth is 6mm～25mm, and head periphery 1c has designed seam and annular groove, and dust-proof cushion 4 and snap ring 6 install respectively on seam and annular groove; The head 2a extension 2b of chuck cover 2 matches with groove 1b, and length is 5mm～22mm, and the same design of head inner headed face 2d has seam and annular groove, is set with dust-proof cushion 5 and snap ring 7.As get the dark 17mm of collet body groove 1b, and chuck overlaps the long 13mm of 2 extension 2b, and under the state that milling chuck clamps, chuck overlaps 2 extension 2b and stretches into fully among the collet body groove 1b; Under the loose state of milling chuck, collet body and chuck cover end clearance are 10mm to the maximum, and chuck overlaps 2 extension 2b and still has 3mm to stay in the collet body groove 1b.Chuck cover ledge has part all the time among the groove of collet body like this, and dust, iron filings can't enter class needle bearing spare by chuck cover and collet body end clearance.

Design has six uniform and axially extended straight trough 1d and several cannelure 1e that arrange vertically of deepening of circumferencial direction among the endoporus 1c of collet body, and spatial class is like right-angled intersection; The axis angle θ that deepens straight trough 1d and collet body 1 gets 0 °＜θ≤5 °, promptly deepens straight trough 1d degree of deepening vertically, and the degree of depth h3 of cannelure 1e then gets 0＜θ≤6mm.The design of similar right-angled intersection makes collet body have good shell-shaped deformation, thereby can suitably increase the collet body wall thickness under the situation that guarantees equal clamping force, improves the milling chuck rigidity; Simultaneously also reduce collet body endoporus machined surface, reduced the difficulty of processing of collet body endoporus and milling handle, improved the clamping face contact rate again.

Claims

1, a kind of milling cutter chuck, mainly comprise collet body (1), chuck cover (2), be fitted to class needle bearing spare (3) between the two and place dust-proof cushion (4,5), snap ring (6,7) between class needle bearing spare (3) two ends, collet body (1) and the chuck cover (2), it is characterized in that: the end face (1a) of described collet body (1) is provided with groove (1b), and design has some uniform and axially extended straight trough (1d) and several cannelures of arranging vertically (1e) of deepening of circumferencial direction in the endoporus (1c); The head (2a) of described chuck cover (2) is provided with the extension (2b) that matches with described groove (1b).

2, milling cutter chuck as claimed in claim 1 is characterized in that: described collet body end face groove (1b) degree of depth h1 is 6mm～25mm, and extension (2b) the length h2 of described chuck cover head is 5mm～22mm.

3, milling cutter chuck as claimed in claim 1 is characterized in that: the axis angle θ value that deepens straight trough (1d) and collet body (1) of described collet body endoporus is 0 °＜θ≤5 °.

4, milling cutter chuck as claimed in claim 1 is characterized in that: the degree of depth h3 value of the cannelure of described collet body endoporus (1e) is 0＜θ≤6mm.