CN2033314U

CN2033314U - Turnable location milling cutter with special dense gear

Info

Publication number: CN2033314U
Application number: CN 88208544
Authority: CN
Inventors: 桂育鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-07-02
Filing date: 1988-07-02
Publication date: 1989-03-01

Abstract

The face milling cutter used to mechanically process the large plane with weak rigidity like the cylinder body of the automobile and the tractor mainly adopts less teeth number, low precision and unreasonable geometric parameter of the cutting tool, which brings about inhomogeneous stress, is easy to generate the vibration and directly influences the processing surface quality and the improvement of the production efficiency. The utility model provides an improved shaft direction trimming and indexing face milling cutter with special dense gea, and the teeth coefficient (__=__) reaches 0.12. The utility model has the advantages of reasonable design, compact structure, high precision, good manufacturability and high reliability, and the cutting process is stable. This device forms the serialized products which conform to the specific requirement of the indexing face milling cutter GB5342-85.

Description

Special close tooth indexable face milling cutter

The utility model relates to a kind of machining with special close tooth indexable face milling cutter.

Welded type body inner edge flour milling milling cutter or indexable face milling cutter as part production lines such as automobile and tractor cylinder bodies, are generally adopted in the weak big plane of hard parts of present domestic machining.Because lathe and workpiece poor rigidity, cutter tooth number is few, and its end jumps that to jump precision low with the footpath, tool geometrical parameter is selected factors such as unreasonable, cause milling cutter monodentate discontinuity, working angles vibration and workpiece deformation directly influence the raising of machined surface quality and production efficiency.

For solving the problem of above-mentioned existence, common way is to improve the lathe rigidity, adopts close tooth milling cutter, improve the jumping of milling cutter end and jump precision, choose reasonable tool geometrical parameter (0～5 ° of anterior angle, 5 °～10 ° of cutting edge inclinations with the footpath, 60 °～90 ° of tool cutting edge angles), just can improve the cutting situation effectively.Particularly increase cutter tooth number, under feed per minute the same terms, just can reduce monodentate cutting force, make working angles steady.But the indexable milling cutter number of teeth is many more, and the Structural Design Requirement of milling cutter is just compact more, and its difficulty of the raising of milling cutter precision is just big more.

The purpose of this utility model is to provide close tooth of a kind of improved spy and axial fine adjustment type indexable face milling cutter, and it can effectively reduce milling cutter monodentate cutting force, improves the positioning accuracy of milling cutter cutter tooth.Indexable face milling cutter standard GB 5342-85 has only close tooth not have the regulation of special close tooth, and the number of teeth coefficient of its close tooth (ξ=(Z)/(D)) be 0.085.The utility model is because the innovation on structural design for close tooth of spy and axial fine adjustment type indexable face milling cutter, is called for short special close tooth indexable face milling cutter, and its number of teeth coefficient is 0.12, therefore, has realized the Milling Process of special close tooth.

The purpose of this utility model is to realize like this; Below in conjunction with accompanying drawing milling cutter construction, characteristics and feature after improving are described further.

Fig. 1 is a front view, and the outward appearance of one of them cutter tooth of special close tooth indexable face milling cutter and the point of a knife position by the milling cutter center line is described.Fig. 2 is the A-A section of Fig. 1, illustrates that the axial fine setting location of blade (2) is by fine setting locating piece (6), and fine setting braking Xiao (5) and soket head cap screw (7) are formed.Fig. 3 is the B-B section of Fig. 2, and the clamping that blade (2) is described is by pressing down voussoir (3) and trip bolt (4) is formed.Fig. 4 is the C-C section of Fig. 2, illustrates that the clamping of fine setting locating piece (6) is to form with soket head cap screw (7).

The axial fine setting location (see figure 2) of blade (2); Be by fine setting braking Xiao (5): be contained in the female hole of cutter hub (1) cutter troughed belt, when 30 ° of cones of its head were rotated, the side and the blade (2) that promote fine setting locating piece (6) internal taper hole were done axial fine setting along the cutter groove.By soket head cap screw (7), the fine setting locating piece (6) that will have 10 ° of angles of wedge is clamped in (see figure 4) in the cutter groove then.Be characterized in: trimming precision height (caning be controlled in 0.005～0.010 millimeter scope), anufacturability is good, can effectively prevent the axial float of blade (2) and fine setting locating piece (6) during cutting.

The clamping (see figure 3) of blade (2); Be a concentric semicylindrical opening and screw to be arranged, press down the semicylindrical opening that voussoir (3) equally also has a concentric band side platform in cutter hub (1) cutter groove right-angled side faces.What the square groove by trip bolt (4) promoted the semicylindrical opening of the side's of having platform and had 10 ° of angles presses down voussoir (3), and blade (2) is clamped and directly is positioned in the cutter groove, can make blade (2) transposition or replacing when unclamping.Its characteristics: compact conformation is reasonable, and anufacturability is good, clamps solid and reliable.Blade (2) is directly located with the cutter groove bottom, and chain number of rings reduced in size improves milling cutter radial location precision.

In sum: the utility model has 7 bare bones and forms, and it is characterized in that cutter hub (1), presses down voussoir (3), trip bolt (4), and fine setting locating piece (6) is so can realize special close tooth and the axial fine tuning structure of indexable face milling cutter. Its outstanding feature is: the knife-tooth structure compact and reasonable, anufacturability is good, the trimming precision height, clamp solid and reliable, thereby at weak rigidity large planar part, real Show special close tooth Milling Process, improved the stationarity of working angles.

The utility model has formed tandem product, milling cutter diameter: φ 80～φ 500 meets the regulation requirement of indexable face milling cutter standard GB 5342-85.

Claims

1, the close tooth indexable face milling cutter of a kind of spy, its structure are clamping and the micromatic settings that blade is housed in each bar cutter groove on cutter hub, and it is made up of seven bare bones, it is characterized in that:

A. the cutter groove right-angled side faces on the cutter hub (1) has a concentric post hole, half garden and a screw, press down voussoir (3) the post hole, half garden of a concentric band side platform is equally also arranged, what the square groove by trip bolt (4) promoted the post hole, half garden of the side's of having platform and had 10 ° of angles presses down voussoir (3), and blade (2) is clamped and directly is positioned in the cutter groove.

B. finely tuning locating piece (6) has 30 ° of taper holes and 10 ° of angles, and by the fine setting location of (5) 30 ° of cone one sides of fine setting braking Xiao, and the fine setting locating piece (6) that soket head cap screw (7) will have 10 ° of angles is clamped in the cutter groove.