CN201385142Y

CN201385142Y - Mechanical clamped counter bit tool

Info

Publication number: CN201385142Y
Application number: CN200920063895U
Authority: CN
Inventors: 彭韧; 李赤兵; 宾雪蓉
Original assignee: CHANGSHA PUMP WORKS Co Ltd
Current assignee: CHANGSHA PUMP WORKS Co Ltd
Priority date: 2009-03-31
Filing date: 2009-03-31
Publication date: 2010-01-20
Anticipated expiration: 2019-03-31

Abstract

The utility model discloses a mechanical clamped counter bit tool comprising a tool bit (1), a tool bar (3) and blades, wherein the tool bit (1) is uniformly provided with a plurality of blade grooves (7) along a circumferential direction, and the blade grooves (7) are a flat surface perpendicular to the center of the tool bit (1); the blades are arranged in the blade grooves (7), the rake faces of the blades form an inclination angle from 0 DEG to 20 DEG with the center line of the tool bit (1), the main cutting edges of the blades are deviated from the center line of the tool bit (1), and the blades form negative rakes and positive postcornus of the main cutting edges and the negative rakes and the positive postcornus of side edges. The utility model is to solve the technical problem of providing the mechanical clamped counter bit tool with the repeated using tool bit (1), large chip removal space, long service life, stable work and convenient load and unload.

Description

A kind of machine folder counterbit instrument

Technical field

The utility model relates to a kind of machine folder counterbit instrument, particularly relates to a kind of machine folder counterbit instrument that is adapted to the processing of plane and counterbore.

Background technology

The cutter head of present machine folder counterbit instrument can not be reused, and the chip removal space is little, and perishable blade needs sharpening, and the non-homogeneous layout of blade makes lathe work uneven steady, and loading and unloading are inconvenient during anti-ream counterbore.

The utility model content

Technical problem to be solved in the utility model provides that a kind of cutter head can be reused, the chip removal space is big, long service life, stable working, machine folder counterbit instrument easy to loading and unloading.

In order to solve the problems of the technologies described above, the machine folder counterbit instrument that the utility model provides, comprise cutter head, knife bar and blade, circumferencial direction along described cutter head evenly offers several insert grooves, described insert groove is a plane with described cutter head central vertical, described blade is the square blade, described square blade is installed in the described insert groove, the center line angle of inclination of the rake face of described blade and described cutter head is 0 °～20 °, the main cutting edge of described blade and the centerline offset of described cutter head, described blade are formed with main cutting edge negative rake and positive relief angle, side edge negative rake and positive relief angle.

The center line angle of inclination of the sidewall of described insert groove and described cutter head is 0 °～20 °, and the insert groove of described inclination and biasing can make described square blade form major cutting edge and side edge negative rake and positive relief angle automatically.

Described cutter head adopts the feather joint mode of protruding, the described cutter head band of described knife bar band ear ear groove to be connected with described knife bar.

Adopt the machine folder counterbit instrument of technique scheme, the machine clip variable-position blade is evenly arranged, the lathe stable working.Guarantee that no relief angle blade does not need sharpening, and help protecting point of a knife, improve blade service life; Load and unload easy; The syndeton interchangeability height of counterbit has reduced the kind of cutter head and knife bar; The clamped cutting bit sheet is convenient to the recycling of carbide alloy; The service life that 8 swords of clamped cutting bit sheet have improved blade; Cutter head structure chip removal space is big, and blade stretches out not quite, is difficult for bumping the breaking sheet; Cutter head is reusable.

This utility model is specially adapted to the processing of bolt and nut counterbore, protruding minor official, the various lubricating cup of foundation bolt, oil ga(u)ge counterbore, lifting bolt counterbore, straight tube and taper pipe thread counterbore.

In sum, technical problem to be solved in the utility model provides that a kind of cutter head can be reused, the chip removal space is big, long service life, stable working, machine folder counterbit instrument easy to loading and unloading.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model structural upright schematic diagram;

Fig. 3 is the cutter head structure schematic diagram;

Fig. 4 is the cutter head structure vertical view;

Fig. 5 is the cutter head structure cutaway view;

Fig. 6 is the lever structure schematic diagram.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, cutter head 1 is provided with mortise 5 and ear groove 6, and it is protruding 9 that knife bar 3 is provided with tenon 8 and ear, and cutter head 1 and knife bar 3 adopt that knife bars 3 band ears are protruding 9, the feather joint mode of cutter head 1 band ear groove 6 is connected.Circumferencial direction along cutter head 1 evenly offers two insert grooves 7, insert groove 7 is the planes with the cutter head central vertical, the center line angle of inclination 10 of the sidewall of insert groove 7 and cutter head 1 is 0 °～20 °, square blade 2 is installed in the insert groove 7 by screw 4, the center line angle of inclination of the rake face of square blade 2 and cutter head 1 is 0 °～20 °, the centerline offset of the main cutting edge of square blade 2 and cutter head 1, square blade 2 are formed with main cutting edge negative rake and positive relief angle, side edge negative rake and positive relief angle automatically.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, cutter head 1 is connected employing " tenon ear " structure with knife bar 3.During clamping cutter head 1, the insertion of aliging of the tenon 8 of the mortise 5 of cutter head 1 and ear groove 6 positions and knife bar 3 and protruding 9 positions of ear is changeed an angle and is promptly installed.Can extract out toward revolution one angle.The blade installation site of cutter head 1 is that circumferencial direction is evenly opened two insert grooves 7, this insert groove 7 makes that the main sword of each square blade 2 is contained in the plane vertical with the cutter head center line, the rake face of square blade 2 and cutter head center line tilt an angle, square blade 2 main cutting edge and cutter head centerline offset form main cutting edge negative rake and positive relief angle, side edge negative rake and positive relief angle automatically.

" tenon " is cylindrical." ear is protruding " comprises all and protrudes shape, as circle, flute profile, keyway type etc." ear groove " comprises all shapes, as circle, flute profile, keyway type etc.

The sidewall of the insert groove of cutter head both can also can be setovered and tilt with central lines.The angle of inclination of the sidewall of the insert groove of cutter head is 0 °～20 °.

Claims

1, a kind of machine folder counterbit instrument, comprise cutter head (1), knife bar (3) and blade, it is characterized in that: the circumferencial direction along described cutter head (1) evenly offers several insert grooves (7), described insert groove (7) is a plane with described cutter head central vertical, described blade is installed in the described insert groove (7), the center line angle of inclination of the rake face of described blade and described cutter head (1) is 0 °～20 °, the centerline offset of the main cutting edge of described blade and described cutter head (1), described blade are formed with main cutting edge negative rake and positive relief angle, side edge negative rake and positive relief angle.

2, machine folder counterbit instrument according to claim 1, it is characterized in that: described blade is square blade (2), the center line angle of inclination (10) of the sidewall of described insert groove (7) and described cutter head (1) is 0 °～20 °, and the insert groove of described inclination and biasing (7) can make described square blade (2) form major cutting edge and side edge negative rake and positive relief angle automatically.

3, machine folder counterbit instrument according to claim 1 and 2 is characterized in that: described cutter head (1) adopts the feather joint mode of described knife bar (3) band ear protruding (9), described cutter head (1) band ear groove (6) to be connected with described knife bar (3).