CN203900515U - Telescopic inner conical surface machining boring cutter - Google Patents

Abstract

A telescopic inner conical surface machining boring cutter comprises a cutter handle and a cutter rod. The cutter rod is sleeved by the cutter handle, the cutter rod and the cutter handle are connected through a connection pin, an upper locking nut is arranged on the cutter handle, a lower locking nut is arranged on the cutter rod, a movable cutter block is arranged in the cutter rod, a movable blade is fixedly installed on the movable cutter block, the movable cutter block and the cutter rod are movably connected through a pin shaft, a spring is arranged between the cutter rod and the movable cutter block, one end of the spring abuts against the movable cutter block, the other end of the spring abuts against an adjusting screw fixedly installed on the cutter rod, an inclined face is arranged at the tail end of the cutter handle, and an inclined face matched with the inclined face at the tail end of the cutter handle is arranged on the movable cutter block. The boring cutter can be installed on a drilling machine conveniently and quickly to finish machining of the inner conical surface of a hole, and is high in machining efficiency, good in inner conical surface machining consistency and capable of effectively ensuring machining accuracy.

Description

Scalable inner conical surface processing boring cutter

Technical field

The utility model relates to field of machining, particularly a kind of telescopic boring cutter that can be used for inner conical surface in machining hole.

Background technology

In the process of certain part, need under the aperture of part, process the inner conical surface of 2 × 15 ° of, because volume of part is large and profile is irregular, if process this inner conical surface on boring machine, need to workpiece, centering be installed in first being processed, to ensure the machining accuracy of inner conical surface, cause the installation of every workpiece all to need to expend a large amount of time, working (machining) efficiency is low; If process on upright drill, the inner conical surface quality in hole is difficult to again ensure.

Utility model content

The purpose of this utility model is to solve above technical problem, provide a kind of can be quickly and easily on upright drill the scalable boring cutter of inner conical surface in processing work hole.

For solving the problems of the technologies described above, the utility model has adopted a kind of scalable inner conical surface processing boring cutter, comprise handle of a knife and knife bar, described knife bar is enclosed within on handle of a knife, between described knife bar and handle of a knife, connect by connecting pin, on described handle of a knife, be provided with upper locking nut, on described knife bar, be provided with lower locking nut, in described knife bar, be provided with movable blade piece, on described movable blade piece, be installed with movable blades, between described movable blade piece and knife bar, be flexibly connected by bearing pin, between described knife bar and movable blade piece, be provided with spring, movable blade piece is withstood in described spring one end, the other end withstands in the adjustment screw being fixedly mounted on knife bar, described handle of a knife tail end is provided with inclined-plane, on described movable blade piece, be provided with the inclined-plane matching with handle of a knife tail end inclined-plane.

Further, in the utility model, described knife bar lower end is installed with location bulb.

The beneficial effect that the utility model has: by the setting of telescopic movable cutter head, can quickly and easily boring cutter be arranged on to the processing that completes inner conical surface in hole on drilling machine, working (machining) efficiency is high, the high conformity of inner conical surface processing, can effectively ensure machining accuracy, and the overhang control machining amount of the movable cutter head of capable of regulating, further ensure the crudy of internal taper hole.

Brief description of the drawings

Fig. 1 is the utility model structural representation.

In figure: 1, handle of a knife, 2, upper locking nut, 3, connecting pin, 4, lower locking nut, 5, knife bar, 6, movable cutter head, 7, bearing pin, 8, adjustment screw, 9, spring, 10, location bulb, 11, movable blade piece, 12, workpiece, 13, handle of a knife inclined-plane, 14, movable blade piece inclined-plane.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is further described.

With reference to Fig. 1, for the scalable inner conical surface processing of one boring cutter, comprise handle of a knife 1 and knife bar 5, described knife bar 5 is enclosed within on handle of a knife 1, between described knife bar 5 and handle of a knife 1, connect by connecting pin 3, on described handle of a knife 1, be provided with upper locking nut 2, on described knife bar 5, be provided with lower locking nut 4, in described knife bar 5, be provided with movable blade piece 11, on described movable blade piece 11, be installed with movable blades 6, between described movable blade piece 11 and knife bar 5, be flexibly connected by bearing pin 7, between described knife bar 5 and movable blade piece 11, be provided with spring 9, movable blade piece 11 is withstood in described spring 9 one end, the other end withstands in the adjustment screw 8 being fixedly mounted on knife bar 5, described handle of a knife 1 tail end is provided with inclined-plane 13, on described movable blade piece 11, be provided with the inclined-plane 14 matching with handle of a knife tail end inclined-plane 13.

In the utility model, described knife bar 5 lower ends are installed with location bulb 10.

This boring cutter is mainly made up of handle of a knife 1 and movable cutter head 6, and handle of a knife 1 matches with the mohs tapered bore of vertical drilling spindle, and knife bar 5 rotates in company with handle of a knife 1 together by connecting pin 3, and can move up and down along handle of a knife 1.Movable blade piece 11 embeds in knife bar body groove, and connects with bearing pin 7, and movable blade piece 11 can swing around bearing pin 7.Before machining, movable blade piece 11, under the effect of spring 9, tightens in knife bar 5 grooves, and the pressure of spring 9 can suitably be adjusted by adjustment screw 8.In the time of machining, owing to being subject to cutter, the oblique prone thrust of 1 tail end, forces the movable cutter head 6 being arranged on movable blade piece 11 to stretch out knife bar 5, carries out the machining of inner conical surface.By adjusting the position of upper and lower locking nut 2,4, the overhang of control activity cutter head 6.The location bulb 10 of knife bar 5 end faces contacts with workpiece 14 bottom, the hole conical surfaces, plays positioning action axially, radially.

Add man-hour, first make knife bar 5 decline with vertical drill main shaft handle of a knife 1, and enter in the blind hole of having processed on workpiece 12, until the location bulb 10 of knife bar 5 ends contacts with the blind hole bottom conical surface.Make handle of a knife 1 continue to decline, until handle of a knife 1 tail end inclined-plane 13 is pressed against on the inclined-plane 14 of movable blade piece 11, compressing activity cutter head 6 is protruding, machining inner conical surface.Now lower locking nut 4 is controlled the position that handle of a knife 1 declines, i.e. the overhang of control activity cutter head 6, the crudy of guarantee inner conical surface.

After processing, handle of a knife 1 rises, and handle of a knife 1 inclined-plane leaves movable blade piece 11 inclined-planes, and now movable blade piece 11, under the thrust of spring 9, rotates around bearing pin 7, is retracted in knife bar 5 grooves.Along with handle of a knife 1 continues to rise, connecting pin 3 contacts with upper locking nut 2, and with cutter, 5 rise together, leave workpiece 12, thereby complete the processing of inner conical surface.

Claims (2)

1. a scalable inner conical surface processing boring cutter, comprise handle of a knife and knife bar, it is characterized in that: described knife bar is enclosed within on handle of a knife, between described knife bar and handle of a knife, connect by connecting pin, on described handle of a knife, be provided with upper locking nut, on described knife bar, be provided with lower locking nut, in described knife bar, be provided with movable blade piece, on described movable blade piece, be installed with movable blades, between described movable blade piece and knife bar, be flexibly connected by bearing pin, between described knife bar and movable blade piece, be provided with spring, movable blade piece is withstood in described spring one end, the other end withstands in the adjustment screw being fixedly mounted on knife bar, described handle of a knife tail end is provided with inclined-plane, on described movable blade piece, be provided with the inclined-plane matching with handle of a knife tail end inclined-plane.

2. scalable inner conical surface processing boring cutter according to claim 1, is characterized in that: described knife bar lower end is installed with location bulb.