CN202668206U

CN202668206U - Cutting cutterhead for machining ultra-slender shaft

Info

Publication number: CN202668206U
Application number: CN2012203043147U
Authority: CN
Inventors: 毛江峰; 应跃; 何财林
Original assignee: Zhejiang Industry Polytechnic College
Current assignee: Zhejiang Industry Polytechnic College
Priority date: 2012-06-25
Filing date: 2012-06-25
Publication date: 2013-01-16
Anticipated expiration: 2022-06-25

Abstract

The utility model discloses a cutting cutterhead for machining an ultra-slender shaft. The cutting cutterhead for machining the ultra-slender shaft comprises a bearing pedestal, a cutterhead shell, cutters, a tensioning sleeve and a guide sleeve, wherein the cutterhead shell is arranged on a bearing of the bearing pedestal; the cutters are fixed on a tool apron on the end surface of one side of the cutterhead shell, and the end surface of the other side of the cutterhead shell is connected with a spindle of a lathe through a bolt and a flange; the tensioning sleeve is fixed on the bearing pedestal through a fixing pin, and is radially provided with pressure springs, and heads of the pressure springs are connected with steel balls and point to the axle center of the tensioning sleeve; and the guide sleeve is fixed on the end surface of one side, which is far away from the cutters, of the tensioning sleeve through bolts. The utility model has the advantages that 1) the cutting cutterhead has a simple structure, is convenient to manufacture, and is low in equipment cost; 2) the double cutters are used for cutting, the cutting forces are mutually offset, and the cutters are stable during cutting, so the machining quality of workpieces is ensured; and 3) the cutters do rotary motion, the workpices do feed movement, and the cutting is similar to thread whirling, so that the machining efficiency is high.

Description

The Cutting tool of processing superfine major axis

Technical field

The utility model relates to a kind of Cutting tool of processing superfine major axis.

Background technology

In turning processing, processing slim axle and superfine shaft be a technical barrier often, generally all adopts workpiece rotates, cutter is done feed motion method to finish the processing of slender axles; Processing request according to slender axles, do not surpassing in the machine tool guideway travel range, normal follow-rest or the centre frame of adopting supports, with the rigidity of raising slender axles, but in process, because the one-side cutting force of cutter, can force that slender axles shake owing to sending out appears in the reasons such as effect, thermal deformation and deadweight of cutting force, crooked, distortion, the slender axles long for length, that required precision is high also difficulty reach requirement, even if reach requirement, working (machining) efficiency is also lower; If surpass the slender axles of machine tool guideway travel range, then generally be that replacing or the lathe that adds long guideway customized are processed, this certainly will increase cost again.

Summary of the invention

The utility model for shake owing to sending out appears in the reasons such as effect, thermal deformation and deadweight of cutting force in present slender axles and the superfine shaft process, the problem of crooked, distortion, the Cutting tool of the processing superfine major axis that a kind of working (machining) efficiency is high, machining accuracy is high has been proposed.

The Cutting tool of processing superfine major axis described in the utility model is characterized in that: comprise bearing block, cutterhead shell, cutter, tensioning sleeve, fairlead, described cutterhead shell is installed on the bearing of described bearing block; Fixed cutting tool on the tool rest of one side end face of described cutterhead shell, the opposite side end face is connected with the main shaft of lathe by ring flange by bolt; Described tensioning sleeve is fixed on the described bearing block by steady pin, and described tensioning sleeve radially arranges stage clip, and the head of described stage clip connects steel ball, points to the axle center of described tensioning sleeve; Described fairlead is bolted on the end face away from cutter one side of described tensioning sleeve.

Described cutterhead shell is assemblied on the described bearing block by two single-row radial ball bearings.

Described fairlead is coaxial with described tensioning sleeve.

Four groups of stage clips are set in the described tensioning sleeve, and described stage clip is symmetrical in twos, realizes the self-centering of workpiece.

Described cutterhead shell is installed two width of cloth cutters.

The Cutting tool of described processing superfine major axis can be applicable on the lathe, is preferably applied to the C6140 lathe.

During work, after the end to be cut of workpiece inserted from fairlead, self-centering was realized on the surface of the steel ball contact workpiece of stage clip head, the position of then adjusting cutter, and cutter rotatablely moves, and workpiece realizes that by fairlead and tensioning sleeve feed motion realizes turning.

The beneficial effects of the utility model are: 1) simple in structure, easily manufactured, equipment cost is low; 2) because double-pole cuts, the cutting force of just in time cancelling out each other is stablized during cutting, is conducive to guarantee the crudy of workpiece; 3) cutter rotates, and workpiece is done feed motion, similar whirling, and working (machining) efficiency is high.

Description of drawings

Fig. 1 is structural representation of the present utility model

Fig. 2 is right view of the present utility model

Fig. 3 is that (wherein 7 are roller support to the utility model work schematic diagram of being installed to the C6140 lathe; 8 is clamper; 9 is slide carriage; 10 is guide pipe)

The specific embodiment

Further specify the utility model below in conjunction with accompanying drawing

With reference to accompanying drawing:

The Cutting tool of embodiment 1 processing superfine major axis described in the utility model comprises bearing block 1, cutterhead shell 2, cutter 3, tensioning sleeve 4, fairlead 5, and described cutterhead shell 2 is installed on the bearing 11 of described bearing block 1; Fixed cutting tool 3 on the tool rest of one side end face of described cutterhead shell 2, the opposite side end face is connected with the main shaft of lathe by ring flange 21 by bolt; Described tensioning sleeve 4 is fixed on the described bearing block 1 by steady pin, and described tensioning sleeve 4 radially arranges stage clip 41, and the head of described stage clip 41 connects steel ball 411, points to the axle center of described tensioning sleeve 4; Described fairlead 5 is bolted on the end face away from cutter 3 one sides of described tensioning sleeve 4.

Described cutterhead shell 2 is assemblied on the described bearing block 1 by two single-row radial ball bearings.

Described fairlead 5 is coaxial with described tensioning sleeve 4.

Described tensioning sleeve 4 is interior to arrange four groups of stage clips 41, and described stage clip 41 is symmetrical in twos, realizes the self-centering of workpiece.

Described cutterhead shell 2 is installed two width of cloth cutters 3.

During work, after the end to be cut of workpiece 6 inserted from fairlead 5, the surface of the steel ball 411 contact workpiece 6 of stage clip 41 heads, realize self-centering, then adjust the position of cutter 3, cutter 3 rotatablely moves, and workpiece 6 realizes that by fairlead 5 and tensioning sleeve 4 feed motion realizes turning.

Embodiment 2 is installed in the Cutting tool of the processing superfine major axis among the embodiment 1 on the C6140 lathe, Cutting tool links together by ring flange 21 and main shaft, adjust clamper 8, the height of roller support 7 and Cutting tool and linearity, prepare the long guide pipe 10 of a 200mm, the diameter of guide pipe 10 is decided according to the diameter of workpiece 6, guide pipe 10 connects flexibly according to workpiece 6 end portions are different, add man-hour, in guide pipe 10 and workpiece 6 junction feeds, elder generation's trial cut examination is surveyed, and the point of a knife of two cutters 3 is finely tuned to the required diameter dimensional requirement beginning turning, in the time of near clamper 8 drive workpiece 6 move to Cutting tool, unclamp clamper 8, slide carriage 9 is shunk back to certain position, and then clamping work pieces 6 continues processing, when small tool marks appear in workpiece 6, can when finish turning, repair with glaive.

The described content of this specification embodiment only is enumerating the way of realization of utility model design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reaches the equivalent technologies means that design can be expected according to the utility model in those skilled in the art.

Claims

1. the Cutting tool of processing superfine major axis is characterized in that: comprise bearing block, cutterhead shell, cutter, tensioning sleeve, fairlead, described cutterhead shell is installed on the bearing of described bearing block; Fixed cutting tool on the tool rest of one side end face of described cutterhead shell, the opposite side end face is connected with the main shaft of lathe by ring flange by bolt; Described tensioning sleeve is fixed on the described bearing block by steady pin, and described tensioning sleeve radially arranges stage clip, and the head of described stage clip connects steel ball, points to the axle center of described tensioning sleeve; Described fairlead is bolted on the end face away from cutter one side of described tensioning sleeve.

2. the Cutting tool of processing superfine major axis as claimed in claim 1, it is characterized in that: described cutterhead shell is assemblied on the described bearing block by two single-row radial ball bearings.

3. the Cutting tool of processing superfine major axis as claimed in claim 1, it is characterized in that: described fairlead is coaxial with described tensioning sleeve.

4. the Cutting tool of processing superfine major axis as claimed in claim 3 is characterized in that: four groups of stage clips are set in the described tensioning sleeve, and described stage clip is symmetrical in twos, realizes the self-centering of workpiece.

5. the Cutting tool of processing superfine major axis as claimed in claim 2, it is characterized in that: described cutterhead shell is installed two width of cloth cutters.