CN206677316U

CN206677316U - A kind of processing cast iron skewed slot reamer

Info

Publication number: CN206677316U
Application number: CN201720312988.4U
Authority: CN
Inventors: 王永国; 王旭东
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2017-03-28
Filing date: 2017-03-28
Publication date: 2017-11-28
Anticipated expiration: 2027-03-28

Abstract

A kind of processing cast iron skewed slot reamer is the utility model is related to, the rear end of reamer is retained part, and front end is cutting tip.Cutting tip is provided with 4 to 8 cutters tooth, is provided with 4 to 8 chip areas corresponding to knife face thereafter, and chip area is skewed slot, and its inclination angle is 2 ° to 10 °.Its cutter tooth is by the way of two kinds of different point of a knife structure blade cross-distributions, and cutter tooth is distributed on the circumference of end face for unequal blade spacing.Compared with prior art, the utility model cutting force is uniform, and working angles are steady, improves the crudy in hole；Not only blade stress condition had been improved in process but also the ironing process to machined surface be present, has been advantageous to improve the surface quality of machined surface, is suitable for finishing；Each cutter tooth and chip area carry interior cold oil hole, have taken into account the function of cooling and chip removal, have reduced the surface roughness value in processing hole, and have not influenceed processing efficiency.

Description

A kind of processing cast iron skewed slot reamer

Technical field

It the utility model is related to the cutter in a kind of machining, more particularly to a kind of reamer.

Background technology

Reamer has one or more cutter tooth, is a kind of cutting off the rotating knife of hole machined surface thin metal layer Tool.Reamer is used for the hole after drilling (or reaming) processing on ream workpiece, primarily to improving the machining accuracy in hole, reduces The roughness on its surface, is the finishing for hole and semi-finished cutter, the general very little of allowance.

At present, it is more and more faster with the paces of mechanization, the required precision of the device to hole also more and more higher in machining, hinge The application of knife is also just more and more.Most of reamer used at present is straight fluted reamer, because of its manufacture, inspection and sharpening side Just, linearity is good, and its utilization rate is also higher, but its processing conditions is general, in process chip readily flow to machined Surface, scratch machined surface so that the surface accuracy in hole reduces.

Utility model content

The purpose of this utility model is to provide a kind of easily manufactured, reamer for high accurate hole processing.

The technical solution of the utility model is as follows：

A kind of multiple-cutting-edge skewed slot reamer, including handle of a knife and cutting tip, handle of a knife one end integrally connected cutting tip are described The diameter of handle of a knife is less than the diameter of cutting tip, and the cutting tip is provided with 4 to 8 cutting edges, and cutting tip is additionally provided with and cut The corresponding oblique chip area of sword is cut, the angle of inclination of the chip area is 2 ° to 10 °.

The blade point of a knife of the reamer uses two kinds of different point of a knife structures of circular arc type (A types) and broken line type (Type B), two kinds For the cutting edge of point of a knife cross-distribution, wherein cutting edge than sharp, stressing conditions are relatively good, are suitable for finishing and microstoning, And circular arc type point of a knife has certain pressing effect in working angles to machined surface, while meet process conditions, be advantageous to Improve the surface quality of machined surface.

The reamer cutter tooth is distributed on the circumference of end face using unequal blade spacing, and it is hard because machined material is present to avoid cutter Particle runs into the chip being bonded on hole wall and produces periodic vibration, causes the indenture orientation that cutter tooth is cut to repeat to add It is deep.For the ease of manufacturing and measuring, cutter tooth does the equal unequal blade spacing distribution in angle between paired apical tooth.

The reamer carries interior cold oil hole, and each cutter tooth and chip area have 1 interior cold oil hole, and these oilholes are according to knife Distribution of the tooth on end face and Unequal distance are distributed in around cutter tooth and chip area, and are 30 degree with the angle of reamer center line. Cooling and chip removal effect can significantly be lifted using interior cold cooling and lubricating mode, so that the surface roughness value in hole is significantly Reduce, while do not influence processing efficiency.

The beneficial effects of the utility model are：Because chip area is skewed slot, and blade is welded on cutter hub, compared to straight trough For, blade cutting edge inclination has increased to 2 ° to 10 ° from 0 ° so that cutting edge gradually switches in and out workpiece, therefore cutting force is equal Even, working angles are steady, improve the crudy in hole, and this is highly beneficial for finishing.Use two kinds of differences simultaneously The mode of edging structure cutter tooth cross-distribution, advantageously reduce the surface roughness in hole.Cooling and chip removal are taken into account in interior cold oil hole Function, can reduce hole surface roughness and do not influence processing efficiency.Cut because cutter head cutting end side surface is distributed some Cut sword so that after fraising, hole precision is high and interior avoids smoothness height.

Brief description of the drawings

By the detailed description of result accompanying drawing, the advantages of the utility model foregoing description, purpose and feature will become more Clearly.Wherein：

Fig. 1 is main structure diagram of the present utility model；

Fig. 2 is left view structural representation of the present utility model；

Fig. 3 is distribution schematic diagram of the reamer cutter tooth on the circumference of end face；

Fig. 4 is the edging structure schematic diagram of A type reamer cutters tooth；

Fig. 5 is the edging structure schematic diagram of Type B reamer cutter tooth.

Embodiment

The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.

Embodiment

A kind of processing cast iron skewed slot reamer, as shown in Figure 1-2, the diameter of handle of a knife 1 of reamer is less than cutting tip to its structure Diameter, cutting tip are provided with six cutting edges 4 and corresponding six chip areas 3, and the wherein angle of inclination of chip area is 4 °. The blade is by the way of cutting edge and the different edging structure cross-distributions of two kinds of blunt circle sword.Distribution mode is as shown in Figure 3.Blade It is distributed on the circumference of end face using unequal blade spacing, its distribution angle is respectively：55 °, 60 °, 65 °, 55 °, 60 °, 65 °.Reamer Diameter can be 10-50mm, to different cutting occasions, a diameter of 40.038mm of reamer, whole reamer in the present embodiment Total length be 125mm.

The utility model make use of oblique chip area, and compared to straight fluted reamer, tool inclination angle increases to 4 ° from 0 °, cutting edge by Workpiece is gradually switched in and out, therefore cutting force is uniform, working angles are steady, improve the crudy in hole, to finishing very Favorably；The mode of blunt circle sword and the different edging structure blade cross-distributions of two kinds of cutting edge is employed, its edging structure is respectively such as Fig. 4 Shown in Fig. 5, the surface quality of machined surface can be effectively improved in finishing passes；Reamer cutter tooth is on the circumference of end face The distribution mode of unequal blade spacing is employed, it is possible to prevente effectively from because machined material has Hard Inclusion or runs into process The chip that is bonded on hole wall and caused periodic vibration；An interior cold oil hole 2 is provided with each cutter tooth and chip area, from And the function of cooling and chip removal has been taken into account, therefore surface roughness value can be substantially reduced, processing efficiency is not interfered with again.

Claims

1. a kind of processing cast iron skewed slot reamer, the rear end of reamer is retained part, it is characterised in that the front end of the reamer is to cut Part is cut, cutting tip is provided with 4 to 8 cutters tooth, and cutter tooth has two kinds of different edging structures, and knife face is provided with chip area thereafter, The chip area is skewed slot, and reamer carries interior cold oil hole.

2. a kind of processing cast iron skewed slot reamer according to claim 1, it is characterised in that described chip area is oblique Groove, its angle of inclination are 2 ° to 10 °.

3. a kind of processing cast iron skewed slot reamer according to claim 1, it is characterised in that the cutter tooth blade is using folding Line style point of a knife and the mode of the different point of a knife structure cross arrangements of two kinds of circular arc type point of a knife.

4. a kind of processing cast iron skewed slot reamer according to claim 1, it is characterised in that its cutter tooth is on the circumference of end face By the way of unequal blade spacing distribution.

5. a kind of processing cast iron skewed slot reamer according to claim 1, it is characterised in that described interior cold oil hole is every Individual cutting edge and chip area are equipped with one.