CN101912980B - Cylindrical turning-burring integrated tool and method thereof - Google Patents

Abstract

The invention relates to a cylindrical turning-burring integrated tool and a method thereof, belonging to the field of machining. The cylindrical turning-burring integrated tool is characterized in that a burring tool bit (8) is matched and installed on the lower part of a cutting tool bit through a dovetail groove (10), and provided with a burring blade (9); and a bolt seat (5) is arranged below a tool holder and connected with the tail of the burring tool bit through a spring (6), and the front end of a precise screw (4) spinning inside the bolt seat (5) is propped at the tail of the burring tool bit. Before turning an excircle, the elongation of the burring blade (9) relative to a cutting blade (1) is adjusted to enable the tool nose of the cutting blade (1) and the tool nose of the burring blade (9) to be on an arc which takes an axis of a workpiece as a center of acircle and takes a turning radius as a radius; meanwhile, the main cutting edge of the cutting blade and the main cutting edge of the burring blade (9) are in coincidence with a bus of a surface to be processed; and after the cutting blade (1) cuts off the workpiece, the burr on the surface to be processed is just scraped by the burring blade (9).

Description

Cylindrical turning-burring integrated tool and method thereof

Invention field

The present invention relates to a kind of cylindrical turning that is used for, have the metal cutting tool and the method thereof of deburring function simultaneously, belong to field of machining.

Background technology

Along with machinery manufacturing industry strides forward to high accuracy, high efficiency and automatic direction, also increasingly high to the requirement of cut precision.Just make and think that when requirement on machining accuracy is not too high the negligible traditional understanding of shadow of burr has received challenge.Machining period statistic analysis result to most of workpieces to be machined shows, removes the 5%-10% that the burr operation accounts for the whole machining periods of workpiece used man-hour.Since 1973, the U.S. is used to remove about 6,000,000,000 dollars of the usefulness of burr every year.

Cutting burr can directly influence the quality of finished surface usually.When some difficult-to-machine materials of high-speed cutting (like nickel base superalloy), find, form jagged smear metal burr and cutting burr easily.These zigzag side cutting burrs and smear metal burr impact sliding the wiping on the cutter front and rear knife face, produce continuous stress impact and temperature fluctuation and impact.Tool surface micro-crack occurs through a large amount of impact cycles, and the microlith fragmentation takes place then, rolls up groove wear in a big way at last, causes tool failure.

This seminar has designed a kind of deburring testing stand, adopts two cutters to align in the test and cuts, and one is used for cutting to cutter, one cutter with the burr that removes surface to be processed.The burr of work surface after the burr of the work surface during with common cutting and the employing deburring testing stand; Measure at three-dimensional microscopically respectively; The result finds to adopt after the deburring testing stand, and the burr size has reduced about 50%, and cutter life also improves greatly simultaneously.This has proved that also cutting burr is the major reason that causes the cutter slot wearing and tearing.Therefore, to the high speed cylindrical turning processing of difficult-to-machine material, online removal burr not only can improve machined surface quality in process, and can reduce the influence of burr to the cutter groove wear.The development and Design deburrer is significant.

The present invention is directed to the cylindrical turning processing of difficult-to-machine material, propose a kind of novel cutting, deburring integrated tool.

Summary of the invention

The object of the present invention is to provide a kind of external cutting deburring integrated tool and method thereof; When being implemented on the lathe size, the function of on-line automatic removal work surface burr is to improve crudy; Reduce tool wear, improve cutter life and economic benefit.

A kind of cylindrical turning-burring integrated tool; Comprise handle of a knife; Be positioned at the cutter tip of handle of a knife front end; Be installed on the cutting tip on the cutter tip, it is characterized in that: below cutter tip, also cooperate a deburring cutter head is installed, deburring blade also is installed on the deburring cutter head through dovetail groove; There is a bolt block above-mentioned handle of a knife below, and this bolt block and burring knife portion end to end are connected through spring, are threaded onto the interior accurate screw front end of bolt block and withstand on burring knife portion end to end; Above-mentioned cutting tip and deburring blade are also satisfied to be concerned with upper/lower positions: the vertical range that both belong to basal plane is L; When the radius of workpiece is R1; The elongation of deburring blade is:

at this moment; The point of a knife of cutting tip and the point of a knife of deburring blade are being the center of circle with the workpiece axle center just, and the turning radius is on the circular arc of radius; The main cutting edge of cutting tip and deburring blade just is positioned on the same plane, and all tangent with the work surface of workpiece.

Above-mentioned cylindrical turning-burring integrated tool is characterized in that: the natural length of above-mentioned spring can equal, and when the cutting tip point of a knife alignd with the deburring blade point of a knife, burr cutter head afterbody was to the anterior distance of bolt block.When through screwing precision bolt when regulating the deburring cutter head and moving forward, the spring generation pulling force that is stretched helps the fixed-site of deburring cutter head.

Above-mentioned cylindrical turning-burring integrated tool is characterized in that: above-mentioned cutter tip and deburring cutter head can have the scale that is used to indicate two cutter head position offsets, are convenient to regulate both relative distances.

The above-mentioned method of utilizing cylindrical turning-burring integrated tool size and deburring; It is characterized in that: the deburring cutter head can utilize accurate screw rod to regulate the position of deburring cutter head with respect to cutter tip in the effect of spring along the dovetail groove guide rail with respect to sliding before and after the cutter tip; Before the size, regulate the elongation AE of the relative cutting tip of burr blade earlier, so that the point of a knife of the point of a knife of cutting tip and deburring blade is being that turning radius in the center of circle is on the circular arc of radius with the workpiece axle center all; The main cutting edge of cutting tip and the main cutting edge of deburring blade overlap with the work surface bus simultaneously; Wherein

wherein L represent cutting tip and deburring blade vertical range at basal plane, R1 representes workpiece radius; Because the main cutting edge of cutting tip and deburring blade just is positioned on the same plane, and all tangent with the work surface of workpiece, after cutting tip cut workpiece, the burr of work surface was just struck off by deburring blade.

The invention has the advantages that, the main cutting edge of deburring blade and cutting tip at grade, when workpiece be cut blade cut one the circle after, the burr of work surface is just struck off by deburring blade, has improved surface quality and cutter life greatly.Dovetail groove guide rail, spring, accurate screw rod and calibration system can be regulated the relative position of deburring cutter head easily and accurately simultaneously, to adapt to the processing conditions of different exradius.

Description of drawings

Fig. 1, Fig. 2 are the graphics of cutting, deburring integrated tool.

Fig. 3 is the X-Y scheme of deburring-cutting integrated tool original state.

X-Y scheme when Fig. 4 is deburring-cutting integrated tool cutting.

Fig. 5 be type deburring cutter head and blade X-Y scheme.

The sketch map of Fig. 6 deburring-adjustment when the incorporate cutter of cutting changes according to workpiece size.

Label title among the figure: 1, cutting tip, 2, cutter tip, 3, handle of a knife, 4, accurate screw rod, 5, bolt block; 6, spring, 7, scale, 8, the deburring cutter head, 9, deburring blade, 10, the dovetail groove guide rail; 11, cutter I, 12, cutter II, 13, workpiece I, 14, workpiece II.

The specific embodiment

As shown in Figures 2 and 3, the present invention is by cutting tip 1, cutter tip 2, handle of a knife 3, deburring cutter head 8, deburring blade 9, dovetail groove guide rail 10, accurate screw rod 4, bolt block 5, spring 6, graduation mark 7 compositions such as grade.

As shown in Figure 6, blade 1 is a cutting tip 1, and blade 2 is a deburring blade 9, and the vertical range that both belong to basal plane is L.When the radius of workpiece was R1, the elongation of deburring blade 9 was:

$\mathrm{AE}=R1-\sqrt{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="HSA00000230507100022.png,HSA00000230507100031.png"\; state="\{\{state\}\}">R</figure-callout>}1}^2-{\mathrm{<figure-callout\; id="2"\; label="L"\; filenames="HSA00000230507100022.png,HSA00000230507100031.png"\; state="\{\{state\}\}">L</figure-callout>}}^2}$

At this moment, the point of a knife of the point of a knife of cutting tip 1 and deburring blade 9 is being the center of circle with the workpiece axle center just, and the turning radius is on the circular arc of radius.The main cutting edge of cutting tip 1 and deburring blade 9 just is positioned on the same plane, and all tangent with the work surface of workpiece.After cutting tip 1 cut workpiece, the burr of work surface was just struck off by deburring blade 9.

As shown in Figure 3, when the radius of workpiece became R2 by R1, deburring blade needed adjustment, and adjustment amount is:

$\mathrm{\&Delta;}=\mathrm{BF}-\mathrm{AE}=(R2-\sqrt{{R2}^2-L^2})-(R1-\sqrt{{R1}^2-L^2})$

When the value of Δ was positive number, expression deburring blade 9 is equivalent to cutting tip 1 needs to be adjusted forward, rotates accurate screw rod 4, and it is travelled forward; When the value of Δ was negative, expression deburring blade 9 is equivalent to cutting tip 1 needs to be adjusted backward, rotates accurate screw rod 4, and it is moved backward.Δ is adjusted value, reflects through graduation mark 7.

Use that this is novel, during the deburring integrated tool, the operative employee only needs monitoring aside to get final product, and does not need extra use cutter to carry out deburring again.And this integrated tool tool changing is easy, when workpiece size changes, also is easy to the deburring blade position is adjusted, and has graduation apparatus to show the position of deburrer, and the degree of accuracy of adjustment is high.This new-type cutter not only can reduce tool wear greatly after effectively removing the burr of work surface, improve cutter life, can also improve the quality of surface of the work, raises labour productivity.

Claims (4)

1. a cylindrical turning-burring integrated tool comprises handle of a knife (3), is positioned at the cutter tip (2) of handle of a knife front end, is installed on the cutting tip (1) on the cutter tip, it is characterized in that:

Also a deburring cutter head (8) is installed in cutter tip (2) below, deburring blade (9) also is installed on the deburring cutter head (8) through dovetail groove guide rail (10) cooperation;

There is a bolt block (5) above-mentioned handle of a knife (3) below, and this bolt block (5) is connected through spring (6) with deburring cutter head (8) afterbody, and accurate screw rod (4) front end that is threaded onto in the bolt block (5) withstands on deburring cutter head (8) afterbody;

Above-mentioned cutting tip (1) and deburring blade (9) are also satisfied to be concerned with upper/lower positions:

The vertical range that both belong to basal plane is L; When the radius of workpiece was R1, the elongation of deburring blade (9) was:

At this moment, the point of a knife of the point of a knife of cutting tip (1) and deburring blade (9) is being the center of circle with the workpiece axle center just, and the turning radius is on the circular arc of radius; The main cutting edge of cutting tip (1) and deburring blade (9) just is positioned on the same plane, and all tangent with the work surface of workpiece.

2. cylindrical turning-burring integrated tool according to claim 1; It is characterized in that: the natural length of above-mentioned spring (6) equals; When cutting tip (1) point of a knife and deburring blade (9) when point of a knife aligns, deburring cutter head (8) afterbody is to the anterior distance of bolt block (5).

3. cylindrical turning-burring integrated tool according to claim 1 is characterized in that: above-mentioned cutter tip (2) has the scale that is used to indicate two cutter head position offsets with deburring cutter head (8).

4. method of utilizing described cylindrical turning-burring integrated tool size of claim 1 and deburring is characterized in that:

Deburring cutter head (8) can utilize the accurate screw rod (4) and the effect of spring (6) to regulate the position of deburring cutter head (8) with respect to cutter tip (2) along dovetail groove guide rail (10) with respect to sliding before and after the cutter tip (2);

Before the size, regulate deburring blade (9) the elongation AE of cutting tip (1) relatively earlier, so that the point of a knife of the point of a knife of cutting tip (1) and deburring blade (9) is being that turning radius in the center of circle is on the circular arc of radius with the workpiece axle center all; The main cutting edge of cutting tip (1) and the main cutting edge of deburring blade (9) overlap with the work surface bus simultaneously; Wherein

wherein L represent cutting tip (1) and deburring blade (9) vertical range at basal plane, R1 representes workpiece radius;

Because the main cutting edge of cutting tip (1) and deburring blade (9) just is positioned on the same plane, and all tangent with the work surface of workpiece, after cutting tip (1) cut workpiece, the burr of work surface was just struck off by deburring blade (9).

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