CN1256182A

CN1256182A - Combined forming cutter

Info

Publication number: CN1256182A
Application number: CN 99119691
Authority: CN
Inventors: 田根旺
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-23
Filing date: 1999-09-23
Publication date: 2000-06-14
Anticipated expiration: 2019-09-23
Also published as: CN1094406C

Abstract

The combined forming cutter specially for metal cutting lathe includes cutter comprising cutting section and reinforced tail section and elastic fixture. The cutter is formed wholly, needs no grinding when used,and has long service life. The cutter may be manufactured in different specification for lathe operator to select.

Description

Combined forming cutter

The present invention relates to the manufacturing of metal turning lathe forming cutter.

The basic knife-edge of the cutting off tool that existing metal turning lathe is the most frequently used is a thin slice shape and growing, and big back, front is little, the big bottom in top little (shown in Figure 2), and require H all the time ₂Greater than H ₃Its basic knife-edge just constitutes a kind of knife-edge of easy breaking, but always be that turner people wears into one section knife-edge for a long time with bloom by hand on emery wheel, its the manual low institute of low and precision in privation, workload breaking rate that causes of whetting a knife is higher, work causes the many and comprehensive cost height of trouble to lathe, is limiting lathe production greatly.

Cutting knife fair wear and tear in use will soon change the V angle and the S section occurs, and progressively enlarges, because α angle and α ₂The angle exists, and the S section enlarges more just makes H ₂Dwindle more, in order to ensure H ₂＞H ₃, people often realize dwindling H to enlarge the α angle ₃Purpose because the expansion at α angle causes H ₄Narrow down to the limit and the nonreactive brute force constitutes the very easily main fatal root of breaking again, and the expansion at α angle also having limited the length of research setting cutting knife, also is always to study the part that is difficult to resolve that the setting cutting knife do not succeed.

When whetting a knife people often the b section establish too little, more little its arc that the b section is established is just more little, its arc is more for a short time to make chip removal be subjected to resistance big more, in case smear metal thickens the chip removal resistance is increased and breaking in working angles.The more little V of b section arc angle is also just more little, and the V angle anti-brute force of more little its point of a knife is also more little, causes the point of a knife rate of being damaged to increase to make the cutter life-span little, because of V angle too little in fair wear and tear makes S section enlarge just fast not only but also makes the cutter life-span little.

U.S. Pat 2391133 discloses the alternately cutter of welding of a kind of polylith cutter hub up and down, after first cutter in top is worn, its notch width is just less than the width of following second cutter, and following second cutter hub just can not enter in the grooving, especially first cutter is frayed dwindle one section after its cutting scope of application very limited, though it does not need the sharpening type, but be subjected to the restriction of the big and cutting groove depth of diameter of work in use, larger-diameter workpiece and cutting-in groove can not be cut, and fragile material can only be cut.

The object of the present invention is to provide a kind of novel combined forming cutter, characteristics of the present invention are full cutter hub setting, and the shape of whetting a knife no longer by hand forever in use is reasonable in design, easy to use, strong durable, be difficult for breaking, natural life-span is long, and comprehensive cost is low, can replace original cutting knife.According to different purposes, the lathe workman can select optimal cutting knife specification at any time, for lathe production provides very big convenience.

The present invention includes and strengthen cutter tail typing cutting knife cutter hub and jig, cutter hub is to be made of knife-edge section and reinforcement cutter rear.

The present invention is described in detail as follows with reference to accompanying drawing:

Fig. 1 strengthens cutter tail combination typing cutting knife cutter overall schematic; Fig. 2 is known cutting knife cutter schematic diagram; Fig. 3 strengthens cutter tail typing cutting knife schematic diagram; Fig. 4 strengthens flat mouthful of cutting knife schematic diagram of cutter tail typing; Fig. 5 strengthens the cutter tail powerful cutting knife schematic diagram of finalizing the design; Fig. 6 strengthens the powerful flat mouthful of cutting knife schematic diagram of cutter tail typing.

Fig. 7 strengthens cutter tail typing cutting knife jig schematic diagram.

As shown in the figure, be respectively to strengthen facing and side view of cutter tail typing Combined knife cutter among Fig. 1, A is for strengthening cutter tail cutting knife cutter hub, and B is a jig, and cutter hub A inserts jig B; Cutter hub shown in Figure 3 is to be made of two parts knife-edge section L and cutter rear t, and cutter rear t does not establish α in the front ₂Angle, characteristics are that existing cutting knife essential structure α and α are extended to new knife-edge total length L for 2 jiaos, in order to make H ₂＞H ₃Realize dwindling H with suitable expansion b section ₃, therefore will be forever no longer with manual mill α and α ₂The angle knife-edge.The design of strengthening cutter tail setting cutting knife successfully is to add one section reinforcement cutter tail t more in addition in the back of knife-edge total length L, strengthens cutter tail front and does not establish α ₂The angle more helps swaging clamp intensity, promptly strengthens the cutter tail and will stay at last in the cutter jig, and the increase of strengthening the cutter tail makes knife-edge total length L become full effective length, and it is above that actual effective length can be doubled.Usually knife-edge section L and cutter rear t length ratio can be designed to 3-1: 1-2, and the cross section (3-3) of knife-edge section (L) is by α ₂The angle constitutes; The width of cutter rear td is 1/2 of knife-edge section (L) top H.Cutting knife b section U groove and α ₃The angle always changes in the middle of using, and can suitably be adjusted at any time by the lathe workman.

Fig. 4 strengthens the flat mouthful cutting knife of cutter tail setting, and it does not establish b section U groove, is flat mouthful cutting knife, uses when its purposes is the cutting different materials, and other structure is identical with Fig. 3.

Fig. 5 strengthens the cutter tail powerful cutting knife that formalizes, it is characterized in that (5-4) cross section be by the HK of falling the trapezoidal faces connect with rectangle face hE constitute, make the cross section increase have more anti-brute force and be difficult for breaking, other structure is identical with Fig. 3.

Fig. 6 strengthens the cutter tail powerful flat blade that formalizes, and it is characterized in that it does not establish b section U groove and be a flat mouthful cutting knife, and other structures are identical with Fig. 5.

Shown in Figure 7,7-2 establishes a through hole, B at cutting knife jig eccentric part ₂-B ₃Be the swaging clamp mouth, at swaging clamp mouth B ₂-B ₃In the middle of again and open-minded between the through hole, make swaging clamp mouth B ₂-B ₃Between constitute a telescopic elasticity jig, during use the cutting knife cutter hub is inserted in the bayonet socket, 7-1 α angle is consistent with cutter hub α angle, makes cutter hub one side α ₂The bottom at angle is close to the location square N in bayonet socket, and the lathe cutter head screw is to the B on the jig afterwards ₁The place presses when bayonet socket is shunk, and jig and cutter hub are fixed on the lathe synchronously, and this jig is easy to use, and more stable and stronger is practical.

The present invention can be designed to plurality of specifications according to lathe and every chassis bed multiple use thereof of large, medium and small multiple different size, for lathe production provides very big convenience.

The present invention is reasonable in design, and is easy to use, strong durable, is difficult for breaking, and natural life-span is long, and comprehensive cost is low, can overcome the deficiencies in the prior art, removes lathe workman big in privation with manual sharpening shape again.The present invention can cut darker groove and cut darker groove on big arbitrarily diameter work piece, and is of many uses.

Claims

1. the combined forming cutter of a metal turning lathe special use, it is characterized in that it comprises reinforcement cutter tail setting cutting knife cutter hub (A) and elasticity jig (B), cutter hub (A) is by knife-edge section (L) and strengthens cutter rear (t) formation, cutter hub (A) insertion jig (B), and jig (B) is established swaging clamp mouth (B ₂-B ₃), jig (B) eccentric part is established a through hole, and opens and make swaging clamp mouth (B in the swaging clamp place ₂-B ₃) formation telescopic elastic jig, swaging clamp mouth (B ₂-B ₃) the interior position square (N) of setting; The α angle of the α angle of said jig (7-1) and cutter hub (3-2) is complementary; Said knife-edge section (L) has b section U groove or does not establish b section U groove; α is not established in said cutter rear (t) front ₂The angle.

2. according to the said combined forming cutter of claim 1, the cross section (5-4) that it is characterized in that said knife-edge section (L) is to connect institute with rectangle face hE by the HK of falling the trapezoidal faces to constitute and strengthen the cutter tail powerful cutting knife that formalizes.

3. according to the said combined forming cutter of claim 1, it is characterized in that said knife-edge section (L) and cutter rear (t) length ratio can be designed to 3-1: 1-2.

4. according to the said combined forming cutter of claim 1, the width that it is characterized in that said cutter rear (t) d is 1/2 of knife-edge section (L) top H.

5. according to the said combined forming cutter of claim 1, it is characterized in that the cross section (3-3) of said knife-edge section (L) is by α ₂The angle constitutes.