CN2399135Y

CN2399135Y - Vernier structure of cutting blade

Info

Publication number: CN2399135Y
Application number: CN 98215454
Authority: CN
Inventors: 张新添
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-09
Filing date: 1998-06-09
Publication date: 2000-10-04
Anticipated expiration: 2008-06-09

Abstract

The utility model discloses a trimming structure for cutting cutters. A head sinking hole and a screw hole are mainly arranged on the side of a cutter containing seat arranged on the end of a cutter shaft rod of a cutting cutter by boring, and the head sinking hole and the screw hole are used for containing a trimming screw. The top end of the trimming screw is provided with indicating scales, and corresponding scales are distributed on the periphery of the head sinking hole. The sloping side of the cutting clearance angle of a cutter blade arranged on the cutter containing seat matches with the pitch of the trimming screw to enable the trimming screw to move up and down to change the contacting position of the trimming screw and the slope of the cutting cutter to achieve the efficacy of trimming the position of the cutter blade to control hole boring amount.

Description

The cutting tool fine tuning structure

The utility model relates to the improvement of cutting tool of boring a hole of a kind of internal diameter, but refers to that especially a kind of Precision trimming bores a hole aperture and fine setting blade because of the compensation rate of wearing and tearing, makes the operation of boring a hole more be tending towards cutting tool fine tuning structure easily.

The numerical value processing equipment that the machine-tool that the processing of domestic all kinds of machine components at present need have been operated by the technology people of the pure white silk of technology by tradition changes NC or CNC gradually into substitutes, by formula substitute technology personnel, processing dimension precision not only, and in being fit to very much, the production of low amount; Yet the utilization rate of boring a hole in the numerical value processing machine with cutting tool is very high, and the part of desire processing has the operation of need boring a hole of several different inner diameters, needs the cutting tool of boring a hole of relative populations.

The cutting tool that general tradition is used as shown in Figure 1, in the ccontaining blade 11 of the horizontal through hole in cutter shaft bar 10 proximal end appropriate locations, this blade 11 is by screw 12 locking, drives 10 rotations of cutter shaft bar by the main shaft of processing machine, makes blade 11 rotations and produces the effect of boring a hole; When aperture that the desire adjustment is bored a hole, promptly pine oil screw 12 is adjusted the position of blades 11, changes lathe tool point and cutter shaft bar 10 radius centered distance R, can control the aperture of boring a hole; Yet this blade 11 is finely tuned because of no scale is auxiliary when adjusting radius distance R, and the adjustment test that must go through is for several times bored a hole, and can reach required size, and not only man-hour is wasted in size fine setting inconvenience, is eliminated gradually.

In addition, seeing also shown in Figure 2ly, is a kind of progressive Hole boring knife 20, adjust the position of nut seat 22 by screw rod 21, and then control the blade 24 of tool arm 23 ends and the radius R in footpath, center, can reach the change of adjusting the aperture of boring a hole, though it is easy to adjust, following shortcoming is arranged:

1. cost an arm and a leg, this product is all import, and price is more than thousand yuan of RMB approximately wantonly, if need bore a hole in several apertures of tool on a machining object, then need the Hole boring knife of relative populations, so the higher position of the cost of charp tool is well imagined.

2. this Hole boring knife 20 is by the relative motion generation fine setting of screw rod 21 with nut seat 22, screw rod 21 has the Yu of cooperation crack with 22 of nut seats and exists, just changeing again after screw rod 21 must reverse suitable spacing in when fine setting reversing and advancing, eliminated cooperation Yu crack, can make the size of fine setting accurate.

The purpose of this utility model is to provide a kind of cutting tool fine tuning structure, its simple structure, and fine setting is convenient, reorganizes and brings up to full strength the correction of repaying the blade abrasion amount except that adjustable, and can be embodied as fine-tuning blade, must do the effect of inching in the Hole boring knife of fixed dimension.

For reaching above-mentioned purpose, the utility model is mainly established one in the appearance tool rest side of the cutter shaft bar end of cutting tool and is had counter sink, and the screw established for a fine adjustment screw spiral shell, and the top end face of this fine adjustment screw is provided with indicating graduation; Location about in counter sink is laid with for the corresponding scale of finely tuning of fine adjustment screw indicating graduation in addition; This appearance tool rest is established a screw that runs through, and a blade is placed in the tool rest, this blade is established a taper hole that runs through, and the solid blade of the fixed screw spiral shell of arranging in pairs or groups, this fixed screw neck is established an awl neck, the awl neck is placed in the taper hole of blade, and this fixed screw head sinks to the interior locking of the taper hole blade of blade fully.

Wherein, the gradient that clearance angle produced on blade cut limit and fine adjustment screw butt make blade be able to change blade position according to the contact point of hypotenuse and fine adjustment screw, reach the effect that positive and negative direction trace is bored a hole.

This fine adjustment screw can be made as the adjustment bolt, and its butt bolt and pilot pin are made as an amount of off-centre of tool, and eccentric butt bolt replaces blade, reaches the effect of fine setting.

In addition, establish class's bar of several sections, and each class's bar gets ccontaining blade and fine adjustment screw, processed the class hole of different tolerances in the cutter shaft bar.

By above-mentioned explanation, application of the present utility model makes the operation of boring a hole of Hole boring knife to increase or decrement by trace, directly ward off the aperture of providing tolerance, and need not to use amount trimmed control to be difficult for or the high boring tool of price, reduce the production cost of industry and quickened process velocity, promoted the competitiveness of industry.

Below in conjunction with drawings and Examples, the utility model is further described.

Fig. 1 is the floor map of the cutting tool of boring a hole of traditional type one;

Fig. 2 is the floor map of the cutting tool of boring a hole of traditional type two;

Fig. 3 is a three-dimensional system diagram of the present utility model;

Fig. 3 A is the cutaway view of blade;

Fig. 4 is a combination schematic diagram in plane of the present utility model;

Fig. 5 is the mobile triangle relation figure of fine adjustment screw and blade;

Fig. 6 is the adjustment schematic diagram one of blade;

Fig. 6 A is Fig. 6 cutaway view;

Fig. 7 is the adjustment schematic diagram two of blade;

Fig. 7 A is Fig. 7 cutaway view;

Fig. 8 is the adjustment schematic diagram three of blade;

Fig. 8 A is Fig. 8 cutaway view;

Fig. 9 is an enforcement illustration of adjusting bolt;

Figure 10 is the Hole boring knife use illustration one that the utility model is applied to multistage level;

Figure 11 is the Hole boring knife use illustration two that the utility model is applied to multistage level.

At first see also shown in Fig. 3～4, the utility model is mainly established the screw 32 of a tool counter sink 321 in appearance tool rest 31 sides of cutter shaft bar 30 ends of cutting tool, this screw 32 is established for a fine adjustment screw 33 spiral shells, and the top end face periphery of this fine adjustment screw 33 is provided with indicating graduation 331; Location about in counter sink 321 is laid with scale 322 in addition, and this scale 322 is for the indicating graduation 331 corresponding fine settings of fine adjustment screw 33; This appearance tool rest 31 is established a screw that runs through 311, and it is ccontaining for a blade 34 to hold tool rest 31, this blade 34 is established a taper hole that runs through 341, and the solid blade 34 of a fixed screw 35 spiral shells of arranging in pairs or groups, these fixed screw 35 necks are established an awl neck 351, be placed in the taper hole 341 of blade 34, and the screw terminal of this fixed screw 35 is sunk to fully in the taper hole 341 of blade 34.

According to above-mentioned architectural feature, with regard to application note of the present utility model in the back:

As shown in Figure 3A, a clearance angle θ is established on the cutting limit of this blade 34, this clearance angle θ=7 °; In addition, the specification of this fine adjustment screw 33 is M3 * 0.5, its pitch P=0.5mm, therefore this fine adjustment screw 33 revolves distance D (as shown in Figure 5)=P * tan θ → D=0.5 * tan7 °=0.06mm (getting two of decimal points) of (being pitch P of precession) these blade 34 removable adjustment of turning around, and it is 0.12mm that this blade 34 revolves the amount of boring a hole that turns around; If the scale 322 of counter sink 321 is divided into 12 lattice, the amount of boring a hole of every lattice fine setting then is 0.01mm; So 33 1 scales of fine adjustment screw, this cutter can increase the amount of boring a hole that expands or reduce 0.01mm.

See also shown in Fig. 6～8A, this fine adjustment screw 33 is screwed into counter sink 321 lowermost ends among Fig. 6, the 6A, the amplification amount of the boring a hole minimum of this blade 34; Shown in Fig. 7,7A, this fine adjustment screw 33 whenever up revolves and turns around, the amplification amount C of this blade 34 promptly increases 0.12mm, shown in Fig. 8,8A, the extreme higher position of these fine adjustment screw 33 butt blades 34, blade 34 is by the taper hole 341 of the awl neck 351 butt blades 34 of fixed screw 35, make blade 34 produce sidesways thrust and with fine adjustment screw 33 certain butts blade 34 location and unlikely rocking really, and lock by fixed screw 35.

Therefore, it is return-to-zero that this boring tool is established the center that Fig. 7,7A fine adjustment screw 33 be connected to blade 34 thickness, this fine adjustment screw 33 during toward top offset (as the position of Fig. 8,8A) be the reaming fine setting; If down when being shifted, this blade 34 moves toward in and contracts, and promptly produces and reduces the reaming amount, therefore makes this cutter have positive and negative certificate, subtracts the adjustment in aperture, and the aperture that is very suitable for having positive and negative tolerance processes; Except that this, if blade 34 slightly wore and tore when boring a hole, still can adjust compensation by fine adjustment screw 33, make and bore a hole the aperture in order to do in the scope that can meet machining tolerance.

In addition, see also shown in Figure 9, be the embodiment of another extension of the present utility model, this fine adjustment screw 33 changes to be made as adjusts bolt 40, butt bolt 41 and pilot pin 42 positions must be made as the suitable offset of tool one, and (figure does not show must to establish indicating graduation in the end face of butt bolt 41, but it is identical) with indicating graduation 331 principles of adjusting screw 33, tightly need rotation to adjust bolt 40, the eccentric butt bolt 41 of order changes and the contact position and the blade 34 collocation fixed screws 35 of blade 34 make blade 34 be able to left and right fine setting, reaches the operation of boring a hole of increment or decrement.

In addition, seeing also shown in Figure 10ly, is the use-case that makes that the utility model is applied to multitool sheet Hole boring knife; It is shaft-like that this cutter shaft bar 50 is made as several sections class, each class's bar is provided with and holds tool rest 51, ccontaining and for blade 52 by fixed screw 53 lockings, the plane spiral shell of appearance tool rest 51 sides is established inching screw 54 and is finely tuned blade 52, be able to suitably adjust the amount of boring a hole, and the spacing of the blade 52 of each class's bar is all established the boring tool that fixedly forms one multistage grade of hole special use; Once warded off out the workpiece in multistage class hole, as shown in figure 11, accelerate process velocity, this blade 52 is finely tuned the wear extent of the amount of boring a hole or compensation blade 52, can process the class hole of different tolerance demands, makes convenient, the effect rapidly of processing.

Claims

1. cutting tool fine tuning structure is characterized in that: mainly establish one in the appearance tool rest side of the cutter shaft bar end of cutting tool and have counter sink, and the screw established for a fine adjustment screw spiral shell, the item end face of this fine adjustment screw is provided with indicating graduation; Location about in counter sink is laid with the scale of finely tuning for the indicating graduation correspondence of fine adjustment screw in addition; This appearance tool rest is established a screw that runs through, and a blade is placed in the tool rest, this blade is established a taper hole that runs through, and the solid blade of the fixed screw spiral shell of arranging in pairs or groups, this fixed screw neck is established an awl neck, the awl neck is placed in the taper hole of blade, and the screw terminal of this fixed screw sinks to the interior locking of the taper hole blade of blade fully.

2. cutting tool fine tuning structure as claimed in claim 1 is characterized in that: the gradient that clearance angle produced on blade cut limit and fine adjustment screw butt.

3. cutting tool fine tuning structure as claimed in claim 1 is characterized in that: this fine adjustment screw is made as the adjustment bolt, and its butt bolt and pilot pin are made as an amount of off-centre of tool, and eccentric butt bolt is replaced blade.

4. cutting tool fine tuning structure as claimed in claim 1 is established class's bar more than one section and ccontaining blade of each class's bar and fine adjustment screw in the cutter shaft bar.