CN1104138A

CN1104138A - Spanend, especially cutting tool

Info

Publication number: CN1104138A
Application number: CN 93112715
Authority: CN
Inventors: 雷那尔·V·翰斯; 威里·杰斯特
Original assignee: Krupp Widia GmbH
Current assignee: Widia GmbH
Priority date: 1993-12-20
Filing date: 1993-12-20
Publication date: 1995-06-28

Abstract

The present invention relates to a cutting tool, in particular it is a shaving-clipping plug-in tool, and in particular, in order to prevent the plug-in chip of the clipping tool from releasing out from its position the partial face holded on the clamping arm is inclined relatively to the supporting face (128) or the plane defined by supporting line of the plug-in chip of cutting tool to form a negative angle beta.

Description

Spanend, especially cutting tool

The present invention relates to a kind of swarf cutter, especially be shave grafting cutter, have holder and a bite inserted sheet of having a flute profile breach, but this inserted sheet removably is clamped in the holder under prestressing force by means of an open jig arm of elasticity that constitutes on a side of breach, wherein bite inserted sheet and flute profile breach all are configured the V-arrangement configuration at them in mutually in the face of the insertion of effect and the cross section of contact-making surface, and the bite inserted sheet has a plurality of be close to basic at it and is the part face on plane on direction of insertion on the insertion of jig arm and contact-making surface, wherein two part faces constitute turning back a little of an obtuse angle and " roof " angle each other in this wise, be jig arm when clamp position, be clamped on the bite inserted sheet part between " roof " angle and the cutting angle.

In DE-OS2206654, described a kind of holder of shave cutter, but it has the jig arm of an elastic bending, the free end of its bite inserted sheet under its bending stress effect by cramping on holder.

In order to regulate chucking power better and prevent that the bite inserted sheet from extruding from the flute profile breach, a kind of shave cutter has been proposed in EP0095062 B2, bite inserted sheet and top clamp port are provided with and push the gauge striking face therein, its mode is that cutting force will cause the proportional raising of chucking power, wherein clip slot has the breach that prolongs behind the striking face, this breach departs from clip slot and longitudinally extends in the clamp port of top, and consequently having constituted one plays the obvious narrow bridge mouth that the is pressed into pin joint effect, that be used for clip slot expansion degree.The clamping face of top clamp port raises a little backward with respect to the clamping face of bite inserted sheet, makes the bite inserted sheet sandwich leverage in clamp port in fact so that always formed one.

A kind of improvement of above-mentioned form of implementation has been described in DE3906822 A1, wherein clip slot has an oval groove district in its rear area, can insert the support groove spoon of a non-circular cross-section therein, and rotatable, can make jig arm strut and make shave or bite inserted sheet to unload thus.

On cutting tool, has a bite inserted sheet that has the horn shape upper surface according to EP0152729 B1, this upper surface has a plurality of parts of tilting mutually with respect to seating surface, these parts have determined when inserting the bite inserted sheet as sliding surface, and the turning point or the point of interface that initially utilize the horn shape upper surface to incline towards each other between obtuse-angulate two parts that insert final stage therein define.The clamping contact-making surface is in the turning point or the end position between the horn shape upper surface in the middle of point of interface and the cutting angle of jig arm and bite inserted sheet.The bite inserted sheet is configured the V-arrangement configuration on the respective face of its interactional upper surface and holder.These two the part faces that constitute turnover or point of interface and " roof " angle are provided with in this wise, it is the seating surface that clamping face is roughly parallel to the bite inserted sheet, the face that has a common boundary with clamping face then is inclined to a positive-angle with respect to seating surface, and it is between 2 ° and 5 °.

EP0242343 has proposed to be used for a configuration that has the bump nose accordingly of jig arm front end face.Clamping area adjacent with the bump nose on the bite inserted sheet is parallel with seating surface.Behind described clamping area, connected a plane that forms positive angle.Here its cross section of corresponding contact face of bite inserted sheet and groove shape breach is V-arrangement.

Task of the present invention is: the described swarf cutter of Introductory part is improved in this wise, promptly especially when cutter returns out, must prevent reliably that the bite inserted sheet from extracting out from holder from a cutting slot.

This task will solve in this wise according to the swarf cutter of type under the claim 1: the part face on the jig arm of being clamped in is with respect to seating surface or by the plane that the Support Line of bite inserted sheet the is determined negative angle that tilts.With compare by the known cutting grafting of prior art cutter so far, this inclination combines with jig arm and has caused: even the bite inserted sheet can not pull out from clip position or by mistake be moved yet under the situation of pulling force.Preferably between 2 ° and 30 °, decide on this angle at this inclination angle, has determined the force component that promptly works in pushing direction backward by clamping force decision, and wherein the major part of clamping force is pressed on the bite inserted sheet on the seating surface in the holder.Favourable mode is that this form of implementation is combined by the known configuration characteristic of prior art with all, wherein is provided with the striking face at rear in the holder breach, shifts to the rear so that prevent the bite inserted sheet when cutwork.Being displaced sideways of bite inserted sheet is to utilize the V-arrangement face in the cross section of bite inserted sheet and holder effectively to avoid.

Further configuration of the present invention is described in the dependent claims.

Jig arm is preferably between " roof " angle and the cutting angle point or linear contact on the bite inserted sheet (wherein contact wire with push direction vertical).Even a kind of firm locking of the contact of this point or line-in the time the Surface Machining inaccuracy of bite inserted sheet and holder breach may occurring-guaranteed.

According to another configuration, jig arm has the contact plane in the zone forwardly, and its appropriate section face with respect to the bite inserted sheet on opposite when clamp position a little upcountry raises.This rising angle is preferably 1 ° to 5 ° between 1 ° and 10 °.

The received block of bite inserted sheet and corresponding holder seating surface can constitute the breach base of spill, stability is further improved.

Compare with cutting blade inserted sheet last monolateral point in surface or linear overlaying, foregoing form of implementation combines with breach base configuration then provides the multiple spot in received block and the zone, bite inserted sheet base to contact.If reach further stable, another pressure holding point or another a clamping line or the face on another part face farthest of cutting angle that is attached to can be had on the jig arm, also promptly, the bite inserted sheet will the front region behind the cutting angle in and in the rear area farthest of cutting angle, be held.

At this moment the form of implementation of bite inserted sheet preferably have three from push direction see be close to each other, its cross section is the part face of V-arrangement configuration, wherein farthest last part face is parallel to the seating surface of bite inserted sheet from the cutting angle.If it is jaggy that this seating surface constitutes, then in the corresponding way this seating surface is interpreted as the plane of determining by Support Line.Middle part face is preferably with respect to tilt one from 5 ° to 70 ° positive-angle of this seating surface, this just makes and play such effect when being inserted into the bite inserted sheet in the flute profile breach: the face of this second inclination is rendered as a kind of slope with respect to the front side of jig arm, therefore jig arm will be strutted, so that after by " roof " angle, inserted sheet is incorporated in the receiving position backward.For a rearmost contact-making surface that will add clamping at a stable condition lower clip arm, it or be parallel to the bottom surface of bite inserted sheet or the base of holder, or with respect to the seating surface of the bite inserted sheet positive-angle that tilts, this angle is 1 ° to 10 °, is preferably 1 ° to 5 °.When the form of implementation that tilts, so first part constituted " roof " in the face of the transition of second part face, and second part constituted " hollow ditch " in the face of the transition of the 3rd part face.Yet second level third part face also can constitute single.These part faces generally are plane configurations, but also can constitute slight recessed or convex.If jig arm is not only forwardly in the zone but also all the bite inserted sheet is pressed in the bite plug base in the zone in the wings, be preferably in then that jig arm is provided with a breach between the place ahead part face and the rear contact-making surface, this breach is circular in a preferred implementing form.Utilize this breach just to make the second portion face of bite inserted sheet reach " roof " angle by its " leap " past.

If do the height of bite inserted sheet bigger, then when the clamp position of bite inserted sheet, just obtained a prestressing force than the flute profile breach of not carrying.

According to another configuration, the bite inserted sheet with zone that the cutting angle is adjoined mutually in have a striking face, this face is by having determined the terminal location of bite inserted sheet in holder to the contact of the jig arm front end face of holder.

As a preferred configuration, jig arm itself is provided with a coolant channel.

In order to make the bite inserted sheet be easy to unload so that change or after process finishes, be easy to dismounting from holder, the flute profile breach has a breach that constitutes certain profile therein with in the regional adjacent areas that receives the bite inserted sheet, can insert one in this breach has it and grows up in the slotting spoon of its wide cross section, and when this is inserted spoon and rotates, groove shape breach in bite inserted sheet receiving area with broadened.The breach and the slotting spoon that preferably have certain profile are configured ellipse or oval cross section, and this becomes easy with regard to making the rotation of inserting spoon.

According to another configuration of the present invention, the prestressing force of double wall can pass through a clamping screw adjustment, and this provides a form of implementation that is specially adapted to vertical turning.

The other form of implementation of the present invention is described in the accompanying drawings.Accompanying drawing is:

Fig. 1 and 2: each lateral plan of shave cutter;

Fig. 3: along a profile of Fig. 2 Vertical Centre Line III-III;

Fig. 4: according to the detailed enlarged drawing of the inserted sheet of Fig. 1 or 2;

Fig. 5: the lateral plan of a bite inserted sheet;

Fig. 6: according to the front view of the bite inserted sheet of Fig. 5;

Fig. 7 a: lateral plan of inserting spoon;

Fig. 7 α: corresponding to the sectional view of VII among Fig. 7-VII line;

The bite inserted sheet of Fig. 8: Fig. 5 is inserted in the holder;

Fig. 9: another bite inserted sheet;

Figure 10: the holder of above-mentioned inserted sheet;

Figure 11: inserted sheet holder with clamping screw; And

Figure 12: the holder that in jig arm, is provided with coolant channel.

Holder 10 in each accompanying drawing has a flute profile breach 11(especially referring to Figure 10), its first 111 adapts with the exterior contour of bite inserted sheet 12.Be provided with a long ellipticity to elliptoid cavity 112 in the continuation of breach 11 prolongs, the slotting spoon 13(that can insert an insertion end 131 with it therein is referring to Fig. 7), this is inserted spoon and rotates 90 ° of angles and can make open wide move of jig arm 101 with groove 11.The groove prolongation 113 that links to each other in oval breach 112 backs has been determined the length of jig arm 101 in fact and has also been determined by the obtainable stress value of jig arm by it.Bite inserted sheet 12 has a cutting angle 121 and is cutting face commonly known in the art configuration in principle at its front end, as in present example, representing ground with the bite inserted sheet, it carries out the transition to a nose shape part 122 of this bite inserted sheet, and 123 whiles of trailing flank of this part are as the striking face of jig arm 101 front end faces 102.Represented as corresponding cross section in Fig. 3, this bite inserted sheet reaches thereon and all is configured V-arrangement in the lower area, and as in present example, this cutting cutter hub 12 has the upper and lower side of spill, and this holder 10 is illustrated as the convex of respective configuration.The novel part of this bite inserted sheet essence is the upper side of the bite inserted sheet that is connected with nose 122 rear sides.This bite inserted sheet has three the part faces 124,125 and 126 that adjoin here, and two part faces 124 that wherein begin and 125 constitute an obtuse angle alpha each other, and forms one thus and turn back a little or " roof " angle point 127.Angle δ between

part face

125 and 126 is equal to or greater than 180 °, and promptly these two part faces constitute a ditch or a coherent plane each other.Part face 126 can be parallel to the seating surface 128 of this bite inserted sheet, or this seating surface is extended in a positive acute angle direction.The part face 124 that directly has a common boundary with nose 122 constitutes a negative angle β with respect to this seating surface or by the determined plane of the Support Line of bite inserted sheet.This angle of inclination beta is about 5 ° in present example between 2 ° and 10 °.Part face 125 is with respect to positive-angle γ of seating surface 128 inclinations, and this angle can be about 12 ° in the example at present between 5 ° to 70 °.Jig arm has the place ahead contact-making surface 103 at least, and this face then is being held with an angle ε (referring to Fig. 4) when not contacting with part face 124 on whole.A kind of some contact or the wire that have formed in the contact point zone of representing with A by this angle ε contact.Utilize angle of inclination beta to make bite inserted sheet 12 also obtain a clamping force component of effect backward, when from the groove that processes, extracting this cutting tool out, maybe when duplicating turning or moulding turning, utilize this clamping force that acts on backward just can avoid the bite inserted sheet from holder, to be transferred to.The part face 125 that joins with first face 124 insert the bite inserted sheet in breach 11 time (referring to Fig. 8) help the opening of jig arm 101, when reaching turning point 127 till, it opens and has reached at utmost at that point.The continuation insertion of this bite inserted sheet 12 in flute profile breach 11 is to utilize the inclination of part face 124 to combine with the compression of jig arm 101 to facilitate.This bite inserted sheet only can be inserted into such degree of depth in groove shape breach 11, promptly till the front end face 102 of jig arm collides the corresponding striking face 123 of inserted sheet nose 122.Meanwhile or as an alternative, also a striking face 104 as cavity 111 rear gauges can be set at jig arm 101 places.

Yet jig arm 101 also can have second a folder contact (referring to Fig. 4) in area B, at this moment jig arm has and part face 126 corresponding another faces 105, its is relative part face 126 angle λ that tilts a little similarly, this angle, angle value is 1 ° to 10 °, paying the utmost attention to is 1 ° to 5 °, consequently makes in the rear section of bite inserted sheet, here contacts for also having obtained a point or wire in the area B.In order to cross over part face 125, jig arm 101 has the vacancy 106 of a semi-circular profile 107 between in this section.This jig arm 101 bends to clamp position.Optimum configuration by vacancy 106 sizes can reach: adjust chucking power in clamping zone A and B, so that can obtain the skew of minimum at the place, cutting angle when corresponding processing tasks.Also can have the vacancy 108 that circular contour is a boundary another being set with second clamping face, 105 junctions.This bite inserted sheet 12, or utilize an impact tool such as rubber mallet, or inserting spoon 13 and making groove form corresponding Zhang Kuanhou at its 90 ° of angles of rotation, be inserted in the flute profile breach 11.Correspondingly, can after 11 of grooves are wide, the bite inserted sheet be taken off by inserting spoon 13.

This bite inserted sheet is seen from a side view at its lower side can constitute linearity, for example at Fig. 1, shown in 2,5 and 8.Also can be alternatively to this, have the bottom wheel profile 129 of a breach at the downside of the bite inserted sheet that has the V-arrangement seamed edge, correspondingly in the receiving area, the place ahead of groove 11, be provided with breach 114 on the holder 10.

Similarly, as shown in fig. 1, but seating surface 128 is with respect to hole or the setting in parallel with each other at an angle of holder base 109 shapes.

According in the form of implementation shown in Figure 11, it is specially adapted to vertical turning, and wherein jig arm 101 utilizes screw rod 14 to clamp.

When as for example in turning operation, when needing a kind of cooling lubricant, can in jig arm 101, set up a cooling agent input channel 15.

Claims

1, the swarf cutter, especially shave grafting cutter, have the holder (10) and the bite inserted sheet (12) that have a flute profile breach (11), this inserted sheet by means of one at breach (11) but a side on constitute the open jig arm of elasticity (101) and under prestressing force, removably be clamped in the holder, wherein bite inserted sheet (12) and flute profile breach (11) all constitute the V-arrangement configuration at them in mutually in the face of the insertion of effect and the cross section of contact-making surface, and the bite inserted sheet has a plurality of be close to basic at it and is the part face on plane on direction of insertion on the insertion of jig arm (101) and contact-making surface, wherein two part faces constitute the point (127) of turning back at an obtuse angle alpha and " roof " angle each other in this wise: promptly jig arm (101) is when clamp position, be clamped on bite inserted sheet (12) part between " roof " angle (127) and cutting angle (121), it is characterized in that: the part face (124) on the jig arm (101) of being clamped in is with respect to seating surface or by the plane that the Support Line of bite inserted sheet (12) the is determined negative angle β that tilts.

2, according to the swarf cutter of claim 1, it is characterized in that: this negative angle β is between 2 ° and 30 °.

3, according to the swarf cutter of claim 1 or 2, it is characterized in that: jig arm (101) some contact or wire are clipped on the bite inserted sheet (12) between " roof " angle (127) and cutting angle (121) contiguously.

4, according to the swarf cutter of claim 1 to 3, it is characterized in that: jig arm (101) has plane contact-making surface (103) in the zone (A) forwardly, and it a little upcountry raises with respect to the corresponding opposed part face (124) on the bite inserted sheet (12).

5, according to the swarf cutter of claim 2, it is characterized in that: rising angle ε preferably is thought of as 1 ° to 5 ° between 1 ° and 10 °.

6, according to one swarf cutter in the claim 1 to 5, it is characterized in that: the corresponding surface (114) of seating surface (128) and/or holder (10) is configured the breach bottom of indent.

7, according to one cutting tool in the claim 1 to 6, it is characterized in that: jig arm (101) has another additional bite (B) on cutting angle (121) part face farthest, or another clamping line or clamping face.

8, according to one swarf cutter in the claim 1 to 7, it is characterized in that: bite inserted sheet (3) is from push direction, has the transversal part face (124 of formation V-arrangement side by side, 125,126), wherein last part face (126) (121) farthest and be parallel to the seating surface (128) of bite inserted sheet apart from the cutting angle.

9, swarf cutter according to Claim 8 is characterized in that: middle part face (125) is with respect to positive angle γ of seating surface (128) inclination, and this angle is 5 ° to 70 °.

10, according to the swarf cutter of claim 5 to 7, it is characterized in that: contact-making surface (105) after jig arm (101) has, it is 0 ° with respect to the contact-making surface (126) of bite inserted sheet (12) or tilts with a positive-angle (λ), this angle (λ) is 1 ° to 10 °, is preferably 1 ° to 5 °.

11, one swarf cutter in 10 according to Claim 8 is characterized by: jig arm (101) has a breach (106) between part face (103) and the rear part face (105) forwardly, and it is preferably circular.

12, according to one swarf cutter in the claim 1 to 11, it is characterized in that: bite inserted sheet (12) it highly be provided with greater than the width of flute profile breach (111) of carrying not, so that make when clamp position bite inserted sheet (12) clamped under prestressing force.

13, according to one swarf cutter in the claim 1 to 12, it is characterized in that: bite inserted sheet (12) with zone that cutting angle (121) are adjoined mutually in have a striking face (123), this face is by having determined the terminal location of bite inserted sheet (12) in holder (10) to the contact of the front end face (102) of holder jig arm (101).

14, according to one swarf cutter in the claim 1 to 13, it is characterized in that: in jig arm, have a coolant channel (15).

15, according to one swarf cutter in the claim 1 to 14, it is characterized in that: flute profile breach (11) has a breach (112) that constitutes certain profile therein with in zone (111) adjacent areas that receives bite inserted sheet (12), can insert one in this breach has it and grows up in the slotting spoon (13) of its wide cross section, and when this is inserted spoon and rotates, groove shape breach (11) in bite inserted sheet receiving area (111) with broadened.

16, according to the swarf cutter of claim 15, it is characterized in that: breach (112) and slotting spoon (13) with certain profile are configured long ellipse or oval cross section.

17, according to the swarf cutter of claim 1 to 16, it is characterized in that: the prestressing force of jig arm (101) can be adjusted by a clamping screw (14).