CN1498709A - Adjustable milling cutter with cramping arrangement for teeth - Google Patents

Abstract

A milling cutter with adjustable fastener of cutter head is made up of carbonized hard alloy or ceramics, and features that its cutter has a screwed central hole which makes the inner surface of hole smooth and have bigger diameter, resulting in higher fastening force.

Description

The adjustable milling cutter of the fastener of cutter tooth

Technical field

The present invention relates to a kind of cutting tool, the adjustable milling cutter of especially a kind of fastener of cutter tooth.

Background technology

Most various cutting tool in the market all has a central bore.This hole is used to install a clamping screw that accordingly cutter is fixed on the knife bar.When cutting tool was used for turning, knife bar was usually by a lathe tool bar construction; When turning cutting tool was used for milling, knife bar for example was end mill body, vertical milling cutter or face cutter.Cutting tool also can be used for bore hole, and at this moment it is bolted on the boring axle.Its maximum common ground is that this cutter is a kind of index tool, and promptly when cutting blade is worn, the tight bolt of releasable lock also rotates half cycle or 1/4th weeks with cutter, wherein with new blade location and aim at Working position.Cutting tool comprises that also the transposition cutting tool has countless different geometries, to realize good cutting, cutting control and low consumption.These cutters are mostly by having coating or uncoated carburizing carbide alloy to make, but the cutter of also making by different ceramic materials.They have basic configurations such as pros, triangle, rhombus, rectangle or hexagonal usually, but other shape is also arranged.Yet they all have any is common, and promptly they all have an open-work in its geometric center point.This open-work can have different hole designs, is common but any is arranged, and promptly its hole wall is fully smooth.As mentioned above, bolt is inserted in this smooth hole and screws in knife bar originally on one's body the screwed hole, and tool bearing is on knife bar and fixed thereon.However but the weak point that still has some alarming needs to be eliminated the effect of this basic configuration is normally gratifying.For example, nut must be imbedded in the cutter hole, so that to the unlikely obstacle that causes of smear metal stream, this names a person for a particular job the characteristic of crisp relatively cutting tool is further reduced.In addition, particularly owing to the reduction of cutter intensity, centre bore can not be opened to such an extent that diameter is excessive, and this certainly will make the diameter of bolt also less relatively.Therefore when careless overtorquing with when too exerting oneself, tend to occur the phenomenon of bolt fracture.

Summary of the invention

Technical problem to be solved by this invention is the adjustable milling cutter of fastener that proposes a kind of cutter tooth, so that realize bigger fastening force, improves the operability when screwing the locking bolt.

The technical solution adopted for the present invention to solve the technical problems is: this cutter is by making such as suitable hard materials such as carburizing carbide alloy or potteries, be used for machining to preferred metal materials, this cutter contains a hole, this hole is used to install one cutter is fixed on clamping screw on the knife bar, it is characterized in that described hole all or at least part has screw thread.

The invention has the beneficial effects as follows: can realize bigger fastening force, improve the operability when screwing the locking bolt.

Description of drawings

Fig. 1 is the perspective plan view of the embodiment of cutting tool of the present invention

Fig. 2 is the cutaway view of another fixing embodiment of cutting tool of the present invention;

Fig. 3 is a three-dimensional exploded view of the present invention.

The specific embodiment

Among the figure, have screw thread in the centre bore of cutting tool, so that its screw thread that can be locked bolt is fixed, the screw thread of cutter is that direct forming constitutes on the Hardmetal materials of making cutter.Because adopting traditional extrusion forming process is impossible process this screw thread, thereby adopts this screw thread of known spray casting processes.This technology is a kind of general production technology that plastics industry is made different parts.Be heated to suitable temperature by thermoplastic or thermosetting polymer slurry that constitute or that contain these polymer and also then be squeezed in the mould, form required geometry.Spray casting is used to process the parts of for example carburizing cemented carbide powder of being made by metal dust of relative complex in powder metallurgy.Carburizing cemented carbide powder and and mixed with polymers.After shaping, polymer is separated, after this adopted the mode identical that the parts sintering is reinforced with the parts of corresponding mould punching press.Utilization realizes screw thread in the mode that the thread tap of centre is shaped, at Cheng Kaihou this screw tap is screwed out, or behind sintering with its burn off.Centre bore is preferably an open-work, but also can be a blind hole.When the situation of blind hole, certainly will to carry out the length of bolt adaptive so that between at the bottom of bolt end and the hole, leave enough gaps.

Cutting tool 1 is by the reverse bolting of a pair of screw thread.This bolt has two threaded portions 11 and 12 and unthreaded portions 11 between these two parts have left hand thread, and when also having left hand thread in the hole of knife bar 2,9 in threaded portion 12 and cutter hole have right-handed thread.By will in the suitable winding device patchhole 14 this reverse bolt being rotated, this winding device is preferably hexagon or is so-called torx shape.When this situation, the hole on the knife bar also can be an open-work, and oppositely the other end of bolt also can have a suitable recess, and this recess is used for selecting to rotate from the top or from the below.Clamping screw 15 pad 16 spin lockings that are locked have screw thread on the periphery of this pad.Knife bar has a blind hole 17, and this blind hole has the screw thread that is used to be rotated with lock washer 16 at least at an upper portion thereof.But before in lock washer screws in hole 17, bolt will insert in the centre bore of lock washer, thereby the rotation of bolt is suppressed after lock washer is fixing by screw thread.Clamping screw has screw thread 18, and this screw thread should be reverse with the screw thread of lock washer.

Claims (3)

1. the adjustable milling cutter of the fastener of a cutter tooth, be used for machining to preferred metal materials, this cutter contains a hole, this hole is used to install one cutter is fixed on clamping screw on the knife bar, it is characterized in that: described hole all or local at least screw thread and the screw thread thereon of having directly be shaped making on the carburizing carbide alloy of cutter.

2. the adjustable milling cutter of the fastener of cutter tooth according to claim 1, it is characterized in that: the hole is positioned at the center and is open-work.

3. the adjustable milling cutter of the fastener of cutter tooth according to claim 1 and 2 is characterized in that: cutting tool is to adopt spray casting technology to make.

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