An indexable thread machining insert

Abstract

The invention discloses an indexable thread processing blade, which comprises a blade body. The blade body is provided with a center hole of the blade and a cutting edge. Enclosed by the lower surface, the two edge angle sides intersect with the rake face to form two side cutting edges, the angle between the two side cutting edges is the cutting edge angle, and the rake face is connected to the upper surface of the insert body through a curved surface The chip breaking bosses are arranged symmetrically along the bisector of the cutting edge angle on the rake face. The chip breaking bosses are surrounded by the rake face, the connecting curved surface, the top surface of the boss, the arc surface and two side curved surfaces. As a result, the chip breaking boss is respectively connected with the rake face and the connecting curved surface through a circular arc transition, and the top surface of the boss and the side curved surface are also connected through a circular arc transition. The invention has stable cutting ability and can meet the processing requirements of complex working conditions; can effectively control the curling and flow direction of chips, reduce the contact area between chips and the rake face, and effectively improve tool life and processing efficiency.

Description

technical field

[0001] The invention relates to the technical field of metal cutting tools, in particular to an indexable thread insert for thread machining. Background technique

[0002] Thread turning is an indispensable part of machining, and its main features are large feed per revolution and small depth of cut per knife, which requires inserts with excellent wear resistance and chipping resistance.

[0003] In thread machining, there are mainly three feeding methods, namely radial feeding, lateral feeding and alternating feeding. Using different feeding methods for processing will produce different effects on chip shape, thread quality and tool wear. Influence, in practical applications, more use of radial feed. The thread is processed after several passes, and the depth of cut of each knife is gradually reduced. In the half stage, especially when the thread shape is to be processed, the depth of cut becomes extremely small, the generated chips become thinner and wide...

Examples

Embodiment

[0029] like Figure 1 to Figure 5 As shown, an indexable threading insert of the present invention, the insert body 1 is surrounded by an upper surface 11, a lower surface 12 and a side surface 13, and is in the shape of an approximately equilateral triangle. There is a center hole 2 of the insert that runs through the insert body 1 along the thickness direction of the insert. The insert body 1 is also provided with a cutting edge portion 3. There are three cutting edge portions 3. The cutting edge portion 3 consists of a rake face 31, a corner round The arc surface 32, the two edge surfaces 33 and the lower surface 12 are enclosed, and the two edge surfaces 33 intersect with the rake surface 31 to form two side cutting edges 34, which are connected to the rear ends of the two side cutting edges by trimming. Edge 3A, the angle between the two side cutting edges 34 is the cutting edge angle 35, the rake face 31 gradually sinks from the edge arc surface 32 to the direction of th...

technical field

[0001] The invention relates to the technical field of metal cutting tools, in particular to an indexable thread insert for thread machining. Background technique

[0002] Thread turning is an indispensable part of machining, and its main features are large feed per revolution and small depth of cut per knife, which requires inserts with excellent wear resistance and chipping resistance.

[0003] In thread machining, there are mainly three feeding methods, namely radial feeding, lateral feeding and alternating feeding. Using different feeding methods for processing will produce different effects on chip shape, thread quality and tool wear. Influence, in practical applications, more use of radial feed. The thread is processed after several passes, and the depth of cut of each knife is gradually reduced. In the half stage, especially when the thread shape is to be processed, the depth of cut becomes extremely small, the generated chips become thinner and wide...

Examples

Embodiment

[0029] like Figure 1 to Figure 5 As shown, an indexable threading insert of the present invention, the insert body 1 is surrounded by an upper surface 11, a lower surface 12 and a side surface 13, and is in the shape of an approximately equilateral triangle. There is a center hole 2 of the insert that runs through the insert body 1 along the thickness direction of the insert. The insert body 1 is also provided with a cutting edge portion 3. There are three cutting edge portions 3. The cutting edge portion 3 consists of a rake face 31, a corner round The arc surface 32, the two edge surfaces 33 and the lower surface 12 are enclosed, and the two edge surfaces 33 intersect with the rake surface 31 to form two side cutting edges 34, which are connected to the rear ends of the two side cutting edges by trimming. Edge 3A, the angle between the two side cutting edges 34 is the cutting edge angle 35, the rake face 31 gradually sinks from the edge arc surface 32 to the direction of th...

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