CN107598291A - A radial scraper - Google Patents

Abstract

The invention discloses a radial scraper, which comprises a cutter head and a cutter bar, and is characterized in that: the cutter head comprises a scraping blade surface, a front cutter surface and a rear cutter surface, the rear cutter surface and the scraping blade surface are arc surfaces, and the scraping blade surface and the front cutter surface are intersected to form a first cutting edge; the first cutting edge is connected with the top point of the cutter head, and the distance between the first cutting edge and the top point of the cutter head is greater than that between the second cutting edge and the top point of the cutter head.

Description

A radial scraper

technical field

The invention relates to a cutter, especially a radial scraper.

Background technique

The mobile phone shell needs to process arc-shaped grooves, and the groove surface of the arc-shaped grooves is required to be very smooth. We usually use ball cutters to process them before. Ball cutter milling is not only slow, but also the smoothness of the processed grooves cannot meet the requirements. Therefore, we design A scraper was developed to meet the new requirements.

Contents of the invention

In order to overcome the shortcomings of the prior art, the invention provides a radial scraper.

The technical solution adopted by the present invention to solve its technical problems is:

A radial scraper, including a cutter head and a cutter bar, is characterized in that: the cutter head includes a scraping edge surface, a rake surface and a flank surface, and the flank surface and the scraping edge surface are arc-shaped surfaces, so The intersection of the scraping edge surface and the rake face forms the first cutting edge; the intersection of the scraping edge surface and the flank surface forms the second cutting edge, and a transition surface is provided on the cutter bar, and the transition surface connects with the rake surface , the distance between the first cutting edge and the apex of the cutter head is greater than the distance between the second cutting edge and the apex of the cutter head.

A positioning surface is provided on the cutter bar, and the positioning surface is connected with the transition surface.

The relief surface includes a first relief surface and a second relief surface.

Both sides of the cutter head are provided with inclined escape surfaces.

The beneficial effects of the present invention are: the cutter faces the mobile phone shell through the scraping edge to process, the tool does not move during processing, the mobile phone shell moves, the first cutting edge touches the mobile phone shell first, cuts off the metal at a certain depth in the upper layer, and leaves a little processing The margin, then scraping the edge surface and then scraping the rest needs to cut off the metal, the scraping edge surface can not only achieve the purpose of scraping, but also squeeze the metal during the scraping process to make it tight and smooth, through the second cutting The blade is polished to obtain a curved groove with a high degree of smoothness. The above process is completed at one time, which not only meets the requirements of a high degree of smoothness, but also has high efficiency.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a structural view of the present invention;

Fig. 2 is a bottom view of the present invention.

detailed description

Referring to Fig. 1 and Fig. 2, the present invention discloses a radial scraper, including a cutter head 1 and a cutter bar 2, the cutter head 1 includes a scraping edge surface 3, a rake face 4 and a flank face, and the rear cutter The surface and the scraping edge surface 3 are arc-shaped surfaces, and the scraping edge surface 3 intersects with the rake face 4 to form the first cutting edge 5; the scraping edge surface 3 intersects with the flank surface to form the second cutting edge 6, thereby The first cutting edge 5 and the second cutting edge 6 are arc-shaped, so that the arc-shaped grooves can be scraped out. The knife bar 2 is provided with a transition surface 7, through which the function of chip removal can be played, and by The transition surface 7 can avoid the problem of stress concentration and reduce the strength of the cutter head 1. The transition surface 7 is connected to the rake face 4, and the distance between the first cutting edge 5 and the apex of the cutter head 1 is greater than that of the second cutting edge. 6. The distance from the apex of the cutter head 1, so that the scraping edge surface 3 is an inclined arc surface, so that the purpose of scraping and extruding metal can be played in processing.

As shown in the figure, a positioning surface 8 is provided on the cutter bar 2, and the positioning surface 8 is connected with the transition surface 7, which is convenient for positioning before processing.

The flank includes a first relief surface 9 and a second relief surface 10 . In the above-mentioned structure, the design of multiple consecutive flanks is beneficial to gradually reduce the relief angle from a large angle to a small angle relief angle, which can not only ensure that the cutter head 1 has sufficient strength, but also reduce the friction between the cutting edge and the processing surface , To prevent heat, thus effectively improving cutting accuracy.

Both sides of the cutter head 1 are provided with inclined escape surfaces 11, which can prevent other parts of the cutter head 1 from touching the processing surface during processing.

The radial scraper provided by the embodiment of the present invention has been introduced in detail above. The principle and implementation of the present invention have been explained by using specific examples in this paper. The description of the above embodiment is only used to help understand the present invention. method and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. Invention Limitations.

Claims (4)

1. A radial scraper, comprising a cutter head and a cutter bar, is characterized in that: the cutter head includes a scraping edge surface, a rake face and a flank face, and the flank face and the scraping edge face are arc-shaped surfaces , the scraping edge surface intersects with the rake face to form a first cutting edge; Contiguously, the distance between the first cutting edge and the apex of the cutter head is greater than the distance between the second cutting edge and the apex of the cutter head. 2 . The radial scraper according to claim 1 , wherein a positioning surface is provided on the knife rod, and the positioning surface is in contact with the transition surface. 3 . 3 . The radial scraper according to claim 1 , wherein the flank includes a first flank and a second flank. 4 . 4. A radial scraper according to claim 1, characterized in that: both sides of the blade head are provided with inclined escape surfaces.