CN214517982U

CN214517982U - Scraper for machining pin shaft hole

Info

Publication number: CN214517982U
Application number: CN202023115500.XU
Authority: CN
Inventors: 杨帆; 李志贞; 徐欣; 张声殿; 于晓康; 张伟; 薛冲; 常文程; 邵凯
Original assignee: Yantai Aidi Ruineng Superhard Cutting Tool Co ltd
Current assignee: Yantai Aidi Ruineng Superhard Cutting Tool Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-10-29
Anticipated expiration: 2030-12-22

Abstract

The utility model relates to a scraper for processing pin shaft hole, which comprises a connecting rod and a cutter body arranged at the end part of the connecting rod, and is characterized in that the cutter body comprises a cutter body and cutter grooves, the cutter body is arc-shaped, at least two cutter grooves are arranged on the arc surface of the cutter body, and the two cutter grooves are arranged at the end part of the cutter body in a ladder way; the cutter groove is positioned at the vertex angle of the ladder and comprises a bottom surface and two side walls, a raised top block is arranged on each side wall, and a protection groove for protecting the indexable blade is arranged at the joint of each side wall, the bottom surface and the two side walls; the indexable insert is fixed at the pocket by a screw. The application provides a can improve work piece machining efficiency, simple structure and removable blade's novel scraper.

Description

Scraper for machining pin shaft hole

Technical Field

The utility model relates to a scraper for processing round pin shaft hole belongs to cutter technical field for the lathe.

Background

In the machining process of the breaking hammer shell, the situation that the diameters of pin shaft holes are large is often met, the inner side end face of each pin shaft hole is machined in an interpolation mode through a cutter with the diameter smaller than the diameter of the pin shaft hole, the interpolation machining mode is relatively complex to operate, and machining efficiency of workpieces is affected. Therefore, how to rapidly machine the end face in the shaft hole becomes a problem for those skilled in the art to study.

SUMMERY OF THE UTILITY MODEL

The utility model provides the high machining efficiency of the medial surface in major diameter round pin shaft hole on the quartering hammer casing provides a scraper for processing round pin shaft hole.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a scraper for processing a pin shaft hole comprises a connecting rod and a cutter body arranged at the end part of the connecting rod, and is characterized in that the cutter body comprises a cutter body and cutter grooves, the cutter body is arc-shaped, at least two cutter grooves are arranged on the arc surface of the cutter body, and the two cutter grooves are arranged at the end part of the cutter body in a stepped manner; the cutter groove is positioned at the vertex angle of the ladder and comprises a bottom surface and two side walls, a raised top block is arranged on each side wall, and a protection groove for protecting the indexable blade is arranged at the joint of each side wall, the bottom surface and the two side walls; the indexable insert is fixed at the pocket by a screw.

The indexable insert in the application adopts a square insert, a resident milling insert can be selected for use, and each edge angle of the insert is a cutting edge.

The beneficial effects of the above technical scheme are: the cutter grooves are adopted, the indexable cutter blade is arranged in each cutter groove, the utilization efficiency of the cutter blade is improved while the processing surface is improved, the cutter edges of the cutter blade are protected, when the cutter edges for processing are seriously abraded, the angle of the cutter blade can be conveniently converted, the cutter blade can be used again, and the improvement of the processing efficiency is facilitated.

On the basis of the technical scheme, the utility model discloses a reach the convenience of use and the stability of equipment, can also make following improvement to foretell technical scheme:

furthermore, the side wall is divided into a first side wall and a second side wall, the included angle between the bottom surface and the surface of the workpiece is 1-4 degrees, and the included angle between the bottom surface and the first side wall is 90 degrees. The design has the advantages that the indexable insert is ensured to be in an inclined state, and the working cutting edge of the indexable insert protrudes out of the cutter body; the back angle of the cutter is increased, the friction is reduced, the cutting edge is sharp, the consumption of the blade can be reduced, and the comprehensive manufacturing cost of processing is reduced.

Furthermore, in the cutter grooves, the included angle of the second side walls of two adjacent cutter grooves is 30-40 degrees.

Further, in the cutter grooves, the distances from the second side walls of two adjacent cutter grooves to the rotating center of the cutter body are different, and the distance from the second side wall positioned at the front end of the rotating direction of the cutter body to the rotating center of the cutter body is smaller than the distance from the second side wall positioned at the rear end to the rotating center of the cutter body.

Further, in the cutter groove, the maximum working radius of the indexable insert located in front of the cutter body in the rotating direction is larger than the minimum working radius of the indexable insert located in back of the cutter body in the rotating direction.

The beneficial effect of above-mentioned design is: through the design of the position structure of the cutter groove, the cutting edge of the cutter is effectively lengthened, the application range of the cutter is improved, and the maximum cutting edge is the sum of the cutting edge lengths of the cutter.

The utility model has the advantages that: the novel scraper can improve the processing efficiency of workpieces, has a simple structure and can replace blades.

Drawings

FIG. 1 is a schematic view of a doctor blade for machining pin bores according to the present application;

FIG. 2 is a schematic view of the discrete structure of FIG. 1;

FIG. 3 is a schematic view of the structure of the cutter body;

FIG. 4 is a schematic view of a sipe configuration;

FIG. 5 is a schematic end view of the cutter body;

fig. 6 is a schematic view of the configuration of an indexable insert.

The reference numbers are recorded as follows:

1-connecting rod, 2-cutter body, 3-indexable blade and 4-screw;

2.1-cutter body and 2.2-cutter groove; 2.21-top piece, 2.22-guard trench, 2.23-bottom, 2.24-side, 2.241-first side, 2.242-second side.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

The specific structure of the scraper for processing the pin shaft hole is described with reference to fig. 1-6, and comprises a connecting rod 1 and a cutter body 2 mounted at the end of the connecting rod 1, wherein the cutter body 2 comprises a cutter body 2.1 and cutter grooves 2.2, the cutter body 2.1 is arc-shaped, at least two cutter grooves 2.2 are arranged on the arc surface of the cutter body 2.1, and the two cutter grooves 2.2 are arranged at the end of the cutter body 2.1 in a ladder manner; the knife groove 2.2 is positioned at the top corner of the ladder, the knife groove 2.2 comprises a bottom surface 2.23 and two side walls 2.24, the side walls 2.24 are provided with raised top blocks 2.21, and the junctions of the side walls 2.24 and the bottom surface 2.23 and the two side walls 2.24 are provided with protective grooves 2.22 for protecting the indexable inserts 3; the indexable insert 3 is fixed in the pocket 2.2 by means of a screw 4.

Wherein, the side wall 2.24 is divided into a first side wall 2.241 and a second side wall 2.242, the included angle between the bottom surface 2.23 and the surface of the workpiece is 1-4 degrees, and the included angle between the bottom surface 2.23 and the first side wall 2.241 is 90 degrees.

In the cutter grooves 2.2, the included angle of the second side walls 2.242 of two adjacent cutter grooves 2.2 is 30-40 degrees; the distance from the second side wall 2.242 of two adjacent cutter grooves 2.2 to the rotation center of the cutter body is different, and the distance from the second side wall 2.242 positioned at the front end of the rotation direction of the cutter body 2 to the rotation center of the cutter body is smaller than the distance from the second side wall 2.242 positioned at the rear end to the rotation center of the cutter body; the maximum working radius of the indexable insert 3 located in front of the cutter body 2 in the rotational direction is larger than the minimum working radius of the indexable insert 3 located behind the cutter body 2 in the rotational direction.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A scraper for processing a pin shaft hole comprises a connecting rod (1) and a scraper body (2) arranged at the end part of the connecting rod (1), and is characterized in that the scraper body (2) comprises a scraper body (2.1) and cutter grooves (2.2), the scraper body (2.1) is arc-shaped, at least two cutter grooves (2.2) are arranged on the arc surface of the scraper body (2.1), and the two cutter grooves (2.2) are arranged at the end part of the scraper body (2.1) in a ladder manner; the tool groove (2.2) is positioned at the top corner of the ladder, the tool groove (2.2) comprises a bottom surface (2.23) and two side walls (2.24), a raised top block (2.21) is arranged on each side wall (2.24), and a protection groove (2.22) for protecting the indexable insert (3) is arranged at the joint of each side wall (2.24), the bottom surface (2.23) and each side wall (2.24); the indexable insert (3) is fixed at the cutter groove (2.2) through a screw (4).

2. A doctor blade for machining pin bores according to claim 1, characterized in that the side wall (2.24) is divided into a first side wall (2.241) and a second side wall (2.242), the angle between the bottom surface (2.23) and the surface of the workpiece is 1 ° to 4 °, and the angle between the bottom surface (2.23) and the first side wall (2.241) is 90 °.

3. A scraper blade for machining pin bores according to claim 2, characterized in that the included angle of the second side walls (2.242) of two adjacent cutter grooves (2.2) in the cutter grooves (2.2) is 30 ° to 40 °.

4. A scraper for machining pin bores according to claim 2, characterized in that in the cutter grooves (2.2), the second side walls (2.242) of two adjacent cutter grooves (2.2) have different distances from the center of rotation of the cutter body, and the second side wall (2.242) at the front end in the direction of rotation of the cutter body (2) has a smaller distance from the center of rotation of the cutter body than the second side wall (2.242) at the rear end.

5. A scraper blade for machining pin bores according to claim 4, characterized in that the maximum working radius of the indexable insert (3) located in front of the cutter body (2) in the direction of rotation is larger than the minimum working radius of the indexable insert (3) located behind the cutter body (2) in the direction of rotation in the cutter groove (2.2).