Four-blade square shoulder milling cutter

Abstract

The utility model provides a four-blade square shoulder milling cutter, and belongs to the technical field of cutters. The problem that blades on an existing milling cutter are not stably installed is solved. The four-edge square shoulder milling cutter comprises a cutter head and a plurality of blades mounted on the cutter head, a plurality of cutter grooves for mounting the blades are formed in the cutter head, each blade is composed of two cutter bodies arranged in a mirror image manner, the blades are mounted on the cutter grooves in a transposition manner, the two cutter bodies are integrally connected through a cutter holder, and positioning parts are arranged at the positions, corresponding to the cutter grooves, of the cutter head. The end faces of the blades abut against the bottom faces of the positioning parts, positioning guide strips protruding outwards are arranged on the bottom faces of the positioning parts, and guide grooves matched with the guide strips in a sliding mode are formed in the corresponding end faces of the two blades. The blade mounting structure has the advantages that the blade is stably mounted and the working stability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tool tools and relates to a milling cutter, in particular to a four-edge square shoulder milling cutter. Background Art

[0002] A milling cutter usually includes a cutter disc and multiple blades arranged on the cutter disc. Conventional blades are integrally arranged on the cutter disc, but since the degree of damage of each blade is different, if one of the blades is severely worn and needs to be replaced, the entire milling cutter must be discarded. Therefore, milling cutters that can replace individual blades are currently used on the market, but the blade installation on the milling cutter is not stable enough, which affects its use. Summary of the invention

[0003] The utility model aims to solve the above problems existing in the prior art and provides a four-edge square shoulder milling cutter which can improve the installation stability of the blade.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a four-edge square shoulder milling cutter, comprising a cutter disc and a plurality of blades installed on the cutter disc, characterized in that the cutter disc has a plurality of tool grooves for installing the blades, the blades are composed of two mirror-imaged cutter bodies, the blades are indexably installed on the tool grooves, the two cutter bodies are integrally connected through a cutter seat, a positioning portion is provided at the position corresponding to the tool groove on the cutter disc, the bottom surface of the positioning portion is for the end face of the blade to abut, and the bottom surface of the positioning portion has a positioning guide strip protruding outward, and the corresponding end faces of the two blades have guide grooves that slide with the guide strip.

[0005] In the above-mentioned four-edge square shoulder milling cutter, a screw hole 1 is provided on the groove wall of the tool groove, a screw hole 2 is provided on the blade, and the blade is installed in the tool groove by means of screws.

[0006] Compared with the prior art, the four-edge square shoulder milling cutter has the advantages of stable blade installation and improved working stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a three-dimensional diagram of the four-edge square shoulder milling cutter.

[0008] Figure 2 yes Figure 1 Enlarged view of point A in .

[0009] In the figure, 1, cutter disc; 2, blade; 3, cutter body; 4, cutter seat; 5, positioning part; 6, positioning guide strip; 7, guide groove; 8, screw. DETAILED DESCRIPTION

[0010] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0011] like Figure 1 , Figure 2 As shown, the four-edge square shoulder milling cutter comprises a cutter disc 1 and a plurality of blades 2 mounted on the cutter disc 1. The cutter disc 1 has a plurality of tool grooves for installing the blades 2. The blades 2 are composed of two mirror-imaged tool bodies 3. The blades 2 are rotationally installed on the tool grooves. After the tool body 3 on one side is worn, it can be replaced with the tool body 3 on the other side and then installed and used. The two tool bodies 3 are integrally connected through a tool seat 4. A positioning portion 5 is provided at the position corresponding to the tool groove on the cutter disc 1. The bottom surface of the positioning portion 5 is for the end face of the blade 2 to abut, and the bottom surface of the positioning portion 5 has an outwardly protruding positioning guide strip 6. The corresponding end faces of the two blades 2 have a guide groove 7 that slides with the guide strip. Through the cooperation of the guide strip and the guide groove 7, the installation of the blade 2 is more stable, and an axial limiting effect is achieved, and the blade 2 is not easy to shake.

[0012] Preferably, a screw hole 1 is provided on the groove wall of the knife groove, a screw hole 2 is provided on the blade 2, and the blade 2 is installed in the knife groove by means of a screw 8.

[0013] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0014] Although the present invention uses more terms such as cutter disc 1, blade 2, cutter body 3, cutter seat 4, positioning portion 5, positioning guide strip 6, guide groove 7, screw 8, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A four-edge square shoulder milling cutter, comprising a cutter disc (1) and a plurality of blades (2) mounted on the cutter disc (1), characterized in that: The blade disc (1) has a plurality of blade grooves for mounting the blades (2), the blades (2) are composed of two blade bodies (3) arranged in mirror image, the blades (2) are pivotally mounted on the blade grooves, the two blade bodies (3) are integrally connected via a blade seat (4), the blade disc (1) has a positioning portion (5) at the position corresponding to the blade groove, the bottom surface of the positioning portion (5) is for the end surface of the blade (2) to abut, and the bottom surface of the positioning portion (5) has a positioning guide strip (6) protruding outward, and the corresponding end surfaces of the two blades (2) have a guide groove (7) that is slidably matched with the guide strip.

2. A four-edge square shoulder milling cutter according to claim 1, characterized in that: A screw hole 1 is provided on the groove wall of the knife groove, a screw hole 2 is provided on the blade (2), and the blade (2) is installed in the knife groove by means of a screw (8).

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