Lengthened four-edge heavy type flat cutter

Abstract

The utility model provides a lengthened four-blade strong heavy type flat cutter, which comprises a four-blade flat cutter main body and a lengthened rod connected with the four-blade flat cutter main body, a connecting part is fixed on the lengthened rod, a mounting groove is arranged on the side wall of the connecting part, the four-blade flat cutter main body is inserted in the connecting groove in a matching way, and the four-blade flat cutter main body is fixed on the lengthened rod. Clamping grooves are formed in the two ends of the four-blade flat cutter body, positioning grooves penetrating through the four-blade flat cutter body are formed in the inner walls of the clamping grooves, mounting blocks inserted into the clamping grooves in a matched mode are embedded in the connecting parts, and telescopic grooves are formed in the ends, extending out of the connecting parts, of the mounting blocks; a telescopic groove is formed in the bottom end of the four-blade flat cutter body, a clamping block abutting against the side wall of the connecting part is elastically arranged in the telescopic groove, a plurality of spiral chip removal grooves are formed in the bottom end of the four-blade flat cutter body, cutter edges are arranged on the side walls of the chip removal grooves, the four-blade flat cutter body and the connecting part are directly kept fixed through a mounting block, and the mounting stability of the four-blade flat cutter body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of four-edge flat knives, in particular to an extended four-edge strong heavy flat knife. Background Art

[0002] A milling cutter is a rotary tool with several teeth used for milling. It is mainly used on milling machines to process planes, steps, grooves, molded surfaces and cut off. When working, the teeth of the milling cutter cut off the excess of the workpiece. During the use of the milling machine, due to the different milling processes of different workpieces, different types of milling cutters are required for combined milling. Therefore, how to conveniently and quickly replace different types of milling cutters is a problem that needs to be solved at present.

[0003] The patent with application number 202320457197.6 discloses a combined milling cutter, which includes a ball-end cutter and a tool rod. The ball-end cutter is provided with a tool head. The ball-end cutter is also provided with a mounting portion and a guide portion. The guide portion is arranged at one end of the mounting portion away from the tool head; a mounting hole for inserting the guide portion is opened on the tool rod, and the guide portion can be fixed to the tool rod after being inserted into the mounting hole.

[0004] The above technical solution only disassembles and replaces the milling cutter by thread fixing. However, the milling cutter with thread fixing is very prone to thread slippage during use, resulting in poor stability of the milling cutter installation. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies in the prior art and provide an extended four-edged strong flat cutter. The function of axially fixing the four-edged flat cutter body and the connecting rod is achieved by coordinating the connecting portion structure on the extension rod with the slot on the four-edged flat cutter body, thereby solving the problem of poor installation stability of the milling cutter.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an extended four-blade heavy-duty flat knife, comprising a four-blade flat knife body and an extension rod connected to the four-blade flat knife body, a connecting part is fixed on the extension rod, a mounting groove is provided on the side wall of the connecting part, the four-blade flat knife body is fitted and inserted in the connecting groove, and both ends of the four-blade flat knife body are provided with a clamping groove, the inner wall of the clamping groove is provided with a positioning groove that penetrates the four-blade flat knife body, a mounting block is embedded in the connecting part and fitted and inserted in the clamping groove, a telescopic groove is provided on one end of the mounting block extending out of the connecting part, and a clamping block abutting against the side wall of the connecting part is elastically provided in the telescopic groove.

[0007] Preferably, a plurality of spiral chip removal grooves are provided at the bottom end of the four-edged flat knife body, and a cutting edge is provided on the side wall of the chip removal groove.

[0008] Preferably, the outer wall of the extension rod is symmetrically provided with fastening grooves, the four-edged flat knife body is inserted into the connecting portion through the slot, and the four-edged flat knife body is axially fixed to the extension rod.

[0009] Preferably, a fixed through groove connected to the mounting groove is formed at the bottom end of the connecting portion, and the mounting block is inserted into the through groove.

[0010] Preferably, a pull plate is fixed on the mounting block, and the pull plate abuts against a side wall of the connecting portion.

[0011] Preferably, an inclined groove is provided at one end of the clamping block, and an anti-dropping portion is fixedly mounted at the other end of the clamping block.

[0012] Preferably, the inclined groove abuts against the inner walls of the through groove and the clamping groove, and the anti-slip portion is clamped with the inner wall of the telescopic groove.

[0013] Preferably, a spring is embedded in the telescopic slot, and two ends of the spring are respectively in contact with the inner wall of the telescopic slot and the anti-slip portion.

[0014] The beneficial effects of the utility model are:

[0015] (1) The utility model provides a card slot on the main body of the four-blade flat knife, and the main body of the four-blade flat knife is inserted into the installation slot provided on the connecting part through the card slot, so that the main body of the four-blade flat knife and the extension rod are kept fixed. At the same time, a positioning slot and a through slot are respectively provided on the main body of the four-blade flat knife and the connecting part, and a mounting block is fixedly inserted between the positioning slot and the through slot. The main body of the four-blade flat knife and the connecting part are directly fixed by the mounting block, thereby improving the stability of the installation of the main body of the four-blade flat knife.

[0016] (2) The utility model fixes a pull plate at one end of the mounting block, and symmetrically opens a telescopic groove at the other end of the mounting block. When the mounting block is inserted into the through groove and the positioning groove, the inclined groove on the card block abuts against the inner walls of the through groove and the positioning groove, thereby squeezing the card block to shrink into the telescopic groove. After the mounting block passes through the through groove, the spring in the telescopic groove pushes the positioning block to protrude from the side wall of the mounting portion, and the positioning block abuts against the side wall of the mounting portion. The mounting block is kept fixed in the connecting portion by the pull plate and the positioning block. When the mounting block is disassembled, the card block is squeezed to shrink into the telescopic groove, and the pull plate is held to pull the mounting block out of the connecting portion, which is convenient for installing and disassembling the four-blade flat knife body, thereby improving the convenience of installing the four-blade flat knife body.

[0017] To sum up, the utility model has the advantages of improving the stability of the installation of the four-blade flat knife body and improving the convenience of the installation of the four-blade flat knife body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the main structure of the four-edged flat knife of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the extension rod of the utility model;

[0021] Figure 4 This is a schematic diagram of the split structure of the installation block of the utility model.

[0022] In the figure: 1. Four-edged flat knife body; 2. Connecting part; 3. Extension rod; 4. Fastening groove; 5. Knife edge; 6. Chip removal groove; 7. Positioning groove; 8. Clamping groove; 9. Through groove; 10. Mounting groove; 11. Mounting block; 12. Pull plate; 13. Anti-slip part; 14. Telescopic groove; 15. Clamping block; 16. Spring; 17. Inclined groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0025] Embodiment 1

[0026] like Figure 1As shown, this embodiment provides an extended four-blade heavy-duty flat knife, including a four-blade flat knife body 1 and an extension rod 3 connected to the four-blade flat knife body 1, a connecting portion 2 is fixed on the extension rod 3, a mounting groove 10 is provided on the side wall of the connecting portion 2, the four-blade flat knife body 1 is fitted and inserted in the connecting groove, and both ends of the four-blade flat knife body 1 are provided with a card slot 8, the inner wall of the card slot 8 is provided with a positioning groove 7 that penetrates the four-blade flat knife body 1, and a mounting block 11 is embedded in the connecting portion 2 and is fitted and inserted in the card slot 8, and the mounting block 11 extends out of the connecting portion 2 is provided with a telescopic groove 14, and a clamping block 15 is elastically provided in the telescopic groove 14 and abuts against the side wall of the connecting part 2. The four-blade flat knife body 1 is inserted into the mounting groove 10 provided on the connecting part 2 through the clamping groove 8, so that the four-blade flat knife body 1 and the extension rod 3 are kept fixed. At the same time, a positioning groove 7 and a through groove 9 are respectively provided on the four-blade flat knife body 1 and the connecting part 2, and a mounting block 11 is fixedly inserted between the positioning groove 7 and the through groove 9, and the four-blade flat knife body 1 and the connecting part 2 are directly fixed by the mounting block 11.

[0027] like Figure 1 and Figure 2 As shown, a plurality of spiral chip grooves 6 are provided at the bottom end of the four-blade flat knife body 1, and a cutting edge 5 is provided on the side wall of the chip groove 6. A fastening groove 4 is symmetrically provided on the outer wall of the extension rod 3. The four-blade flat knife body 1 is inserted in the connecting part 2 through the card slot 8, and the four-blade flat knife body 1 is axially fixed to the extension rod 3. A fixed through groove 9 connected to the mounting groove 10 is provided at the bottom end of the connecting part 2, and the mounting block 11 is inserted in the through groove 9. The four-blade flat knife body 1 is inserted in the mounting groove 10 provided on the connecting part 2 through the card slot 8, so that the four-blade flat knife body 1 and the extension rod 3 are kept fixed. At the same time, a positioning groove 7 and a through groove 9 are respectively provided on the four-blade flat knife body 1 and the connecting part 2, and a mounting block 11 is fixedly inserted between the positioning groove 7 and the through groove 9, so that the four-blade flat knife body 1 and the connecting part 2 are directly kept fixed by the mounting block 11.

[0028] like Figure 3 and Figure 4As shown, a pull plate 12 is fixed on the mounting block 11, and the pull plate 12 abuts against the side wall of the connecting portion 2. An inclined groove 17 is provided at one end of the clamping block 15, and an anti-slip portion 13 is fixedly installed at the other end of the clamping block 15. The inclined groove 17 abuts against the inner walls of the through groove 9 and the clamping groove 8, and the anti-slip portion 13 is clamped with the inner wall of the telescopic groove 14. A spring 16 is embedded in the telescopic groove 14, and the two ends of the spring 16 abut against the inner wall of the telescopic groove 14 and the anti-slip portion 13 respectively. When the mounting block 11 is inserted into the through slot 9 and the positioning slot 7, the inclined slot 17 on the clamping block 15 abuts against the inner walls of the through slot 9 and the positioning slot 7, thereby squeezing the clamping block 15 to shrink into the telescopic slot 14. After the mounting block 11 passes through the through slot 9, the spring 16 in the telescopic slot 14 pushes the positioning block to protrude from the side wall of the mounting portion, and at the same time, the positioning block abuts against the side wall of the mounting portion, and the mounting block 11 is kept fixed in the connecting portion 2 by the pull plate 12 and the positioning block.

[0029] Working steps

[0030] Step 1: When installing the four-edged flat knife body 1, the four-edged flat knife body 1 is inserted into the installation groove 10 on the connecting part 2, so that the four-edged flat knife body 1 and the extension rod 3 are kept fixed. At the same time, the four-edged flat knife body 1 and the connecting part 2 are respectively provided with a positioning groove 7 and a through groove 9. When the mounting block 11 is fixedly inserted between the positioning groove 7 and the through groove 9, when the mounting block 11 is inserted into the through groove 9 and the positioning groove 7, the inclined groove 17 on the clamping block 15 is aligned with the through groove 9 and the positioning groove 7. The inner wall of the groove 7 abuts, thereby squeezing the card block 15 to shrink into the telescopic groove 14. When the mounting block 11 passes through the through groove 9, the spring 16 in the telescopic groove 14 pushes the positioning block to protrude from the side wall of the mounting portion. At the same time, the positioning block abuts against the side wall of the mounting portion, and the mounting block 11 is kept fixed in the connecting portion 2 by the pull plate 12 and the positioning block. When the mounting block 11 is disassembled, the card block 15 is squeezed to shrink into the telescopic groove 14, and the pull plate 12 is held to pull the mounting block 11 out of the connecting portion 2.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An extended four-edged heavy-duty flat knife, comprising a four-edged flat knife body (1) and an extended rod (3) connected to the four-edged flat knife body (1), characterized in that: A connecting portion (2) is fixed on the extension rod (3), and a mounting groove (10) is provided on the side wall of the connecting portion (2); The four-edged flat knife body (1) is inserted into the connecting groove, and both ends of the four-edged flat knife body (1) are provided with a clamping groove (8), and the inner wall of the clamping groove (8) is provided with a positioning groove (7) penetrating the four-edged flat knife body (1); The connecting portion (2) is embedded with a mounting block (11) which is inserted into the card slot (8); an end of the mounting block (11) extending out of the connecting portion (2) is provided with a telescopic slot (14); and a card block (15) which abuts against a side wall of the connecting portion (2) is elastically provided in the telescopic slot (14).

2. The extended four-edged heavy-duty flat knife according to claim 1, characterized in that: A plurality of spiral chip removal grooves (6) are provided at the bottom end of the four-edged flat knife body (1), and a knife edge (5) is provided on the side wall of the chip removal groove (6).

3. The extended four-edged heavy-duty flat knife according to claim 1, characterized in that: The outer wall of the extension rod (3) is symmetrically provided with fastening grooves (4); the four-edged flat knife body (1) is inserted into the connecting portion (2) through a clamping groove (8); and the four-edged flat knife body (1) and the extension rod (3) are axially fixed.

4. The extended four-edged heavy-duty flat knife according to claim 1, characterized in that: A fixed through groove (9) connected to the mounting groove (10) is formed at the bottom end of the connecting portion (2), and the mounting block (11) is inserted into the through groove (9).

5. The extended four-edged heavy-duty flat knife according to claim 1, characterized in that: A pull plate (12) is fixed on the mounting block (11), and the pull plate (12) abuts against the side wall of the connecting portion (2).

6. The extended four-edged heavy-duty flat knife according to claim 1, characterized in that: An inclined groove (17) is provided at one end of the clamping block (15), and an anti-dropping portion (13) is fixedly mounted at the other end of the clamping block (15).

7. The extended four-edged strong flat knife according to claim 6, characterized in that: The inclined groove (17) abuts against the inner walls of the through groove (9) and the clamping groove (8), and the anti-slip portion (13) is clamped with the inner wall of the telescopic groove (14).

8. The extended four-edged heavy-duty flat knife according to claim 7, characterized in that: A spring (16) is embedded in the telescopic groove (14), and two ends of the spring (16) are respectively in contact with the inner wall of the telescopic groove (14) and the anti-slip portion (13).

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