Multi-section stepped milling cutter

Abstract

The utility model discloses a multi-section stepped milling cutter, and relates to the technical field of milling cutter production and design. The device comprises a milling cutter body, the milling cutter body is formed by splicing and combining a first cutter, a second cutter and a third cutter from top to bottom, and the cutters are movably clamped; a connecting and fixing piece is arranged in the milling cutter body and used for fixing the cutters after the cutters are clamped. According to the device, all sets of cutters can be quickly disassembled and combined through the connecting and fixing pieces, when part of the cutters are damaged, the cutters can be quickly replaced, the cutters do not need to be integrally scrapped, the utilization rate of materials is increased, the special milling cutter can be combined according to requirements through combined use of multiple cutters, and the machining efficiency is improved. And the cutting requirements under different conditions are met, and the requirements of users are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to milling cutter production design technical field, concretely is a kind of multistage stepped milling cutter. BACKGROUND

[0002] Multistage stepped milling cutter is a kind of high-efficiency, multifunctional cutting tool, mainly used on the metal or non-metal workpiece and processes different diameter steps, grooves or profiles, and the multistage stepped milling cutter is distributed along the milling cutter axial direction multiple cutting segments with different diameters, and the length of each segment is usually equal or customized according to requirements.

[0003] The existing multistage stepped milling cutter is of integrated structure, and the corresponding multistage stepped milling cutter is usually produced according to requirements to process and manufacture materials, but any cutting segment is worn or broken, and the whole tool must be scrapped, which causes great waste, and since the diameter, length and helix angle of each segment of the milling cutter are determined during manufacturing, it is impossible to adjust according to processing requirements, and it is difficult to meet the needs of users, and there is limitation.

[0004] The reason for this problem is that when processing high-strength materials or intermittent cutting, some cutting segments may be broken due to impact load, and the remaining unworn segments still have processing capacity, but due to the integrated structure, the whole tool must be scrapped, which causes waste, and the helix angle and tooth shape of each segment of the integrated milling cutter are fixed, which is difficult to meet the multi-stage process requirements, and the customization time is long, which reduces the production and processing efficiency, therefore we propose a kind of multistage stepped milling cutter to solve the above problems. INVENTION CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a kind of multistage stepped milling cutter, solve any cutting segment wear or broken, need whole scrap, cause great waste, and since the diameter, length and helix angle of each segment of the milling cutter are determined during manufacturing, it is impossible to adjust according to processing requirements, and it is difficult to meet the needs of users, and there is limitation.

[0006] To achieve the above purpose, the utility model is realized by the following technical scheme: a kind of multistage stepped milling cutter, including milling cutter body, the milling cutter body is from top to bottom by first tool, second tool and third tool splicing combination, and the tool is movably connected between tool;

[0007] The milling cutter body is provided with connecting fixing piece inside, and the connecting fixing piece is used to fix the tool after the tool is connected.

[0008] Preferably, the connecting fixing piece includes a lug, a fixed seat and a first fastening bolt.

[0009] The protruding block is fixedly assembled at the bottom of the first cutter; the fixed seat is formed in the interior of the second cutter, the protruding block is movably clamped in the interior of the fixed seat; the first fastening bolt is threadedly connected in the interior of the second cutter, and the end of the first fastening bolt abuts against the protruding block.

[0010] Preferably, the connecting fixing member further comprises a connecting block and a connecting seat.

[0011] The connecting block is fixedly assembled at the bottom of the first cutter, and the connecting block is arranged in an annular array; the connecting seat is formed in the interior of the second cutter, and the connecting block is movably clamped in the interior of the connecting seat.

[0012] Preferably, the connecting fixing member further comprises an inserting block, an inserting seat and a second fastening bolt.

[0013] The inserting block is fixedly assembled at the bottom of the second cutter; the inserting seat is formed in the interior of the third cutter, the inserting block is movably clamped in the interior of the inserting seat; the second fastening bolt is threadedly connected in the interior of the third cutter, and the end of the second fastening bolt abuts against the inserting block.

[0014] Preferably, the connecting fixing member further comprises a positioning block and a positioning seat.

[0015] The positioning block is fixedly assembled at the bottom of the second cutter, and the positioning block is arranged in an annular array; the positioning seat is formed in the interior of the third cutter, and the positioning block is movably clamped in the interior of the positioning seat.

[0016] The utility model discloses a kind of multi-section type stepped milling cutter, and it has the beneficial effects as follows: the device makes each group of cutters between it can be quickly disassembled and combined by connecting fixing member, when facing part cutter damage, it can be quickly replaced, without the cutter overall scrapping, improve the utilization of material, by a variety of cutter combination use, can be combined into special milling cutter according to demand, meet the cutting demand under different situations, meet user demand. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced to the drawing needed to be used in embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for those skilled in the art, without creative labor, other drawings can also be obtained according to these drawings.

[0018] Figure 1 It is the whole schematic view of the utility model structure;

[0019] Figure 2 It is the milling cutter body structure explosion drawing of the utility model;

[0020] Figure 3 It is the bottom schematic view of the milling cutter body structure of the utility model.

[0021] In the figure: 1, milling cutter body;11, first cutter;12, second cutter;13, third cutter;2, connecting fixing part;21, protruding block;22, fixed seat;23, connecting block;24, connecting seat;25, first fastening bolt;26, plug-in block;27, socket;28, positioning block;29, positioning seat;210, second fastening bolt. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme in the embodiments of the utility model is clearly and completely described, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] The embodiment of the application provides a multi-section stepped milling cutter, solves the problem that any cutting section is worn or broken, needs to be scrapped as a whole, causes great waste, and since the diameter, length and spiral angle of each section of the milling cutter and other parameters are determined during manufacturing, the milling cutter cannot be adjusted according to processing requirements, it is difficult to meet the requirements of users, and there are limitations.

[0024] In order to better understand the above technical scheme, the above technical scheme will be described in detail in combination with the drawings of the specification and specific embodiments.

[0025] Embodiment one,

[0026] The utility model discloses a multi-section stepped milling cutter, according to the attached Figures 1-2 As shown in the figure, including milling cutter body 1, the first cutter 11, the second cutter 12 and the third cutter 13 are spliced and combined from top to bottom to the milling cutter body 1, and the cutters are movably connected between the cutters.

[0027] The connecting fixing part 2 is arranged in the milling cutter body 1, and is used for fixing the cutters after the cutters are connected.

[0028] The connecting fixing part 2 comprises a lug 21, a fixing seat 22 and a first fastening bolt 25; the lug 21 is fixedly assembled at the bottom of the first cutter 11; the fixing seat 22 is formed in the interior of the second cutter 12, and the lug 21 is movably clamped in the interior of the fixing seat 22; the first fastening bolt 25 is threadedly connected in the interior of the second cutter 12, and the end of the first fastening bolt 25 abuts against the lug 21; the connecting fixing part 2 further comprises a connecting block 23 and a connecting seat 24; the connecting block 23 is fixedly assembled at the bottom of the first cutter 11, and the connecting block 23 is arranged in an annular array; the connecting seat 24 is formed in the interior of the second cutter 12, and the connecting block 23 is movably clamped in the interior of the connecting seat 24.

[0029] In the embodiment, the first cutter 11 in the device is a drill bit, which is used for preliminarily punching the raw material, and the drill bit is the most easily-worn workpiece; when the first cutter 11 is replaced, the first fastening bolt 25 is first unscrewed, one hand holds the first cutter 11, the other hand holds the second cutter 12, and the two are pulled to the sides, so that the lug 21 is separated from the fixing seat 22, and the connecting block 23 is also separated from the connecting seat 24; at this time, the dismounting of the first cutter 11 is completed; a new first cutter 11 is inserted, the lug 21 and the connecting block 23 at the bottom of the new first cutter 11 are respectively aligned with the fixing seat 22 and the connecting seat 24, and are inserted into the bottom; at this time, the first fastening bolt 25 is screwed, and the end of the first fastening bolt 25 abuts against the lug 21, so that the mounting of the first cutter 11 is completed.

[0030] Embodiment two,

[0031] The utility model discloses a multi -section formula step milling cutter, on the basis of embodiment one, more specifically, according to the attached Figure 1 、 3 As shown in the figure, comprising milling cutter body 1, milling cutter body 1 from top to bottom by first cutter 11, second cutter 12 and third cutter 13 splicing combination is formed, and the cutter is movably clamped between the cutter.

[0032] Milling cutter body 1 is internally provided with connecting fixing part 2, and the connecting fixing part 2 is used to fix the cutter after clamping.

[0033] The connecting fixing part 2 further comprises an insertion block 26, a socket 27 and a second fastening bolt 210; the insertion block 26 is fixedly assembled at the bottom of the second cutter 12; the socket 27 is formed in the interior of the third cutter 13, and the insertion block 26 is movably clamped in the interior of the socket 27; the second fastening bolt 210 is threadedly connected in the interior of the third cutter 13, and the end of the second fastening bolt 210 abuts against the insertion block 26; the connecting fixing part 2 further comprises a positioning block 28 and a positioning seat 29; the positioning block 28 is fixedly assembled at the bottom of the second cutter 12, and the positioning block 28 is arranged in an annular array; the positioning seat 29 is formed in the interior of the third cutter 13, and the positioning block 28 is movably clamped in the interior of the positioning seat 29.

[0034] In the embodiment, the second cutter 12 is a cutting member, the second cutter 12 is used for machining the raw material, the third cutter 13 is a polishing member, the outer surface of the third cutter 13 is made of wear-resistant material, burrs and the like generated in cutting can be polished, so that the cutting surface of the raw material is smooth, when the second cutter 12 needs to be disassembled, the second fastening bolt 210 is unscrewed, the second cutter 12 is held by one hand, the third cutter 13 is held by the other hand, and the third cutter 13 is pulled to the two sides, so that the plug 26 is separated from the socket 27, and the positioning block 28 is separated from the positioning seat 29, at this time, the disassembly of the second cutter 12 is completed, the second cutter 12 is replaced, the plug 26 at the bottom of the second cutter 12 is aligned with the socket 27 and the positioning block 28 is aligned with the positioning seat 29, and is inserted into the bottom, at this time, the second fastening bolt 210 is screwed, the end of the second fastening bolt 210 abuts against the plug 26, the installation of the second cutter 12 is completed, the inside of the second cutter 12 is provided with a chip removal groove, the chip removal groove is used for removing the chips generated during machining, so as to avoid affecting the machining efficiency, the bottom of the third cutter 13 is a smooth structure, the milling cutter and the driving member are conveniently installed, and the requirement of the user is met.

[0035] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification only illustrate the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-section stepped cutter characterized by, Including milling cutter body (1), the milling cutter body (1) is combined from top to bottom by first cutter (11), second cutter (12) and third cutter (13), the cutter is movably connected between cutters; The milling cutter body (1) is internally provided with connecting fixing part (2), which is used to fix the cutter after the cutter is connected.

2. A multi-segment stepped cutter according to claim 1, wherein: The connecting fixing part (2) comprises; Lug (21), which is fixedly assembled at the bottom of the first cutter (11); Fixed seat (22), which is opened in the inside of the second cutter (12), the lug (21) is movably connected in the inside of the fixed seat (22); First fastening bolt (25), which is threadedly connected in the inside of the second cutter (12), the end of the first fastening bolt (25) abuts against the lug (21).

3. A multi-segment stepped cutter according to claim 1 wherein: The connecting fixing part (2) further comprises; Connecting block (23), which is fixedly assembled at the bottom of the first cutter (11), the connecting block (23) is arranged in annular array; Connecting seat (24), which is opened in the inside of the second cutter (12), the connecting block (23) is movably connected with the connecting seat (24).

4. A multi-segment stepped cutter according to claim 1 wherein: The connecting fixing part (2) further comprises; Plug block (26), which is fixedly assembled at the bottom of the second cutter (12); Socket (27), which is opened in the inside of the third cutter (13), the plug block (26) is movably connected in the inside of the socket (27); Second fastening bolt (210), which is threadedly connected in the inside of the third cutter (13), the end of the second fastening bolt (210) abuts against the plug block (26).

5. A multi-segment stepped cutter according to claim 1 wherein: The connecting fixing part (2) further comprises; Positioning block (28), which is fixedly assembled at the bottom of the second cutter (12), the positioning block (28) is arranged in annular array; Positioning seat (29), which is opened in the inside of the third cutter (13), the positioning block (28) is movably connected in the inside of the positioning seat (29).

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