Double-sided fly cutter

Abstract

The utility model discloses a double-sided fly cutter which is composed of a large cutter head handle, a double-sided fly cutter head and a cutter head. The whole double-sided fly-cutter disc is of a disc-shaped structure, the upper face and the lower face of the double-sided fly-cutter disc are each provided with a set of cutter grooves, and a reserved hole is formed in the middle of the double-sided fly-cutter disc along the axis position. A mounting table is arranged on the face, in butt joint with the large cutter head handle, of the double-face fly cutter head, a mounting hole is formed in the mounting table, and an arc-shaped edge is arranged at the joint of the mounting table and the reserved hole. A boss matched with the mounting table and the arc-shaped edge is arranged at the top of the large cutter head handle, a threaded hole matched with the mounting hole is formed in the boss, and the double-sided fly cutter head is fixedly arranged on the large cutter head handle through a screw; the tool bit is fixedly arranged in the tool groove through the pressing block. The mounting table is arranged on the double-sided fly-cutter head, the mounting table is connected with the large cutter head handle, and the reserved hole in the center of the double-sided fly-cutter head is vacated for mounting and adjusting the cutter head, so that the adjusting range of the cutter head is larger, and the cutter head is suitable for more workpieces.

Description

Technical Field

[0001] This utility model relates to the field of machine tools, and in particular to the design of a double-sided flying knife for milling machines. Background Technology

[0002] Milling cutters (also known as fly cutters) are used for machining grooves or cavities. Existing single-sided milling cutters require reversing the cutter after machining one side to machine the other. In industrial production, this reversal operation, performed manually, significantly reduces work efficiency. To address this, existing technologies have designed double-sided milling cutters for open-cut section milling. However, these double-sided milling cutters suffer from unreasonable structural design, resulting in a limited cutter head adjustment range. Especially when switching between small and large workpieces, the entire cutter needs to be replaced, necessitating the preparation of multiple cutters. Furthermore, the connection method between the cutter head shank and the cutter disc limits the cutter's usability. For example, the indexable quick-change double-sided milling cutter in Chinese patent CN209077879U uses a cutter head shank fixed through the cutter disc, limiting its applicability to open-cut workpieces that extend vertically. Moreover, the cutter head adjustment range is limited by the width of the cutter disc, resulting in a small adjustment range. Summary of the Invention

[0003] The problem this utility model aims to solve is to propose an improvement or replacement solution to address the shortcomings of the prior art, especially a completely new design that, by changing the connection method between the milling cutter disc and the milling cutter disc shank, allows the double-sided milling cutter to be applied to a wider range of applications.

[0004] To solve the above problems, the present invention adopts the following solution: a double-sided throwing knife, characterized in that the double-sided throwing knife consists of a large knife disc handle, a double-sided throwing knife disc, and a cutting head; the double-sided throwing knife disc is generally in the shape of a disc, with a set of cutting grooves on its upper and lower surfaces, and a pre-reserved hole in the middle along the axis; the side of the double-sided throwing knife disc that connects with the large knife disc handle has a mounting platform, a mounting hole on the mounting platform, and an arc-shaped edge at the connection between the mounting platform and the pre-reserved hole; the top of the large knife disc handle has a boss that matches the mounting platform and the arc-shaped edge, and a threaded hole that matches the mounting hole on the boss; the double-sided throwing knife disc is fixedly mounted on the large knife disc handle by screws; the cutting head is fixedly mounted in the cutting groove by a pressure block.

[0005] Furthermore, the double-sided flying knife is characterized in that a pressure block mounting step is provided in the knife groove, and the side of the pressure block mounting step adjacent to the double-sided flying knife disc is set as an inclined surface. One side of the pressure block matches the inclined surface, and a step hole is provided in the middle of the pressure block. A threaded hole is provided on the pressure block mounting step. The pressure block is fixed on the pressure block mounting step by screws. The pressure block can move along the inclined surface to the inside of the knife groove while moving downward with the screws.

[0006] Furthermore, the double-sided flying knife is characterized in that two pressure blocks are provided in each knife groove.

[0007] Furthermore, the double-sided flying knife is characterized in that the upper and lower sides of the double-sided flying knife disc are each provided with four knife grooves, and the knife grooves on each side are in a cross shape, with the upper and lower sides arranged alternately.

[0008] Furthermore, the double-sided flying knife is characterized in that the pressure block mounting step is located at the outer opening of the knife groove and tapers inward to form a knife head groove.

[0009] The technical effects of this utility model are as follows: The double-sided flying knife of this application has a cutting head on the upper and lower surfaces of the double-sided flying knife disc, which can mill the upper and lower end faces of the workpiece at one time. Only one double-sided flying knife is needed to complete the upper and lower surfaces at the same time, saving time and effort.

[0010] A mounting platform is designed on one side of the double-sided flying cutter disc. The mounting platform is fixedly connected to the large cutting disc handle, so that the large cutting disc handle no longer needs to be inserted into the reserved hole of the double-sided flying cutter disc. The reserved hole is left open for the adjustment of the cutting head, expanding the adjustment range of the cutting head and no longer being limited by the width of the double-sided flying cutter disc.

[0011] To improve the installation accuracy of the double-sided flying cutter head and the large cutter head handle, as well as the stability of the double-sided flying cutter head during operation, an arc-shaped edge is set at the connection between the mounting platform and the reserved hole. This increases the contact area between the double-sided flying cutter head and the large cutter head handle, distributes the pressure of the screws, improves stability, and also facilitates the connection and fixation of the double-sided flying cutter head and the large cutter head handle.

[0012] The cutter head is fixed in the cutter groove by two pressure blocks. As the pressure blocks are lowered by the screw, they are also pressed into the cutter groove by the inclined plane, thus fixing the cutter head in the cutter groove.

[0013] A cutter head groove is provided on the mounting step of the pressure block, allowing the minimum cutter head size to be reduced to the outer diameter of the double-sided flying cutter disc. This further expands the adjustable range of the cutter head. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a double-sided flying knife structure.

[0015] Figure 2 This is a schematic diagram of the cross-section of a double-sided flying knife.

[0016] Figure 3 This is a schematic diagram of the front mounting of the double-sided flying knife disc.

[0017] Figure 4 This is a schematic diagram of a double-sided flying knife disc structure.

[0018] Figure 5 This is a schematic diagram showing the installation of the double-sided flying knife disc on the back.

[0019] Figure 6 This is a schematic diagram of the handle structure of a large blade disc.

[0020] Among them, 1 is the large cutter head handle, 2 is the double-sided flying cutter head, 3 is the cutter groove, 4 is the bevel, 5 is the pressure block, 6 is the cutter head (back), 7 is the cutter head (front), 8 is the pressure block mounting step, 9 is the mounting hole, 10 is the reserved hole, 11 is the mounting platform, 12 is the boss, 13 is the arc edge, and 14 is the cutter head groove. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] Example: Figure 1 As shown, a double-sided throwing knife is comprising a large blade handle, a double-sided throwing knife disc, and a cutting head. The double-sided throwing knife disc has a circular structure with a set of cutting grooves on both its upper and lower surfaces, and a pre-drilled hole in the center along its axis. A mounting platform is provided on the side of the double-sided throwing knife disc that connects to the large blade handle, and the mounting platform has a mounting hole. An arc-shaped edge is provided where the mounting platform connects to the pre-drilled hole. A boss matching the mounting platform and the arc-shaped edge is provided on the top of the large blade handle, and a threaded hole matching the mounting hole is provided on the boss. The double-sided throwing knife disc is fixed to the large blade handle with screws. The cutting head is fixed within the cutting groove by a pressure block.

[0023] The cutter slot has a pressure block mounting step, and the side of the pressure block mounting step adjacent to the double-sided flying cutter disc is set as an inclined surface. One side of the pressure block matches the inclined surface, and the pressure block has a stepped hole in the middle. The pressure block mounting step has a threaded hole, and the pressure block is fixed to the pressure block mounting step with screws. The pressure block can move downwards with the screws and move along the inclined surface inwards towards the cutter slot. Two pressure blocks are set in each cutter slot. The double-sided flying cutter disc has four cutter slots on each of its upper and lower sides, and the cutter slots on each side have a cross-shaped structure. The cutter heads on the same line on the same side are staggered (that is, two cutter heads in the same direction will not collide when adjusted inwards). The cutter heads on the upper and lower sides are also staggered, making the double-sided flying cutter disc structure more uniform and preventing any part from being particularly weak due to the installation of cutter heads. The pressure block mounting step is located at the outer opening of the cutter slot and tapers inwards to form a cutter head groove.

Claims

1. A double-sided flying knife, characterized in that, The double-sided fly cutter is composed of a large cutter handle, a double-sided fly cutter disc and a cutter head. The double-sided fly cutter disc is in a disc structure, and a group of cutter grooves are arranged on each of the upper and lower surfaces of the double-sided fly cutter disc. A reserved hole is arranged in the middle of the double-sided fly cutter disc along an axis. An installation table is arranged on the butt joint surface of the double-sided fly cutter disc and the large cutter handle, and an installation hole is arranged on the installation table. An arc-shaped edge is arranged at the connecting position of the installation table and the reserved hole. A convex table is arranged on the top of the large cutter handle, and a threaded hole is arranged on the convex table and matched with the installation hole. The double-sided fly cutter disc is fixedly arranged on the large cutter handle by screws. The cutter head is fixedly arranged in the cutter groove by a pressing block.

2. The double-sided fly cutter according to claim 1, characterized in that The pressing block installation step is arranged in the cutter groove, and the side of the pressing block installation step adjacent to the double-sided fly cutter disc is arranged as an inclined surface. One side of the pressing block is matched with the inclined surface, and a step hole is arranged in the middle of the pressing block. A threaded hole is arranged on the pressing block installation step, and the pressing block is fixed on the pressing block installation step by screws. The pressing block can move downwards along with the screws and move to the inside of the cutter groove along the inclined surface.

3. The double-sided fly cutter according to claim 1, wherein Two pressing blocks are arranged in each cutter groove.

4. The double-sided fly cutter according to claim 1, wherein Four cutter grooves are arranged on each of the upper and lower surfaces of the double-sided fly cutter disc, and the cutter grooves on each surface are in a cross structure and are arranged in a staggered manner.

5. The double-sided fly cutter according to claim 2, wherein The pressing block installation step is arranged at the outer opening of the cutter groove and is inwardly retracted to form a cutter head groove.

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