Tool bit structure capable of spraying cooling liquid through pressing plate

Abstract

A tool bit structure utilizing a pressing plate to spray cooling liquid comprises a tool disc, a plurality of blades, a plurality of screws and the pressing plate, a plurality of tool grooves and a plurality of screw holes in threaded connection with the screws are formed in the outer side face of the tool disc, the blades are locked in the tool grooves through the screws, and a first cooling pipeline is arranged in the tool disc. The pressing plate is locked on the outer side face of the cutter head through screws and tightly presses the blade in the radial direction, the pressing plate is provided with a second cooling pipeline communicated with the first cooling pipeline, and an outlet of the second cooling pipeline faces the cutting edge of the blade. According to the tool bit structure, the pressing plate tightly pressing the blade in the radial direction is arranged, meanwhile, the pressing plate is provided with the second cooling pipeline communicated with the first cooling pipeline, and the outlet of the second cooling pipeline faces the cutting edge of the blade, so that on one hand, the blade can be prevented from being thrown off, and on the other hand, the cooling effect can be improved; therefore, the milling working efficiency of the cutter is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to numerical control cutting with machine clamp formula tool field especially utilize the cutter head structure of pressboard jet cooling liquid. BACKGROUND

[0002] Cutting equipment becomes one of the indispensable manufacturing equipment in modern industrial manufacturing, and the cutters used in the market are various, and the cutter body is provided with a cooling function, for example, the utility model CN217701517U discloses a fast feed face milling cutter, which is provided with a press plate pressing on the surface of the blade to prevent the blade from flying out, and a central cooling hole is arranged in the middle of the cutter, a plurality of cooling hole branches are arranged on the wall of the central cooling hole, the outer side of the cooling hole branches is aligned with each blade, the cooling liquid is injected from the central cooling hole and is distributed into each cooling hole branch to cool each cutter head, and the cooling pipeline is directly arranged in the cutter to simplify the structure of the traditional cooling liquid pipeline.

[0003] However, in actual use, since the cooling hole is arranged far away from the blade, after the cooling liquid flows out of each cooling hole branch, less cooling liquid can accurately hit the blade, and the jet intensity of the cooling liquid is small, so that the actual effective cooling effect of the cooling liquid is greatly reduced, thereby reducing the milling efficiency of the cutter. UTILITY MODEL CONTENTS

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to design a cutter head structure for jetting cooling liquid by a press plate, which can ensure that the cooling liquid is accurately jetted at high pressure towards the working blade, improve the jet intensity of the cooling liquid, improve the actual effective cooling effect of the cooling liquid, and thus improve the milling efficiency of the cutter.

[0005] To achieve the above purpose, the utility model provides a cutter head structure for jetting cooling liquid by a press plate, which comprises: a cutter, a plurality of blades and a plurality of screws, the outer side of the cutter is provided with a plurality of blade grooves and a plurality of screw holes for screwing with the screws, the blades are locked in the blade grooves by the screws, and the cutter is provided with a first cooling pipeline.

[0006] Further, the first cooling pipeline comprises a central cooling hole and a plurality of cooling hole branches, and the two ends of the cooling hole branches are respectively communicated with the central cooling hole and the second cooling pipeline.

[0007] Further, the diameter of the central cooling hole is greater than the diameter of the cooling hole branch.

[0008] Further, the second cooling pipeline comprises a flow guide, a cooling flow channel and a nozzle, and the cooling hole branch, the flow guide, the cooling flow channel and the nozzle are communicated in sequence.

[0009] Further, the cooling flow channel is annular.

[0010] Further, the nozzle is wedge-shaped with a wide front and a narrow back.

[0011] Further, the second cooling pipeline further comprises a flow storage cavity, and the flow storage cavity is communicated with the nozzle and the cooling flow channel at two ends respectively, and the width of the two end faces of the flow storage cavity is greater than the inlet width of the nozzle.

[0012] Further, the cooling flow channel and the nozzle are arranged on the bottom surface of the pressing plate.

[0013] Further, the nozzle is wedge-shaped with a wide front and a narrow back.

[0014] Further, a gasket is arranged directly below the pressing plate.

[0015] After the above technical scheme is adopted, the beneficial effects are as follows: the pressing plate is arranged to press the blade in the radial direction, so that the blade is prevented from being thrown off, meanwhile, the pressing plate is provided with the second cooling pipeline communicated with the first cooling pipeline, and the outlet of the second cooling pipeline faces the cutting edge of the blade, so that the cooling liquid can be precisely sprayed at high pressure towards the blade working, thereby improving the cooling effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the tool bit structure according to the present application;

[0017] Figure 2 It is a top view of the tool bit structure according to the present application;

[0018] Figure 3 It is a top view sectional view of the tool bit structure according to the present application;

[0019] Figure 4 It is a rear view of the tool bit structure according to the present application;

[0020] Figure 5 It is a structural schematic view of the pressing plate of the tool bit structure according to the present application;

[0021] Figure 6 It is a sectional view of the pressing plate of the tool bit structure according to the present application;

[0022] The attached diagram is labeled as follows: 1. Cutter head; 2. Cutter groove; 3. Blade; 4. Pressure plate; 5. Screw; 6. First cooling pipe; 7. Second cooling pipe; 8. Gasket; 9. Fastening hole; 61. Central cooling hole; 62. Cooling hole branch; 71. Drainage channel; 72. Cooling flow channel; 73. Nozzle; 74. Flow storage chamber. Detailed Implementation

[0023] like Figures 1-3 As shown, this utility model provides a cutter head structure that utilizes a pressure plate to spray coolant, including: a cutter disc 1, several blades 3, and several screws 5. The outer side of the cutter disc 1 is provided with several cutting grooves 2 and several screw holes that are screwed into the screws 5. The blades 3 are locked in the cutting grooves 2 by the screws 5. A first cooling pipe 6 is provided inside the cutter disc 1. The cutter head structure also includes: a pressure plate 4, which is locked to the outer side of the cutter disc 1 by the screws 5 and presses the blades 3 radially. The pressure plate 4 is provided with a second cooling pipe 7 that communicates with the first cooling pipe 6. The outlet of the second cooling pipe 7 is arranged facing the cutting edge of the blade 3. In practical applications, the cutter disc 1 is provided with fastening holes 9 for mounting fasteners. After the fasteners pass through the fastening holes 9, they are locked with the cutter handle, thereby fixing the cutter disc 1 to the cutter handle. The fasteners can be screws, bolts, bolts, etc. By adding a second cooling pipe 7 in the pressure plate 4, the inlet of the second cooling pipe 7 is connected to the outlet of the first cooling pipe 6, and the outlet of the second cooling pipe 7 faces the cutting edge of the blade 3. When the coolant flows in from the inlet of the first cooling pipe 6, it can flow to the second cooling pipe 7 of the pressure plate 4, and then spray from the outlet of the second cooling pipe 7 towards the cutting edge of the blade 3, cooling the blade directly. This structural design allows the coolant to be precisely sprayed onto the working blade 3 for high-pressure cooling. Since the pressure plate 4 presses the blade 3 radially, the outlet of the second cooling pipe 7 is relatively close to the cutting edge of the blade 3, so the spray distance of the coolant is small, thereby improving the spray intensity of the coolant and improving the actual effective cooling effect of the coolant, thus improving the milling efficiency of the tool.

[0024] In actual milling processes, after long-term use, the screw 5 that fixes the insert 3 is prone to loosening due to continuous vibration under long-term stress. In severe cases, the screw 5 may break and fall off along with the insert 3. Therefore, pressing the insert 3 with the pressure plate 4 can prevent the insert 3 from falling off. In addition, since the pressure plate 4 that presses down on the insert 3 can share some of the force, it can reduce the stress on the screw 5 used to fix the insert 3, thereby avoiding the problem of the screw 5 breaking, extending the service life of the screw 5, and further saving costs.

[0025] The first cooling pipeline 6 comprises a central cooling hole 61 and a plurality of cooling hole branches 62, both ends of the cooling hole branches 62 are communicated with the central cooling hole 61 and the second cooling pipeline 7 respectively. The axis of the cutter head 1 passes through the central cooling hole 61, and the central cooling hole 61 is communicated with the fastening hole 9.

[0026] In the embodiment, the cutter head structure comprises five cutter blades 3, which are arranged in a circumferential array around the axis of the cutter head 1, and correspondingly, the cooling hole branches 62 are also five, as shown in the figure, the five cooling hole branches 62 are arranged in a circumferential array around the axis of the cutter head 1, and the five cooling hole branches 62 are all communicated with the central cooling hole 61. In other embodiments, other numbers of cutter blades 3 can also be provided. Figure 4

[0027] The diameter of the central cooling hole 61 of the embodiment is greater than the diameter of the cooling hole branch 62. The structure design can ensure that the capacity of the central cooling hole 61 can reserve sufficient cooling liquid, so that the cooling liquid can continuously flow into the cooling hole branch 62.

[0028] The second cooling pipeline 7 is provided with a flow guide channel 71, a cooling flow channel 72 and a nozzle 73, and the cooling hole branch 62, the flow guide channel 71, the cooling flow channel 72 and the nozzle 73 are communicated in sequence. As shown in the figure, the flow guide channel 71 guides the cooling liquid from the outlet of the cooling hole branch 62 to the cooling flow channel 72, and then sprays out from the nozzle 73, accurately aiming at the working cutter blade, realizing the cooling of the cutter blade. Figures 5-6

[0029] Preferably, the second cooling pipeline 7 further comprises a storage cavity 74, the two ends of the storage cavity 74 are communicated with the nozzle 73 and the cooling flow channel 72 respectively, and the width of the two end faces of the storage cavity 74 is greater than the inlet width of the nozzle 73. The storage cavity 74 not only plays a role of connecting the nozzle 73 and the cooling flow channel 72, but also helps to buffer the inertial impact of the cooling liquid flowing out of the cooling flow channel 72, changes the flow direction of the cooling liquid to the direction consistent with the outlet of the nozzle 73, so that the cooling liquid can be uniformly sprayed out through the nozzle 73. Preferably, the depth of the nozzle 73 and the depth of the cooling flow channel 72 are both less than the depth of the storage cavity 74, which is more conducive to buffering the inertial impact of the cooling liquid flowing out of the cooling flow channel 72.

[0030] Preferably, the cooling flow channel 72 is annular. Since the pressing plate 4 is fixed on the cutter head 1 by the screw 5, the middle part of the pressing plate 4 is provided with a fastening hole for the screw, so the available space of the pressing plate 4 is limited. In order to ensure the flow of the cooling liquid, the cooling flow channel 72 is annular, which can maximize the available space of the upper pressing plate 4.

[0031] ​​Preferably, the nozzle 73 is wedge-shaped with a wide front and a narrow back. The cooling liquid enters the nozzle 73 through the narrow opening, and the flow rate of the cooling liquid increases, forming a high-pressure state inside the nozzle, improving the jetting intensity of the cooling liquid, and improving the actual effective cooling effect of the cooling liquid.

[0032] Preferably, the nozzle 73 is wedge-shaped with a wide front and a narrow back. The cooling liquid enters the nozzle 73 through the narrow opening, and the flow rate of the cooling liquid increases, forming a high-pressure state inside the nozzle, improving the jetting intensity of the cooling liquid, and improving the actual effective cooling effect of the cooling liquid.

[0033] Preferably, the cooling channel 72 and the nozzle 73 are arranged on the bottom surface of the pressure plate 4. The bottom surface of the pressure plate 4 refers to the surface of the pressure plate 4 facing the cutter head 1. In actual milling, the flying slag may fall into the nozzle 73 and the cooling channel 72, and long-term use may cause blockage. When the cooling channel 72 and the nozzle 73 are exposed on the bottom surface of the pressure plate 4, the pressure plate 4 can be disassembled and cleaned when the cooling channel 72 and the nozzle 73 are blocked, prolonging the service life of the pressure plate 4 and saving costs.

[0034] Preferably, the pressure plate 4 and the cutter head 1 are provided with a gasket 8. After long-term use of the cutter, the pressure plate 4 is prone to loosen and will cause wear to the cutter head body 1. By stacking the pressure plate 4 and the gasket 8 together and fixing them on the cutter head body 1, the pressure plate 4 will only cause wear to the gasket 8, but not to the cutter head body 1, prolonging the service life of the cutter head 1 and thus reducing costs.

[0035] Preferably, the gasket 8 is formed of polytetrafluoroethylene and nitrile rubber materials. Both polytetrafluoroethylene and nitrile rubber are resistant to high temperature and have excellent corrosion resistance.

Claims

1. A tool bit structure for jetting coolant fluid with a pressure plate, comprising: The tool head structure comprises a tool disc, a plurality of blades and a plurality of screws, the outer side of the tool disc is provided with a plurality of blade grooves and a plurality of screw holes for screwing the screws, the blades are locked in the blade grooves by the screws, and the tool disc is internally provided with a first cooling pipeline, characterized in that the tool head structure further comprises a pressing plate, the pressing plate is locked on the outer side of the tool disc by the screws and tightly presses the blades in the radial direction, the pressing plate is provided with a second cooling pipeline which is communicated with the first cooling pipeline, and the outlet of the second cooling pipeline is arranged towards the cutting edge of the blade.

2. The tool bit structure for jetting a coolant using a pressure plate according to claim 1, wherein The first cooling pipeline comprises a central cooling hole and a plurality of cooling hole branches, and two ends of the cooling hole branches are respectively communicated with the central cooling hole and the second cooling pipeline.

3. The tool tip structure of claim 2, wherein the pressure plate is formed of a material having a thermal conductivity of 100 W / mK or more. The diameter of the central cooling hole is greater than the diameter of the cooling hole branches.

4. The tool tip structure for jetting a coolant using a pressure plate according to claim 2, wherein The second cooling pipeline comprises a flow guide channel, a cooling flow channel and a nozzle, and the cooling hole branches, the flow guide channel, the cooling flow channel and the nozzle are communicated in sequence.

5. The tool tip structure for jetting a coolant using a pressure plate according to claim 4, wherein The cooling flow channel is annular.

6. The tool tip structure for jetting a coolant using a pressure plate according to claim 4, wherein The nozzle is a wedge-shaped structure with a wide front and a narrow back.

7. The tool tip structure for jetting a coolant using a pressure plate according to claim 4, wherein The second cooling pipeline further comprises a flow storage cavity with a narrow front and a wide back, and the flow storage cavity is located between the nozzle and the cooling flow channel.

8. The tool tip structure for jetting a coolant using a pressure plate according to claim 4, wherein The cooling flow channel and the nozzle are arranged on the bottom surface of the pressing plate.

9. The tool tip structure for jetting a coolant using a pressure plate according to claim 6, wherein The nozzle is a flat wedge-shaped structure.

10. The tool bit structure of claim 1, wherein the pressure plate is formed of a material having a thermal conductivity of 100 W / mK or more. A gasket is arranged directly below the pressing plate.

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