A tungsten steel milling cutter with heat-resistant structure

Abstract

The present invention discloses a tungsten steel milling cutter with a heat-resistant structure, comprising a shank constituting a milling cutter body and an integrated cutter head, and an opening is also provided on the shank, the opening is connected to a heat-resistant mechanism, wherein the heat-resistant mechanism is provided in the milling cutter, and the heat resistance of the milling cutter is improved by airflow entering the heat-resistant mechanism from the opening. The tungsten steel milling cutter with a heat-resistant structure re-improves the internal structure of the milling cutter, and uses an airflow channel to effectively cool the entire milling cutter while minimizing the impact on the overall structural strength of the milling cutter, significantly improving the heat resistance, making full use of the limited working space of the milling cutter, generating an effect of active airflow supplementation through the high-speed rotation of the milling cutter itself, and can assist in cleaning the grooves of the milling cutter in combination with vibration and other methods, effectively increasing the comprehensive service life of the milling cutter.

Description

Technical Field

[0001] The invention relates to the technical field of milling cutters, in particular to a machine tool milling cutter with a high-temperature resistant cavity structure, and specifically to a tungsten steel milling cutter with a heat-resistant structure. Background Art

[0002] The milling cutter is a basic functional component in a grinding machine tool. It is driven by a motor to rotate at high speed and utilizes the high hardness of the milling cutter itself to grind metal parts or other functional parts. For example, the prior art discloses a milling cutter head and a milling cutter with the announcement number CN111136315B. The milling cutter head includes a plurality of arcuate blades connected in sequence head to tail, and the arcuate blade located on the head side of two adjacent arcuate blades is inscribed in the arcuate blade located on the tail side. The multiple arcuate blades of the milling cutter head can not only process multiple arcuate rotating bodies through one rotation of the milling cutter head, which is beneficial to improve the production efficiency of the milling cutter head, but also form a smooth transition between adjacent arcuate blades, which can ensure the production accuracy of the milling cutter head. Therefore, the milling cutter head can meet the requirements of maintaining high-efficiency production under high-precision requirements;

[0003] Or a milling cutter with a publication number of CN106170357B, comprising a body, the body having a central axis and an outer side surface, the body being rotatable on the central axis, the outer side surface comprising a pair of opposite front and back sides and a peripheral envelope surface, and the outer side surface being equipped with a plurality of replaceable cutting blades. According to the invention, the body comprises an internal hollow space having an internal limiting surface, a plurality of bores opening in the internal limiting surface and also opening in the outer side surface, each cutting blade being mounted on the outer end of an ejector, the ejector being able to move linearly in the respective bores and having an inner end accessible from the hollow space, and the ejector interacting with a compressible force generator, the force generator being used to pull the ejector into the bore at all times. By mounting the cutting blade on an ejector where the ejector can be accessed simultaneously from a common hollow space, the cutting blade can be quickly and easily replaced, and the cutting blade can also be indexed;

[0004] Most of the milling cutters in the prior art are improved in terms of installation and cutting efficiency. However, since the milling cutter itself is made of metal, especially tungsten steel milling cutters used to process other metals, although the volume of this type of milling cutter is not fixed, the material is often kept in a high temperature state for a long time due to the harsh working environment. The method of simply spraying cutting fluid on the working surface for cooling will also cause the temperature of the shank and other areas to be high, resulting in the need to further improve the overall heat resistance of the milling cutter. Summary of the invention

[0005] The purpose of the present invention is to provide a tungsten steel milling cutter with a heat-resistant structure to solve the problem that most of the milling cutters in the prior art proposed in the above background technology are improvements in installation and cutting efficiency. However, since the milling cutter itself is made of metal, especially tungsten steel milling cutters used for processing other metals, although the volume of this type of milling cutter is not fixed, the material is often in a high temperature state for a long time due to the harsh working environment. The method of simply spraying cutting fluid on the working surface for cooling will also cause the temperature of the shank and other areas to be high, resulting in the problem that the overall heat resistance of the milling cutter needs to be further improved.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a tungsten steel milling cutter with a heat-resistant structure, comprising a shank constituting a milling cutter body and an integrated cutter head, and an opening is also provided on the shank, wherein the opening is connected to a heat-resistant mechanism, wherein the heat-resistant mechanism is provided in the milling cutter, and the heat resistance of the milling cutter is improved by airflow entering the heat-resistant mechanism from the opening.

[0007] As a further feature, the heat-resistant structure includes a channel opened inside the knife handle and the knife head, wherein the channel is integrally formed or drilled inside the knife handle and the knife head, and the top of the channel is connected to the opening.

[0008] As a further feature, the bottom end of the channel is also connected to an outlet, and the outlet is provided in the cutter head.

[0009] As a further feature, a drainage mechanism is also provided on the knife handle, wherein the drainage mechanism is used to improve the automatic air intake efficiency at the opening when the knife handle and the knife head rotate.

[0010] As a further feature, the drainage mechanism includes a drainage block, wherein the windward surface of the drainage block is a slope structure, and the opening is also located on the windward surface and connected to the channel, wherein the drainage block is post-installed or integrally formed at the exposed section of the handle after installation.

[0011] As a further feature, the drainage mechanism comprises a groove arranged in the handle, the concave windward surface of the groove is also the location of the opening, and the groove is integrally formed or ground at the exposed section of the handle after installation.

[0012] As a further feature, the drainage mechanism further comprises a fixing ring sleeved on the outside of the knife handle and a drainage rod inserted and fixed on the fixing ring, and the drainage rod is provided with a first input port and a second input port as input ends for the drainage rod to guide the airflow to enter, and the output end of the drainage rod is respectively connected to the openings at corresponding positions and the air pipe;

[0013] Furthermore, the tail end of the air pipe is connected to a cleaning mechanism for generating airflow and cleaning the surface of the milling cutter when the milling cutter has a low rotation speed, and the top end of the air pipe is connected to a position between the two input ports, wherein a diverter mechanism is provided in the guide rod, and the diverter mechanism is used to automatically adjust the airflow to flow out from different output ends according to the rotation speed.

[0014] Furthermore, the diversion mechanism includes a valve plate, and the valve plate is installed inside the drainage rod for horizontal sliding through a spring. When the milling cutter rotates at high speed, the valve plate is blocked on the inner side of the second input port, and when the milling cutter rotates at low speed, the valve plate is blocked between the first input port and the output end of the drainage rod.

[0015] As a further feature, the cleaning mechanism comprises a ring body arranged below the fixing ring, the lower end surface of the ring body is provided with a nozzle connected to its internal space, and the top end of the ring body is provided with an air pipe connected to the interior of the ring body.

[0016] As a further feature, a magnetic block is fixed to the outer surface of the valve plate via a protruding rod, and the magnetic block and the opposite surface of the magnetic block which is also fixed to the inner top wall of the drainage rod are arranged to repel each other.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the tungsten steel milling cutter with a heat-resistant structure improves the internal structure of the milling cutter, and uses the air flow channel to effectively cool the entire milling cutter while minimizing the impact on the overall structural strength of the milling cutter, significantly improving the heat resistance, making full use of the limited working space of the milling cutter, and generating the effect of active airflow supplement through the high-speed rotation of the milling cutter itself, and can be combined with vibration and other methods to assist in cleaning the grooves of the milling cutter, effectively increasing the comprehensive service life of the milling cutter, as shown in the following content:

[0018] 1. The structural design of the openings and channels can, on the one hand, utilize the airflow entering the channel through the openings to effectively cool the working area and the handle area of ​​the milling cutter by airflow. On the other hand, it can cooperate with the outlet structure design at the bottom of the channel to enable the airflow to form a flow path, thereby improving the circulation and cooling effect. At the same time, it can also cooperate with the outlets in the grooves or other areas of the cutter head to effectively clean up the workpiece debris that may remain;

[0019] Furthermore, the structural design of the guide block or the groove can actively introduce high-speed airflow through the high-speed rotation of the milling cutter, thereby improving the air cooling effect and the use range of the milling cutter, without the need to use other air supply equipment, and is more energy-saving and environmentally friendly;

[0020] 2. The use of guide rods and multiple sets of input ports can utilize the different rotation speeds of the milling cutter in different working processes to automatically guide the airflow to different areas, so as to utilize this feature to realize automatic air cooling of the milling cutter and airflow cleaning of the surface of the milling cutter respectively. At the same time, the same solution can be used for extended implementation to realize vibration treatment during the shutdown process of the milling cutter, avoiding affecting the normal operation of the milling cutter and performing auxiliary vibration cleaning of the residual debris. The actual use effect is excellent. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0022] Figure 2 This is a schematic diagram of the channel distribution structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

[0024] Figure 4 This is a schematic diagram of the overall structure of Embodiment 3 of the present invention;

[0025] Figure 5 This is a schematic diagram of the drainage rod distribution structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the cross-sectional structure of the drainage rod of the present invention;

[0027] Figure 7 It is a schematic diagram of the longitudinal cross-section structure of the drainage rod and the fixing ring of the present invention;

[0028] Figure 8 It is a schematic diagram of the nozzle distribution structure of the present invention.

[0029] In the figure: 1. tool handle; 2. tool head; 3. opening; 4. channel; 5. outlet; 6. drainage block; 7. groove; 8. fixing ring; 9. drainage rod; 10. first input port; 11. second input port; 12. valve plate; 13. spring; 14. air pipe; 15. ring body; 16. nozzle; 17. magnetic block. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 8 , the present invention provides the following technical solutions:

[0032] Embodiment 1: In this embodiment, in order to solve the problem existing in the prior art, that is, the problem of low cooling efficiency of the milling cutter itself, the following solution is disclosed. Figure 1-2 The present invention comprises a tool handle 1 constituting a milling cutter body and an integrated cutter head 2, and an opening 3 is also provided on the tool handle 1, and the opening 3 is connected to a heat-resistant mechanism, wherein the heat-resistant mechanism is provided in the milling cutter, and the heat resistance of the milling cutter is improved by airflow entering the heat-resistant mechanism from the opening 3, and the heat-resistant mechanism comprises a channel 4 opened in the tool handle 1 and the cutter head 2, wherein the channel 4 is integrally formed or drilled in the tool handle 1 and the cutter head 2, and the top end of the channel 4 is connected to the opening 3, and the bottom end of the channel 4 is also connected to an outlet 5, and the outlet 5 is opened in the cutter head 2, and the milling cutter itself is at a high When the milling cutter is in operation such as high-speed rotation, the air flow enters the channel 4 through the opening 3, so that the air flow can flow in the channel 4 without directly contacting the working surface of the cutter head 2, thereby achieving air cooling and improving the heat resistance of the milling cutter. At the same time, an outlet 5 structure is connected to the bottom end of the channel 4. One of the functions of the outlet 5 is to improve the air circulation effect and thus increase the cooling rate. The second function is to open the outlet 5 in the waste discharge groove of the milling cutter head 2 or other areas prone to material jamming, and use the air flow to automatically clear the blocked position to avoid the influence of metal residue on the accuracy of subsequent workpiece processing.

[0033] The following content is a further expansion based on the above solution. The reason for the expansion is that the milling cutter is greatly affected by the working environment during high-speed rotation, and the external air supply mechanism may not be able to meet the requirements of space limitations. Therefore, the following content is disclosed. Figure 1-Figure 3 As shown in the content, a drainage mechanism is also provided on the tool handle 1, wherein the drainage mechanism is used to improve the automatic air intake efficiency at the opening 3 when the tool handle 1 and the cutter head 2 rotate, and the drainage mechanism includes a drainage block 6, wherein the windward surface of the drainage block 6 is a slope structure, and the opening 3 is also on the windward surface and connected with the channel 4, wherein the drainage block 6 is post-installed or integrally formed at the exposed section position of the tool handle 1 after installation. There are two forms of this scheme. The first is a drainage block 6 that is integrally formed or post-installed on the tool handle 1, and an opening 3 is opened on the windward surface of the drainage block 6, so that during the high-speed rotation of the milling cutter, the airflow is more fully guided to enter the opening 3 in the direction of rotation.

[0034] Embodiment 2: The drainage mechanism includes a groove 7 provided in the tool handle 1, and the concave windward surface of the groove 7 is also the location of the opening 3. At the same time, the groove 7 is integrally formed or ground at the exposed section of the tool handle 1 after installation. The second form is to integrally form or ground the groove 7 structure on the tool handle 1. In this way, during the rotation of the milling cutter, the airflow is guided in the direction of rotation, so that the airflow can enter the channel 4 from the opening 3 more abundantly and be discharged from the outlet 5, thereby achieving better heat resistance and energy-saving and environmental protection effects.

[0035] Embodiment 3: In this embodiment, another solution is disclosed. This solution is suitable for milling cutter equipment with relatively ample working space. The main reason is that a circle of drainage rod structure is set on the outside of the milling cutter. The rotation of the milling cutter itself is also used to inject airflow to improve the cooling efficiency and heat resistance of the milling cutter. The rod structure also has two other special and very practical functions. One of the functions is to automatically adjust the direction of the airflow according to the change of the rotation speed. For details, please refer to Figure 4-Figure 8 The drainage mechanism also includes a fixing ring 8 sleeved on the outside of the tool handle 1 and a drainage rod 9 inserted and fixed on the fixing ring 8, and the drainage rod 9 is provided with a first input port 10 and a second input port 11 as the input end for the drainage rod 9 to guide the airflow to enter, and the output end of the drainage rod 9 is respectively connected with the opening 3 and the air pipe 14 at the corresponding position, wherein the tail end of the air pipe 14 is connected to a cleaning mechanism for generating airflow and cleaning the surface of the milling cutter when the milling cutter rotates at a low speed, and the top end of the air pipe 14 is connected to the position between the two input ports, wherein a diversion mechanism is provided in the drainage rod 9, and the diversion mechanism is used to automatically adjust the airflow to flow out from different output ends according to the rotation speed, and the diversion mechanism includes a valve plate 12, and the valve plate 12 is horizontally slidably installed inside the drainage rod 9 through a spring 13, and the valve plate 12 is blocked on the inner side of the second input port 11 when the milling cutter rotates at a high speed, and the valve plate 12 is blocked on the inner side of the second input port 11 when the milling cutter rotates at a low speed 12 is blocked between the first input port 10 and the output end of the guide rod 9. The cleaning mechanism includes a ring body 15 arranged below the fixed ring 8. The lower end face of the ring body 15 is provided with a nozzle 16 connected to its internal space, and the top of the ring body 15 is provided with an air pipe 14 connected to the inside of the ring body 15. When the milling cutter rotates at a high speed for a certain period of time, it means that the milling cutter is cutting and its body generates a large amount of heat. Therefore, in this case, the valve plate 12 stretches the spring 13 to move away from the milling cutter and block the second input port 11 and the air pipe 14. Therefore, the airflow blown into the guide rod 9 through the first input port 10 will only enter the channel 4 to complete the cooling work. After the milling cutter leaves the workpiece surface, the rotation speed is reduced and the valve plate 12 is moved back. The airflow will only enter the air pipe 14 and be ejected from the nozzle 16 to achieve airflow cleaning of the milling cutter surface. The second function is as shown below:

[0036] A magnetic block 17 is fixed to the outer surface of the valve plate 12 through an extended rod. The magnetic block 17 and the magnetic block 17 also fixed on the top wall inside the drainage rod 9 are set to repel each other. In the process of the milling cutter gradually stopping, the valve plate 12 moves in the direction close to the milling cutter. In this case, the magnetic block 17 fixed on its outer surface will move synchronously, and when it is on the opposite side of the magnetic block 17 in the drainage rod 9, it will cause the magnetic block on the valve plate 12 to swing and produce a vibration effect due to magnetic repulsion (it can also be an attractive setting), and effectively clean the groove area of ​​the milling cutter at the same time with the airflow.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tungsten steel milling cutter with a heat-resistant structure, comprising a shank (1) constituting a milling cutter body and an integrated cutter head (2), and an opening (3) is also provided on the shank (1), characterized in that: The opening (3) is connected to a heat-resistant structure, wherein the heat-resistant structure is arranged in the milling cutter, and the heat resistance of the milling cutter is improved by airflow entering the heat-resistant structure from the opening (3); The knife handle (1) is also provided with a drainage mechanism, wherein the drainage mechanism is used to improve the automatic air intake efficiency at the opening (3) when the knife handle (1) and the knife head (2) rotate; The drainage mechanism further comprises a fixing ring (8) sleeved on the outside of the tool handle (1) and a drainage rod (9) inserted and fixed on the fixing ring (8), and the drainage rod (9) is provided with a first input port (10) and a second input port (11) as input ends for the drainage rod (9) to guide the airflow to enter, and the output end of the drainage rod (9) is respectively connected to the opening (3) and the air pipe (14) at the corresponding position, wherein the tail end of the air pipe (14) is connected to a cleaning mechanism for generating airflow and cleaning the surface of the milling cutter at a low speed of the milling cutter, and the top end of the air pipe (14) is connected to the position between the two input ports, wherein a diversion mechanism is provided in the drainage rod (9), and the diversion mechanism is used to automatically adjust the airflow to flow out from different output ends according to the speed; The flow dividing mechanism comprises a valve plate (12), and the valve plate (12) is horizontally slidably mounted inside the flow guiding rod (9) via a spring (13); when the milling cutter rotates at a high speed, the valve plate (12) blocks the inside of the second input port (11); and when the milling cutter rotates at a low speed, the valve plate (12) blocks between the first input port (10) and the output end of the flow guiding rod (9).

2. The tungsten steel milling cutter with a heat-resistant structure according to claim 1, characterized in that: The heat-resistant structure comprises a channel (4) opened inside the knife handle (1) and the knife head (2), wherein the channel (4) is integrally formed or drilled inside the knife handle (1) and the knife head (2), and the top end of the channel (4) is connected to the opening (3).

3. The tungsten steel milling cutter with heat-resistant structure according to claim 2, characterized in that: The bottom end of the channel (4) is also connected to the outlet (5), and the outlet (5) is opened in the cutter head (2).

4. The tungsten steel milling cutter with a heat-resistant structure according to claim 1, characterized in that: The drainage mechanism comprises a drainage block (6), wherein the windward surface of the drainage block (6) is a slope structure, and the opening (3) is also located on the windward surface and is connected to the channel (4), wherein the drainage block (6) is post-installed or integrally formed at the exposed section of the handle (1) after installation.

5. The tungsten steel milling cutter with heat-resistant structure according to claim 1, characterized in that: The drainage mechanism comprises a groove (7) arranged in the knife handle (1), the concave windward surface of the groove (7) is also the location of the opening (3), and the groove (7) is integrally formed or ground at the exposed section of the knife handle (1) after installation.

6. The tungsten steel milling cutter with heat-resistant structure according to claim 5, characterized in that: The cleaning mechanism comprises a ring body (15) arranged below the fixing ring (8), a nozzle (16) communicating with the inner space of the ring body (15) being arranged on the lower end surface thereof, and an air pipe (14) communicating with the inner space of the ring body (15) being arranged on the top end thereof.

7. A tungsten steel milling cutter with a heat-resistant structure according to claim 5 or 6, characterized in that: A magnetic block (17) is fixed to the outer surface of the valve plate (12) via a protruding rod, and the opposite surface of the magnetic block (17) and the magnetic block (17) which is also fixed to the inner top wall of the drainage rod (9) are arranged to repel each other.

Images