MILLING CUTTING DEVICE

Abstract

A milling cutting device, comprising an annular body 101, having a circular opening 201 provided at center of the body 101 for coupling with an actuated spindle, plurality of teeth 102 integrated on the body 101 having a detachably attached cutting insert 103 for removing material from a workpiece, each of the teeth 102 having a front face 104 with the attached cutting insert 103, a back face 105, and a groove 106 between back face 105 and front face 104 of successive teeth 102 for enabling movement of removed material from the workpiece away from the teeth 102, an elongated hollow region 202 provided on each of the teeth 102 for mechanically fastening and thermally engaging with a heat dissipation assembly 107, a thermally conductive hollow elongated stem configured within assembly 107 having a heat transfer medium for heat absorption generated in the cutting insert 103.

Specification

Description:FIELD OF THE INVENTION

[0001] The present invention relates to a milling cutting device that is capable of effectively performing machining of a workpiece by removal of material from the workpiece during the milling operation and extending the operational life of a cutting means by enabling thermal regulation of the cutting means.

BACKGROUND OF THE INVENTION

[0002] Milling is a machining process that is used in various industries to shape the workpiece. Milling process involves removing material from a workpiece using a rotating cutting tool, known as a milling cutter, which has multiple cutting edges. The workpiece is typically secured to a worktable or fixture, while the milling cutter rotates at high speeds and traverses across the surface of the workpiece, cutting away material to achieve the desired shape, size, and surface finish.

[0003] Milling operations are performed using various types of milling machines, ranging from simple manual machines to advanced computer numerical control (CNC) machines. These machines can execute a wide range of milling processes, including face milling, end milling, slot milling, and profile milling, among others. In conventional milling machines, the cutting inserts or teeth are attached directly to the body of the cutter without specialized provisions for heat management. As a result, during machining operations, heat generated at the cutting zone can accumulate, leading to issues such as tool wear, thermal deformation, and reduced machining accuracy. Without effective heat dissipation mechanisms, traditional milling devices may struggle to maintain consistent performance and require frequent tool changes or interruptions to the machining process. Thus, there is a need to develop a device that addresses the limitations of traditional milling machines by integrating heat dissipation mechanisms that provides a solution to the challenges posed by heat accumulation in traditional milling devices, enabling smoother and more reliable machining processes across a wide range of applications and materials.

[0004] CN114269502A discloses a milling cutter (M) comprises a nose portion and a tail portion. The front-end portion comprises a disc shaped cutter body, the disc shaped cutter body having a front side, a rear side, a centre axis (X) and a plurality of insert seats. A primary retention member extends from the rear side. The trailing end portion comprises an auxiliary retaining member, the auxiliary retaining member engaging the primary retaining member when the leading and trailing end portions are mounted to each other. The disc-shaped cutter body comprises a central cylindrical bore, which central cylindrical bore extends coaxially with the central axis and comprises an inner cylindrical surface. An outer cylindrical surface is provided on a front side portion of the auxiliary holding member. The inner cylindrical surface abuts the outer cylindrical surface in an abutment region between the front and rear sides to centre the front and rear end portions. Although, CN'502 discloses a milling cutter with certain features like a nose portion, tail portion, disc-shaped cutter body with insert seats, and retention members, it lacks efficient heat management during milling operations and does not address the issue of heat build-up at the cutting zone.

[0005] CN220515532U discloses a tungsten steel milling cutter easy to dissipate heat, which belongs to the technical field of milling cutters and aims at solving the problem that the service life of the milling cutter is low due to the fact that the milling cutter is difficult to adjust when in operation due to the fact that the temperature is too high; according to the utility model, the arc clamping plates can be mutually close to each other to clamp and fix the milling cutter main body by rotating the screw rod, so that the heat dissipation mechanism can be installed on the milling cutter main body, and the heat dissipation mechanism can be detached when the milling cutter main body fails or is damaged, so that the follow-up reuse is facilitated, the heat dissipation capability of the tungsten steel milling cutter is improved, and the use cost of the heat dissipation mechanism is reduced. Though, CN'532 mentions the installation of a heat dissipation mechanism on the milling cutter main body, however the milling cutter is not effective enough to dissipate the generated heat faster.

[0006] Conventionally, many devices have been developed for machining the workpiece in milling machines, however the traditional milling cutter lack advanced heat dissipation mechanisms, leading to issues such as reduced tool lifespan and diminished machining accuracy due to heat build-up during operations.

[0007] In order to overcome the aforementioned drawbacks, there exists a need in the art to develop a device that needs to address the limitations of traditional methods or devices by incorporating advanced features related to heat dissipation mechanisms which prioritize efficient heat management during operations, ensuring optimal performance and longevity of components, especially in high-temperature environments.

OBJECTS OF THE INVENTION

[0008] The principal object of the present invention is to overcome the disadvantages of the prior art.

[0009] An object of the present invention is to develop a device that effectively performs machining of a workpiece by removal of material from the workpiece during the milling operation and extending the operational life of a cutting means by enabling thermal regulation of the cutting means.

[0010] Another object of the present invention is to develop a device that minimizes heat build-up during the milling operation thus preventing wearing of cutting means and maintains cutting performance

[0011] Yet another object of the present invention is to develop a device that is reliable, user-friendly and easy-to-operate.

[0012] The foregoing and other objects, features, and advantages of the present invention will become readily apparent upon further review of the following detailed description of the preferred embodiment as illustrated in the accompanying drawings.

SUMMARY OF THE INVENTION

[0013] The present invention relates to a milling cutting device that efficiently and precisely removes material from a workpiece during a milling operation along with enhancing tool longevity and minimizing heat buildup, thus improving cutting performance.

[0014] According to an embodiment of the present invention, a milling cutting device comprises of an annular body, having a circular opening is provided at a geometric center of the body for a coupling with an actuated spindle, the body having a plurality of teeth integrated radially on a peripheral edge of the body, each of the teeth having a detachably attached cutting insert for a removal of material from a work piece, each of the teeth having a front face with the attached cutting insert, a back face, and a groove between the back face and a front face of successive teeth for enabling a movement of the removed material from the work piece away from the teeth, an elongated hollow region provided on each of the teeth, a first end of the hollow region opening at an upper surface of the body and a lower end of the hollow region extending towards the front face of the tooth, for mechanically fastening and thermally engaging with a heat dissipation assembly, wherein the heat dissipation assembly is in proximity with the cutting insert attached to the front face of the tooth, for dissipating a heat generated in the cutting insert during a milling process, wherein each of the heat dissipation assembly comprising a thermally conductive hollow elongated stem, having a heat transfer medium within a volume of the stem, the stem detachably inserted within the hollow region in the tooth, to make the thermal contact with the cutting insert attached with the tooth, for an absorption of the heat generated at the cutting insert.

[0015] According to another embodiment of the present invention, the proposed device further comprises of a plurality of radially attached rectangular lamellar fins attached on an upper end of the stem, the upper end extending outwards from the body, for providing an increased surface area for a dissipation of the heat absorbed by the stem, an elongated tubular wick is disposed within the stem for imparting a capillary effect to the heat transfer medium, the hollow region with the respective stem of each the heat dissipation assembly is parallel to a rotational axis of the body, wherein each the hollow region is positioned in proximity to the front face of the respective tooth having the hollow region, wherein each the hollow region has a circular cross-section, wherein each the stem has a circular cross-section, wherein the heat transfer medium is selected from Helium, Nitrogen, Ammonia, Acetone, Methanol, Flutec PP2, Ethanol, Water, Toluene, Mercury, Sodium, Lithium, and Silver, wherein the stem is fastened with the respective hollow region by means of clearance fitting and each the stem and the fins are made of copper.

[0016] While the invention has been described and shown with particular reference to the preferred embodiment, it will be apparent that variations might be possible that would fall within the scope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] These and other features, aspects, and advantages of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawings where:
Figure 1 illustrates an isometric view of a milling cutting device;
Figure 2 illustrates a magnified view of an annular body of the proposed device; and
Figure 3 illustrates a magnified view of a heat dissipation assembly of the proposed device.

DETAILED DESCRIPTION OF THE INVENTION

[0018] The following description includes the preferred best mode of one embodiment of the present invention. It will be clear from this description of the invention that the invention is not limited to these illustrated embodiments but that the invention also includes a variety of modifications and embodiments thereto. Therefore, the present description should be seen as illustrative and not limiting. While the invention is susceptible to various modifications and alternative constructions, it should be understood, that there is no intention to limit the invention to the specific form disclosed, but, on the contrary, the invention is to cover all modifications, alternative constructions, and equivalents falling within the spirit and scope of the invention as defined in the claims.

[0019] In any embodiment described herein, the open-ended terms "comprising," "comprises," and the like (which are synonymous with "including," "having" and "characterized by") may be replaced by the respective partially closed phrases "consisting essentially of," consists essentially of," and the like or the respective closed phrases "consisting of," "consists of, the like.

[0020] As used herein, the singular forms "a," "an," and "the" designate both the singular and the plural, unless expressly stated to designate the singular only.

[0021] The present invention relates to a milling cutting device that is capable of performing machining of a workpiece by removal of material from the workpiece during the milling operation and extending the operational life of a cutting means by enabling thermal regulation of the cutting means.

[0022] Referring to Figure 1, and 2, an isometric view of a milling cutting device and an enlarged view of an annular body along with a heat dissipation assembly of the proposed device are illustrated, respectively comprising an annular body 101, having a circular opening 201 provided at a geometric center of the body 101 for a coupling with an actuated spindle, plurality of teeth 102 integrated radially on a peripheral edge of the body 101, each of the teeth 102 having a front face 104 with the attached cutting insert 103, a back face 105, and a groove 106 between the back and a front face 104, an elongated hollow region 202 provided on each of the teeth 102 for mechanically fastening and thermally engaging with a heat dissipation assembly 107, a thermally conductive hollow elongated stem configured within the assembly 107, a plurality of radially attached rectangular lamellar fins 108 attached on an upper end of the stem, an elongated tubular wick 109 disposed within the stem and a tool holder 110 mated with the circular opening 201.

[0023] The proposed device herein comprises of an annular body 101 with a circular opening 201 provided at a geometric center of the body 101 for coupling with an actuated spindle of a milling machine. The annular body 101 is preferably made from a durable and rigid material such as steel or aluminum. The construction of the body 101 ensures stability and rigidity during the milling operation, allowing for precise and efficient material removal from a workpiece. The opening 201 serves as the point of attachment for the device to the actuated spindle of the milling machine.

[0024] The spindle provides the rotational motion necessary for the annular body 101 to engage with the workpiece. Further, the circular opening 201 is mated with a tool holder 110 for enabling a coupling of the body 101 with the milling machine. By mating the circular opening 201 of the annular body 101 with the tool holder 110 on the milling machine, the device is securely attached to the machine's spindle. This coupling ensures that the cutting teeth 102 and inserts 103 are properly aligned and positioned for effective material removal during milling operations.

[0025] The body 101 is configured with plurality of teeth 102 integrated radially on a peripheral edge of the body 101, wherein each tooth is equipped with a detachable cutting insert 103, securely attached to the front face 104 of the tooth for the removal of material from the workpiece. A groove 106 is configured between successive teeth 102 of the annular body 101. The groove 106 facilitates the ejection of chips and debris generated during the milling process, preventing the chips and debris from interfering with the cutting action or causing damage to the tool or workpiece.

[0026] An elongated hollow region 202 is provided on each of the teeth 102, with one end opening at the upper surface of the body 101 and the other end extending towards the front face 104 of the tooth. The hollow region 202 serves as a means for mechanically fastening and thermally engaging with a heat dissipation assembly 107, wherein the heat dissipation assembly 107 is in proximity with the cutting insert 103 attached to the front face 104 of the tooth, for dissipating a heat generated in the cutting insert 103 during a milling process.

[0027] Each of the heat dissipation assembly 107 comprises a thermally conductive hollow elongated stem inserted into the hollow region 202 of the tooth, wherein each the stem has a circular cross-section. The inherently provide efficient heat transfer characteristics. The uniformity of the circular cross-section of the stem allows for smooth flow and distribution of heat within the stem, maximizing the effectiveness of the heat transfer medium in absorbing and dissipating heat away from the cutting insert 103. The hollow region 202 with the respective stem of each the heat dissipation assembly 107 is parallel to a rotational axis of the body 101. Each the hollow region 202 is positioned in proximity to the front face 104 of the respective tooth having the hollow region 202 and each of the hollow region 202 has a circular cross-section. Each of the stem is fastened with the respective hollow region 202 by means of clearance fitting.

[0028] The elongated stem is preferably made of a highly thermally conductive material such as copper to facilitate rapid heat transfer. A heat transfer medium is contained inside the hollow elongated stem. The heat transfer medium serves to absorb the heat generated at the cutting insert 103. The heat transfer mediums include substances selected from Helium, Nitrogen, Ammonia, Acetone, Methanol, Flutec PP2, Ethanol, Water, Toluene, Mercury, Sodium, Lithium, and Silver. As heat is absorbed by the medium, the medium undergoes phase changes and conducts the heat away from the cutting area. An elongated tubular wick 109 is disposed within the stem for imparting a capillary effect to the heat transfer medium. The tubular wick 109 is where the heat transfer medium is present, wherein the heat transfer medium is drawn into the wick 109 through capillary action. This ensures that the heat transfer medium remains in close contact with the walls of the stem, maximizing the surface area available for heat exchange with the surrounding environment. As a result, heat generated at the cutting insert 103 is efficiently absorbed by the heat transfer medium and transported away from the cutting area.

[0029] Plurality of radially attached rectangular lamellar fins 108 are positioned on the upper end of the hollow elongated stem, extending outward from the body 101, wherein each of the fins 108 are made of copper. The lamellar fins 108 are designed to increase the surface area available for dissipating the heat absorbed by the stem and its heat transfer medium. By increasing the surface area, the lamellar fins 108 enhances the efficiency of heat dissipation, allowing for more effective cooling of the cutting insert 103 and surrounding components during the milling operations, (as illustrated in figure 3).

[0030] The present invention works best in the following manner, where the annular body 101 with a circular opening 201 as disclosed in the invention is provided at a geometric center of the body 101 for coupling with an actuated spindle. The body 101 is configured with plurality of teeth 102 integrated radially on a peripheral edge of the body 101, wherein each tooth is equipped with a detachable cutting insert 103, securely attached to the front face 104 of the tooth for the removal of material from the workpiece and the groove 106 is configured between successive teeth 102 of the annular body 101. The elongated hollow region 202 is provided on each of the teeth 102, with one end opening at the upper surface of the body 101 and the other end extending towards the front face 104 of the tooth.

[0031] In continuation, the hollow region 202 serves as a means for mechanically fastening and thermally engaging with a heat dissipation assembly 107, wherein the heat dissipation assembly 107 is in proximity with the cutting insert 103 attached to the front face 104 of the tooth, for dissipating a heat generated in the cutting insert 103 during a milling process. Plurality of radially attached rectangular lamellar fins 108 are positioned on the upper end of the hollow elongated stem, extending outward from the body 101. The lamellar fins 108 are designed to increase the surface area available for dissipating the heat absorbed by the stem and its heat transfer medium. By increasing the surface area, the lamellar fins 108 enhances the efficiency of heat dissipation, allowing for more effective cooling of the cutting insert 103 and surrounding components during the milling operations.

[0032] Although the field of the invention has been described herein with limited reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternate embodiments of the invention, will become apparent to persons skilled in the art upon reference to the description of the invention. , Claims:1) A milling cutting device, comprising:

i) an annular body 101, having a circular opening 201 is provided at a geometric center of said body 101 for a coupling with an actuated spindle, said body 101 having a plurality of teeth 102 integrated radially on a peripheral edge of said body 101, each of said teeth 102 having a detachably attached cutting insert 103 for a removal of material from a work piece;

ii) each of said teeth 102 having a front face 104 with said attached cutting insert 103, a back face 105, and a groove 106 between said back face 105 and a front face 104 of successive teeth 102 for enabling a movement of said removed material from said work piece away from said teeth 102;

iii) an elongated hollow region 202 provided on each of said teeth 102, a first end of said hollow region 202 opening at an upper surface of said body 101 and a lower end of said hollow region 202 extending towards said front face 104 of said tooth, for mechanically fastening and thermally engaging with a heat dissipation assembly 107 configured in proximity with said cutting insert 103 attached to said front face 104 of said tooth, for dissipating a heat generated in said cutting insert 103 during a milling process;

iv) each of said heat dissipation assembly 107, comprising:

a. a thermally conductive hollow elongated stem, having a heat transfer medium within a volume of said stem, said stem detachably inserted within said hollow region 202 in said tooth, to make said thermal contact with said cutting insert 103 attached with said tooth, for an absorption of said heat generated at said cutting insert 103; and

b. a plurality of radially attached rectangular lamellar fins 108 attached on an upper end of said stem, said upper end extending outwards from said body 101, for providing an increased surface area for a dissipation of said heat absorbed by said stem.

2) The device as claimed in claim 1, wherein an elongated tubular wick 109 is disposed within said stem for imparting a capillary effect to said heat transfer medium.

3) The device as claimed in claim 1, wherein said hollow region 202 with said respective stem of each said heat dissipation assembly 107 is parallel to a rotational axis of said body 101.

4) The device as claimed in claim 1, wherein each said hollow region 202 is positioned in proximity to said front face 104 of said respective tooth having said hollow region 202.

5) The device as claimed in claim 1, wherein each said hollow region 202 has a circular cross-section.

6) The device as claimed in claim 1, wherein each said stem has a circular cross-section, to allow for smooth flow and distribution of heat within the stem, maximizing the effectiveness of the heat transfer medium in absorbing and dissipating heat away from the cutting insert 103.

7) The device as claimed in claim 1, wherein said heat transfer medium is selected from Helium, Nitrogen, Ammonia, Acetone, Methanol, Flutec PP2, Ethanol, Water, Toluene, Mercury, Sodium, Lithium, and Silver.

8) The device as claimed in claim 1, wherein said stem is fastened with said respective hollow region 202 by means of clearance fitting.

9) The device as claimed in claim 1, wherein each said stem and said fins 108 are made of copper.

10) The device as claimed in claim 1, wherein said circular opening 201 is mated with a tool holder 110 for enabling a coupling of said body 101 with a milling machine.

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