TWI759967B - Heat dissipating device of light path tool holder and light path tool holder - Google Patents

Abstract

A heat dissipating device of a light path tool holder is described. The heat dissipating device of the light path tool holder includes at least one heat conduction pad and various heat conduction rods. The heat conduction pad is configured to be adhered to an outer surface of a main body of the light path tool holder. The heat conduction rods pass through the heat conduction pad and the main body in sequence, in which a thermal conductivity coefficient of the heat conduction rods is greater than a thermal conductivity coefficient of the main body.

Description

Cooling device for optical path knife handle and optical path knife handle

The present disclosure relates to a processing tool, and in particular, to a heat sink for an optical path knife handle and an optical path knife handle.

Lasers have the ability to rapidly heat up the surface of a material without affecting the substrate. Therefore, laser-assisted machining technology is a common precision machining technology, which is mainly used for difficult-to-machine materials in the mold industry, aerospace industry, and medical industry, such as ceramics, superalloys and other materials that are difficult to directly cut.

However, although laser heating can first soften the material to improve milling efficiency, it is easy to cause the temperature inside the tool holder to be too high, resulting in damage to the tool holder. Therefore, how to effectively reduce the internal temperature of the knife handle is one of the key technologies.

Therefore, an object of the present disclosure is to provide a heat sink for an optical path knife handle and an optical path knife handle, which can reduce the volume of the side surface of the optical path knife handle and install a heat-conducting rod and a heat-conducting sheet of high thermal conductivity metal, so that the accumulated heat inside the optical path knife handle can be dissipated. Efficient export and can increase the heat dissipation surface area. By this, it is possible to prevent The lens inside the optical path knife is broken, which can increase the life of the optical path knife, and also solve the problem that the conventional optical path knife cannot operate for a long time, thereby improving the working efficiency of processing.

Another object of the present disclosure is to provide a heat dissipation device for an optical path knife handle and an optical path knife handle, which can adjust the position of the heat-conducting rod according to the temperature distribution of the optical path knife handle, so that the internal temperature distribution of the optical path knife handle can be uniform.

Another object of the present disclosure is to provide a heat dissipation device for an optical path knife handle and an optical path knife handle. The heat-conducting rod can be solidly designed, so that the dynamic balance of the optical path knife handle will not be affected when the heat source is uneven. Therefore, the industrial application Sex is extensive.

Another object of the present disclosure is to provide a heat dissipation device for an optical path knife handle and an optical path knife handle. Then a horseshoe-shaped vortex is formed, which can increase the heat transfer of the surface of the optical path knife handle.

According to the above objective of the present disclosure, a heat dissipation device for an optical path knife handle is provided. The heat dissipation device of the optical path knife handle includes at least one heat-conducting sheet and several heat-conducting rods. The heat-conducting sheet is configured to be attached to the outer side surface of the main body of the optical path knife handle. The heat-conducting rods pass through the heat-conducting sheet and the main body in sequence, wherein the thermal conductivity of these heat-conducting rods is greater than that of the main body.

According to an embodiment of the present disclosure, the number of the above-mentioned at least one thermally conductive sheet is 2, and the body includes two cut sides opposite to each other, and the thermally conductive sheets are respectively attached to the cut sides.

According to an embodiment of the present disclosure, the above-mentioned thermally conductive rods are arranged staggered from each other.

According to an embodiment of the present disclosure, each of the thermally conductive rods includes a solid rod body.

According to an embodiment of the present disclosure, each of the heat conducting rods is a screw, and the head of the screw is cylindrical.

According to an embodiment of the present disclosure, the above-mentioned thermally conductive rods are arranged in several rows with a first spacing, and the ratio of the second spacing between adjacent two of the thermally conductive rods in each row to the radial dimension of each thermally conductive rod is less than or equal to 5.

According to an embodiment of the present disclosure, the ratio of the above-mentioned first distance to the radial dimension of each thermally conductive rod is less than or equal to 5.

According to an embodiment of the present disclosure, the material of the above-mentioned thermally conductive sheet and thermally conductive rod is copper.

According to the above purpose of the present disclosure, another optical path knife handle is proposed. The optical path knife handle includes a main body, at least one heat-conducting sheet, and several heat-conducting rods. The body has a channel for the light beam to pass through. The thermal conductive sheet is attached to the outer side surface of the main body. Each heat-conducting rod includes a head and a locking portion. The head is protruded on the outer side surface of the heat-conducting sheet. The locking portion is engaged with the head, and is sequentially passed through the heat conducting sheet and the main body.

According to an embodiment of the present disclosure, the body includes a plurality of cut sides, and the number of the at least one thermally conductive sheet is the same as the number of the cut sides, and the thermal sheets are respectively attached to the cut sides.

According to an embodiment of the present disclosure, in each thermally conductive sheet, the thermally conductive rods are arranged staggered from each other.

According to an embodiment of the present disclosure, each of the above-mentioned rod-shaped portions includes a solid stick body.

According to an embodiment of the present disclosure, each rod-shaped portion includes a screw, and each head portion is cylindrical.

According to an embodiment of the present disclosure, the material of the above-mentioned thermally conductive sheet and thermally conductive rod is copper.

According to an embodiment of the present disclosure, the above-mentioned thermally conductive rods are arranged in several rows with a first spacing, and the ratio of the first spacing to the radial dimension of each thermally conductive rod is less than or equal to 5. In addition, the ratio of the second distance between adjacent ones of the heat-conducting rods in each row to the radial dimension of each heat-conducting rod is less than or equal to 5.

100: Light Path Knife Handle

110: Subject

110a: outer side

110h: screw hole

112: Channel

114: Cut Side

116: Cut Side

120: cooling device

122: Thermal Rod

122a: head

122b: Rod

122h: Locking slot

124: thermal conductive sheet

124a: Joint surface

124b: outer side

124h: screw hole

126: Thermal conductive sheet

126a: Joint surface

126b: outer side

126h: screw hole

d1: radial dimension

d2: radial dimension

L1: first column

L2: second column

L3: third column

L4: Fourth column

L5: Fifth column

L6: sixth column

L7: seventh column

p1: first pitch

p2: second pitch

RD: direction

In order to make the above-mentioned and other objects, features, advantages and embodiments of the present disclosure more clearly understood, the accompanying drawings are described as follows: [FIG. 1] shows the upper part of an optical path knife handle according to an embodiment of the present disclosure. and [ FIG. 2 ] is a schematic side view of an optical path knife handle according to an embodiment of the present disclosure.

In view of the low heat conduction rate of the optical path knife handle itself, the heat generated during processing is accumulated in the internal heat source of the optical path knife handle. Therefore, the present disclosure proposes a heat dissipation device for the optical path knife handle and an optical path knife handle. This disclosure will The heat-conducting rod with good thermal conductivity is inserted into the body of the optical knife handle, and the heat-conducting sheet is attached to the outer surface of the main body of the optical path knife handle, so that the heat inside the optical path knife can be dissipated and the heat dissipation surface area can be increased. Therefore, the application of the present disclosure can prevent the inner lens of the optical path knife from breaking, thereby prolonging the life of the optical path knife, and also solving the problem that the conventional optical path knife cannot operate for a long time, thereby improving the processing efficiency.

Please refer to FIG. 1 and FIG. 2 , which are a schematic top view and a schematic side view of an optical path knife handle according to an embodiment of the present disclosure, respectively. The optical path tool holder 100 of this embodiment can be used in a milling spindle device, and is connected to the bottom of the milling spindle. When the milling spindle device performs the machining operation, the optical path tool holder 100 can rotate with the axis of the milling spindle as the rotation axis, for example, in the direction RD. The heat dissipation device 120 of the optical path knife handle 100 in this embodiment mainly dissipates the accumulated heat inside the optical path knife handle 100 through solid heat conduction. Therefore, compared with the cooling method that uses fluid to circulate through the knife handle, this embodiment does not need to consider the rotation of the knife handle. The design of the fluid pipeline can greatly reduce the complexity of the knife handle design and effectively reduce the production cost of the knife handle.

The optical path knife handle 100 may mainly include a main body 110 and a heat dissipation device 120 . Body 110 may include channel 112 . The channel 112 allows the machining beam from the milling spindle to pass through for milling the workpiece. Spectroscopic elements, reflection elements, and/or lens elements may be arranged in the channel 112 according to optical requirements. The processing beam can be, for example, a laser. The material of the main body 110 can be metal, such as steel.

In some examples, the body 110 may be fabricated by trimming one or more of the lateral volumes of a hollow cylindrical tube. Thus, body 110 may include one or more a cut side. In some illustrative examples, as shown in FIG. 1 , body 110 includes two trimmed sides 114 and 116 . The cut sides 114 and 116 may be located on opposite sides of the main body 110 , respectively. For example, the side surface of the main body of a general cylindrical knife handle can be cut off to form two symmetrical planes, thereby forming an elliptical-like structure composed of two horseshoe-like shapes, as shown in FIG. 1 . Since the heat conduction rate of the main body 110 itself is low, it is easy for heat to accumulate in the internal heat source of the optical path knife handle 100 . Therefore, these examples reduce the excess volume on the side of the main body 110 without destroying the dynamic balance and affecting the structural strength of the optical path knife handle 100 . , so that the distance from the heat source to the surface of the main body 110 can be shortened, so that the heat energy inside the optical path knife handle 100 can be conducted out of the surface of the main body 110 more quickly. Therefore, the heat dissipation efficiency can be improved.

In some examples, the heat dissipation device 120 of the optical path knife handle 100 mainly includes at least one thermally conductive sheet and several thermally conductive rods 122 . In the exemplary example shown in FIG. 1 , the heat dissipation device 120 of the optical path knife handle 100 includes two thermally conductive sheets 124 and 126 , wherein the thermally conductive sheets 124 and 126 are disposed opposite to each other. The number and arrangement position of the thermally conductive sheets of the heat dissipation device of the present disclosure can be adjusted according to the structure, weight distribution, and heat source distribution of each optical path knife handle. That is, the optical path knife handle may include a single thermally conductive sheet, or may include more than two thermally conductive sheets.

The thermally conductive sheets 124 and 126 are configured to be attached to the outer side surface 110 a of the main body 110 . In some demonstrative examples, the thermally conductive sheets 124 and 126 may be attached to the cut sides 114 and 116 of the main body 110 , respectively. In such an example, the number of thermally conductive sheets 124 and 126 of the heat sink 120 is the same as the number of the cut sides 114 and 116 of the main body 110 . Outside the main body 110 The side 110a may be flat on the cut sides 114 and 116, and the thermally conductive sheets 124 and 126 may have flat joint surfaces 124a and 126a, respectively. In this way, the conductive sheets 124 and 126 can be more compliantly bonded to the cut sides 114 and 116 , which is beneficial to heat conduction. The thermal conductivity of the conductive sheets 124 and 126 is greater than that of the main body 110 to provide better heat dissipation. The material of the conductive sheets 124 and 126 can be copper, for example.

Please continue to refer to FIG. 1 , the thermally conductive rod 122 passes through the thermally conductive sheet 124 or 126 and the main body 110 in sequence. The thermal conductivity of the thermally conductive rod 122 is greater than that of the main body 110 , so as to improve the heat dissipation effect. The material of the thermally conductive rod 122 may be copper, for example. In some examples, each thermally conductive rod 122 includes a head portion 122a and a stem portion 122b, wherein the stem portion 122b and the head portion 122a engage with each other. The radial dimension d1 of the head portion 122a is larger than the radial dimension d2 of the rod-shaped portion 122b. The rod-shaped portion 122b penetrates through the thermally conductive sheet 124 or 126 and the main body 110 in sequence. At this time, the head portion 122 a is protruded from the outer side surface 124 b of the thermally conductive sheet 124 or the outer side surface 126 b of the thermally conductive sheet 126 .

In some demonstrative examples, each thermally conductive rod 122 is a screw. As shown in FIG. 2 , the head 122a of the heat-conducting rod 122 can be, for example, a cylindrical shape. The cylindrical head 122a facilitates the generation of vortices when the fluid flows therethrough. In addition, a locking groove 122h may be recessed on the top of the head 122a. The shape of the locking groove 122h can be a polygonal groove such as a straight line, a cross shape, or a hexagonal shape. As shown in FIG. 1 , the rod-shaped portion 122b may include a screw, and the outer surface of the rod-shaped portion 122b has threads. The thermally conductive sheets 124 and 126 may be respectively provided with a plurality of screw holes 124h and 126h, wherein the screw holes 124h and 126h penetrate through the thermally conductive sheets 124 respectively. with 126. The main body 110 is also provided with a plurality of screw holes 110h, wherein the positions and sizes of the screw holes 110h can correspond to the screw holes 124h and 126h, respectively. The screw hole 110h may or may not penetrate the side wall of the main body 110 . The user can insert a locking tool, such as a screwdriver or a wrench, into the locking groove 122h, and then use the locking tool to screw the rod-shaped portion 122b of the heat-conducting rod 122 to the screw hole 124h of the heat-conducting sheet 124 or the heat-conducting sheet 124. in the screw hole 126h of the sheet 126 and the screw hole 110h of the main body 110 .

Since the rod-shaped portion 122b has threads, the contact area between the heat-conducting rod 122 and the heat-conducting sheet 124 or 126 and the main body 110 can be increased, and the heat-conducting speed of the heat-conducting rod 122 can be accelerated. The rod-shaped portion 122b at one end of the heat-conducting rod 122 is close to the heat source, so that the heat inside the optical knife handle 100 can be more efficiently conducted to the heat-conducting sheets 124 and 126 on the outer side surface 110a of the main body 110 . The head 122a of the other end of the heat-conducting rod 122 is clamped on the outer side 124b of the heat-conducting sheet 124 or the outer side 126b of the heat-conducting sheet 126, so that the heat energy exported by the heat-conducting rod 122 can be dispersed to the entire heat-conducting sheet 124 and 126, Therefore, the heat dissipation area can be greatly increased, thereby improving the heat dissipation efficiency. In an exemplary example, the heat-conducting rod 122 may penetrate through the sidewall of the main body 110 to be closer to the internal heat source of the optical path handle 100 to further enhance the heat-conducting effect.

The arrangement of the thermally conductive rods 122 can be adjusted according to requirements, such as temperature distribution and weight distribution. For example, the position of the heat-conducting rod 122 can be adjusted according to the temperature distribution of different optical path knife handles 100 , so that the inside of the optical path knife handle 100 presents a state of relatively uniform temperature. The thermally conductive rods 122 may be arranged in several rows on each of the thermally conductive sheets 124 and 126, such as the first row L1, the second row L2, The third column L3, the fourth column L4, the fifth column L5, the sixth column L6, and the seventh column L7 are shown in FIG. 2 . In some examples, the first to seventh columns L1 to L7 may be arranged at a first pitch p1. In addition, in each of the first to seventh columns L1 to L7, the thermally conductive rods 122 may be arranged at a second pitch p2. The first pitch p1 and the second pitch p2 may be the same or different. In some exemplary examples, in each row, the second distance p2 between two adjacent thermally conductive rods 122 and the radial dimension of each thermally conductive rod 122 , that is, the radial dimension d1 of the head 122a of the thermally conductive rods 122 , are related to The ratio is less than or equal to 5. In addition, the ratio of the first pitch p1 to the radial dimension d1 of the head portion 122a of each thermally conductive rod 122 may also be, for example, less than or equal to 5.

On each of the thermally conductive sheets 124 and 126, the thermally conductive rods 122 of each row can be arranged in a non-displacement manner, eg, the thermally conductive rods 122 of each row are aligned with each other. In some demonstrative examples, as shown in FIG. 2 , the thermally conductive rods 122 of each column are arranged in an offset manner from each other. In the example in which the heat-conducting rods 122 are arranged in a staggered manner, when the fluid generated by the rotation of the optical path knife handle 100, such as air flow, flows through the surface of the optical path knife handle 100, it will encounter these protruding outer sides 124b of the heat-conducting sheet 124 and the heat-conducting sheet 126. The head 122a on the outer side surface 126b forms an eddy current, so that the surface heat transfer property of the optical path knife handle 100 can be increased. The vortex formed by the airflow over the head 122a may be, for example, a horseshoe shape. When the thermally conductive rods 122 are not arranged in a staggered manner, eddy currents may not be formed after the airflow passes through each head portion 122a.

The rod-shaped portion 122b of the heat conducting rod 122 can be a hollow rod body or a solid rod body. In some exemplary examples, the rod-shaped portion 122b of the heat-conducting rod 122 is a solid rod body, so the cross-sectional area of the rod-shaped portion 122b is larger, and the heat conduction effect is improved. better. In addition, in the example in which the rod-shaped portion 122b of the heat-conducting rod 122 adopts a solid design, the heat-conducting rod 122 will not affect the dynamic balance of the optical path knife handle 100 even when the heat source is uneven, so it can be applied to a wide range of industries.

As can be seen from the above-mentioned embodiments, one of the advantages of the present disclosure is that by reducing the side volume of the optical path knife handle and installing the heat-conducting rod and heat-conducting sheet of high thermal conductivity metal, the accumulated heat inside the optical path knife handle can be effectively exported, and the Can increase the heat dissipation surface area. Therefore, the lens inside the optical path knife handle can be prevented from breaking, the life of the optical path knife handle can be increased, and the problem that the conventional optical path knife handle cannot be operated for a long time can be solved, thereby improving the working efficiency of processing.

As can be seen from the above-mentioned embodiments, another advantage of the present disclosure is that the heat dissipation device of the optical path knife handle of the present disclosure can adjust the position of the heat-conducting rod according to the temperature distribution of the optical path knife handle, so that the internal temperature distribution of the optical path knife handle can be uniform.

It can be seen from the above-mentioned embodiments that another advantage of the present disclosure is that the heat-conducting rod of the heat dissipation device of the optical path knife handle of the present disclosure can adopt a solid design, so that the dynamic balance of the optical path knife handle will not be affected when the heat source is uneven. , so it has a wide range of industrial applications.

It can be seen from the above-mentioned embodiments that another advantage of the present disclosure is that the heat-conducting rods of the heat dissipation device of the optical path knife handle of the present disclosure can be arranged in dislocation, so that when the fluid generated by the rotation of the optical path knife handle flows through the surface of the optical path knife handle, it can be These protruding heat-conducting rods form horseshoe-shaped eddy currents, which can increase the heat transfer on the surface of the optical path knife handle.

Although the present disclosure has been disclosed above with examples, it is not intended to be limited The final disclosure, anyone with ordinary knowledge in this technical field, can make various changes and modifications without departing from the spirit and scope of this disclosure. Therefore, the protection scope of this disclosure should be defined by the scope of the appended patent application. whichever shall prevail.

100: Light Path Knife Handle

110: Subject

110a: outer side

110h: screw hole

112: Channel

114: Cut Side

116: Cut Side

120: cooling device

122: Thermal Rod

122a: head

122b: Rod

124: thermal conductive sheet

124a: Joint surface

124b: outer side

124h: screw hole

126: Thermal conductive sheet

126a: Joint surface

126b: outer side

126h: screw hole

d1: radial dimension

d2: radial dimension

RD: direction

Claims (15)

A heat dissipation device for an optical path knife handle, comprising: at least one thermally conductive sheet, configured to be attached to an outer surface of a main body of an optical path handle; and A plurality of heat-conducting rods pass through the at least one heat-conducting sheet and the main body in sequence, wherein the thermal conductivity of the heat-conducting rods is greater than that of the main body. The heat dissipation device for an optical path knife handle as claimed in claim 1, wherein the number of the at least one thermally conductive sheet is 2, and the body includes two cut sides opposite to each other, and the thermally conductive sheets are respectively attached to the cut sides. The heat dissipation device of the optical path knife handle according to claim 1, wherein the heat conducting rods are arranged in a staggered arrangement. The heat dissipation device of the optical path knife handle according to claim 1, wherein each of the heat conducting rods comprises a solid rod body. The heat dissipation device of the optical path knife handle according to claim 1, wherein each of the heat conducting rods is a screw, and a head of the screw is cylindrical. The heat-dissipating device for an optical path knife handle as claimed in claim 1, wherein the heat-conducting rods are arranged in a plurality of rows with a first interval, and one of the heat-conducting rods in each row is a first between two adjacent ones of the heat-conducting rods. A ratio of the two spacings to a radial dimension of each of the thermally conductive rods is less than or equal to 5. The heat dissipation device for an optical path knife handle as claimed in claim 6, wherein a ratio of the first distance to the radial dimension of each of the heat conducting rods is less than or equal to 5. The heat dissipation device for an optical path knife handle according to claim 1, wherein the material of the at least one thermally conductive sheet and the thermally conductive rods is copper. An optical path knife handle, comprising: a main body with a channel for a light beam to pass through; at least one thermally conductive sheet attached to an outer surface of the main body; and a plurality of thermally conductive rods, wherein each of the thermally conductive rods comprises: a head protruding from an outer side surface of the at least one thermally conductive sheet; and A rod-shaped portion is engaged with the head portion, and is sequentially passed through the at least one thermally conductive sheet and the main body. The optical path knife handle of claim 9, wherein the body includes a plurality of cutting sides, the number of the at least one thermally conductive sheet is the same as the number of the cutting sides, and the thermally conductive sheets are respectively attached to the cutting sides. The optical path knife handle according to claim 10, wherein in each of the thermally conductive sheets, the thermally conductive rods are arranged in a staggered arrangement with each other. The optical path knife handle of claim 9, wherein each of the rod-shaped portions comprises a solid rod body. The optical path knife handle of claim 9, wherein each of the rod-shaped portions comprises a screw, and each of the head portions is cylindrical. The optical path knife handle according to claim 9, wherein the material of the at least one thermally conductive sheet and the thermally conductive rods is copper. The light path knife handle as claimed in claim 9, wherein The thermally conductive rods are arranged in a plurality of rows with a first spacing, and a ratio of the first spacing to a radial dimension of each of the thermally conductive rods is less than or equal to 5; and A ratio of a second distance between adjacent ones of the thermally conductive rods in each of the rows to the radial dimension of each of the thermally conductive rods is less than or equal to 5.

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