A milling head cooling assembly of a numerical control gantry milling machine

Abstract

The utility model provides a kind of numerical control planer milling machine milling head cooling assembly, solve the cooling assembly of most planer milling machines mainly for tool and workpiece, not provide effective cooling to horizontal milling head, can lead to the transmission system of horizontal milling head overheats due to heat accumulation, to accelerate gear wear, affect transmission accuracy, reduce processing quality, and shorten the service life of equipment problem.The cooling pump of the utility model is extracted from the cooling liquid tank and transported to the cooling pipe, and the shell is cooled by the connecting pipe into the heat dissipation pipeline in the shell, and then the transmission system in the shell is cooled, to achieve the purpose of cooling the horizontal milling head, prevent the transmission system of horizontal milling head overheats due to heat accumulation, reduce gear wear, avoid affecting transmission accuracy and processing quality, improve equipment service life.

Description

Technical Field

[0001] This utility model relates to the field of CNC gantry milling machine technology, and in particular to a milling head cooling assembly for a CNC gantry milling machine. Background Technology

[0002] A gantry milling machine, also known as a gantry milling machine, is a milling machine with a gantry frame and a horizontal long bed. Multiple milling cutters can be used simultaneously to machine surfaces on a gantry milling machine, resulting in high machining accuracy and production efficiency. It is suitable for machining large workpieces' planes and inclined surfaces in batch and mass production. CNC gantry milling machines can also machine spatial curved surfaces and some special-shaped parts.

[0003] A gantry milling machine consists of a gantry frame, a bed, a worktable, and an electrical control system. The gantry frame comprises columns and a top beam, with a crossbeam in between. The crossbeam can move up and down along the guide rails of the two columns. One or two milling heads with vertical spindles are mounted on the crossbeam, which can move laterally along the crossbeam guide rails. Each of the two columns can also be equipped with a milling head with a horizontal spindle, which can move up and down along the column guide rails. These milling heads can machine several surfaces simultaneously. Each milling head has its own motor, speed change mechanism, operating mechanism, and spindle assembly.

[0004] The milling heads of gantry milling machines are mainly divided into vertical milling heads and horizontal milling heads according to their angle. The transmission system inside the horizontal milling head can convert vertical rotation into horizontal rotation. During operation, the friction and load between the gears in the transmission system will generate additional heat. Most gantry milling machines' cooling components are mainly designed for the cutting tool and workpiece, and do not provide effective cooling for the horizontal milling head. This will cause the transmission system of the horizontal milling head to overheat due to heat accumulation, thereby accelerating gear wear, affecting transmission accuracy, reducing machining quality, and shortening the machine's lifespan. Utility Model Content

[0005] To address the problem that most gantry milling machines in the background art have cooling components that primarily target the cutting tool and workpiece, failing to provide effective cooling for the horizontal milling head, which leads to overheating of the horizontal milling head's transmission system due to heat accumulation, thereby accelerating gear wear, affecting transmission accuracy, reducing machining quality, and shortening equipment life, this utility model proposes a milling head cooling component for CNC gantry milling machines.

[0006] The technical solution of this utility model is: a cooling assembly for a milling head of a CNC gantry milling machine, including a drive device, an angle adjustment device, and a horizontal milling head. The angle adjustment device is located at the bottom of the drive device, and a rotatable horizontal milling head is located at the bottom of the angle adjustment device. The horizontal milling head includes a housing extending in the left-right direction and a transmission system disposed within the housing. The output shaft of the drive device passes through the angle adjustment device and is connected to the transmission system. The transmission system is used to convert the vertical rotation of the drive device into horizontal rotation. The transmission system is rotatably disposed within the housing, and a tool holder is connected to the transmission system. The left end of the tool holder extends out of the housing and holds a tool.

[0007] The horizontal milling head is equipped with a cooling assembly, which is used to cool the tool and the workpiece simultaneously. Specifically, the cooling assembly includes a coolant tank, a coolant pump fixedly connected to and connected to the coolant tank, and two cooling pipes fixedly connected to and connected to the output end of the coolant pump. The cooling pipes are fixedly mounted on the drive unit. Two heat dissipation pipes are opened inside the side wall of the housing. The right end of the heat dissipation pipes is connected to the cooling pipes. Two liquid outlet pipes are provided on the left end of the housing. The liquid outlet pipes are connected to the left end of the heat dissipation pipes. The left end of the liquid outlet pipes faces the left end of the tool, and a nozzle is fixedly provided on the left end of the liquid outlet pipes.

[0008] Preferably, the side wall of the housing has multiple cooling channels that extend along its extension direction and are open from front to back, and the multiple cooling channels are arranged in an arc-shaped interval.

[0009] The right end of the housing has multiple first connection holes with right openings, and the left end of the housing has multiple second connection holes with left openings. The multiple first connection holes and second connection holes are used to connect multiple cooling channels in series to form two serpentine heat dissipation pipe-like cooling channels arranged along the circumference of the housing.

[0010] Preferably, a first sealing plate is fixedly provided at the right end of the housing, and two connecting pipes are fixedly provided on the first sealing plate. The connecting pipes are connected to the cooling pipes, and the bottom end of the connecting pipes passes through the first sealing plate and is connected to the right end of the heat dissipation pipe. A second sealing plate is fixedly provided at the left end of the housing, and two liquid outlet pipes are provided on the second sealing plate. The right end of the liquid outlet pipes passes through the second sealing plate and is connected to the left end of the heat dissipation pipe.

[0011] Preferably, the liquid outlet pipe is a universal bamboo joint pipe.

[0012] Preferably, the connecting pipe is a rigid metal pipe, and the connecting pipe is fixedly connected to the cooling pipe and connected by a helical spring pipe.

[0013] Preferably, the angle adjustment device includes a housing, a collar is fixedly sleeved on the bottom of the outer surface of the housing, a slider that can slide along the circumference of the collar is slidably mounted on the collar, the top end of the connecting tube is fixedly mounted on the slider, and the top end of the connecting tube passes through the slider and is fixedly connected and communicates with the helical spring tube, the helical spring tube is located between the slider and the bottom end of the cooling pipe, and the helical spring tube located between the slider and the bottom end of the cooling pipe is wound around the housing.

[0014] Advantages of this invention: The cooling pump of this invention draws coolant from the coolant tank and delivers it to the cooling pipe, and then enters the heat dissipation pipe inside the housing through the connecting pipe to dissipate heat from the housing, thereby dissipating heat from the transmission system inside the housing. This achieves the purpose of dissipating heat from the horizontal milling head, preventing the transmission system of the horizontal milling head from overheating due to heat accumulation, reducing gear wear, avoiding affecting transmission accuracy and machining quality, and improving the service life of the equipment.

[0015] The transmission system of this utility model horizontal milling head generates less heat under the continuous flow of cooling water through the heat dissipation pipes. This allows the coolant to further dissipate heat to the tool and workpiece through the outlet pipe and nozzle after passing through the heat dissipation pipes, thereby improving the heat dissipation effect. At the same time, using a single heat dissipation device can dissipate heat to the horizontal milling head, tool, and workpiece simultaneously, which simplifies the cooling components, reduces costs, and improves heat dissipation efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This utility model Figure 1 Another perspective structural diagram;

[0019] Figure 3 This is an exploded view of the casing of this utility model;

[0020] Figure 4 This is a right view of the casing of this utility model;

[0021] Figure 5 This is a left view of the casing of this utility model.

[0022] In the diagram: 1. Drive unit; 2. Angle adjustment device; 21. Housing; 3. Horizontal milling head; 31. Housing; 32. Tool holder; 33. Tool; 4. Cooling assembly; 41. Cooling pipe; 42. Heat dissipation pipe; 43. Liquid outlet pipe; 44. Nozzle; 45. Cooling channel; 46. First connecting hole; 47. Second connecting hole; 48. First sealing plate; 49. Second sealing plate; 5. Connecting pipe; 6. Helical spring tube; 7. Collar; 71. Slider. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: A cooling assembly for the milling head of a CNC gantry milling machine, such as... Figure 1-5 As shown, the device includes a drive unit 1, an angle adjustment device 2, and a horizontal milling head 3. The angle adjustment device 2 is located at the bottom of the drive unit 1, and the horizontal milling head 3 is located at the bottom of the angle adjustment device 2. The angle adjustment device 2 is used to adjust the angle of the horizontal milling head 3 in the horizontal plane. For those skilled in the art, the angle adjustment device 2 is known technology and will not be described in detail. The horizontal milling head 3 includes a housing 31 extending in the left-right direction and a transmission system disposed within the housing 31. The output shaft of the drive unit 1 passes through the angle adjustment device 2 and is connected to the transmission system. The transmission system is used to convert the vertical rotation of the drive unit 1 into horizontal rotation. For those skilled in the art, the transmission system is known technology and will not be described in detail. The transmission system is rotatably disposed within the housing 31. The tool holder 32 is connected to the transmission system. The left end of the tool holder 32 extends out of the housing 31 and holds a tool 33.

[0025] The horizontal milling head 3 is equipped with a cooling assembly 4, which cools the cutting tool 33 and the workpiece simultaneously. Specifically, the cooling assembly 4 includes a coolant tank, a cooling pump fixedly connected to and connected to the coolant tank, and two cooling pipes 41 fixedly connected to and connected to the output end of the cooling pump. The cooling pipes 41 are fixedly mounted on the drive unit 1. The cooling pump draws coolant from the coolant tank and delivers it to the cooling pipes 41. The coolant tank and cooling pump are not shown in the figure. For those skilled in the art, the coolant tank and cooling pump are well-known technologies, so they will not be described in detail. Two heat dissipation pipes 42 are opened in the side wall of the housing 31. The heat dissipation pipe 42 is used to carry away the heat transferred from the transmission system to the housing 31 when the coolant passes through, so as to achieve the purpose of heat dissipation for the horizontal milling head 3. The right end of the heat dissipation pipe 42 is connected to the cooling pipe 41. The left end of the housing 31 is provided with two liquid outlet pipes 43, which are connected to the left end of the heat dissipation pipe 42. The left end of the liquid outlet pipe 43 faces the left end of the tool 33, and a nozzle 44 is fixedly provided on the left end of the liquid outlet pipe 43. The liquid outlet pipe 43 is a universal bamboo joint pipe. The universal bamboo joint pipe is highly flexible and can adapt to the complex layout of the equipment, and the position of the nozzle 44 can be easily adjusted. For those skilled in the art, the universal bamboo joint pipe is a well-known technology, so it will not be described in detail.

[0026] The cooling pump draws coolant from the coolant tank and delivers it to the cooling pipe 41. The coolant then enters the heat dissipation pipe 42 inside the housing 31 via the connecting pipe 5 to dissipate heat from the housing 31. This process dissipates heat from the transmission system inside the housing 31, achieving the purpose of cooling the horizontal milling head 3. This prevents the transmission system of the horizontal milling head 3 from overheating due to heat accumulation, reduces gear wear, avoids affecting transmission accuracy and machining quality, and improves equipment lifespan. Simultaneously, the heat generated by the transmission system of the horizontal milling head 3 under the continuous flow of cooling water through the heat dissipation pipe 42 is relatively small. This allows the coolant to further dissipate heat from the tool 33 and workpiece through the outlet pipe 43 and nozzle 44 after passing through the heat dissipation pipe 42, thereby improving the heat dissipation effect.

[0027] The heat dissipation pipe 42 is a serpentine heat dissipation pipe, which can improve the heat dissipation effect on the housing 31. Specifically, multiple cooling channels 45 are provided in the side wall of the housing 31, which are arranged along their extension direction and are open from front to back. The multiple cooling channels 45 are arranged in an arc-shaped interval, and the connection points of the multiple cooling channels 45 with the housing 31 and the angle adjustment device 2 are staggered to avoid the cooling channels 45 being cut off. At the same time, the cooling channels 45 with the open structure on both sides are convenient for drilling. Multiple right-opening first connection holes 46 are provided at the right end of the housing 31. The right-opening first connection holes 46 are convenient for drilling equipment to directly access the housing 31. The right end is processed, and except for the two cooling channels 45 located in the center of the front and rear, the right ends of every two cooling channels 45 are connected through the first connecting hole 46; the left end of the housing 31 is provided with multiple left-opening second connecting holes 47, which facilitate drilling equipment to process directly from the left end of the housing 31, except for the two cooling channels 45 located at the end, and the left ends of every two cooling channels 45 are connected through the second connecting hole 47; the multiple first connecting holes 46 and second connecting holes 47 are used to connect the multiple cooling channels 45 in series to form two serpentine heat dissipation pipe-shaped cooling channels 45 arranged along the circumference of the housing 31.

[0028] A first sealing plate 48 is fixedly provided at the right end of the housing 31. The first sealing plate 48 is used to seal the right end of the cooling channel 45 and the first connecting hole 46. Two connecting pipes 5 are fixedly provided on the first sealing plate 48. The connecting pipes 5 are connected to the cooling pipe 41. The bottom end of the connecting pipe 5 passes through the first sealing plate 48 and is connected to the right end of the heat dissipation pipe 42. A second sealing plate 49 is fixedly provided at the left end of the housing 31. The second sealing plate 49 is used to seal the left end of the cooling channel 45 and the second connecting hole 47, so that the heat dissipation pipe 42 forms a sealed pipe structure. Two liquid outlet pipes 43 are provided on the second sealing plate 49. The right end of the liquid outlet pipes 43 passes through the second sealing plate 49 and is connected to the left end of the heat dissipation pipe 42.

[0029] The connecting pipe 5 is a rigid metal pipe. The connecting pipe 5 is fixedly connected to the cooling pipe 41 and connected to a spiral spring pipe 6. The spiral spring pipe 6 has a certain degree of expansion and contraction performance, which can effectively absorb and compensate for the length changes of the cooling pipe 41 and the connecting pipe 5 during rotation when the angle adjustment device 2 adjusts the horizontal angle of the horizontal milling head 3, preventing damage caused by stretching or bending of the cooling pipe 41 and the connecting pipe 5, thereby maintaining the stability of the cooling assembly.

[0030] The angle adjustment device 2 includes a housing 21. A collar 7 is fixedly sleeved on the bottom of the outer surface of the housing 21. A slider 71 that can slide around the collar 7 is slidably mounted on the collar 7. The top end of the connecting pipe 5 is fixedly mounted on the slider 71, and the top end of the connecting pipe 5 passes through the slider 71 and is fixedly connected and communicates with the helical spring tube 6. The helical spring tube 6 is located between the slider 71 and the bottom end of the cooling pipe 41, and is wound around the housing 21. When the angle adjustment device 2 drives the horizontal milling head 3 to rotate, it drives the connecting pipe 5 and the slider 71 to rotate along the collar 7, so that the helical spring tube 6 is wound around the housing 21, avoiding irregular movement of the helical spring tube 6 and affecting the cutting operation of the milling machine.

[0031] Working principle: The cooling pump draws coolant from the coolant tank and delivers it to the cooling pipe 41. It then enters the heat dissipation pipe 42 inside the housing 31 through the connecting pipe 5 to dissipate heat from the housing 31, thereby dissipating heat from the transmission system inside the housing 31 and the horizontal milling head 3. At the same time, after passing through the heat dissipation pipe 42, the coolant is sprayed onto the surface of the tool 33 and the workpiece through the outlet pipe 43 and the nozzle 44 to dissipate heat from the tool 33 and the workpiece, thus dissipating heat from the horizontal milling head 3, the tool 33, and the workpiece simultaneously.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cooling assembly for the milling head of a CNC gantry milling machine, characterized in that: The device includes a drive unit (1), an angle adjustment device (2), and a horizontal milling head (3). The drive unit (1) has an angle adjustment device (2) at its bottom, and the angle adjustment device (2) has a rotatable horizontal milling head (3) at its bottom. The horizontal milling head (3) includes a housing (31) extending in the left-right direction and a transmission system disposed in the housing (31). The output shaft of the drive unit (1) passes through the angle adjustment device (2) and is connected to the transmission system. The transmission system is used to convert the vertical rotation of the drive unit (1) into horizontal rotation. The transmission system is rotatably disposed in the housing (31). The tool holder (32) is connected to the transmission system. The left end of the tool holder (32) extends out of the housing (31) and clamps the fixed tool (33). The horizontal milling head (3) is provided with a cooling assembly (4). The cooling assembly (4) is used to cool the horizontal milling head (3) while cooling the tool (33) and the workpiece. Specifically, the cooling assembly (4) includes a coolant tank. A cooling pump is fixedly connected to and connected to the coolant tank. The output end of the cooling pump is fixedly connected to and connected to two cooling pipes (41). The cooling pipes (41) are fixedly installed on the drive device (1). Two heat dissipation pipes (42) are opened in the side wall of the housing (31). The right end of the heat dissipation pipes (42) is connected to the cooling pipes (41). Two liquid outlet pipes (43) are provided on the left end of the housing (31). The liquid outlet pipes (43) are connected to the left end of the heat dissipation pipes (42). The left end of the liquid outlet pipes (43) faces the left end of the tool (33). A nozzle (44) is fixedly installed on the left end of the liquid outlet pipes (43).

2. The CNC gantry milling machine head cooling assembly according to claim 1, characterized in that: The side wall of the housing (31) is provided with multiple cooling channels (45) that are arranged along its extension direction and are open from front to back. The multiple cooling channels (45) are arranged in an arc-shaped interval. The right end of the housing (31) is provided with a plurality of first connection holes (46) with right opening structure, and the left end of the housing (31) is provided with a plurality of second connection holes (47) with left opening structure. The plurality of first connection holes (46) and second connection holes (47) are used to connect the plurality of cooling channels (45) in series to form two serpentine heat dissipation pipe-shaped cooling channels (45) arranged along the circumference of the housing (31).

3. A milling head cooling assembly for a CNC gantry milling machine according to claim 2, characterized in that: A first sealing plate (48) is fixedly provided on the right end of the housing (31). Two connecting pipes (5) are fixedly provided on the first sealing plate (48). The connecting pipes (5) are connected to the cooling pipe (41). The bottom end of the connecting pipe (5) passes through the first sealing plate (48) and is connected to the right end of the heat dissipation pipe (42). A second sealing plate (49) is fixedly provided on the left end of the housing (31). Two liquid outlet pipes (43) are provided on the second sealing plate (49). The right end of the liquid outlet pipe (43) passes through the second sealing plate (49) and is connected to the left end of the heat dissipation pipe (42).

4. The CNC gantry milling machine head cooling assembly according to claim 1, characterized in that: The liquid outlet tube (43) is a universal bamboo joint tube.

5. A milling head cooling assembly for a CNC gantry milling machine according to claim 1, characterized in that: The connecting pipe (5) is a metal rigid pipe, and the connecting pipe (5) is fixedly connected to the cooling pipe (41) and connected by a spiral spring pipe (6).

6. A milling head cooling assembly for a CNC gantry milling machine according to claim 5, characterized in that: The angle adjustment device (2) includes a housing (21). A collar (7) is fixedly sleeved on the bottom of the outer surface of the housing (21). A slider (71) that can slide around the collar (7) is slidably mounted on the collar (7). The top end of the connecting tube (5) is fixedly mounted on the slider (71). The top end of the connecting tube (5) passes through the slider (71) and is fixedly connected and communicates with the helical spring tube (6). The helical spring tube (6) is located between the bottom end of the slider (71) and the cooling tube (41). The helical spring tube (6) located between the bottom end of the slider (71) and the cooling tube (41) is wound around the housing (21).

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