Numerical control planer type milling machine based on rotary type cooling liquid spraying heat dissipation

Abstract

The utility model relates to the technical field of numerical control planer type milling machines, in particular to a numerical control planer type milling machine based on rotary type cooling liquid spraying heat dissipation, which comprises a planer type milling machine body, the planer type milling machine body comprises a spindle box body, a cooling liquid supply system and a driving shaft body arranged in the spindle box body in a penetrating mode, and the lower end of the driving shaft body is connected with a milling cutter disc. The outer side of the driving shaft body is sleeved with a connecting pipe body fixed to the lower plane of the spindle box body, the outer circle face of the connecting pipe body is connected with a rotary support, the lower plane of the rotary support is connected with an annular hollow shell, the outer circle face of the annular hollow shell is connected with a liquid inlet pipe, and a flexible telescopic hose is connected between the liquid inlet pipe and the cooling liquid supply system. The outer circle face of the annular hollow shell is connected with a first bamboo joint pipe spray head, a second bamboo joint pipe spray head and a third bamboo joint pipe spray head which can be bent in an annular array mode. The heat dissipation device is reasonable in structure, and solves the problems that the heat dissipation uniformity is poor, and many scratches exist in a machined area of a workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled gantry milling machines, in particular to a numerically controlled gantry milling machine based on rotary spraying of coolant for heat dissipation. Background Art

[0002] A CNC gantry milling machine, also known as a CNC gantry milling machine, is a milling machine with a portal frame and a long horizontal bed. Multiple milling cutters can be used simultaneously on a CNC gantry milling machine, achieving high precision and production efficiency. It is suitable for machining flat and inclined surfaces on large workpieces in batch and mass production. It can also process curved surfaces and some special-shaped parts. A CNC gantry milling machine consists of a base, a worktable, a gantry, and a rotating shaft housing mounted on the gantry. The housing is equipped with a drive shaft, and a milling cutter disc is mounted at the lower end of the drive shaft. The workpiece is placed on the worktable and secured. The milling cutter disc can move relative to the worktable on the X, Y, and Z axes, facilitating surface machining of the workpiece.

[0003] In response to the above-mentioned related technologies, the inventors found that when the milling cutter of a CNC gantry milling machine performs horizontal surface processing on the workpiece on the worktable, a lot of heat is generated in the processed area of ​​the workpiece and the milling cutter. The existing CNC gantry milling machines usually use two coolant nozzles to spray coolant on the milling cutter, so as to take away the generated heat and achieve the purpose of heat dissipation. However, since the position of the coolant nozzle relative to the milling cutter is relatively fixed, the coolant cannot be sprayed evenly on the milling cutter and the processed area of ​​the workpiece, the heat dissipation uniformity is poor, and the heat dissipation effect is reduced; at the same time, the milling cutter generates a lot of waste chips. During the high-speed rotation of the milling cutter, it is easy to drive the waste chips to move quickly. The more moving waste chips are easy to cause scratches on the processed surface, affecting the surface roughness of the processed surface and reducing the processing quality. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a CNC gantry milling machine based on rotary spraying coolant for heat dissipation, which solves the problems of poor heat dissipation uniformity and many scratches on the processed area of ​​the workpiece.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a CNC gantry milling machine based on rotary spraying coolant heat dissipation, comprising: a gantry milling machine body, the gantry milling machine body comprising a spindle housing, a coolant supply system and a driving shaft body passing through the spindle housing, the lower end of the driving shaft body being connected to a milling cutter disc, the outer side of the driving shaft body being sleeved with a connecting pipe body fixed to the lower plane of the spindle housing, the outer circumferential surface of the connecting pipe body being connected to a slewing support, the lower plane of the slewing support being connected to an annular hollow shell, the outer circumferential surface of the annular hollow shell being connected to a liquid inlet pipe, and a flexible telescopic hose being connected between the liquid inlet pipe and the coolant supply system;

[0006] The outer circular surface of the annular hollow shell is connected to a bendable bamboo tube nozzle 1, bamboo tube nozzle 2 and bamboo tube nozzle 3 in an annular array, and also includes a driving mechanism for driving the rotary support to rotate back and forth.

[0007] By adopting the above technical solution, when in use, the workpiece to be processed is placed on the workbench, and the workpiece and the workbench are fixed with a fixture. The active shaft on the gantry milling machine body rotates, thereby driving the milling cutter disc to perform surface processing on the workpiece. The milling cutter disc and the workpiece generate a lot of heat due to friction. At this time, the driving mechanism drives the rotary support to rotate, and the rotary support drives the bamboo tube nozzle 1, bamboo tube nozzle 2 and bamboo tube nozzle 3 to rotate in a circle through the annular hollow shell. The coolant supply system provides high-pressure coolant through a flexible telescopic hose into the annular hollow shell. The coolant in the annular hollow shell is sprayed with coolant to the workpiece and the milling cutter disc through the bamboo tube nozzle 1, bamboo tube nozzle 2 and bamboo tube nozzle 3, respectively, to achieve the purpose of uniform heat dissipation and enhance the heat dissipation effect. At the same time, the waste chips milled by the milling cutter disc are driven to move outward by the coolant, reducing the scratches on the processed surface caused by the rapid movement of the waste chips driven by the milling cutter disc, thereby improving the processing quality.

[0008] In a preferred example, the present invention can be further configured as follows: the spraying direction of the bamboo tube nozzle 1 points to the bottom of the milling cutter disc, so that the sprayed coolant can dissipate heat from the contact area between the milling cutter disc and the workpiece.

[0009] By adopting the above technical solution, the coolant sprayed by the rotating bamboo tube nozzle can be evenly sprayed on the contact area between the milling cutter disc and the workpiece, thereby enhancing the heat dissipation effect.

[0010] In a preferred example, the present invention can be further configured as follows: the coolant sprayed by the second bamboo tube nozzle falls on one side of the contact area between the milling cutter disc and the workpiece, and the coolant sprayed by the third bamboo tube nozzle falls on the other side of the contact area between the milling cutter disc and the workpiece.

[0011] By adopting the above technical solution, the rotary support drives the bamboo-joint tube nozzles 2 and 3 on the annular hollow shell to rotate in a circle. While the bamboo-joint tube nozzles 2 and 3 spray coolant on the workpiece to dissipate heat, they also drive the waste chips milled by the milling cutter disc to the outside, thereby reducing scratches on the processed surface caused by the rapid movement of the waste chips driven by the milling cutter disc.

[0012] In a preferred example, the present invention can be further configured as follows: the driving mechanism drives the rotary support to perform a 120-degree reciprocating rotation.

[0013] By adopting the above technical solution, while not causing tensile damage to the flexible telescopic hose, the bamboo tube nozzles one, two and three can evenly spray coolant on the milling cutter disc and the workpiece.

[0014] In a preferred example, the present invention can be further configured as follows: the driving mechanism includes a mounting plate and a servo motor fixed on the mounting plate, the protruding shaft of the servo motor is sleeved with a driving gear, the driving gear is meshed with the rotary support, and one end of the mounting plate is fixedly connected to the spindle box.

[0015] By adopting the above technical solution, the servo motor drives the driving gear to rotate, the driving gear drives the slewing support to rotate, and the slewing support drives the bamboo tube nozzle 1, bamboo tube nozzle 2 and bamboo tube nozzle 3 to rotate in a circle through the annular hollow shell.

[0016] In summary, the present invention has at least one of the following beneficial technical effects:

[0017] The driving mechanism drives the bamboo-joint tube nozzles 1, 2 and 3 to rotate back and forth through the rotary support and the annular hollow shell, which can evenly spray coolant on the milling cutter disc and the workpiece to dissipate heat, thereby enhancing the heat dissipation effect. At the same time, the waste chips milled by the milling cutter disc are driven outward, reducing the scratches on the processed surface caused by the rapid movement of the waste chips driven by the milling cutter disc, thereby improving the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0019] Figure 1 The utility model is a structural schematic diagram of a preferred embodiment of a CNC gantry milling machine based on rotary spraying coolant for heat dissipation.

[0020] Figure 2 yes Figure 1 Schematic diagram of the structure of the connection between the central connecting pipe body, slewing support and annular hollow shell.

[0021] In the figure: 2, milling cutter head; 3, connecting pipe body; 4, slewing support; 5, annular hollow shell; 6, liquid inlet pipe; 7, flexible telescopic hose; 80, driving mechanism;

[0022] 11. Spindle housing; 12. Coolant supply system; 13. Driving shaft;

[0023] 21. Bamboo tube nozzle 1; 22. Bamboo tube nozzle 2; 23. Bamboo tube nozzle 3;

[0024] 81. Mounting plate; 82. Servo motor; 83. Driving gear. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0026] It should be noted that these drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0027] Reference Figures 1-2 , which is a CNC gantry milling machine based on rotary spraying coolant heat dissipation disclosed by the utility model, including: a gantry milling machine body, the gantry milling machine body includes a spindle box body 11, a coolant supply system 12 and a driving shaft body 13 passing through the spindle box body 11, the lower end of the driving shaft body 13 is connected with a milling cutter disc 2, the outer side of the driving shaft body 13 is sleeved with a connecting pipe body 3 fixed to the lower plane of the spindle box body 11, the outer cylindrical surface of the connecting pipe body 3 is connected with a slewing support 4, the lower plane of the slewing support 4 is connected with an annular hollow shell 5, the outer cylindrical surface of the annular hollow shell 5 is connected with a liquid inlet pipe 6, and a flexible telescopic hose 7 is connected between the liquid inlet pipe 6 and the coolant supply system 12.

[0028] The outer circular surface of the annular hollow shell 5 is connected to a flexible bamboo tube nozzle 1 21, a bamboo tube nozzle 2 22 and a bamboo tube nozzle 3 23 in an annular array, and also includes a driving mechanism 80 for driving the rotary support 4 to rotate back and forth; the driving mechanism 80 includes a mounting plate 81 and a servo motor 82 fixed on the mounting plate 81, and the extended shaft of the servo motor 82 is sleeved with a driving gear 83, which is meshed with the rotary support 4, and one end of the mounting plate 81 is fixedly connected to the spindle box 11; the servo motor 82 drives the driving gear 83 to rotate, and the driving gear 83 drives the rotary support 4 to rotate, and the rotary support 4 drives the bamboo tube nozzle 1 21, the bamboo tube nozzle 2 22 and the bamboo tube nozzle 3 23 to rotate in a circle through the annular hollow shell 5.

[0029] The spraying direction of the bamboo tube nozzle 21 points to the bottom of the milling cutter disc 2, so that the sprayed coolant can dissipate heat in the contact area between the milling cutter disc 2 and the workpiece; the coolant sprayed by the rotating bamboo tube nozzle 21 can be evenly sprayed on the contact area between the milling cutter disc 2 and the workpiece, thereby enhancing the heat dissipation effect. The spraying angle of the bamboo tube nozzle 21 can also be appropriately adjusted according to actual conditions.

[0030] The coolant sprayed from the second bamboo tube nozzle 22 falls on one side of the contact area between the milling cutter disc 2 and the workpiece, and the coolant sprayed from the third bamboo tube nozzle 23 falls on the other side of the contact area between the milling cutter disc 2 and the workpiece; the rotary support 4 drives the second bamboo tube nozzle 22 and the third bamboo tube nozzle 23 on the annular hollow shell 5 to rotate in a circle. While the second bamboo tube nozzle 22 and the third bamboo tube nozzle 23 spray coolant on the workpiece to dissipate heat, they also drive the waste chips milled by the milling cutter disc 2 to the outside, reducing the scratches on the processed surface caused by the rapid movement of the waste chips driven by the milling cutter disc 2.

[0031] The driving mechanism 80 drives the rotary support 4 to rotate back and forth 120 degrees; without causing tensile damage to the flexible telescopic hose 7, the bamboo tube nozzle 1 21, the bamboo tube nozzle 2 22 and the bamboo tube nozzle 3 23 are used to evenly spray coolant on the milling cutter disc 2 and the workpiece.

[0032] The implementation principle of this embodiment is as follows: when in use, the workpiece to be processed is placed on the workbench, and the workpiece and the workbench are fixed with a fixture. The active shaft 13 on the gantry milling machine body rotates, thereby driving the milling cutter disc 2 to perform surface processing on the workpiece. The milling cutter disc 2 and the workpiece generate a lot of heat due to friction. At this time, the driving mechanism 80 works to drive the rotary support 4 to rotate, and the rotary support 4 drives the bamboo tube nozzle 1 21, the bamboo tube nozzle 2 22 and the bamboo tube nozzle 3 23 to perform circular rotation through the annular hollow shell 5. The coolant supply system 12 provides high-pressure coolant through the flexible telescopic hose 7 to enter the annular hollow shell 5, and the coolant in the annular hollow shell 5 is sprayed onto the workpiece and the milling cutter disc 2 through the bamboo tube nozzle 1 21, the bamboo tube nozzle 2 22 and the bamboo tube nozzle 3 23 respectively, so as to achieve the purpose of uniform heat dissipation and enhance the heat dissipation effect. At the same time, the waste chips milled by the milling cutter disc 2 are driven to move outward by the coolant, reducing the scratches on the processed surface caused by the rapid movement of the waste chips driven by the milling cutter disc 2, thereby improving the processing quality.

[0033] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A CNC gantry milling machine based on rotary spray coolant heat dissipation, comprising: A gantry milling machine body, the gantry milling machine body comprising a spindle housing (11), a coolant supply system (12) and a driving shaft (13) passing through the spindle housing (11), the lower end of the driving shaft (13) being connected to a milling cutter disc (2), characterized in that a connecting pipe (3) fixed to the lower plane of the spindle housing (11) is sleeved on the outer side of the driving shaft (13), the outer cylindrical surface of the connecting pipe (3) being connected to a rotary support (4), the lower plane of the rotary support (4) being connected to an annular hollow shell (5), the outer cylindrical surface of the annular hollow shell (5) being connected to a liquid inlet pipe (6), a flexible telescopic hose (7) being connected between the liquid inlet pipe (6) and the coolant supply system (12); The outer circular surface of the annular hollow shell (5) is connected to a bendable bamboo tube nozzle 1 (21), bamboo tube nozzle 2 (22) and bamboo tube nozzle 3 (23) in an annular array, and also includes a driving mechanism (80) for driving the rotary support (4) to rotate back and forth.

2. The CNC gantry milling machine based on rotary spraying coolant heat dissipation according to claim 1 is characterized in that: The spraying direction of the bamboo tube nozzle 1 (21) is directed to the bottom of the milling cutter disc (2), so that the sprayed coolant can dissipate heat from the contact area between the milling cutter disc (2) and the workpiece.

3. The CNC gantry milling machine based on rotary spraying coolant heat dissipation according to claim 1 is characterized in that: The cooling liquid sprayed by the second bamboo tube nozzle (22) falls on one side of the contact area between the milling cutter disc (2) and the workpiece, and the cooling liquid sprayed by the third bamboo tube nozzle (23) falls on the other side of the contact area between the milling cutter disc (2) and the workpiece.

4. The CNC gantry milling machine based on rotary spraying coolant heat dissipation according to claim 1, characterized in that: The driving mechanism (80) drives the rotary support (4) to perform a 120-degree reciprocating rotation.

5. The CNC gantry milling machine based on rotary spraying coolant heat dissipation according to claim 1, characterized in that: The driving mechanism (80) includes a mounting plate (81) and a servo motor (82) fixed on the mounting plate (81); a protruding shaft of the servo motor (82) is sleeved with a driving gear (83); the driving gear (83) is meshedly connected to the rotary support (4); and one end of the mounting plate (81) is fixedly connected to the spindle housing (11).

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