Cooling nozzle structure and numerical control grinding machine

Abstract

The utility model provides a cooling nozzle structure and a numerical control grinding machine. The cooling nozzle structure comprises an elbow nozzle, a cooling pipeline, a first driving device and a mounting seat. The inlet end of the cooling pipeline is used for being connected with a cooling liquid supply device, and the outlet end of the cooling pipeline is connected with an inlet of the elbow nozzle. The mounting base is provided with a first guide hole in the vertical direction, and the cooling pipeline is arranged in the first guide hole in a penetrating mode. And the first driving device is fixed on the mounting seat, is arranged in parallel with the cooling pipeline, and is used for driving the cooling pipeline to reciprocate along the guide direction of the first guide hole. According to the cooling nozzle structure and the numerical control grinding machine, the complexity of a cooling pipeline can be reduced, interference to a feeding and discharging mechanism is reduced, the use types and the number of parts are reduced, and the weight and the size of the whole structure are reduced.

Description

Technical Field

[0001] This application relates to the field of machine tool equipment technology, and in particular to a cooling nozzle structure and a CNC grinding machine. Background Technology

[0002] Currently, most CNC creep-feed grinding machines use horizontally arranged cooling nozzles. This layout not only results in excessively long cooling pipes, but also makes it easy for the robot to interfere with the cooling nozzles and pipes when loading and unloading the grinding machine. Furthermore, the overall structure of the cooling nozzles and related components is complex, with numerous parts, leading to a larger overall product size and weight. Summary of the Invention

[0003] Based on this, this application provides a cooling nozzle structure and a CNC grinding machine to improve the problems existing in the prior art, such as complicated cooling pipes, easy interference with loading and unloading mechanisms, and large overall size caused by a large number of parts.

[0004] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0005] On one hand, embodiments of this application provide a cooling nozzle structure, including an elbow nozzle, a cooling pipe, a first driving device, and a mounting base;

[0006] The inlet end of the cooling pipe is used to connect to the coolant supply device, and the outlet end is connected to the inlet of the elbow nozzle; the mounting base is provided with a first guide hole in the vertical direction, and the cooling pipe passes through the first guide hole;

[0007] The first driving device is fixed on the mounting base and arranged in parallel with the cooling pipe, and is used to drive the cooling pipe to reciprocate along the guiding direction of the first guide hole.

[0008] In one embodiment, a linear bearing is provided in the first guide hole, and the cooling pipe is slidably connected to the mounting base through the linear bearing.

[0009] In one embodiment, the first drive device includes a first servo motor and a first ball screw. The first servo motor is fixed to the outer top of the mounting base, and the mounting base has a first shaft hole corresponding to the first servo motor. The first ball screw includes a first screw and a first nut that cooperate with each other. The mounting base encloses the first ball screw in its internal space. One end of the first screw passes through the first shaft hole, and the first screw is fixedly connected to the output shaft of the first servo motor through a coupling. The first nut is fixedly connected to the cooling pipe.

[0010] In one embodiment, the cooling nozzle structure further includes a first housing, which is disposed outside the first servo motor and detachably connected to the mounting base, the first housing enclosing the first servo motor in its internal cavity.

[0011] In one embodiment, the cooling pipe is fitted with a first bellows cover, one end of which is fixed to the outer top of the mounting base.

[0012] In one embodiment, the cooling nozzle structure further includes a second driving device, which is drivenly connected to the mounting base and is located on the back side of the spray direction of the elbow nozzle, for driving the mounting base to reciprocate in the horizontal direction.

[0013] In one embodiment, the second drive device includes a second servo motor, a reducer, and a second ball screw; the second ball screw includes a second screw and a second nut, the output shaft of the second servo motor is directly connected to the second screw through the reducer, and the second nut is fixedly connected to the mounting base.

[0014] In one embodiment, the second servo motor is arranged vertically, and the mounting base is provided with two sets of second guide holes spaced apart in the horizontal direction. A guide shaft is respectively inserted into each set of second guide holes. One end of the guide shaft is fixedly connected to the second screw through a fixing member, and the other end is provided with a limiting member. The guide shaft and the mounting base are slidably connected.

[0015] In one embodiment, the cooling nozzle structure further includes a second housing and a second bellows cover. The second housing covers the second servo motor and encloses the second servo motor in its internal cavity. The fastener is fixed to the second housing. The second bellows cover is sleeved on the second screw and is located between the mounting base and the second housing.

[0016] On the other hand, embodiments of this application provide a CNC grinding machine, including the cooling nozzle structure described above.

[0017] This application has at least the following beneficial effects: The cooling nozzle structure provided in this application includes an elbow nozzle, a cooling pipe, and a first driving device. The cooling pipe and the first driving device are arranged vertically, greatly reducing the interference of the cooling nozzle structure on the loading and unloading mechanism. In addition to providing coolant to the elbow nozzle, the cooling pipe also has a guiding function. The cooling pipe passes through a first guide hole and acts as a guide rod when the first driving device drives it to move vertically. This structure reduces the use of guide rod components, reduces the number and types of parts used, simplifies the overall structure of the cooling nozzle, reduces the volume occupied by the overall structure, and lowers production input costs. The CNC grinding machine provided in this application includes the above-mentioned cooling nozzle structure and therefore also has the above-mentioned beneficial effects. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the cooling nozzle structure according to an embodiment of this application.

[0019] Figure 2 for Figure 1 A partially exploded structural diagram of the cooling nozzle.

[0020] Figure 3 This is a schematic diagram of the main body of the mounting base according to an embodiment of this application.

[0021] Figure 4 for Figure 1 A schematic diagram of the internal structure of the cooling nozzle (with some panels removed).

[0022] Figure 5 for Figure 1 A cross-sectional view of the cooling nozzle structure.

[0023] The meanings of the labels in the attached diagram are as follows:

[0024] 1. Elbow nozzle;

[0025] 2. Cooling piping; 21. First bellows cover;

[0026] 3. Mounting base; 31. Body part; 311. Top plate; 312. Bottom plate; 313. Inner cavity; 314. First guide hole; 315. Second guide hole; 316. Mounting hole; 317. First shaft hole; 32. Side plate;

[0027] 4. First drive device; 41. First servo motor; 411. First housing; 42. First ball screw; 421. First screw; 422. First nut;

[0028] 5. Second drive unit; 51. Second ball screw; 511. Second screw; 512. Second nut; 513. Second bellows cover; 52. Second servo motor; 521. Second housing; 53. Reducer;

[0029] 6. Guide shaft; 61. Limiting component; 62. Fixing component;

[0030] 7. Bearings; 8. Linear bearings; 9. Couplings. Detailed Implementation

[0031] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the ways in which this application may be implemented. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] In the description of this application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] Please see Figure 1 and Figure 2 The cooling nozzle structure of this application embodiment includes an elbow nozzle 1, a cooling pipe 2, a first driving device 4, and a mounting base 3.

[0036] The inlet end of the cooling pipe 2 is used to connect to the coolant supply device, and the outlet end is connected to the inlet of the elbow nozzle 1; the mounting base 3 is provided with a first guide hole 314 in the vertical direction, and the cooling pipe 2 passes through the first guide hole 314.

[0037] The first driving device 4 is fixed on the mounting base 3 and arranged in parallel with the cooling pipe 2, and is used to drive the cooling pipe 2 to move back and forth along the guiding direction of the first guide hole 314.

[0038] Specifically, in this embodiment, the angle between the inlet and outlet ends of the elbow nozzle 1 is nearly a right angle, meaning that the liquid inlet direction and the liquid outlet direction of the elbow nozzle 1 are perpendicular to each other. This nozzle structure allows the cooling pipe 2 to be laid out vertically, so as to rationally arrange the cooling nozzle structure, reduce the pipe length and complexity, and avoid interference with mechanisms such as loading and unloading robots.

[0039] like Figure 2 and Figure 3 As shown, the mounting base 3 in this embodiment includes a main body 31 and a side plate 32. The main body 31 has an inner cavity 313, which is horizontally oriented. The side plate 32 is detachably connected to the main body 31 and is used to close the opening of the inner cavity 313. The main body 31 has a first guide hole 314, which communicates with the inner cavity 313 and penetrates the top plate 311 and bottom plate 312 of the main body 31. The top plate 311 of the main body 31 also has a first shaft hole 317, which communicates with the inner cavity 313. The first shaft hole 317 is located on the side away from the grinding wheel (grinding head) of the grinding machine, opposite to the first guide hole 314, i.e., the bent nozzle 1 is positioned close to the grinding wheel. Two sets of second guide holes 315 are provided at horizontal intervals on the side surface of the main body 31 away from the side plate 32, and a set of mounting holes 316 is provided between the two sets of second guide holes 315. The second guide holes 315 and the mounting holes 316 are respectively arranged in the horizontal direction.

[0040] like Figure 2 and Figure 4 As shown, this embodiment uses a standard hollow guide tube as the cooling pipe 2. Linear bearings 8 are respectively installed in the first guide hole 314 of the top plate 311 and the first guide hole 314 of the bottom plate 312 of the main body 31. The cooling pipe 2 passes through the linear bearings 8 and is slidably connected to the mounting base 3 through the linear bearings 8, which is used to drive the elbow nozzle 1 to move in the vertical direction. The cooling pipe 2 is covered with a first bellows cover 21. One end of the first bellows cover 21 is fixed to the outer top of the mounting base 3. The first bellows cover 21 is used to protect the cooling pipe 2 and to seal and protect the connection between the cooling pipe 2 and the mounting base 3.

[0041] The first drive device 4 in this embodiment includes a first servo motor 41 and a first ball screw 42. The first servo motor 41 is fixed to the outer surface of the top plate 311 of the main body 31 of the mounting base 3, and the first shaft hole 317 is correspondingly positioned to the mounting base 3. The first ball screw 42 includes a first screw 421 and a first nut 422 that work together. The mounting base 3 encloses the first ball screw 42 in its internal space, that is, the first ball screw is located in the inner cavity 313 of the mounting base 3. The upper end of the first screw 421 passes through the first shaft hole 317, and the first screw 421 is fixedly connected to the output shaft of the first servo motor 41 through a coupling 9. The first nut 422 is fixedly connected to the cooling pipe 2. A bearing 7 is provided in the first shaft hole 317, and the first screw 421 passes through the bearing 7. The first servo motor 41 and the coupling 9 are located outside the inner cavity 313 of the main body 31.

[0042] To further improve the waterproof performance of the cooling nozzle structure, a first cover 411 can be provided. The first cover 411 covers the first servo motor 41 and is detachably connected to the mounting base 3. The first cover 411 encloses the first servo motor 41 in its internal cavity.

[0043] like Figure 2 and Figure 5 As shown, in some embodiments, the cooling nozzle structure further includes a second driving device 5, which is drivenly connected to the mounting base 3 and is located on the back side of the spray direction of the elbow nozzle 1, for driving the mounting base 3 to reciprocate in the horizontal direction.

[0044] Specifically, the second drive device 5 includes a second servo motor 52, a reducer 53, and a second ball screw 51. The second ball screw 51 includes a second screw 511 and a second nut 512. The output shaft of the second servo motor 52 is directly connected to the second screw 511 through the reducer 53, and the second nut 512 is fixedly connected to the mounting base 3.

[0045] The second servo motor 52 is arranged vertically. A guide shaft 6 is inserted into each set of second guide holes 315 of the mounting base 3. One end of each guide shaft 6 is fixedly connected to a fixing member 62 and a second screw 511, while the other end is provided with a limiting member 61 located on the side of the mounting base 3 near the grinding wheel. The limiting member 61 can be plate-shaped or rod-shaped, etc., and fixes the two guide shafts 6 to prevent them from detaching from the mounting base 3. The guide shafts 6 and the mounting base 3 are slidably connected. For example, a bearing 7 or other component can be installed in the second guide hole 315 to reduce friction, and then the guide shaft 6 is inserted into the bearing 7. The second screw 511 is located between the two guide shafts 6 and is inserted into the mounting hole 316. To further improve the waterproof performance of the cooling nozzle structure, a second bellows cover 513 can be fitted over the second screw 511. The two ends of the second bellows cover 513 abut against the outer wall of the mounting base 3 and the fixing member 62, respectively. A second cover 521 can also be provided over the second servo motor 52 to enclose the second servo motor 52 inside the second cover 521. The second cover 521 is used to protect the second servo motor 52, such as by providing waterproofing or protection against impacts.

[0046] In this embodiment, the reducer 53 is a planetary right-angle reducer 53. By directly connecting the reducer 53 to the second screw 511, the traditional synchronous belt or coupling 9 can be eliminated, effectively reducing the weight of the overall structure. Calculations show a weight reduction of approximately 30% and a volume reduction of approximately 20%. The reduction in components also lowers production costs. The fixing member 62 has a through hole, and a bearing 7 is installed inside the through hole. The second screw 511 passes through the bearing 7 and through the through hole, directly connecting to the reducer 53.

[0047] This application also provides a CNC grinding machine, which may be, for example, a CNC creep-feed grinding machine. The CNC grinding machine of this embodiment includes a machine base, a grinding wheel mounted on the machine base, and a cooling nozzle structure as described in the above embodiment, the cooling nozzle structure being used to cool the grinding wheel. A second cover 521 is fixedly mounted on the machine base.

[0048] The cooling nozzle structure and CNC grinding machine provided in this application embodiment have a simple overall structure, which can effectively reduce the probability of interference with the loading and unloading mechanism. The position of the elbow nozzle is adjusted by a first servo motor and a second servo motor, aligning it with the grinding wheel position to improve the cooling effect. It adopts an integrated box structure, reducing the types and number of parts and lowering the difficulty of production and assembly. The enclosed protective cover design reduces the probability of damage to the motor and nozzle.

[0049] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0050] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A cooling nozzle structure, characterized in that, Includes elbow nozzle, cooling pipes, first drive unit and mounting base; The inlet end of the cooling pipe is used to connect to the coolant supply device, and the outlet end is connected to the inlet of the elbow nozzle; the mounting base is provided with a first guide hole in the vertical direction, and the cooling pipe passes through the first guide hole; The first driving device is fixed on the mounting base and arranged in parallel with the cooling pipe, and is used to drive the cooling pipe to reciprocate along the guiding direction of the first guide hole.

2. The cooling nozzle structure as described in claim 1, characterized in that, A linear bearing is provided in the first guide hole, and the cooling pipe is slidably connected to the mounting base through the linear bearing.

3. The cooling nozzle structure as described in claim 1, characterized in that, The first drive device includes a first servo motor and a first ball screw. The first servo motor is fixed to the outer top of the mounting base, and the mounting base is provided with a first shaft hole corresponding to the first servo motor. The first ball screw includes a first screw and a first nut that work together. The mounting base encloses the first ball screw in its internal space. One end of the first screw passes through the first shaft hole, and the first screw is fixedly connected to the output shaft of the first servo motor through a coupling. The first nut is fixedly connected to the cooling pipe.

4. The cooling nozzle structure as described in claim 3, characterized in that, It also includes a first housing, which is disposed outside the first servo motor and is detachably connected to the mounting base, and the first housing encloses the first servo motor in its internal cavity.

5. The cooling nozzle structure as described in claim 1, characterized in that, The cooling pipe is fitted with a first bellows cover, one end of which is fixed to the top of the mounting base.

6. The cooling nozzle structure as described in claim 1, characterized in that, It also includes a second driving device, which is drivenly connected to the mounting base and is located on the back side of the spray direction of the elbow nozzle, for driving the mounting base to reciprocate in the horizontal direction.

7. The cooling nozzle structure as described in claim 6, characterized in that, The second drive device includes a second servo motor, a reducer, and a second ball screw; the second ball screw includes a second screw and a second nut, the output shaft of the second servo motor is directly connected to the second screw through the reducer, and the second nut is fixedly connected to the mounting base.

8. The cooling nozzle structure as described in claim 7, characterized in that, The second servo motor is arranged vertically, and the mounting base is provided with two sets of second guide holes spaced apart in the horizontal direction. A guide shaft is inserted into each set of second guide holes. One end of the guide shaft is fixedly connected to the second screw through a fixing member, and the other end is provided with a limiting member. The guide shaft and the mounting base are slidably connected.

9. The cooling nozzle structure as described in claim 8, characterized in that, It also includes a second cover and a second bellows cover. The second cover covers the second servo motor and encloses the second servo motor in its internal cavity. The fastener is fixed to the second cover. The second bellows cover is sleeved on the second screw and is located between the mounting base and the second cover.

10. A CNC grinding machine, characterized in that: Includes the cooling nozzle structure as described in any one of claims 1 to 9.

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