A precision large grinder with circulating cooling structure

Abstract

The utility model relates to the technical field of grinding machine, concretely relates to a precision large grinding machine with circulating cooling structure. The precision large grinding machine has a protective cover, the protective cover is composed of metal framework and metal outer plate, the framework is composed of a plurality of muscle columns, and the outer plate is fixed on the outside of the muscle column to surround the grinding machine main body. The muscle column is a hollow structure, and the muscle column is provided with a water outlet and a water inlet in communication with the hollow cavity. The grinding machine main body comprises a support crossbeam and a column, and cooling pipes are embedded in the cavities of the support crossbeam and the column. The muscle column and the cooling pipes are circulated by the cooling liquid recovery supply device. The grinding machine of the utility model utilizes the water curtain type protective cover to isolate the external environment temperature, and then controls the temperature of the support structure of the grinding machine main body through the cooling pipes in the crossbeam and the column, thereby reducing the influence of temperature change on machining accuracy.

Description

Technical Field

[0001] This utility model relates to the field of grinding machine technology, and specifically to a precision large grinding machine with a circulating cooling structure. Background Technology

[0002] Precision large-scale grinding machines, as high-end manufacturing equipment, are widely used in aerospace, shipbuilding, automotive, and other industries. During processing, the grinding machine undergoes thermal deformation due to the combined effects of internal heat sources and external ambient temperature, leading to a decrease in machining accuracy. Typically, precision large-scale grinding machines are housed in temperature-controlled workshops to regulate the external temperature. However, temperature-controlled workshops are costly and require large spaces, making precise temperature control difficult. Furthermore, the internal heat generated during grinding operation is difficult to dissipate quickly, necessitating further improvements to the cooling systems of precision large-scale grinding machines. Utility Model Content

[0003] To address at least one aspect of the aforementioned technical problems, this utility model provides a precision large-scale grinding machine with a circulating cooling structure. It utilizes a "water curtain" protective cover to isolate the external ambient temperature and further ensures the processing temperature and improves processing accuracy through cooling pipes inside the crossbeam and column.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A precision large grinding machine with a circulating cooling structure is provided, including a coolant recovery and supply device, a base, a grinding machine body and a protective cover, wherein the grinding machine body and the protective cover are both mounted on the base, and the grinding machine body is disposed inside the protective cover;

[0006] The protective cover includes a frame and an outer plate made of thermally conductive material. The frame is composed of multiple ribs, and the outer plate is fixed to the outside of the ribs, surrounding the grinding machine body. The ribs are hollow structures, and each rib has an outlet and an inlet that communicate with the hollow cavity. The inlet of each rib is connected to the supply port of the coolant recovery and supply device, and the outlet of each rib is connected to the return port of the coolant recovery and supply device.

[0007] Furthermore, a water return groove is formed on the top surface of the base, the water outlet of the rib column is connected to the water return groove, a drain outlet is formed on the side wall of the water return groove, and the drain outlet is connected to the return port of the coolant recovery supply device.

[0008] Furthermore, the outer panel includes a side wall panel and a top panel; multiple longitudinal stiffeners are fixed on the side wall panel, and a horizontal stiffener is fixed on the bottom edge of the side wall panel; each longitudinal stiffener has a water inlet at its upper end and a water outlet at its lower end; the horizontal stiffener has multiple water inlets that correspond one-to-one with the water outlets of the longitudinal stiffeners, and the water outlets of the horizontal stiffeners are connected to the return water tank through an inclined drain pipe.

[0009] Furthermore, the water inlets of each longitudinal rib are connected in series via water inlet pipes, which are connected to the supply port of the coolant recovery and supply device.

[0010] Furthermore, the grinding machine body includes a support beam for mounting the grinding head;

[0011] The supporting beam has multiple longitudinally penetrating cavities evenly formed on it. A coolant pipe is arranged laterally on the top surface of the supporting beam. The coolant pipe is connected to the supply port of the coolant recovery and supply device. The coolant pipe has multiple outlets, each outlet corresponding to a cavity. A longitudinally arranged cooling pipe is provided in the cavity corresponding to the outlet. The upper end of the cooling pipe is connected to the outlet, and the lower end of the cooling pipe is connected to the return port of the coolant recovery and supply device.

[0012] Furthermore, the grinding machine body includes a column, which is mounted on the base, and the support beam is mounted on the column; multiple longitudinal cavities are formed on the column, and the corresponding longitudinal cavities are connected to the mold cavity, with cooling pipes passing through the longitudinal cavities and the mold cavity.

[0013] Furthermore, the coolant recovery and supply device includes a filter box, a storage tank, and a water pump. The return water tank is connected to the filter box, the filter box is connected to the storage tank, and the coolant in the storage tank is supplied by the water pump.

[0014] Furthermore, the grinding machine body also includes a grinding head cooling mechanism, which is installed on the grinding head and used to spray coolant onto the workpiece during processing; the supply port of the coolant recovery and supply device is connected to the inlet of the grinding head cooling mechanism.

[0015] Furthermore, both the frame and the outer plate are made of metal.

[0016] Furthermore, the cooling pipe is made of metal.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention relates to a precision large-scale grinding machine. The protective cover features a frame composed of hollow ribs, with circulating coolant within the frame. Both the frame and outer plate of the protective cover are made of thermally conductive material, ensuring a relatively constant temperature within the cover itself, isolating it from external temperatures while maintaining stable internal temperatures. Cavities are formed within the supporting beams and columns of the grinding machine body, each containing circulating coolant pipes. This reduces the impact of external temperatures on the grinding machine body and facilitates rapid heat dissipation from within. This circulating cooling structure improves the machining accuracy of the precision large-scale grinding machine. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of the precision large-scale grinding machine of this utility model is shown;

[0021] Figure 2 This invention presents a schematic diagram of the grinding machine with the outer front panel of the protective cover open, from one perspective.

[0022] Figure 3 This invention presents a schematic diagram of the grinding machine with the front outer plate of the protective cover open, from another perspective.

[0023] Figure 4 A schematic diagram of the structure of the grinding machine of this utility model is shown with the outer plate on one side of the protective cover open.

[0024] Figure 5 The diagram shows a top view of the grinding machine of this invention with the outer plate of the top of the protective cover open. Detailed Implementation

[0025] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.

[0026] The term “including” and its variations as used herein signify open inclusion, i.e., “including but not limited to”.

[0027] like Figures 1-5As shown, the precision large-scale grinding machine of this utility model includes a protective cover 1, a base 2, and a grinding machine body 3. Both the grinding machine body 3 and the protective cover 1 are mounted on the base 2. The grinding machine body 3 is disposed within the protective cover 1. The precision large-scale grinding machine also includes a coolant recovery and supply device (not shown in the figure) for providing circulating coolant to the entire grinding machine's cooling system. The coolant recovery and supply device includes a filter box, a storage tank, and a water pump. The grinding machine's cooling system includes a grinding head cooling mechanism mounted on the grinding head (the grinding head is not mounted on the grinding machine body in the figure), used to spray coolant onto the workpiece on the workpiece table 33 during processing. The coolant recovery and supply device provides circulating coolant to the grinding head cooling mechanism. A water return groove 21 is formed on the top surface of the base. The workpiece table 33 is located in the water return groove 21. A drain outlet 211 is formed on the side wall of the water return groove 21. The drain outlet 211 is connected to the filter box of the coolant recovery and supply device. The cooling water sprayed by the grinding head cooling mechanism flows into the water return groove 21 and from the water return groove 21 into the filter box. The filter box filters out the cutting chips in the coolant and then sends the filtered coolant into the storage tank. The storage tank lowers the temperature of the coolant to the initial temperature and then sends it out by the water pump.

[0028] like Figures 2-5 As shown, the protective cover 1 consists of a frame 11 and an outer plate. The frame 11 is composed of multiple ribs, and the outer plate is fixed to the outside of the ribs 11, surrounding the grinding machine body 3. The ribs are hollow structures, with water outlets and inlets communicating with the hollow cavities. The water inlets of each rib are connected to the supply port of the coolant recovery and supply device, and the water outlets of each rib are connected to the return port of the coolant recovery and supply device. Both the frame 11 and the outer plate are made of thermally conductive materials, preferably metal. It can be understood that the frame is a cage-like structure, with a constant-temperature coolant circulating within the ribs of the frame 11, making the frame as a whole tend towards a constant temperature. Heat conduction occurs between the frame 11 and the outer plate, causing the temperature of the outer plate to tend to match the temperature of the frame 11. Because the protective cover 1 is generally at a constant temperature, the ambient temperature outside the protective cover 1 has little impact on the temperature inside the protective cover 1, keeping the grinding machine body 3 in a near-constant-temperature space and ensuring machining accuracy.

[0029] In a preferred embodiment, the outer panel includes a side wall panel and a top panel. Multiple longitudinal ribs 111 are fixed to the side wall panels, and a horizontal rib 112 is fixed to the bottom edge of the side wall panel. Each longitudinal rib 111 has an inlet 1111 at its upper end and an outlet at its lower end. The horizontal rib 112 has multiple inlets corresponding to the outlets of the longitudinal ribs 111. The outlets of the horizontal ribs 112 drain into the return water tank 21 through an inclined drain pipe. The inlets 111 of each longitudinal rib are connected in series via inlet pipes, which are connected to the supply port of the coolant recovery and supply device. Preferably, multiple transverse ribs are fixed to the top panel. The outlets of the transverse ribs are connected to the longitudinal ribs 111 via inlet pipes, and the inlets of the transverse ribs are connected to the supply pipe of the coolant recovery and supply device.

[0030] In some embodiments, the grinding machine body 3 includes a support beam 31 for mounting the grinding head. Multiple longitudinally penetrating cavities 313 are uniformly formed on the support beam 31. As those skilled in the art know, the support beam 31 is a casting, and the cavities 313 are casting cavities. Cooling pipes (not shown in the figure) are selected and installed in appropriate numbers and positions within the cavities 313 according to actual cooling requirements. The cooling pipes are thin-walled metal pipes; the thinner the wall, the better, while meeting strength requirements. A coolant pipe 311 is transversely arranged on the top surface of the support beam 31, and the coolant pipe 311 is connected to the supply port of the coolant recovery and supply device. Multiple outlets 312 are provided on the coolant pipe 311, each corresponding to a cooling pipe. The upper end of the cooling pipe is connected to an outlet 312, and the lower end of the cooling pipe is directly connected to the storage tank of the coolant recovery and supply device. That is, the coolant flowing out of the cooling pipe flows directly into the storage tank without passing through a filter box. Understandably, the temperature of the cooling pipe is the same as that of the protective cover 1. The cooling pipe is used to control the temperature of the support beam 31, further reducing the impact of external temperature on the grinding machine body, while accelerating the dissipation of internal heat.

[0031] In some embodiments, the grinding machine body further includes a column 31 mounted on the base 2, and a support beam 31 mounted on the column 32. The column 32 has multiple longitudinally penetrating cavities (not shown in the figure), with corresponding cavities communicating with the mold cavity 313. These cavities directly connect to the cooling pipes within the mold cavity, meaning they share a single cooling pipe. The cooling pipes control the temperature of the support beam 31 and the column 32, making the temperature of the main support structure of the grinding machine body controllable and thus ensuring machining accuracy.

[0032] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0033] The above are merely preferred embodiments of this utility model and are illustrative rather than restrictive. The structure and connection methods of the components in this utility model can be varied. Any equivalent transformations and improvements made based on the technical solution of this utility model should not be excluded from the protection scope of this utility model.

Claims

1. A precision large grinding machine with a circulating cooling structure, comprising a coolant recovery and supply device, a base, a grinding machine body, and a protective cover, wherein the grinding machine body and the protective cover are both mounted on the base, and the grinding machine body is disposed inside the protective cover; Its features are, The protective cover includes a frame and an outer plate made of thermally conductive material. The frame is composed of multiple ribs, and the outer plate is fixed to the outside of the ribs, surrounding the grinding machine body. The ribs are hollow structures, and each rib has an outlet and an inlet that communicate with the hollow cavity. The inlet of each rib is connected to the supply port of the coolant recovery and supply device, and the outlet of each rib is connected to the return port of the coolant recovery and supply device.

2. A precision large-scale grinding machine with a circulating cooling structure as described in claim 1, characterized in that, A water return groove is formed on the top surface of the base, the water outlet of the rib column is connected to the water return groove, a drain outlet is formed on the side wall of the water return groove, and the drain outlet is connected to the return port of the coolant recovery supply device.

3. A precision large-scale grinding machine with a circulating cooling structure as described in claim 2, characterized in that, The outer panel includes a side wall panel and a top panel; multiple longitudinal stiffeners are fixed on the side wall panel, and a horizontal stiffener is fixed on the bottom edge of the side wall panel; each longitudinal stiffener has a water inlet at its upper end and a water outlet at its lower end; the horizontal stiffener has multiple water inlets that correspond one-to-one with the water outlets of the longitudinal stiffeners, and the water outlets of the horizontal stiffeners are connected to the return water tank through an inclined drain pipe.

4. A precision large-scale grinding machine with a circulating cooling structure as described in claim 3, characterized in that, The water inlets of each longitudinal rib are connected in series via water inlet pipes, which are connected to the supply port of the coolant recovery and supply device.

5. A precision large-scale grinding machine with a circulating cooling structure as described in claim 1, characterized in that, The grinding machine body includes a support beam, which is used to mount the grinding head; The supporting beam has multiple longitudinally penetrating cavities evenly formed on it. A coolant pipe is arranged laterally on the top surface of the supporting beam. The coolant pipe is connected to the supply port of the coolant recovery and supply device. The coolant pipe has multiple outlets, each outlet corresponding to a cavity. A longitudinally arranged cooling pipe is provided in the cavity corresponding to the outlet. The upper end of the cooling pipe is connected to the outlet, and the lower end of the cooling pipe is connected to the return port of the coolant recovery and supply device.

6. A precision large-scale grinding machine with a circulating cooling structure as described in claim 5, characterized in that, The grinding machine body includes a column, which is mounted on the base, and a support beam is mounted on the column; multiple longitudinal cavities are formed on the column, and the corresponding longitudinal cavities are connected to the mold cavity, with cooling pipes passing through the longitudinal cavities and the mold cavity.

7. A precision large-scale grinding machine with a circulating cooling structure as described in any one of claims 2-4, characterized in that, The coolant recovery and supply device includes a filter box, a storage tank, and a water pump. The return water tank is connected to the filter box, and the filter box is connected to the storage tank. The coolant in the storage tank is supplied by the water pump.

8. A precision large-scale grinding machine with a circulating cooling structure as described in claim 7, characterized in that, The grinding machine body also includes a grinding head cooling mechanism, which is installed on the grinding head and used to spray coolant onto the workpiece during processing; the supply port of the coolant recovery and supply device is connected to the inlet of the grinding head cooling mechanism.

9. A precision large-scale grinding machine with a circulating cooling structure as described in claim 1, characterized in that, Both the frame and the outer plate are made of metal.

10. A precision large-scale grinding machine with a circulating cooling structure as described in claim 6, characterized in that, The cooling pipe is made of metal.

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