Split type circulating cooling structure of spindle box of precision automatic lathe

Abstract

The utility model relates to a split type circulating cooling structure of a spindle box of a precision automatic lathe, which belongs to the technical field of thermal management of numerical control machine tools, can effectively cool the spindle box and prevent thermal deformation caused by temperature rise from influencing the machining precision, and is better in comprehensive practicability. A cooling cavity is formed between the cooling outer box and the spindle box, a connecting ring is arranged between the cooling outer box and the spindle box, threaded holes which are communicated with one another are correspondingly formed in the cooling outer box, the connecting ring and the spindle box, and threaded rods are sequentially arranged in the threaded holes in a penetrating mode to fix the cooling outer box, the connecting ring and the spindle box in a screwed mode. The inlet spiral flow guide plate and the outlet spiral flow guide plate are arranged at the two ends of the spindle box in a sleeving mode correspondingly, and the inlet spiral flow guide plate and the outlet spiral flow guide plate are fixedly welded to the cooling box; and the honeycomb spoiler is fixedly arranged outside the main shaft box in a sleeving manner, and a plurality of honeycomb grooves are formed in the honeycomb spoiler.

Description

A split-type circulating cooling structure for the spindle box of a Swiss-type lathe Technical Field

[0001] This application relates to the field of thermal management technology for CNC machine tools, and in particular to a split-type circulating cooling structure for the spindle box of a Swiss-type lathe. Background Technology

[0002] As is well known, a Swiss-type lathe is a high-precision and high-efficiency CNC lathe designed specifically for machining precision shaft parts with a large length-to-diameter ratio. Its core feature is the coordinated movement of the spindle box and the guide sleeve mechanism. Through the composite control of spindle rotation and Z-axis feed, complex parts can be formed in one step. With the increasing demand for machining micro parts in fields such as precision machinery, medical devices, and aerospace, Swiss-type lathes have gradually become the preferred equipment for high-precision mass production.

[0003] In related technologies, a search revealed that a utility model with patent publication number CN213671829U discloses a Swiss-type lathe for machining wheel axles, comprising: a Swiss-type lathe base, a spindle box disposed above the Swiss-type lathe base, a mounting hole disposed on one outer surface of the spindle box, and a guide sleeve disposed inside the mounting hole, a through hole disposed on one outer surface of the Swiss-type lathe base, and a discharge conveyor belt passing through the through hole, the discharge conveyor belt being located directly below the guide sleeve, a collection box disposed below one end of the discharge conveyor belt, and multiple guide rods fixedly connected to the upper end of the inner wall of the collection box, the guide rods being arranged at an angle.

[0004] Regarding the aforementioned technologies, the applicant has found that although its existing devices can discharge finished products and separate finished products from waste using guide rods, they still have the following drawbacks: In the machining process of CNC Swiss-type lathes, the spindle box, as a core component, undertakes the key functions of high-speed rotation, precise positioning, and power transmission. As the requirements for machining accuracy and efficiency increase, the spindle speed continues to increase, resulting in a significant temperature rise inside the spindle box due to friction, motor heating, and cutting heat. The thermal deformation caused by the temperature rise will directly affect the machining accuracy. The existing devices are not convenient for cooling the spindle box, and their overall practicality is insufficient.

[0005] Therefore, we propose a split-type circulating cooling structure for the Swiss-type lathe spindle box, which can efficiently cool the spindle box. Summary of the Invention

[0006] The purpose of this invention is to provide a split-type circulating cooling structure for the spindle box of a Swiss-type lathe to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A split-type circulating cooling structure for the spindle box of a Swiss-type lathe includes:

[0009] Spindle box;

[0010] A cooling outer box is provided, which forms a cooling cavity with the spindle box. A connecting ring is provided between the cooling outer box and the spindle box. The cooling outer box, the connecting ring and the spindle box are respectively provided with threaded holes that are mutually connected. The three are screwed together and fixed by threaded rods that are sequentially inserted into the threaded holes.

[0011] An inlet spiral guide plate and an outlet spiral guide plate are respectively sleeved on both ends of the main shaft box, and both the inlet spiral guide plate and the outlet spiral guide plate are fixedly welded to the cooling box;

[0012] A honeycomb spoiler is fixedly sleeved on the outside of the spindle box, and a plurality of honeycomb grooves are formed on the honeycomb spoiler.

[0013] A coolant circulation device is installed on the outer cooling box and is used to circulate coolant within the cooling chamber.

[0014] As a further embodiment of this utility model: the coolant circulation device includes an inlet cone, an outlet cone, a magnetic pump, and a hose. The inlet cone and the outlet cone are both fixedly installed on the cooling outer box. The magnetic pump is detachably installed on the cooling outer box. The hose extends out of the outlet cone through a through hole and is fixedly connected to the magnetic pump. After passing through the magnetic pump, the hose extends outward into the inlet cone to form a coolant circulation path.

[0015] As a further improvement of this utility model: the cooling outer box is made of aluminum alloy, and the surface of the cooling cavity is hard anodized.

[0016] As a further improvement of this utility model, a rotary knob is screwed onto the inlet cone.

[0017] As a further improvement of this utility model, magnetic filters are fixedly installed at the connection points between the inlet cone and the outlet cone and the cooling outer box.

[0018] As a further improvement of this utility model, two sensors are symmetrically and detachably installed inside the cooling cavity, and both sensors are temperature sensors.

[0019] As a further improvement of this utility model: the inlet spiral guide plate is arranged with a large pitch, the outlet spiral guide plate is arranged with a small pitch, and the inlet spiral guide plate and the outlet spiral guide plate rotate in opposite directions.

[0020] As a further embodiment of this utility model: one end of the connecting ring is fixedly welded with an annular water baffle plate, the annular water baffle plate is provided with a plurality of water guiding grooves, and the other end of the connecting ring is fitted with a sealing waterproof gasket, the sealing waterproof gasket being pressed into the connecting ring by an interference fit.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] The coolant enters the cooling chamber through the inlet cone. Under the action of the large pitch design of the inlet spiral guide plate, the coolant is quickly guided and forms an initial circulation, achieving uniform cooling of the outer wall of the spindle box. Subsequently, the coolant flows through the honeycomb baffle area, where its unique hexagonal honeycomb groove array divides the coolant flow into multiple fine jets. At the same time, micro-vortices are generated at the edge of each honeycomb groove, significantly enhancing the turbulent heat transfer efficiency. Finally, the coolant enters the outlet spiral guide plate area, which adopts a small pitch design. By reducing the flow velocity, the residence time of the coolant in the high-temperature zone of the spindle box is extended, thereby achieving the purpose of enhancing the cooling effect. Attached Figure Description

[0023] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 is a structural schematic diagram of the cooling outer box, spindle box and threaded rod of this utility model;

[0025] Figure 3 is a schematic diagram of the structure of the cooling outer box and sensor of this utility model;

[0026] Figure 4 is a schematic diagram of the structure of the main spindle box, inlet spiral guide plate, outlet spiral guide plate and honeycomb baffle plate of this utility model.

[0027] Figure 5 is a schematic diagram of the structure of the connecting ring, annular water baffle, sealing waterproof gasket and threaded rod of this utility model.

[0028] Figure 6 is an exploded structural diagram of the connection ring, annular water baffle, sealing waterproof gasket and threaded rod of this utility model;

[0029] Figure 7 is a schematic diagram of the structure of the inlet cone, outlet cone and magnetic pump of this utility model.

[0030] In the diagram: 1. Spindle box; 2. Cooling outer box; 3. Cooling chamber; 4. Connecting ring; 5. Inlet spiral guide plate; 6. Outlet spiral guide plate; 7. Honeycomb baffle; 8. Inlet cone; 9. Outlet cone; 10. Magnetic pump; 11. Hose; 12. Rotary knob; 13. Magnetic filter; 14. Sensor; 15. Annular baffle; 16. Sealing waterproof gasket; 17. Threaded rod. Detailed Implementation

[0031] 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.

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] Please refer to Figures 1-7. In this embodiment of the present invention, a split-type circulating cooling structure for the spindle box of a Swiss Army lathe includes:

[0034] Spindle box 1;

[0035] Cooling outer box 2, cooling chamber 3 is formed between cooling outer box 2 and spindle box 1, connecting ring 4 is provided between cooling outer box 2 and spindle box 1, and threaded holes that are mutually connected are opened on cooling outer box 2, connecting ring 4 and spindle box 1 respectively, and the three are screwed and fixed by threaded rod 17 passing through the threaded holes in sequence.

[0036] The inlet spiral guide plate 5 and the outlet spiral guide plate 6 are respectively sleeved on both ends of the main shaft box 1, and both the inlet spiral guide plate 5 and the outlet spiral guide plate 6 are fixedly welded to the cooling box.

[0037] The honeycomb spoiler 7 is fixedly sleeved on the outside of the main spindle box 1, and several honeycomb grooves are opened on the honeycomb spoiler 7.

[0038] A coolant circulation device is installed on the outer cooling box 2, which is used to circulate the coolant within the cooling chamber 3.

[0039] This is a split-type circulating cooling structure for the spindle box of a Swiss-type lathe. The coolant enters the cooling chamber 3 through the inlet cone 8. Under the action of the large pitch design of the inlet spiral guide plate 5, the coolant is quickly introduced and forms an initial circulation, achieving uniform cooling of the outer wall of the spindle box 1. Subsequently, the coolant flows through the honeycomb baffle 7 area, whose unique hexagonal honeycomb groove array divides the coolant flow into multiple fine jets. At the same time, micro vortices are generated at the edge of each honeycomb groove, significantly enhancing the turbulent heat transfer efficiency. Finally, the coolant enters the area of ​​the counter-rotating outlet spiral guide plate 6. The outlet spiral guide plate 6 adopts a small pitch design, which extends the residence time of the coolant in the high-temperature zone of the spindle box 1 by reducing the flow velocity, thereby achieving the purpose of enhancing the cooling effect. After the coolant circulation is completed, the coolant enters the outlet cone 9 under the action of gravity. By starting the magnetic suction pump 10 and with the cooperation of the hose 11, the coolant is circulated back to the inlet cone 8 to complete the next coolant circulation.

[0040] In Figure 7: the coolant circulation device includes an inlet cone 8, an outlet cone 9, a magnetic pump 10, and a hose 11. The inlet cone 8 and the outlet cone 9 are both fixedly installed on the cooling outer box 2. The magnetic pump 10 is detachably installed on the cooling outer box 2. The hose 11 extends out of the outlet cone 9 through a through hole and is fixedly connected to the magnetic pump 10. After passing through the magnetic pump 10, the hose 11 extends outward into the inlet cone 8 to form a coolant circulation path.

[0041] This invention relates to a split-type circulating cooling structure for the spindle box of a Swiss-type lathe, which enables the coolant to be recycled.

[0042] In Figure 2: the cooling outer box 2 is made of aluminum alloy, and the surface of the cooling cavity 3 is hard anodized.

[0043] This is a split-type circulating cooling structure for the spindle box of a Swiss-type lathe. The aluminum alloy material is lightweight, has high thermal conductivity and is easy to process. The surface of the cooling chamber 3 is hard anodized to improve its corrosion resistance.

[0044] In Figure 1: A rotary knob 12 is screwed onto the inlet cone 8.

[0045] This invention relates to a split-type circulating cooling structure for the spindle box of a Swiss-type lathe, which facilitates the addition of coolant.

[0046] In Figure 7: Magnetic filters 13 are fixedly installed at the connection between the inlet cone 8 and the outlet cone 9 and the cooling outer box 2.

[0047] This is a split-type circulating cooling structure for the spindle box of a Swiss-type lathe. Through the design of this structure, it is possible to filter out impurities such as iron filings.

[0048] In Figure 3: Two sensors 14 are symmetrically and detachably installed in the cooling cavity 3, and both sensors 14 are temperature sensors 14.

[0049] This is a split-type circulating cooling structure for the spindle box of a Swiss-type lathe. Through the setting of this structure, the temperature at the inlet and outlet of the cooling chamber 3 can be monitored.

[0050] In Figure 4: the inlet spiral guide plate 5 is arranged with a large pitch, and the outlet spiral guide plate 6 is arranged with a small pitch, and the inlet spiral guide plate 5 and the outlet spiral guide plate 6 rotate in opposite directions.

[0051] This is a split-type circulating cooling structure for the spindle box of a Swiss-type lathe. The inlet spiral guide plate 5 and the outlet spiral guide plate 6 are arranged in opposite directions to achieve graded control of the kinetic energy of the coolant flow. The large pitch of the inlet spiral guide plate 5 reduces the flow resistance and ensures that the coolant quickly fills the cooling chamber 3. The small pitch of the outlet spiral guide plate 6, combined with the reverse rotation, generates strong shear vortices while decelerating, which increases the turbulence of the coolant and prolongs the residence time in the high-temperature zone, thereby significantly enhancing the heat exchange efficiency.

[0052] In Figures 5-6: One end of the connecting ring 4 is fixedly welded with an annular water baffle 15, and the annular water baffle 15 is provided with several water guide grooves. The other end of the connecting ring 4 is fitted with a sealing waterproof gasket 16, which is pressed into the connecting ring 4 with an interference fit.

[0053] This type of split-type circulating cooling structure for the spindle box of a Swiss-type lathe can effectively prevent coolant from flowing out of the cooling chamber 3 by setting an annular baffle 15 and a sealing waterproof gasket 16.

[0054] In this embodiment, the magnetic pump 10, the inlet spiral guide plate 5, and the outlet spiral guide plate 6 are all commercially available devices known to those skilled in the art. They can be customized or selected according to actual needs. Here, we are only using them without making any structural or functional improvements, so we will not go into detail here. The magnetic pump 10 is equipped with a matching control switch. The installation position of the control switch is selected according to actual usage needs to facilitate operation and control by the operator. The technology is already very mature and can be implemented.

[0055] The implementation principle of the split-type circulating cooling structure for the spindle box of a Swiss-type lathe in this application embodiment is as follows: First, the user turns on the rotary knob 12 to add coolant to the inlet cone 8. Then, the coolant enters the cooling chamber 3 under the action of gravity. Under the action of the large pitch design of the inlet spiral guide plate 5, the coolant is quickly introduced and forms a preliminary circulation, achieving uniform cooling of the outer wall of the spindle box 1. Subsequently, the coolant flows through the honeycomb baffle 7 area, whose unique hexagonal honeycomb groove array divides the coolant flow into multiple fine jets. At the same time, at each honeycomb groove edge The flow generates micro-vortices, significantly enhancing turbulent heat transfer efficiency. Finally, the coolant enters the area of ​​the counter-rotating outlet spiral guide plate 6. The outlet spiral guide plate 6 adopts a small pitch design, which reduces the flow velocity and prolongs the residence time of the coolant in the high-temperature zone of the spindle box 1, thereby achieving the purpose of enhancing the cooling effect. After the coolant circulation is completed, the coolant enters the outlet cone 9 under the action of gravity. The user starts the magnetic pump 10 and, with the cooperation of the hose 11, circulates the coolant to the inlet cone 8 to complete the next coolant circulation.

Claims

1. A split-type circulating cooling structure for the spindle box of a Swiss-type lathe, characterized in that, include: The spindle box (1) and the cooling outer box (2) form a cooling chamber (3) between the cooling outer box (2) and the spindle box (1). A connecting ring (4) is provided between the cooling outer box (2) and the spindle box (1). The cooling outer box (2), the connecting ring (4) and the spindle box (1) are respectively provided with threaded holes that are mutually connected, and the three are fixed by threaded rods (17) passing through the threaded holes in sequence; an inlet spiral guide plate (5) and an outlet spiral guide plate (6). The spiral guide plate (5) and the outlet spiral guide plate (6) are respectively sleeved on both ends of the main spindle box (1), and the inlet spiral guide plate (5) and the outlet spiral guide plate (6) are fixedly welded to the cooling box; the honeycomb baffle plate (7) is fixedly sleeved on the outside of the main spindle box (1), and several honeycomb grooves are opened on the honeycomb baffle plate (7); the coolant circulation device is set on the cooling outer box (2), which is used to circulate the coolant in the cooling chamber (3).

2. The split-type circulating cooling structure for the spindle box of a Swiss-type lathe according to claim 1, characterized in that: The coolant circulation device includes an inlet cone (8), an outlet cone (9), a magnetic pump (10), and a hose (11). The inlet cone (8) and the outlet cone (9) are both fixedly installed on the cooling outer box (2). The magnetic pump (10) is detachably installed on the cooling outer box (2). The hose (11) extends out of the outlet cone (9) through a through hole and is fixedly connected to the magnetic pump (10). After passing through the magnetic pump (10), the hose (11) extends outward into the inlet cone (8) to form a coolant circulation path.

3. The split-type circulating cooling structure for the spindle box of a Swiss-type lathe according to claim 1, characterized in that: The cooling outer casing (2) is made of aluminum alloy, and the surface of the cooling cavity (3) is hard anodized.

4. The split-type circulating cooling structure for the spindle box of a Swiss-type lathe according to claim 2, characterized in that: A rotary knob (12) is screwed onto the inlet cone (8).

5. The split-type circulating cooling structure for the spindle box of a Swiss-type lathe according to claim 2, characterized in that: Magnetic filters (13) are fixedly installed at the connection between the inlet cone (8) and the outlet cone (9) and the cooling outer box (2).

6. The split-type circulating cooling structure for the spindle box of a Swiss-type lathe according to claim 1, characterized in that: Two sensors (14) are symmetrically and detachably installed inside the cooling chamber (3), and both sensors (14) are temperature sensors (14).

7. The split-type circulating cooling structure for the spindle box of a Swiss-type lathe according to claim 1, characterized in that: The inlet spiral guide plate (5) is arranged with a large pitch, and the outlet spiral guide plate (6) is arranged with a small pitch. The inlet spiral guide plate (5) and the outlet spiral guide plate (6) rotate in opposite directions.

8. The split-type circulating cooling structure for the spindle box of a Swiss-type lathe according to claim 1, characterized in that: One end of the connecting ring (4) is fixedly welded with an annular water baffle (15), and the annular water baffle (15) is provided with several water guiding grooves. The other end of the connecting ring (4) is fitted with a sealing waterproof gasket (16), and the sealing waterproof gasket (16) is pressed into the connecting ring (4) with an interference fit.

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