Double circulation spindle cooling oil circuit structure of vertical machining center
By designing a dual-circulation spindle cooling oil circuit structure for a vertical machining center, and utilizing components such as pressure filters and oil distribution blocks to achieve dual circulation of the oil circuit, the cost problem caused by adding oil circuits in existing technologies is solved, and cooling and lubrication of the gearbox and spindle are achieved, thereby reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN JIR FINE MACHINERY
- Filing Date
- 2025-07-17
- Publication Date
- 2026-05-29
AI Technical Summary
When using a gearbox in a current vertical machining center, additional oil circuits are required, which increases costs. Furthermore, existing technologies make it difficult to implement a dual-circulation spindle cooling oil circuit structure to reduce costs.
A dual-circulation spindle cooling oil circuit structure for a vertical machining center was designed. Through the combination of a pressure filter, gearbox oil inlet connector, gearbox oil outlet connector, oil distributor, regulating valve, flow meter, spindle oil inlet interface, and spindle oil outlet interface, the oil circuit achieves dual circulation, providing cooling oil lubrication for both the gearbox and the spindle. The oil circuit is also recycled through an oil cooler.
It achieves cooling and lubrication of the gearbox and spindle, reduces oil circuit cooling costs, avoids the need for additional oil circuits, and improves the utilization efficiency of the oil circuits.
Smart Images

Figure CN224295403U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gearbox lubrication technology for machining centers, and in particular to a dual-circulation spindle cooling oil circuit structure for vertical machining centers. Background Technology
[0002] A vertical machining center is a machining center in which the spindle axis is set perpendicular to the worktable. It is mainly suitable for machining complex parts such as plates, discs, molds and small shells.
[0003] When using a gearbox in an existing vertical machining center, an additional oil circuit is required. Using two oil coolers or two sets of non-circulating oil coolers will undoubtedly increase costs. Therefore, a dual-circulation spindle cooling oil circuit structure that can reduce costs is needed. Utility Model Content
[0004] The main purpose of this invention is to provide a dual-circulation spindle cooling oil circuit structure for a vertical machining center, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A dual-circulation spindle cooling oil circuit structure for a vertical machining center includes a column, a spindle housing, and a gearbox housing. A pressure filter is fixedly connected to one side of the column. A gearbox oil inlet connector is fixedly connected to the top of one side of the gearbox housing, and a gearbox oil outlet connector is fixedly connected to the top of one side of the gearbox housing. An oil distribution block fixing bracket is fixedly connected to the upper surface of the spindle housing, and an oil distribution block is fixedly connected to the upper surface of the oil distribution block fixing bracket. An oil distribution block has an oil inlet on one side, and a regulating valve is fixedly connected to the upper surface of the oil distribution block. A flow meter is fixedly connected to the top of the regulating valve. A spindle is mounted on the lower surface of the spindle housing, and a spindle oil inlet is mounted on the outer surface of the spindle. A spindle oil outlet is mounted on the front of the spindle housing.
[0007] In order to achieve the effect of fixing the oil inlet and outlet, as a vertical machining center dual-circulation spindle cooling oil circuit structure of this utility model, a spindle housing is movably connected to one side of the column, and a gearbox is fixedly connected to the upper surface of the spindle housing.
[0008] In order to achieve the effect of dividing the oil circuit into two, as a vertical machining center dual-circulation spindle cooling oil circuit structure of this utility model, the upper surface of the oil distribution block is provided with a first oil outlet and the upper surface of the oil distribution block is provided with a second oil outlet.
[0009] In order to achieve the effect of connecting the oil inlet of the gearbox, as a vertical machining center dual-circulation spindle cooling oil circuit structure of this utility model, one end of the oil cooler outlet pipe is connected to the right end of the pressure filter through a pipe, the left end of the pressure filter is connected to the oil inlet of the oil distribution block through a pipe, and the top of the flow meter is connected to the gearbox oil inlet connector through a pipe.
[0010] To facilitate the return of oil through the two oil circuits, in this utility model of a dual-circulation spindle cooling oil circuit structure for a vertical machining center, one end of the gearbox oil outlet connector is connected to the oil suction port of the oil cooler via a pipe, and one end of the spindle oil outlet is connected to the oil return port of the oil cooler via a pipe.
[0011] In order to achieve the effect of connecting the oil inlet of the spindle box, as a dual-circulation spindle cooling oil circuit structure for a vertical machining center according to this utility model, the second oil outlet of the oil distribution block and the spindle oil inlet are connected by a pipe.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. This vertical machining center features a dual-circulation spindle cooling oil circuit structure. It includes a pressure filter, gearbox inlet and outlet connectors, an oil distributor, a regulating valve, a flow meter, a spindle inlet port, a spindle outlet port, an oil inlet, a first outlet, and a second outlet. The oil cooler outlet is connected to the right end of the pressure filter, and the left end of the pressure filter is connected to the oil distributor. The oil distributor splits the inlet oil into two outlet oil paths. The oil from this path enters the flow meter and flow regulating valve through the first outlet. The oil enters the gearbox through a pipe connected to the gearbox inlet connector, providing cooling oil lubrication. Another oil path connects to the spindle inlet port via a pipe from the second outlet, entering the spindle housing for spindle cooling. Oil exiting the gearbox returns to the oil cooler's suction port through a pipe from the gearbox outlet connector. After spindle use, the cooling oil returns to the oil cooler's return port through a pipe from the spindle outlet port. In this way, the two oil paths complete a cycle, simultaneously achieving the functions of spindle oil cooling and gearbox lubrication, while reducing oil cooling costs.
[0014] 2. The vertical machining center features a dual-circulation spindle cooling oil circuit structure. This structure includes an oil cooler, oil outlet pipe, pressure filter, regulating valve, and flow meter. The oil cooler supplies cooling oil, the pressure filter filters impurities in the oil circuit to prevent damage to the gearbox and spindle, the flow meter detects the presence of oil in the oil passages to prevent dry grinding and damage to the gearbox, and the flow regulating valve adjusts the flow rate of the oil. Attached Figure Description
[0015] Figure 1This is a schematic diagram of a dual-circulation spindle cooling oil circuit structure for a vertical machining center according to an embodiment of the present invention.
[0016] Figure 2 This is a schematic diagram of the isometric structure of the column in a dual-circulation spindle cooling oil circuit structure of a vertical machining center according to an embodiment of the present invention;
[0017] Figure 3 This is a bottom-view isometric structural diagram of the gearbox in a dual-circulation spindle cooling oil circuit structure of a vertical machining center according to an embodiment of the present invention.
[0018] Figure 4 This invention relates to a dual-circulation spindle cooling oil circuit structure for a vertical machining center. Figure 3 Enlarged structural diagram at point B;
[0019] Figure 5 This is a top-view isometric structural diagram of the gearbox in a dual-circulation spindle cooling oil circuit structure of a vertical machining center according to an embodiment of the present invention.
[0020] Figure 6 This is an isometric structural diagram of the oil distribution block in a dual-circulation spindle cooling oil circuit structure of a vertical machining center according to an embodiment of the present invention;
[0021] Figure 7 This is a bottom-view isometric structural diagram of a dual-circulation spindle cooling oil circuit structure for a vertical machining center according to an embodiment of the present invention;
[0022] Figure 8 This invention relates to a dual-circulation spindle cooling oil circuit structure for a vertical machining center. Figure 7 A magnified structural diagram at point C.
[0023] In the diagram: 1. Column; 2. Spindle housing; 3. Gearbox housing; 7. Pressure filter; 10. Gearbox oil inlet connector; 11. Gearbox oil outlet connector; 12. Oil distributor block fixing bracket; 13. Oil distributor block; 14. Regulating valve; 15. Flow meter; 16. Spindle oil inlet interface; 17. Spindle oil outlet interface; 18. Oil inlet; 19. First oil outlet; 20. Second oil outlet. Detailed Implementation
[0024] 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.
[0025] Example
[0026] like Figure 1-8 As shown, a dual-circulation spindle cooling oil circuit structure for a vertical machining center includes a column 1, a spindle housing 2, and a gearbox housing 3. A pressure filter 7 is fixedly connected to one side of the column 1. A gearbox oil inlet connector 10 is fixedly connected to the top of one side of the gearbox housing 3, and a gearbox oil outlet connector 11 is fixedly connected to the top of one side of the gearbox housing 3. An oil distribution block fixing bracket 12 is fixedly connected to the upper surface of the spindle housing 2, and an oil distribution block 13 is fixedly connected to the upper surface of the oil distribution block fixing bracket 12. An oil inlet 18 is provided on one side of the oil distribution block 13, and a regulating valve 14 is fixedly connected to the upper surface of the oil distribution block 13. A flow meter 15 is fixedly connected to the top of the regulating valve 14. A spindle is provided on the lower surface of the spindle housing 2, and a spindle oil inlet 16 is provided on the outer surface of the spindle. A spindle oil outlet 17 is provided on the front of the spindle housing 2.
[0027] In practical use, the oil cooler is fixed to the ground with the following components: pressure filter 7, gearbox oil inlet connector 10, gearbox oil outlet connector 11, oil distributor 13, regulating valve 14, flow meter 15, spindle oil inlet interface 16, spindle oil outlet interface 17, oil inlet 18, first oil outlet 19, and second oil outlet 20. The oil cooler's oil outlet is connected to the right end of the pressure filter 7, and the left end of the pressure filter 7 is connected to the oil distributor 13. The function of the oil distributor 13 is to divide one oil inlet into two oil outlets. The first oil outlet 19 of the oil distributor 13 is fixedly connected to the flow meter 15 and the regulating valve 14. The oil in this oil path flows from the first outlet... Oil enters the flow meter 15 and flow regulating valve 14 through the oil port 19, and then connects to the gearbox oil inlet connector 10 through the pipeline, entering the gearbox body 3 to provide cooling oil lubrication for the gearbox. Another oil path connects to the spindle oil inlet connector 16 through the pipeline from the second oil outlet 20, entering the spindle housing 2 to cool the spindle. Oil from the gearbox body 3 exits through the gearbox oil outlet connector 11 and returns to the oil cooler suction port through the pipeline. After the spindle is used, the cooling oil returns to the oil cooler return port through the pipeline from the spindle oil outlet connector 17. In this way, the two oil paths complete the circulation, achieving both spindle oil cooling and gearbox lubrication, and reducing the cost of oil path cooling.
[0028] In this embodiment, a spindle housing 2 is movably connected to one side of the column 1, and a gearbox 3 is fixedly connected to the upper surface of the spindle housing 2.
[0029] In practical use, the oil inlet and outlet connectors are fixed by setting up the gearbox 3 and the spindle box 2.
[0030] In this embodiment, the upper surface of the oil distribution block 13 is provided with a first oil outlet 19 and the upper surface of the oil distribution block 13 is provided with a second oil outlet 20.
[0031] In practical use, the oil circuit is divided into two by setting the oil distribution block 13.
[0032] In this embodiment, one end of the oil cooler outlet pipe is connected to the right end of the pressure filter 7 via a pipe, the left end of the pressure filter 7 is connected to the oil inlet 18 of the oil separator 13 via a pipe, and the top of the flow meter 15 is connected to the gearbox oil inlet connector 10 via a pipe.
[0033] In practical use, the gearbox oil inlet circuit is connected by setting the oil distribution block 13 and the gearbox oil inlet connector 10.
[0034] In this embodiment, one end of the gearbox oil outlet connector 11 is connected to the oil inlet of the oil cooler via a pipe, and one end of the spindle oil outlet port 17 is connected to the oil return port of the oil cooler via a pipe.
[0035] In practical use, the connection between the oil cooler's suction port and return port facilitates the return of oil from both circuits.
[0036] In this embodiment, the second oil outlet 20 of the oil distribution block 13 and the main shaft oil inlet 16 are connected by a pipe.
[0037] In practical use, the oil distribution block 13 and the spindle oil inlet interface 16 are used to connect the oil inlet circuit of the spindle box.
[0038] Working principle: The oil outlet of the oil cooler is connected to the right end of the pressure filter 7, and the left end of the pressure filter 7 is connected to the oil distributor 13. The function of the oil distributor 13 is to divide one oil inlet into two oil outlets. The first oil outlet 19 of the oil distributor 13 is fixedly connected to the flow meter 15 and the regulating valve 14. The oil in this oil path enters the flow meter 15 and the flow regulating valve 14 from the first oil outlet 19, and then enters the gearbox inlet connector 10 through the pipeline, providing cooling oil lubrication for the gearbox. The other oil path connects to the spindle inlet interface 16 through the pipeline from the second oil outlet 20, and enters the spindle housing 2 to cool the spindle. The oil in the gearbox housing 3 exits from the gearbox outlet connector 11 and returns to the oil cooler suction port through the pipeline. After the spindle is used, the cooling oil returns from the spindle outlet interface 17 through the pipeline to the oil cooler return port. In this way, the two oil paths complete the circulation.
[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A dual-circulation spindle cooling oil circuit structure for a vertical machining center, comprising a column (1), a spindle housing (2), and a gearbox housing (3), characterized in that: A pressure filter (7) is fixedly connected to one side of the column (1), a gearbox oil inlet connector (10) is fixedly connected to the top of one side of the gearbox body (3), a gearbox oil outlet connector (11) is fixedly connected to the top of one side of the gearbox body (3), an oil distribution block fixing bracket (12) is fixedly connected to the upper surface of the spindle housing (2), an oil distribution block (13) is fixedly connected to the upper surface of the oil distribution block fixing bracket (12), an oil inlet (18) is opened on one side of the oil distribution block (13), a regulating valve (14) is fixedly connected to the upper surface of the oil distribution block (13), a flow detector (15) is fixedly connected to the top of the regulating valve (14), a spindle is provided on the lower surface of the spindle housing (2), a spindle oil inlet interface (16) is provided on the outer surface of the spindle, and a spindle oil outlet interface (17) is provided on the front of the spindle housing (2).
2. The dual-circulation spindle cooling oil circuit structure for a vertical machining center according to claim 1, characterized in that: A spindle housing (2) is movably connected to one side of the column (1), and a gearbox (3) is fixedly connected to the upper surface of the spindle housing (2).
3. The dual-circulation spindle cooling oil circuit structure for a vertical machining center according to claim 1, characterized in that: The upper surface of the oil distribution block (13) is provided with a first oil outlet (19) and the upper surface of the oil distribution block (13) is provided with a second oil outlet (20).
4. The dual-circulation spindle cooling oil circuit structure for a vertical machining center according to claim 1, characterized in that: One end of the oil cooler outlet pipe is connected to the right end of the pressure filter (7) via a pipe, the left end of the pressure filter (7) is connected to the oil inlet (18) of the oil separator (13) via a pipe, and the top of the flow meter (15) is connected to the gearbox oil inlet connector (10) via a pipe.
5. The dual-circulation spindle cooling oil circuit structure for a vertical machining center according to claim 1, characterized in that: One end of the gearbox oil outlet connector (11) is connected to the oil suction port of the oil cooler via a pipe, and one end of the spindle oil outlet interface (17) is connected to the oil return port of the oil cooler via a pipe.
6. The dual-circulation spindle cooling oil circuit structure for a vertical machining center according to claim 1, characterized in that: The second oil outlet (20) of the oil distribution block (13) and the main shaft oil inlet (16) are connected by a pipe.