A system, spindle and method for preventing liquid leakage from a cutting spindle

Abstract

The present invention provides a system, a spindle and a method for preventing a cutting spindle from leaking, which relates to the technical field of lathe spindle manufacturing, and solves the technical problem that cutting fluid easily leaks from the middle of the spindle, affecting the working efficiency and safety of the machine tool. The system for preventing a cutting spindle from leaking includes a chuck pull rod, a chuck, a chuck connecting plate, an expansion inner ring, an O-ring, an expansion outer ring, an expansion pressure plate, a sealing ring, a liquid collecting inclined surface and a water throwing hole. The present invention can be used for the lathe spindle of a CNC vertical lathe, solves the technical problem that cutting fluid easily leaks from the middle of the spindle, and improves the working efficiency and safety of the lathe.

Description

Technical Field

[0001] The invention relates to the technical field of lathe spindle manufacturing, and in particular to a system, a spindle and a method for preventing a cutting spindle from leaking liquid. Background Art

[0002] As we all know, cutting fluid is an industrial liquid used in metal cutting and grinding processes to cool and lubricate tools and workpieces. Usually, a cutting fluid spray device is set on the spindle to spray cold cutting fluid to achieve the purpose of cooling tools and cleaning workpieces during cutting.

[0003] When the CNC vertical lathe is in use, if the waterproof mechanism of the spindle is not well done, the cutting fluid will leak from the middle of the spindle. The chuck and the chuck pull rod on the spindle are connected by threads and can be sealed well, but the chuck pull rod and the pull rod below are connected by screws. According to structural requirements, there is a gap between the end faces and the end faces of the two. Therefore, the existing gap will cause the cutting fluid to leak from the middle position of the chuck to the middle of the spindle. In addition, the cutting fluid will also seep into the middle of the spindle through the gap of the chuck, affecting the operation of the spindle, reducing the working efficiency of the lathe, and increasing the risk of lathe operation. Summary of the invention

[0004] The purpose of the present invention is to provide a system for preventing the cutting spindle from leaking liquid. By arranging an expansion inner ring and an expansion pressure plate in the chuck rod, arranging a water-repelling hole and a liquid collecting slope on the chuck connecting plate, and arranging a sealing ring between the chuck connecting plate and the chuck rod, the technical problem that the cutting liquid easily leaks from the middle position of the chuck and the cutting liquid seeps through the gap of the chuck is solved. The preferred technical solution among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] The present invention provides a system chuck pull rod, chuck, chuck connecting plate, expansion inner ring, expansion pressure plate and sealing ring for preventing liquid leakage of a cutting spindle; wherein:

[0007] Optionally or preferably, the inner expansion ring is installed inside the chuck pull rod;

[0008] Optionally or preferably, the expansion pressure plate is installed above the expansion inner ring;

[0009] Optionally or preferably, an expansion outer ring is installed between the expansion pressure plate and the expansion inner ring;

[0010] Optionally or preferably, a groove is provided on the inner expansion ring, and an O-ring is installed in the groove;

[0011] Optionally or preferably, the chuck connection plate is further provided with a liquid collecting slope;

[0012] Optionally or preferably, the chuck connecting plate is provided with 2 to 5 sealing ring grooves, and the sealing ring is installed between the sealing ring groove and the chuck pull rod;

[0013] Optionally or preferably, the chuck connecting plate is further provided with 3 to 6 water-shedding holes.

[0014] Optionally or preferably, the diameter of the O-ring is greater than the depth of the groove.

[0015] Optionally or preferably, the expansion inner ring and the expansion pressure plate are connected via screws.

[0016] Optionally or preferably, a loosening screw hole for loosening the expansion inner ring and the expansion pressure plate is further provided at the center position of the expansion inner ring and the expansion pressure plate.

[0017] Optionally or preferably, the number of the sealing ring grooves is 2.

[0018] Optionally or preferably, the number of the water-shedding holes is 3.

[0019] Optionally or preferably, the thickness of the sealing ring is greater than the depth of the sealing ring groove (8-1).

[0020] Optionally or preferably, the angles between each of the water-spinning holes are equal.

[0021] Based on the above technical solution, the following technical effects can be produced:

[0022] A system for preventing a cutting spindle from leaking is provided in an embodiment of the present invention, and is suitable for situations where the cutting fluid of the spindle leaks from the middle of the spindle during lathe processing. A system for preventing a cutting spindle from leaking is provided in an embodiment of the present invention by setting an expansion inner ring and an expansion pressure plate in the chuck pull rod. After the expansion system is expanded, it has a sealing effect, and cooperates with the sealing effect of the O-ring to achieve double sealing, thereby blocking the leakage path of the cutting fluid. In addition, a water-spraying hole and a liquid collecting slope are provided on the chuck connecting plate, and a sealing ring is provided between the chuck connecting plate and the chuck pull rod, thereby preventing the cutting fluid from seeping through the gap of the chuck. The cooperation of the two solves the technical problem that the cutting fluid easily leaks from the middle of the spindle.

[0023] The present invention provides a spindle for preventing cutting fluid leakage, including the above-mentioned system for preventing cutting fluid leakage from the cutting spindle. By arranging the above-mentioned system for preventing cutting fluid leakage from the spindle on the spindle, it is prevented that the cutting fluid leaks into the middle of the spindle and affects the operation and safety of the spindle.

[0024] The present invention also provides a system and method for preventing leakage of a cutting spindle, including arranging the above-mentioned system for preventing leakage of a cutting spindle on the spindle. By arranging the above-mentioned system for preventing leakage of a cutting spindle on the spindle, an interference fit is achieved between the expansion inner ring and the chuck pull rod to block the leakage path of the cutting fluid and avoid the cutting fluid from seeping through the gap of the chuck, thereby solving the technical problem that the cutting fluid easily leaks from the middle of the spindle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 is a structural diagram of an embodiment of the present invention;

[0027] Figure 2 A partial structural diagram of an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of Embodiment B of the present invention;

[0029] Figure 4 It is a cross-sectional schematic diagram of the C of the embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of D in Embodiment 1 of the present invention;

[0031] Figure 6 It is a cross-sectional schematic diagram of A in Embodiment 1 of the present invention;

[0032] In the figure: 1. chuck pull rod; 2. chuck; 3. chuck connecting plate; 4. expansion inner ring; 4-1. groove; 4-2. loosening screw hole; 5. O-ring; 6. expansion outer ring; 7. expansion pressure plate; 8. sealing ring; 8-1. sealing ring groove; 9. liquid collecting slope; 10. water throwing hole. DETAILED DESCRIPTION

[0033] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0034] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0035] like Figure 1-6 As shown:

[0036] The present invention provides a system for preventing a cutting spindle from leaking liquid, comprising a chuck pull rod 1, a chuck 2, a chuck connecting plate 3, an expansion inner ring 4 and an expansion pressure plate 7; wherein:

[0037] The inner expansion ring 4 is installed inside the chuck pull rod 1;

[0038] The expansion pressure plate 7 is installed above the expansion inner ring 4;

[0039] An expansion outer ring 6 is installed between the expansion pressure plate 7 and the expansion inner ring 4;

[0040] The inner expansion ring 4 is provided with a groove 4-1, and an O-ring 5 is installed in the groove 4-1;

[0041] The chuck connection plate 3 is also provided with a liquid collecting slope 9;

[0042] The chuck connecting plate 3 is provided with 2 to 5 sealing ring grooves 8-1, and the sealing ring 8 is installed between the sealing ring groove 8-1 and the chuck pull rod 1;

[0043] The chuck connecting plate 3 is also provided with 3 to 6 water-shedding holes 10 .

[0044] As an optional implementation, the diameter of the O-ring 5 is greater than the depth of the groove 4 - 1 , so that the O-ring achieves an interference fit with the inner wall of the chuck pull rod and the bottom of the ring groove of the expansion inner ring 4 .

[0045] As an optional implementation, the expansion inner ring 4 and the expansion pressure plate 7 are connected by screws, so that the expansion outer ring 6 is fixed to the expansion inner ring 4 .

[0046] As an optional implementation, a loosening screw hole 4-2 for loosening the expansion inner ring 4 and the expansion pressure plate 7 is also opened at the center position of the expansion inner ring 4 and the expansion pressure plate 7, and this screw hole is used when loosening.

[0047] As an optional implementation, the number of the sealing ring grooves 8-1 is 2.

[0048] As an optional implementation, the number of the water-shedding holes 10 is 3.

[0049] As an optional implementation, the thickness of the sealing ring 8 is greater than the depth of the sealing ring groove 8 - 1 , ensuring an interference fit between the sealing ring 8 and the chuck pull rod 1 and the chuck connecting plate 3 without any gap.

[0050] As an optional implementation, the angles between each of the water-shedding holes 10 are equal.

[0051] As an optional implementation, a sealing ring 8 is added between the chuck connecting plate 3 and the chuck pull rod 1 for sealing, and a double sealing ring structure is adopted to better prevent leakage of cutting fluid.

[0052] As an optional embodiment, the liquid collecting slope 9 enables the cutting fluid to be collected at the periphery of the cavity in the middle of the chuck connecting plate 3 .

[0053] As an optional implementation, three water-shedding holes 10 are arranged around the disc connecting disc 3, so as to discharge the cutting fluid collected by the chuck connecting disc 3 out of the spindle.

[0054] The present invention also provides a spindle for preventing liquid leakage from a cutting spindle, comprising arranging the above-mentioned system for preventing liquid leakage from a cutting spindle on a spindle of a machine tool.

[0055] The present invention also provides a method for preventing a cutting spindle from leaking fluid, comprising arranging the above-mentioned system for preventing a cutting spindle from leaking fluid on a machine tool cutting spindle to prevent cutting fluid from leaking into the middle of the spindle and affecting the working efficiency of the spindle and the safety of the machine tool.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included.

Claims

1. A system for preventing liquid leakage from a cutting spindle, characterized in that: It comprises a chuck pull rod (1), a chuck (2), a chuck connecting plate (3), an expansion inner ring (4), an expansion pressure plate (7) and a sealing ring (8), wherein: The inner expansion ring (4) is installed inside the chuck pull rod (1); The expansion pressure plate (7) is installed above the expansion inner ring (4); An expansion outer ring (6) is installed between the expansion pressure plate (7) and the expansion inner ring (4); The expansion inner ring (4) is provided with a groove (4-1), and an O-ring (5) is installed in the groove (4-1); The chuck connection plate (3) is also provided with a liquid collecting slope (9); The chuck connecting plate (3) is provided with 2 to 5 sealing ring grooves (8-1), and the sealing ring (8) is installed between the sealing ring groove (8-1) and the chuck pull rod (1); The chuck connection plate (3) is also provided with 3 to 6 water-shedding holes (10); The expansion inner ring (4) and the expansion pressure plate (7) are connected via screws, and a loosening screw hole (4-2) for loosening the expansion inner ring (4) and the expansion pressure plate (7) is provided at the center of the expansion inner ring (4) and the expansion pressure plate (7).

2. A system for preventing liquid leakage from a cutting spindle according to claim 1, characterized in that: The diameter of the O-ring (5) is greater than the depth of the groove (4-1).

3. A system for preventing liquid leakage from a cutting spindle according to claim 1, characterized in that: The number of the sealing ring grooves (8-1) is 2.

4. A system for preventing liquid leakage from a cutting spindle according to claim 3, characterized in that: The number of the water-shedding holes (10) is 3.

5. A system for preventing liquid leakage from a cutting spindle according to claim 4, characterized in that: The thickness of the sealing ring (8) is greater than the depth of the sealing ring groove (8-1).

6. A system for preventing liquid leakage from a cutting spindle according to claim 5, characterized in that: The included angles between each of the water-shedding holes (10) are equal.

7. A spindle for preventing liquid leakage from a cutting spindle, characterized in that: A system for preventing liquid leakage from a cutting spindle comprising any one of claims 1-6.

8. A method for preventing liquid leakage from a cutting spindle, characterized in that: The invention comprises arranging a system for preventing liquid leakage of a cutting spindle as described in any one of claims 1 to 6 on a machine tool spindle.

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