Machine tool spindle cooling liquid leakage detection device

Abstract

The utility model discloses a machine tool spindle cooling liquid leakage detection device. The device comprises a liquid collecting tank arranged outside a machine tool spindle cooling pipeline, a flange sleeve used for collecting cooling liquid is arranged on the lower portion of the liquid collecting tank, a floater column capable of floating up and down is arranged in a center hole of the flange sleeve, and a contact piece is arranged on the upper portion of the floater column. And an inductive switch for detecting the movement of the liquid collecting tank is arranged beside the contact piece on the liquid collecting tank. The device has the advantages that the detection device is triggered through buoyancy of leaked cooling liquid, the detection purpose is achieved in the mode that the inductive switch detects movement of the contact piece, the structural principle is simple, induction is sensitive, and alarm is timely; the upper part of the liquid collecting tank is provided with the extending tank plate, so that dangerous points where leakage possibly occurs on the cooling pipeline are surrounded integrally, the collecting range of leaked cooling liquid is enlarged, and the detection range is larger.

Description

Technical Field

[0001] This utility model relates to a leakage detection device, specifically a machine tool spindle coolant leakage detection device. Background Technology

[0002] Coolant is used in machine tool cutting operations to reduce cutting temperature, thereby reducing thermal deformation, improving machining accuracy, and reducing tool wear. While the machine tool spindle rotates, the cooling pipes connected to it via rotary joints remain relatively stationary. However, machine tool vibration, aging seals, and coolant corrosion can all lead to coolant leakage, resulting in insufficient coolant supply, hydraulic oil contamination, environmental pollution, and safety hazards for operators. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a machine tool spindle coolant leakage detection device with a large detection range and timely alarm.

[0004] To solve the above-mentioned technical problems, the present invention provides a machine tool spindle coolant leakage detection device, which includes a collection tank disposed outside the machine tool spindle cooling pipe. A flange sleeve for collecting coolant is disposed at the lower part of the collection tank. A float column capable of floating up and down is disposed in the central hole of the flange sleeve. A contact piece is disposed on the upper part of the float column. An inductive switch for detecting its movement is disposed on the collection tank next to the contact piece.

[0005] The flange sleeve has a flow channel for coolant to flow through, and a plug is provided at the bottom to prevent coolant from flowing out.

[0006] The bottom of the float column has a bottom groove that communicates with the flow channel, and the top is a stepped shaft; the contact piece has a through hole, is sleeved on the stepped shaft and fixed by a snap ring, and the stepped shaft is provided with a snap ring groove for the snap ring to be inserted.

[0007] The liquid collection tank includes a bottom surface, four wall surfaces disposed on the bottom surface, and an extension trough plate disposed on the upper part of the four wall surfaces; the bottom surface has a through hole, and the flange sleeve is disposed in the through hole; the inductive switch is disposed on the wall surface.

[0008] A support is provided below the bottom surface.

[0009] The wall surface is also provided with clamping components for clamping and fixing the cooling pipes.

[0010] Drainage holes are also provided on the wall surface.

[0011] The float column is made of polystyrene.

[0012] The advantages of this utility model are: the detection device is triggered by the buoyancy of the leaking coolant, and the detection purpose is achieved by detecting the movement of the contact piece by an inductive switch. The structure and principle are simple, the sensing is sensitive, and the alarm is timely. An extension plate is provided on the upper part of the collection tank, which surrounds the dangerous points where the cooling pipe may leak, increases the collection range of the leaked coolant, and makes the detection range larger. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention;

[0014] Figure 2 This is the right view of the present invention;

[0015] Figure 3 This is a partial front sectional view of the present invention;

[0016] Figure 4 This is a perspective view of the contact piece of this utility model. Detailed Implementation

[0017] The machine tool spindle coolant leakage detection device of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] As shown in the figure, the machine tool spindle coolant leakage detection device of this utility model includes a collection tank 1 installed outside the machine tool spindle cooling pipe via a bracket 13 fixed to the machine tool. The collection tank 1 includes an inclined bottom surface 10, four wall surfaces 11 on the bottom surface, and an extension plate 12 inclined outwardly on the upper part of the four wall surfaces. The inclined bottom surface 10 allows accumulated coolant to collect to one side, and the inclined extension plate 12 increases the collection range of leaked coolant. A through hole is opened at the inclined end of the bottom surface 10, and a flange sleeve 2 for collecting coolant is installed in the through hole. The upper part of the flange sleeve 2 has a groove for initial collection of coolant, and the inside has a flow channel 6 for coolant flow. A plug 7 is provided at the bottom to prevent coolant from flowing out. A cylindrical float column 3, capable of floating up and down, is installed in the central hole of flange sleeve 2. The float column 3 is made of polystyrene with a density of only 0.33 g / cm³, less than the density of the coolant. It has a clearance fit with the central hole of flange sleeve 2. A bottom groove 8, communicating with the flow channel 6, is opened at the bottom of the float column 3, and the top is a stepped shaft. Vent holes are opened inside the float column 3 to prevent back pressure from residual gas in the bottom groove 8 from obstructing the flow of coolant. A contact piece 4 is sleeved on the stepped shaft and fixed by a retaining ring 9. A retaining ring groove for the retaining ring 9 to engage is provided on the stepped shaft. An inductive switch 5, used to detect the movement of the contact piece 4, is installed on the wall surface 11 next to it, with a certain gap between them as the sensing range. The inductive switch 5 is connected to an external control system.

[0019] Since the cooling pipes are installed at the end of the machine tool spindle via a rotary joint, and their housing has rotational freedom, a clamping component 14 for clamping and fixing the cooling pipes is also provided on the wall surface 11. This includes clamping blocks connected to the inner wall of the liquid collection tank 1 by screws, clamping from both sides to fix the cooling pipes to the liquid collection tank 1. A drain hole 15 is also provided at the bottom of the wall surface 11 to prevent excessive collection of coolant.

[0020] In actual operation, when coolant leaks, it flows through the plates of the collecting tank 1, eventually collecting at the flange sleeve 2. It then flows through the flow channel 6 to the bottom of the flange sleeve 2 and enters the float column bottom groove 8 at the bottom of the float column 3. The buoyancy F generated by the float column 3 under the action of the coolant... 浮 =ρgh 液 ×Πd 2 / 4, when F 浮 >m 柱 When g, the float column 3 floats up, causing the contact piece 4 to move away from the induction switch 5. The induction switch 5 sends a signal to the control system, thereby issuing an alarm or stopping the machine tool.

[0021] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A machine tool spindle coolant leakage detection device, characterized in that: The system includes a liquid collection tank (1) located outside the cooling pipe of the machine tool spindle. A flange sleeve (2) for collecting coolant is provided at the lower part of the liquid collection tank (1). A float column (3) that can float up and down is provided in the center hole of the flange sleeve (2). A contact piece (4) is provided at the upper part of the float column (3). An inductive switch (5) for detecting its movement is provided on the liquid collection tank (1) next to the contact piece (4).

2. The machine tool spindle coolant leakage detection device according to claim 1, characterized in that: The flange sleeve (2) has a flow channel (6) for coolant to flow through, and a plug (7) is provided at the bottom to prevent coolant from flowing out.

3. The machine tool spindle coolant leakage detection device according to claim 2, characterized in that: The bottom of the float column (3) is provided with a float column bottom groove (8) that communicates with the flow channel (6), and the top is a stepped shaft; the contact piece (4) is provided with a through hole, which is sleeved on the stepped shaft and fixed by a snap ring (9). The stepped shaft is provided with a snap ring groove for the snap ring (9) to be inserted.

4. The machine tool spindle coolant leakage detection device according to claim 1, 2 or 3, characterized in that: The liquid collection tank (1) includes a bottom surface (10), four wall surfaces (11) disposed on the bottom surface, and an extension groove plate (12) disposed on the upper part of the four wall surfaces; the bottom surface (10) has a through hole, and the flange sleeve (2) is disposed in the through hole; the induction switch (5) is disposed on the wall surface (11).

5. The machine tool spindle coolant leakage detection device according to claim 4, characterized in that: A support (13) is provided below the bottom surface (10).

6. The machine tool spindle coolant leakage detection device according to claim 4, characterized in that: The wall surface (11) is also provided with a clamping component (14) for clamping and fixing the cooling pipes.

7. The machine tool spindle coolant leakage detection device according to claim 4, characterized in that: The wall surface (11) is also provided with a drain hole (15).

8. The machine tool spindle coolant leakage detection device according to claim 1, 2 or 3, characterized in that: The float column (3) is made of polystyrene.

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