Mechanical structure for realizing water discharge at center of main shaft

Abstract

The utility model discloses a mechanical structure for realizing water discharge at the center of a main shaft in the technical field of numerical control machine tools, which comprises a main shaft body, a shaft core is fixedly connected with a fixing sleeve through a first screw, an unclamping ring penetrates through the fixing sleeve to be connected with a broach mechanism, and the unclamping ring and the broach mechanism are fixedly connected through a second screw. Sealing rings are arranged at the rear end of the broach mechanism and an inner hole of the fixing sleeve, protruding structures are fixedly connected to one side of the broach ring, the through groove holes correspond to the protruding structures in number and shape in a one-to-one mode, a radial gap exists between the through groove holes and the protruding structures, the through groove holes are fixedly connected with the shaft core through the fixing sleeve, high rotation precision can be achieved, and the broach ring and the fixing sleeve supplement each other in structure. Force transmission is achieved, and therefore reciprocating motion of the broach mechanism is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of CNC machine tool technology, specifically relating to a mechanical structure for realizing water outlet at the center of the spindle. Background Technology

[0002] The spindle center cooling system, also known as a high-pressure filtration system, is an important auxiliary device in CNC machine tools. Its main function is to spray coolant or cutting fluid through the spindle center bore to cool, lubricate, and clean the machining area. The high-speed spray of coolant quickly removes cutting heat, lowers the temperature of the machining area, prevents workpiece thermal deformation, reduces tool wear, and improves machining efficiency and workpiece surface quality.

[0003] Existing mechanical structures for water outlet at the center of the spindle still have some defects. Most spindle cores are hollow structures with a broaching mechanism inside. The broaching mechanism needs to reciprocate inside the core, resulting in a certain gap between the broaching mechanism and the core. The rotational accuracy of the broaching mechanism is poor. The mounting hole of the rotary joint at the rear end of the fixed sleeve must have high rotational accuracy to ensure the normal operation and service life of the rotary joint. Therefore, we propose a mechanical structure for realizing water outlet at the center of the spindle. Utility Model Content

[0004] The purpose of this invention is to provide a mechanical structure for realizing water outlet at the center of the spindle, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mechanical structure for realizing water outlet at the center of a spindle, comprising a spindle body, a water channel provided on the inner side of the spindle body, a shaft core provided on the outer side of the spindle body, a fixing sleeve provided on one side of the shaft core, a first screw provided on one side of the fixing sleeve, a cutting ring provided at one end of the spindle body, a second screw provided on one side of the cutting ring, a pull-out mechanism provided on both sides of the water channel, a sealing ring provided on one side of the pull-out mechanism, a rotary joint mounting hole provided at one end of the spindle body, a protruding structure provided on one side of the cutting ring, and a through slot provided on one side of the fixing sleeve.

[0006] Preferably, the shaft core and the fixing sleeve are fixedly connected by a first screw.

[0007] Preferably, the cutting ring passes through the fixing sleeve and is connected to the cutting mechanism, and the two are fixedly connected by a second screw.

[0008] Preferably, the rear end of the puller mechanism and the inner hole of the fixing sleeve are provided with sealing rings.

[0009] Preferably, a protruding structure is fixedly connected to one side of the blade ring, and the number and shape of the through slots correspond one-to-one with the protruding structure, with a radial gap between them.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. High rotational accuracy can be achieved by connecting and fixing the shaft core with a fixing sleeve;

[0012] 2. The cutter ring and the fixed sleeve structure complement each other to realize the transmission of force, thereby realizing the reciprocating motion of the cutter mechanism;

[0013] 3. A sealing ring is provided between the rear end of the cutter mechanism and the fixed sleeve to prevent high-pressure water leakage and ensure stable pressure. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0015] Figure 2 For the present utility model Figure 1 Schematic diagram of structure A in the middle;

[0016] Figure 3 This is a schematic diagram of the blade ring structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the fixing sleeve structure of this utility model.

[0018] In the diagram: 1. Spindle body; 2. Shaft core; 3. Fixing sleeve; 4. First screw; 5. Tool break ring; 6. Second screw; 7. Water channel; 8. Tool puller mechanism; 10. Sealing ring; 11. Rotary joint mounting hole; 12. Protruding structure; 13. Through slot. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4This utility model provides a technical solution: a mechanical structure for realizing water outlet at the center of a spindle, including a spindle body 1, a water channel 7 on the inner side of the spindle body 1, a shaft core 2 on the outer side of the spindle body 1, a fixing sleeve 3 on one side of the shaft core 2, a first screw 4 on one side of the fixing sleeve 3, a cutter ring 5 at one end of the spindle body 1, a second screw 6 on one side of the cutter ring 5, a cutter pulling mechanism 8 on both sides of the water channel 7, a sealing ring 10 on one side of the cutter pulling mechanism 8, a rotary joint mounting hole 11 at one end of the spindle body 1, a protruding structure 12 on one side of the cutter ring 5, and a through slot 13 on one side of the fixing sleeve 3.

[0021] Specifically, the shaft core 2 and the fixed sleeve 3 are fixedly connected by the first screw 4. The cutter ring 5 passes through the fixed sleeve 3 and is connected to the cutter mechanism 8. The two are fixedly connected by the second screw 6. The rear end of the cutter mechanism 8 and the inner hole of the fixed sleeve 3 are provided with a sealing ring 10. A protruding structure 12 is fixedly connected to one side of the cutter ring 5. The number and shape of the through slots 13 correspond one-to-one with the protruding structure 12, and there is a radial gap between them.

[0022] In this embodiment, the fixed sleeve 3 is connected to the shaft core 2, and the two are fastened with the first screw 4. The surface of the fixed sleeve 3 has multiple sets of through slots 13, and the number and shape correspond one-to-one with the end face protrusion structure 12 on the cutter ring 5. There is a radial gap between the two, and they can move relative to each other in the axial direction without interference. The cutter ring 5 passes through the fixed sleeve 3 and is connected to the cutter puller mechanism 8. The two are fastened with the second screw 6. External force is applied to the cutter ring 5 and then transmitted to the cutter puller mechanism 8, thereby realizing the reciprocating motion of the cutter puller mechanism 8. The rear end of the cutter puller mechanism 8 and the inner hole of the fixed sleeve 3 are provided with sealing rings 10 to prevent high-pressure water from leaking into the inside of the cutter puller mechanism 8 while ensuring that the high-pressure water has a stable pressure.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanical structure for implementing the center-outflow of the main shaft, comprising a main shaft body (1), characterized in that: The inner side of the main shaft body (1) is provided with a water channel (7), the outer side of the main shaft body (1) is provided with a shaft core (2), one side of the shaft core (2) is provided with a fixed sleeve (3), one side of the fixed sleeve (3) is provided with a first screw (4), one end of the main shaft body (1) is provided with a tool knocking ring (5), one side of the tool knocking ring (5) is provided with a second screw (6), both sides of the water channel (7) are provided with a tool knocking mechanism (8), one side of the tool knocking mechanism (8) is provided with a sealing ring (10), one end of the main shaft body (1) is provided with a rotary joint mounting hole (11), one side of the tool knocking ring (5) is provided with a convex structure (12), one side of the fixed sleeve (3) is provided with a through slot hole (13).

2. The mechanical structure for implementing the water outlet at the center of the main shaft according to claim 1, characterized in that: The shaft core (2) and the fixed sleeve (3) are fixedly connected through the first screw (4).

3. The mechanical structure for implementing the water outlet at the center of the main shaft according to claim 1, characterized in that: The tool knocking ring (5) is connected with the tool knocking mechanism (8) through the fixed sleeve (3), and the two are fixedly connected through the second screw (6).

4. The mechanical structure for implementing the water outlet at the center of the main shaft according to claim 1, characterized in that: The rear end of the tool knocking mechanism (8) and the inner hole of the fixed sleeve (3) are provided with the sealing ring (10).

5. The mechanical structure for implementing the water outlet at the center of the main shaft according to claim 1, characterized in that: One side of the tool knocking ring (5) is fixedly connected with the convex structure (12), the number and shape of the through slot hole (13) correspond to the convex structure (12) one by one, and there is a radial gap between the two.

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