Waterproof machining center spindle

Abstract

The utility model discloses a waterproof type machining center main shaft which comprises a shell, a shaft core, a broach rod, a tool holder, a front cover and a water throwing ring, the shaft core is coaxially arranged in the shell, the broach rod is coaxially arranged in the shaft core, the tool holder coaxially connected with the broach rod is arranged at one end of the shaft core, the front cover tightly attached to the peripheral face of the shaft core is arranged on the end face of the shell, and the water throwing ring is arranged on the front cover. And a water throwing ring for shielding a gap between the front cover and the shaft core is arranged on the peripheral surface of the shaft core. By means of the mode, according to the waterproof machining center main shaft, due to the fact that the water throwing ring which is of the U-shaped structure and provided with the flying wings is additionally arranged at the water seepage point of the gap between the front cover and the shaft core, and the sealing ring with the skirt edge is embedded in the water throwing ring, the double-layer waterproof purpose is achieved, the sealing performance of the main shaft is remarkably improved, and the service life of the main shaft is remarkably prolonged.

Description

Technical Field

[0001] The utility model relates to the field of machining center spindles, in particular to a waterproof machining center spindle. Background Art

[0002] During the high-speed rotation of the machining center spindle, the splashing water flow will seep in from the gap between the shaft core and the front cover. Since a certain gap needs to be reserved between the high-speed rotating shaft core and the stationary front cover, it is impossible to achieve sealing by filling. The existing technology usually opens a water retaining groove on the outer peripheral surface of the shaft core, and uses the water retaining groove to temporarily store the water seeping into the gap. When the spindle stops, the water is dried passively. Due to the limited water storage capacity of the water retaining groove, there is a problem of further penetration caused by saturated water storage. Content of the Utility Model

[0003] The main technical problem to be solved by the utility model is to provide a waterproof machining center spindle. Since a water throwing ring with a C-shaped structure and wings is added at the water seepage point of the gap between the front cover and the shaft core, and a sealing ring with a skirt is inlaid in the water throwing ring, the purpose of double-layer waterproofing is realized, and the sealing performance and service life of the spindle are significantly improved.

[0004] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a waterproof machining center spindle, including a housing, a shaft core, a draw bar, a tool holder, a front cover, and a water throwing ring. The shaft core is coaxially arranged in the housing, the draw bar is coaxially arranged in the shaft core, a tool holder coaxially connected to the draw bar is arranged at one end of the shaft core, the front cover closely attached to the outer peripheral surface of the shaft core is arranged on the end face of the housing, and the water throwing ring covering the gap between the front cover and the shaft core is arranged on the outer peripheral surface of the shaft core.

[0005] In a preferred embodiment of the utility model, the water throwing ring is composed of a hoop and wings formed integrally. The hoop is clamped to the shaft core, and the wings obliquely overlap on the end face of the front cover.

[0006] In a preferred embodiment of the utility model, the hoop is C-shaped and inlaid with a sealing ring. The sealing ring is provided with a skirt formed integrally, and the skirt is elastically pressed against the end face of the front cover.

[0007] In a preferred embodiment of the utility model, a positioning key for clamping the tool holder is installed on the end face of the shaft core, an outer cover closely attached to the outer peripheral surface of the positioning key is installed on the end face of the front cover, and a relief groove matching the water throwing ring is opened on the outer cover.

[0008] The beneficial effect of the utility model is: the waterproof machining center spindle provided by the utility model realizes the purpose of double-layer waterproofing since a water throwing ring with a C-shaped structure and wings is added at the water seepage point of the gap between the front cover and the shaft core, and a sealing ring with a skirt is inlaid in the water throwing ring, and significantly improves the sealing performance and service life of the spindle. Brief Description of the Drawings

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:

[0010] Figure 1 is the overall structure diagram of a waterproof spindle of a machining center according to the present invention;

[0011] Figure 2 is the enlarged partial structure diagram of the sealing ring of a waterproof spindle of a machining center according to the present invention;

[0012] Figure 3 is the enlarged partial structure diagram of the water throwing ring of a waterproof spindle of a machining center according to the present invention. Detailed Description of the Embodiments

[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0014] As Figure 1-3 shown, the embodiments of the present invention include:

[0015] A waterproof spindle of a machining center, comprising a housing 1, a shaft core 2, a broach rod 3, a tool holder 4, a front cover 5, and a water throwing ring 6. The shaft core 2 is coaxially arranged in the housing 1, the broach rod 3 is coaxially arranged in the shaft core 2, a tool holder 4 coaxially connected to the broach rod 3 is arranged at one end of the shaft core 2, a front cover 5 closely attached to the outer peripheral surface of the shaft core 2 is arranged on the end surface of the housing 1, and a water throwing ring 6 covering the gap between the front cover 5 and the shaft core 2 is arranged on the outer peripheral surface of the shaft core 2.

[0016] Among them, the water throwing ring 6 is composed of a hoop 7 and a wing 8 integrally formed. The hoop 7 is clamped to the shaft core 2, and the wing 8 obliquely abuts against the end surface of the front cover 5.

[0017] Furthermore, the hoop 7 is in a U shape and is inlaid with a sealing ring 9. The sealing ring 9 is provided with a skirt 10 integrally formed, and the skirt 10 is elastically pressed against the end surface of the front cover 5.

[0018] Further, a positioning key 11 for clamping the tool handle 4 is installed on the end face of the shaft core 2, an outer cover 12 that closely adheres to the outer peripheral surface of the positioning key 11 is installed on the end face of the front cover 5, and a relief groove 13 for mating with the water throwing ring 6 is provided on the outer cover 12.

[0019] The shaft core 2 is hollow, the broach rod 3 is coaxially and hermetically inserted into the shaft core 2 through a number of disc springs 14, an O-ring is arranged between the broach rod 3 and the inner wall of the shaft core 2, a broach claw 15 is arranged at the front end of the broach rod 3, a handle 16 for connecting the broach claw 15 is arranged at the end of the tool handle 4, the shaft core 2 is coaxially placed in the housing 1 through a number of bearings 17, an outer spacer 18 is arranged on the inner wall of the housing 1, an inner spacer 19 is arranged on the outer wall of the shaft core 2, the outer spacer 18 and the inner spacer 19 are stacked between each adjacent bearing 17, a pulley 20 is coaxially installed at the tail of the shaft core 2, and a locking nut 21 for pressing the pulley 20 is installed at the tail of the shaft core 2. When rotating at high speed, water is likely to enter at the joint between the shaft core 2 and the front cover 5. To solve this problem, the water throwing ring 6 can block the water flow splashing onto the front cover 5, and the blocked water flow is thrown away along the flying wing 8. To further solve the problem of water entering the shaft core 2 from the gap between the flying wing 8 and the front cover 5, the clamp 7 part of the water throwing ring 6 is designed in a U-shape, and the sealing ring 9 can be embedded in the groove of the U-shape. The sealing ring 9 extends along the direction of the flying wing 8 to form an integrally molded skirt 10. The skirt 10 is made of elastic rubber material, and the front cover 5 is pressed by the material elasticity to block the splashing water flow.

[0020] In summary, the present invention provides a waterproof machining center spindle. Since a water throwing ring 6 with a U-shaped structure and a flying wing 8 is added at the water seepage point of the gap between the front cover 5 and the shaft core 2, and a sealing ring 9 with a skirt 10 is embedded in the water throwing ring 6, the purpose of double-layer waterproofing is achieved, and the sealing performance and service life of the spindle are significantly improved.

[0021] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A waterproof machining center spindle, characterized in that: It includes a housing, a shaft core, a broach rod, a tool handle, a front cover, and a water throwing ring. A shaft core is coaxially arranged inside the housing. A broach rod is coaxially arranged inside the shaft core. A tool handle coaxially connected to the broach rod is arranged at one end of the shaft core. A front cover tightly attached to the outer peripheral surface of the shaft core is arranged on the end face of the housing. A water throwing ring that shields the gap between the front cover and the shaft core is arranged on the outer peripheral surface of the shaft core.

2. The waterproof machining center spindle according to claim 1, characterized in that: The water throwing ring is composed of an integrally formed clamp and a wing. The clamp is clamped to the shaft core, and the wing obliquely abuts against the end face of the front cover.

3. The waterproof machining center spindle according to claim 2, characterized in that: The clamp is in a U shape and is inlaid with a sealing ring. The sealing ring is provided with an integrally formed skirt, and the skirt is elastically pressed against the end face of the front cover.

4. The waterproof machining center spindle according to claim 1, characterized in that: A positioning key for clamping the tool handle is installed on the end face of the shaft core. An outer cover tightly attached to the outer peripheral surface of the positioning key is installed on the end face of the front cover. The outer cover is provided with a relief groove matching the water throwing ring.

Images