Mixed water cooling machine body structure for main shaft

Abstract

The utility model discloses a mixed water cooling machine body structure for a main shaft, which relates to the technical field of main shaft cooling and comprises a front bearing chamber, a machine shell is arranged on one side of the front bearing chamber, the machine shell is arranged in a machine tool sleeve, a cooling water inlet is arranged on the front bearing chamber, and a circulating straight water channel is arranged in the front bearing chamber. A spiral water channel is arranged on the outer circle of the machine shell, and cooling water is discharged from the cooling water outlet through the cooling water inlet, the circulating straight water channel and the spiral water channel. The utility model has the advantages of simple structure and reasonable design, adopts the main shaft body structure with double cooling modes, adopts the mixed water cooling of the spiral water channel at the motor part and the straight water channel at the bearing position, can solve the problem that the rigidity of the main shaft is weakened due to insufficient wall thickness of the casing, and can enable the cooling water to be closer to the bearing, so that the bearing is more fully cooled; and the service lives of the bearing and the motor are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of spindle cooling, in particular to a mixed water-cooled body structure for a spindle. Background Art

[0002] The spindle mechanism is the core component of the machining center. During the operation of the machining center, the spindle needs to be cooled to ensure safe and reliable operation of the machining center. Insufficient cooling often reduces the life of the spindle. The horizontal machining center is generally slender in shape, with high power and heat generation. During the high-speed operation of the electric spindle, the heat inside the motor housing is difficult to effectively dissipate in a limited space, which can easily cause the electric spindle to deform and affect the service life of the motor. In the prior art, cooling holes are usually machined on the motor housing for cooling, which will cause the housing wall thickness to be insufficient and the spindle rigidity to be weakened. Summary of the invention

[0003] The utility model aims to solve the above technical problems and provides a body structure of a main shaft with mixed water cooling.

[0004] In order to achieve the above technical objectives and meet the above technical requirements, the technical solution adopted by the utility model is: a body structure for mixed water cooling of a main shaft, characterized in that: it includes a front bearing chamber, a casing is arranged on one side of the front bearing chamber, the casing is arranged in the sleeve of a machine tool, a cooling water inlet is arranged on the front bearing chamber, a circulating straight water channel is arranged in the front bearing chamber, a spiral water channel is arranged on the outer circle of the casing, and the cooling water is discharged from the cooling water outlet through the cooling water inlet, the circulating straight water channel and the spiral water channel.

[0005] Preferably, the circulating straight water channel includes a cooling water channel arranged in the circumferential direction of the front bearing chamber, and the cooling water channel is connected to the spiral water channel through a radial water groove and an axial water groove.

[0006] Preferably, a front cover is provided on one side of the front bearing chamber, and a water baffle is provided on the other side for closing the cooling water channel.

[0007] Preferably, the cooling water inlet is arranged on the outer circle of the front bearing chamber flange.

[0008] Compared with the traditional structure, the utility model has the following beneficial effects: simple structure, reasonable design, suitable for slender high-speed electric spindles with high power and heat generation that need to be fully cooled, adopts a spindle body structure with dual cooling methods, the motor part adopts spiral water channels, and the bearing position adopts mixed water cooling with straight water channels, which can not only solve the problem of weakened spindle rigidity due to insufficient casing wall thickness, but also allow the cooling water to be closer to the bearings, so that the bearings can be more fully cooled, thereby increasing the service life of the bearings and the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model;

[0010] In the figure: 1. front cover, 2. front bearing chamber, 21. axial water groove, 22. radial water groove, 3. cooling water inlet, 4. water baffle, 5. machine casing, 51. spiral water channel, 6. machine tool sleeve, 7. cooling water outlet, 8. circulating straight water channel. DETAILED DESCRIPTION

[0011] The utility model is further described below.

[0012] Refer to the attached Figure 1 , a body structure for mixed water cooling of a spindle, characterized in that: it includes a front bearing chamber 2, a casing 5 is arranged on one side of the front bearing chamber 2, the casing 5 is arranged in a machine tool sleeve 6, a cooling water inlet 3 is arranged on the front bearing chamber 2, a circulating straight water channel 8 is arranged in the front bearing chamber 2, a spiral water channel 51 is arranged on the outer circle of the casing 5, and the cooling water flows out from the cooling water outlet 7 through the cooling water inlet 3, the circulating straight water channel 8, and the spiral water channel 51.

[0013] In this preferred embodiment, the circulating straight water channel 8 includes a cooling water channel arranged in the circumferential direction of the front bearing chamber 2 , and the cooling water channel is connected to the spiral water channel 51 through the radial water groove 22 and the axial water groove 21 .

[0014] In this preferred embodiment, a front cover 1 is provided on one side of the front bearing chamber 2, and a water baffle 4 is provided on the other side for closing the cooling water channel to form an integral straight water circulation circuit.

[0015] In this preferred embodiment, the cooling water inlet 3 is arranged on the outer circle of the flange of the front bearing chamber 2.

[0016] During specific implementation, the front cover 1 and the water baffle 4 are connected to the front bearing chamber 2, and the casing 5 is integrally connected to the front cover 1, the front bearing chamber 2, and the water baffle 4, and is installed in the machine tool sleeve 6 through the flange hole on the front bearing chamber 2. The cooling water passes through the cooling water inlet 3, that is, the outer circle inlet of the flange of the front bearing chamber 2, and circulates a full circle in the circumferential direction through the circulating straight water channel 8 in the front bearing chamber 2, and then enters the casing 5 through the radial water groove 22 and the axial water groove 21, and then flows out from the single spiral water channel 51 thereon to the cooling water outlet 7, forming a body structure with mixed water cooling of circulating straight water channels and spiral water channels, which fully cools the bearings and motors and improves the service life. It is worthy of application and promotion on high-speed electric spindles.

[0017] The above embodiments of the present invention are merely examples to clearly illustrate the present invention, but are not intended to limit the protection scope of the present invention. All equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A main shaft hybrid water cooling body structure, characterized in that: The invention comprises a front bearing chamber (2), a housing (5) is arranged on one side of the front bearing chamber (2), the housing (5) is arranged in a machine tool sleeve (6), a cooling water inlet (3) is arranged on the front bearing chamber (2), a circulating straight water channel (8) is arranged in the front bearing chamber (2), a spiral water channel (51) is arranged on the outer circle of the housing (5), and cooling water is discharged from a cooling water outlet (7) through the cooling water inlet (3), the circulating straight water channel (8), and the spiral water channel (51); the circulating straight water channel (8) comprises a cooling water channel arranged in the circumferential direction of the front bearing chamber (2), the cooling water channel and the spiral water channel (51) are connected through a radial water groove (22) and an axial water groove (21); a front cover (1) is arranged on one side of the front bearing chamber (2), and a water baffle (4) is arranged on the other side for closing the cooling water channel; the cooling water inlet (3) is arranged on the outer circle of the flange of the front bearing chamber (2).

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