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Core shaft anti-overturning unit
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An anti-overturning and mandrel technology, which is used in grinding machine parts, metal processing equipment, grinding/polishing equipment, etc. The effect of overturning ability
Pending Publication Date: 2019-10-11
MAANSHAN HENGLIDA MACHINE BLADE +1
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[0008] The purpose of the present invention is to overcome the problem in the prior art that the mandrel continues to deform after a small amount of bending deformation, and provides a mandrel anti-overturning unit; The gap between the bearings is filled with lubricating oil, and the annular protrusion can move in a certain space, and the lubricating oil still exerts force on the side of the annular protrusion, so as to avoid further bending deformation of the mandrel and effectively ensure the stability of the mandrel operation , so as to ensure the machining accuracy
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Embodiment 1
[0069] A mandrel anti-overturning unit of this embodiment, combined with figure 1 , the grinding wheel 2100 and the drive unit installed on the mandrel 1000, wherein the grinding wheel 2100 is installed on the front end of the mandrel 1000, specifically, combined figure 1 , figure 2 and Figure 8 , the grinding wheel 2100 is installed on the grinding wheelflange 2200, and the grinding wheel 2100 is fixed on the grinding wheelflange 2200 through the grinding wheel gland 2300; the front end of the mandrel 1000 passes through the grinding wheel flange 2200, and is connected with the The front end of the mandrel 1000 is threaded. The driving unit in this embodiment is arranged in the middle of the mandrel 1000, and is used to drive the mandrel 1000 to rotate, thereby driving the grinding wheel 2100 to rotate, and to grind the workpiece.
[0070] The driving unit in this embodiment includes a rotor 9100 and a stator 9200, such as figure 2 As shown, the rotor 9100 is set in ...
Embodiment 2
[0102] The mandrel anti-overturning unit of this embodiment is basically the same as that of embodiment 1, further: in this embodiment, the high-speed rotation of the mandrel 1000 is realized through lubricating oil, and the lubricating oil will penetrate into other parts, causing oil leakage and affecting Therefore, in order to avoid this problem, in this embodiment, an air seal element is respectively provided at the two ends of the contact between the lubricating oil and the mandrel 1000, such as the front radial bearing 7100 and the rear radial bearing 7200, such as figure 1 As shown, since there is lubricating oil at the annular protrusion 1100 in this embodiment, in order to save costs, as figure 2 As shown, in this embodiment, a No. 1 sealing ring 4100 is provided at the end of the thrust bearing 5000 close to the grinding wheel 2100, and a No. 2 sealing ring 4200 is provided at the end of the front radial bearing 7100 away from the grinding wheel 2100; the rear diamete...
Embodiment 3
[0114] A mandrel anti-overturning unit of this embodiment is basically the same as that of Embodiment 2, further: the clamp between the inclined surface of the trapezoidal inner chamber on the sealing ring in this embodiment and the central axis of the respective corresponding sealing ring The angle is 15°-75°.
[0115] In this embodiment, the included angle between the inclined surface and the central axis of each corresponding sealing ring may be 15°, 20°, 30°, 45°, 60° or 75°.
[0116] It is worth noting that the inclined surface plays a guiding role in the whole process, and also plays a role of pressurization, guiding the gas flowing into the inner cavity of the sealing ring to the annular groove. The smaller the angle between the axes, the greater the guiding effect of the inclined surface, which is more conducive to guiding the gas into the annular groove; but the smaller the angle between the inclined surface and the central axis of the sealing ring, the greater the di...
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Abstract
The invention discloses a core shaft anti-overturning unit and belongs to the technical field of core shaft design. The core shaft anti-overturning unit comprises an annular protrusion arranged at oneend of a core shaft, a thrust bearing and a front radial bearing. The thrust bearing and the front radial bearing are located on two sides of the annular protrusion respectively. An adjustment disk is arranged outside the annular protrusion in a sleeving manner. The thickness of the adjustment disk is larger than that of the annular protrusion, one end face of the adjustment disk is connected with an end face of the thrust bearing, and the other end face of the adjustment disk is connected with an end face of the front radial bearing. Gaps between the annular protrusion and the thrust bearing, the adjustment disk and the front radial bearing are filled with lubricating oil. According to the core shaft anti-overturning unit, the gaps between the annular protrusion and the thrust bearing, the adjustment disk and the front radial bearing are filled with the lubricating oil; the annular protrusion can move in a certain space; force is still applied to the side face of the annular protrusion by the lubricating oil; bending deformation is prevented from further occurring in the core shaft; operational stability of the core shaft is effectively guaranteed; and thus machining accuracy isguaranteed.
Description
technical field [0001] The invention relates to the technical field of mandrel design, more specifically, to a mandrel anti-overturning unit. Background technique [0002] High-precision machiningmachine tools have nano-level precision machining capabilities, technology-intensive, high added value, and strong driving effect. They are an important symbol to measure the level of a country's equipment manufacturing industry. At present, the high-precision machining machine tool industry has become a new growth point of the manufacturing industry, and plays an important role in many high-tech fields such as aerospace, military industry, precision instruments, new energy, and medical equipment. In these fields, the further research and development of many high value-added products and components and industrial upgrading and development depend to a large extent on the technological development of high-precision machining tools. [0003] Existing high-precision machine tools are ...
Claims
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Application Information
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