Mechanism capable of adjusting meshing angle of worm gear

Abstract

The utility model relates to a mechanism capable of adjusting the meshing angle of a worm gear, which belongs to the technical field of gear detection, the meshing angle of the worm gear is adjusted by driving a rotating platform through a motor, and the rotating platform has high positioning accuracy and is matched with an angle encoder of the motor, so that the meshing angle of the worm gear is accurately adjusted. And the worm gear is clamped through a high-precision worm gear shaft system, so that the mechanism can be directly applied to the double-sided meshing instrument of which the meshing angle of the worm gear needs to be adjusted.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear detection. Background Art

[0002] Traditional worm gear assemblies all have a meshing angle of 90°, so when performing double meshing detection, only products that can detect a meshing angle of 90° are required. Therefore, the meshing angle does not need to be adjusted for double-sided meshing detection of the worm wheel. However, with the technological upgrading of worm gear assemblies, the meshing angle of the worm wheel needs to be adjusted during detection, so the existing worm gear clamping mechanism for worm gear double meshing detection cannot meet the requirements. Utility Model Content

[0003] The utility model is to solve the above problems and further designs a mechanism capable of adjusting the meshing angle of a worm gear which can be used in the double-sided meshing of a worm gear.

[0004] It is characterized in that the rotating platform is fixed on the fixing frame, the shaft fixing seat is connected to the rotor of the rotating platform, the worm gear shaft is fixed to the upper end of the shaft fixing seat, and the motor is connected to the rotating platform. The rotation of the rotating platform is driven by the motor to drive the rotation of the worm gear shaft. The rotation angle can be controlled within ±45°, which can meet the adjustment of all worm gear meshing angles. The positioning accuracy of the rotating platform itself can reach within 10″, and the high-precision adjustment of the worm gear meshing angle can be achieved in conjunction with the motor's own angle encoder. The worm gear shaft is a shaft with high rotation accuracy. Its composition includes a fixed seat, a worm gear sleeve passing through the inner hole of the fixed seat, a radial steel ball placed between the fixed seat and the worm gear sleeve, and an interference fit between the fixed seat and the worm gear sleeve is achieved through the radial steel ball, so that the rotation accuracy of the worm gear sleeve is within 3μm, and the end face steel ball is placed between the upper end of the fixed seat and the lower end of the worm gear sleeve step, which reduces the friction resistance when the worm gear sleeve rotates, and the worm wheel directly passes into the inner hole of the worm gear sleeve, and the upper pressure cover is fixed at the upper end of the fixed seat. When the worm wheel is pulled out, the worm gear sleeve can be prevented from being pulled out by the blocking of the upper pressure cover.

[0005] Compared with the prior art, the utility model has the following beneficial effects: the motor drives the rotating platform to rotate, thereby driving the worm gear to rotate, thereby achieving the adjustment of the worm gear meshing angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is a front view of a mechanism of the patent that can adjust the worm gear meshing angle.

[0007] Figure 2 This is a front view of a mechanism of the patent that can adjust the worm gear meshing angle.

[0008] Figure 3 This is a cross-sectional view of a worm gear shaft system in a mechanism of the patent that can adjust the worm gear meshing angle. DETAILED DESCRIPTION

[0009] A mechanism capable of adjusting the meshing angle of a worm gear comprises: a fixing frame 1, a motor 2, a rotating platform 3, a worm gear shaft system 4, a shaft system fixing seat 5, a worm gear 401, a worm gear shaft sleeve 402, an upper pressure cover 403, an end face steel ball 404, a radial steel ball 405, and a fixing seat 406.

[0010] The invention is characterized in that the rotating platform 3 is fixed on the fixing frame 1, the shaft fixing seat 5 is connected to the rotor of the rotating platform 3, the worm gear shaft system 4 is fixed to the upper end of the shaft fixing seat 5, and the motor 2 is connected to the rotating platform 3. The rotation of the rotating platform 3 is driven by the motor 2, thereby driving the rotation of the worm gear shaft system 4. The rotation angle can be controlled within ±45°, which can meet the adjustment of all worm gear meshing angles, and the positioning accuracy of the rotating platform 3 itself can reach within 10″, and the high-precision adjustment of the worm gear meshing angle can be achieved in conjunction with the angle encoder of the motor 2 itself. The worm gear shaft system 4 is a shaft system with high rotation accuracy, and its composition includes a fixing seat 406, a worm gear sleeve 402 inserted in the fixing seat In the inner hole of 406, the radial steel ball 405 is placed between the fixed seat 406 and the worm gear sleeve 402, and the interference fit between the fixed seat 406 and the worm gear sleeve 402 is achieved through the radial steel ball 405, so that the rotation accuracy of the worm gear sleeve 402 is within 3μm, and the end face steel ball 404 is placed between the upper end of the fixed seat 406 and the lower end of the step of the worm gear sleeve 402, which reduces the friction resistance when the worm gear sleeve 402 rotates, and the worm wheel 401 directly penetrates into the inner hole of the worm gear sleeve 402, and the upper pressure cover 403 is fixed on the upper end of the fixed seat 406. When the worm wheel 401 is pulled out, the upper pressure cover 403 can prevent the worm gear sleeve 402 from being pulled out.

[0011] The process of using a mechanism with adjustable worm gear meshing angle is to install a worm gear sleeve 402 of appropriate size, install and fix the pressure cover 403, the motor 2 automatically drives the rotating platform 3 to rotate to the set meshing angle, install the worm gear 401 into the worm gear sleeve 402, and then start the detection.

Claims

1. A mechanism capable of adjusting the meshing angle of a worm gear, characterized in that The rotating platform (3) is fixed on the fixing frame (1), the shaft fixing seat (5) is connected to the rotor of the rotating platform (3), the worm gear shaft system (4) is fixed to the upper end of the shaft fixing seat (5), and the motor (2) is connected to the rotating platform (3). The rotation of the rotating platform (3) is driven by the motor (2), thereby driving the rotation of the worm gear shaft system (4). The rotation angle is controlled within ±45° to meet the adjustment of all worm gear meshing angles. The positioning accuracy of the rotating platform (3) itself reaches within 10″. In conjunction with the angle encoder of the motor (2) itself, high-precision adjustment of the worm gear meshing angle is achieved. The worm gear shaft system (4) is a shaft system with high rotation accuracy, which includes a fixing seat (406), a worm gear shaft sleeve (402) inserted into the fixing seat (406), and a worm gear shaft sleeve (402) inserted into the fixing seat (406). In the hole, a radial steel ball (405) is placed between a fixed seat (406) and a worm gear sleeve (402), and an interference fit between the fixed seat (406) and the worm gear sleeve (402) is achieved through the radial steel ball (405), so that the rotation accuracy of the worm gear sleeve (402) is within 3 μm. An end face steel ball (404) is placed between the upper end of the fixed seat (406) and the lower end of the step of the worm gear sleeve (402), so that the friction resistance of the worm gear sleeve (402) when rotating is reduced. The worm wheel (401) directly penetrates into the inner hole of the worm gear sleeve (402), and the upper pressure cover (403) is fixed to the upper end of the fixed seat (406). When the worm wheel (401) is pulled out, the upper pressure cover (403) blocks the worm gear sleeve (402) from being pulled out.

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