Worm gear clamping fixture
Through the design of the shaft sleeve and the worm gear interference fit and the height adjustment gasket, the problems of the worm gear clamping fixture in installation eccentricity and throat diameter reference control are solved, and high-precision worm gear measurement and clamping effect are achieved.
Patent Information
- Application Number
- CN202422357303.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-26
AI Technical Summary
Existing worm gear clamps are prone to eccentricity during installation, which affects measurement accuracy and is difficult to accurately control the height of the worm gear throat diameter to the end surface reference, resulting in poor measurement results.
The design of interference fit between the shaft sleeve and the worm gear is adopted, combined with the height adjustment gasket and the steel ball holding sleeve, to achieve the precise fit between the worm gear and the shaft sleeve, and adjust the height of the gasket to control the position of the throat diameter of the worm gear to the end surface reference by grinding.
It improves the rotation accuracy and measurement accuracy of the worm gear, ensures precise control of the throat diameter to the end surface reference of the worm gear, and improves the overall functional perfection of the clamping fixture.
Smart Images
Figure CN223211166U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tooling fixtures, and more specifically, to a worm gear clamping fixture. Background Art
[0002] Existing worm gear clamping fixtures typically directly place the worm gear bearing seat directly into the shaft sleeve for clearance fit. This method will cause installation eccentricity, which will directly affect the accuracy of worm gear testing. Alternatively, the worm gear can be clamped directly using a three-jaw chuck. However, the repeatability of the three-jaw chuck itself is greater than 0.02mm, which will also directly affect the measurement accuracy. In addition, traditional clamping solutions, whether using the shaft sleeve or the three-jaw chuck, cannot accurately control the height from the worm gear throat diameter to the end face reference. The height from the worm gear throat diameter to the end face reference directly affects the measurement results, resulting in poor overall performance. Accordingly, the present utility model proposes a worm gear clamping fixture. Utility Model Content
[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a worm gear clamping fixture.
[0004] In order to solve the above technical problems, the purpose of the present invention is achieved as follows: the present invention involves a worm gear clamping fixture, including a shaft system with an axis extending vertically up and down, a shaft sleeve is coaxially arranged on the shaft system, the bottom of the shaft sleeve is fixed to the shaft system, and a height adjustment gasket is provided on the top, a pull rod extending out of the shaft sleeve is coaxially arranged inside the shaft sleeve, the bottom of the pull rod is fixed to the shaft system, and a nut is threadedly connected to the top, and a steel ball retaining sleeve is embedded in the shaft sleeve and is sleeved on the outside of the pull rod.
[0005] In summary, the present invention has the following beneficial effects:
[0006] 1. The worm gear and the shaft sleeve are interference fit through the steel ball retaining sleeve, which improves the rotation accuracy of the worm gear.
[0007] 2. The height of the height adjustment gasket can be precisely ground and measured, so that the position of the worm gear throat diameter to the end face reference can be accurately controlled. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION
[0009] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the preferred embodiments of the present invention are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the patent claims of the present invention. Based on the examples in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.
[0010] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.
[0011] Example 1
[0012] See also Figure 1 As shown, the worm gear clamping fixture involved in this embodiment includes a shaft system 1 with an axis extending vertically up and down, a shaft sleeve 2 is coaxially arranged on the shaft system 1, the bottom of the shaft sleeve 2 is fixed to the shaft system 1, and a height adjustment gasket 3 is provided on the top, a pull rod 4 extending out of the shaft sleeve is coaxially arranged inside the shaft sleeve 2, the bottom of the pull rod 4 is fixed to the shaft system 1, and a nut 5 is threadedly connected to the top, and a steel ball retaining sleeve 6 is embedded in the shaft sleeve 2 and is sleeved on the outside of the pull rod.
[0013] In this embodiment, the sleeve 2 is fixed on the shaft system 1, and the sleeve 2 can rotate with the shaft system 1. The height adjustment gasket 3 is fixed on the upper end face of the sleeve 2. The height adjustment gasket 3 can be ground, which can effectively control the distance from the worm gear throat diameter 101 to the end face reference, thereby improving the accuracy of the measurement. The worm gear end face reference 102 of the worm gear 100 is placed on top of the height adjustment gasket 3, and the worm gear radial reference 103 of the worm gear 100 is passed through the sleeve 2. The steel ball retaining sleeve 6 is placed between the sleeve 2 and the worm gear radial reference 103, thereby achieving an interference fit between the worm gear 100 and the sleeve 2, thereby improving the clamping accuracy of the worm gear. The lower end of the pull rod 4 is tightened to the center of the upper end face of the shaft system 1, and the nut 5 is tightened to the upper end of the pull rod 4. By tightening the nut 5, the worm gear 100 can be fixed to the sleeve 2, thereby achieving the rotation of the worm gear 100 when the shaft system 1 rotates.
[0014] The worm gear clamping fixture involved in the utility model realizes interference fit between the worm gear and the shaft sleeve through the steel ball retaining sleeve, thereby improving the rotation accuracy of the worm gear; and the height of the height adjustment gasket can be precisely ground and the height can be accurately measured, thereby accurately controlling the position of the worm gear throat diameter to the end face reference, and the overall function is complete and practical.
[0015] Unless otherwise specified, in the present invention, if there are terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicating orientation or positional relationship, they are based on the orientation or positional relationship actually shown and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, they can combine the embodiments and understand the specific meanings of the above terms according to specific circumstances.
[0016] Unless otherwise specified or limited, the terms "disposed," "connected," and "connected" in this utility model should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.
[0017] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.
Claims
1. A worm gear clamping fixture, comprising a shaft system with an axis extending vertically up and down, characterized in that: A shaft sleeve is coaxially arranged on the shaft system, the bottom of the shaft sleeve is fixed to the shaft system, and a height adjustment gasket is provided on the top. A pull rod extending out of the shaft sleeve is coaxially arranged inside the shaft sleeve, the bottom of the pull rod is fixed to the shaft system, and a nut is threadedly connected to the top. A steel ball retaining sleeve is embedded in the shaft sleeve and is sleeved on the outside of the pull rod.