A spinning roller machining precision inspection tool
Patent Information
- Application Number
- CN202522240065.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-10-23
AI Technical Summary
然而，旋压辊轮中心孔为锥面结构，涉及锥面同轴度、母线直线度、端面平面度等多维精度指标，常规检测手段因无法模拟“辊轮与旋压机装配时的锥面胀紧状态”，导致检测基准与实际装配基准偏差，精度判定易失真
本实用新型有效解决了旋压辊轮检测的技术痛点，通过与旋压机辊轮安装轴参数一致的固定芯轴，精准复刻实际装机时的锥面胀紧状态，搭配双轴承组保障的高精度旋转基准，消除常规检测因基准偏差导致的精度判定失真问题，确保锥面同轴度、端面平面度等多维指标检测结果与装机适配性直接对应；同时，实现辊轮离线检测，无需依赖旋压机进行装机调试，提前拦截精度不合格辊轮，避免反复拆卸调整占用设备工时、延长产线节拍的情况，显著降低对旋压工序产能的影响；另外，检测过程可直接关联辊轮加工环节，便于及时反向追溯加工误差源，解决传统模式下仅在装配端发现问题、整改效率低下的弊端，减少返工成本与人力损耗。
Smart Images
Figure CN224872991U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wheel hub manufacturing technology, and in particular to a tooling for inspecting the machining accuracy of spinning rollers. Background Technology
[0002] In the wheel manufacturing industry, driven by the trend of automotive lightweighting, the casting-spinning process has seen a continuous increase in its application due to its advantages in balancing wheel lightweighting and structural strength. As a core wear component in this process, the spinning roller's machining accuracy directly determines the wheel forming quality and production efficiency. However, the center hole of the spinning roller has a conical structure, involving multiple precision indicators such as conical coaxiality, generatrix straightness, and end face flatness. Conventional testing methods cannot simulate the "conical surface tension state during roller-spinning machine assembly," leading to deviations between the testing benchmark and the actual assembly benchmark, and making accuracy judgments prone to distortion.
[0003] Currently, roller accuracy verification relies solely on the "installation and commissioning" method. After installing the roller on the spinning machine, a trial run is conducted to determine its compliance. If problems such as uneven upper surface or large rotational runout occur, repeated disassembly, adjustment, or even rework is required. This not only consumes equipment time and extends the production line cycle time, but also reduces production capacity. Furthermore, since problems are only discovered at the assembly end, it is impossible to trace the source of processing errors in a timely manner, resulting in low efficiency in quality rectification.
[0004] Therefore, there is an urgent need to develop an offline testing fixture that can simulate the real assembly environment of a spinning machine, which is a technical problem that needs to be solved at present. Utility Model Content
[0005] The purpose of this invention is to address the above-mentioned problems by providing a tooling for inspecting the machining accuracy of spinning rollers, so as to accurately quantify and verify the accuracy of the rollers and prevent "problematic rollers" from flowing into the assembly process and causing machine losses.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A tooling for inspecting the machining accuracy of spinning rollers includes a base, on which a fixed mandrel is rotatably connected. The external dimensions, taper parameters, and positioning reference of the fixed mandrel are consistent with the mounting shaft of the spinning roller. The base is also provided with a measuring component, which includes a fixed seat connected to the base, and a dial indicator is connected to the fixed seat via a universal joint.
[0007] Preferably, the fixed mandrel is fixedly connected to the central shaft, the central shaft is rotatably connected to the base, the base is equipped with a bearing seat, the bearing seat has a stepped mounting cavity, the upper part of the stepped mounting cavity is adapted to a tapered roller bearing, and the central shaft is assembled on the inner ring of the tapered roller bearing.
[0008] Preferably, the lower part of the stepped mounting cavity of the bearing housing is adapted to a deep groove ball bearing, and the lower end of the central shaft is assembled to the inner ring of the deep groove ball bearing.
[0009] Preferably, the central shaft and the inner rings of the tapered roller bearing and the deep groove ball bearing are both interference fit, and the bearing housing is axially limited at both ends by bearing pressure plates.
[0010] Preferably, the fixing base is fixedly connected to the base by magnetic adsorption or T-slot, so that the fixed position of the base can be adjusted radially.
[0011] Preferably, the base is ground to a flatness of ≤0.02mm and is rigidly connected to the testing platform by fastening bolts. The beneficial effects of this utility model are as follows: This invention effectively solves the technical pain points of spinning roller inspection. By using a fixed mandrel with the same mounting shaft parameters as the spinning machine roller, it accurately replicates the conical surface tension state during actual installation. Combined with a high-precision rotational reference ensured by a double bearing assembly, it eliminates the accuracy judgment distortion caused by reference deviation in conventional inspection, ensuring that the test results of multi-dimensional indicators such as conical surface coaxiality and end face flatness directly correspond to the machine compatibility. At the same time, it realizes offline roller inspection, eliminating the need for installation and debugging on the spinning machine, intercepting unqualified rollers in advance, avoiding repeated disassembly and adjustment that occupy equipment time and extend production line cycle time, and significantly reducing the impact on the spinning process capacity. In addition, the inspection process can be directly linked to the roller processing link, facilitating timely reverse tracing of the processing error source, solving the drawbacks of the traditional mode of only finding problems at the assembly end and the low efficiency of rectification, reducing rework costs and manpower losses. Attached Figure Description
[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0015] In the diagram: 10--base; 11--central shaft; 12--bearing housing; 13--tapered roller bearing; 14--deep groove ball bearing; 15--bearing pressure plate; 16--T-slot; 20--fixed spindle; 30--measuring assembly; 31--fixed base; 32--universal linkage; 33--dial indicator. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0017] like Figure 1-2 As shown, a fixture for inspecting the machining accuracy of a spinning roller includes a base 10. The base 10 is ground to a flatness of ≤0.02mm and is rigidly connected to a testing platform via fastening bolts, effectively preventing vibration interference during the testing process. A fixed mandrel 20 is rotatably connected to the base 10. The external dimensions, conical surface parameters, and positioning reference of the fixed mandrel 20 are consistent with the roller mounting shaft of the spinning machine to simulate the actual mounting state of the roller. A measuring component 30 is also provided on the base 10. The measuring component 30 includes a fixed seat 31 connected to the base 10. A dial indicator 33 is connected to the fixed seat 31 via a universal joint 32, supporting the three-dimensional angle adjustment of the dial indicator 33 so that the dial indicator 33 contacts flexibly fit the surface of the roller being measured.
[0018] During inspection, the roller is fitted onto the conical surface of the fixed mandrel 20, and assembly is completed using the self-positioning property of the conical surface. A depth gauge is used to measure the distance between the upper surface of the roller and the upper end face of the fixed mandrel 20 to verify the dimensional accuracy of the roller's conical hole and the parallelism of its end faces. The dial indicator 33 is adjusted so that its contact lightly touches the measured surface of the roller, ensuring stable contact. The central shaft 11 is manually driven to rotate, causing the roller to rotate synchronously. The runout data of the dial indicator 33 is recorded, and the data is compared with the design tolerance to determine the roller's processing qualification. Defective products are promptly returned for rework or scrapped to prevent them from flowing into the assembly process and causing losses.
[0019] Preferably, the fixed mandrel 20 is fixedly connected to the central shaft 11, and the central shaft 11 is rotatably connected to the base 10. Specifically, a bearing seat 12 is mounted on the base 10, and a stepped mounting cavity is formed inside the bearing seat 12. A tapered roller bearing 13 is adapted to the upper part of the stepped mounting cavity, and the central shaft 11 is mounted on the inner ring of the tapered roller bearing 13. Utilizing the line contact characteristics of the tapered roller bearing 13, it bears the radial and axial loads of the central shaft 11, providing stable mechanical support for the simulated assembly of the rollers.
[0020] Preferably, the lower part of the stepped mounting cavity of the bearing housing 12 is adapted to a deep groove ball bearing 14, and the lower end of the central shaft 11 is fitted to the inner ring of the deep groove ball bearing 14 to assist in radial support, reduce radial runout of the central shaft 11, and compensate for the frictional resistance of the tapered roller bearing 13, thereby optimizing rotational smoothness. This embodiment, through the synergy of the dual bearing sets, ensures stability under heavy loads while reducing rotational errors, providing a stable dynamic reference for the dial indicator 33 measurement and avoiding measurement distortion introduced by shaft runout.
[0021] Preferably, the central shaft 11 and the inner rings of the tapered roller bearing 13 and the deep groove ball bearing 14 are all interference fit, and the bearing housing 12 is axially limited at both ends by bearing pressure plates 15.
[0022] Preferably, such as Figure 2As shown, the fixed base 31 is fixedly connected to the base 10 by magnetic adsorption or T-slot 16, so that the fixed position of the base 10 can be adjusted radially, thereby adapting to rollers of different specifications to complete the measurement, expanding the tooling adaptation range, enhancing versatility and measurement flexibility, and reducing the changeover cost of multi-specification testing. The above-disclosed embodiments are merely specific examples of this utility model, but this utility model is not limited thereto. For those skilled in the art, any modifications made without departing from the principle of this utility model should be considered as protected by this utility model.
Claims
1. A fixture for inspecting the machining accuracy of spinning rollers, characterized in that: Includes a base (10), on which a fixed spindle (20) is rotatably connected. The external dimensions, conical surface parameters, and positioning reference of the fixed spindle (20) are consistent with the roller mounting shaft of the spinning machine. The base (10) is also provided with a measuring component (30). The measuring component (30) includes a fixed seat (31) connected to the base (10). A dial indicator (33) is connected to the fixed seat (31) via a universal joint (32). The fixed mandrel (20) is fixedly connected to the central shaft (11), and the central shaft (11) is rotatably connected to the base (10). The base (10) is equipped with a bearing seat (12), and the bearing seat (12) has a stepped mounting cavity. The upper part of the stepped mounting cavity is adapted to a tapered roller bearing (13), and the central shaft (11) is assembled on the inner ring of the tapered roller bearing (13).
2. The tooling for inspecting the machining accuracy of a spinning roller according to claim 1, characterized in that: The lower part of the stepped mounting cavity of the bearing housing (12) is adapted to the deep groove ball bearing (14), and the lower end of the central shaft (11) is assembled to the inner ring of the deep groove ball bearing (14).
3. The tooling for inspecting the machining accuracy of a spinning roller according to claim 2, characterized in that: The central shaft (11) and the inner rings of the tapered roller bearing (13) and the deep groove ball bearing (14) are all interference fit, and the bearing housing (12) is axially limited at both ends by bearing pressure plates (15).
4. The tooling for inspecting the machining accuracy of a spinning roller according to claim 1, characterized in that: The fixed base (31) is fixedly connected to the base (10) by magnetic adsorption or T-slot (16), so that the fixed position of the base (10) can be adjusted radially.
5. The tooling for inspecting the machining accuracy of a spinning roller according to claim 1, characterized in that: The base (10) is ground and the flatness of the bottom surface is ≤0.02mm. It is rigidly connected to the testing platform by fastening bolts.