Composite testing fixture for simultaneously detecting parallelism of spigot surface and roundness of spigot of flywheel casing

Abstract

A composite testing fixture for simultaneously detecting the parallelism and the roundness of a spigot surface of a flywheel casing comprises a bottom plate, the lower end of a shaft is arranged in a bearing sleeve in the middle of the bottom plate, a rotating arm is arranged at the upper end of the shaft, and a dial indicator for detecting the roundness of the spigot of the flywheel casing is arranged at one end of the rotating arm through a gauge stand. A dial indicator seat for detecting the parallelism of the spigot surface of the flywheel casing is arranged at the other end of the rotating arm, a measuring rod of the dial indicator for detecting the roundness of the spigot of the flywheel casing is in a horizontal state, and a measuring head of the dial indicator for detecting the roundness of the spigot of the flywheel casing corresponds to the spigot surface A of the flywheel casing; a measuring rod of the dial indicator for detecting the parallelism of the spigot surface of the flywheel housing is in a vertical state, and a measuring head of the dial indicator for detecting the parallelism of the spigot surface of the flywheel housing corresponds to the spigot end surface B of the flywheel housing. The detection tool is simple in operation, convenient and practical, and can quickly verify whether the parallelism of the spigot surface of the flywheel housing and the roundness of the spigot are qualified.

Description

Technical Field

[0001] The utility model belongs to a checking tool in the machinery parts processing industry, in particular to a checking tool for checking a flywheel housing. Background Art

[0002] At present, in the machining industry, the parallelism and roundness of the stop surface of the flywheel housing are generally measured by three-dimensional coordinate measuring machines. Although the three-dimensional coordinate measurement has high measurement accuracy and measurement accuracy, the three-dimensional coordinate equipment is expensive, the measurement speed is slow, the environmental requirements are relatively high, and the programming and usage level of the operator are also high. Considering the above limitations, in order to facilitate the machining operators to complete self-inspection during batch production, this inspection fixture is designed and manufactured to verify whether the parallelism and roundness of the stop surface of the flywheel housing are qualified. Summary of the invention

[0003] The utility model aims to provide a composite inspection tool for simultaneously inspecting the parallelism and roundness of the stopper surface of a flywheel housing. The utility model is simple to operate, convenient and practical, and is a inspection tool that can quickly verify whether the parallelism and roundness of the stopper surface of the flywheel housing are qualified.

[0004] The technical scheme of the utility model is that it comprises a base plate, the lower end of the shaft is installed in the bearing sleeve in the middle of the base plate, the upper end of the shaft is equipped with a rotating arm, a dial indicator for detecting the roundness of the stop of the flywheel housing is installed on one end of the rotating arm via a base, a dial indicator base for detecting the parallelism of the stop surface of the flywheel housing is installed on the other end of the rotating arm, a measuring rod of the dial indicator for detecting the roundness of the stop of the flywheel housing is in a horizontal state, a measuring head of the dial indicator for detecting the roundness of the stop of the flywheel housing corresponds to the stop surface A of the flywheel housing, a measuring rod of the dial indicator for detecting the parallelism of the stop surface of the flywheel housing is in a vertical state, and a measuring head of the dial indicator for detecting the parallelism of the stop surface of the flywheel housing corresponds to the stop end face B of the flywheel housing.

[0005] The arm is fixed to the shaft by screws and end caps.

[0006] The base is an L-shaped plate, including a horizontal plate and a vertical plate. The horizontal plate is provided with mounting holes for installing the dial indicator measuring rod, and the vertical plate is provided with two sets of mounting holes. The two sets of mounting holes are upper mounting holes located at the upper part for installing the dial indicator measuring rod, and lower mounting holes located at the lower part for fixing the base. During installation, the vertical plate is fitted against the end of the rotating arm and fixed by screws inserted into the lower mounting holes.

[0007] The bearing sleeve is installed in the middle of the base plate by bolts.

[0008] A plurality of pads for supporting the bottom surface of the flywheel housing are arranged on the upper surface of the bottom plate, and the pads are mounted on the bottom plate via bolts.

[0009] The upper surface of the bottom plate is also used for round positioning pins and diamond positioning pins, and the position sizes of the round positioning pins and diamond positioning pins are consistent with the position sizes of the two positioning process holes on the flywheel housing.

[0010] The upper surface of the base plate also has bolts and gaskets for tightening the flywheel housing.

[0011] There are fastening holes on the side of the mounting hole and the upper mounting hole. The fastening holes are vertically connected with the mounting hole and the upper mounting hole. The clamping screws are installed at the fastening holes. When the end of the clamping screw is against the measuring rod of the dial indicator, the dial indicator is locked on the base.

[0012] The utility model solves the problem that the employees of flywheel shell products can only rely on three coordinates to self-check the parallelism of the large stopper surface and the roundness of the stopper. Compared with the prior art, the utility model has the characteristics of convenient operation, simple structure, reliable accuracy, easy manufacturing, low cost, and low requirements for use conditions. The utility model can greatly save detection time and improve work efficiency. It can be widely used in self-checking the parallelism of the large stopper surface and the roundness of the stopper after the first piece of flywheel shell products is finalized. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 yes Figure 1 Top view of the . DETAILED DESCRIPTION

[0015] like Figure 1 , 2 As shown, the meter base 1 is fixed to both sides of the rotating arm 4 by screws 7. The meter base 1 is an L-shaped plate, including a horizontal plate and a vertical plate. The horizontal plate has mounting holes, and the vertical plate has two sets of mounting holes, which are upper mounting holes located at the top and lower mounting holes for mounting screws. During installation, the vertical plate fits the end of the rotating arm 4 and then the screws 7 are inserted into the lower mounting holes. The measuring rods of the two dial gauges 3 are installed in the mounting holes and the upper mounting holes. The fastening holes are vertically connected with the mounting holes and the upper mounting holes. The dial gauges are locked on the gauge base 1 by the clamping screws 2 installed at the fastening holes. The swing arm 4 is fixed on the shaft 6 by screws 7 and the end cover 8. The shaft 6 is installed in the bearing sleeve 5. The bearing sleeve 5 is installed in the middle of the bottom plate 9 by the mounting bolts 13. The position and size of the circular positioning pins 10 and the diamond positioning pins 14 on the bottom plate 9 are consistent with the position and size of the two positioning process holes on the flywheel housing. The three pads 11 are locked on the bottom plate by bolts 12 to support the flywheel housing. The bolts 15 and the gaskets 16 are used to press the flywheel housing. One of the two dial gauges is used to detect the roundness of the stopper of the flywheel housing, and the other is used to detect the parallelism of the stopper surface of the flywheel housing.

[0016] During the inspection, two locating pins are used to locate the flywheel housing parts supported on the backing plate 11, and three sets of bolts 15 and washers 16 are used to press the flywheel housing parts. A starting position is randomly selected, and the two dial indicators 3 are set to zero. The rotating arm 4 is rotated for one circle and the reading changes on the dial indicators 3 are observed. By comparing the readings with the requirements of the drawing, the parallelism of the large stopper surface of the flywheel housing and the roundness of the stopper can be determined.

Claims

1. A composite inspection tool for simultaneously inspecting the parallelism and roundness of the stopper surface of a flywheel housing, characterized in that: The invention comprises a bottom plate (9), a lower end of a shaft (6) is mounted in a bearing sleeve (5) in the middle of the bottom plate (9), a rotating arm (4) is mounted on the upper end of the shaft (6), a dial indicator for detecting the roundness of the stopper of a flywheel housing is mounted on one end of the rotating arm (4) via a table seat, a dial indicator (3) for detecting the parallelism of the stopper surface of the flywheel housing is mounted on the other end of the rotating arm (4) via a table seat (1), a measuring rod of the dial indicator for detecting the roundness of the stopper of the flywheel housing is in a horizontal state, a measuring head of the dial indicator for detecting the roundness of the stopper of the flywheel housing corresponds to a stopper surface A of the flywheel housing, a measuring rod of the dial indicator for detecting the parallelism of the stopper surface of the flywheel housing is in a vertical state, and a measuring head of the dial indicator for detecting the parallelism of the stopper surface of the flywheel housing corresponds to a stopper end surface B of the flywheel housing.

2. The composite inspection tool for simultaneously inspecting the parallelism of the stopper surface and the roundness of the stopper of a flywheel housing according to claim 1 is characterized in that: The rotating arm (4) is fixed on the shaft (6) by means of screws and an end cover (8).

3. The composite inspection tool for simultaneously inspecting the parallelism of the stopper surface and the roundness of the stopper of a flywheel housing according to claim 1 is characterized in that: The base (1) is an L-shaped plate, comprising a horizontal plate and a vertical plate. The horizontal plate is provided with a mounting hole for mounting a dial gauge measuring rod, and the vertical plate is provided with two sets of mounting holes, the two sets of mounting holes being upper mounting holes for mounting a dial gauge measuring rod and lower mounting holes for fixing the base. During installation, the vertical plate is fitted with the end of the rotating arm (4) and fixed by screws inserted into the lower mounting holes.

4. The composite inspection tool for simultaneously inspecting the parallelism of the stopper surface and the roundness of the stopper of a flywheel housing according to claim 1 is characterized in that: The bearing sleeve (5) is mounted on the middle part of the base plate (9) via bolts.

5. The composite inspection tool for simultaneously inspecting the parallelism of the stopper surface and the roundness of the stopper of a flywheel housing according to claim 1 is characterized in that: A plurality of pads (11) for supporting the bottom surface of the flywheel housing are arranged on the upper surface of the bottom plate (9), and the pads (11) are mounted on the bottom plate (9) via bolts.

6. The composite inspection tool for simultaneously inspecting the parallelism of the stopper surface and the roundness of the stopper of a flywheel housing according to claim 1 is characterized in that: The upper surface of the bottom plate (9) is also provided with a circular positioning pin (10) and a diamond-shaped positioning pin (14). The position and size of the circular positioning pin (10) and the diamond-shaped positioning pin (14) are consistent with the position and size of the two positioning process holes on the flywheel housing.

7. The composite inspection tool for simultaneously inspecting the parallelism of the stopper surface and the roundness of the stopper of a flywheel housing according to claim 1 is characterized in that: The upper surface of the base plate (9) is also provided with bolts (15) and gaskets (16) for pressing the flywheel housing.

8. The composite inspection tool for simultaneously inspecting the parallelism of the stopper surface and the roundness of the stopper of a flywheel housing according to claim 3 is characterized in that: The mounting hole and the upper mounting hole are provided with fastening holes on their sides. The fastening holes are vertically connected with the mounting hole and the upper mounting hole. A clamping screw (2) is installed at the fastening hole. When the end of the clamping screw (2) abuts against the measuring rod of the dial indicator, the dial indicator (3) is locked on the table base (1).

Images