CN204188099U - Axle class end internal orifice dimension is to bounce gauge - Google Patents

Abstract

The utility model discloses a kind of axle class end internal orifice dimension to bounce gauge, it comprises pedestal, fixed rack and travel(l)ing rest.Described pedestal one end is fixedly connected with fixed rack, and the other end is parallel to each other by three and towards the cannelure location and installation travel(l)ing rest of upper shed.Travel(l)ing rest top is equipped forms adjustable positioning structure by rolling center, axle sleeve, spring and sector gear.Top and the rolling center coaxial cable in travel(l)ing rest installed at the fixed rack top of the pedestal other end.The dial gauge that fixed rack is installed is positioned at top side, and both are parallel to each other by axis.In the utility model, the top side towards workpiece one end is provided with groove, the dihedral gauge head bearing pin inserted in groove is hinged, the dihedral gauge head longitudinal edge that dead axle swings is by the extension spring tractive that fixed rack is installed, make contact, axial limit come to inner hole of workpiece wall, the longitudinal edge change in location of interlock quantizes display by the dial gauge contacted.The utility model structure is simple, easy and simple to handle, is particularly suitable for production scene for quality testing.

Description

Shaft end inner hole radial runout inspection tool

technical field

The utility model relates to a checking tool for measuring the processing quality of the inner hole of a mechanical part, in particular, the utility model relates to a checking tool for measuring the radial runout of the inner hole wall at both ends of a hollow shaft.

Background technique

The hollow shaft is a common mechanical part, and the design basis and measurement basis of this type of parts are the central axis according to the convention. Under the condition of existing technical equipment, by coaxially supporting the inner holes at both ends of the hollow shaft, it is possible to accurately measure the length and radial runout of each part of the outer wall of the hollow shaft. In reality, many devices are equipped with positioning and installation accessories for the two inner holes of the hollow shaft. Therefore, this type of shaft hole has both dimensional tolerance requirements and shape and position tolerance requirements. When testing such parts, the inner holes at both ends are blocked by supports, so they cannot be directly used. The radial runout of the inner hole wall is detected, so it is difficult to effectively control the quality during the manufacturing process, especially the hollow shaft with an inner hole diameter less than 25mm is more difficult to detect on site. For example, the inner holes at both ends of the drive shaft in a high-end car transmission are only 23mm, and the radial runout of the inner holes at both ends relative to the central axis is allowed to deviate by 0.05mm. At present, there is no universal measuring tool on the market that can be directly used for on-line inspection at the production site. Due to the lack of such inspection, it has seriously restricted the industrialization process of high-precision parts in my country's automobile manufacturing industry.

Utility model content

The utility model mainly aims at the current situation that the inner hole detection at both ends of the hollow shaft lacks an online inspection tool, and proposes a inspection tool suitable for measuring the radial runout of the inner hole wall at both ends of the hollow shaft at the production site. The inspection tool has a simple structure and is easy to detect. Convenient and accurate measurement.

The utility model realizes the technical goal through the following technical solutions.

The inner hole radial runout tester at the end of the shaft includes a base, a fixed bracket and a movable bracket. The base is a rectangular plate, one end in the length direction of the plate is fixedly connected to the fixed bracket, and the other end is evenly distributed with three longitudinal slots parallel to each other and opening upwards, the slot in the middle is a rectangular slot, and the T-shaped slots on both sides are used for For locking the movable bracket. The movable bracket is an angular component, and the bottom is provided with a downwardly protruding rectangular strip. The rectangular strip cooperates with the groove in the center of the base to form a straight track structure. The top of the movable bracket is equipped with a movable top, a shaft sleeve, a spring and a sector gear. Axially adjustable positioning structure, the top of the fixed bracket connected to the other end of the base is positioned and installed on the top, the horizontal top is coaxial with the movable top in the other end of the movable bracket, and the dial gauge installed on the fixed bracket is located on the side of the top , the two axes are parallel to each other. The improvement is that a groove is provided on the side of the top facing the workpiece, and the angular measuring head inserted into the groove is connected by a pin hinge, and the radial side of the angular measuring head swinging on a fixed axis is controlled by a pulley mounted on a fixed bracket. The spring is pulled, so that the contact of the axial edge is close to the inner hole wall of the workpiece, and the position change of the linked radial edge is quantified and displayed by the contact dial indicator.

In the above structure, the axial side and the radial side of the angular measuring head are connected at right angles, the pin shaft is installed in the through hole at the corner, and the distance from the center of the through hole to the center of the axial side contact and the contact with the dial gauge head Radial edges are equally spaced. Only when the distance between the two sides is equal can the dial gauge 1:1 quantify the radial runout of the measured inner hole wall.

Compared with the prior art, the utility model has the following positive effects:

1. The inner holes at both ends of the work are coaxially supported, with accurate positioning and convenient loading and unloading, especially suitable for testing at the production site;

2. The angular probe is hinged in the groove reserved on the side of the top. The axial side of the angular probe extends to the inner wall of the inner hole to measure the inner wall. The following radial side displays the measurement result by the dial indicator. The structure is simple, the measurement is convenient, the quantitative display measurement result is intuitive, and the detection efficiency is high.

Description of drawings

Fig. 1 is the structural representation of the utility model.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a schematic cross-sectional view of C-C in Fig. 1, showing the connection and positioning structure of the movable support and the base.

Fig. 4 is an enlarged schematic view of the section F-F in Fig. 1 .

Detailed ways

Below according to accompanying drawing and in conjunction with embodiment, the utility model is further described.

The radial runout tester of the inner hole at the end of the shaft shown in Figure 1 includes a base 1, a fixed support 2 and a movable support 3. This embodiment is used for the radial runout detection of the inner hole wall at both ends of the transmission shaft of a car transmission. The base 1 is a rectangular plate, one end of the length direction of the plate is fixedly connected to the fixed bracket 2, and the other end is evenly distributed with three longitudinal slots parallel to each other and opening upwards, the slot in the middle is a rectangular slot, and the T-shaped slots are arranged on both sides. Slot is used for locking movable support 3. The movable support 3 is an angular component, and the bottom is provided with a downwardly protruding rectangular strip 3.5, which cooperates with the groove in the center of the base 1 to form a straight track. This straight track can ensure that the movable support 3 moves back and forth on the base 1 and is always on the same axis. The specific installation position of the movable support 3 can be freely adjusted according to the length of the workpiece. Once the position is determined, it will be locked by the bolt matched with the T-shaped slot. The movable center 3.1 equipped on the top of the movable support 3 is one of the supports for the workpiece. The movable center 3.1 is supported axially by the spring 3.3, and the sector gear 3.4 with a handle is used to axially adjust the supporting position of the movable center 3.1. 3.1 Can be used for workpiece disassembly. The top of the fixed support 2 connected to the other end of the base 1 is positioned to install the top 2.2, and the horizontal top 2.2 is coaxially opposite to the movable top 3.1 assembled on the top of the other end of the movable support 3, and is used to support the workpiece together. The dial indicator 2.1 installed on the fixed bracket 2 is located at the side of the top 2.2, and the axes of the two are parallel to each other. In order to make the inner hole wall of the workpiece located at one end of the fixed bracket 2 measurable, the utility model provides a groove on the side of the top 2.2 facing the one end of the workpiece. The radial side of the swinging angular measuring head 2.3 is pulled by the extension spring 2.4 installed on the fixed support 2, so that the contact point of the axial side is against the inner hole wall of the workpiece, and the radial runout of the inner hole wall can be measured by rotating the workpiece. The position change of the axial side in the measurement structure is reflected by the linked radial side, and the specific amount is quantified and displayed by the contacted dial indicator 2.1. In order to simplify the processing of the measurement results, the axial side and the radial side of the angular measuring head 2.3 in the utility model are connected at right angles, and the distance from the center of the through hole of the pin shaft 2.5 to the center of the axial side contact at the corner is summed to 100 Sub-table 2.1 The distance between the meter head and the radial edge is equal. The error measured by this 1:1 measurement structure is the actual error, and the data displayed by the dial indicator 2.1 is the actual radial runout of the inner hole wall of the workpiece, which can be collected without any conversion in the middle. After the measurement of the inner hole wall at the right end is finished, pull the handle configured by the sector gear 3.4 to make the movable top 3.1 retreat. After taking off the workpiece, measure the radial runout of the inner hole wall at the other end in the same way, and the measurement accuracy is the same as that of the inner hole at the right end.

The utility model has the advantages of simple measuring structure and convenient measuring operation, and can accurately measure the radial run-out of inner hole walls at both ends of hollow shafts and other workpieces. Since the measuring tool is purely mechanical and does not require high measurement conditions, it is especially suitable for on-line inspection at the production site, which is conducive to quality management and improvement of production efficiency.

Claims (2)

1. A radial runout inspection tool for the inner hole at the end of a shaft, which includes a base (1), a fixed bracket (2) and a movable bracket (3); the base (1) is a rectangular plate with one end in the length direction of the plate surface The fixed bracket (2) is fixedly connected, and the other end is evenly distributed with three longitudinal slots parallel to each other and opening upwards. The slot in the middle is a rectangular slot, and the T-shaped slots on both sides are used to lock the movable bracket (3); The movable bracket (3) is an angular component, and the bottom is provided with a downwardly convex rectangular strip (3.5), which cooperates with the centered groove of the base (1) to form a straight track structure, and the top of the movable bracket (3) Equipped with an axially adjustable positioning structure composed of movable top (3.1), bushing (3.2), spring (3.3) and sector gear (3.4), positioned on the top of the fixed bracket (2) connected to the other end of the base (1) Install the top (2.2), the horizontal top (2.2) is coaxial with the movable top (3.1) in the movable bracket (3) at the other end, and the dial indicator (2.1) installed on the fixed bracket (2) is located at the top ( 2.2) side, the two axes are parallel to each other; it is characterized in that: the side of the tip (2.2) facing the workpiece is provided with a groove, and the angle probe (2.3) inserted into the groove is hinged with a pin (2.5), The radial side of the angular measuring head (2.3) swinging on the fixed axis is pulled by the tension spring (2.4) installed on the fixed bracket (2), so that the contact point of the axial side is close to the inner hole wall of the workpiece, and the position of the linked radial side changes Quantitatively displayed by the contact percentage table (2.1). 2. The radial runout inspection tool for the inner hole at the end of the shaft according to claim 1, characterized in that: the axial side and the radial side of the angular measuring head (2.3) are connected at right angles, and pins (2.5 ) The distance from the center of the through hole to the center of the axial edge contact is equal to the distance from the dial indicator (2.1) to the radial edge.