CN101408402B - Device and method for measuring non-center positioning component bounce - Google Patents

Abstract

The invention discloses a device for measuring runout of a centerless positioning part and a measuring method thereof. The device has a dial indicator assembly and a bracket for fixing the dial indicator assembly, wherein: the bracket is a rotating block, and the rotating block is separated from the position to be measured. There is a matching hole, and a bushing is set in the matching hole. The dial indicator assembly is set on the bushing. The measuring head of the dial indicator protrudes from the bottom surface of the rotating block. There is a handle that can move the central axis to rotate. The outer surface of the rotating block is a stepped structure. There are two positioning pins that can be positioned in conjunction with the measured part, the measured part is set on the supporting mandrel, and the supporting mandrel is fixedly connected to the base. The runout measurement device has a simple structure, accurate clamping positioning, convenient operation and high measurement accuracy of the measurement method, and can be widely applied to the runout measurement of various parts without a center hole.

Description

Runout Measuring Device and Method for Non-Centre Positioning Parts

technical field

The invention belongs to the technical field of measuring instruments and measuring methods, and in particular relates to a runout measuring device and a measuring method for a centerless positioning part.

Background technique

The runout measurement is generally to use the mandrel to penetrate the center hole of the part and measure it with a dial indicator on the deflection meter. However, in actual production, some parts do not have a center hole, but the runout between the measurement surface and the theoretical center needs to be measured. Of course, pendulum will not work. Especially when measuring the beating of the center of the cone surface of the housing part, due to the irregularity of the housing, it is not feasible to use conventional measurement methods, and it is inconvenient and costly to use three-coordinate detection.

Contents of the invention

In order to solve the above-mentioned technical problems existing in the prior art, the object of the present invention is to provide a runout measuring device for parts without center positioning, which has a simple structure and can realize the runout measurement of parts without a center hole.

Also provided is a method for measuring runout of parts without center positioning, which is easy to operate and has high measurement accuracy.

In order to realize the above-mentioned invention object, the technical solution adopted in the present invention is: the runout measuring device of the centerless positioning part has a dial indicator assembly and a support for fixing the dial indicator assembly, and it is characterized in that: the support is a rotating block, and the rotating block There is a matching hole from the position to be measured, and a bushing is set in the matching hole. The dial indicator assembly is set on the bushing. The probe of the dial indicator protrudes from the bottom surface of the rotating block, and the center of the rotating block is fixed with a central shaft The central shaft is equipped with a handle that can be used to rotate the central shaft. The outer surface of the rotating block is a stepped structure. Rotate around the inspection tool board, there are two positioning pins on the inspection tool board that can coordinate with the parts to be tested, the parts to be tested are set on the support mandrel, and the support mandrel is fixedly connected to the base.

One of the two positioning pins is a cylindrical pin, and the other is a diamond pin.

The measurement method of the non-center positioning part runout measurement device is to measure according to the following steps: Measurement steps:

1. Put the measured surface of the workpiece upwards on the base, supported by the supporting mandrel;

2. Put the checking fixture plate on the workpiece to be tested, and position it with two pins on one side;

3. There is a step hole in the theoretical center of the simulated part on the inspection tool board, the rotating block is set in the step hole, the dial indicator assembly is set in the matching hole on the rotating block, and the measuring head of the dial indicator is stretched out to rotate The bottom surface of the block is in contact with the measured part;

4. Turn the handle to drive the rotating block and the dial indicator to rotate in the inspection tool board, and the dial indicator rotates one week to get the beating of the center of the tested surface.

The beneficial effect of adopting the above-mentioned technical solution is: the runout measuring device for parts without center positioning has a base, and the center of the base has a supporting mandrel, and the parts to be tested are set on the supporting mandrel, and the supporting mandrel ensures the vertical placement of the parts, and the inspection tool The bottom surface of the board is in contact with the large surface of the part to be measured, and two positioning pins are matched with the holes of the part to realize the positioning of two pins on one side, with high positioning accuracy, thus effectively ensuring the measurement accuracy. The rotating block is set in the stepped round hole of the theoretical center of the simulated part of the inspection tool board, and the dial indicator assembly is placed in the matching hole of the rotating block, so that the dial indicator probe contacts the measured surface of the workpiece, and the dial indicator assembly is fixed. The center of the rotating block is fixed with a central shaft, and the central shaft is equipped with a handle that can be moved to rotate the central shaft. The rotating block can rotate around the inspection tool plate. Turning the handle drives the rotating block and the dial indicator to rotate in the inspection tool board. The beating of the center of the measured surface can be obtained when the sub-meter rotates for one revolution. The runout measuring device has a simple structure, accurate clamping and positioning, and can realize the runout measurement of parts without a center hole. The measuring method is easy to operate and has high measurement accuracy.

Description of drawings

Specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is a structural schematic diagram of the device for measuring runout of a non-centralized part according to the present invention.

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

Detailed ways

As shown in Figures 1 and 2, the runout measurement device for parts without center positioning has a base 1, and a support mandrel 2 is fixed at the center of the base 1. 12 is provided with a checker plate 4, which is provided with two positioning pins 3 and 11 that can be positioned in conjunction with the parts to be tested. The positioning pin 3 is a cylindrical pin, and the positioning pin 11 is a rhombic pin. The two positioning pins The pins 3, 11 and the bottom surface of the gage plate 4 can realize the positioning of two pins on one side of the part to be tested. The checker plate 4 is provided with a stepped round hole that simulates the theoretical center of the part, and the rotating block 10 with a stepped structure on the outer surface is set in the stepped round hole on the checker plate 4. The rotating block 10 can be positioned relative to the checker plate 4. Rotate in the round hole of the step, the center of the rotating plate 10 is fixed with a central shaft 8, the central shaft is provided with a handle 9 that can be moved to rotate the central shaft, and there is a matching hole 5 on the rotating block 10 from the position to be measured, and the matching hole 5 is set There is a bushing 6, on which the dial indicator assembly 7 is sleeved, and the measuring head of the dial indicator stretches out from the bottom surface of the rotating block to contact with the measured position.

The measurement method of the non-center positioning part runout measurement device is to measure according to the following steps: Measurement steps:

1. Put the measured surface of the workpiece upwards on the base, supported by the supporting mandrel;

2. Put the checking fixture plate on the workpiece to be tested, and position it with two pins on one side;

3. There is a step hole in the theoretical center of the simulated part on the inspection tool board, the rotating block is set in the step hole, the dial indicator assembly is set in the matching hole on the rotating block, and the measuring head of the dial indicator is stretched out to rotate The bottom surface of the block is in contact with the measured part;

4. Turn the handle to drive the rotating block and the dial indicator to rotate in the inspection tool board, and the dial indicator rotates one week to get the beating of the center of the tested surface.

Claims (3)

1. no centralized positioning part pulsation measurement device, have the dial gauge assembly and the fixing support of dial gauge assembly, it is characterized in that: described support is a turning block, turning block is apart from wanting the measuring position that mating holes is arranged, be set with lining in the mating holes, described dial gauge assembly is sleeved on the lining, the gauge head of dial gauge stretches out the bottom surface of turning block, the center fixation of turning block has central shaft, central shaft is provided with can stir the handle that central shaft rotates, the lateral surface of turning block is a terraced structure, the cubing plate is provided with the step circular hole of the theoretical center of simulation part, and turning block is sleeved in the step circular hole and can rotates around the cubing plate, and the cubing plate is provided with two register pins that can cooperate the location with tested part, tested part is sleeved on and supports on the axle, supports axle and is fixedly connected on the base.

2. no centralized positioning part pulsation measurement device according to claim 1 is characterized in that: one of described two register pin are straight pin, and one is the rhombus pin.

3. measuring method of not having centralized positioning part pulsation measurement device is characterized in that following these steps to measure:

(1) the workpiece tested surface is upwards put on the base, supported by supporting axle;

(2) the cubing plate is put on the measured workpiece, locatees with plane and two pits;

(3) the cubing plate is provided with the step circular hole of theoretical center of simulation part, and turning block is sleeved in the step circular hole, and the dial gauge assembly is sleeved in the mating holes on the turning block, and the bottom surface that the gauge head of dial gauge stretches out turning block contacts with tested position;

(4) turning handle drives turning block and dial gauge and rotates in the cubing plate, and dial gauge rotates and just obtains tested surface beating to the center week.

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