CN103234410B - The method that bearing groove position is measured and pick-up unit - Google Patents

Abstract

The invention relates to a method for measuring the groove position of a bearing and a detection device II for detecting the groove position of the bearing. The method for measuring the bearing groove position of the present invention, wherein, one, the detection device I and the detection device II are reset to zero to be detected; two, a tested piece is placed on the detection device I for detection, and the measured value is D1; three, Place the tested piece on the detection device II for detection, and the measured value is D2; 4. Calculate the variation of the measured value, that is, D3=D2-D1, where D3 is the variation of the measured value; The deviation tolerance value of the groove position of the test piece, that is, α=D3×K, where α is the tolerance value, K is the correction coefficient of the detection device I and the detection device II; and the detection device II used for the measurement of the bearing groove position . The calculation method is simple and can quickly calculate the tolerance of the measured groove position, and the calculation accuracy reaches the micron level; through the simple device and the purpose of precision measurement of the groove position, the mechanical structure is stable, the repeatability is high, and automation is realized, which greatly reduces labor. cost.

Description

Method and detection device for bearing groove position measurement

technical field

The invention relates to a method for measuring a bearing groove position and a detection device II for detecting the bearing groove position.

Background technique

At present, the technology of precise measurement of groove position is usually completed manually by micron-scale measurement probes and very precise and stable mechanical measurement structures. Due to the low efficiency of manual measurement and the ultra-high requirements for mechanical structures and multi-action coordination , the current measurement cost is very high, and the automatic measurement cannot be realized due to the mechanical structure

Contents of the invention

1. Technical problems to be solved

The purpose of the present invention is to solve the above-mentioned problems in the prior art, and provide a simple measuring method with high measuring accuracy, and the detection device II has a simple structure and is easy to manufacture.

2. Technical solution

In order to solve the above-mentioned technical problems, the method for measuring the bearing groove position of the present invention, wherein,

1. Reset the detection device I and the detection device II to zero and wait for detection;

2. Take a tested piece and place it on the detection device I for detection, and the measured value is D1;

3. Place the above-mentioned tested piece on the detection device II for detection, and the measured value is D2;

4. Calculate the variation of the measured value, that is, D3=D2-D1, where D3 is the variation of the measured value;

Calculate the deviation tolerance value of the groove position of the tested piece, that is, α=D3×K, where α is the tolerance value, and K is the correction coefficient of the detection device I and the detection device II.

As an optimization, the above-mentioned detection device II measures the object under test through an eccentric measurement method.

As an optimization, the above-mentioned eccentricity measurement method is to measure by clamping one side of the inner wall of the channel of the measured piece with the measuring ball II in the detection device II, and the horizontal connection line of the center of the ball II is parallel to the center line of the channel and Do not overlap.

As an optimization, the measuring ball I of the detection device 1 is attached in the channel of the measured object, and the horizontal axis of the measuring ball I coincides with the center line of the channel.

A detection device II for bearing groove position measurement, which includes a fixed plate and a movable plate opposite to it and movable left and right, and a positioning plate for fitting the measured piece is arranged between the fixed plate and the movable plate , the lower ends of the fixed plate and the movable plate are provided with measuring devices corresponding to each other, and the measuring devices are arranged in parallel.

The above-mentioned positioning plate is fixed on the fixed plate alone, also can be fixed on the movable plate independently, also can be fixed on the fixed plate and the movable plate respectively in two.

As an optimization, the measuring device is a measuring ball II, and the diameter of the measuring ball II is smaller than the diameter of the curved surface of the channel under test.

As an optimization, the above measuring device is a pointed measuring stick or a semicircular measuring stick.

As an optimization, the horizontal connecting line of the center of the measurement ball II is parallel to and does not overlap with the center line of the channel.

Three, the beneficial effect of the present invention

The calculation method is simple and can quickly calculate the tolerance of the measured groove position, and the calculation accuracy reaches the micron level; through the simple device and the purpose of precise measurement of the groove position, the mechanical structure is stable and the repeatability is high, which provides the possibility for automatic measurement of the groove position , so as to greatly reduce labor costs.

Description of drawings

Fig. 1 is a state diagram when the detection device 1 of the present invention detects the tested object;

Fig. 2 is a state diagram when the detection device II of the present invention detects the object under test.

In the figure, 1 is a fixed plate, 2 is a movable plate, 3 is a positioning plate, 4 is a measuring ball I, 5 is a measuring ball II, 6 is a horizontal connecting line of the ball center, 7 is a center line, and 8 is a measuring probe.

detailed description

The method for measuring the bearing groove position of the present invention and the detection device II will be further described below in conjunction with the accompanying drawings:

Embodiment 1: As shown in Figures 1 and 2, the method for measuring the bearing groove position of the present invention, wherein,

1. Reset the detection device I and the detection device II to zero and wait for inspection. In this step, the structures of the detection device I and the detection device II are basically the same, and both devices contain a measuring probe 8. , select a zero standard part to carry out the zeroing test, and perform the zeroing process on the above-mentioned measuring probe 8, in order to be ready for inspection;

2. Take a tested piece and place it on the detection device I for detection, and the measured value is D1;

3. Place the above-mentioned tested piece on the detection device II for detection, and the measured value is D2;

Four, calculate the amount of change of the measured value, that is, D3=D2-D1, wherein D3 is the amount of change of the measured value, that is, the amount of change of the value measured by the detection device I and the detection device II;

Calculate the deviation tolerance value of the groove position of the tested piece, that is, α=D3×K, where α is the tolerance value, and K is the correction coefficient of the detection device I and the detection device II, that is, the relative end surface of the groove position generates per unit When changing, it reflects the change magnification on the measuring probe 8 .

The above-mentioned detection device II measures the object under test through an eccentric measurement method. The above-mentioned eccentric measurement method is to measure by clamping one side of the inner wall of the channel of the measured object with the measuring ball II5 in the detection device II, that is, during the measurement process, the measuring ball touches the upper surface of the inner wall of the measured object channel, The horizontal connection line 6 of the center of the measurement ball II5 is parallel to and does not overlap with the center line 7 of the channel. The detection device II includes two detection balls II, and the horizontal connection line 6 of the center of the measurement ball II5 is two Check the connection line of the center of Ball II.

The measuring ball I4 of the detection device 1 is attached in the groove of the measured object, and the horizontal connecting line 6 of the center of the measuring ball I4 coincides with the center line 7 of the groove.

It can be seen from Figure 1 and Figure 2 that when the measured bearing ring is the same as the zero standard part and has no groove position deviation, the values D1 and D2 generated by the two measurements should be completely consistent in theory; and when the groove position When there is a deviation, D2 will produce corresponding changes according to the deviation size, so that the measurement of the depth of the channel and the measurement of the deviation of the channel position can be realized by two measurements, which can completely realize intelligent sorting, and effectively prevent defective products from entering the subsequent process. The subsequent processing of the machine tool will cause a collision, which can effectively protect the subsequent processing of the lathe.

As shown in Figure 2, a detection device II for bearing groove position measurement, which includes a fixed plate 1 and a movable plate 2 which is arranged opposite to it and can move left and right. There is a positioning plate 3 for attaching the measured piece, the lower ends of the fixed plate 1 and the movable plate 2 are provided with measuring instruments corresponding to each other, and the measuring instruments are arranged in parallel.

The above-mentioned positioning plate 3 is fixed on the fixed plate 1 independently, also can be fixed on the movable plate 2 independently, also can be two respectively fixed on the fixed plate 1 and the movable plate 2, and the present embodiment locates The plate is fixed on the fixed plate 1.

The above-mentioned measuring device is a measuring ball II5, and the diameter of the above-mentioned measuring ball II5 is smaller than the diameter of the curved surface of the channel under test; of course, in addition, the above-mentioned measuring device can also be a pointed measuring rod or a semicircular measuring rod.

The horizontal connecting line 6 of the center of the measurement ball II5 is parallel to and does not overlap with the center line 7 of the channel.

The above-mentioned tested part is a bearing ring.

The above-mentioned measuring ball II5, which is smaller than the arc size of the channel, is fixed on the fixed plate 1 and the movable plate 2, and the movable plate 2 is moved to make the measuring ball II5 stuck in the channel of the bearing ring, and because the bearing ring The distance between the positioning plate 3 and the center of the measuring ball II5 is less than half the thickness of the bearing. The measuring ball II5 can only be stuck in the groove on the half side of the bearing ring, and at the same time, the bearing ring will be squeezed on the positioning plate 3. The measuring probe 8 measures the displacement of the movable plate 2, and then the change of the value is determined by the measuring probe 8.

As shown in Figure 1, the measuring ball I4 of the detection device 1 is basically matched with the groove of the bearing ring to be tested, and the horizontal connecting line 6 of the two measuring balls I4 in the detection device 1 is connected to the groove of the bearing ring. The centerlines 7 are coincident.

The above movable plate 2 can be moved by a spring to ensure that the force of the measuring ball pressed on the bearing ring is always consistent, the measurement is more accurate and the service life is longer.

The above description is only the preferred implementation mode of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the technical principles and algorithm principles of the present invention. Improvements and retouches should also be considered within the protection scope of the present invention.

Claims (3)

1. A method for bearing groove position measurement, characterized in that: 1. Reset the detection device I and the detection device II to zero and wait for detection; 2. Take a tested piece and place it on the detection device I for detection, and the measured value is D1; 3. Place the tested piece on the detection device II for detection, and the measured value is D2; 4. Calculate the variation of the measured value, that is, D3=D2-D1, where D3 is the variation of the measured value; Calculate the deviation tolerance value of the groove position of the measured piece, that is, α=D3×K, where α is the tolerance value, and K is the correction coefficient of the detection device I and the detection device II; The detection device II measures the tested piece through an eccentric measurement method; The eccentric measurement method is measured by clamping the measuring ball II in the detection device II on one side of the inner wall of the channel under test, and the horizontal connecting line of the center of the measuring ball II is parallel to the center line of the channel and not overlapping; The measuring ball I of the detection device 1 fits in the groove of the measured object, and the horizontal connecting line of the ball center of the measuring ball I coincides with the center line of the groove. 2. A detection device II for bearing groove position measurement, characterized in that it includes a fixed plate and a movable plate that is arranged opposite to it and can move left and right, and is provided between the fixed plate and the movable plate. The positioning plate of the test piece, the lower ends of the fixed plate and the movable plate are provided with measuring instruments corresponding to each other, and the measuring instruments are arranged in parallel; the measuring instrument is a measuring ball II, and the diameter of the measuring ball II is smaller than the measured piece The diameter of the arc surface of the channel; the horizontal connecting line of the center of the measuring ball II is parallel to and does not overlap with the center line of the channel. 3. The detection device II for bearing groove position measurement according to claim 2, characterized in that: the measuring device can also be a pointed measuring rod or a semicircular measuring rod.