Device for detecting wall thickness and coaxiality of inner circle and outer circle of sleeve-shaped workpiece

Abstract

The utility model discloses a sleeve-shaped workpiece wall thickness and inner and outer circle coaxiality detection device, which comprises a workbench, a positioning mechanism and a detection mechanism, and is characterized in that the positioning mechanism comprises a first positioning piece and a second positioning piece, the first positioning piece is connected to the workbench and is used for radially positioning a workpiece, and the second positioning piece is connected to the workbench and is used for axially positioning the workpiece; the detection mechanism is adjacent to the positioning mechanism and is used for measuring the wall thickness of the workpiece and the coaxiality information of the inner circle and the outer circle. The workpiece is stably positioned in the space through the first positioning piece and the second positioning piece, and the function of detecting the wall thickness of the workpiece and the coaxiality of the inner ring and the outer ring is achieved in cooperation with the measuring mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection equipment technical field, especially pressure pump stainless steel bushing's wall thickness and the detection device of inside and outside circle coaxiality. BACKGROUND

[0002] The stainless steel bushing in the pressure pump, its design characteristic is especially remarkable, mainly reflects the bushing wall thickness thin, precision requirement is high, especially the tolerance of wall thickness only 0.0127, this numerical value is the great challenge for any manufacturing link. Especially crucially, such fine wall thickness control is directly related to the coaxiality requirement of bushing inside and outside circle, must ensure extremely high precision, to guarantee the stability and efficiency of pressure pump when working.

[0003] However, facing such high-precision measurement demand, the traditional, general detection tool is not up to the task in the field application. These general gauges often difficult to accurately capture such tiny size difference, especially when measuring the complex index of inside and outside circle coaxiality, its limitation is particularly prominent. In addition, even if it can try to measure, the cumbersome operation process and the uncertainty of the result also greatly increase the uncertainty factor in production.

[0004] On the other hand, although high-precision measuring equipment such as three coordinate measuring machine can theoretically meet the measurement demand, but its long operation cycle, low efficiency problem can not be ignored. In fast-paced production environment, long waiting time often means cost increase and capacity decline, which is obviously not an ideal solution. SUMMARY

[0005] The embodiment of the application provides a sleeve-shaped workpiece wall thickness and inside and outside circle coaxiality detection device, which is used for solving the technical problem of wall thickness and coaxiality detection of pressure pump stainless steel bushing.

[0006] The embodiment of the application provides a sleeve-shaped workpiece wall thickness and inside and outside circle coaxiality detection device, which comprises:

[0007] A workbench;

[0008] A positioning mechanism comprising:

[0009] A first positioning member connected to the workbench for radially positioning the workpiece;

[0010] A second positioning member connected to the workbench for axially positioning the workpiece;

[0011] A detection mechanism is arranged adjacent to the positioning mechanism, and the detection mechanism is used for measuring the wall thickness and inside and outside circle coaxiality information of the workpiece.

[0012] The beneficial effects of the above embodiment are that the workpiece is stably positioned in space by the first positioning member and the second positioning member, and the wall thickness and the coaxiality of the inner and outer rings of the workpiece are detected by the measuring mechanism.

[0013] On the basis of the above embodiment, the embodiments of the present application can also be improved as follows:

[0014] In one of the embodiments of the present application, the first positioning member is in contact with the inner hole wall of the workpiece for limiting. The beneficial effect of this step is that the inner hole of the workpiece is supported and limited by the first positioning member, realizing the radial positioning function of the workpiece.

[0015] In one of the embodiments of the present application, the first positioning member supports at different positions of the inner hole wall of the workpiece. The beneficial effect of this step is that the stability of positioning can be improved.

[0016] In one of the embodiments of the present application, at least two first positioning members support at the same position. The beneficial effect of this step is that the stability of positioning can be improved.

[0017] In one of the embodiments of the present application, it further comprises a first support and a second support, the first support and the second support are both connected to the workbench, the first positioning member is adjustably connected to the first support, and the second positioning member is adjustably connected to the second support. The beneficial effect of this step is that it is convenient to limit the workpieces of different hole diameters.

[0018] In one of the embodiments of the present application, the detection mechanism comprises a sensor and a processor, the sensor and the processor are both connected to the workbench, and the sensor and the processor are electrically connected. The beneficial effect of this step is that the sensor and the processor cooperate to detect the size information of the workpiece.

[0019] In one of the embodiments of the present application, it further comprises a third support, and the first support and the third support are both connected with the position-adjustable sensor. The beneficial effect of this step is that it is convenient to measure workpieces of different sizes.

[0020] In one of the embodiments of the present application, the third support is adjustably connected to the workbench. The beneficial effect of this step is that it is convenient to adjust the sensor arranged on the outer periphery of the workpiece to a suitable detection position.

[0021] In one of the embodiments of the present application, the second positioning member has a rotatable positioning end. The beneficial effect of this step is that it is convenient to reduce the wear when the workpiece contacts the second positioning member. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed in the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, the elements or parts are not necessarily drawn according to the actual proportions.

[0023] Figure 1 It is a structure diagram of the detection device;

[0024] Figure 2 It is Figure 1 It is a local enlarged diagram of A in the middle;

[0025] Figure 3 It is a structure diagram of the workpiece placed in the detection device.

[0026] Among them, 1 workbench, 2 positioning mechanism, 201 first positioning part, 202 second positioning part, 3 detection mechanism, 4 first support, 5 second support, 6 vertical plate, 7 third support. Specific embodiments

[0027] In the present application, unless otherwise explicitly specified and limited, the terms in the present application should be understood in a broad sense, such as connection, which can be fixed connection, or detachable connection or integrated, which can be directly connected or indirectly connected through intermediate medium. If it involves power, electronic equipment, it can also be electrically connected or communication signal connected. For ordinary skilled in the art, different terms in the present application can be understood according to the specific circumstances, and the specific meaning of the scope should be limited to the function of the present application.

[0028] In the description of the present application, it should be understood that the orientation terms or position relationship description is based on the orientation or position relationship shown in the drawings, or based on the orientation or position relationship in actual use, only for the convenience of describing the content of the present application and simplifying the description, and is not intended to indicate or imply that the device or element must have a specific orientation, structure and operation, therefore it cannot be understood as a limitation of the present application.

[0029] As Figure 1 , 2 As shown in the figure, a sleeve-shaped workpiece wall thickness and inner and outer circle coaxiality detection device, comprising: workbench 1, positioning mechanism 2, detection mechanism 3, positioning mechanism 2 includes: first positioning part 201, second positioning part 202, first positioning part 201 is connected to workbench 1, which is used for positioning the workpiece radially, second positioning part 202 is connected to workbench 1, which is used for positioning the workpiece axially, detection mechanism 3 is arranged adjacent to positioning mechanism 2, detection mechanism 3 is used for measuring the wall thickness and inner and outer circle coaxiality information of the workpiece.

[0030] Specifically, asFigure 2 As shown in the drawings, the detection device further comprises a first support 4 and a second support 5, both of which are connected to the workbench 1, the first positioning member 201 is adjustably connected to the first support 4, and the second positioning member 202 is adjustably connected to the second support 5. The workbench 1 is further connected with a vertical plate 6, the first support 4 is connected to the upper end of the vertical plate 6, the first positioning member 201 has a columnar structure, and is adjustably connected to the first support 4 along the axial direction of the first positioning member 201, such as being directly connected to the through hole of the first support 4 through a thread, or a locking bolt is connected to the first support 4, when the first positioning member 201 is inserted into the through hole, the locking bolt is threadedly connected to the first support 4 and presses the first positioning member 201, so as to position the first positioning member 201 on the first support 4, the front end of the first positioning member 201 has a cylindrical positioning head, which is in contact with the workpiece to support the workpiece. The second support 5 is connected to the upper end of the vertical plate 6, the second support 5 is provided with a threaded hole, the second positioning member 202 has a rotatable positioning end and a shaft body for mounting the positioning end, the positioning end is a bearing, the bearing is connected to the shaft body, and the shaft body has a threaded end which is threadedly connected to the threaded hole of the second support 5. Through the above structure, the positions of the first positioning member 201 and the second positioning member 202 can be adjusted, so as to realize the function of supporting and positioning workpieces of different sizes.

[0031] Specifically, as shown in the drawings, the first positioning member 201 is in contact with the inner hole wall of the workpiece to limit the position. The first positioning member 201 supports and limits the inner hole of the workpiece, thereby realizing the radial positioning function of the workpiece. Figure 3

[0032] Specifically, as shown in the drawings, the first positioning member 201 supports at different positions of the inner hole wall of the workpiece, and at least two first positioning members 201 support at the same position. The first positioning member 201 has four, two of which form a group, and the same group supports and limits at the same position. Different positions refer to different circumferential angle positions. Two positioning members support the inner hole wall of the workpiece at the same circumferential angle position, and the first positioning member 201 supports at two positions, which can realize the function of stably supporting the workpiece. Figure 3

[0033] Specifically, the detection mechanism 3 comprises a sensor and a processor, both of which are connected to the workbench 1, the sensor is used for detecting the workpiece, the sensor and the processor are electrically connected, and the processor is used for converting the electrical signal into the wall thickness and concentricity information of the workpiece. The sensor is a displacement sensor with a model of DGC-8ZGC, and the processor is an industrial all-in-one machine.

[0034] Specifically, as shown in the drawings, the first positioning member 201 is in contact with the inner hole wall of the workpiece to limit the position. The first positioning member 201 supports and limits the inner hole of the workpiece, thereby realizing the radial positioning function of the workpiece. Figure 2 ​​As shown, the detection device further comprises a third support 7, and the first support 4 and the third support 7 are both connected with a position-adjustable sensor. The third support 7 is provided with an open clamping block at one end, the sensor is inserted into the open clamping block, and the sensor is locked at the opening by a bolt to make the opening structure smaller, so as to clamp the sensor in the open clamping block. In addition, the sensor can also be positioned in the through hole of the third support 7 by a locking nut. The first support 4 is also connected with a clamping block, and the clamping block is connected with the first support 4 by a bolt. The sensor is connected to the clamping block and passes through the through hole of the first support 4, so as to realize the function of adjusting the axial position of the sensor.

[0035] Specifically, the third support 7 is position-adjustably connected to the workbench 1. The workbench 1 is connected with a fourth support, and the fourth support has an L-shaped structure and is provided with a waist-shaped hole on two edges. The fourth support is connected to the surface of the workbench 1 through the horizontal waist-shaped hole by a bolt, and the third support 7 is connected to the fourth support through the vertical waist-shaped hole by a bolt. Through this structure, the spatial position of the third support 7 can be adjusted, thereby facilitating the assembly of the sensor.

[0036] Specifically, a column is installed at the lower end of the workbench 1, and the column is installed on a bottom plate. The bottom plate is arranged on the ground through a shock-absorbing foot. A digital-to-analog converter is installed between the workbench 1 and the bottom plate. The industrial all-in-one machine is electrically connected with the sensor through the digital-to-analog converter.

[0037] The specific use method of the sleeve-shaped workpiece wall thickness and inner and outer circle coaxiality detection device is as follows:

[0038] (1) Place the workpiece into the detection device, and the inner hole is in contact with the four first positioning members 201, and the end face is in contact with the two second positioning members 202, so as to stably position the workpiece on the workbench 1;

[0039] (2) Measure the initial value through the industrial all-in-one machine, then rotate 60 degrees and measure again, and measure 6 times in total at 360 degrees. At this time, the size of the wall thickness and the inner and outer circle coaxiality can be measured and calculated through the industrial all-in-one machine.

[0040] The sleeve-shaped workpiece wall thickness and inner and outer circle coaxiality detection device has the following advantages:

[0041] (1) Convenient to measure, and the measurement replaces the detection of the wall thickness ruler, improves the detection accuracy and efficiency, and the detection repeatability meets the measurement requirements;

[0042] (2) Quick measurement, and the measurement replaces the detection of the three coordinates, reduces the measurement waiting time, and improves the production efficiency.

[0043] (3) High universality, one set of device can detect multiple specifications of workpieces (stainless steel bushings of pressure pumps).

[0044] The above is only an embodiment of the present application, and the common knowledge of specific structures and properties in the scheme is not described in detail, the ordinary skilled person in the art knows all the ordinary technical knowledge in the technical field of the present application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply conventional experimental means before that date, the ordinary skilled person in the art can improve and implement the present scheme under the inspiration given in the present application, and some typical known structures or known methods should not be an obstacle for the ordinary skilled person in the art to implement the present application. It should be pointed out that, for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the present application.

Claims

1. A device for detecting the wall thickness and coaxiality of the inner and outer circles of a sleeve-shaped workpiece, characterized in that, The utility model relates to a workbench and a positioning mechanism and a detection mechanism thereof. The utility model discloses a workbench and a positioning mechanism and a detection mechanism thereof. The first positioning member is in contact with the inner hole wall of the workpiece to limit the position. The first positioning member supports the inner hole wall of the workpiece at different orientations. At least two first positioning members support the inner hole wall of the workpiece at the same orientation. The utility model further discloses a first support and a second support.

2. The detection device of claim 1, wherein, The first positioning member is adjustably connected to the first support, and the second positioning member is adjustably connected to the second support.

3. The detection device of claim 2, wherein, The detection mechanism comprises a sensor and a processor.

4. The detection device of claim 3, wherein, The sensor and the processor are electrically connected.

5. The detection device of claim 1, wherein The utility model further discloses a third support. The third support is adjustably connected to the workbench.

6. The detection device of claim 5, wherein, The second positioning member has a rotatable positioning end.

7. The detection device of claim 6, wherein ​ ​ 8. The detection device of claim 7, wherein, ​ 9. The detection device of claim 1, wherein, ​

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