Hole inner diameter measuring device

Abstract

The invention relates to a device for measuring the inner diameter of a hole. The mounting base can move in the first linear direction, the mounting base comprises a reference plane, and the mounting base can rotate around a first axis; the pneumatic measuring heads rotate and move along with the mounting seat, can rotate relative to the mounting seat around a rotating shaft which is perpendicular to the axis of the pneumatic measuring heads and parallel to the reference plane, and can rotate relative to the mounting seat until the axis is perpendicular to the reference plane or parallel to the reference plane; when the pneumatic measuring head rotates along with the mounting base in the state that the axis is parallel to the reference plane, the pneumatic measuring head can rotate until the axis coincides with a reference axis parallel to the first linear direction. According to the device, the measurement work of an inner hole with multiple sections of different inner diameters can be completed at one station through a plurality of different pneumatic measuring heads, the number of the arranged stations of the pneumatic measuring heads is reduced so as to reduce the occupied space, the switching of the pneumatic measuring heads can be completed in a smaller space, and the occupied space of the device is further reduced.

Description

Technical Field

[0001] The invention relates to the field of parts detection technology, and in particular to a hole inner diameter measuring device. Background Art

[0002] In various types of mechanical equipment, there are various parts with inner holes. The accuracy of the inner holes of the parts will affect the matching accuracy with the counterparts and is related to the operating stability of the mechanical equipment. Therefore, the accuracy detection of the inner holes is extremely important.

[0003] The detection of the inner diameter of the part is generally carried out by a pneumatic probe. In order to improve the measurement accuracy, the difference between the diameter of the pneumatic probe and the inner diameter of the inner hole to be measured must be within an appropriate range. Figure 1 The part shown has two sections of inner holes with different inner diameters. When inspecting the inner hole, two pneumatic probes of different specifications are required to measure the two sections of the inner hole with different inner diameters. At present, pneumatic probes of different specifications are usually installed in different stations, and the measured part is transported through multiple stations by a conveying device. At each station, the inner diameter of a section of the inner hole of the part is measured by the corresponding pneumatic probe.

[0004] For parts whose inner holes have multiple sections with different inner diameters, multiple pneumatic probes need to be set up accordingly, and each pneumatic probe is set up in a corresponding workstation, resulting in a large number of workstations and a large space occupation. Summary of the invention

[0005] Based on the above description, the present invention provides a hole inner diameter measuring device to solve the problem in the related technology that for parts with inner holes having multiple sections with different inner diameters, multiple pneumatic probes need to be set up accordingly, and each pneumatic probe is set in a work station, resulting in a large number of work stations and a large space occupation.

[0006] The technical solution of the present invention to solve the above technical problems is as follows:

[0007] The present application provides a hole inner diameter measuring device, and the technical solution adopted is as follows:

[0008] A hole inner diameter measuring device, comprising:

[0009] Pedestal;

[0010] A mounting seat connected to the base and movable relative to the base along a first linear direction, the mounting seat comprising a reference plane parallel to the first linear direction, and the mounting seat being rotatable relative to the base around a first axis perpendicular to the reference plane;

[0011] At least two pneumatic probes are connected to the mounting base, and the pneumatic probes rotate around a first axis and move along a first straight line direction with the mounting base. At least two pneumatic probes are circumferentially spaced along the first axis. The pneumatic probes can rotate relative to the mounting base around a rotation axis that is perpendicular to its own axis and parallel to the reference plane. The pneumatic probes can rotate relative to the mounting base until the axis is perpendicular to the reference plane or the axis is parallel to the reference plane. When the pneumatic probes rotate with the mounting base in a state where the axis is parallel to the reference plane, the pneumatic probes can rotate until the axis coincides with the reference axis parallel to the first straight line direction.

[0012] Preferably, at least two of the pneumatic probes are connected to the mounting seat via connecting seats respectively, and the connecting seats can rotate relative to the mounting seat so that the pneumatic probes rotate relative to the mounting seat, and a first driving member for driving the connecting seat to rotate is provided between the connecting seat and the mounting seat.

[0013] Preferably, the pneumatic measuring head can rotate around its own axis relative to the connecting seat.

[0014] Preferably, the base is provided with a support member for supporting the part to be measured, the support member and the mounting seat are spaced apart in the first straight line direction, and when the axis of the pneumatic probe coincides with the reference axis, the pneumatic probe is located between the support member and the mounting seat in the first straight line direction.

[0015] Preferably, the support member is movable relative to the base along a first linear direction.

[0016] Preferably, the mounting seat is connected to the base via a connecting structure, the connecting structure includes a support seat, a second driving member and a third driving member, the support seat can move relative to the base along a first straight line direction, the second driving member connects the base and the support seat, and is used to drive the support seat to move relative to the base along the first straight line direction, the mounting seat is connected to the support seat via the second driving member, and the second driving member is used to drive the mounting seat to rotate relative to the support seat around a first axis.

[0017] Preferably, two first travel switches are provided on the base, and the two first travel switches are spaced apart along the first straight line direction. A triggering member for triggering the first travel switch is connected to the support seat, and when the first travel switch is triggered, a signal is sent to the control system, and when the control system receives the first travel switch signal, the second driving member is controlled to stop running.

[0018] Preferably, the third driving member comprises a rotary cylinder.

[0019] Compared with the prior art, the technical solution of the present application has at least the following beneficial technical effects:

[0020] 1. The present application sets a mounting seat and at least two pneumatic probes. When a pneumatic probe rotates relative to the mounting seat until the axis is parallel to the reference plane and rotates with the mounting seat until the axis coincides with the reference axis, the pneumatic probe is in a working state and can be moved along a first straight line direction by the mounting seat to drive the pneumatic probe to move and insert into the inner hole of the part to measure the inner hole diameter. By rotating the mounting seat around the first axis, different pneumatic probes can be in a working state where the axis coincides with the reference axis, so that different pneumatic probes can be switched to measure inner holes of different diameters, that is, at one station, multiple different pneumatic probes can be used to complete the measurement of an inner hole with multiple sections of different inner diameters, thereby reducing the number of stations where the pneumatic probes are arranged to reduce the space occupied. Furthermore, by arranging the pneumatic probe to rotate relative to the mounting base, when switching between different pneumatic probes, all the pneumatic probes can be rotated until the axis is perpendicular to the reference plane, that is, the axis of the pneumatic probe is parallel to the first axis, thereby reducing the space required for the pneumatic probe to rotate around the first axis with the mounting base, and the switching of the pneumatic probe can be completed in a smaller space, further reducing the space occupied by the device.

[0021] 2. The pneumatic probe of the present application is connected to the mounting seat via a connecting seat, and the connecting seat is driven to rotate via a first driving member, which facilitates the control of the rotation of the pneumatic probe. The pneumatic probe can rotate around its own axis relative to the connecting seat, so that the pneumatic probe can rotate relative to the measured part when entering the inner hole for measurement, thereby improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The accompanying drawings are background technology of the present invention;

[0023] Figure 2 A schematic diagram of the structure of a hole inner diameter measuring device provided in an embodiment of the present invention;

[0024] Figure 3 A schematic structural diagram of a hole inner diameter measuring device from another perspective provided in an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1. Base; 2. Mounting seat; 3. Pneumatic probe; 4. Connecting seat; 5. First driving member; 6. Support seat; 7. Second driving member; 8. Third driving member; 9. First travel switch; 10. Trigger member; 11. Second travel switch; 12. Support member; 13. Linear cylinder. DETAILED DESCRIPTION

[0027] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0029] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0030] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0031] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0032] Reference Figure 2-3 As shown, an embodiment of the present application provides a hole inner diameter measuring device, which includes a base 1, a mounting base 2 and at least two pneumatic probes 3.

[0033] Reference Figure 2-3As shown, the base 1 is used to be fixed on the detection table, the mounting base 2 is connected to the base 1, and the pneumatic probe 3 is connected to the mounting base 2. The mounting base 2 can move relative to the base 1 along the first straight line direction, the mounting base 2 includes a reference plane parallel to the first straight line direction, and the mounting base 2 can rotate relative to the base 1 around a first axis perpendicular to the reference plane. The pneumatic probe 3 rotates around the first axis and moves along the first straight line direction with the mounting base 2, at least two pneumatic probes 3 are circumferentially spaced along the first axis, the pneumatic probe 3 can rotate relative to the mounting base 2 around a rotation axis perpendicular to its own axis and parallel to the reference plane, the pneumatic probe 3 can rotate relative to the mounting base 2 until the axis is perpendicular to the reference plane or the axis is parallel to the reference plane, and when the pneumatic probe 3 rotates with the mounting base 2 in a state where the axis is parallel to the reference plane, it can rotate until the axis coincides with the reference axis parallel to the first straight line direction.

[0034] Through the above arrangement, when a pneumatic probe 3 rotates relative to the mounting seat 2 until the axis and the reference plane are parallel, and rotates with the mounting seat 2 until the axis and the reference axis coincide, the pneumatic probe 3 is in a working state, and can be moved along the first straight line direction by the mounting seat 2, driving the pneumatic probe 3 to move and insert into the inner hole of the part to measure the inner hole diameter. By rotating the mounting seat 2 around the first axis, different pneumatic probes 3 can be in a working state where the axis and the reference axis coincide, so that different pneumatic probes 3 can be switched to measure inner holes of different diameters, that is, at one station, a plurality of different pneumatic probes 3 can be used to complete the measurement of an inner hole with multiple sections of different inner diameters, thereby reducing the number of stations where the pneumatic probes 3 are arranged to reduce the space occupied. Furthermore, by arranging that the pneumatic probe head 3 can rotate relative to the mounting base 2, when switching different pneumatic probe heads 3, all the pneumatic probe heads 3 can be rotated until the axis is perpendicular to the reference plane, that is, the axis of the pneumatic probe head 3 is parallel to the first axis, thereby reducing the space required for the pneumatic probe head 3 to rotate around the first axis with the mounting base 2, and the switching of the pneumatic probe head 3 can be completed in a smaller space, further reducing the space occupied by the device.

[0035] Reference Figure 2-3 As shown, in order to realize the rotatable installation of the pneumatic probe 3 on the mounting seat 2, at least two pneumatic probes 3 are respectively connected to the mounting seat 2 through the connecting seat 4, and the connecting seat 4 can rotate relative to the mounting seat 2 to make the pneumatic probe 3 rotate relative to the mounting seat 2. A first driving member 5 for driving the connecting seat 4 to rotate is provided between the connecting seat 4 and the mounting seat 2. Specifically, the first driving member 5 can be a rotary cylinder, which is fixed on the mounting seat 2, and the connecting seat 4 is connected to the output shaft of the rotary cylinder, so as to drive the connecting seat 4 to rotate through the rotary cylinder, thereby realizing the function of driving the pneumatic probe 3 to rotate relative to the connecting seat 4, and facilitating automatic control.

[0036] Reference Figure 2-3As shown, when the pneumatic probe 3 is installed on the connecting seat 4, the pneumatic probe 3 can rotate around its own axis relative to the connecting seat 4. Specifically, the connecting seat 4 is provided with a mounting hole, and the outer cover of the pneumatic probe 3 is provided with a fixing sleeve, which is located in the mounting hole and fixed to the connecting seat 4. The pneumatic probe 3 passes through the fixing sleeve and is connected to the fixing sleeve through a plane bearing, so that the pneumatic probe 3 can rotate relative to the fixing sleeve and the connecting seat 4.

[0037] Reference Figure 2-3 As shown, further, the reference axis is set to intersect with the first axis, and when the pneumatic probe 3 is set, the axis of the pneumatic probe 3 intersects with the first axis when the axis of the pneumatic probe 3 is parallel to the reference plane, thereby ensuring that each pneumatic probe 3 can be rotated with the mounting seat 2 until the axis coincides with the reference axis when the axis of the pneumatic probe 3 is parallel to the reference plane.

[0038] In this embodiment, two pneumatic measuring heads 3 are provided for illustration, and the two pneumatic measuring heads 3 are respectively located at two opposite sides of the mounting base 2 .

[0039] Reference Figure 2-3 As shown, further, the mounting seat 2 is connected to the base 1 through a connecting structure, and the connecting structure includes a support seat 6, a second driving member 7 and a third driving member 8. The support seat 6 can move relative to the base 1 along the first straight line direction. The second driving member 7 connects the base 1 and the support seat 6 and is used to drive the support seat 6 to move relative to the base 1 along the first straight line direction. The mounting seat 2 is connected to the support seat 6 through the second driving member 7, and the second driving member 7 is used to drive the mounting seat 2 to rotate relative to the support seat 6 around the first axis. Specifically, the second driving member 7 adopts a linear module, which is fixed on the base 1, and the support seat 6 is fixed to the slide of the linear module, so as to drive the support seat 6 to move along the first straight line direction through the linear module; the third driving member 8 adopts a rotary cylinder, which is fixed on the support seat 6, and correspondingly, the mounting seat 2 is fixed to the output shaft of the rotary cylinder, so as to drive the mounting seat 2 to rotate through the rotary cylinder.

[0040] Reference Figure 2-3As shown, in order to achieve precise control of the moving stroke of the support seat 6, two first stroke switches 9 are provided on the base 1, and the two first stroke switches 9 are spaced apart along the first straight line direction. A trigger member 10 for triggering the first stroke switch 9 is connected to the support seat 6. When the first stroke switch 9 is triggered, a signal is sent to the control system. When the control system receives the signal of the first stroke switch 9, the second drive member 7 is controlled to stop running. In the design, the two first stroke switches 9 are respectively set at the starting position and the working position of the moving path of the support seat 6. When the support seat 6 moves to the corresponding position, the corresponding first stroke switch 9 is triggered. After receiving the signal of the first stroke switch 9, the control system controls the second drive member 7 to stop moving, thereby achieving precise control of the stroke of the support seat 6. In this embodiment, the first stroke switch 9 is fixed on the base of the linear module for illustration, and the trigger member 10 is fixed on the support seat 6 using a trigger sheet.

[0041] Reference Figure 2-3 As shown, further, a second stroke switch 11 is fixed on the base of the linear module, and the second stroke switch 11 is located between the two first stroke switches 9, and the trigger member 10 is also used to trigger the second stroke switch 11. The second stroke switch 11 is close to the starting position of the moving path of the support seat 6, and the second stroke switch 11 is configured to send a signal to the control system when triggered by the trigger member 10, and the control system controls the pneumatic probe 3 to start or close according to the signal of the second stroke switch 11. Specifically, in the working stroke of the support seat 6, when the support seat 6 moves from the starting position to the working position to trigger the second stroke switch 11, the control system controls the pneumatic probe 3 to start, so that when the support seat 6 reaches the working position, the inner hole diameter is measured by the pneumatic probe 3, and conversely, in the reset stroke of the support seat 6, when the second stroke switch 11 is triggered when the support seat 6 moves from the working position to the starting position, the control system controls the pneumatic probe 3 to close.

[0042] Reference Figure 2-3As shown, further, a support member 12 for supporting the measured part is provided on the base 1, and the support member 12 and the mounting seat 2 are spaced apart in the first linear direction, and when the axis of the pneumatic probe 3 coincides with the reference axis, the pneumatic probe 3 is located between the support member 12 and the mounting seat 2 in the first linear direction. The support member 12 can move relative to the base 1 along the first linear direction. In this embodiment, the support member 12 is a cylindrical support block coaxial with the reference axis, so as to stably support the measured part through it; and the support member 12 is configured to be movable relative to the base 1 along the first linear direction, and correspondingly, a linear cylinder 13 is installed on the base 1 to drive the support member 12 to move. Specifically, during the design, the measuring device of the present application can be matched with the turntable conveying device, so that the support 12 and the mounting seat 2 are respectively located on both sides of the turntable in the vertical direction, and the measured part is conveyed between the support 12 and the pneumatic probe 3 on the mounting seat 2 by the turntable conveying device, and the measured part is supported on one side of the turntable by the support 12 to ensure that the pneumatic probe 3 on the other side of the turntable can be smoothly inserted into the inner hole of the measured part for measurement. Through this setting, the hole inner diameter measuring device of the present application can be matched with other equipment to realize the automation of part detection work, thereby improving work efficiency.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hole inner diameter measuring device, characterized in that: include: Base (1); A mounting seat (2) connected to the base (1) and movable relative to the base (1) along a first straight line direction, the mounting seat (2) comprising a reference plane parallel to the first straight line direction, and the mounting seat (2) being rotatable relative to the base (1) around a first axis perpendicular to the reference plane; At least two pneumatic probes (3) are connected to the mounting seat (2), the pneumatic probes (3) rotate around a first axis and move along a first straight line direction with the mounting seat (2), the at least two pneumatic probes (3) are circumferentially spaced along the first axis, the pneumatic probes (3) can rotate relative to the mounting seat (2) around a rotation axis that is perpendicular to its own axis and parallel to the reference plane, the pneumatic probes (3) can rotate relative to the mounting seat (2) until the axis is perpendicular to the reference plane or the axis is parallel to the reference plane, and when the pneumatic probes (3) rotate with the mounting seat (2) in a state where the axis is parallel to the reference plane, the pneumatic probes (3) can rotate until the axis coincides with the reference axis parallel to the first straight line direction.

2. The hole inner diameter measuring device according to claim 1, characterized in that: At least two of the pneumatic probes (3) are connected to the mounting seat (2) via connecting seats (4), respectively; the connecting seats (4) can rotate relative to the mounting seat (2) so that the pneumatic probes (3) rotate relative to the mounting seat (2); and a first driving member (5) for driving the connecting seat (4) to rotate is provided between the connecting seat (4) and the mounting seat (2).

3. The hole inner diameter measuring device according to claim 2, characterized in that: The pneumatic measuring head (3) can rotate around its own axis relative to the connecting seat (4).

4. The hole inner diameter measuring device according to claim 1, characterized in that: The base (1) is provided with a support member (12) for supporting the part to be measured, the support member (12) and the mounting seat (2) are spaced apart in a first straight line direction, and when the axis of the pneumatic probe (3) coincides with the reference axis, the pneumatic probe (3) is located between the support member (12) and the mounting seat (2) in the first straight line direction.

5. The hole inner diameter measuring device according to claim 4, characterized in that: The support member (12) can move relative to the base (1) along a first linear direction.

6. The hole inner diameter measuring device according to claim 1, characterized in that: The mounting seat (2) is connected to the base (1) via a connecting structure, the connecting structure comprising a support seat (6), a second driving member (7) and a third driving member (8), the support seat (6) can move relative to the base (1) along a first straight line direction, the second driving member (7) connects the base (1) and the support seat (6) and is used to drive the support seat (6) to move relative to the base (1) along the first straight line direction, the mounting seat (2) is connected to the support seat (6) via the second driving member (7), and the second driving member (7) is used to drive the mounting seat (2) to rotate relative to the support seat (6) around a first axis.

7. The hole inner diameter measuring device according to claim 6, characterized in that: The base (1) is provided with two first travel switches (9), the two first travel switches (9) are spaced apart and distributed along a first straight line direction, the support seat (6) is connected with a trigger member (10) for triggering the first travel switch (9), the first travel switch (9) sends a signal to a control system when being triggered, and the control system controls the second driving member (7) to stop running when receiving the signal from the first travel switch (9).

8. The hole inner diameter measuring device according to claim 6, characterized in that: The third driving member (8) comprises a rotary cylinder.

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