CN216694914U - Universal measuring instrument for detecting inner diameter of part - Google Patents

Abstract

The application relates to a universal measuring instrument for detecting the inner diameter of a part. The universal meter includes: n detection devices and detection platforms; the detection device comprises a contact probe, a measuring arm, a displacement sensor and a supporting rod; the measuring arm comprises a horizontal movable platform and a positioning arm; the positioning arm is arranged on the supporting rod, and the horizontal movable platform is movably connected with the positioning arm; the displacement sensor is connected with the positioning arm; the contact probe is arranged at one end of the horizontal movable platform, which is close to the detection position of the detection platform, is vertical to the horizontal movable platform and penetrates through the detection platform at the detection position; and a lifting device is arranged below the supporting rod of each detection device and used for adjusting the height of the supporting rod of each detection device. The scheme that this application provided can carry out the internal diameter to the not co-altitude position of the part that awaits measuring and detect, promotes and detects the precision, can detect the part that awaits measuring of different models, enlarges the applicable detection range of universal measuring appearance.

Description

Universal measuring instrument for detecting inner diameter of part

Technical Field

The application relates to general measurement appearance technical field especially relates to a general measurement appearance that is used for part internal diameter to detect.

Background

At present, the ubiquitous part internal diameter of domestic compressor trade, the straightness that hangs down detect the problem that all need send separately to examine, at the actual testing process, because part model is numerous, need to change different appearance and detect the part of different models, change appearance cycle length, detection efficiency is low, seriously influences the production efficiency of product, and the appearance acquisition cost height that just corresponds the polytypic part, occupy production space, and the universalization degree is low.

In the prior art, in patent publication No. CN211717343U (a pneumatic measuring device for measuring the size of an aperture and the verticality), it is proposed to detect the inner diameter and the verticality of a workpiece simultaneously by using a pneumatic measurement method.

The above prior art has the following disadvantages:

the inner diameters of the parts to be detected at different height positions cannot be detected, errors exist easily in detection through pressure feedback, and the detection precision of the inner diameter of the parts to be detected is not improved. Therefore, it is necessary to develop a universal measuring instrument capable of detecting inner diameters of parts to be measured at different height positions.

SUMMERY OF THE UTILITY MODEL

For overcoming the problem that exists among the correlation technique, this application provides a general measurement appearance for part internal diameter detects, this a general measurement appearance for part internal diameter detects can carry out the internal diameter to the not co-altitude position of the part that awaits measuring and detect, promotes and detects the precision, can detect the part that awaits measuring of different models, enlarges general measurement appearance's suitable detection range.

The application provides a universal measurement appearance for part internal diameter detects includes:

n detection devices 1 and detection platforms 2, wherein N is an integer greater than zero;

the detection device 1 comprises a contact probe 11, a measuring arm 12, a displacement sensor 13 and a support rod 14;

the measuring arm 12 comprises a horizontal movable platform 121 and a positioning arm 122;

the positioning arm 122 is mounted on the supporting rod 14, and the horizontal movable platform 121 is movably connected with the positioning arm 122; the displacement sensor 13 is connected with the positioning arm 122;

the contact probe 11 is arranged at one end of the horizontal movable platform 121 close to the detection position 4 of the detection platform 2, and the contact probe 11 is vertical to the horizontal movable platform 121 and penetrates through the detection platform 2 at the detection position 4;

in N detection device 1, all be equipped with elevating gear 5 under each detection device 1's the bracing piece 14, elevating gear 5 is used for adjusting each detection device 1's the height of bracing piece 14 for each detection device 1's contact detecting head 11 can carry out the internal diameter detection to each high position of the part that awaits measuring respectively, and the internal diameter detection includes internal diameter measurement and straightness that hangs down detects.

In one embodiment, the universal meter for inner diameter detection of parts further comprises a support table 3;

a bearing support 6 is connected between the support table 3 and the detection table 2, and the bearing support 6 is perpendicular to the support table 3 and the detection table 2;

a bearing shaft head 61 is arranged on the inner wall of the bracket at one side of the bearing bracket 6 close to the support platform 3, and a vertical shaft 62 is connected between the inner wall of the bracket at one side of the bearing bracket 6 close to the detection platform 2 and the bearing shaft head 61;

a linear bearing 63 is arranged between the inner wall of the support at one side of the bearing support 6 close to the detection platform 2 and the bearing shaft head 61, and the vertical shaft 62 penetrates through a bearing hole of the linear bearing 63.

In one embodiment, a bearing connection flange 141 is provided on a side edge of the support rod 14, and a shaft through hole is provided in the bearing connection flange 141;

the bearing connecting flange 141 is disposed between the linear bearing 63 and the bearing spindle head 61, and the vertical shaft 62 penetrates the shaft through hole.

In one embodiment, a locking bracket 7 is connected to the side bracket of the bearing bracket 6, and a clamp 71 is fixed in the locking bracket 7;

the clamping parts of the clamp 71 are connected with two ends of the support rod 14 and used for locking and fixing the support rod 14.

In one embodiment, the support bar 14 is provided with a first electric slide rail 142 and a second electric slide rail 143, the first electric slide rail 142 and the second electric slide rail 143 are oppositely disposed on two sides of the surface of the support bar 14, and the surface of the support bar 14 is the surface of the support bar 14 facing the detection table 2;

the first electric slide rail 142 includes a first slide rail 1421 and a first slider 1422, the second electric slide rail 143 includes a second slide rail 1431 and a second slider 1432, and the positioning arm 122 is fixed on both the first slider 1422 and the second slider 1432.

In one embodiment, the detection table 2 is provided with M sinking grooves 21 and 2N track through grooves 22, where M is an integer greater than zero;

the length of the sinking groove 21 is longer than that of the through groove 22 of the track;

the M sinking grooves 21 are internally provided with reference alloy strips 23, and the reference alloy strips 23 are matched with the sinking grooves 21 in size and used for limiting the placement positions of the parts to be detected;

the contact probe 11 penetrates the rail through slot 22, so that the contact probe 11 can move in the direction of the rail through slot 22.

In one embodiment, the detection location 4 is a central hole of the detection station 2;

the central hole is communicated with 2N track through grooves 22;

a guide sleeve 24 is arranged on the central hole, and the guide sleeve 24 comprises a sleeve part 241 and a mounting part 242;

when the contact probe tip 11 is in the initial position, the contact probe tip 11 is exposed in the central hole and is located inside the sleeve portion 241.

In one embodiment, the side surface of the sleeve portion 241 is provided with 2N probe openings 2411, and the positions of the probe openings 2411 are located on the displacement trajectory of the contact probe 11;

a limiting through hole 2421 and a fixing through hole 2422 are formed in one side, far away from the sleeve portion 241, of the mounting portion 242, and the limiting through hole 2421 is used for being matched with a cylindrical pin to limit the guide sleeve 24; the fixing through hole 2422 is used for being matched with a fixing screw to fix the guide sleeve 24 on the detection table 2;

a mounting through groove 2423 which is parallel to the rail through groove 22 in the vertical direction is provided on one side of the mounting portion 242 close to the sleeve portion 241, and the mounting through groove 2423 communicates with the probe opening 2411.

The technical scheme provided by the application can comprise the following beneficial effects:

the positioning arm of the measuring arm is arranged on the supporting rod, the horizontal movable platform of the measuring arm is movably connected with the positioning arm, a contact probe is arranged at one end of the horizontal movable platform, which is close to the detection position of the detection platform, the contact probe is vertical to the horizontal movable platform and exposed out of the detection position, the displacement sensor is connected with the positioning arm, when the contact probe contacts the inner wall of the hole of the part to be detected when the inner diameter of the part to be detected is detected, the inner wall of the hole can generate pressure on a contact probe head, so that the horizontal movable platform moves, the displacement sensor can obtain the inner diameter data of the part to be detected and the deviation value of the inner diameter data and the inner diameter of a pre-calibrated standard part, the inner diameter detection can be performed on the parts to be detected in different models, the inner diameter detection efficiency and the inner diameter detection precision are improved, and the application detection range of the universal measuring instrument is expanded; through the height of elevating gear adjusting support pole for the contact detecting head can carry out the internal diameter detection to each high position of the part that awaits measuring respectively, ensures the detection precision of each high position, acquires the internal diameter data that different high positions can improve the precision that the straightness that hangs down detected, improves the accuracy that the internal diameter detected.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.

Fig. 1 is a schematic structural diagram of one detection device in a universal meter for detecting an inner diameter of a part according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a general-purpose meter for detecting an inner diameter of a part according to an embodiment of the present application after all detection devices are combined;

fig. 3 is a partial schematic structural diagram of a caliper in a universal meter for detecting an inner diameter of a part according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a universal measuring instrument for detecting an inner diameter of a part according to an embodiment of the present application, which is arranged between a detection table and a support table after all detection devices are combined;

fig. 5 is a schematic structural diagram illustrating a detection position in a detection station of a universal meter for detecting an inner diameter of a part according to an embodiment of the present application;

fig. 6 is a partial schematic structural view of a guide sleeve in a detection position of a detection station of a universal meter for inner diameter detection of parts according to an embodiment of the present application;

fig. 7 is a structural diagram illustrating a detection position of a detection station when a part to be detected is mounted on a universal measuring instrument for detecting an inner diameter of the part according to an embodiment of the present application;

FIG. 8 is a schematic flow chart of an embodiment of a method for detecting an inner diameter of a part according to the embodiment of the present application.

Detailed Description

Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Example one

In the actual detection process, because part model quantity is numerous, need to change different appearance and detect the part of different models, change appearance cycle length, detection efficiency is low, seriously influences the production efficiency of product, and the appearance acquisition cost height that corresponds multi-type part, occupies production space, and the universalization degree is low. The inner diameters of the parts to be detected at different height positions cannot be detected in the prior art, errors exist easily in detection through pressure feedback, and the detection precision of the inner diameter of the parts to be detected is not improved. Therefore, it is necessary to develop a universal measuring instrument capable of detecting inner diameters of parts to be measured at different height positions.

To solve the above problem, the embodiment of the present application provides a universal measuring instrument for detecting an inner diameter of a part, which can detect inner diameters of parts to be detected at different height positions, improve detection accuracy, detect parts to be detected in different models, and expand an application detection range of the universal measuring instrument.

The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 4, an embodiment of a universal meter for detecting an inner diameter of a part according to the embodiment of the present application includes:

the detection device comprises N detection devices 1 and detection tables 2, wherein N is an integer larger than zero, in the embodiment of the application, the number of the detection devices 1 is 3, the detection devices are divided into a top layer detection device, a middle layer detection device and a bottom layer detection device, and the inner diameter detection is respectively carried out on different height positions of a part to be detected, specifically, the top layer detection device detects the position, which is 0-6 mm away from the upper surface of an inner hole, in the inner hole of the part to be detected; the bottom layer detection device detects the position of the inner hole of the part to be detected, which is 0-6 mm away from the lower surface of the inner hole; the middle layer detection device detects the position between the detection positions of the top layer detection device and the bottom layer detection device. It is understood that the number of the detection devices 1 is various, and in practical applications, the number of the detection devices 1 is determined according to practical applications, and is not limited herein.

The detecting device 1 includes, but is not limited to, a contact probe head 11, a measuring arm 12, a displacement sensor 13 and a support rod 14, wherein the measuring arm 12 is a measuring instrument used in the field of mechanical engineering, in the embodiment of the present application, a pen-type probe measuring arm can be used, and the precision can reach 2um, it is understood that in practical applications, other forms of measuring arms can be used for measuring, and the present invention is not limited thereto. In this embodiment, the measuring arm 12 includes a horizontal movable platform 121 and a positioning arm 122, the positioning arm 122 is installed on the supporting rod 14, a precise displacement transmission mechanism is provided inside the positioning arm 122, the horizontal movable platform 121 is movably connected to the positioning arm 122, and the displacement sensor 13 is connected to the positioning arm 122, it can be understood that, when the horizontal movable platform 121 displaces relative to the positioning arm 122, the displacement can be transmitted to the displacement sensor 13 through the precise displacement transmission mechanism inside the positioning arm 122, so that the displacement sensor 13 can sense the displacement and convert a physical signal of the displacement into an electrical signal.

Contact detecting head 11 sets up in the one end that horizontal movable platform 121 is close to detection station 2's detection position 4, and contact detecting head 11 just exposes at detection position 4 with horizontal movable platform 121 is perpendicular, and it can be understood that, when detecting the internal diameter of the part that awaits measuring, when contact detecting head contacted the downthehole wall of the part that awaits measuring, this downthehole wall can produce pressure to the contact detecting head for horizontal movable platform takes place to remove.

In N detection device 1, all be equipped with elevating gear 5 under each detection device 1's the bracing piece 14, elevating gear 5 is used for adjusting each detection device 1's the height of bracing piece 14 for each detection device 1's contact detecting head 11 can carry out the internal diameter detection to each high position of the part that awaits measuring respectively, in this application embodiment, elevating gear 5 can adopt the support electric jar, and in practical application, elevating gear 5 can adopt other equipment to realize raising and lowering functions, does not do the only limited here.

The inner diameter detection comprises inner diameter measurement and verticality detection, wherein the verticality detection can be obtained by calculation through a verticality calculation formula according to the actual inner diameter size obtained by the displacement sensor 13.

The following beneficial effects can be seen from the first embodiment:

the positioning arm of the measuring arm is arranged on the supporting rod, the horizontal movable platform of the measuring arm is movably connected with the positioning arm, a contact probe is arranged at one end of the horizontal movable platform close to the detection position of the detection platform, the contact probe is vertical to the horizontal movable platform and exposed out of the detection position, the displacement sensor is connected with the positioning arm, when the contact probe contacts the inner wall of the hole of the part to be detected when the inner diameter of the part to be detected is detected, the inner wall of the hole can generate pressure on a contact probe head, so that the horizontal movable platform moves, the displacement sensor can obtain the inner diameter data of the part to be detected and the deviation value of the inner diameter data and the inner diameter of a pre-calibrated standard part, the inner diameter detection can be performed on the parts to be detected in different models, the inner diameter detection efficiency and the inner diameter detection precision are improved, and the application detection range of the universal measuring instrument is expanded; through the height of elevating gear regulation bracing piece for the contact detecting head can carry out the internal diameter detection to each high position of the part that awaits measuring respectively, ensures the detection precision of each high position, and the internal diameter data that acquires different high positions can improve the precision that hangs down straightness and detect, improves the accuracy that the internal diameter detected.

Example two

For the convenience of understanding, the following provides an embodiment of a general-purpose measuring instrument for detecting the inner diameter of a part, and in practical applications, the precision of a detecting device in vertical motion is ensured through a linear bearing, and the fluency of a measuring arm in displacement during detection is improved through a motor-driven sliding rail.

Referring to fig. 1 to 3, a second embodiment of a universal meter for detecting an inner diameter of a part according to the embodiment of the present application is as follows:

in the embodiment of the present application, the universal measuring instrument further includes a support table 3 for supporting the universal measuring instrument. Supporting bench 3 and examine and be connected with bearing bracket 6 between the test table 2, bearing bracket 6 and supporting bench 3 with examine test table 2 perpendicular for detection device 1 can install when examining between test table 2 and the test table 3, can provide the space for detection device 1's vertical motion.

In order to ensure the precision of the detection device during vertical movement, a bearing shaft head 61 is arranged on the inner wall of a bracket at one side of the bearing bracket 6 close to the support table 3, a vertical shaft 62 is connected between the inner wall of a bracket at one side of the bearing bracket 6 close to the detection table 2 and the bearing shaft head 61, a linear bearing 63 is arranged between the inner wall of a bracket at one side of the bearing bracket 6 close to the detection table 2 and the bearing shaft head 61, and the vertical shaft 62 penetrates through a bearing hole of the linear bearing 63; the side edge of the support bar 14 is provided with a bearing connecting flange 141, a shaft through hole is formed in the bearing connecting flange 141, the bearing connecting flange 141 is arranged between the linear bearing 63 and the bearing shaft head 61, and the vertical shaft 62 penetrates through the shaft through hole. It will be appreciated that the vertical shaft 62 sequentially passes through the linear bearing 63, the bearing connecting flange 141 and the bearing spindle head 61 in a direction from the inner wall of the one side of the bearing bracket 6 close to the inspection table 2 to the inner wall of the one side of the bearing bracket 6 close to the support table 3, so that the linear bearing 63 can ensure that the bearing connecting flange 141 moves in the vertical direction during the vertical movement of the lifting device 5 guiding the support rod 14 to ascend or descend, thereby ensuring that the support rod 14 can strictly ascend or descend in the vertical direction.

The linear bearing 63 is a linear motion system, and is used for matching a linear stroke with a cylindrical shaft, and because the bearing ball is in point contact with the bearing outer sleeve, the steel ball rolls with the minimum friction resistance, so that the linear bearing has small friction and is relatively stable, does not change along with the bearing speed, and can obtain stable linear motion with high sensitivity and high precision. The supporting shaft head 61 is used for supporting the detecting device 1 when the lifting device 5 does not provide power for the supporting rod 14, and preventing the lifting device 5 from being crushed to cause unnecessary loss.

When the lifting device 5 guides the support rod 14 to a preset position, the detection device 1 needs to be fixed in position to ensure the stability of the inner diameter detection. In this embodiment, a locking bracket 7 is connected to a side bracket of the bearing bracket 6, a clamp 71 is fixed in the locking bracket 7, and a clamping portion of the clamp 71 is connected to two ends of the supporting rod 14, so as to lock and fix the supporting rod 14, so that the supporting rod 14 can be stably located in a preset height, and the detection device 1 is stable in an inner diameter detection process.

The lifting device 5 is arranged in a mounting rack fixed on the support platform 3, and the reliability and the stability of the detection device 1 are improved.

In the embodiment of the present application, the supporting rod 14 is provided with a first electric slide rail 142 and a second electric slide rail 143, the first electric slide rail 142 and the second electric slide rail 143 are oppositely disposed on two sides of the surface of the supporting rod 14, and the surface of the supporting rod 14 is the surface of the supporting rod 14 facing the detection table 2. Wherein, first electronic slide rail 142 contains first slide rail 1421 and first slider 1422, second electronic slide rail 143 contains second slide rail 1431 and second slider 1432, all be fixed with the location arm 122 on first slider 1422 and the second slider 1432, thereby make measuring arm 12 independently, move relatively, in order to adapt to the detection of the part that awaits measuring of the different internal diameters of different models, electronic slide rail can promote the smoothness degree for measuring arm 12's removal simultaneously, when measuring arm 12 reaches corresponding position, can lock the slide rail, thereby with measuring arm 12's rigidity, provide stable condition for the internal diameter testing process.

The following beneficial effects can be seen from the second embodiment:

the linear bearing is arranged in the bearing bracket, so that the bearing connecting flange can keep moving in the vertical direction in the ascending or descending process, the supporting rod can be ensured to strictly ascend or descend in the vertical direction, and the precision of the detection device in the vertical movement is ensured; the clamp is arranged at the two ends of the supporting rod, the first electric sliding rail and the second electric sliding rail which are opposite to each other are arranged on the surface of the supporting rod, stable conditions are provided for the detection device in the inner diameter detection process, the smoothness of the measuring arm in the displacement process in the detection process is improved, and the precision of inner diameter detection is improved.

EXAMPLE III

For the convenience of understanding, an embodiment of a universal measuring instrument for detecting the inner diameter of a part is provided below for explanation, in practical application, a guide sleeve is arranged at a detection position on a detection table for positioning a part to be detected, a sunken groove for limiting the guide sleeve and a track channel for contacting a detection head to pass through are further provided, so as to improve the detection accuracy of the inner diameter detection.

Referring to fig. 5 to 7, a third embodiment of the universal meter for detecting an inner diameter of a part according to the embodiment of the present application includes:

it leads to groove 22 to be equipped with M heavy groove 21 and 2N track of a M on the test table 2, and M is for being greater than zero integer, sets up 2N track and leads to groove 22 because it has two contact detecting heads 11 to correspond on a detection device, consequently, to N detection device, need set up 2N track and lead to groove 22 and satisfy the removal that contact detecting head 11 and not obstructed.

As shown in fig. 7, the length of the sinking groove 21 is longer than that of the through groove 22 of the rail, the M sinking grooves 21 are all provided with a reference alloy strip 23, and the size of the reference alloy strip 23 is matched with that of the sinking groove 21, so as to limit the placement position of the part to be detected, and prevent the part to be detected from rotating around the guide sleeve 24 to affect the inner diameter detection effect.

The contact probe head 11 extends through the track channel 22, so that the contact probe head 11 can move along the track channel 22 when the universal meter performs detection. The detection position is a central hole of the detection table 2, the central hole is communicated with the 2N rail through grooves 22, and a guide sleeve 24 is arranged on the central hole and used for positioning the part to be detected, wherein the guide sleeve 24 comprises a sleeve portion 241 and a mounting portion 242, when the contact probe 11 is at the initial position, the contact probe 11 is exposed in the central hole and is located inside the sleeve portion 241. Further, the side surface of the sleeve portion 241 is provided with 2N probe openings 2411, and the arrangement positions of the probe openings 2411 are located on the displacement trajectory of the contact probe 11, so that the contact probe 11 can move along the corresponding track through grooves 22 from the initial position in the sleeve portion 241 without being blocked by the guide sleeve 24 and the wall of the central hole.

In addition, an installation through groove 2423 which is parallel to the track through groove 22 in the vertical direction is arranged on one side, close to the sleeve portion 241, of the installation portion 242, the installation through groove 2423 is communicated with the probe opening 2411, a limiting through hole 2421 and a fixing through hole 2422 are arranged on one side, far away from the sleeve portion 241, of the installation portion 242, the limiting through hole 2421 is used for being matched with a cylindrical pin to limit the guide sleeve 24, and the fixing through hole 2422 is used for being matched with a fixing screw to fix the guide sleeve 24 on the detection platform 2, so that the installation portion can be positioned by means of the track through groove 22 and the cylindrical pin, the guide sleeve 24 is prevented from rotating, and further the guide sleeve 24 is prevented from moving left and right along the track through groove 22 through matching and fixing of the fixing screw and the fixing through hole 2422, and stability of inner diameter detection is influenced. Further, since the mounting groove 2423 is parallel to the rail groove 22 in the vertical direction, the mounting portion 242 does not obstruct the movement of the contact probe head 11.

The following beneficial effects can be seen from the third embodiment:

fix a position the part that awaits measuring through setting up guide sleeve on examining test table, and carry on spacingly to the part that awaits measuring through the benchmark alloy strip in the heavy groove, prevent that the part that awaits measuring from rotating, guide sleeve then realizes fixedly through the cooperation of spacing through-hole and cylindric lock and fixed through-hole and set screw's cooperation, prevent that guide sleeve's position from taking place the skew, thereby avoid driving the position of the part that awaits measuring and take place the skew, provide stability for the universal measuring instrument in the testing process, guarantee to detect the position and do not take place the skew, improve the detection precision that the internal diameter detected.

Example four

Corresponding to the above embodiments of the universal measuring instrument for detecting the inner diameter of the part, the present application also provides a method for detecting the inner diameter of the part, a universal measuring instrument implementation for detecting the inner diameter of the part based on any one of the above embodiments, and corresponding embodiments of the detecting method.

Referring to fig. 8, an embodiment of a method for detecting an inner diameter of a part according to an embodiment of the present application includes:

401. acquiring a factory reference size of a part model corresponding to a part to be detected;

the factory reference size refers to a reference value of a size of a part which is not detected after the produced part is produced, and can be obtained by obtaining the content of a part production batch.

402. Determining the type and standard part of the guide sleeve according to the factory reference size;

the factory reference dimension of the part includes, but is not limited to, an inner diameter, and assuming that the inner diameter of the part to be measured is 20 mm, a guide sleeve with a diameter of 20 mm and a standard part with an inner diameter of 20 mm are selected. It should be understood that the above data are only exemplary, and in practical applications, the data need to be selected according to practical applications, and are not limited herein.

403. Installing a guide sleeve on the detection platform, and installing a standard part on the periphery of the guide sleeve;

through set up guide sleeve and fix a position the part that awaits measuring on examining test table, the standard component is installed and can be avoided the standard component to take place the skew of position and the deflection of angle behind guide sleeve's periphery, for general measurement appearance provides stability in the testing process, guarantees that the detection position does not take place the skew, improves the detection precision that the internal diameter detected.

404. Starting a lifting device to adjust the height of the supporting rod to reach a preset height and locking the supporting rod through a clamp;

when the height of bracing piece reaches and predetermines the height, the clamp system ware is fixed with the bracing piece locking, avoids the high emergence of bracing piece to change once more, improves the stability that the internal diameter detected.

405. Starting the electric slide rail to drive the measuring arm to move;

start electronic slide rail and drive the measuring arm and remove, the contact detecting head on the measuring arm can follow the measuring arm and remove, and at the removal in-process, the probe opening that the contact detecting head can pass through the sleeve portion moves along the direction of track logical groove, and when the downthehole wall of contact detecting head contact standard component, the electronic slide rail of shut down and locking obtains the standard internal diameter of standard component through the displacement sensor on the measuring arm, and this measuring arm precision can reach 2 um. It can be understood that when the contact probe contacts the inner wall of the hole of the standard, the inner wall of the hole can generate a certain pressure on the contact probe, and the pressure can cause the horizontal movable platform to shift, at the moment, after the contact probe is stabilized, the current inner diameter deviation value is set to be 0, the current inner diameter size is set to be the standard inner diameter, and the standard verticality is calculated according to the standards of different height positions, so that the calibration step is completed.

406. And (5) disassembling the standard part and installing the part to be detected on the periphery of the guide sleeve for inner diameter detection.

In the embodiment of the application, the inner diameter detection comprises inner diameter measurement and verticality detection.

The standard part is disassembled, the part to be detected is installed on the periphery of the guide sleeve to be detected, quality judgment is carried out on the part to be detected according to a detection result, and the detection result comprises the actual inner diameter size and the actual inner diameter deviation value of the part to be detected.

It can be understood that, when the part that awaits measuring is installed in guide sleeve's periphery and is examined, with the standard component on the same ground, the hole inner wall of the part that awaits measuring also can produce certain pressure to the contact probe head, and this pressure also can lead to horizontal movable platform to take place the skew, and at this moment, after horizontal movable platform takes place the skew, can obtain the actual deviation value of the part that awaits measuring and difference and the actual internal diameter size between 0 to carry out the quality judgement to the part that awaits measuring.

If the actual inner diameter size is not matched with the standard inner diameter or the actual inner diameter deviation value is not zero, determining that the part to be measured is a bad part; if the actual inner diameter size is matched with the standard inner diameter or the actual inner diameter deviation value is zero, determining the actual verticality according to the actual inner diameter size, wherein the actual inner diameter size comprises a first actual inner diameter size, a second actual inner diameter size and a third actual inner diameter size; if the actual verticality is not matched with the standard verticality, determining that the part to be detected is a bad part; and if the actual verticality is matched with the standard verticality, determining that the part to be detected is a good part.

The following beneficial effects can be seen from the fourth embodiment:

the universal measuring instrument for detecting the inner diameters of the parts is calibrated, so that the universal measuring instrument can be suitable for detecting the parts with different types and different inner diameters, the calibration step is simple, the measuring instrument switching time during detection of the parts with different types and different inner diameters is reduced, the detection efficiency is improved, the detection coverage range is wide, and the detection cost is reduced; the inner diameter detection precision is high, and the production quality of parts is guaranteed, so that the quality of produced products is improved.

The aspects of the present application have been described in detail hereinabove with reference to the accompanying drawings. In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. Those skilled in the art should also appreciate that the acts and modules referred to in the specification are not necessarily required in the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application may be sequentially adjusted, combined, and deleted according to actual needs, and the modules in the device of the embodiment of the present application may be combined, divided, and deleted according to actual needs.

Furthermore, the method according to the present application may also be implemented as a computer program or computer program product comprising computer program code instructions for performing some or all of the steps of the above-described method of the present application.

Alternatively, the present application may also be embodied as a non-transitory machine-readable storage medium (or computer-readable storage medium, or machine-readable storage medium) having stored thereon executable code (or a computer program, or computer instruction code) which, when executed by a processor of an electronic device (or electronic device, server, etc.), causes the processor to perform part or all of the various steps of the above-described method according to the present application.

Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the applications disclosed herein may be implemented as electronic hardware, computer software, or combinations of both.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems and methods according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (8)

1. A universal meter for internal diameter detection of parts, comprising:

n detection devices (1) and detection platforms (2), wherein N is an integer greater than zero;

the detection device (1) comprises a contact probe (11), a measuring arm (12), a displacement sensor (13) and a support rod (14);

the measuring arm (12) comprises a horizontal movable platform (121) and a positioning arm (122);

the positioning arm (122) is arranged on the supporting rod (14), and the horizontal movable platform (121) is movably connected with the positioning arm (122); the displacement sensor (13) is connected with the positioning arm (122);

the contact probe (11) is arranged at one end of the horizontal movable platform (121) close to the detection position (4) of the detection platform (2), and the contact probe (11) is perpendicular to the horizontal movable platform (121) and penetrates through the detection platform (2) at the detection position (4);

among N detection device (1), all be equipped with elevating gear (5) under bracing piece (14) of each detection device (1), elevating gear (5) are used for adjusting the height of bracing piece (14) of each detection device (1) for each height position of part that awaits measuring can be carried out the internal diameter detection respectively to contact detecting head (11) of each detection device (1), the internal diameter detection includes internal diameter measurement and straightness detection that hangs down.

2. The universal meter for part inner diameter detection according to claim 1,

also comprises a support table (3);

a bearing support (6) is connected between the support table (3) and the detection table (2), and the bearing support (6) is perpendicular to the support table (3) and the detection table (2);

a bearing shaft head (61) is arranged on the inner wall of one side of the bearing support (6) close to the support table (3), and a vertical shaft (62) is connected between the inner wall of one side of the bearing support (6) close to the detection table (2) and the bearing shaft head (61);

a linear bearing (63) is arranged between the inner wall of the support at one side, close to the detection table (2), in the bearing support (6) and the bearing shaft head (61), and the vertical shaft (62) penetrates through a bearing hole of the linear bearing (63).

3. The universal meter for inner diameter detection of parts according to claim 2,

a bearing connecting flange (141) is arranged on the side edge of the supporting rod (14), and a shaft through hole is formed in the bearing connecting flange (141);

the bearing connecting flange (141) is arranged between the linear bearing (63) and the bearing shaft head (61), and the vertical shaft (62) penetrates through the shaft through hole.

4. The universal meter for inner diameter detection of parts according to claim 2,

a locking bracket (7) is connected to the side bracket of the bearing bracket (6), and a clamp (71) is fixed in the locking bracket (7);

the clamping part of the clamp (71) is connected with two ends of the supporting rod (14) and used for locking and fixing the supporting rod (14).

5. The universal meter for part inner diameter detection according to claim 1,

a first electric slide rail (142) and a second electric slide rail (143) are arranged on the supporting rod (14), the first electric slide rail (142) and the second electric slide rail (143) are oppositely arranged on two sides of the surface of the supporting rod (14), and the surface of the supporting rod (14) is the surface of the supporting rod (14) facing the detection table (2);

the first electric slide rail (142) comprises a first slide rail track (1421) and a first slide block (1422), the second electric slide rail (143) comprises a second slide rail track (1431) and a second slide block (1432), and the positioning arm (122) is fixed on each of the first slide block (1422) and the second slide block (1432).

6. The universal meter for part inner diameter detection according to claim 1,

the detection table (2) is provided with M sinking grooves (21) and 2N track through grooves (22), wherein M is an integer larger than zero;

the length of the sinking groove (21) is longer than that of the through groove (22) of the track;

reference alloy strips (23) are arranged in the M sinking grooves (21), and the sizes of the reference alloy strips (23) are matched with those of the sinking grooves (21) and used for limiting the placement positions of the parts to be detected;

the contact probe (11) penetrates through the rail through groove (22) so that the contact probe (11) can move along the direction of the rail through groove (22).

7. The universal meter for part inner diameter detection according to claim 6,

the detection position (4) is a central hole of the detection table (2);

the central hole is communicated with the 2N track through grooves (22);

a guide sleeve (24) is arranged on the central hole, and the guide sleeve (24) comprises a sleeve part (241) and a mounting part (242);

when the contact probe head (11) is in an initial position, the contact probe head (11) is exposed in the central bore and is located within the sleeve portion (241).

8. The universal meter for part inner diameter detection according to claim 7,

the side surface of the sleeve part (241) is provided with 2N probe openings (2411), and the arrangement position of the probe openings (2411) is positioned on the displacement track of the contact probe (11);

one side, far away from the sleeve part (241), of the mounting part (242) is provided with a limiting through hole (2421) and a fixing through hole (2422), and the limiting through hole (2421) is used for being matched with a cylindrical pin to limit the guide sleeve (24); the fixing through hole (2422) is used for being matched with a fixing screw to fix the guide sleeve (24) on the detection table (2);

an installation through groove (2423) which is parallel to the track through groove (22) in the vertical direction is formed in one side, close to the sleeve part (241), of the installation part (242), and the installation through groove (2423) is communicated with the probe opening (2411).

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