CN114754723B

CN114754723B - Groove measuring device

Info

Publication number: CN114754723B
Application number: CN202210673851.7A
Authority: CN
Inventors: 庆克昆; 蔡明元
Original assignee: Nanjing Tops Automation Equipment Co ltd
Current assignee: Nanjing Tops Automation Equipment Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-09-20
Anticipated expiration: 2042-06-15
Also published as: CN114754723A

Abstract

The application discloses groove measuring device, this groove measuring device include base, swinging arms and measuring staff, the base includes base member and supporting part, the swinging arms includes the body of rod, and the link of this body of rod is around the first axis S1 that extends on transverse direction X swingably install in the supporting part, the contact is installed to the one end of measuring staff, and the other end is around the second axis S2 that extends on longitudinal direction Y swingably install in the link, install on the base member and be used for measuring body of rod swing position is in order to obtain the first measuring element of the degree of depth parameter of slot at longitudinal direction Y, install on the body of rod and be used for measuring the swing position of measuring staff is in order to obtain the second measuring element of slot at transverse direction X' S position parameter. According to the technical scheme of this application, can realize the detection to the position and the degree of depth of slot simultaneously on horizontal direction X and longitudinal direction Y.

Description

Groove measuring device

Technical Field

The present application relates to the field of measurement, and more particularly, to a trench measuring device.

Background

Grooves are commonly used mating structures in the mechanical field. For example, the belt wheel and the belt wheel shaft can be matched through a groove and a protrusion on the workpiece assembling surface to realize synchronous rotation. In order to ensure the assembly success rate and the equipment reliability, various parameters of the groove need to be detected before assembly.

Conventionally, different measuring devices are required for measuring different parameters of the groove, such as at least one detecting device for measuring the depth of the groove, and at least one detecting device for measuring the coaxiality and the position of the groove. The traditional measuring mode is high in measuring cost and low in measuring efficiency.

Therefore, how to provide a measuring device for simultaneously measuring the depth and the position of the trench becomes a technical problem to be solved in the art.

Disclosure of Invention

In view of the above, the present application proposes a trench measuring device to enable detection of the position and depth of a trench in both the lateral direction X and the longitudinal direction Y.

According to the application, a groove measuring device is proposed, this groove measuring device includes base, swinging arms and measuring staff, the base includes base member and supporting part, the swinging arms includes the body of rod, the link of this body of rod around the first axis S1 that extends on transverse direction X swingably install in the supporting part, the contact is installed to the one end of measuring staff, the other end around the second axis S2 that extends on longitudinal direction Y swingably install in the link, install on the base member and be used for measuring the body of rod pendulum position is in order to obtain the first measuring element of the degree of depth parameter of slot at longitudinal direction Y, install on the body of rod and be used for measuring the pendulum position of measuring staff is in order to obtain the second measuring element of the position parameter of slot at transverse direction X.

Preferably, the contacts are arranged along the longitudinal direction Y, the contacts having a shape matching the groove to be measured.

Preferably, the length direction of the groove, the transverse direction X and the longitudinal direction Y are perpendicular to each other.

Preferably, the measuring rod is fixedly provided with an extension rod, the extension rod extends in a direction back to the contact in parallel with the measuring rod, and the second measuring element is used for indirectly measuring the swinging state of the measuring rod relative to the swinging rod by measuring the swinging position of the extension rod.

Preferably, a first elastic module is connected between the connecting end of the swing rod and the supporting portion of the base, and the connecting end can be elastically mounted on the supporting portion in a deflection manner under the action of elastic force of the first elastic module; and/or a second elastic module is connected between the measuring rod and the connecting end, and the measuring rod can be elastically installed on the connecting end in a deflection way under the action of elastic force of the second elastic module.

Preferably, the first elastic module comprises a first mounting block and a second mounting block which are arranged at intervals, and a plurality of elastic pieces which are connected between the first mounting block and the second mounting block without interfering with each other, and the first axis S1 passes through the plurality of elastic pieces; the first mounting block is mounted to the support portion, and the second mounting block is mounted to the connecting end.

Preferably, the number of the elastic pieces of the first elastic module is two, and the two elastic pieces extend perpendicularly to each other.

Preferably, the second elastic module comprises an elastic body and two reset rods; the first end of the elastic body is arranged at the connecting end, the second end of the elastic body is arranged at the measuring rod, and an elastically deformable thin part is arranged between the first end and the second end; the reset rod is arranged on one of the measuring rod and the connecting end and elastically contacts the other one; the two reset rods are respectively positioned on two sides of the thin portion.

Preferably, a spring element is connected between the base body and the rod body and is used for providing an elastic force for enabling the rod body to approach or depart from the base body; the base body is provided with a one-way driver which is used for driving the rod body to swing towards the direction of overcoming the elastic force of the spring piece.

Preferably, the base is fitted with a damper acting on the rod body for providing a resistance force during oscillation of the rod body.

According to the technical scheme of the application, during the groove measuring process, the swinging rod swings relative to the base so as to match the contact with the groove. In the case of the contact touching the bottom of the groove, the first measuring element measures the deflection position of the lever body of the oscillating lever, so that a detection of the depth of the groove in the longitudinal direction Y is achieved. Meanwhile, the second measuring element detects whether the measuring rod deflects under the interference of the side wall of the groove on the contact, so that the position of the groove is detected in the transverse direction X. And through changing the measuring point position, compare the testing result of first measuring element and second measuring element under the different position respectively, can also judge the axiality of slot.

Additional features and advantages of the present application will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate an embodiment of the invention and, together with the description, serve to explain the invention. In the drawings:

FIG. 1 is a perspective view of a groove measuring device according to a preferred embodiment of the present application;

FIG. 2 is a perspective view of another perspective of the groove measuring device;

FIG. 3 is a side view of a groove measuring device;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a bottom view of the groove measuring device;

FIG. 6 is an enlarged view of the portion B of FIG. 5;

FIG. 7 is a schematic diagram of a trench measuring device.

Detailed Description

The terms of orientation such as "transverse direction" and "longitudinal direction" referred to in the present application are described in the directions shown in the drawings, wherein "transverse direction" represents the X direction shown in the drawings and "longitudinal direction" represents the Y direction shown in the drawings. It should be understood that the above directional terms are described for clearly indicating the relative position relationship of the technical solutions of the present application, and the arrangement of the products carrying the technical solutions of the present application may not be limited to the directional relationships shown in the drawings of the present application, so the above directional terms do not limit the protection scope of the present application.

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

The present application provides a groove measuring device including a base, a swinging lever, and a measuring bar 120, the depth of a groove being measured by swinging of the swinging lever on a longitudinal defence line Y, the position of the groove in a transverse direction X being detected by swinging of the measuring bar 120 relative to the swinging lever in the transverse direction X. As shown in fig. 1 and 2, the base includes a base 101 and a support 102, the swing lever includes a lever body 111, a connection end 112 of the lever body 111 is swingably mounted to the support 102 about a first axis S1 extending in the transverse direction X, one end of the measuring lever 120 is mounted with a contact 121, and the other end is swingably mounted to the connection end 112 about a second axis S2 extending in the longitudinal direction Y. Wherein, a first measuring element 131 for measuring the swing position of the rod body 111 to obtain the depth parameter of the groove in the longitudinal direction Y is installed on the base body 101, and a second measuring element 132 for measuring the swing position of the measuring rod 120 to obtain the position parameter of the groove in the transverse direction X is installed on the rod body 111, so that the device can respectively measure the groove in the transverse direction X and the longitudinal direction Y by the contact 121, as shown in fig. 7.

According to the groove measuring device, the base separates the swing lever from the base 101 through the support portion 102, leaving a swing space of the swing lever therebetween, the first measuring unit is located in the space and mounted on the base 101 to measure the swing position of the lever body 111, and the swing position of the stylus 121 in the longitudinal direction Y can be derived from the measurement value obtained by the first measuring unit, thereby achieving measurement of the groove depth in the longitudinal direction Y. In order to improve the measurement accuracy, the distance between the projection position of the first measurement element 131 on the rod body 111 and the connection end 112 is preferably greater than the length of the measuring rod 120, so that the swing arm length of the measured point is greater than the swing arm length of the contact, the ratio of the measured value to the actual value is improved, and a more accurate measurement result is obtained. It will be appreciated that the directions of the first axis S1 and the second axis S2 may be interchanged, that is, the device can still achieve the measurement purpose after the swinging directions of the swinging rod and the measuring rod 120 are interchanged.

On the other hand, the second measuring element 132 may be mounted on the rod body 111 close to the measuring rod 120 to directly measure the swing amplitude of the measuring rod 120, or preferably, the measuring rod 120 is fixedly mounted with an extension rod 122, and the extension rod 122 extends parallel to the measuring rod 120 in a direction away from the contact 121. When the measuring rod 120 swings around the second axis S2, the extension rod 122 is close to or far away from the rod body 111, and the second measuring unit can indirectly measure the swing state of the measuring rod 120 relative to the swing rod (detect whether the swing condition exists or measure the swing amplitude) by measuring the swing position of the extension rod 122 at a position far away from the measuring rod 120.

As shown in fig. 2, during the measurement process, the length direction, the transverse direction X and the longitudinal direction Y of the trench are preferably perpendicular to each other, the contact 121 of the trench measurement apparatus is attached to the sidewall of the trench in the width direction in the transverse direction X to measure the position condition of the trench, and the contact 121 abuts against the bottom of the trench in the longitudinal direction Y to measure the depth condition of the trench. It is understood that the length direction of the groove refers to the standard length direction of the groove, which does not exclude the possibility of the groove having an error (machining position or coaxiality) during machining, and the position error of the groove in the transverse direction X can be determined by measuring the swing state by the measuring rod 120 of the present apparatus. As shown in fig. 3, the contacts 121 are preferably arranged in the longitudinal direction Y, depending on the orientation of the contacts 121 in the longitudinal direction Y to determine on which side of the longitudinal direction Y of the channel the device is located when measuring. The contact 121 preferably has a shape matching the groove to be measured so that the contact 121 can fit the side walls on both sides in the width direction of the groove as much as possible. The end of the contact 121 is preferably an arc surface or a taper surface according to the common cross-sectional shape of the groove.

The deflection of the rod body 111 and the measuring rod 120 can be realized by a hinged connection mode, or preferably realized by the deformation of an elastic deformation structure, so as to reduce the measurement error caused by the fit clearance of the structure. Specifically, the elastically deforming structure may be a first elastic module and a second elastic module described below. As shown in fig. 3 and 5, a first elastic module is preferably connected between the connection end 112 of the swing lever and the support portion 102 of the base, so that the connection end 112 is elastically attached to the support portion 102 in a biased manner under the elastic force of the first elastic module. Similarly, a second elastic module is preferably connected between the measuring rod 120 and the connecting end 112, and the measuring rod 120 is elastically mounted on the connecting end 112 in a manner of deflecting under the elastic force of the second elastic module.

As shown in fig. 3 and 4, the first elastic module includes a first mounting block 141 and a second mounting block 142 arranged at intervals, and a plurality of elastic pieces 143 connected between the first mounting block 141 and the second mounting block 142 without interfering with each other (without direct contact between the elastic pieces), and the first axis S1 passes through the plurality of elastic pieces 143. According to the first elastic module, since the projections of the plurality of elastic pieces 143 extending in different directions in the lateral direction X are equivalent to intersect the first axis S1, the first mounting block 141 and the second mounting block 142 can be swung relative to each other as much as possible about the first axis S1. The number of the elastic pieces 143 of the first elastic module is preferably two, and the two elastic pieces 143 preferably extend perpendicular to each other. Preferably, the first mounting block 141 is mounted to the support portion 102 and the second mounting block 142 is mounted to the connecting end 112 to enable resilient swinging of the swing lever relative to the base.

As shown in fig. 5 and 6, the second elastic module includes an elastic body 151 and two restoring rods 152. The first end 153 of the elastic body 151 is mounted on the connecting end 112, and the second end 154 of the elastic body 151 is mounted on the measuring bar 120, so that the elastic deformation of the elastic body 151 can realize the deflection motion. In order to accurately control the deflection axis, an elastically deformable thin portion 155 is provided between the first end 153 and the second end 154, and the thin portion 155 is bent and deformed when the spindle 120 deflects with respect to the connecting end 112. Preferably, as shown in fig. 6, the thickness of the middle of the thin portion 155 is smaller than the thickness of the both ends, and the second axis S2 passes through the middle of the thin portion 155. The reset rod 152 is an elastic push rod, the reset rod 152 is installed on one of the measuring rod 120 and the connecting end 112 and elastically contacts the other, and the two reset rods 152 are respectively located at two sides of the thin portion 155, so that the measuring rod 120 maintains the pointing direction. When the spindle is interfered in the transverse direction X to cause deflection, the spindle 120 overcomes the elastic force of the reset lever 152 to bend and deform the thin portion 155, thereby achieving deflection.

Although the first elastic module is disposed between the support portion 102 and the connecting end 112 and the second elastic module is disposed between the connecting end 112 and the measuring bar 120 in the above embodiments, it is understood that any one of the structural forms of the first elastic module and the second elastic module may be employed between the support portion 102 and the connecting end 112 and between the connecting end 112 and the measuring bar 120 to implement the elastic yawing motion.

The stylus 121 is required to be closely matched with the groove during the measurement process of the groove measuring device, and as shown in fig. 3, a spring member 103 is preferably connected between the base 101 and the rod 111, and the spring member 103 for providing the elastic force to make the rod 111 close to the base 101 or the spring member 103 for providing the elastic force to make the rod 111 far from the base 101 is selected according to the relative positions of the groove and the measuring device. Preferably, in the view shown in fig. 3, the contact 121 points downwards in the longitudinal direction Y, the spring element 103 providing a spring force that moves the rod 111 away from the base 101 while swinging the contact 121 downwards until it touches the bottom of the groove. The base 101 is preferably further provided with a unidirectional actuator 104 (cylinder, electric push rod, etc.) for driving the rod 111 to swing in a direction against the elastic force of the spring member 103, so as to drive the contact 121 to maintain a state away from the groove to be measured in a non-measuring state. In order to reduce the impact between the structures during the swing of the swing lever by the elastic force of the spring member 103 or the driving force of the one-way driver 104, the base 101 is preferably provided with a damper 105 acting on the rod 111 for providing a resistance force during the swing of the rod 111 to limit the swing speed of the swing lever by the resistance force.

According to the groove measuring device of the preferred embodiment of the present application, during the measurement, the groove measuring device is preferably movable in the direction perpendicular to the transverse direction X and the longitudinal direction Y to be able to measure a plurality of points in the groove length direction, and it is possible to judge whether the extending direction and the coaxiality of the groove meet the standards or not based on the measurement results of the first measuring element 131 and the second measuring element 132 at different points. When measuring at any measuring point, the one-way driver 104 firstly releases the rod body 111, so that the rod body 111 is pushed away from the base body 101 by the elastic force of the spring element 103, and the contact 121 at the end of the measuring rod 120 moves downwards until the contact touches the bottom of the groove. During the process of the contact 121 entering the groove, the groove side wall interferes with the contact 121 to cause the measuring rod 120 to swing relative to the swinging rod, so that when the contact 121 moves to the position, the first measuring element and the second measuring element simultaneously acquire the detection results of the contact in the transverse direction X and the longitudinal direction Y. Depending on the type of measuring element (distance sensor, proximity switch, etc.), the detection result can be a comparison result compared with a standard or an actual measurement value.

The preferred embodiments of the present application have been described in detail above, but the present application is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the technical idea of the present application, and these simple modifications all belong to the protection scope of the present application.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in the present application.

In addition, any combination of the various embodiments of the present application can be made, and the same should be considered as the disclosure of the present invention as long as the combination does not depart from the spirit of the present application.

Claims

1. A groove measuring device comprising a base, a swing lever and a measuring rod (120), characterized in that,

the base comprises a base body (101) and a support part (102), the swinging rod comprises a rod body (111), a connecting end (112) of the rod body (111) is arranged on the support part (102) in a swinging mode around a first axis S1 extending in the transverse direction X, one end of the measuring rod (120) is provided with a contact (121), and the other end of the measuring rod is arranged on the connecting end (112) in a swinging mode around a second axis S2 extending in the longitudinal direction Y,

a first measuring element (131) for measuring the swing position of the rod body (111) to obtain the depth parameter of the groove in the longitudinal direction Y is arranged on the base body (101), and a second measuring element (132) for measuring the swing position of the measuring rod (120) to obtain the position parameter of the groove in the transverse direction X is arranged on the rod body (111);

the length direction, the transverse direction X and the longitudinal direction Y of the groove are mutually vertical;

a first elastic module is connected between a connecting end (112) of the swinging rod and the supporting part (102) of the base, and the connecting end (112) can be elastically installed on the supporting part (102) in a deflection way under the action of elastic force of the first elastic module; and/or

A second elastic module is connected between the measuring rod (120) and the connecting end (112), and the measuring rod (120) can be elastically installed on the connecting end (112) in a deflection way under the action of elastic force of the second elastic module;

the first elastic module comprises a first mounting block (141) and a second mounting block (142) which are arranged at intervals, and a plurality of elastic sheets (143) which are connected between the first mounting block (141) and the second mounting block (142) in a non-interference mode, wherein the first axis S1 penetrates through the plurality of elastic sheets (143);

the first mounting block (141) is mounted to the support portion (102), and the second mounting block (142) is mounted to the connection end (112).

2. Groove measuring device according to claim 1, characterized in that the contact (121) is arranged in the longitudinal direction Y, which contact (121) has a shape matching the groove to be measured.

3. Groove measuring device according to claim 1, characterized in that the measuring rod (120) is fixedly mounted with an extension rod (122), which extension rod (122) extends parallel to the measuring rod (120) in a direction away from the contact (121), and the second measuring element (132) is adapted to indirectly measure the swing state of the measuring rod (120) relative to the swing rod by measuring the swing position of the extension rod (122).

4. The groove measuring device according to claim 1, wherein the number of the spring pieces (143) of the first elastic module is two, and the two spring pieces (143) extend perpendicular to each other.

5. Groove measuring device according to claim 1, characterized in that the second elastic module comprises an elastic body (151) and two reset rods (152); wherein,

a first end (153) of the elastic body (151) is mounted on the connecting end (112), a second end (154) of the elastic body (151) is mounted on the measuring rod (120), and an elastically deformable thin part (155) is arranged between the first end (153) and the second end (154);

the reset rod (152) is installed on one of the measuring rod (120) and the connecting end (112) and elastically contacts the other;

the two reset rods (152) are respectively positioned at two sides of the thin part (155).

6. Groove measuring device according to claim 1,

a spring piece (103) is connected between the base body (101) and the rod body (111), and the spring piece (103) is used for providing an elastic force for enabling the rod body (111) to approach or depart from the base body (101);

and a one-way driver (104) for driving the rod body (111) to swing towards the direction overcoming the elastic force of the spring piece (103) is arranged on the base body (101).

7. A groove measuring device according to claim 6, characterized in that the base (101) is fitted with a damper (105) acting on the shaft (111) for providing a resistance force during oscillation of the shaft (111).