CN110919571A - Clamping detection device for bushing - Google Patents

Clamping detection device for bushing Download PDF

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Publication number
CN110919571A
CN110919571A CN202010105707.4A CN202010105707A CN110919571A CN 110919571 A CN110919571 A CN 110919571A CN 202010105707 A CN202010105707 A CN 202010105707A CN 110919571 A CN110919571 A CN 110919571A
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CN
China
Prior art keywords
clamping
bushing
peripheral surface
bush
actuating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010105707.4A
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Chinese (zh)
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CN110919571B (en
Inventor
张永峰
蔡明元
巫杰
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Nanjing Taipusen Automation Equipment Co Ltd
Original Assignee
Nanjing Taipusen Automation Equipment Co Ltd
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Application filed by Nanjing Taipusen Automation Equipment Co Ltd filed Critical Nanjing Taipusen Automation Equipment Co Ltd
Priority to CN202010105707.4A priority Critical patent/CN110919571B/en
Publication of CN110919571A publication Critical patent/CN110919571A/en
Application granted granted Critical
Publication of CN110919571B publication Critical patent/CN110919571B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical means
    • G01B5/0002Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured

Abstract

The utility model relates to a detection area specifically discloses a centre gripping detection device of bush, and this centre gripping detection device is including the fixture who is used for centre gripping and location bush and the detecting element who is used for detecting the bush under the state of centre gripping bush, and fixture includes: the supporting shaft is provided with a hole cavity extending from the end face of the working end along a first axial direction; and an actuating mechanism provided to the support shaft for retracting or expanding the clamp in a radial direction to switch between a released state in which a radial dimension of the clamp is not larger than an inner diameter of the bush and a clamped state in which the radial dimension of the clamp is larger than the inner diameter of the bush. According to the technical scheme of this application, realize treating that detect the bush elastically centre gripping detects.

Description

Clamping detection device for bushing
Technical Field
The application relates to the field of detection, more specifically relates to a centre gripping detection device of bush.
Background
Bushings are important parts in the mechanical field, especially for automotive engines. Typically, the liner needs to be accurately installed into the bore structure (e.g., cylinder head) and has a relatively high dimensional accuracy that would otherwise interfere with proper engine operation, requiring accurate measurements of liner dimensions and concentricity.
Because the outer peripheral surface of the bushing is basically cylindrical, when the bushing is measured, a mode of clamping the inner peripheral surface of the bushing is usually adopted, and interference between a measuring mechanism and a clamping mechanism is avoided to influence a measuring result.
Conventionally, the bushing is usually sleeved on the mounting shaft, and then the sensor or the probe of the detection unit contacts the surface of the bushing to collect parameters such as size and coaxiality. The conventional detection method is generally to perform detection after the mounting shaft and the bushing are rigidly connected, and requires that the mounting shaft and the detection unit have relatively high coaxiality, otherwise, the sensor or the probe of the detection unit may be damaged in the process of contacting the bushing with the sensor or the probe, and the detection result is affected.
Therefore, how to overcome the above-mentioned drawbacks of the conventional solutions at least to some extent is a technical problem to be solved in the art.
Disclosure of Invention
In view of this, the present application provides a clamping detection device for a bushing to reduce the risk of damage to a sensor caused by hard contact between the bushing and the sensor of the detection device, and improve detection efficiency.
According to the present application, there is provided a clamping detection device of a bush, including a clamping mechanism for clamping and positioning the bush and a detection unit for detecting the bush in a state of clamping the bush, the clamping mechanism including: the supporting shaft is provided with a hole cavity extending from the end face of the working end along a first axial direction; and an actuating mechanism provided to the support shaft for retracting or expanding the clamp in a radial direction to switch between a released state and a clamped state, the actuating mechanism including: an actuating rod axially movably disposed in said bore, said actuating rod including an inner end located within said bore, an outer end extending beyond or adjacent said working end face, and a rod body located between said inner and outer ends; and an actuating disc comprising a disc portion arranged adjacent to the working end face and fixedly connected to an outer end of the actuating rod, and a ring portion extending in a first axial direction at a circumferential edge of the disc portion for cooperation with the clamping member; wherein in the release state, the radial dimension of the clamp is no greater than the inner diameter of the bushing, and in the clamp state, the radial dimension of the clamp is greater than the inner diameter of the bushing.
Preferably, the actuating mechanism further comprises a biasing member disposed between the inner end of the actuating rod and the working end face for applying a biasing force in a first axial direction to the actuating rod.
Preferably, the inner end of the actuating lever is formed as a piston portion, an outer side surface of the piston portion is slidably fitted with the inner side surface of the bore, and a radial dimension of the piston portion is larger than a radial dimension of the rod body; a stopping part protruding inwards in the radial direction is arranged at the port of the hole cavity, and the outer side surface of the rod body is matched with the inner side surface of the stopping part in a sliding manner; the biasing member is a spring member which is sleeved on the rod body and is pressed between the stopping portion and the piston portion.
Preferably, the disc portion of the actuating disc is coaxially arranged with the outer end of the actuating lever and is detachably fixedly connected thereto; or the tail end of the ring part is provided with a conical surface which is contacted with the clamping piece, and the radial dimension of the conical surface is gradually reduced along the first axial direction.
Preferably, the outer peripheral surface of the working end of the supporting shaft is provided with a conical surface with gradually increased radial size along the first axial direction, and the clamping piece is sleeved on the conical surface; wherein the ring part moves towards the conical surface, so that the clamping piece gradually expands under the support of the conical surface to enter the clamping state; the ring part moves away from the conical surface, so that the clamping piece gradually contracts under the support of the conical surface to enter the releasing state.
Preferably, the outer peripheral surface of the working end of the support shaft includes a first outer peripheral surface that is adjacent to the working end surface and slidably fits with the inner peripheral surface of the ring portion, and the conical surface is located between the first outer peripheral surface and a second outer peripheral surface having an outer diameter larger than that of the first outer peripheral surface.
Preferably, the actuating mechanism includes a driving ring, which is axially movably sleeved on the outer circumferential surface of the supporting shaft and is fixedly connected with the actuating rod.
Preferably, the clamping mechanism comprises a base, and the supporting shaft is rotatably mounted on the base; the base is provided with a positioning device used for judging the rotating position of the supporting shaft relative to the base.
Preferably, the positioning device comprises: the mounting seat is fixedly or movably arranged on the base; the positioning probe extends out of the mounting seat along the radial direction and points to the outer peripheral surface of the working end of the supporting shaft under the action of elastic force, or the base is provided with a driving cylinder which is sleeved on the supporting shaft at intervals and is mounted on the base in an axially sliding manner, and the end part of the driving cylinder is matched with the end part of the driving ring in a face-to-face manner, or the base is movable in the axial direction.
According to the technical scheme of this application, the annular holder cover that is made by elastic material establishes on the back shaft to make radial size grow and diminish through actuating mechanism, thereby can utilize the holder to realize elasticity ground centre gripping to the inner peripheral surface of bush, avoid waiting to detect the bush and lead to the condition that the sensor damaged with detection device's sensor hard contact, improve detection efficiency.
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 an overall sectional view of a clamping mechanism of a clamping detection device of a bush according to a preferred embodiment of the present application;
FIGS. 2 and 3 are enlarged partial views of FIG. 1;
fig. 4 and 5 are perspective views illustrating a clamping mechanism of a clamping detection device of a bush according to a preferred embodiment of the present application.
Detailed Description
The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 and 2, the clamping detection device for a bush provided by the present application includes a clamping mechanism for clamping and positioning the bush and a detection unit for detecting the bush in a state of clamping the bush, the clamping mechanism including: a support shaft 10, the outer peripheral surface of the working end of the support shaft 10 is sleeved with a clamping piece 11 used for matching with the inner peripheral surface of the bushing, the clamping piece 11 is a ring-shaped piece and is made of elastic material, and the support shaft 10 is provided with a hole cavity 101 extending from the end surface of the working end along a first axial direction D1; and an actuating mechanism provided to the support shaft 10 for retracting or expanding the clamp 11 in a radial direction to switch between the released state and the clamped state, the actuating mechanism including: an actuation rod 12, the actuation rod 12 being axially movably disposed within the bore 101, the actuation rod 12 including an inner end 121 located within the bore 101, an outer end 122 extending out of or adjacent the working end face, and a stem 123 located between the inner end 121 and the outer end 122; and an actuating disc 13, the actuating disc 13 comprising a disc portion 131 arranged adjacent to the working end face and fixedly connected to the outer end 122 of the actuating rod 12, and a ring portion 132 extending in a first axial direction at a circumferential edge of the disc portion 131 and for engagement by the clamp 11; wherein in the released state the radial dimension of the clamping member 11 is not larger than the inner diameter of the bushing and in the clamped state the radial dimension of the clamping member 11 is larger than the inner diameter of the bushing.
In the conventional clamping mechanism for the bush, when the bush is clamped through the inner periphery of the bush, due to almost rigid connection, the requirement for coaxiality between the bush and the corresponding detection unit is very high when the bush is detected, damage to the sensor or the probe is easily caused, and the detection efficiency is affected.
In the technical scheme of the application, the annular clamping piece 11 made of the elastic material is sleeved on the supporting shaft 10, and the radial size of the clamping piece 11 is increased and decreased through the actuating mechanism, so that the clamping state that the radial size of the clamping piece 11 is larger than the inner diameter of the bushing and the releasing state that the radial size of the clamping piece 11 is not larger than the inner diameter of the bushing can be realized, and the inner circumferential surface of the bushing can be elastically clamped by the clamping piece 11. Therefore, when the clamping mechanism of the application is used for clamping the bushing 200 for detection, the bushing has the function of fine adjustment of the self position due to the existence of elasticity, so that the over-high requirement on the coaxiality between the bushing and the detection unit is reduced, and the difficulty of detection operation is reduced. Moreover, the possibility of damage caused by hard contact with the test element during testing of the bushing is reduced.
The detection unit comprises a sensor, and can be arranged on the same frame with the clamping mechanism or on different frames respectively according to different working conditions. In the detection process, the detection unit and the clamping mechanism move relatively, so that the bushing is close to or in contact with a sensor or a probe of the detection unit, and the parameters to be detected are obtained. To obtain the different parameters, the sensors of the detection unit may include a force sensor, a position sensor, a vibration sensor, and the like.
The support shaft 10 is the main base member of the support bushing. As shown in fig. 1 and 2, the upper end of the supporting shaft 10 is used as a working end, and a clamping member 11 for engaging with the inner peripheral surface of the bushing is sleeved on the outer peripheral surface of the supporting shaft. The support shaft 10 may be fixedly mounted to a base or a frame, and preferably the support shaft 10 may rotate and reciprocate in an axial direction. This will be described below.
An actuating mechanism is provided to the support shaft 10 and cooperates with the clamp 11 to enable the clamp 11 to be retracted or expanded in a radial direction to switch between a released state and a clamped state. For example, in the initial state of the clamping mechanism, the clamping member 11 is in a released state in which the bush 200 to be clamped can be placed on the working end and the clamping member 11 is located inside the bush 200; subsequently, the actuating mechanism can be used to convert the clamping member 11 from the releasing state to the clamping state in which the radial dimension of the clamping member 11 is larger than the inner diameter of the bushing, and further, the outer circumferential surface of the clamping member 11 is used to apply circumferentially distributed radially outward acting force to the inner circumferential surface of the bushing 200, so that reliable clamping and fixing are realized; after the completion of the checking operation, the retainer 11 is restored from the retained state to the released state in which the radial dimension of the retainer 11 is not larger than the inner diameter of the bush, thereby allowing the bush 200 to be disengaged from the above-mentioned working end.
The actuation mechanism may take a variety of forms. For example, according to one embodiment of the present application (not shown), the actuating mechanism comprises an actuating sleeve axially movably fitted over the outer peripheral surface of the support shaft 10; the peripheral surface of the working end of the supporting shaft 10 is provided with a conical surface gradually increasing in radial size towards the end surface of the working end, and the clamping piece 11 is sleeved on the conical surface.
In this embodiment, the actuating sleeve is mounted on the outer circumferential surface of the support shaft 10 so as to be axially movable relative thereto, for example, in a direct axial sliding connection or by means of a screw fit or the like. While a conical surface having an outer diameter gradually increasing toward the end surface (i.e., gradually increasing toward the outer diameter in the second axial direction D2 shown in fig. 2) is provided on the outer peripheral surface of the working end of the support shaft 10. Therefore, when the actuating sleeve moves towards the conical surface, i.e. towards the end surface of the working end in the second axial direction D2, the actuating sleeve pushes the supporting member 11 to move along the conical surface towards the end surface of the working end, so that the clamping member 11 is gradually expanded into the clamping state under the support of the conical surface. When the actuating sleeve is moved away from the conical surface, i.e. away from the end face of the working end in the first axial direction D1, the clamping element 11 is gradually contracted into the release state under the support of the conical surface and under its own elasticity. The actuation direction of the actuation sleeve in this embodiment is opposite to the actuation direction of the actuation mechanism in the embodiment shown in fig. 2, which will be described below.
According to a preferred embodiment of the present application, as shown in fig. 1 and 2, the support shaft 10 has a bore 101 extending from an end surface of the working end in the first axial direction D1. A major portion of the actuation mechanism may be disposed in this bore 101. In this embodiment, the actuation mechanism comprises: an actuation rod 12, the actuation rod 12 being axially movably disposed within the bore 101, the actuation rod 12 including an inner end 121 located within the bore 101, an outer end 122 extending out of or adjacent the working end face, and a rod 123 located between the inner end 121 and the outer end 122; and an actuating disc 13, the actuating disc 13 comprising a disc portion 131 arranged adjacent to the working end face and fixedly connected to the outer end 122 of the actuating rod 12, and a ring portion 132 extending in a first axial direction at a circumferential edge of the disc portion 131 and serving for cooperation with the clamping member 11.
In particular, the actuating rod 12 is axially movably located in the bore 101, the actuation disc 13 being fixedly and detachably arranged at the end (i.e. the outer end 122) of the actuating rod 12, preferably the actuation disc 13 being arranged coaxially with the support shaft 10, i.e. the disc portion 131 of the actuation disc 13 being arranged coaxially with and detachably and fixedly connected to the outer end 122 of said actuating rod 12. The outer periphery of the actuator disc 13 has a ring portion 132 extending along the first axial direction D1, so that the ring portion 132 is fitted over the outer periphery of the working end, and the circumferential end facing the first axial direction D1 directly faces the holder 11 to cooperate with the holder 11.
In this embodiment, when the actuating lever 12 moves in the first axial direction D1, the actuating lever 12 drives the ring portion 132 of the actuating disc 13 to push the clamping member 11 to move in the first axial direction D1, so as to enable the clamping member to enter the clamping state. And when the actuating lever 12 is moved in a second axial direction D2, opposite the first axial direction D1, the clamp may return to the released state.
The power source for actuating lever 12 may take many forms. For example, an air or hydraulic cylinder may be provided to drive the actuator rod 12 through a support shaft.
Or according to a preferred embodiment, as shown in fig. 2, the actuating mechanism comprises a driving ring 16, and the driving ring 16 is axially movably sleeved on the outer circumferential surface of the supporting shaft 10 and is fixedly connected with the actuating rod 12. Thus, the actuation of the actuation lever 12 can be controlled externally by the design of the drive ring 16. As shown in fig. 2, the drive ring 16 and the actuating lever 12 are connected to each other by a radial pin 161, and a through hole through which the pin 161 passes has a larger dimension in the axial direction than the radial dimension of the pin 161, thereby allowing the pin 161 to act in the axial direction relative to the support shaft. In embodiments designed with a drive ring 16, the actuation of the actuation rod 12, and thus the engagement of the ring portion 132 with the clamp 11, can be controlled by controlling the movement of the drive ring 16 in the axial direction.
As described above, in a preferred embodiment, the support shaft 10 may have a rotating action, so that the measurement of parameters of the bushing in a rotating dynamic state may be performed. In this case, since the drive ring 16 is connected with the support shaft 10, when the support shaft 10 rotates, the drive ring 16 also rotates. In order to transmit the axial force to the drive ring 16 relatively conveniently, as shown in fig. 2, the clamping mechanism of the clamping detection device of the bush preferably further comprises a base 20 to provide a mounting base for the rotatably supporting shaft 10 and its additional member (a member capable of rotating together with the supporting shaft). Therefore, it is preferable that a driving cylinder 30 is provided on the base 20, the driving cylinder 30 is fitted around the supporting shaft 10 with a space therebetween and is axially slidably mounted on the base 20, and an end of the driving cylinder 30 is fitted to an end of the driving ring 16 in a face-to-face manner. In this embodiment, a drive cylinder 30 is provided to the base 20, so that the drive cylinder 30 can drive the drive ring 16 (rotatable together with the support shaft 10) in the axial direction by controlling the movement of the drive cylinder 30 in the axial direction without making a rotational movement. Movement in the axial direction relative to the base 20 may be achieved by a cavity 24 between the drive cartridge 30 and the base 20. For example, pressurized gas or liquid can be introduced into the annular cavity 24 to move the drive cylinder 30 in the second axial direction D2, such that the end of the drive cylinder 20 pushes the end of the drive ring 16 to move the drive ring 16 in the second axial direction D2, which in turn actuates the actuator rod 12 to bring the clamp members into a clamped condition; when the pressure gas or liquid in the annular cavity 24 is discharged, the driving cylinder 30 can be reset under the action of the spring, and the clamping piece 11 is allowed to return to the releasing state.
As described above, the actuation rod 12 is axially movably disposed in the bore 101 of the support shaft 10. The reciprocating movement of the actuating rod 12 can be achieved by a driving force from the drive ring 16 in both axial directions, or by a driving force in one direction in combination with an elastic restoring force.
As shown particularly in fig. 2, the actuating mechanism further includes a biasing member 14, the biasing member 14 being disposed between the inner end 121 of the actuating lever 12 and the working end face for applying a biasing force to the actuating lever 12 in a first axial direction D1. By virtue of the provision of the biasing member 14, when the actuation lever 12 is not acted upon by an external source (e.g., the drive ring 16), the actuation lever 12 is always maintained retracted within the bore 101 in the first axial direction D1, thereby maintaining the circumferential end of the ring portion 132 in compression against the clamping member 11, such that the clamping member 11 is always in the clamped condition. With this arrangement, the driving force need only be supplied to the drive ring 16 when the clamp 11 is required to be in the released state, without always maintaining the driving force to be supplied to the drive ring 16. For example, when the clamp 11 is in the clamped state and clamps the bush 200, the driving force need not be maintained to the drive ring, but the biasing force of the biasing member 14 itself is utilized to maintain a reliable clamping of the bush.
The biasing member 14 may take a variety of forms, such as a rod-like member supported by an elastomeric material disposed within the bore 101. But preferably, as shown in fig. 2, the inner end 121 of the actuating lever 12 is formed as a piston portion having an outer side slidably engaged with the inner side of the bore, the radial dimension of the piston portion being larger than that of the rod body 123; a stopping part 102 protruding radially inwards is arranged at a port of the hole cavity 101, and the outer side surface of the rod body 123 is slidably matched with the inner side surface of the stopping part 102; the biasing member 14 is disposed between the stop portion 102 and the piston portion. In this embodiment, the inner end 121 of actuating rod 12 is formed with a radially larger piston portion which, on the one hand, cooperates with the inner side of bore 101 to guide actuating rod 12 and, on the other hand, can carry the biasing force of biasing member 14 and act on actuating rod 12. The stop portion 102 may provide a guide for the rod body 123 to move axially, while the biasing member 14 is disposed between the stop portion 102 and the piston portion, thereby providing a support basis for the biasing member 14. Preferably, the biasing member 14 is a spring member that is fitted around the rod 123 and pressed between the stopper portion 102 and the piston portion, as shown in fig. 2. Preferably, the piston portion and the inner side of the bore 101 have matching cross-sectional shapes, for example, both may be provided in a circular shape, and may also be provided in a rectangular or other polygonal shape.
As described above, the distal end of the ring portion 132 cooperates with the clamp 11 to urge the clamp into the clamped state. The end surface of the ring portion 132 may be perpendicular to the axial direction, and preferably, as shown in fig. 2 and 3, the end of the ring portion 132 is formed with a first conical surface 1321 contacting the holder 11, and the radial dimension of the first conical surface 1321 is gradually reduced in the first axial direction. Therefore, when the ring portion 132 pushes the clamp 11 in the first axial direction D1, it will act on the inner diameter portion of the annular clamp 11 first, and at the same time, with the movement of the ring portion 132 in the first axial direction D1, it can have a "scooping" effect on the clamp 11 to further facilitate the outward radial expansion of the clamp 11.
In addition, as shown in fig. 2 and 3, in order to facilitate the radial deformation of the supporting member 11, the outer circumferential surface of the working end of the supporting shaft 10 is provided with a second conical surface 15 having a radial size gradually increased along the first axial direction D1, and the clamping member 11 is fitted over the second conical surface 15. Therefore, the ring portion 132 moves toward the second conical surface 15, so that the clamping member 11 is gradually expanded into the clamping state under the support of the conical surface; when the ring portion 132 moves away from the second conical surface 15, the clamping member 11 is gradually contracted under the support of the conical surface by its own elasticity, and enters the release state.
Further preferably, as shown in fig. 3, the outer peripheral surface of the working end of the support shaft 10 includes a first outer peripheral surface 103 and a second outer peripheral surface 104, the first outer peripheral surface 103 is adjacent to the working end surface and slidably fitted with the inner peripheral surface of the ring portion 132, the second conical surface 15 is located between the first outer peripheral surface 103 and the second outer peripheral surface 104, and the outer diameter of the second outer peripheral surface 104 is larger than the outer diameter of the first outer peripheral surface 103. Therefore, by designing the first outer circumferential surface 103 and the second outer circumferential surface 104 having an outer diameter larger than that of the first outer circumferential surface 103, on one hand, the second conical surface 15 is formed therebetween, and on the other hand, the second outer circumferential surface 104 (preferably, the step 105 may be formed) can be used to cooperate with the bushing 200, so as to perform the function of positioning the bushing 200 in the circumferential direction and the axial direction, and to more accurately ensure that the clamped bushing is at the accurate detection position.
In addition, in order to determine the rotational position of the support shaft 10 (and the bush clamped by it) with respect to the base 20, said base 20 is preferably provided with positioning means to be able to ensure accurately the correct circumferential position of the bush with respect to the detection position, for example to align the hole in the bush with the corresponding probe or sensor at the detection position. The positioning device can have various forms, such as a proximity switch, a laser positioning device, and the like. But preferably, as shown in fig. 4 and 5, the positioning device includes: a mount 21 fixedly or movably provided to the base 20; and a positioning probe 22, wherein the positioning probe 22 extends from the mounting seat 21 in a radial direction and is directed to the outer peripheral surface of the working end of the supporting shaft 10 under the action of elastic force. In this embodiment, the positioning probe 22 is mounted to the mount 21 and can be pressed against the outer circumferential surface of the bush 200 in the radial direction, and is kept pressed against the outer circumferential surface of the bush 200 during the rotation of the support shaft 10, so that the rotational position of the bush 200 can be detected or determined. For example, when a radial hole is provided in the bushing 200, the tip of the positioning probe 22 may be dropped into the radial hole of the bushing, so that the rotational position of the bushing is known. The mounting seat 21 may be fixed to the base 20, or may be radially movably provided to the base 20 with respect to the support shaft 10, so as to be adapted to various types of positioning probes or bushes.
As described above, the support shaft 10 may have a rotational motion and an axial movement. In order to realize the above-mentioned operation of the supporting shaft, as shown in fig. 4 and 5, different drivers may be provided on the frame, for example, belt transmission in the figure is used to realize the initiative of the supporting shaft, and the hydraulic cylinder is used to realize the axial movement of the base 20, and further to drive the axial movement of the supporting shaft, so that the bush clamped by the clamping mechanism of the present application can be transferred to the detection position.
According to the above description, in the technical scheme of the application, the annular clamping piece made of the elastic material is sleeved on the supporting shaft, and the radial size of the clamping piece is increased and decreased through the actuating mechanism, so that the clamping state that the radial size of the clamping piece 11 is larger than the inner diameter of the bushing and the releasing state that the radial size of the clamping piece 11 is not larger than the inner diameter of the bushing can be realized, elastic clamping can be realized on the inner circumferential surface of the bushing by utilizing the clamping piece 11, the condition that the bushing to be detected is in hard contact with a sensor or a probe of the detection device to cause damage to the part is avoided, and the detection efficiency is improved.
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 (9)

1. A clamping detection device of the bushing, the clamping detection device comprises a clamping mechanism for clamping and positioning the bushing and a detection unit for detecting the bushing in a state of clamping the bushing,
wherein, fixture includes:
the supporting shaft (10), the peripheral surface of the working end of the supporting shaft (10) is sleeved with a clamping piece (11) used for being matched with the inner peripheral surface of the bush, the clamping piece (11) is a ring-shaped piece and is made of elastic materials, and the supporting shaft (10) is provided with a hole cavity (101) extending from the end surface of the working end along a first axial direction (D1); and
an actuating mechanism provided to the support shaft (10) for retracting or expanding the clamp (11) in a radial direction to switch between a released state and a clamped state, the actuating mechanism comprising: an actuation rod (12), the actuation rod (12) being axially movably disposed within the bore (101), the actuation rod (12) including an inner end (121) located within the bore (101), an outer end (122) extending out of or adjacent the working end face, and a rod body (123) located between the inner end (121) and the outer end (122); and an actuating disc (13), the actuating disc (13) comprising a disc portion (131) arranged adjacent to the working end face and fixedly connected to the outer end (122) of the actuating lever (12), and a ring portion (132) extending in a first axial direction (D1) at a circumferential edge of the disc portion (131) and serving for engagement by the clamping member (11);
wherein, in the release state, the radial dimension of the clamping piece (11) is not larger than the inner diameter of the bushing, and in the clamping state, the radial dimension of the clamping piece (11) is larger than the inner diameter of the bushing.
2. The bushing grip detector of claim 1, wherein said actuator mechanism further includes a biasing member (14), said biasing member (14) being disposed between said inner end (121) of said actuator lever (12) and said working end face for applying a biasing force to said actuator lever (12) in a first axial direction (D1).
3. A clamping detection device of a bushing according to claim 2, wherein the inner end (121) of the actuating rod (12) is formed as a piston portion having an outer side slidably cooperating with the inner side of the bore, the piston portion having a radial dimension larger than the radial dimension of the rod (123);
a stopping part (102) protruding inwards in the radial direction is arranged at a port of the hole cavity (101), and the outer side surface of the rod body (123) is matched with the inner side surface of the stopping part (102) in a sliding manner;
the biasing element (14) is a spring element which is sleeved on the rod body (123) and is pressed between the stopping part (102) and the piston part.
4. The clamping detection device of a bushing according to claim 1,
the disc part (131) of the actuating disc (13) is arranged coaxially and detachably fixedly connected with the outer end (122) of the actuating lever (12); or
The tip of the ring portion (132) is formed with a first conical surface (1321) that contacts the holder (11), and the radial dimension of the first conical surface (1321) is gradually reduced in a first axial direction (D1).
5. The clamping detection device of the bush according to claim 1, wherein the outer peripheral surface of the working end of the supporting shaft (10) is provided with a second conical surface (15) with gradually increased radial size along the first axial direction, and the clamping piece (11) is sleeved on the second conical surface (15);
wherein the ring portion (132) moves towards the second conical surface (15) so as to gradually expand the clamping piece (11) into the clamping state under the support of the conical surface; the ring portion (132) moves away from the second conical surface (15), so that the clamping piece (11) is gradually contracted under the support of the conical surface to enter the releasing state.
6. The clamping detection device of a bush according to claim 5, wherein the outer peripheral surface of the working end of the support shaft (10) comprises a first outer peripheral surface (103) and a second outer peripheral surface (104), the first outer peripheral surface (103) is adjacent to the working end face and slidably fitted with the inner peripheral surface of the ring portion (132), the second conical surface (15) is located between the first outer peripheral surface (103) and the second outer peripheral surface (104), and the outer diameter of the second outer peripheral surface (104) is larger than the outer diameter of the first outer peripheral surface (103).
7. The clamping detection device of the bush according to any one of claims 1 to 6, wherein the actuating mechanism comprises a drive ring (16), the drive ring (16) being axially movably sleeved on the outer circumferential surface of the support shaft (10) and fixedly connected with the actuating rod (12).
8. The clamping detection device of a bush according to claim 7, wherein the clamping mechanism comprises a base (20), the support shaft (10) being rotatably mounted to the base (20);
the base (20) is provided with a positioning device for determining the rotational position of the support shaft (10) relative to the base (20).
9. The clamping detection device of a bushing according to claim 8,
the positioning device includes:
a mounting base (21) fixedly or movably arranged on the base (20);
a positioning probe (22), the positioning probe (22) extending from the mounting seat (21) along the radial direction and pointing to the outer peripheral surface of the working end of the supporting shaft (10) under the action of elastic force,
or a driving cylinder (30) is arranged on the base, the driving cylinder (30) is sleeved on the supporting shaft (10) at intervals and is mounted on the base (20) in an axially sliding manner, the end part of the driving cylinder (30) is matched with the end part of the driving ring (16) in a face-to-face manner,
alternatively, the base is movable in the axial direction.
CN202010105707.4A 2020-02-21 2020-02-21 Clamping detection device for bushing Active CN110919571B (en)

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DE3603801A1 (en) * 1986-02-07 1987-08-20 Bbc Reaktor Gmbh CLAMPING ELEMENT FOR FASTENING IN A HOLE OF A COMPONENT
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CN204321980U (en) * 2014-11-07 2015-05-13 上海锅炉厂有限公司 A kind of heat exchanger tube pipe drawing device
CN105290439A (en) * 2015-11-24 2016-02-03 新昌县中环磨料有限公司 Clamp
CN105798345A (en) * 2016-06-01 2016-07-27 苏州工业职业技术学院 Automatic fixture for lightly cutting thin-wall ring workpiece
CN205414965U (en) * 2015-12-09 2016-08-03 珠海罗西尼表业有限公司 Round piece anchor clamps
CN207138561U (en) * 2017-08-09 2018-03-27 福建兵工装备有限公司 A kind of cylindrical measurement servicing unit of thin-wall part
CN207695654U (en) * 2017-12-28 2018-08-07 安庆职业技术学院 A kind of ball-type bushing dabber clamp
CN209408289U (en) * 2018-11-29 2019-09-20 苏州玉田精密模具有限公司 A kind of T-type swelling device
CN209542729U (en) * 2018-12-28 2019-10-25 宁波正奇电子有限公司 It is a kind of for detecting the test cabinet of actuator
CN110398190A (en) * 2019-07-29 2019-11-01 河北宣化工程机械股份有限公司 A kind of construction machinery gear box shift fork cubing
CN210081240U (en) * 2019-04-04 2020-02-18 珠海罗西尼表业有限公司 Tool capable of rapidly replacing clamp

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3603801A1 (en) * 1986-02-07 1987-08-20 Bbc Reaktor Gmbh CLAMPING ELEMENT FOR FASTENING IN A HOLE OF A COMPONENT
CN102357863A (en) * 2011-09-30 2012-02-22 西安航空动力控制有限责任公司 Sleeve-pulling tool
CN203031332U (en) * 2012-12-27 2013-07-03 重庆机床(集团)有限责任公司 Tooling with end face clamping-in-place detecting mechanism
CN204321980U (en) * 2014-11-07 2015-05-13 上海锅炉厂有限公司 A kind of heat exchanger tube pipe drawing device
CN105290439A (en) * 2015-11-24 2016-02-03 新昌县中环磨料有限公司 Clamp
CN205414965U (en) * 2015-12-09 2016-08-03 珠海罗西尼表业有限公司 Round piece anchor clamps
CN105798345A (en) * 2016-06-01 2016-07-27 苏州工业职业技术学院 Automatic fixture for lightly cutting thin-wall ring workpiece
CN207138561U (en) * 2017-08-09 2018-03-27 福建兵工装备有限公司 A kind of cylindrical measurement servicing unit of thin-wall part
CN207695654U (en) * 2017-12-28 2018-08-07 安庆职业技术学院 A kind of ball-type bushing dabber clamp
CN209408289U (en) * 2018-11-29 2019-09-20 苏州玉田精密模具有限公司 A kind of T-type swelling device
CN209542729U (en) * 2018-12-28 2019-10-25 宁波正奇电子有限公司 It is a kind of for detecting the test cabinet of actuator
CN210081240U (en) * 2019-04-04 2020-02-18 珠海罗西尼表业有限公司 Tool capable of rapidly replacing clamp
CN110398190A (en) * 2019-07-29 2019-11-01 河北宣化工程机械股份有限公司 A kind of construction machinery gear box shift fork cubing

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