CN111288872A

CN111288872A - Gasket measuring device

Info

Publication number: CN111288872A
Application number: CN202010393447.5A
Authority: CN
Inventors: 刘树林; 蔡明元
Original assignee: Nanjing Tops Automation Equipment Co ltd
Current assignee: Nanjing Tops Automation Equipment Co ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2020-06-16

Abstract

The application relates to the field of measurement and discloses a gasket measuring device, which comprises: the workbench is used for positioning a gasket to be tested and is provided with a vertical through hole; the support is fixedly arranged above the workbench and is provided with a linear driver, the linear driver is connected with a pressurizing mechanism extending vertically downwards, and the pressurizing mechanism is provided with a protruding piece aligned with the through hole; a sensing assembly mounted to the table and having a sensing head disposed within the through-hole, wherein: the gasket measuring device also comprises at least three gasket positioning pieces arranged on the workbench, and the at least three gasket positioning pieces are distributed on a circle concentric with the through hole at intervals along the circumferential direction. According to the technical scheme, the gasket thickness flexibility measurement can be suitable for automatic measurement of gaskets in various shapes and sizes.

Description

Gasket measuring device

Technical Field

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

Background

The shim is a very common part in the field of machinery, and is generally used for compensating assembly errors or assembly gaps between components when a mechanical device is assembled, so that thickness data of the shim is very important.

Traditionally, the measuring devices used to measure the thickness of a shim are only for a single type of shim. If the shape, the size and the like of the gasket are changed, only another measuring device can be used for measuring, so that the flexible measurement of the thickness of the gasket is not realized at present, and the gasket is compatible with various gaskets.

Therefore, how to provide a technical solution for flexible measurement of the thickness of the gasket becomes a technical problem to be solved in the field.

Disclosure of Invention

In view of this, the present application provides a tooling device for assembling a wire harness, so as to provide a technical solution for flexibly measuring the thickness of a gasket, which is suitable for gaskets of various shapes and sizes.

According to the present application, there is provided a gasket measuring device including: the device comprises a workbench, a positioning device and a control device, wherein the workbench is used for positioning a gasket to be tested and is provided with a vertical through hole; the support is fixedly arranged above the workbench, a linear driver is installed on the support, the linear driver is connected with a pressurizing mechanism extending vertically downwards, and the pressurizing mechanism is provided with a protruding piece aligned with the through hole; and a sensing assembly mounted to the table and having a sensing head disposed within the through-hole, wherein: the gasket measuring device further comprises at least three gasket positioning pieces arranged on the workbench, and the at least three gasket positioning pieces are distributed on a circle concentric with the through hole at intervals along the circumferential direction.

Preferably, the gasket positioning part is a protruding part arranged on the workbench; or the gasket positioning piece is a cylindrical piece which is arranged between the workbench and the bracket and vertically extends.

Preferably, a pair of side walls is provided at an interval between the support and the table, the pressurizing mechanism is located between the pair of side walls, and the support, the table and the pair of side walls are integrally formed into a rectangular frame structure.

Preferably, the linear actuator has a drive shaft axially mounting the pressing mechanism with a relative displacement margin therebetween that is elastically buffered in the vertical direction.

Preferably, the pressurizing mechanism includes: a support shaft connected to the drive shaft; a plurality of pressing claws detachably mounted to the support shaft and each extending in a radial direction around the support shaft; and

the protruding piece extends downward coaxially from the support shaft and a lowest position of the protruding piece is lower than a lowest position of the plurality of pressing claws.

Preferably, the plurality of pressing claws are arranged symmetrically around the center of the support shaft, and each pressing claw is an independent identical component, or the plurality of pressing claws are connected to each other as an integral component.

Preferably, each pressing claw comprises a connecting end connected to the supporting shaft, a pressing claw arm extending obliquely downwards from the connecting end, and a pressing part extending vertically downwards from the tail end of the pressing claw arm, and the lower surface of the pressing part is used for pressing on the pad to be tested.

Preferably, one of the pressing claws and one of the spacer positioning pieces are slidably fitted to each other in a vertical direction.

Preferably, the pressing mechanism has a retracted position and a pressed-down position in the vertical direction, wherein: in the retracted position, the pressing mechanism is disengaged from the table; in the pressing position, the gasket to be tested is pressed on the workbench by the pressurizing mechanism, and the protruding piece approaches or enters the through hole, so that the protruding piece is sensed by the sensing head in the through hole.

Preferably, the shim measuring device further comprises a standard shim member for providing a standard thickness value for the sensing assembly; the standard gasket piece comprises at least three standard measuring blocks and a mounting block, and the standard measuring blocks and the mounting block have a vertically floatable margin in a working state.

According to the technical scheme of this application, fix a position the gasket that awaits measuring through workstation and gasket setting element, the sense head through sensing assembly is measured the protruding piece of pressure components, and the numerical value of acquireing contrasts with the measurement numerical value of standard gasket spare, indirectly obtains the thickness parameter of gasket. The gasket measuring device can accurately measure gaskets in various shapes and sizes, and improves the detection precision and the flexible applicability of the gasket measuring device.

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 front perspective view of a shim measuring device according to a preferred embodiment of the present application;

FIG. 2 is a rear perspective view of the shim measuring device shown in FIG. 1;

FIG. 3 is a cross-sectional view from the front perspective of the shim measuring device shown in FIG. 1;

FIG. 4 is a diagram of a shim measuring device according to a preferred embodiment of the present application in use with a standard shim stock;

fig. 5 is a perspective view of the standard shim member shown in fig. 4.

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 present application provides a shim measuring device including: the device comprises a workbench 10, a positioning device and a positioning device, wherein the workbench 10 is used for positioning a gasket T to be tested, and the workbench 10 is provided with a vertical through hole 11; a bracket 12, the bracket 12 being fixedly disposed above the table 10, the bracket 12 being mounted with a linear actuator 13, the linear actuator 13 being connected with a pressing mechanism 14 extending vertically downward, the pressing mechanism 14 being provided with a projection 15 aligned with the through-hole 11; and a sensing assembly 16 mounted to the table 10 and having a sensing head 17 disposed within the through hole 11, wherein: the shim measuring device further comprises at least three shim locators 18 arranged on the table 10, the at least three shim locators 18 being distributed at intervals from one another in the circumferential direction on a circle concentric with the through hole 11.

Traditionally, the measuring devices used to measure the thickness of a shim are only for a single type of shim. To the gasket of different size models, need measure with different measuring device, consequently the automatic measurement scheme of the flexibility that can compatible multiple gasket is carried out to gasket thickness has not been realized yet at present.

According to the technical scheme of this application, gasket measuring device fixes a position the gasket T that awaits measuring through workstation 10 and gasket setting element 18, and gasket setting element 18 distributes on the concentric circular with through-hole 11 along the circumferencial direction at interval each other to can fix a position the gasket of multiple size. After positioning, the linear actuator 13 drives the pressing mechanism 14 to press the gasket so that a gap equivalent to the thickness of the gasket is formed between the pressing mechanism 14 and the table 10. The displacement of the protruding part 15 aligned with the through hole 11 is measured by the sensing head 17 of the sensing assembly 16 disposed in the through hole 11, and the thickness parameter of the gasket T to be measured is determined by comparing the displacement difference of the protruding part 15 between the standard part and the gasket T to be measured. Compare in traditional measuring device who measures gasket thickness, the gasket measuring device of this application realizes automatic measure, and measurement of efficiency is higher, fixes a position accurate and convenient operation moreover, can compatible multiple shape, the gasket of size.

As shown in fig. 1, the worktable 10 is used for positioning and placing the gasket T to be measured, and the worktable 10 is preferably horizontally arranged in a working state, and the gravity direction is perpendicular to the upper surface of the worktable 10, so that the gasket T to be measured can be rested on the worktable 10 under the action of gravity, and the position of the gasket T to be measured is calibrated through at least three gasket positioning members 18. The upper surface of the table 10 may be a smooth surface or a rough surface, so as to further position the position of the pad T to be measured.

The support 12 is fixedly disposed above the table 10 and is mounted with a linear actuator 13, and the linear actuator 13 may be an air cylinder, an electric cylinder, or a hydraulic cylinder. As shown in fig. 2, a pair of sidewalls 19 is preferably provided between the support 12 and the table 10 at an interval, the pair of sidewalls 19 support the support 12 and the table 10, the support 12, the table 10 and the pair of sidewalls 19 are integrally formed into a rectangular frame structure, and the pressing mechanism 14 is located between the pair of sidewalls 19, and the pressing mechanism 14 is controlled to press toward or move away from the table 10 by the linear actuator 13. Wherein the linear actuator 13 can provide a driving force for pressing the pressurizing mechanism 14 to or away from the worktable 10, or can only provide a force for making the pressurizing mechanism 14 away from the worktable 10, when the gasket T to be measured needs to be pressed, the linear actuator 13 releases the pressurizing mechanism 14 to press the gasket T to be measured under the action of gravity.

The sensing assembly 16 is mounted to the table 10, and as shown in fig. 1 and 3, the sensing assembly 16 includes a sensing head 17 disposed in the through hole 11. The sensing assembly 16 may comprise a light or magnetic distance sensor, by means of which sensing head 17 the distance of the boss 15 aligned with the through hole 11 is measured with respect to the sensing head 17; or the sensing assembly 16 comprises a displacement sensor, the pressurizing mechanism 14 presses the workbench 10, and the displacement sensor acquires the displacement value of the sensing head during the process that the convex piece 15 presses the sensing head 17 to move downwards, so that the thickness of the gasket T to be measured is measured.

At least three gasket positioning pieces 18 are arranged on the workbench 10, and the at least three gasket positioning pieces 18 are distributed on a circle concentric with the through hole 11 at intervals along the circumferential direction, so as to perform stop positioning on the gasket T to be measured in the horizontal direction. Preferably, as shown in fig. 1 and 2, the spacer locator 18 is a raised member provided on the table 10; or the spacer locator 18 is a vertically extending cylindrical member disposed between the table 10 and the support 12. The peripheral edge of the gasket T to be measured contacts at least two gasket locating pieces 18, thereby achieving the purpose of location.

According to the shim measuring device as described above, preferably, as shown in fig. 3, the linear actuator 13 has a driving shaft 131 for axially mounting the pressing mechanism 14, and the driving shaft 131 and the pressing mechanism 14 may be fixedly mounted and connected, or may have a relative displacement margin elastically buffered in a vertical direction, so as to reduce a load on the driving shaft 131 when the pressing mechanism 14 is driven by the linear actuator 13. The pressing mechanism 14 mounted to the driving shaft 131 may be a single piece, and preferably, as shown in fig. 3, may further include: a support shaft 141, the support shaft 141 being connected to the drive shaft 131; a plurality of pressing claws 142 fixedly or detachably mounted to the support shaft 141 and extending in a radial direction around the support shaft 141, so that the plurality of pressing claws 142 can simultaneously press-contact different positions of the to-be-tested pad T; and the protruding part 15, the protruding part 15 extends downward from the supporting shaft 141 coaxially and the lowest position of the protruding part 15 is lower than the lowest position of the plurality of pressing claws 142, and the difference between the displacement of the protruding part 15 pressing the sensing head 17 when the gasket T to be measured is not placed in the gasket measuring device and the displacement of the protruding part 15 pressing the sensing head 17 when the gasket T to be measured is placed in the gasket measuring device is the thickness value of the gasket T to be measured.

In order to improve the measurement accuracy, the pressing mechanisms 14 are required to press the pads T to be measured as uniformly as possible during the measurement, and as shown in fig. 3 and 4, a plurality of pressing claws 142 are preferably arranged concentrically around the support shaft 141. Each pressing claw 142 may be an independent identical component, or a plurality of pressing claws 142 may be connected to each other as an integral component. Each pressing claw 142 includes a connecting end 1421 connected to the supporting shaft 141, a pressing claw arm 1422 extending obliquely downward from the connecting end 1421, and a pressing part 1423 extending vertically downward from the end of the pressing claw arm 1422, and the lower surface of the pressing part 1423 is used for pressing on the pad T to be tested. In the operating state, the height of the lower surface of the nip portion 1423 of each pressing claw 142 in the axial direction of the pressing mechanism 14 is the same.

In the above-described gasket measuring device, it is necessary to limit the degree of freedom of rotation of the plurality of pressing claws 142 about the support shaft 141 to prevent abrasion of the gasket due to rotation of the plurality of pressing claws 142 during the press-fitting. Preferably, as shown in fig. 2, one of the gasket positioning members 18 is a vertically extending cylindrical member, and one of the pressing claws 142 and one of the gasket positioning members 18 are slidably fitted to each other in the vertical direction. The sliding fit may be provided by the clamping fingers 142 having guide holes or grooves for guiding one of the spacer locations 18.

According to a preferred embodiment of the present application, the pressurizing mechanism of the gasket measuring device has a contracted position and a depressed position in the vertical direction, wherein: in the contraction position, the linear driver 13 drives the pressurizing mechanism 14 to be separated from the workbench 10, and the gasket T to be tested can be put in or taken out; in the pressing position, the linear actuator 13 drives the pressing mechanism 14 to press the pad T to be tested on the worktable 10 and the protruding member 15 approaches or enters the through hole 11, so that the protruding member 15 is sensed by the sensing head 17 in the through hole 11, and the displacement value of the protruding member 15 when the pad T to be tested is placed is obtained.

To further improve the measurement accuracy and efficiency of the shim measuring device of the present application, as shown in fig. 4, the shim measuring device preferably includes a standard shim piece 20 for providing a standard thickness value for the sensing assembly 16. Through comparing the displacement value of the bulge parts 15 corresponding to the standard gasket part 20 and the gasket T to be tested respectively, the gasket with corresponding thickness can be rapidly screened. Considering that the integral standard gasket member may have a gap with the worktable 10 due to the integral standard gasket member not being flat enough when pressed by the pressing mechanism 14, which may adversely affect the calibration result, it is preferable that the standard gasket member 20 includes at least three standard gauge blocks 21 and one mounting block 22, as shown in fig. 4 and 5, and there is a vertically floatable margin between the standard gauge blocks 21 and the mounting block 22 in the working state. Each floatable standard gauge block 21 can be attached to the workbench 10 without gaps under the pressing contact of the pressurizing mechanism 14, so that the calibration error is avoided, and the measurement precision is improved. The standard gauge block 21 and the mounting block 22 can be floated by an elastic connecting member (e.g., a gasket or a spring member made of an elastic material). Preferably, the standard shim piece 20 includes a screw passing through the mounting block 22 with a clearance, the screw vertically slidably engaging the mounting block 22 and fixedly mounted to the standard gauge block 21.

Compare in traditional gasket measuring device, this application provides a high accuracy and can be compatible the technical scheme of the measurement thickness of the gasket of multiple size, and this gasket measuring device can realize carrying out automated measurement to the gasket of multiple shape, size, possesses better compatibility to detection efficiency and measurement accuracy have been 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 is also possible, and the same should be considered as disclosed in the present application as long as it does not depart from the idea of the present application.

Claims

1. Gasket measuring device, characterized in that, this gasket measuring device includes:

the device comprises a workbench (10), wherein the workbench (10) is used for positioning a gasket (T) to be tested, and the workbench (10) is provided with a vertical through hole (11);

the support (12), the support (12) is fixedly arranged above the workbench (10), the support (12) is provided with a linear driver (13), the linear driver (13) is connected with a pressurizing mechanism (14) extending vertically downwards, and the pressurizing mechanism (14) is provided with a protruding piece (15) aligned with the through hole (11); and

a sensing assembly (16) mounted to the table (10) and having a sensing head (17) disposed within the through-hole (11), wherein:

the gasket measuring device further comprises at least three gasket positioning pieces (18) arranged on the workbench (10), wherein the at least three gasket positioning pieces (18) are distributed on a circle concentric with the through hole (11) at intervals along the circumferential direction.

2. The shim measuring device of claim 1,

the gasket positioning piece (18) is a protruding piece arranged on the workbench (10); or

The gasket positioning piece (18) is a cylindrical piece which is arranged between the workbench (10) and the bracket (12) and vertically extends.

3. The shim measuring device according to claim 1, wherein a pair of side walls (19) are provided at a distance between the support (12) and the table (10), the pressurizing mechanism (14) is located between the pair of side walls (19), and the support (12), the table (10) and the pair of side walls (19) are integrally formed into a rectangular frame structure.

4. A shim measuring device according to claim 1, characterised in that the linear drive (13) has a drive shaft (131) axially mounting the pressing mechanism (14), with a relative displacement margin between the drive shaft (131) and the pressing mechanism (14) which is resiliently damped in the vertical direction.

5. The gasket measuring device according to claim 4, wherein the pressurizing mechanism (14) includes:

a support shaft (141), the support shaft (141) being connected to the drive shaft (131);

a plurality of pressing claws (142), the plurality of pressing claws (142) being detachably mounted to the support shaft (141) and extending in a radial direction all around the support shaft (141); and

the protruding piece (15), this protruding piece (15) from the support axle (141) coaxially downwardly extending and the lowest of the protruding piece (15) is lower than the lowest of the plurality of pressure claws (142).

6. The shim measuring device according to claim 5, wherein the plurality of pressing claws (142) are arranged symmetrically around the center of the support shaft (141), each pressing claw (142) is an independent identical component from each other, or the plurality of pressing claws (142) are connected to each other as an integral component.

7. The gasket measuring device according to claim 5 or 6, wherein each pressing claw (142) includes a connecting end (1421) connected to the support shaft (141), a pressing claw arm (1422) extending obliquely downward from the connecting end (1421), and a pressing portion (1423) extending vertically downward from a tip of the pressing claw arm (1422), a lower surface of the pressing portion (1423) being adapted to be pressed onto the gasket (T) to be measured.

8. A shim measuring device as claimed in claim 5, wherein one of the clamping fingers (142) and one of the shim locators (18) are in sliding engagement with each other in a vertical direction.

9. The gasket measuring device of claim 1 wherein said pressurization mechanism has a retracted position and a depressed position in a vertical direction, wherein:

in the retracted position, the pressing mechanism (14) is disengaged from the table (10);

in the pressing position, the pressurizing mechanism (14) presses the gasket (T) to be tested on the workbench (10) and the protruding piece (15) approaches or enters the through hole (11), so that the protruding piece (15) is sensed by a sensing head (17) in the through hole (11).

10. The shim measuring device according to claim 1, further comprising a standard shim member (20) for providing a standard thickness value for the sensing assembly (16);

the standard gasket piece (20) comprises at least three standard measuring blocks (21) and one mounting block (22), and the standard measuring blocks (21) and the mounting block (22) have a vertically floatable margin therebetween in a working state.