CN219142077U

CN219142077U - Exit force detector after heterogeneous material laser welding and servo press fitting

Info

Publication number: CN219142077U
Application number: CN202223536301.5U
Authority: CN
Inventors: 盛操; 丁健陆; 江娟; 盛祥树
Original assignee: Wuxi Yuwo Industrial Technology Co ltd
Current assignee: Wuxi Yuwo Industrial Technology Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-06
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to the technical field of automation, in particular to an exit force detector for heterogeneous material after laser welding and servo press fitting, which comprises a jig, a press-feeding assembly and a position sensor, wherein the jig is fixedly arranged, the top of the jig is used for placing an assembled gear and a shaft, the press-feeding assembly comprises a proportional cylinder provided with a proportional valve, a piston rod of the proportional cylinder stretches out of a cylinder body and then applies an axial force with a certain value to the shaft in the vertical direction, and the position sensor is arranged at the bottom of the jig and is used for measuring and feeding back the end face position of the shaft after being stressed. The technical problem that a gear and shaft withdrawal force detection device is lacked in the prior art is solved.

Description

Exit force detector after heterogeneous material laser welding and servo press fitting

Technical Field

The utility model relates to the technical field of automation, in particular to an exit force detector for heterogeneous material after laser welding and servo press fitting.

Background

During mechanical installation, there are many parts that need to be tightly fitted to prevent the connection from coming off or transmitting large torque, thus creating an interference technique. The interference fit is to enlarge and deform the hole by using the elasticity of the material to sleeve the hole on the shaft, and the hole is restored to generate the tightening force of the shaft so as to connect the two parts. In the interference fit tolerance band diagram, the tolerance band of the bore is below the tolerance band of the shaft.

The gear of gearbox and the cooperation of axle usually need interference fit, heat the gear earlier, assemble the axle after the gear heating is accomplished, just realized interference fit after the gear cooling. The requirements of the gearbox on the stress condition are accurate, and an exit force test is needed for the assembled gear and shaft to ensure that the friction force between the gear and the shaft is within a specified range.

Disclosure of Invention

In order to solve the technical problem that a gear and shaft withdrawal force detection device is lacked in the prior art, the application provides a heterogeneous material laser welding and servo press-fitting withdrawal force detection machine, and the technical problem is solved.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides an exit force detector for heterogeneous material after laser welding and servo press fitting, which comprises: the jig is fixedly arranged, and the top of the jig is used for placing the assembled gear and shaft; the pressure-feed assembly comprises a proportioning cylinder provided with a proportioning valve, wherein a piston rod of the proportioning cylinder extends out of the cylinder body and applies a definite axial force to the shaft in the vertical direction; and the position sensor is arranged at the bottom of the jig and is used for measuring and feeding back the end face position of the stressed shaft.

When the exit force detector for the heterogeneous material after laser welding and servo press mounting detects, the assembled gear and shaft are placed on the jig, a fixed small-value force starting proportional cylinder is firstly arranged, the proportional cylinder pushes the shaft to an initial position, a position sensor records the position D1 of the end face of the shaft at the moment, a standard-value force starting proportional cylinder is further arranged for testing, the shaft slightly breaks away from the gear, the position sensor records the position D2 of the end face of the shaft at the moment, delta= D2-D1 is the same, whether the value of delta exceeds a preset value (the preset value precision unit of an actual product is 0.001 millimeter) is judged, and accordingly whether the assembly of the gear and the shaft is qualified or not is judged, namely whether the exit force is within a preset range or not is judged through the exit distance of the shaft, so that the technical problem that the gear and shaft exit force detection device is lacked in the prior art is solved.

Further, the jig is processed from a piece of material.

Further, the pressure feeding assembly further comprises a guide rail and a guide block arranged on the guide rail, the guide block is fixedly connected with a piston rod of the proportional cylinder, and the guide block directly acts on the shaft in the detection process.

Further, the guide block is also provided with a pressure sensor to measure and feed back the magnitude of the force of the guide block on the shaft.

Further, a connecting plate is formed on the jig and used for installing the position sensor.

Further, a flitch is formed on the jig for placing the assembled gear and shaft.

Based on the technical scheme, the utility model has the following technical effects:

Drawings

Fig. 1 is a schematic diagram of the overall structure of the exit force detector after laser welding and servo press-fitting of heterogeneous materials.

Wherein: a-gear, b-shaft; 1-jig, 11-material plate and 12-connecting plate; 2-pressure-feed assembly, 21-proportional cylinder, 22-guide rail, 23-guide block, 24-pressure sensor; 3-position sensor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

As shown in fig. 1, the exit force detector after heterogeneous material laser welding and servo press fitting provided by the application comprises a jig 1, a press-feeding assembly 2 and a position sensor 3, wherein the jig 1 is fixedly arranged, the top of the jig 1 is used for placing an assembled gear a and a shaft b, the press-feeding assembly 2 comprises a proportional cylinder 21 provided with a proportional valve, a piston rod of the proportional cylinder 21 stretches out of a cylinder body and then applies a shaft b axial force with a certain value on the shaft b in the vertical direction, and the position sensor 3 is arranged at the bottom of the jig 1 and is used for measuring and feeding back the end face position of the shaft b after being stressed.

When the exit force detector for heterogeneous material laser welding and servo press mounting detects, an assembled gear a and a shaft b are placed on the jig 1, a fixed small-value force starting proportional cylinder 21 is firstly arranged, the proportional cylinder 21 pushes the shaft b to an initial position, a position sensor 3 records the position D1 of the end face of the shaft b at the moment, a standard-value force starting proportional cylinder 21 is further arranged, the shaft b slightly breaks away from the gear a, a position sensor 3 records the position D2, delta= D2-D1 at the moment, whether the value of delta exceeds a preset value (the preset value precision unit of an actual product is 0.001 mm) is judged, and accordingly whether the assembly of the gear a and the shaft b is qualified or not is judged, namely whether the exit force is within a preset range or not is judged through the exit distance of the shaft b, and the technical problem that a device for detecting the exit force of the gear a and the shaft b is lacked in the prior art is solved.

In one embodiment of the present application, the jig 1 is machined from a single piece of material. If the jig 1 is formed by splicing a plurality of materials, when the piston rod of the proportional cylinder 21 is pressed down, the jig 1 splicing block is firstly displaced instead of the shaft b, so that the integrated jig 1 has great significance in practical test.

Further, a material plate 11 is formed at the upper portion of the jig 1 for placing the assembled gear a and shaft b. The middle position of the jig 1 is provided with a connecting plate 12, the connecting plate 12 is used for installing a position sensor 3, and the position sensor 3 is specifically installed below the connecting plate 12.

In a specific embodiment of the present application, the pressure-feed assembly 2 further comprises a guide rail 22 and a guide block 23 arranged on the guide rail 22, the guide block 23 being fixedly connected with the piston rod of the proportioning cylinder 21, and the guide block 23 acting directly on the shaft b during the detection. This allows the force of the piston rod of the proportioning cylinder 21 to be directed vertically downwards along the axis b of the axis b, ensuring the accuracy of the test.

In one embodiment of the present application, the guide block 23 is further provided with a pressure sensor 24 to measure and feed back the magnitude of the force of the guide block 23 acting on the shaft b to facilitate detection by the pressure sensor 24.

It should be understood that the above-described specific embodiments are only for explaining the present utility model and are not intended to limit the present utility model. Obvious variations or modifications which extend from the spirit of the present utility model are within the scope of the present utility model.

Claims

1. An exit force detector after heterogeneous material laser welding and servo press fitting, which is characterized by comprising:

the jig (1) is fixedly arranged, and the top of the jig (1) is used for placing the assembled gear (a) and shaft (b);

a pressure-feed assembly (2), wherein the pressure-feed assembly (2) comprises a proportional cylinder (21) provided with a proportional valve, and a piston rod of the proportional cylinder (21) extends out of the cylinder body and then applies a shaft (b) directional force with a definite value to a shaft (b) in the vertical direction;

the position sensor (3) is arranged at the bottom of the jig (1) and used for measuring and feeding back the end face position of the stressed shaft (b).

2. The machine for detecting the withdrawal force after laser welding and servo press fitting of heterogeneous materials according to claim 1, wherein the jig (1) is processed from one piece of material.

3. The machine for detecting the withdrawal force after laser welding and servo press fitting of heterogeneous materials according to claim 1, characterized in that the pressure-feed assembly (2) further comprises a guide rail (22) and a guide block (23) arranged on the guide rail (22), the guide block (23) being fixedly connected with the piston rod of the proportioning cylinder (21), and the guide block (23) directly acting on the shaft (b) during the detection.

4. A machine for detecting the withdrawal force after laser welding, servo-press fitting of heterogeneous materials according to claim 3, characterized in that said guide block (23) is further provided with a pressure sensor (24) for measuring and feeding back the value of the force of said guide block (23) acting on the shaft (b).

5. The machine for detecting the withdrawal force after laser welding and servo press fitting of heterogeneous materials according to claim 1, wherein a connecting plate (12) is formed on the jig (1), and the connecting plate (12) is used for installing the position sensor (3).

6. The machine for detecting the withdrawal force after laser welding and servo press fitting of heterogeneous materials according to claim 1, wherein a material plate (11) is formed on the jig (1) for placing the assembled gear (a) and shaft (b).