Engine crankshaft core shaft contact detection tooling

Abstract

The present invention discloses a contact detection tool for an engine crankshaft mandrel, comprising a fixed plate base, a contact detection mechanism, an X-direction digital quantity position sensor, a Y-direction digital quantity position sensor, a Z-direction digital quantity position sensor and a three-way contact plate, wherein the contact detection mechanism is mounted on the fixed plate base, the contact detection mechanism can move in the X direction or the Y direction relative to the fixed plate base, the three-way contact plate is mounted on the bottom of the contact detection mechanism, and can move up and down relative to the contact detection mechanism, the X-direction digital quantity position sensor is arranged on the top of the fixed plate base and is located above the contact detection mechanism, the Y-direction digital quantity position sensor is mounted on one side of the fixed plate base and is located on the side of the contact detection mechanism, and the X-direction digital quantity position sensor is used to detect the X-direction position of the engine crankshaft mandrel. Compared with the prior art, the present invention improves the accuracy and efficiency of the engine crankshaft mandrel position detection and saves the detection cost.

Description

Technical Field

[0001] The invention relates to the technical field of engine crankshaft mandrel position detection, and in particular to an engine crankshaft mandrel contact type detection tool. Background Art

[0002] At present, there are mainly two ways to detect the position of the engine crankshaft core shaft:

[0003] 1. Install Italian Marposs probe on the robot (such as Figure 1 As shown), use the probe to measure the position of the crankshaft mandrel in the XYZ direction;

[0004] Imported Marposs probes are used as a position detection method, which is expensive, highly accurate, and easily damaged after collision. The edge position of the crankshaft core axis in the XY direction is measured by line-by-line scanning, which takes a long time to measure. In addition, the XYZ position error of the finished crankshaft placed on the material cart is large, and the error can reach 50MM. Therefore, the use of Marposs probes as a position detection method is not suitable for measuring the loading and unloading position of robot crankshafts.

[0005] 2. Use visual recognition (such as Figure 2 As shown), by taking a picture of the crankshaft, the position of the crankshaft core axis in the XYZ direction is calculated in the software;

[0006] When measuring by visual recognition, the camera used for measurement is easily disturbed by surrounding light sources, has poor stability, and has errors in taking pictures, which can easily affect the software's calculation of the position of the robot grabbing the crankshaft, causing the gripper to hit the workpiece. Summary of the invention

[0007] The main purpose of the present invention is to provide an engine crankshaft core shaft contact detection tooling, aiming to improve the accuracy and efficiency of engine crankshaft core shaft position detection and save detection costs.

[0008] To achieve the above-mentioned purpose, the present invention provides a contact detection tool for an engine crankshaft spindle, comprising a fixed plate base, a contact detection mechanism, an X-direction digital position sensor, a Y-direction digital position sensor, a Z-direction digital position sensor and a three-way contact plate, wherein the contact detection mechanism is installed on the fixed plate base, and the contact detection mechanism can move in the X-direction or Y-direction relative to the fixed plate base, the three-way contact plate is installed at the bottom of the contact detection mechanism, and can move up and down relative to the contact detection mechanism, the X-direction digital position sensor is arranged on the top of the fixed plate base and is located above the contact detection mechanism, the Y-direction digital position sensor is installed on one side of the fixed plate base and is located on the side of the contact detection mechanism, the X-direction digital position sensor is used to detect the X-direction position of the engine crankshaft spindle, the Y-direction digital position sensor is used to detect the Y-direction position of the engine crankshaft spindle, and the Z-direction digital position sensor is used to detect the Z-direction position of the engine crankshaft spindle.

[0009] A further technical solution of the present invention is that the three-way contact plate comprises an X-way contact plate, a Y-way contact plate and a Z-way contact plate which are vertically arranged to each other, and the top of the Z-way contact plate is connected to the contact detection mechanism.

[0010] A further technical solution of the present invention is that the contact detection mechanism includes a guide sleeve, a guide rail slider is installed on the front side of the fixed plate base, and the guide sleeve is slidably connected to the front side of the fixed plate base through the guide rail slider.

[0011] A further technical solution of the present invention is that a first Z guide rod is installed on the top of the guide sleeve, and a second Z guide rod is installed on the bottom. A Z-direction return spring is installed on the first Z guide rod, and a Z-direction compression spring is installed on the second Z guide rod. One end of the second Z guide rod is installed in the guide sleeve, and the other end is in contact with the Z-direction contact plate.

[0012] A further technical solution of the present invention is that a first X-guide rod is installed on one side of the guide sleeve, and a second X-guide rod is installed on the other side, an X-direction return spring is installed on the first X-guide rod, and an X-direction compression spring is installed on the second X-guide rod, one end of the first X-guide rod and one end of the second X-guide rod are respectively installed in the sleeve, the other end of the first X-guide rod is connected to one side of the fixed plate base, and the other end of the second X-guide rod is connected to the other side of the fixed plate base.

[0013] A further technical solution of the present invention is that a first Y guide rod is installed on the front side of the guide sleeve, and a second Y guide rod is installed on the back side, the first Y guide rod is sleeved with a Y-direction return spring, the second Y guide rod is sleeved with a Y-direction compression spring, one end of the second Y guide rod is installed in the guide sleeve, and the other end is connected to the guide rail slider.

[0014] A further technical solution of the present invention is that a rectangular induction plate is installed on the back side of the guide sleeve.

[0015] The beneficial effects of the engine crankshaft spindle contact detection tooling of the present invention are as follows: the present invention, through the above technical scheme, includes a fixed plate base, a contact detection mechanism, an X-direction digital position sensor, a Y-direction digital position sensor, a Z-direction digital position sensor and a three-way contact plate, the contact detection mechanism is installed on the fixed plate base, the contact detection mechanism can move along the X-direction or the Y-direction relative to the fixed plate base, the three-way contact plate is installed at the bottom of the contact detection mechanism, and can move up and down relative to the contact detection mechanism, the X-direction digital position sensor is arranged on the top of the fixed plate base and is located above the contact detection mechanism, the Y-direction digital position sensor is installed on one side of the fixed plate base and is located on the side of the contact detection mechanism, the X-direction digital position sensor is used to detect the X-direction position of the engine crankshaft spindle, the Y-direction digital position sensor is used to detect the Y-direction position of the engine crankshaft spindle, and the Z-direction digital position sensor is used to detect the Z-direction position of the engine crankshaft spindle, thereby improving the accuracy and efficiency of the engine crankshaft spindle position detection and saving the detection cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of measuring the position of the engine crankshaft spindle by a Marposs probe in the prior art;

[0018] Figure 2 It is a schematic diagram of measuring the position of the engine crankshaft core shaft by visual recognition in the prior art;

[0019] Figure 3 It is a schematic diagram of the overall structure of a first angle of a preferred embodiment of the engine crankshaft core contact detection tooling of the present invention;

[0020] Figure 4 It is a schematic diagram of the overall structure of a first angle of a preferred embodiment of the engine crankshaft core contact detection tooling of the present invention;

[0021] Figure 5 It is a working schematic diagram of a preferred embodiment of the engine crankshaft core shaft contact detection tooling of the present invention.

[0022] Description of Figure Numbers:

[0023] Fixed plate base 10;

[0024] Contact detection mechanism 20:

[0025] Guide sleeve 201, guide rail slider 202, first Z guide rod 203, second Z guide rod 204, Z direction return spring 205, Z direction compression spring 206, first X guide rod 207, second X guide rod 208, X direction return spring 209, X direction compression spring 210, first Y guide rod 211, second Y guide rod 212, Y direction return spring 213, Y direction compression spring 214;

[0026] X-axis digital position sensor 30;

[0027] Y-axis digital position sensor 40;

[0028] Z-direction digital position sensor 50;

[0029] Three-way contact plate 60: X-way contact plate 601, Y-way contact plate 602, Z-way contact plate 603;

[0030] The induction plate 70 .

[0031] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] Please refer to Figures 3 to 5 The present invention proposes an engine crankshaft core shaft contact detection tooling, the present invention adopts mechanical contact detection, uses a digital quantity sensor to sense in place, the detection position data is stable, is not affected by the surrounding environment, has a simple structure, low cost, and is easy to maintain in the later stage.

[0036] Specifically, Figures 3 to 5 As shown, a preferred embodiment of the engine crankshaft core shaft contact detection tooling of the present invention includes a fixed plate base 10, a contact detection mechanism 20, an X-axis digital position sensor 30, a Y-axis digital position sensor 40, a Z-axis digital position sensor 50 and a three-way contact plate 60, wherein the contact detection mechanism 20 is installed on the fixed plate base 10, and the contact detection mechanism 20 can move relative to the fixed plate base 10 in the X direction or the Y direction, and the three-way contact plate 60 is installed at the bottom of the contact detection mechanism 20 and can move relative to the contact detection mechanism 20 moves up and down, the X-axis digital position sensor 30 is arranged on the top of the fixed plate base 10 and is located above the contact detection mechanism 20, the Y-axis digital position sensor 40 is installed on one side of the fixed plate base 10 and is located on the side of the contact detection mechanism 20, the X-axis digital position sensor 30 is used to detect the X-axis position of the engine crankshaft core shaft, the Y-axis digital position sensor 40 is used to detect the Y-axis position of the engine crankshaft core shaft, and the Z-axis digital position sensor 50 is used to detect the Z-axis position of the engine crankshaft core shaft.

[0037] When detecting the position of the engine crankshaft core shaft, the fixed plate base 10 is installed on the robot arm, and the three-way contact plate 60 touches the core shaft end of the engine crankshaft. When the three-way contact plate 60 touches the engine crankshaft core shaft, the contact detection mechanism 20 is prompted to face the X-axis digital position sensor 30, the Y-axis digital position sensor 40 or the Z-axis digital position sensor 50. When the X-axis digital position sensor 30, the Y-axis digital position sensor 40, and the Z-axis digital position sensor 50 sense the contact detection mechanism 20, a signal is sent to the PLC, and the robot stops moving and records the current X-axis, Y-axis or Z-axis position of the engine crankshaft core shaft. In this measurement method, the engine crankshaft core shaft only needs to move toward the three-way contact plate 60 once, which is shorter than the scanning method in the prior art and has higher detection efficiency. In addition, compared with the prior art, the detection method of the X-axis digital position sensor 30, the Y-axis digital position sensor 40 and the Z-axis digital position sensor 50 is simpler and not affected by the surrounding environment. The detection data is more stable and can be applied in any environment.

[0038] Furthermore, in this embodiment, the three-direction contact plate 60 includes an X-direction contact plate 601 , a Y-direction contact plate 602 , and a Z-direction contact plate 603 that are vertically arranged to each other, and the top of the Z-direction contact plate 603 is connected to the contact detection mechanism 20 .

[0039] The contact detection mechanism 20 includes a guide sleeve 201 . A guide rail slider 202 is installed on the front side of the fixed plate base 10 . The guide sleeve 201 is slidably connected to the front side of the fixed plate base 10 via the guide rail slider 202 .

[0040] A first Z guide rod 203 is installed on the top of the guide sleeve 201, and a second Z guide rod 204 is installed on the bottom. A Z-direction return spring 205 is installed on the first Z guide rod 203, and a Z-direction compression spring 206 is installed on the second Z guide rod 204. One end of the second Z guide rod 204 is installed in the guide sleeve 201, and the other end is in contact with the Z-direction contact plate 603.

[0041] A first X-guide rod 207 is installed on one side of the guide sleeve 201, and a second X-guide rod 208 is installed on the other side. An X-direction return spring 209 is installed on the first X-guide rod 207, and an X-direction compression spring 210 is installed on the second X-guide rod 208. One end of the first X-guide rod 207 and one end of the second X-guide rod 208 are respectively installed in the sleeve, and the other end of the first X-guide rod 207 is connected to one side of the fixed plate base 10, and the other end of the second X-guide rod 208 is connected to the other side of the fixed plate base 10.

[0042] A first Y-guide rod 211 is installed on the front side of the guide sleeve 201, and a second Y-guide rod 212 is installed on the back side. The first Y-guide rod 211 is sleeved with a Y-direction return spring 213, and the second Y-guide rod 212 is sleeved with a Y-direction compression spring 214. One end of the second Y-guide rod 212 is installed in the guide sleeve 201, and the other end is connected to the guide rail slider 202.

[0043] In this embodiment, the three-way contact plate 60 moves in the three directions of X / Y / Z, and two springs are arranged in the positive and negative directions of X / Y / Z, one for compression and feeding during measurement, and the other for returning to the original state after measurement. Since the spring stroke used is relatively long, even if a collision occurs, the compression stroke of the spring will prevent the tooling from being hit. At the same time, the alarm detection stroke set on the robot used is smaller than the compression stroke of the spring, that is, if the detection stroke exceeds the compression stroke of the spring, the robot will issue an alarm message, such as "detection position overtravel or collision occurs", so the tooling can be prevented from being damaged by impact.

[0044] Taking into account that the position of the engine crankshaft placed on the on-site material cart in the prior art is greatly affected by the manufacturing error and height of the partition, the XYZ spacing distances of the crankshafts on the same plane are different. Therefore, the elastic structure of the engine crankshaft core shaft contact detection tooling can avoid the influence of the crankshaft position tolerance when detecting the position, accurately measure the XYZ direction position of the engine crankshaft core shaft, and enable the loading and unloading robots to accurately grasp the crankshaft.

[0045] In addition, in order to enable the Y-axis digital position sensor 40 and the Z-axis digital position sensor 50 to accurately detect the position of the engine crankshaft core shaft, this embodiment has a sensing plate 70 installed on the back side of the guide sleeve 201, wherein the specific shape of the sensing plate 70 can be set according to actual needs, for example, set to a rectangular shape.

[0046] The beneficial effects of the engine crankshaft spindle contact detection tooling of the present invention are as follows: the present invention, through the above technical scheme, includes a fixed plate base, a contact detection mechanism, an X-direction digital position sensor, a Y-direction digital position sensor, a Z-direction digital position sensor and a three-way contact plate, the contact detection mechanism is installed on the fixed plate base, the contact detection mechanism can move along the X-direction or the Y-direction relative to the fixed plate base, the three-way contact plate is installed at the bottom of the contact detection mechanism, and can move up and down relative to the contact detection mechanism, the X-direction digital position sensor is arranged on the top of the fixed plate base and is located above the contact detection mechanism, the Y-direction digital position sensor is installed on one side of the fixed plate base and is located on the side of the contact detection mechanism, the X-direction digital position sensor is used to detect the X-direction position of the engine crankshaft spindle, the Y-direction digital position sensor is used to detect the Y-direction position of the engine crankshaft spindle, and the Z-direction digital position sensor is used to detect the Z-direction position of the engine crankshaft spindle, thereby improving the accuracy and efficiency of the engine crankshaft spindle position detection and saving the detection cost.

[0047] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A contact detection tool for an engine crankshaft spindle, characterized in that: It includes a fixed plate base, a contact detection mechanism, an X-direction digital position sensor, a Y-direction digital position sensor, a Z-direction digital position sensor and a three-way contact plate, wherein the contact detection mechanism is installed on the fixed plate base, and the contact detection mechanism can move in the X direction or the Y direction relative to the fixed plate base, and the three-way contact plate is installed at the bottom of the contact detection mechanism and can move up and down relative to the contact detection mechanism, the X-direction digital position sensor is arranged on the top of the fixed plate base and is located above the contact detection mechanism, the Y-direction digital position sensor is installed on one side of the fixed plate base and is located on the side of the contact detection mechanism, the X-direction digital position sensor is used to detect the X-direction position of the engine crankshaft spindle, the Y-direction digital position sensor is used to detect the Y-direction position of the engine crankshaft spindle, and the Z-direction digital position sensor is used to detect the Z-direction position of the engine crankshaft spindle; The three-way contact plate comprises an X-way contact plate, a Y-way contact plate and a Z-way contact plate which are arranged perpendicular to each other, and the top of the Z-way contact plate is connected to the contact detection mechanism; The contact detection mechanism comprises a guide sleeve, a guide rail slider is installed on the front of the fixed plate base, and the guide sleeve is slidably connected to the front of the fixed plate base through the guide rail slider; A first Z guide rod is installed on the top of the guide sleeve, and a second Z guide rod is installed on the bottom. A Z-direction return spring is installed on the first Z guide rod, and a Z-direction compression spring is installed on the second Z guide rod. One end of the second Z guide rod is installed in the guide sleeve, and the other end is in contact with the Z-direction contact plate.

2. The engine crankshaft core shaft contact detection tooling according to claim 1, characterized in that: A first X-guide rod is installed on one side of the guide sleeve, and a second X-guide rod is installed on the other side. An X-direction return spring is installed on the first X-guide rod, and an X-direction compression spring is installed on the second X-guide rod. One end of the first X-guide rod and one end of the second X-guide rod are respectively installed in the sleeve, and the other end of the first X-guide rod is connected to one side of the fixed plate base, and the other end of the second X-guide rod is connected to the other side of the fixed plate base.

3. The engine crankshaft core shaft contact detection tooling according to claim 2, characterized in that: A first Y-guide rod is installed on the front side of the guide sleeve, and a second Y-guide rod is installed on the back side. The first Y-guide rod is sleeved with a Y-direction return spring, and the second Y-guide rod is sleeved with a Y-direction compression spring. One end of the second Y-guide rod is installed in the guide sleeve, and the other end is connected to the guide rail slider.

4. The engine crankshaft core shaft contact detection tool according to any one of claims 1 to 3, characterized in that: A rectangular induction plate is installed on the back side of the guide shaft sleeve.

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