Gear shaft tooth mark marking machine and marking method

Abstract

The application discloses a gear shaft tooth marking machine and a marking method, which comprises a base assembly, a marking machine driving assembly is arranged on the base assembly, a part conveying assembly is arranged on one side of the marking machine driving assembly, and an image acquisition assembly is arranged above the base assembly; the marking machine driving assembly comprises a first linear guide rail, a supporting bracket is slidably connected to the first linear guide rail, a second linear guide rail is arranged on the supporting bracket, and a laser marking machine is arranged on the second linear guide rail; the part conveying assembly comprises a lifting tray unit, the lifting tray unit is connected to a driving unit, and the lifting tray unit is arranged below the laser marking machine; the device can directly mark the gear shaft system after assembling the gear teeth, avoids the problem that the gear teeth are assembled incorrectly due to the unconscious errors of workers when marking before the gear teeth are assembled, has higher precision when marking after the gear teeth are assembled, the marks marked by the laser marking machine are more wear-resistant, and the phenomenon of marking errors does not occur when the device is maintained after being sold.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gear marking, and relates to a gear shaft tooth marking machine and a marking method. BACKGROUND

[0002] The main and auxiliary box double-intermediate shaft structure transmission box is a front and rear combined transmission box, and power is transmitted by the symmetrical double-intermediate shaft structure in the two box bodies. The symmetrical structure eliminates the bending moment borne by the input / output shaft, and can effectively improve the performance and service life of the transmission box product. However, the symmetrical structure brings the following requirements to the product assembly. First, the intermediate shaft assembly is assembled by a gear shaft (i.e. intermediate shaft) and an intermediate shaft gear, and the position state of the gear shaft and the gear of each intermediate shaft assembly needs to be ensured during assembly. Second, the intermediate shaft assembly needs to be assembled in the transmission, and the two intermediate shaft assemblies meshing with the input shaft and the output shaft need to be completely symmetrical and assembled into the box body.

[0003] In order to achieve the above requirements, the position degree of the gear shaft and the gear assembled thereon needs to be required. In order to ensure the position degree requirement, the gear needs to be marked during the assembly process. The existing method is to mark a "0" type mark on the side surface of any two adjacent shaft gears during the intermediate shaft machining process, as a subsequent assembly reference. Then, during the intermediate shaft assembly, the assembly worker marks a more conspicuous mark on the "0" type mark on the gear side with a marker pen as the tooth alignment reference of the intermediate shaft gear, and ensures the position degree requirement of the gear shaft and the gear through a special tooth alignment clamp based on the reference. In addition, the reference mark drawn by the marker pen is also used as the tooth alignment mark for the final assembly, to ensure that the two intermediate shafts are completely symmetrical during assembly. However, during assembly, the operator may make an unconscious mistake when assembling according to the "0" type mark, and the tooth alignment is performed according to the incorrect reference and the incorrect reference, which will cause the transmission box to be assembled with misaligned gears and the intermediate shafts to be asymmetrically distributed, seriously affecting the performance of the transmission. The operator may make an unconscious mistake, and the conspicuous mark drawn by the marker pen is inconsistent with the "0" mark. If the tooth alignment assembly and the final assembly are performed according to the conspicuous mark, the product performance will not be affected, but during after-sales service, the "0" type mark on the gear is worn out, and the after-sales service personnel mainly perform repair according to the "0" type mark on the gear, which will cause misaligned gears and misaligned gear meshing. At present, the "0" type mark is only marked on the gear shaft, and during after-sales repair, the repair personnel can only align the gears through the intermediate shaft gears, and cannot align the gears through the "0" mark on the original gear shaft. Therefore, errors are likely to occur during the reference conversion, resulting in tooth alignment errors. SUMMARY

[0004] The purpose of the present application is to solve the problem in the prior art that parts are mainly marked by hand with a marker pen during marking, which is prone to errors in assembly, and manual marking is prone to errors, resulting in the inconsistency between the marker pen mark and the "0" mark, which leads to the misalignment of the gear teeth during the assembly of the gearbox, the asymmetric distribution of the intermediate shaft, and the easy wear of the marker pen mark, and the problem that the gear teeth cannot be accurately aligned during after-sales service.

[0005] To achieve the above purpose, the present application adopts the following technical solutions:

[0006] A gear shaft tooth alignment marking machine, comprising a base assembly, a marking machine driving assembly is arranged on the base assembly, a part conveying assembly is arranged on one side of the marking machine driving assembly, an image acquisition assembly is arranged above the base assembly, and the image acquisition assembly is connected with a control unit;

[0007] The marking machine driving assembly comprises a first linear guide rail, a support bracket is connected to the first linear guide rail in a sliding manner, the support bracket can move horizontally along the first linear guide rail, a second linear guide rail is arranged on the support bracket, and a laser marking machine is arranged on the second linear guide rail and can move vertically along the second linear guide rail;

[0008] The part conveying assembly comprises a lifting tray unit, the lifting tray unit is connected with a driving unit, and the lifting tray unit is arranged below the laser marking machine.

[0009] Further improvements of the present application are as follows:

[0010] A marking machine mounting plate is arranged on the support bracket, the second linear guide rail is arranged on the marking machine mounting plate, a connecting plate is arranged on the second linear guide rail, the laser marking machine is arranged on the connecting plate, and the connecting plate is connected with an electric cylinder.

[0011] The support bracket is connected with a driving cylinder on both sides.

[0012] The lifting tray unit comprises a tray support bracket, a tray rack is arranged on the tray support bracket, and the tray rack is used for placing a part tray.

[0013] The tray support bracket is connected with a tray cylinder, and the tray cylinder is arranged on the base assembly.

[0014] The image acquisition unit comprises a camera support bracket, the camera support bracket is arranged on one side of the first linear guide rail, and a visual camera is arranged on the camera support bracket.

[0015] The marking machine driving assembly is arranged at the upper end of the base assembly.

[0016] The part conveying assembly is arranged at the side end of the base assembly.

[0017] The laser marking machine is provided with a dust hood.

[0018] The base assembly comprises a fixed base, and a device base is arranged on the fixed base, and the marking machine driving assembly, the part conveying assembly and the image acquisition assembly are arranged on the device base.

[0019] A gear shaft tooth pairing identification marking method comprises the following steps:

[0020] S1: conveying the shafting part with completed tooth pairing to a marking station through a part conveying assembly;

[0021] S2: scanning the shafting part to obtain a part model, and obtaining a preset marking template of the model based on the obtained part model;

[0022] S3: taking a photo of the current part through an image acquisition assembly to obtain the position of the current part;

[0023] S4: comparing the obtained part position with the preset marking template, if the comparison result meets the marking requirement, moving the laser marking machine to a marking position to start marking, if the comparison result does not meet the marking requirement, alarming the equipment to stop marking.

[0024] In the step S2, the part is scanned through a code scanning gun to obtain a scanning result.

[0025] Compared with the prior art, the present application has the following beneficial effects:

[0026] The present application discloses a gear shaft tooth pairing identification marking machine, which adjusts the up-down and front-back position movement of the laser marking machine through the cooperation of the first linear guide rail and the second linear guide rail, and the position adjustment of the laser marking machine is more flexible based on the position of the part to be marked. The position of the part is adjusted through the lifting tray, the image acquisition unit can take a photo of the position of the part, and the laser marking machine is started to mark according to the comparison result of the photo. The device disclosed by the present application can directly mark the assembled gear shaft with paired teeth, avoids the problem of assembling wrong teeth due to worker's unconscious mistake when marking before pairing teeth, has higher precision after assembling paired teeth, the mark marked by the laser marking machine is more wear-resistant, and the mark will not be worn during use, the phenomenon of marking error will not occur during maintenance, and the failure rate of manual marking is reduced.

[0027] Further, in the marking machine disclosed by the present application, the marking machine driving assembly and the part conveying assembly are arranged at the upper end and the side end of the base assembly respectively, so that interference is avoided when adjusting the positions of the two components, and the relative position adjustment of the two components is more flexible.

[0028] Further, the laser marking machine is provided with a dust hood, which can accommodate the dust generated during marking, so as to avoid the influence of smoke on normal marking.

[0029] The application discloses a gear shaft tooth marking method, which comprises the following steps: conveying the shafting part which has completed tooth assembly to a marking station, scanning and taking a photo of the shafting part, obtaining the model of the part according to the scanning result, obtaining a preset printing template of the model, comparing the printing template with the taken photo, and marking the shafting part as a whole, so that the gear and the gear shaft are both marked, the accuracy of the two marks is improved, and the marks are not worn during use, so that tooth error is avoided during repair or maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0031] Figure 1 It is a whole structural diagram of the application;

[0032] Figure 2 It is a laser marking machine installation structure diagram of the application;

[0033] Figure 3 It is a support bracket assembly diagram of the application;

[0034] Figure 4 It is a base assembly diagram of the application;

[0035] Figure 5 It is a lifting tray unit assembly diagram of the application;

[0036] Figure 6 It is a marking flowchart of the application.

[0037] 1-fixed base; 2-equipment base; 3-camera support; 4-; 5-vision camera; 6-support bracket; 7-first linear guide rail; 8-marking machine mounting plate; 9-electric cylinder; 10-second linear guide rail; 11-connection plate; 12-laser marking machine; 16-tray support frame; 17-tray cylinder. DETAILED DESCRIPTION

[0038] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work fall within the scope of protection of the present application.

[0040] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0041] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0042] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0043] In the description of the embodiments of the present application, it should also be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] The present application will be described in further detail below with reference to the drawings:

[0045] Referring toFigures 1 to 5 The embodiment of the present application discloses a gear shaft tooth marking marking machine, and provides the marking machine based on shafting parts after tooth marking is completed, avoids part post-appearance marking error and maintenance marking error phenomenon.

[0046] Referring to Figure 1 The embodiment of the present application discloses a gear shaft tooth marking marking machine, and provides the marking machine based on shafting parts after tooth marking is completed, avoids part post-appearance marking error and maintenance marking error phenomenon.

[0047] The marking machine driving assembly comprises a first linear guide rail 7, a support bracket 6 is slidably connected on the first linear guide rail 7, the support bracket 6 can move horizontally along the first linear guide rail 7, a second linear guide rail 10 is arranged on the support bracket 6, and a laser marking machine 12 is arranged on the second linear guide rail 10; the part conveying assembly comprises a lifting tray unit, the lifting tray unit is connected with a driving unit, and the lifting tray unit is arranged below the laser marking machine 12.

[0048] Further, in the embodiment of the present application, the base assembly comprises a fixed base 1, and a device base 2 is fixedly arranged at the upper end of the fixed base 1, wherein the marking machine driving assembly is arranged at the upper end of the device base 2, and the part conveying assembly is arranged at the side end of the device base 2.

[0049] Referring to Figures 2-4 Further, in the embodiment of the present application, the marking machine driving assembly comprises a support seat 18, the support seat 18 is fixedly arranged at the upper end surface of the device base 2, a first linear guide rail 7 is arranged on the support seat 18, a support bracket 6 is slidably connected on the first linear guide rail 7, driving cylinders are respectively connected to the two sides of the support bracket 6, the driving cylinders drive the support bracket 6 to move back and forth along the first linear guide rail 7, a marking machine mounting plate 8 is arranged on the support bracket 6, a second linear guide rail 10 is arranged on the marking machine mounting plate 8, a connecting plate 11 is slidably connected on the second linear guide rail 10, a laser marking machine 12 is fixedly arranged on the connecting plate 11, an electric cylinder 9 is also arranged on the connecting plate 11, the electric cylinder 9 is arranged on one side of the second linear guide rail 10, the connecting plate 11 is connected with the electric cylinder 9, under the cooperation of the electric cylinder 9 and the connecting plate 11, the laser marking machine 12 can vertically move up and down along the second linear guide rail 10, and the cooperation of the support bracket 6 can realize the forward-backward and up-down movement of the laser marking machine 12.

[0050] Further, in the embodiment of the present application, the laser marking machine 12 is connected with a dust hood 13, the dust hood can accommodate the dust generated in marking, so that the smoke dust does not affect normal marking.

[0051] Further, in the embodiment of the present application, the part transmission assembly comprises a lifting tray unit, the lifting tray unit adjusts the position of up and down movement through a tray cylinder 17, and the specific structure is:

[0052] Referring to Figure 5 Further, in the embodiment of the present application, the tray cylinder 17 is fixedly arranged on the side end surface of the equipment base 2, the lifting tray unit comprises a tray support frame 16, the two sides of the tray support frame 16 are respectively connected with corresponding tray cylinders 17, the up and down movement of the cylinder 17 can drive the up and down movement of the tray support frame 16, thereby driving the up and down movement of the tray, the tray support frame 16 is fixedly arranged with a tray rack 15, and a plurality of tray supports 14 are arranged on the tray rack 15, the tray supports 14 are used for supporting the tray, and the shaft part to be marked is placed on the tray.

[0053] Further, in the embodiment of the present application, a camera support 3 is fixedly arranged on the upper end surface of the equipment base 2, the upper part of the camera support 3 is connected with a camera connecting plate 4, the camera connecting plate 4 is fixedly arranged with a visual camera 5, the visual camera 5 is used for shooting the position of the part on the tray, and the collected image is transmitted to the control unit for next processing, specifically, the control unit is connected with a code scanning gun, the code scanning gun scans the part to be marked to obtain the part type, and sends the obtained type to the control unit, the control unit determines the marking template of the part to be marked according to the obtained type, compares the marking template with the collected image, and selects whether to mark according to the comparison result.

[0054] Further, in the embodiment of the present application, the control unit is an industrial computer, the embodiment of the present application will establish the printing template of the shaft part after each tooth matching in advance, and the pre-printing template is called through the industrial computer for the type to be printed,

[0055] The embodiment of the present application also discloses a gear shaft tooth matching marking method, that is, during tooth matching assembly, any tooth on the gear shaft tooth is taken as a reference to assemble the intermediate shaft gear in the tooth matching, after tooth matching, the relative positions of the shaft tooth and the intermediate shaft gear are identified, the tooth matching tooth grooves of the two are found, and then the two teeth of the tooth matching tooth grooves of the shaft tooth and the intermediate shaft gear participating in tooth matching are marked.

[0056] Secondly, a visual camera is placed at a gear shaft marking position, and the actual position of the incoming part is identified by photographing and identifying the visual camera.

[0057] Finally, when the part reaches the automatic marking station, the code is scanned to identify the part model, and the preset theoretical marking template is called up; the camera takes a picture to obtain the actual part placement position, and the template and the picture position are compared; if the comparison is successful within the reasonable error range of the position setting, the marking is automatically printed, and if the comparison fails, the equipment is alarmed.

[0058] Referring to Figure 6 , the specific marking method comprises the following steps:

[0059] 1) Preparation: count the gear shaft assembly models that need to be marked, confirm the theoretical marking points of the gear shaft assembly after tooth alignment for each model, and pre-establish the marking printing template of each model in the industrial computer of the marking machine;

[0060] 2) Tooth alignment (upper process): the gear shaft is aligned at the tooth alignment station, and the tooth alignment hot assembly is assembled by taking any gear tooth groove as a reference;

[0061] 3) Automatic identification of marking: when the well-aligned part assembly reaches the marking station through the tray, the station identifies the tray RFID tag through the code scanning gun, obtains the product model, calls the printing template of the model through the industrial computer device program, and the visual camera 5 takes a picture, which is sent to the industrial computer. The program system of the industrial computer compares the position of the picture with the position of the preset template to find and identify the printing marking position;

[0062] 4) Automatic marking: when the compared position is within the error requirement range and the comparison is successful, the laser marking machine 12 finds the best marking position by moving up and down and front and back through the connecting plate 11 and the support bracket 6, and performs automatic marking; when the compared position is outside the error requirement range and the comparison fails, the equipment is alarmed and the problem needs to be checked;

[0063] 5) Reinspection (lower process): the assembly part after completing the marking is transferred to the next station, the visual camera finds the marking point, and the position degree is automatically measured based on the marked marking, and it is checked whether the marked marking is correct, if correct, the product is transferred to the next station, if the reinspection result is out of tolerance, an alarm is issued.

[0064] The marking machine and the marking method disclosed in the embodiment of the application are used for marking on the two teeth of the shaft tooth and the intermediate shaft tooth gear tooth alignment tooth groove, compared with the original assembly before the marking on the shaft tooth, the marking machine and the marking method provided by the application can mark the shaft parts after tooth alignment at the same time, can ensure that the gear and the shaft tooth have markings, and can bring benefits to after-sales maintenance and reduce repair errors.

[0065] The above merely describes the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A gear shaft tooth alignment marking machine, characterized in that, The system includes a base assembly, on which a marking machine drive assembly is mounted, a part conveying assembly is mounted on one side of the marking machine drive assembly, and an image acquisition assembly is mounted above the base assembly, the image acquisition assembly being connected to a control unit. The marking machine drive assembly includes a first linear guide rail (7), a support bracket (6) is slidably connected to the first linear guide rail (7), the support bracket (6) can move horizontally along the first linear guide rail (7), a second linear guide rail (10) is provided on the support bracket (6), a laser marking machine (12) is provided on the second linear guide rail (10), and the laser marking machine (12) can move vertically along the second linear guide rail (10); The parts conveying assembly includes a lifting pallet unit, which is connected to a drive unit and is located below the laser marking machine (12); The marking machine drive assembly is located at the upper end of the base assembly; The parts conveying assembly is located on the side of the base assembly; The laser marking machine (12) is equipped with a dust suction hood (13); The support bracket (6) is provided with a marking machine mounting plate (8), the second linear guide rail (10) is provided on the marking machine mounting plate (8), the second linear guide rail (10) is provided with a connecting plate (11), the laser marking machine (12) is provided on the connecting plate (11), and the connecting plate (11) is connected to the electric cylinder (9). During gear assembly, any tooth on the gear shaft is used as a reference to assemble the intermediate shaft gear. After gear assembly, the relative positions of the shaft tooth and the intermediate shaft gear are identified to find the tooth grooves of the two. Then, markings are made on the two teeth of the tooth grooves of the shaft tooth and the intermediate shaft gear involved in the gear assembly. The lifting pallet unit includes a pallet support frame (16), on which a pallet rack (15) is provided, and the pallet rack (15) is used to place a parts pallet; The pallet support frame (16) is connected to the pallet cylinder (17), which is mounted on the base assembly; The image acquisition component includes a camera bracket (3), which is located on one side of the first linear guide rail (7), and a vision camera (5) is mounted on the camera bracket (3).

2. The gear shaft tooth marking machine according to claim 1, characterized in that, The two sides of the support bracket (6) are connected to the drive cylinder.

3. A gear shaft tooth alignment marking machine according to claim 1, characterized in that, The base assembly includes a fixed base (1), on which a device base (2) is provided. The marking machine drive assembly, the parts conveying assembly and the image acquisition assembly are all located on the device base (2).

4. A method for marking gear shaft teeth according to claim 1, characterized in that, Includes the following steps: S1: The shaft parts with the gears assembled are transferred to the marking station via the parts transfer assembly; S2: Scan the shaft system parts to obtain the part model, and obtain the preset marking template for that part model based on the obtained part model; S3: The image acquisition component takes a picture of the current part to obtain its position; S4: Compare the obtained part position with the preset marking template. If the comparison result meets the marking requirements, move the laser marking machine (12) to the marking position and start marking. If the comparison result does not meet the marking requirements, the equipment will alarm and stop marking.

5. A method for marking gear shaft teeth according to claim 4, characterized in that, In step S2, the part is scanned using a barcode scanner and the scan result is obtained.

Images