Teaching and practical training device for bench worker skill assembly

Abstract

The invention discloses a bench worker skill assembly teaching practical training device, belongs to the technical field of bench worker assembly teaching, and can comprehensively inspect the bench worker assembly skill level. The platform mainly comprises a platform body, a bench vice and an assembly adjusting unit are installed on the platform body, the assembly adjusting unit comprises an installation bottom plate, a sliding rail pair is arranged on the installation bottom plate, a lead screw assembly is arranged on the portion, between the sliding rail pair, of the installation bottom plate, and a sliding block installation plate I and a sliding block installation plate II are installed on the sliding rail pair in a sliding mode. A lead screw of the lead screw assembly is connected with a sliding block mounting plate I through a lead screw nut, a bearing seat I is arranged on the sliding block mounting plate I, a bearing seat II is arranged on the sliding block mounting plate II, and a positioning shaft is arranged on the bearing seat I; the assembly precision is judged by rotating the lead screw assembly to drive the coaxial error of the positioning shaft and the inner hole of the bearing seat II. The device is mainly used for bench worker skill assembly teaching practical training.

Description

Technical Field

[0001] The invention relates to the technical field of benchwork assembly teaching, and in particular to a benchwork skill assembly teaching and training device. Background Art

[0002] At present, the assembly teaching devices for fitters in many enterprises or vocational and technical schools have simple structures, low assembly precision, and do not focus on the mechanical principles in the assembly process. Therefore, it is necessary to improve the level of assembly teaching and training devices to improve the professional skills of assembly fitters. Summary of the invention

[0003] The purpose of the present invention is to provide a benchwork skill assembly teaching and training device, which can comprehensively examine the benchwork assembly skill level; during the operation, the trainees need to make fine adjustments to the gap, position accuracy, etc. in the assembly process, and give the adjusted accuracy requirements; after the assembly is completed, a functional test is performed to ensure that all functions are normal, so that the operator can understand the structure, performance and working principle of the device.

[0004] The present invention is achieved through the following technical solutions:

[0005] A benchwork skill assembly teaching and training device comprises a platform body, a bench vise and an assembly adjustment unit are installed on the platform body, the assembly adjustment unit comprises a mounting base plate, a slide rail pair is arranged on the mounting base plate, a screw assembly is arranged on the mounting base plate between the slide rail pairs, a slider mounting plate I and a slider mounting plate II are slidably mounted on the slide rail pair, a screw of the screw assembly is connected to the slider mounting plate I through a screw nut, a bearing seat I is arranged on the slider mounting plate I, a bearing seat II is arranged on the slider mounting plate II, and a positioning shaft is arranged on the bearing seat I; the assembly accuracy is judged by rotating the screw assembly to drive the coaxial error between the positioning shaft and the inner hole of the bearing seat II.

[0006] Furthermore, the inner hole of the bearing seat I is installed with a deep groove ball bearing, a bearing spacer sleeve and a pair of angular contact bearings in sequence from left to right, and the positioning shaft is installed in the deep groove ball bearing, the bearing spacer sleeve and the inner hole of the angular contact bearing.

[0007] Furthermore, one side of the positioning shaft is provided with a thread, and the threaded end of the positioning shaft is fixed on the bearing seat I through a round nut and a round nut flat washer.

[0008] Furthermore, end covers are provided at both ends of the bearing seat I through bolts.

[0009] Furthermore, the slider mounting plate I and the slider mounting plate II are both mounted on the slider pad, the slider pad is mounted on the slider, and the slider is slidably mounted on the slide rail pair.

[0010] Furthermore, the screw assembly includes a screw mounting seat, both ends of the screw are rotatably mounted in the screw mounting seat, and a handwheel is provided at one end of the screw.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. By assembling the assembly adjustment unit, the fitter's assembly skill level can be comprehensively examined.

[0013] 2. During the operation, trainees need to make fine adjustments to the gap, position accuracy, etc. during the assembly process, and give the accuracy requirements after the adjustment; after the assembly is completed, a functional test is performed to ensure that all functions are normal, so that the operator can understand the structure, performance and working principle of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a structural schematic diagram of the assembly adjustment unit of the present invention;

[0016] Figure 3 An exploded view of an assembly adjustment unit of the present invention;

[0017] Figure 4 It is a front view of the assembly adjustment unit of the present invention;

[0018] Figure 5 A top view of the assembly adjustment unit of the present invention;

[0019] Figure 6 It is a left side view of the assembly adjustment unit of the present invention;

[0020] Figure 7 It is a structural schematic diagram of the disassembly tool of the present invention;

[0021] Figure 8 It is a teaching schematic diagram of the disassembly tool of the present invention.

[0022] In the figure: 1. bench vise; 2. platform body; 3. assembly adjustment unit; 4. mounting base plate; 5. slider; 6. slider pad; 7. slider mounting plate II; 8. bearing seat II; 9. positioning shaft; 10. angular contact bearing; 11. bearing spacer sleeve; 12. deep groove ball bearing; 13. round nut; 14. bearing seat I; 15. end cover; 16. round nut flat washer; 17. slider mounting plate I; 18. lead screw assembly; 19. slide rail pair. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] like Figure 1 – Figure 6 As shown, embodiment 1, a bench worker skill assembly teaching and training device, includes a platform body 2, on which a bench vise 1 and an assembly adjustment unit 3 are installed, the assembly adjustment unit 3 includes a mounting base plate 4, on which a slide rail pair 19 is provided, and on the mounting base plate 4 between the slide rail pairs 19, a screw assembly 18 is provided, on the slide rail pair 19, a slider mounting plate Ⅰ17 and a slider mounting plate Ⅱ7 are slidably installed, respectively, the screw of the screw assembly 18 is connected to the slider mounting plate Ⅰ17 through a screw nut, the slider mounting plate Ⅰ17 is provided with a bearing seat Ⅰ14, the slider mounting plate Ⅱ7 is provided with a bearing seat Ⅱ8, and the bearing seat Ⅰ14 is provided with a positioning shaft 9; the assembly accuracy is judged by rotating the screw assembly 18 to drive the coaxial error between the positioning shaft 9 and the inner hole of the bearing seat Ⅱ8.

[0025] Embodiment 2, a benchwork skill assembly teaching and training device, the inner hole of the bearing seat Ⅰ14 is installed with a deep groove ball bearing 12, a bearing spacer sleeve 11 and a pair of angular contact bearings 10 from left to right, and the positioning shaft 9 is installed in the inner holes of the deep groove ball bearing 12, the bearing spacer sleeve 11 and the angular contact bearing 10; one side of the positioning shaft 9 is provided with a thread, and the threaded end of the positioning shaft 9 is fixed to the bearing seat Ⅰ14 through a round nut 13 and a round nut flat washer 16; both ends of the bearing seat Ⅰ14 are also provided with end covers 15 through bolts; the slider mounting plate Ⅰ17 and the slider mounting plate Ⅱ7 are both installed on the slider pad 6, the slider pad 6 is installed on the slider 5, and the slider 5 is slidably installed on the slide rail pair 19; the screw assembly 18 includes a screw mounting seat, both ends of the screw are rotatably installed in the screw mounting seat, and a handwheel is provided at one end of the screw, and the rest is the same as Embodiment 1.

[0026] The assembly method of the assembly adjustment unit 3 comprises the following steps:

[0027] Fix the installation base plate 4 on the surface of the platform body 2, and clean the surfaces with lint-free paper, put the marble ruler in the center of the installation base plate 4, use the marble ruler as the reference at the center position, install the HGH30 slide rail pair 19 and the slider 5, use the magnetic table holder to suck it onto one of the sliders 5, use the dial indicator head to touch the marble ruler, and determine the parallelism of the guide rail of the HGH30 slide rail pair 19 and the marble ruler as well as the flatness in the vertical direction. After this step is completed, the marble ruler and the guide rail in the HGH30 slide rail pair 19 form an assembly reference, and then use the measuring tool marble ruler to adjust the HGH30 slide rail pair 19 assembly process by yourself. Check the horizontality, flatness and equal height of the program (that is: after the slide rail pair 19 is assembled, check the equal height errors of the left and right rails; check the straightness error of the left linear guide in the vertical plane; check the straightness error of the left linear guide in the horizontal plane; check the straightness error of the right linear guide in the vertical plane; check the straightness error of the right linear guide in the horizontal plane; check the parallelism of the left and right linear guides in the vertical plane; check the parallelism of the left and right linear guides in the horizontal plane; check the parallelism of the ball screw and the linear guide in the horizontal plane; check the parallelism of the ball screw and the linear guide in the vertical plane). If there is any deviation, you can use the adjustment shims to perform leveling by yourself.

[0028] Install the screw assembly 18, first pre-tighten the screw mounting seats at both ends, replace the dial indicator with a ball screw measuring head, and attach the dial indicator base to the screw nut to measure the horizontality, verticality and axial play of the ball screw (i.e., detect the axial play of the ball screw), and pre-tighten it after adjustment.

[0029] Install the slider pad 6 and the slider mounting plate. During the installation process, manually level them first and then pre-tighten them, and use a measuring tool to accurately adjust the level of the two.

[0030] like Figure 7-Figure 8 As shown, use matching disassembly tooling (the disassembly tooling is a shell structure with assembly holes of several apertures) to assemble the positioning shaft 9, bearing seat Ⅰ14, end cover 15, bearings, etc. The use of special disassembly tooling can quickly and efficiently assemble the angular contact bearing 10, bearing spacer sleeve 11 and deep groove ball bearing 12. After this step is completed, use a measuring tool to measure the horizontality, verticality, play and runout of the proximal and distal ends of the positioning shaft 9, adjust it to meet the accuracy requirements and fix it, and use this as the assembly reference to install the bearing seat Ⅱ8 on the other side, insert the positioning shaft 9 into the bearing seat Ⅱ8, use a measuring tool to measure the horizontality, verticality, play and runout of the positioning shaft 9 again, use an adjusting gasket to adjust the bearing seat Ⅱ8, and fix it after adjusting it to meet the accuracy requirements.

[0031] After the bearing seat Ⅰ14 is assembled, the radial runout and axial movement of the main shaft of the bearing seat Ⅰ14 are detected; after the bearing seat Ⅰ14 is assembled with the HGH30 slideway pair 19, the parallelism of the main shaft of the bearing seat Ⅰ14 and the slideway in the horizontal plane is detected; after the bearing seat Ⅰ14 is assembled with the HGH30 slideway pair 19, the parallelism of the main shaft of the bearing seat Ⅰ14 and the slideway in the vertical plane is detected. After the bearing seat Ⅱ8 is assembled with the HGH30 slideway pair 19, the inner hole of the bearing seat Ⅱ8 is detected, and the parallelism of the core shaft and the slideway and the parallelism in the vertical plane are measured; after the bearing seat Ⅱ8 is assembled with the HGH30 slideway pair 19, the inner hole of the bearing seat Ⅱ8 is detected, and the parallelism of the core shaft and the linear guide and the parallelism in the horizontal plane are measured; after the bearing seat Ⅰ14 is assembled with the bearing seat Ⅱ8, the coaxial error within the stroke of any three points between the main shaft of the bearing seat Ⅰ14 and the inner hole of the bearing seat Ⅱ8 is detected.

[0032] After assembly, randomly determine three positions of the bearing seat Ⅱ8 to ensure that the bearing seat Ⅱ8 can be smoothly inserted or pulled out within the clearance fit range of 0.015mm during the movement of the positioning shaft.

[0033] During the assembly process, this assembly adjustment unit 3 includes all 17 kinds of assembly process precisions, and there is no fixed assembly reference during the assembly process. The assembler needs to set the assembly reference by himself to achieve the specified spatial precision after the assembly is completed.

[0034] After the assembly and adjustment unit 3 is assembled, it can be inspected using measuring tools and testing equipment to conduct a comprehensive inspection of the assembled product, including cleanliness, dimensional accuracy, shape accuracy, position accuracy, surface quality, performance indicators, etc.; the assembled product can be functionally tested to ensure that its various functions are normal, and whether the ball screw in the screw assembly 18 rotates flexibly and smoothly and the noise meets the requirements.

Claims

1. A benchwork skill assembly teaching and training device, comprising a platform body (2), on which a bench vise (1) and an assembly adjustment unit (3) are mounted, characterized in that: The assembly adjustment unit (3) comprises a mounting base plate (4), a slide rail pair (19) is provided on the mounting base plate (4), a lead screw assembly (18) is provided on the mounting base plate (4) between the slide rail pairs (19), a slider mounting plate I (17) and a slider mounting plate II (7) are respectively slidably mounted on the slide rail pair (19), a lead screw of the lead screw assembly (18) is connected to the slider mounting plate I (17) via a lead screw nut, a bearing seat I (14) is provided on the slider mounting plate I (17), a bearing seat II (8) is provided on the slider mounting plate II (7), and a positioning shaft (9) is provided on the bearing seat I (14); the assembly accuracy is judged by rotating the lead screw assembly (18) to drive the coaxial error of the positioning shaft (9) and the inner hole of the bearing seat II (8).

2. The benchwork skill assembly teaching and training device according to claim 1 is characterized by: The inner hole of the bearing seat I (14) is sequentially installed with a deep groove ball bearing (12), a bearing spacer sleeve (11) and a pair of angular contact bearings (10), and the positioning shaft (9) is installed in the inner holes of the deep groove ball bearing (12), the bearing spacer sleeve (11) and the angular contact bearing (10).

3. The benchwork skill assembly teaching and training device according to claim 2 is characterized in that: One side of the positioning shaft (9) is provided with a thread, and the threaded end of the positioning shaft (9) is fixed on the bearing seat I (14) through a round nut (13) and a round nut flat washer (16).

4. The benchwork skill assembly teaching and training device according to claim 2 is characterized in that: The two ends of the bearing seat Ⅰ (14) are also provided with end covers (15) through bolts.

5. The benchwork skill assembly teaching and training device according to claim 1 is characterized in that: The slider mounting plate I (17) and the slider mounting plate II (7) are both mounted on the slider pad (6), the slider pad (6) is mounted on the slider (5), and the slider (5) is slidably mounted on the slide rail pair (19).

6. The benchwork skill assembly teaching and training device according to claim 1 is characterized by: The screw assembly (18) comprises a screw mounting seat, both ends of the screw are rotatably mounted in the screw mounting seat, and one end of the screw is provided with a hand wheel.

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