Rocker arm type machine tool and marking and hardness detection line

Abstract

The invention belongs to the technical field of industrial assembly lines, and particularly relates to a rocker arm type machine tool and a marking and hardness detection line. A rocker arm type machine tool comprises a base, a vertical supporting shaft is arranged on the base, the supporting shaft is sleeved with a rotating seat capable of rotating along the supporting shaft, a vertical rail is arranged on the rotating seat, a rocker arm capable of sliding along the vertical rail is arranged on the rotating seat, the rocker arm is horizontally arranged, and a horizontal rail and a marking rail in the horizontal direction are arranged on the rocker arm. The rocker arm is provided with cutting equipment and hardness detection equipment which can slide along the horizontal track, and the rocker arm is provided with marking equipment which can slide along the marking track. Compared with the prior art, the device has the technical effects that the rocker arm type machine tool is arranged, switching of two automatic measuring stations is achieved through rotation, assembly line work is conveniently achieved, the machining period is shortened, and the manual labor amount is reduced.

Description

Technical Field

[0001] This invention belongs to the field of industrial production line technology, specifically relating to a rocker arm machine tool and a marking and hardness testing line. Background Technology

[0002] In the hardness testing of certain ring-shaped industrial products (hereinafter referred to as workpieces), it is necessary to mill a test sample, then conduct a hardness test, and only after passing the test can marking and other steps be performed to complete the process. These steps require manual operation, resulting in an excessively long processing cycle. Summary of the Invention

[0003] The technical problem to be solved by this invention is: how to design a radial arm machine tool and a marking and hardness testing line to shorten the processing cycle.

[0004] The specific technical solution of the present invention is as follows: A rocker arm machine tool includes a base, a vertical support shaft on the base, a rotating seat that can rotate along the support shaft, a vertical rail on the rotating seat, a rocker arm that can slide along the vertical rail on the rotating seat, the rocker arm being horizontally positioned, having a horizontal rail and a horizontal marking rail on it, a cutting device and a hardness testing device that can slide along the horizontal rail on the rocker arm, and a marking device that can slide along the marking rail on the rocker arm.

[0005] A marking and hardness testing line includes a workpiece production line and at least one processing area. The processing area has two continuous processing stations and a rocker arm machine tool as described in claim 1. Both continuous processing stations are on the rotation path of the rocker arm machine tool.

[0006] The workpiece production line includes a robot track on which a robot slides. One end of the robot track has a loading workpiece table, and the other end has a unloading workpiece table.

[0007] A preparation workpiece table is located upstream of the loading workpiece table.

[0008] The processing area has one manual processing station.

[0009] There are two processing areas, located on the same side of the workpiece production line.

[0010] The base plate of the processing station is a V-shaped plate with a high center and low sides. The two outer sides of the lower edge of the V-shaped plate are equipped with a chip collection and conveying mechanism. One end of the chip collection and conveying mechanism is connected to the chip collection and conveying mechanism, and the other end of the chip collection and conveying mechanism is the discharge end.

[0011] The loading workpiece table, unloading workpiece table, and preparation workpiece table all include a rotary table. A base is provided below the rotary table, and the rotary table is rotatably connected to the base through a slewing support bearing.

[0012] Compared with the prior art, the technical advantages of the present invention are that the present invention is equipped with a rocker arm machine tool, which realizes the switching between two automatic measurement stations by rotation, which facilitates assembly line operation, shortens the processing cycle, and reduces manual labor. Attached Figure Description

[0013] Figure 1 This is a top view of the present invention.

[0014] Figure 2 A three-dimensional schematic diagram of the processing area (I).

[0015] Figure 3 This is a top-down view of the machining station.

[0016] Figure 4 A three-dimensional schematic diagram of the processing area (II).

[0017] Figure 5 This is a schematic diagram of a rocker arm machine tool.

[0018] Figure 6 This is a schematic diagram of a marking machine.

[0019] Figure 7 This is a schematic diagram of the chip removal mechanism.

[0020] Figure 8 This is a schematic diagram of a rotary workpiece stage.

[0021] Figure 9 This is a stress diagram of a rocker arm machine tool (I).

[0022] Figure 10 This is a stress diagram of a rocker arm machine tool (II). Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 A marking and hardness testing line, comprising a workpiece production line 100 and at least one processing area.

[0025] like Figure 2 The workpiece production line 100 includes a robot track 110, on which a robot 120 is slidably mounted. One end of the robot track 110 is provided with a loading workpiece table 130, and the other end is provided with a unloading workpiece table 140.

[0026] like Figure 1 Upstream of the loading workpiece table 130 (with the workpiece conveying direction as a reference), there is a preparation workpiece table 150.

[0027] like Figure 2-3The processing area 200 is equipped with two continuous processing stations 210 and a rocker arm machine tool 300. Both continuous processing stations 210 are on the rotation path of the rocker arm machine tool 300.

[0028] like Figure 4 The processing area 200 has one manual processing station 220.

[0029] like Figure 5-6 The rocker arm machine tool 300 includes a base 310, on which a vertical support shaft (not shown in the figure) is provided. A rotary seat 320 that can rotate along the support shaft is sleeved. A vertical rail 321 is provided on the rotary seat 320. A rocker arm 330 that can slide along the vertical rail 321 is provided on the rotary seat 320. The rocker arm 330 is horizontally arranged and has a horizontal rail 331 and a horizontal marking rail 332. A cutting device 340 and a hardness testing device 350 that can slide along the horizontal rail 331 are provided on the rocker arm 330. A marking device 360 ​​that can slide along the marking rail 332 is provided on the rocker arm 330. The marking device 360, the cutting device 340 and the hardness testing device 350 are prior art and will not be described in detail.

[0030] like Figure 7 To facilitate chip removal, the base plate 211 of the processing station 210 is a V-shaped plate 211 with a high middle and low sides. Both outer sides of the lower edge of the V-shaped plate 211 are provided with chip collection and conveying mechanisms 212. One end of the chip collection and conveying mechanism 212 is connected to the chip collection and conveying mechanism 213, and one end of the chip collection and conveying mechanism 213 is the discharge end 214.

[0031] like Figure 8 The loading workpiece table 130, unloading workpiece table 140, and preparation workpiece table 150 all include a rotary table 131. A base 132 is located below the rotary table 131, and the rotary table 131 is rotatably connected to the base 132 via a slewing bearing. Thus, after a workpiece on the rotary table 131 is grasped by the robot 120 from the side closest to the robot 120, the rotary table 131 can rotate 90° or 180° to move the workpiece from the side furthest from the robot 120 to the side closest to the robot 120, making it more convenient for the robot 120 to grasp it.

[0032] The robot 120 is equipped with a 3D camera at its gripping end, which is used to scan and determine the position of the workpiece before gripping it.

[0033] Its working principle is as follows: Part 1: Characteristics of Radial Arm Machine Tools When switching workstations, the actuators of the rocker arm machine tool (marking device 360, cutting device 340 and hardness testing device 350) are in rotational motion, which is essentially rotating around the support axis. Compared with translation, which requires control of two elements (position and attitude), rotational motion only requires one element (position). As long as the position is correct, the attitude is correct for ring parts industrial products.

[0034] Therefore, the position and posture of a radial arm machine tool are easier to control, which facilitates the improvement of machining accuracy.

[0035] like Figure 9-10 Meanwhile, the self-deformation of the working part is small and does not affect the machining accuracy: When performing stress analysis on the rocker arm machine tool and hardness testing, a force of 3 tons needs to be applied. When performing stress analysis on the main body of the rocker arm machine tool, the maximum stress is 30.9MPa and the maximum deformation is 0.27mm.

[0036] Part Two: Working Steps for Marking and Hardness Testing Lines Assembly line operation mode: S10. Preparation: Place multiple workpieces 900 on the loading workpiece table 130.

[0037] S20, Loading: Robot 120 runs on robot track 110 to the end of one side of loading workpiece table 130. Robot 120's robotic arm picks up a workpiece 900. Robot 120 runs on robot track 110 to the first assembly line processing station 210. Robot 120's robotic arm places workpiece 900 on the fixture 230 of the assembly line processing station 210.

[0038] S30, Clamping: The clamp 230 moves to hold the workpiece 900 tightly.

[0039] S40, Rotation: According to the pre-entered product parameters, the rocker arm 330 of the rocker arm machine tool moves to the first assembly line processing station 210.

[0040] S50, Milling: The cutting equipment 340 of the rocker arm machine tool mills the area where hardness needs to be measured to produce a sample.

[0041] S60. Testing: The hardness testing equipment 350 of the rocker arm machine tool tests the sample and transmits the measurement data to the background computer.

[0042] S70, Marking: The marking equipment of the rocker arm machine tool marks the workpiece 900 with a 360° angle, and the rocker arm machine tool moves to a non-interference position.

[0043] S80, Unlock: Fixture 230 reverses its movement to unlock workpiece 900.

[0044] S90, Unloading: The robotic arm of robot 120 picks up workpiece 900 from the fixture 230 of the assembly line 210. Robot 120 runs on robot track 110 to the end of the unloading workpiece table 140 and places workpiece 900 on the unloading workpiece table 140.

[0045] S100, Transport: When there are enough workpieces 900 on the unloading workpiece table 140, replace it with a new unloading workpiece table 140 and transport the original unloading workpiece table 140 away.

[0046] S110 Cleaning iron filings: When there are enough tested samples and other iron filings on the base plate 211 of the processing station 210, use external force to blow the base plate 211 to clean the iron filings. The iron filings fall into the iron filings collection and conveying mechanism 212. The iron filings collection and conveying mechanism 212 moves to transport them to the iron filings collection and conveying mechanism 213. The iron filings collection and conveying mechanism 213 moves to discharge them into the trolley 215 below the discharge end 214.

[0047] It should be noted that this application has two assembly line processing stations 210. When the rocker arm machine tool is inspecting one of them, the robot 120 can perform loading / unloading operations on the other assembly line processing station 210, which improves efficiency.

[0048] Manual operation mode: For a small number of workpieces with non-standard or uncommon specifications, a manual operation mode can be used, specifically as follows: S10, Loading: The workpiece 900 is placed manually on the fixture 230 of the manual processing station 220.

[0049] S20, Clamping: The clamp 230 of the manual processing station 220 moves to hold the workpiece 900 tightly.

[0050] S30, Rotation: According to the pre-entered product parameters, the rocker arm 330 of the rocker arm machine tool moves to the manual processing station 220.

[0051] S40, Milling: The cutting equipment 340 of the rocker arm machine tool mills the area where hardness needs to be measured to produce a sample.

[0052] S50, Testing: The hardness testing equipment 350 of the rocker arm machine tool tests the sample and transmits the measurement data to the background computer.

[0053] S60, Marking: The marking equipment of the rocker arm machine tool marks the workpiece 900 with a 360° angle, and the rocker arm machine tool moves to a non-interference position.

[0054] S70, Unlock: Fixture 230 reverses its movement to unlock workpiece 900.

[0055] S80, Unloading: The workpiece 900 is manually removed from the fixture 230 at the manual processing station 220.

[0056] Compared to existing technologies, the technical advantages of this invention are as follows: This invention features a rocker arm machine tool, which allows for switching between two automatic measurement stations through rotation. This facilitates assembly line operations, shortens the processing cycle, and reduces manual labor. Simultaneously, it possesses a manual hardness testing function, facilitating hardness testing of other workshops or imported products. It integrates online automatic hardness testing with manual testing functions, expanding the flexibility and adaptability of the testing system.

[0057] Features of this application: S1, see also Figure 9-10 The stress analysis of the rocker arm machine tool shows that a force of 3 tons needs to be applied during hardness testing. The stress analysis of the main body of the rocker arm machine tool shows a maximum stress of 30.9 MPa and a maximum deformation of 0.27 mm, which meets the design requirements.

[0058] S2, the radial arm milling machine is used for milling the area of ​​the workpiece for hardness measurement, ensuring the accuracy of the machined plane before hardness measurement. The radial arm milling machine uses a standard model modified for CNC machining. A drilling spindle and a hardness testing mechanism are mounted on the crossbeam of the radial arm milling machine, responsible for the milling operation of the workpiece using a flat-head drill bit. Hardness testing is performed after milling. The drilling spindle and the hardness testing mechanism share a transverse axis, while lifting is driven by an independent mechanism. After drilling out the plane, the mechanism moves transversely, and the hardness testing mechanism applies downward pressure to capture images for hardness testing.

[0059] S3, Specific Parameters Camera parameters The 3D industrial camera uses a Mech-Mind brand industrial camera, featuring a binocular high-resolution color imaging system and a built-in robust 3D image processing algorithm, providing sub-millimeter measurement accuracy and generating high-quality RGB-D images. The camera is specifically designed for industrial applications, particularly suitable for scenarios such as large-scale, long-distance workpiece loading and unloading, disordered gripping, and assembly guidance. Near field of view: 1300 mm × 1100 mm @ 1500 mm; Far field of view: 2800 mm × 2600 mm @ 3500 mm; Net distance: 1500 mm; Measurement range (MR): 2000 mm; Resolution: 4000 × 3000 @ RGB image, 2448 × 2048 @ depth image; Z-axis repeatability: 0.2 mm @ 2500 mm; VDI / VDE accuracy: 0.3 mm @ 2500 mm²; Data types: Original image (black and white + color), depth image, RGB-D image; Acquisition time: 0.4–0.9 s; Image output delay time: 1.0–1.7 s.

[0060] Radial arm machine tool Maximum milling diameter: 40 mm; Spindle centerline to end (maximum): 2000 mm; Spindle centerline to end (minimum): 900 mm; Spindle head horizontal travel distance: 1100 mm; Spindle end face to bottom (maximum): 1500 mm; Spindle end face to bottom (minimum): 500 mm; Rocker arm lifting distance: 1000 mm; Rocker arm lifting speed: 0.017 m / s; Maximum allowable feed resistance of the spindle: 35000 N.

[0061] Other requirements: Overall Equipment Requirements: This equipment, with hardness testing as its core and automatic cutting and marking functions as secondary functions, forms an automated testing system. It automatically completes hardness testing, and the entire system operates stably, reliably, and efficiently. Through overall layout design and integrated control system design, it achieves fully automated marking, surface cutting, hardness testing, and data recording of target products. This testing line equipment must possess high flexibility, high adaptability, and high reliability to ensure the highest cost-effectiveness. The system has two preset operating modes: a fully automatic operation mode and a manual operation mode.

[0062] Automatic Marking: Marking Area: Workpiece end face, position adjustable; manual marking is performed on the circumferential surface. Marking Method: Laser marking or pneumatic marking. Marking Requirements: Depth 0.05mm~0.2mm, character height 6mm~8mm, character width 4mm~6mm, size adjustable. Program Requirements: Marking content maximum 20 characters (letter and number combination); able to automatically switch marking content according to predetermined rules, adapting to frequent switching of marking programs for different products; program can be edited, stored, referenced, and implement version control; able to simultaneously meet the marking requirements of two products operating in parallel. For parts with a wall thickness greater than 20mm, automatic marking is performed on the upper end face; for workpieces with a wall thickness less than 20mm or marked on the outer ring, manual marking is performed.

[0063] Automatic cutting: The cutting equipment automatically sets the tool according to the workpiece size, completing single-point and multi-point cutting of metal rings. Cutting depth is adjustable from 0.5mm to 3mm, with a surface roughness Ra ≤ 3.2um after cutting. Processing speed: ≤ 1 minute / point. It can adapt to uneven cutting surfaces, ensuring the cutting surface meets hardness testing requirements.

[0064] Automatic Hardness Testing: After automatic cutting, the hardness of the cut surface is automatically tested, with testing methods and accuracy meeting the American standard ASTM E10. The workpiece identification information and hardness test results are directly transmitted to the heat treatment process line via a host computer, enabling information exchange. Test force, loading and holding time, feed rate, and test speed can be manually adjusted and controlled. The image recognition light compensation system adapts to ambient light to ensure accurate reading.

[0065] For other details, please refer to the existing technology.

[0066] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A rocker arm machine tool (300), comprising a base (310), characterized in that: A vertical support shaft is provided on the base (310), and a rotating seat (320) that can rotate along the support shaft is provided on the support shaft. A vertical track (321) is provided on the rotating seat (320), and a rocker arm (330) that can slide along the vertical track (321) is provided on the rotating seat (320). The rocker arm (330) is horizontally set, and a horizontal track (331) and a horizontal marking track (332) are provided on it. A cutting device (340) and a hardness testing device (350) that can slide along the horizontal track (331) are provided on the rocker arm (330), and a marking device (360) that can slide along the marking track (332) is provided on the rocker arm (330).

2. A marking and hardness testing line, comprising a workpiece production line (100) and at least one processing area (200), characterized in that: The processing area (200) is provided with two flow processing stations (210) and a rocker arm machine tool (300) as described in claim 1. Both flow processing stations (210) are on the rotation path of the rocker arm machine tool (300).

3. The marking and hardness testing line as described in claim 2, characterized in that: The workpiece production line (100) includes a robot track (110), on which a robot (120) is slidably mounted. One end of the robot track (110) is provided with a loading workpiece table (130), and the other end is provided with a unloading workpiece table (140).

4. The marking and hardness testing line as described in claim 2, characterized in that: A preparation workpiece table (150) is provided upstream of the loading workpiece table (130).

5. The marking and hardness testing line as described in claim 2, characterized in that: The processing area (200) has one manual processing station (220).

6. The marking and hardness testing line as described in claim 2, characterized in that: There are two processing areas (200), located on the same side of the workpiece production line (100).

7. The marking and hardness testing line as described in claim 2, characterized in that: The base plate (211) of the processing station (210) is a V-shaped plate (211) with a high middle and low sides. The two outer sides of the lower edge of the V-shaped plate (211) are provided with a chip collection and conveying mechanism (212). One end of the chip collection and conveying mechanism (212) is connected to the chip collection and conveying mechanism (213), and one end of the chip collection and conveying mechanism (213) is the discharge end (214).

8. The marking and hardness testing line as described in claim 2, characterized in that: The loading workpiece table (130), unloading workpiece table (140), and preparation workpiece table (150) all include a rotary table (131). A base (132) is provided below the rotary table (131). The rotary table (131) is rotatably connected to the base (132) through a slewing support bearing.

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