Quick feeding method for thin ring piece of vertical face grinder

Abstract

The application discloses a kind of vertical end face grinder thin ring piece quick feeding method, first, the center of positioning ring inner hole is aligned with the center of fixture disc hole position circle, second, 4 air claws are set to clamping state, and clamping feeding guide rod, the center of feeding guide rod is aligned with the center of fixture disc hole position circle, the height distance of feeding guide rod lower end and the height distance of the workpiece to be processed falling in fixture disc hole position circle is 1 / 3-1 / 2 of the thickness of the workpiece to be processed, install the sensor of each detection line;Finally, the workpiece to be processed of specified height is loaded in the upper end of the uppermost air claw, the action of 4 air claws is alternately switched and always keeps a pair of air claws clamping feeding guide rod, so that the workpiece on feeding guide rod enters hole position circle in fixture disc in turn from top to bottom.The advantages of the present application are: quick feeding, improve equipment production rhythm, in the field of standard parts, gasket class product processing can be widely popularized and applied.

Description

Technical Field

[0001] This invention relates to the field of machinery, specifically to a grinding machine, and more specifically to a feeding device for a grinding machine. Background Technology

[0002] In the production and processing of thin ring parts, due to the small size of the workpieces, large quantity, large market demand, and low profit per piece, the only way to maximize profits is to greatly shorten the processing cycle.

[0003] For thin ring parts that require grinding both the upper and lower planes to ensure product parallelism, a vertical through-type double-end face grinder is used in the machining process. Due to the short machining cycle, the traditional feeding method is to use a vibratory plate to assemble the material and then horizontally convey it to the fixture plate. It is difficult to stably, accurately, and trouble-free ensure that the feeding cycle is within 0.5 seconds. Using a 4-axis robot would greatly increase the cost of automation, thus increasing the product cost. Therefore, there is an urgent need for a new feeding method to solve the above technical problems and achieve high-speed and accurate feeding. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] A rapid feeding method for thin ring parts on a vertical end face grinding machine is employed, utilizing a rapid feeding device. The specific steps are as follows:

[0006] First, align the center of the inner hole of the positioning ring with the center of the hole circle of the fixture disk. Second, set the four pneumatic grippers to the clamping state and clamp the loading guide rod. Align the center of the loading guide rod with the center of the hole circle of the fixture disk. The height distance between the lower end of the loading guide rod and the bottom layer of the workpiece to be processed in the hole circle of the fixture disk should be 1 / 3 to 1 / 2 of the thickness of the workpiece. Install the sensors of each detection line. Finally, put the workpiece to be processed at the specified height into the upper end of the uppermost pneumatic gripper. Alternately switch the actions of the four pneumatic grippers while always keeping one pair of pneumatic grippers clamping the loading guide rod, so that the workpieces on the loading guide rod enter the hole circle of the fixture disk from top to bottom.

[0007] The structure of the rapid feeding device is as follows:

[0008] A clamping plate is installed at the lower end of the feeding guide rod. A positioning ring is located directly above the clamping plate and aligned with the hole circle of the clamping plate. Both the positioning ring and the clamping plate are fixed to the equipment base. Four pneumatic grippers are installed on the feeding guide rod, and the pneumatic grippers encircle the feeding guide rod. A sensor is installed at the upper end of each pneumatic gripper and the upper end of the clamping plate. The feeding guide rod and the positioning ring are concentric and are located above the hole circle of the clamping plate. The inner diameter of the positioning ring and the diameter of the hole circle of the clamping plate match the outer diameter of the workpiece to be processed. The height distance between the lower end of the feeding guide rod and the workpiece to be processed that falls in the hole circle of the clamping plate is 1 / 3 to 1 / 2 of the thickness of the workpiece to be processed. Each pneumatic gripper is connected to a cylinder, and an electric valve is installed on the pipe of each cylinder. The electric valve and the sensor are connected to the controller.

[0009] The upper end of the feeding guide rod corresponds to the outlet of the vibrating feeding plate.

[0010] The outer diameter of the feeding guide rod matches the inner diameter of the workpiece to be processed.

[0011] The positioning ring and clamping plate are both fixed to the equipment base by screws and pins.

[0012] The advantages of this invention are: when applied to vertical rotary through-feed double-end face grinding machines, it can quickly load materials into continuously processed equipment, achieving rapid loading and improving the production cycle of the equipment. It can be widely promoted and applied in the processing of gaskets in the field of standard parts. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention, and also a schematic diagram of step 1;

[0014] Figure 2 This is a schematic diagram of step 2;

[0015] Figure 3 This is a schematic diagram of step 3;

[0016] Figure 4 This is a schematic diagram of step 4;

[0017] Figure 5 This is a schematic diagram of step 5;

[0018] Figure 6 This is a schematic diagram of step 6;

[0019] Figure 7 This is a schematic diagram of step 7;

[0020] Figure 8 This is a schematic diagram of step 8;

[0021] Figure 9 This is a schematic diagram of step 9;

[0022] Figure 10 This is a schematic diagram of step 10;

[0023] Figure 11 This is a schematic diagram of step 11;

[0024] Figure 12 This is a schematic diagram of step 12. Detailed Implementation

[0025] The invention is described in detail below with reference to the accompanying drawings. As shown in the figure, the rapid feeding device has a clamping plate 1 at the lower end of the feeding guide rod 4. A positioning ring 2 is positioned directly above the clamping plate 1, aligned with the hole circle of the clamping plate 1. The positioning ring 2 is fixed to the equipment base. Four pneumatic grippers are mounted on the feeding guide rod: gripper 1 8, gripper 2 7, gripper 3 6, and gripper 4 5. The grippers encircle the feeding guide rod. A sensor 10 is installed at the upper end of each gripper and the upper end of the clamping plate. The feeding guide rod and the positioning ring are concentric, both positioned above the hole circle of the clamping plate. The inner diameter of the positioning ring and the diameter of the hole circle of the clamping plate match the outer diameter of the workpiece 3 to be processed. The height distance between the lower end of the feeding guide rod and the workpiece falling within the hole circle of the clamping plate is 1 / 3 to 1 / 2 of the thickness of the workpiece. Each gripper is connected to a cylinder, and an electric valve is installed on the pipe of each cylinder. The electric valve and the sensor are connected to a controller.

[0026] The upper end of the feeding guide rod corresponds to the outlet 12 of the vibrating feeding plate 11.

[0027] The outer diameter of the feeding guide rod 4 is matched with the inner diameter of the workpiece 3 to be processed. Matching means that the outer diameter of the feeding guide rod 4 is smaller than the inner diameter of the workpiece 3 to be processed, and the workpiece 3 to be processed can slide automatically on the feeding guide rod 4.

[0028] The positioning ring 2 and the clamping plate 1 are both fixed to the equipment base by screws and pins.

[0029] Since the inner hole of the workpiece is used for positioning and guidance, the outer diameter of the feeding guide rod 4 cannot be fixed for different specifications of workpieces. Otherwise, the workpiece cannot slide automatically on the feeding guide rod 4, which makes fixing the feeding guide rod 4 a difficult point.

[0030] This invention uses four pneumatic grippers, gripper 1 (8), gripper 2 (7), gripper 3 (6), and gripper 4 (5), to fix the loading guide rod 4. During operation, gripper 1 (8) and gripper 3 (6) are released or clamped simultaneously, as are gripper 2 (7) and gripper 4 (5). This ensures that at least two grippers are always used to fix the loading guide rod 4, making the loading guide rod 4 essentially suspended above the fixture plate 1. This allows the workpiece 3 to be smoothly fed into the hole circle of the fixture plate 1 and enter the equipment for grinding the upper or lower plane.

[0031] For ease of description, the spaces above grippers 8, 7, 6, and 5 are labeled as areas A, B, C, and D, respectively, and the space above the fixture disk is labeled as area E. The workpiece 3 descends from area A to area E and finally enters the positioning hole of fixture disk 1. During this process, the four grippers alternately open and close in pairs. It is necessary to ensure that workpieces 3 are continuously fed into the positioning hole of fixture disk 1 in area E. Therefore, a minimum height for workpiece 3 is set in area E, designated as detection line two, and a sensor 10 is installed to extract feedback signals. When the height of workpiece 3 in area E is lower than the height of detection line two, material is replenished in area E. Detection line one is set above area A to detect the required height of workpiece 3, and a sensor 10 is also installed to extract feedback signals for height control. Additionally, in areas B, C, and D, each area has a sensor 10 to detect the presence or absence of workpieces, used to extract motion signals and control the grippers to perform material replenishment.

[0032] When the pneumatic grippers alternately loosen and clamp, the feeding guide rod 4 is prone to displacement. Therefore, a positioning ring 2 is installed below the second detection line in zone E. When the height of the workpiece 3 is lower than the second detection line, the second pneumatic gripper 7 and the fourth pneumatic gripper 5 are released simultaneously to replenish the material in zone E. At this time, the outer ring of the workpiece 3 below the second detection line and the inner hole of the positioning ring 2 are used for repositioning to avoid the displacement of the feeding guide rod 4 from affecting the continuous feeding of the mechanism.

[0033] How to use this invention:

[0034] After installation Figure 1 After assembling all structural components, firstly, align the center of the inner hole of the positioning ring 2 with the center of the hole circle of the fixture disk 1. Secondly, set the four pneumatic grippers to the clamping state and clamp the loading guide rod 4. Align the center of the loading guide rod 4 with the center of the hole circle of the fixture disk 1. The height distance between the lower end of the loading guide rod 4 and the bottom layer of the workpiece 3 in the hole circle of the fixture disk 1 should be 1 / 3 to 1 / 2 of the thickness of the workpiece 3. Install the sensors for the positions of detection line one and detection line two. Finally, load the workpiece 3 of the specified height into area A, and proceed according to... Figures 1 to 11 The sequence of actions—opening and closing of grippers 1 (8), 2 (7), 3 (6), and 4 (5)—is as follows: grippers 1 (8) and 3 (6) open or close simultaneously, while grippers 2 (7) and 4 (5) close or close simultaneously. This alternating action of the four grippers causes the workpiece on the loading guide rod 4 to... Figure 11 The state.

[0035] At this point, the pre-loading of the workpieces is complete, and the equipment can be started. Workpieces in zone E will continuously enter the inner hole of clamping disc 1 and be processed by the equipment. When the sensor at detection line 2 detects no workpiece, grippers 7 and 5 simultaneously release, allowing workpieces in zone B to enter zone C, and workpieces in zone D to enter zone E. Figure 8In this state, grippers 2 (7) and 4 (5) simultaneously clamp the feeding guide rod 4. Figure 9 In the state where the sensors in zones B and D detect no workpiece in that zone, the controller issues a command, causing grippers 8 and 6 to simultaneously release, allowing workpieces from zone A to enter zone B and workpieces from zone C to enter zone D. Subsequently, grippers 8 and 6 simultaneously clamp the loading guide rod 4. Figure 12 In this state, a sensor at one point on the detection line in area A detects that the number of workpieces in that area has not reached the height of the detection line. The controller sends a command to the upstream vibratory feeder, requesting replenishment of material, until the desired result is achieved. Figure 11 The state.

[0036] In addition, the sensors in the AD zone can control the grippers in the previous zone individually, requiring the workpiece in the previous zone to replenish the workpiece in that zone. This allows for more flexible control and cyclical replenishment of each zone, achieving intelligent, fast, and stable feeding. The expected feeding speed is 0.3 seconds per piece.

[0037] In this invention, the controller can utilize the control system built into the grinding machine itself.

Claims

1. A method for quickly feeding thin ring parts in a vertical face grinder, characterized in that: The fast feeding device is used for feeding; The structure of the fast feeding device is as follows: The lower end of the feeding guide rod is provided with a clamp disc, and a positioning ring is arranged above the clamp disc to align the hole position circle of the clamp disc, and the positioning ring and the clamp disc are fixed on the equipment base; four air claws are arranged on the feeding guide rod, which are air claw one, air claw two, air claw three and air claw four, and the air claws embrace the feeding guide rod; the feeding guide rod and the positioning ring are concentric, and the two are above the hole position circle of the clamp disc; The inner hole diameter of the positioning ring and the diameter of the hole position circle of the clamp disc match the outer diameter of the workpiece to be processed; the height distance between the lower end of the feeding guide rod and the workpiece to be processed falling in the hole position circle of the clamp disc is 1 / 3-1 / 2 of the thickness of the workpiece to be processed; each air claw is connected with an air cylinder, and an electric valve is arranged on the pipeline of each air cylinder; the electric valve and the sensor are connected with the controller; The space above the air claw one, the air claw two, the air claw three and the air claw four is marked as A area, B area, C area and D area, and the space above the clamp disc is marked as E area; a minimum height of the workpiece to be processed is arranged in the E area as a detection line two, and a sensor is installed to extract a feedback signal; when the height of the workpiece to be processed in the E area is lower than the height of the detection line two, the E area is supplemented; a detection line one is arranged above the A area to detect the height of the workpiece to be processed, and a sensor is also installed to extract a feedback signal for height control; in addition, in the B area, the C area and the D area, a sensor for detecting whether there is a workpiece is arranged in each area to extract a motion signal and control the air claw to supplement the workpiece; The specific steps are as follows: Firstly, the center of the inner hole of the positioning ring is aligned with the center of the hole position circle of the clamp disc; secondly, the four air claws are set in a clamping state and clamp the feeding guide rod, the center of the feeding guide rod is aligned with the center of the hole position circle of the clamp disc, the height distance between the lower end of the feeding guide rod and the lowest layer of the workpiece to be processed falling in the hole position circle of the clamp disc is 1 / 3-1 / 2 of the thickness of the workpiece to be processed, and the sensors of the detection line one and the detection line two are installed; finally, the workpiece to be processed of a specified height is loaded on the upper end of the uppermost air claw; the four air claws are used to fix the feeding guide rod, the air claw one and the air claw three are simultaneously loosened or clamped, and the air claw two and the air claw four are simultaneously loosened or clamped, so that at least two air claws are used to fix the feeding guide rod at any time, so that the feeding guide rod is equivalent to being suspended above the clamp disc, and the workpiece to be processed can be smoothly fed into the hole position circle of the clamp disc.

2. The thin ring quick feeding method of the vertical face grinder according to claim 1, characterized in that: The upper end of the feeding guide rod corresponds to the outlet of the vibrating feeding disc.

3. The thin ring quick feeding method of the vertical face grinder according to claim 2, characterized in that: The outer diameter of the feeding guide rod matches the inner hole diameter of the workpiece to be processed.

4. The thin ring quick feeding method of the vertical face grinder according to claim 2, characterized in that: The positioning ring and the clamp disc are fixed on the equipment base through screws and pins.

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