Horizontal internal grinding device

Abstract

The application discloses a horizontal internal grinding device for roundness, which is characterized by the following technical scheme: a bed body is arranged, a grinding head is arranged on the bed body, a bent plate is arranged on the bed body, a feeding guide back plate and an intermediate material guide back plate are connected together to form a track for moving a workpiece to be processed, an oil cylinder is arranged in an oil cylinder fixing seat, an end of the oil cylinder is connected with the fixing seat, the fixing seat is connected with a mechanical hand assembly, a linkage plate is arranged on one side of the oil cylinder fixing seat, the linkage plate is pivotally connected with the quick feeding guide back plate, the linkage plate is slidably connected with the oil cylinder fixing seat, an upper end of the linkage plate is abutted with one side of a roller, the roller is pivotally connected with a lower end of a jacking rod, an upper end of the jacking rod is connected with a jacking block, and an upper end of the jacking block corresponds to the track. The application has the following advantages: in the feeding process, the piston ring cooperates with the track to roll and feed, the workpiece gravity is the driving force, and the oil cylinder is used as the power source for feeding, feeding, discharging and cutting, and the working processes are matched with each other and are operated in linkage to ensure the smoothness of the whole processing link.

Description

Technical Field

[0001] This invention relates to the field of machining, specifically to a device for machining the inner hole of precision parts. Background Technology

[0002] The internal bore of piston rings is typically machined using an internal grinding machine, similar to the machining of bearing rings. Positioning is achieved using the outer diameter and end face. Piston rings require high precision and high machining efficiency. Traditional feeding methods include combinations of double hydraulic cylinder feeding and double air cylinder feeding, as well as combinations of single hydraulic cylinder feeding and double air cylinder feeding. The overall automatic feeding structure varies, resulting in relatively high costs and complex control programs, which lack a cost advantage in today's competitive industry. Summary of the Invention

[0003] To address the aforementioned problems, this invention discloses a horizontal internal grinding device.

[0004] The specific technical solution is as follows:

[0005] A horizontal internal grinding device includes a bed with a grinding head mounted on it. A curved plate is also provided on the bed. A rapid feeding guide back plate is mounted on the curved plate and fixed thereto. An intermediate guide back plate is fixed to the rapid feeding guide back plate. The feeding guide back plate and the intermediate guide back plate are connected to form a track for moving the workpiece. A hydraulic cylinder mounting base is also provided on the rapid feeding guide back plate, housing a hydraulic cylinder. The end of the hydraulic cylinder is connected to the mounting base, which is connected to a robotic arm assembly. A clamping assembly is also provided at the corresponding position, and a connecting plate is also provided on one side of the cylinder fixing seat. The connecting plate is axially connected to the fast feeding guide back plate. The connecting plate is slidably connected to the cylinder fixing seat. The upper end of the connecting plate abuts against one side of the roller. The roller is axially connected to the lower end of the lifting rod. The upper end of the lifting rod is connected to the lifting block. The upper end of the lifting block corresponds to the track. The rolling seat set on the fast feeding guide back plate restricts the lateral displacement of the lifting rod. A feeding guide block is also provided at the connection between the feeding guide back plate and the intermediate guide back plate.

[0006] The linkage plate is provided with a strip groove, and the cylinder mounting base is provided with a protrusion, which is connected to the strip groove.

[0007] To adjust the position of the robotic arm, the robotic arm assembly is connected to the fixed seat at the end of the hydraulic cylinder via a limit screw.

[0008] A spring is installed between the lifting rod and the roller.

[0009] The robotic arm assembly includes a lifting plate connected to the end of a hydraulic cylinder. The lifting plate has a through hole at its lower end for a grinding head to extend into and process the workpiece. A stop block is provided on one side of the lifting plate, with the lower end of the stop block abutting against one side of the workpiece. A lifting block is provided on the other side of the workpiece, and the lifting block is mounted on the lifting plate. A connecting piece is also provided on the lifting plate, and the connecting piece is fixedly connected to a material storage stop bar.

[0010] The material storage stop is L-shaped and its outline abuts against the processed workpiece to prevent it from falling. At the same time, the processed workpiece abuts against the workpiece to be processed.

[0011] The lifting plate is also connected to the discharge guide block.

[0012] The clamping assembly includes an electromagnetic chuck disposed at the corresponding location of the through hole. The outer diameter of the port of the electromagnetic chuck is consistent with the outer diameter of the workpiece to be processed. A clamping bracket is also disposed on the fast feeding guide back plate.

[0013] The clamp bracket has a V-shaped layout, and its shape is complementary to that of the lifting plate of the robotic arm assembly.

[0014] The outer side of the intermediate material guide back plate abuts against the limiting guide block, and the limiting guide block is fixedly installed on the rapid feeding guide back plate to limit the displacement of the intermediate material guide back plate.

[0015] The advantages of this invention are: the feeding process is achieved by the piston ring cooperating with the track to roll and feed the material. The workpiece gravity is the driving force. The hydraulic cylinder is the driving force to realize the power source of "feeding, loading, unloading and cutting". When the piston rod of the hydraulic cylinder is retracted to its shortest length, the feeding guide back plate and the intermediate guide back plate are connected to form the track for moving the workpiece and the space reserved in the robot arm assembly for storing the workpiece. The distance between the storage stop bar and the lifting plate is the diameter of the workpiece to be processed, which ensures that the working process is matched and linked to each other, making the entire processing link smooth. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram showing the structural state of the lifting plate of the present invention when it moves upward;

[0018] Figure 3 This is a schematic diagram of the structural state of the lifting plate of the present invention when it moves downward;

[0019] Figure 4 This is a schematic diagram of the robotic arm components and the electromagnetic chuck.

[0020] Figure 5 This is a schematic diagram of the robotic arm component structure. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] A horizontal internal grinding device includes a bed 1, on which a grinding head 21 is mounted. A curved plate 2 is also mounted on the bed 1. A rapid feeding guide back plate 3 is mounted on the curved plate 2, a feeding guide back plate 4 is fixed to the curved plate 2, and an intermediate guide back plate 23 is fixed to the rapid feeding guide back plate 3. The feeding guide back plate 4 and the intermediate guide back plate 23 are connected together to form a track for the movement of the workpiece 8. A hydraulic cylinder mounting base 14 is also mounted on the rapid feeding guide back plate 3, and a hydraulic cylinder 13 is housed within the hydraulic cylinder mounting base 14. The end of the hydraulic cylinder 13 is connected to a mounting base 17, which is connected to a robotic arm assembly 19. A clamping assembly 15 is also provided at the corresponding position. A connecting plate 10 is also provided on one side of the cylinder fixing seat 14. The connecting plate 10 is axially connected to the fast feeding guide back plate 3. The connecting plate 10 is connected to the cylinder fixing seat 14. The upper end of the connecting plate 10 abuts against one side of the roller 9. The roller 9 is axially connected to the lower end of the lifting rod 6. The upper end of the lifting rod 6 is connected to the lifting block 7. The upper end of the lifting block 7 corresponds to the track. The rolling seat 12 provided on the fast feeding guide back plate 3 restricts the lateral displacement of the lifting rod 6. A feeding guide block 5 is also provided at the connection of the channel formed by the feeding guide back plate 4 and the intermediate guide back plate 23.

[0023] The connecting plate 10 is provided with a strip groove 101, and the cylinder fixing seat is provided with a protrusion 141, which is engaged with the strip groove 101.

[0024] The robotic arm assembly 19 is connected to the fixed seat 17 at the end of the hydraulic cylinder via a limiting screw 18.

[0025] A spring 30 is provided between the lifting rod 6 and the roller 9.

[0026] The robotic arm assembly 19 includes a lifting plate 24 connected to the end of the hydraulic cylinder 13. The lifting plate 24 has a through hole at its lower end for the grinding head 21 to extend into and process the workpiece 8. A stop block 25 is provided on one side of the lifting plate, and the lower end of the stop block 25 abuts against one side of the workpiece 8. A lifting block 26 is provided on the other side of the workpiece 8. The lifting block 26 is provided on the lifting plate 24. A connecting piece 27 is also provided on the lifting plate 24, and the connecting piece 27 is fixedly connected to the material storage stop bar 28.

[0027] The material storage stop bar 28 is arranged in an L-shape, and the distance between the material storage stop bar 28 and the lifting plate 24 is the same as the diameter of the workpiece 8 to be processed.

[0028] The outline of the storage stop 28 abuts against the processed workpiece to prevent the processed workpiece from falling, while the processed workpiece abuts against the workpiece to be processed.

[0029] The lifting plate 24 is also connected to the discharge guide block 20.

[0030] The clamping assembly 15 includes an electromagnetic chuck 29 disposed at the corresponding position of the through hole. The front end face of the horizontal spindle protrudes from the curved plate 2 and is connected to the electromagnetic chuck 29. The outer diameter of the port of the electromagnetic chuck 29 is consistent with the outer circle size of the workpiece 8 to be processed. A clamping bracket 22 is also disposed on the fast feeding guide back plate 3.

[0031] The clamp bracket 22 has a V-shaped layout, and the shape of the clamp bracket 22 is complementary to the shape of the lifting plate 24 of the robot arm assembly 19.

[0032] The outer side of the intermediate material guide back plate 23 abuts against the limiting guide block 11, and the limiting guide block 11 is fixedly installed on the fast feeding guide back plate 3 to restrict the displacement of the intermediate material guide back plate 23.

[0033] This invention further discloses a method for precision machining of internal holes using the aforementioned horizontal internal grinding device:

[0034] Step 1: Adjust the limit screw 18 so that when the piston rod of the hydraulic cylinder 13 is retracted to its shortest length, the feeding guide back plate 4 and the intermediate guide back plate 23 are connected together to form the track for the movement of the workpiece 8, which corresponds to the space reserved in the robot arm assembly 19 for storing the workpiece 8 (the distance between the stop block 25 and the lifting block 26).

[0035] Step 2: Place the workpiece 8 to be processed onto the track of the feeding guide back plate 4, so that the workpiece 8 is stuck on the feeding guide block 5;

[0036] Step 3: Activate hydraulic cylinder 13. Hydraulic cylinder 13 begins operation, simultaneously performing the loading, feeding, and unloading steps. Hydraulic cylinder 13 extends, driving the connecting plate 10 to rotate. The connecting plate 10, via roller 9, lifts the lifting rod 6. The lifting rod 6, via lifting block 7, lifts the workpiece 8, passing over the height of the feeding guide block 5, completing the loading process for a single workpiece 8. The workpiece 8, under its own weight, moves within the track to the side wall of the lifting plate 24, where it abuts against the side wall of the stop block 25, awaiting unloading. One cycle completes the feeding process. While the workpiece 8 moves within the track, the hydraulic cylinder 13 drives the lifting plate 24 downward. The lifting plate 24 is equipped with a workpiece 8 that fell in during the previous cycle. The lifting plate delivers the workpiece 8 to the corresponding position of the electromagnetic chuck 29, thus completing the loading and unloading process. During the unloading process, the storage stop bar 28 moves downward with the lifting plate. The processed part 31, without the constraint of the storage stop bar 28, is discharged along the shape of the discharge guide block 20.

[0037] Step 4: Machining. The electromagnetic chuck holds the workpiece 8 to be processed, and the grinding head 21 extends into the through hole of the lifting plate 24 to enter the inner circle of the workpiece 8 to begin machining.

[0038] Step 5: Cutting. The hydraulic cylinder 13 retracts, causing the lifting plate 24 to move upward. At the same time, the lifting block 26 lifts the processed part 31 away from the electromagnetic chuck 29. When it moves to the corresponding position of the port of the intermediate guide back plate 23, the processed part 31 moves to the storage stop bar 28 by its own weight and abuts against the storage stop bar 28. At this time, the workpiece 8 is freed from the constraint of the stop block 25 and moves from the intermediate guide back plate to the lifting plate 24 (the distance between the stop block 25 and the lifting block 26), and abuts against the processed part 31. When the hydraulic cylinder is about to extend, the lifting plate 24 sends the workpiece 8 into the corresponding position of the electromagnetic chuck. Since the distance between the storage stop bar 28 and the lifting plate 24 is the diameter of the workpiece 8, the newly entered workpiece 8 falls exactly into the lifting plate, completing the cutting process.

[0039] To ensure greater accuracy throughout the machining process, a position sensor 142 can be installed at the vertical stroke of the hydraulic cylinder to confirm its position.

Claims

1. A horizontal internal grinding device, characterized in that: A machine bed is provided, on which a grinding head is mounted. A bending plate is also provided on the machine bed, and a rapid feeding guide back plate is mounted on the bending plate and fixed thereto. An intermediate guide back plate is fixed to the rapid feeding guide back plate, and the two plates are connected to form a track for the workpiece to be processed. A hydraulic cylinder mounting base is also provided on the rapid feeding guide back plate, housing a hydraulic cylinder. The end of the hydraulic cylinder is connected to the mounting base, which is connected to a robotic arm assembly. A clamping assembly is located at a position corresponding to the robotic arm assembly. A connecting plate is also provided on one side of the hydraulic cylinder mounting base, shaft-connected to the rapid feeding guide back plate. The upper end of the connecting plate abuts against one side of a roller, which is shaft-connected to the lower end of a lifting rod. The upper end of the lifting rod is connected to a lifting block, which corresponds to the track. A rolling seat on the rapid feeding guide back plate restricts the lifting. The rod moves laterally, and a feeding guide block is provided at the connection between the feeding guide back plate and the intermediate guide back plate; the robot arm assembly includes a lifting plate connected to the end of the hydraulic cylinder. The lifting plate has a through hole at its lower end for the grinding head to extend into and process the workpiece. A stop block is provided on one side of the lifting plate, and the lower end of the stop block abuts against one side of the workpiece. A lifting block is provided on the other side of the workpiece. The lifting block is set on the lifting plate, and a connecting piece is also provided on the lifting plate. The connecting piece is fixedly connected to the storage stop rod. When the piston rod of the hydraulic cylinder is retracted to its shortest length, the feeding guide back plate and the intermediate guide back plate are connected together to form a track for the movement of the workpiece and a space reserved in the robot arm assembly for storing the workpiece. The distance between the storage stop rod and the lifting plate is one diameter of the workpiece. The storage stop rod is L-shaped, and the outline of the storage stop rod abuts against the processed part to prevent the processed part from falling. At the same time, the processed part abuts against the workpiece.

2. The horizontal internal grinding device according to claim 1, characterized in that: The linkage plate is provided with a strip groove, and the cylinder mounting base is provided with a protrusion, which is connected to the strip groove.

3. The horizontal internal grinding device according to claim 1, characterized in that: To adjust the position of the robotic arm, the robotic arm assembly is connected to the fixed seat at the end of the hydraulic cylinder via a limit screw.

4. The horizontal internal grinding device according to claim 1, characterized in that: A spring is installed between the lifting rod and the roller.

5. The horizontal internal grinding device according to claim 4, characterized in that: The lifting plate is also connected to the discharge guide block.

6. The horizontal internal grinding device according to claim 4, characterized in that: The clamping assembly includes an electromagnetic chuck disposed at the corresponding location of the through hole. The outer diameter of the port of the electromagnetic chuck is consistent with the outer diameter of the workpiece to be processed. A clamping bracket is also disposed on the fast feeding guide back plate.

7. The horizontal internal grinding device according to claim 6, characterized in that: The clamp bracket has a V-shaped layout, and its shape is complementary to that of the lifting plate of the robotic arm assembly.

8. The horizontal internal grinding device according to claim 1, characterized in that: The outer side of the intermediate material guide back plate abuts against the limiting guide block, and the limiting guide block is fixedly installed on the rapid feeding guide back plate to limit the displacement of the intermediate material guide back plate.

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