Loading and unloading device for bearing outer ring processing

Abstract

The present invention relates to a loading and unloading device for processing the outer ring of a bearing, which comprises a cylinder, an upper clamping jaw and a lower clamping jaw, wherein the telescopic end of the cylinder is downwardly mounted on the lower end of a telescopic cantilever of a truss mechanism, the lower clamping jaw is mounted on the telescopic end below the cylinder, and the upper clamping jaw is mounted near one side below the cylinder, wherein the lower clamping jaw comprises a round rod and a cam block, wherein one end of the round rod is horizontally mounted on one side of the telescopic end of the cylinder, and the other end of the round rod is mounted on the cam block. The advantage is that the cam block is designed at one end of the round rod, and the cam block design meets the requirements of clamping the outer ring of a large-sized double-rib straight raceway bearing, the highest point of the cam block is at the middle of the inner side of the outer ring of the bearing, the outer ring of the bearing will not tilt during the hooking process, and the outer ring of the bearing will not be deflected when clamped with the upper clamping jaw, and the subsequent processing requirements of the grinder are met. Due to the design of the cam block, the original gravity rolling unloading method cannot be met, and the arc surface design and installation position of the cam block ensure that the front end of the round rod can be effectively unloaded even if it is tilted, and the cam block will not interfere with the annular baffle of the outer ring of the bearing during unloading.

Description

Technical Field

[0001] The invention relates to the field of bearing outer ring processing, and in particular to a loading and unloading device for bearing outer ring processing. Background Art

[0002] In the past, when the outer ring of the bearing was processed by the grinder, it was loaded and unloaded through the grinding truss loading and unloading gravity bin. The loading and unloading device at the lower end of the truss mechanism automatically grabbed the outer ring of the bearing at the loading position of the grinding truss loading and unloading gravity bin and sent it to the grinder for grinding wheel raceway. After the grinding was completed, the loading and unloading device at the lower end of the truss mechanism grabbed the ground outer ring of the bearing and sent it to the unloading position of the grinding truss loading and unloading gravity bin to complete the processing; in the past, the inner single rib of the outer ring of the bearing The outer ring of a straight raceway bearing or a small-sized double-rib straight raceway bearing, the loading and unloading devices of the bearing outer ring currently all use an upper clamp and a lower clamp mechanism. The upper clamp is a fixed plate and is installed on one side of the lower end of the cylinder, and the lower clamp is a round rod and is installed on the telescopic end of the cylinder. The upper clamp and the lower clamp cooperate to clamp the outer ring of the bearing; when the outer ring of a single-rib straight raceway bearing is clamped, the round rod extends from the inner side of the bearing outer ring without the annular rib, and the annular rib will not affect the cooperation between the round rod and the upper clamp When clamping, the round rod is extended into the middle position of the outer ring of the bearing, and the outer ring of the bearing will not have the problem of skewing on one side; when the outer ring of the small-sized double-rib straight raceway bearing is clamped, the length of the round rod is just enough to hook the inner side of the two annular ribs on the inner side of the outer ring of the bearing, so that the outer ring of the double-rib straight raceway bearing will not have the problem of skewing when clamping; but when the outer ring of the large-sized double-rib straight raceway bearing is clamped, the round rod needs to be lengthened so that it can be just hooked on the inner side of the two annular ribs on the inner side of the outer ring of the bearing, so that there will be no skewing problem. However, due to the large-sized bearing outer ring, the center clamping position space of the grinder is fixed, and there is not much space for the round rod to be pulled out from the outer ring of the bearing, and there is interference from the grinding wheel mechanism at the back, so the lengthening of the round rod cannot meet the needs of clamping the outer ring of the large-sized double-rib straight raceway bearing. If the round rod is not lengthened, the round rod will only hook the annular rib on one side when hooking, resulting in the deflection of the outer ring of the bearing, which will be skewed when clamping, and the position will be incorrect when loading, and the subsequent automatic processing will not meet the requirements at all.

[0003] In order to meet the problem of clamping the outer ring of large-sized double-rib straight raceway bearings and ensure smooth cutting, it is currently a major problem. Summary of the invention

[0004] In order to solve the above technical problems, the present invention proposes a loading and unloading device for bearing outer ring processing, which is cleverly designed and easy to use. It can stably clamp the outer ring of large-sized double-rib straight raceway bearings without tilting and can unload materials smoothly.

[0005] The technical solution of the present invention:

[0006] A loading and unloading device for processing the outer ring of a bearing comprises a cylinder, an upper clamp and a lower clamp. The telescopic end of the cylinder is downwardly mounted on the lower end of a telescopic cantilever of a truss mechanism, the lower clamp is mounted on the telescopic end below the cylinder, and the upper clamp is mounted near one side below the cylinder. The lower clamp comprises a round rod and a cam block. One end of the round rod is horizontally mounted on one side of the telescopic end of the cylinder, and the other end of the round rod is mounted on the cam block. The arc degree of the upward arc surface of the cam block is less than or equal to the arc degree of the inner diameter of the outer ring of the bearing, the outer side of the round rod is tangent to the inner side of the arc surface of the cam block, and when the lower clamp is installed, one end of the arc surface of the cam block is tilted upward at a certain angle; the upper clamp is designed to be plate-shaped.

[0007] The bearing outer ring is a double-rib straight raceway bearing outer ring, that is, an annular rib is designed at each of the two ends of the inner side of the outer ring, and a straight raceway is formed between the two annular ribs.

[0008] When the upper and lower clamps clamp the outer ring of the bearing, the raised end of the arc surface of the cam block of the lower clamp extends into the outer ring of the bearing and presses against the middle position of the inner straight raceway of the outer ring of the bearing, and the arc surface of the upper clamp presses on the upper outer side of the outer ring of the bearing.

[0009] The thickness of the cam block is less than or equal to the width of the straight raceway.

[0010] The upper jaw is installed below the cylinder and the lower middle portion is designed as an arc surface, the highest point of which is located above the highest point of the cam block.

[0011] Method for loading and unloading the outer ring of a bearing using the loading and unloading device for processing the outer ring of a bearing:

[0012] First, the outer ring of the bearing is placed at the loading position of the grinding truss loading and unloading gravity bin, and the truss mechanism drives the loading and unloading device used for the processing of the outer ring of the bearing to the loading position for grabbing.

[0013] The cylinder controls the lower clamp to move downward, and the truss mechanism controls the overall movement of the loading and unloading device used for bearing outer ring processing, so that the cam block of the lower clamp extends into the middle position of the bearing outer ring. The cylinder begins to contract, and the upper end of the cam block presses against the middle position of the inner side of the bearing outer ring, lifting the bearing outer ring horizontally until the arc surface of the upper clamp is pressed against the outer side of the bearing outer ring to complete the clamping.

[0014] The truss mechanism is then used to control the loading and unloading device for the outer ring processing of the bearing as a whole and the clamped outer ring of the bearing to move to the electromagnetic clamp position in the center of the grinder. The electromagnetic clamp is energized to adsorb the outer ring of the bearing. The cylinder controls the lower clamp to move downward to release the outer ring of the bearing until the highest point of the cam block is lower than the inner rib of the outer ring of the bearing. The truss mechanism then controls the loading and unloading device for the outer ring processing of the bearing as a whole to pull the cam block out of the outer ring of the bearing. The cylinder contracts to control the lower clamp to move upward, waiting for the grinder to complete the grinding of the outer ring of the bearing, and then repeating the above clamping action. After clamping, the electromagnetic clamp is powered off to release the outer ring of the bearing.

[0015] Finally, the truss mechanism is used to control the loading and unloading device for the outer ring processing of the bearing as a whole and the outer ring of the bearing after grinding to move to the unloading position of the grinding truss loading and unloading gravity bin for unloading. The unloading position is the highest position of the inclined slide. During the downward movement of the lower clamp controlled by the cylinder, the lower end of the outer ring of the bearing first contacts the inclined slide. As the lower clamp descends, the outer ring of the bearing rolls obliquely downward along the inclined slide under the action of gravity until the lower clamp finishes descending. At this time, the relative position of the annular rib on the inner side of the outer ring of the bearing and the arc surface of the cam block of the lower clamp is inward. The truss mechanism then controls the overall movement of the loading and unloading device for the outer ring processing of the bearing to enable the cam block to be pulled out of the outer ring of the bearing, and the unloading is completed.

[0016] Before the loading and unloading device for processing the outer ring of the bearing is used, the cam block needs to be debugged when it is installed. The loading and unloading device for processing the outer ring of the bearing is located at the unloading position of the outer ring of the bearing. The cylinder is in a fully extended and open state during unloading. The lower clamp is manually held to make the cam block hook a bearing outer ring and place it on the inclined slide for unloading. The round rod end of the lower clamp is inserted into the fixed hole at the telescopic end of the cylinder. The cam block is rotated and adjusted so that its arc surface forms an internal cut with the annular rib of the outer ring of the bearing to ensure that after the cylinder is fully extended and opened, the cam block can be pulled out from the inner side of the outer ring of the bearing for unloading.

[0017] The advantage of the present invention is that a cam block is designed at one end of the round rod. The design of the cam block meets the requirements of clamping the outer ring of a large-sized double-rib straight raceway bearing. The highest point of the cam block is against the middle of the inner side of the outer ring of the bearing. The outer ring of the bearing will not tilt during the hooking process. Finally, when clamped with the upper clamping jaw, the outer ring of the bearing will not be skewed or have other problems, thereby meeting the subsequent processing requirements of the grinder. Due to the design of the cam block, the original gravity rolling feeding method cannot be met. The arc surface design and installation position of the cam block ensure that the front end of the round rod can be effectively fed even if it is tilted, and the cam block will not interfere with the annular baffle of the outer ring of the bearing during feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the present invention.

[0019] Figure 2It is a schematic diagram of a loading and unloading device for processing a bearing outer ring of the present invention clamping a bearing outer ring.

[0020] Figure 3 It is a schematic diagram of the loading and unloading device for machining the outer ring of a bearing of the present invention when unloading at the unloading position.

[0021] Figure 4 It is a schematic diagram of the lower clamping jaw of the present invention.

[0022] Figure 5 It is a side sectional schematic diagram of the lower clamping jaw of the present invention.

[0023] Figure 6 It is a cross-sectional view of the outer ring of the double-rib straight raceway bearing of the present invention. DETAILED DESCRIPTION

[0024] See attached Figure 1-6 A loading and unloading device 10 for processing the outer ring of a bearing comprises a cylinder 1, an upper clamping jaw 2 and a lower clamping jaw 3. The telescopic end of the cylinder 1 is downwardly mounted on the lower end of the telescopic cantilever of the truss mechanism 4, and the lower clamping jaw 3 is mounted on the telescopic end below the cylinder 1. The upper clamping jaw 2 is mounted near one side below the cylinder 1, and the lower clamping jaw 3 comprises a round rod 31 and a cam block 32. One end of the round rod 31 is horizontally mounted on one side of the telescopic end of the cylinder 1, and the other end of the round rod 31 is mounted on the cam block 32. The arc degree of the upward arc surface 33 of the cam block 32 is less than or equal to the arc degree of the inner diameter of the bearing outer ring 5. The outer side of the round rod 31 is tangent to the inner side of the arc surface 33 of the cam block 32. When the lower clamping jaw 3 is installed, one end of the arc surface 33 of the cam block 32 is tilted upward at a certain angle; the upper clamping jaw 2 is designed to be plate-shaped.

[0025] Figure 6 The bearing outer ring 5 is a double-rib straight raceway bearing outer ring, that is, an annular rib 51 is designed at each of the two ends of the inner side of the outer ring, and a straight raceway 52 is formed between the two annular ribs 51.

[0026] When the upper clamping jaw 2 and the lower clamping jaw 3 are in a state of clamping the bearing outer ring 5, the raised end of the arc surface 33 of the cam block 32 of the lower clamping jaw 3 extends into the bearing outer ring 5 and presses against the middle position of the inner straight raceway of the bearing outer ring 5, and the arc surface 21 of the upper clamping jaw 2 is pressed against the upper outer side of the bearing outer ring 5.

[0027] The thickness of the cam block 32 is less than or equal to the width of the straight raceway 52 .

[0028] The upper jaw 2 is installed below the cylinder 1 and the lower middle portion is designed as an arc surface 21 . The highest point of the arc surface 21 is located above the highest point of the cam block 32 .

[0029] A method for loading and unloading a bearing outer ring using the loading and unloading device for processing a bearing outer ring is disclosed.

[0030] First, the bearing outer ring 5 is placed at the loading position 6 of the grinding truss loading and unloading gravity bin, and the truss mechanism 4 drives the loading and unloading device used for bearing outer ring processing to the loading position 6 for grabbing.

[0031] The cylinder 1 controls the lower clamping jaw 3 to move downward, and the truss mechanism 4 controls the loading and unloading device 10 for bearing outer ring processing to move as a whole, so that the cam block 32 of the lower clamping jaw 3 extends into the middle position of the bearing outer ring 5, and the cylinder 1 begins to contract, and the upper end of the cam block 32 presses against the middle position of the inner side of the bearing outer ring, and the bearing outer ring 5 is lifted horizontally until the arc surface 21 of the upper clamping jaw 2 is pressed against the outer side of the bearing outer ring 5, completing the clamping.

[0032] The truss mechanism 4 is then used to control the loading and unloading device 10 for processing the bearing outer ring as a whole and the clamped bearing outer ring 5 to move to the electromagnetic clamp 7 position in the center of the grinder 8. The electromagnetic clamp 7 is energized to adsorb the bearing outer ring 5. The cylinder 1 controls the lower clamp 3 to move downward to release the bearing outer ring 5 until the highest point of the cam block 32 is lower than the inner annular rib of the bearing outer ring 5. The truss mechanism 4 then controls the loading and unloading device 10 for processing the bearing outer ring to move as a whole, so that the cam block 32 is pulled out from the inner side of the bearing outer ring 5. The cylinder 1 contracts to control the lower clamp 3 to move upward, waiting for the grinder 8 to complete the grinding of the bearing outer ring 5 through the grinding wheel mechanism 11, and then repeat the above clamping action. After clamping, the electromagnetic clamp 7 is powered off to release the bearing outer ring 5.

[0033] Finally, the truss mechanism 4 controls the loading and unloading device 10 for processing the bearing outer ring as a whole and the grinding bearing outer ring 5 to move to the unloading position 9 of the grinding truss loading and unloading gravity bin for unloading. The unloading position 9 is the highest position of the inclined slide. During the downward movement of the lower clamp 3 controlled by the cylinder 1, the lower end of the bearing outer ring 5 first contacts the inclined slide. As the lower clamp 3 descends, the bearing outer ring 5 rolls obliquely downward along the inclined slide under the action of gravity until the lower clamp 3 finishes descending. At this time, the annular rib 51 on the inner side of the bearing outer ring 5 and the arc surface of the cam block 32 of the lower clamp 3 are inscribed relative to each other. The truss mechanism 4 controls the loading and unloading device for processing the bearing outer ring as a whole to move so that the cam block 32 can be pulled out of the bearing outer ring 5, and the unloading is completed.

[0034] Before the loading and unloading device for processing the outer ring of the bearing is used, the cam block 32 needs to be debugged when it is installed. The loading and unloading device for processing the outer ring of the bearing is located at the unloading position 9 of the outer ring of the bearing 5. The cylinder 1 is in a fully extended and open state during unloading. The lower clamp 3 is manually held to make the cam block 32 hook a bearing outer ring 5 and place it on the inclined slide for unloading. The end of the round rod 31 of the lower clamp 3 is inserted into the fixed hole at the telescopic end of the cylinder 1. The cam block 32 is rotated and adjusted so that its arc surface 33 forms an inner cut with the annular rib 51 of the outer ring of the bearing 5. Ensure that after the cylinder 1 is fully extended and opened, the cam block 32 can be pulled out from the inner side of the outer ring of the bearing 5 for unloading.

[0035] The cam block of the present invention and the lower clamping jaw formed by the round rod are integrally formed. The round rod is first processed, a cylindrical cam block is processed at the other end of the round rod, and then an arc surface on one side of the cam block is processed. The arc surface is tangent to the outer circle of the round rod. The arc degree of the arc surface is required to be smaller than the arc degree of the inner circle of the annular rib of the outer ring of the bearing. The other side of the cam block can be retained. This processing method is the most convenient, and the redundant corners of the cam block can also be ground off.

[0036] The cam block 32 of the present invention is designed to solve the problem of the outer ring of a large-sized double-rib straight raceway bearing being tilted by grabbing it with a truss. Although the cam block design solves the grabbing problem at the front, it creates a problem of unloading at the back. The cam block is added to the front end of the round rod to press against the middle of the outer ring of the bearing to ensure that the outer ring of the bearing does not tilt. Figure 2 , and the round rod does not need to be lengthened to meet the position space requirements between the electromagnetic clamp and the grinding wheel mechanism on the grinder, and to perform normal loading and unloading operations on the grinder.

[0037] However, the cam block must be hooked on the inner side of the annular rib, and the unloading design is inclined. In the past, after the bearing outer ring was unloaded, the clamping jaws released the bearing outer ring, and the round rod could be pulled out from the inner side of the bearing outer ring, and the bearing outer ring would automatically roll to the unloading position, making it easy for the staff to take it. However, due to the design of the cam block, the clamping jaws release the bearing outer ring, and the bearing outer ring will roll down under the action of gravity, and the annular rib will always be stuck on the inside of the cam block, making it impossible to smoothly pull the cam block out from the inner side of the bearing outer ring. It is necessary to ensure that the bearing outer ring does not roll down automatically, so that the cam block and the annular rib do not interfere with each other and are separated from each other. The cam block can be pulled out axially from the bearing outer ring, but the unloading device design That is, it does not need external force to hold, and can automatically roll down under the action of gravity. This is a major advantage. It is impossible to change the structure, but if the design of the cam block is not changed, difficulties will be encountered. In the present invention, the structure of the cam block is designed, the curvature of the upward arc surface is less than or equal to the inner curvature of the annular baffle, the outer circle of the round rod is also tangent to the arc surface, and the lower clamp is debugged during installation. One end of the cam block is tilted for hooking, and the support point of the hook is eccentric to the center of the round rod. When the clamp releases the outer ring of the bearing, the outer ring of the bearing automatically rolls down at the unloading position. At this time, the state requires that the arc surface of the cam block is tangent to the inner circle of the annular baffle, such as Figure 3 At this time, when the cam block is pulled out from the inner side of the bearing outer ring, it will not interfere with the annular baffle and can be easily pulled out, thus solving the above technical difficulties and retaining the inclined feeding structure.

Claims

1. A loading and unloading device for processing bearing outer rings, characterized in that: It comprises a cylinder, an upper clamp and a lower clamp. The telescopic end of the cylinder is downwardly mounted on the lower end of the telescopic cantilever of the truss mechanism, the lower clamp is mounted on the telescopic end below the cylinder, and the upper clamp is mounted near one side below the cylinder. The lower clamp comprises a round rod and a cam block. One end of the round rod is horizontally mounted on one side of the telescopic end of the cylinder, and the other end of the round rod is mounted on the cam block. The arc of the upward arc surface of the cam block is less than or equal to the arc of the inner diameter of the outer ring of the bearing, and the outer side of the round rod is tangent to the inner side of the arc surface of the cam block. When the lower clamp is installed, one end of the arc surface of the cam block is tilted upward at a certain angle. The upper clamp is designed to be plate-shaped. The outer ring of the bearing is a double-rib straight raceway outer ring, that is, an annular rib is designed at both ends of the inner side of the outer ring, and a straight raceway is formed between the two annular ribs; when the upper and lower jaws clamp the outer ring of the bearing, the raised end of the arc surface of the cam block of the lower jaw extends into the inner side of the outer ring of the bearing and presses against the middle position of the inner straight raceway of the outer ring of the bearing, and the arc surface of the upper jaw is pressed on the upper outer side of the outer ring of the bearing; the thickness of the cam block is less than or equal to the width of the straight raceway; the upper jaw is installed under the cylinder and the lower middle part is designed as an arc surface, and the highest point of the arc surface is located above the highest point of the cam block.

2. A loading and unloading device for processing a bearing outer ring according to claim 1, characterized in that: A method for loading and unloading a bearing outer ring using the loading and unloading device for processing a bearing outer ring, First, place the outer ring of the bearing on the loading position of the grinding truss loading and unloading gravity bin, and the truss mechanism drives the loading and unloading device used for the processing of the outer ring of the bearing to the loading position for grabbing; The cylinder controls the lower clamp to move downward, and the truss mechanism controls the overall movement of the loading and unloading device used for bearing outer ring processing, so that the cam block of the lower clamp extends into the middle position of the bearing outer ring. The cylinder begins to contract, and the upper end of the cam block presses against the middle position of the inner side of the bearing outer ring, lifting the bearing outer ring horizontally until the arc surface of the upper clamp is pressed against the outer side of the bearing outer ring, completing the clamping. The truss mechanism is then used to control the loading and unloading device for the outer ring processing of the bearing as a whole and the clamped outer ring of the bearing to move to the electromagnetic clamp position in the center of the grinder. The electromagnetic clamp is energized to adsorb the outer ring of the bearing. The cylinder controls the lower clamp to move downward to release the outer ring of the bearing until the highest point of the cam block is lower than the inner rib of the outer ring of the bearing. The truss mechanism then controls the loading and unloading device for the outer ring processing of the bearing as a whole to pull the cam block out of the outer ring of the bearing. The cylinder contracts to control the lower clamp to move upward, waiting for the grinder to complete the grinding of the outer ring of the bearing, and then repeat the above clamping action. After clamping, the electromagnetic clamp is powered off to release the outer ring of the bearing. Finally, the truss mechanism is used to control the loading and unloading device for the outer ring processing of the bearing as a whole and the outer ring of the bearing after grinding to move to the unloading position of the grinding truss loading and unloading gravity bin for unloading. The unloading position is the highest position of the inclined slide. During the downward movement of the lower clamp controlled by the cylinder, the lower end of the outer ring of the bearing first contacts the inclined slide. As the lower clamp descends, the outer ring of the bearing rolls obliquely downward along the inclined slide under the action of gravity until the lower clamp finishes descending. At this time, the relative position of the annular rib on the inner side of the outer ring of the bearing and the arc surface of the cam block of the lower clamp is inward. The truss mechanism then controls the overall movement of the loading and unloading device for the outer ring processing of the bearing to enable the cam block to be pulled out of the outer ring of the bearing, and the unloading is completed.

3. A loading and unloading device for processing a bearing outer ring according to claim 2, characterized in that: Before the loading and unloading device for processing the outer ring of the bearing is used, the cam block needs to be debugged when it is installed. The loading and unloading device for processing the outer ring of the bearing is located at the unloading position of the outer ring of the bearing. The cylinder is in a fully extended and open state during unloading. The lower clamp is manually held to make the cam block hook a bearing outer ring and place it on the inclined slide for unloading. The round rod end of the lower clamp is inserted into the fixed hole at the telescopic end of the cylinder. The cam block is rotated and adjusted so that its arc surface forms an internal cut with the annular rib of the outer ring of the bearing to ensure that after the cylinder is fully extended and opened, the cam block can be pulled out from the inner side of the outer ring of the bearing for unloading.

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