A feeding device for mechanical component machining

Abstract

The application relates to a mechanical hand technical field, in particular to a feeding device for mechanical part machining, which comprises a mechanical hand, a deep groove ball bearing is arranged on the mechanical hand, the deep groove ball bearing comprises a bearing inner ring, rollers and a bearing outer ring, a retainer is arranged between the bearing inner ring and the bearing outer ring, the retainer is provided with a plurality of limiting rings, the limiting rings are used for mounting the rollers, the plurality of limiting rings are uniformly distributed around the axis of the bearing inner ring, the axis of each limiting ring is perpendicular to the axis of the bearing inner ring, and a guide plate is arranged between the adjacent two limiting rings; the axis direction of the bearing inner ring is set as a left-right direction, the inclination directions of the plurality of guide plates are consistent and each has a certain angle with the axis of the bearing inner ring, when the retainer rotates around the axis of the bearing inner ring, the plurality of guide plates can guide the lubricating liquid in the deep groove ball bearing to flow in the left-right direction, the lubricating effect of the rollers and the limiting rings is enhanced, and the wear degree of the rollers and the limiting rings is reduced.

Description

Technical Field

[0001] This invention relates to the field of robotic arm technology, and in particular to a feeding device for machining mechanical parts. Background Technology

[0002] A robotic arm is an automated operating device that can mimic certain movements and functions of a human hand and arm to grasp, move objects, or operate tools according to a fixed program.

[0003] Deep groove ball bearings are typically used at the joints of robotic arms. However, due to the frequent reciprocating movement of the robotic arm during the processing and loading of parts, the rollers and cages of the deep groove ball bearings on the robotic arm wear down, making the deep groove ball bearings prone to damage and thus affecting the processing and loading efficiency of the robotic arm. Summary of the Invention

[0004] Therefore, it is necessary to provide a feeding device for machining mechanical parts to address the technical problem of easy damage to deep groove ball bearings in current robotic arms.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A feeding device for machining mechanical parts includes a robotic arm with a deep groove ball bearing. The deep groove ball bearing includes an inner ring, rollers, and an outer ring. A cage is provided between the inner and outer rings. The cage has multiple limiting rings for mounting the rollers. The multiple limiting rings are evenly distributed around the axis of the inner ring, and the axis of each limiting ring is perpendicular to the axis of the inner ring. A guide plate is provided between two adjacent limiting rings. The axis of the inner ring is set to the left-right direction. The multiple guide plates are tilted in the same direction and each has a certain angle with the axis of the inner ring. The left and right sides of the guide plates are equidistant from the axis of the inner ring. When the cage rotates around the axis of the inner ring, the multiple guide plates can guide the lubricant inside the deep groove ball bearing to flow obliquely in the left-right direction.

[0007] Furthermore, the cage includes a left cage and a right cage, which are detachably connected.

[0008] Furthermore, the left retainer includes multiple left limiting parts, each of which is semi-circular, and adjacent left limiting parts are connected by a left connecting plate. The right retainer includes multiple right limiting parts, each of which is semi-circular, and adjacent right limiting parts are connected by a right connecting plate. The left and right limiting parts are joined together to form the limiting ring, and the left and right connecting plates are connected by rivets.

[0009] Furthermore, the left connecting plate is provided with a left guide plate, which is connected to two adjacent left limiting parts. The right connecting plate is provided with a right guide plate, which is connected to two adjacent right limiting parts. The left guide plate and the right guide plate are mated to form the guide plate. The left guide plate and the right guide plate have the same shape, and the mating left guide plate and the right guide plate are symmetrical about the diameter center of the inner ring of the bearing.

[0010] Furthermore, both the left and right guide plates are provided with partition plates. The length direction of the partition plates is consistent with the inclination direction of the guide plates and is along the radial direction of the inner ring of the bearing. The partition plates are perpendicular to the guide plates.

[0011] Furthermore, both the left and right guide plates have two partitions, which are distributed left and right, with one partition located in the middle of the guide plate and the other partition located at the edge of the guide plate.

[0012] Furthermore, the length of the partition located in the middle of the guide plate is shorter than the length of the partition located at the edge of the guide plate.

[0013] Furthermore, two bearing end caps are provided between the inner ring and the outer ring of the bearing, with the two bearing end caps distributed on the left and right, and the cage located between the two bearing end caps.

[0014] Furthermore, the robotic arm also includes a base, on which a first rotating arm, a second rotating arm, a third rotating arm, a fourth rotating arm, a fifth rotating arm, and a sixth rotating arm are sequentially mounted, with adjacent rotating arms being rotatably connected.

[0015] Furthermore, the sixth rotating arm is equipped with grippers, which are used to grip mechanical parts.

[0016] The beneficial effects of this invention are:

[0017] The feeding device for machining mechanical parts provided by the present invention has multiple guide plates on the cage of a deep groove ball bearing. When the cage rotates around the axis of the inner ring of the bearing, the multiple guide plates can guide the lubricant inside the deep groove ball bearing to flow obliquely in the left and right direction, thereby enhancing the lubrication effect between the rollers and the retaining ring and reducing the wear of the rollers and the retaining ring.

[0018] Secondly, the lubricant flowing at an angle along the guide plate applies a torque to the roller, which causes the roller to rotate, thereby changing the contact position between the roller and the limiting ring. This prevents a certain position of the roller from rubbing against the limiting ring for a long time, thus extending the service life of the roller.

[0019] Third, the lubricant flows left and right under the guidance of the guide plate, which will have a certain impact on the inner side of the two bearing end caps, promote the exchange flow of lubricant between the two bearing end caps, reduce the wall flow phenomenon on the bearing end caps, promote the full flow of lubricant, and improve the lubrication effect of deep groove ball bearings. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a feeding device for machining mechanical parts according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of a deep groove ball bearing in a feeding device for machining mechanical parts according to an embodiment of the present invention;

[0022] Figure 3 This is an exploded view of a deep groove ball bearing in a feeding device for machining mechanical parts according to an embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional schematic diagram of a deep groove ball bearing in a feeding device for machining mechanical parts according to an embodiment of the present invention;

[0024] Figure 5 This is a partial structural diagram of a deep groove ball bearing in a feeding device for machining mechanical parts according to an embodiment of the present invention;

[0025] Figure 6 for Figure 5 Enlarged view of the structure at point A in the middle;

[0026] Figure 7 This is a schematic diagram of the cage structure of a deep groove ball bearing in a feeding device for machining mechanical parts according to an embodiment of the present invention.

[0027] in:

[0028] 100. Base; 210. First rotating arm; 220. Second rotating arm; 230. Third rotating arm; 240. Fourth rotating arm; 250. Fifth rotating arm; 260. Sixth rotating arm; 270. Gripper; 300. Deep groove ball bearing; 310. Bearing outer ring; 320. Bearing inner ring; 330. Bearing end cap; 340. Roller; 350. Cage; 351. Left limiting part; 3511. Partition plate; 3512. Left guide plate; 3513. Left connecting plate; 352. Right limiting part; 353. Rivet. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0030] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] like Figures 1 to 7 As shown in the figure, an embodiment of the present invention provides a feeding device for machining mechanical parts, including a robot arm. The robot arm is equipped with a deep groove ball bearing 300. The deep groove ball bearing 300 includes an inner ring 320, rollers 340, and an outer ring 310. A cage 350 is provided between the inner ring 320 and the outer ring 310. The cage 350 has multiple limiting rings, which are used to mount the rollers 340. The multiple limiting rings are evenly distributed around the axis of the inner ring 320, and the axis of each limiting ring is perpendicular to the inner ring 320. A guide plate is provided between two adjacent limiting rings along the axis of the inner ring 320 of the bearing. The axis of the inner ring 320 is set to the left-right direction. Multiple guide plates are tilted in the same direction and each has a certain angle with the axis of the inner ring 320, which is less than 90 degrees. This causes the guide plates to tilt in the left-right direction. The distance between the left and right sides of the guide plates and the axis of the inner ring 320 is the same. When the cage 350 rotates around the axis of the inner ring 320, the multiple guide plates can guide the lubricant inside the deep groove ball bearing 300 to flow obliquely in the left-right direction. Both the outer circumferential surface of the inner ring 320 and the inner circumferential surface of the outer ring 310 are provided with annular grooves, and the rollers 340 slide around these grooves.

[0033] The bearing inner ring 320 is set to rotate in the front-back direction, and the guide plate connects the rearmost end of the front limiting ring and the frontmost end of the rear limiting ring.

[0034] In one embodiment, the cage 350 includes a left cage and a right cage, which are detachably connected. This detachable connection facilitates the assembly of the roller 340.

[0035] In one embodiment, the left retainer includes a plurality of left limiting portions 351, each of which is semi-circular. Adjacent left limiting portions 351 are connected by a left connecting plate 3513. The right retainer includes a plurality of right limiting portions 352, each of which is semi-circular. Adjacent right limiting portions 352 are connected by a right connecting plate. The left limiting portions 351 and the right limiting portions 352 are joined together to form the limiting ring. The left connecting plate 3513 and the right connecting plate are connected by rivets 353.

[0036] In one embodiment, the left connecting plate 3513 is provided with a left guide plate 3512, which is connected to two adjacent left limiting parts 351. The right connecting plate is provided with a right guide plate, which is connected to two adjacent right limiting parts 352. The left guide plate 3512 and the right guide plate are mated to form the guide plate. The left guide plate 3512 and the right guide plate have the same shape, and the mating left guide plate 3512 and the right guide plate are symmetrical about the diameter center of the bearing inner ring 320.

[0037] In one embodiment, both the left guide plate 3512 and the right guide plate are provided with a partition plate 3511. The length direction of the partition plate 3511 is consistent with the inclination direction of the guide plate and is along the radial direction of the inner ring 320 of the bearing. The partition plate 3511 is perpendicular to the guide plate.

[0038] In one embodiment, two partition plates 3511 are provided on both the left guide plate 3512 and the right guide plate. The two partition plates 3511 are distributed on the left and right sides, with one partition plate 3511 located in the middle of the guide plate and the other partition plate 3511 located at the edge of the guide plate.

[0039] In one embodiment, the length of the partition plate 3511 located in the middle of the guide plate is less than the length of the partition plate 3511 located at the edge of the guide plate. This arrangement makes it easier for the lubricant to flow.

[0040] In one embodiment, two bearing end caps 330 are provided between the inner ring 320 and the outer ring 310 of the bearing, with the two bearing end caps 330 distributed on the left and right sides, and the cage 350 located between the two bearing end caps 330. The bearing end caps 330 can prevent lubricant leakage, so that the deep groove ball bearing 300 does not require the addition of lubricant during use.

[0041] In one embodiment, the robotic arm further includes a base 100, on which a first rotating arm 210, a second rotating arm 220, a third rotating arm 230, a fourth rotating arm 240, a fifth rotating arm 250 and a sixth rotating arm 260 are sequentially arranged, with adjacent rotating arms being rotatably connected.

[0042] In one embodiment, the sixth rotating arm 260 is provided with a gripper 270, which is used to grip mechanical parts.

[0043] Based on the above embodiments, the usage principle and working process of the embodiments of the present invention are as follows:

[0044] The robotic arm is activated, controlling the rotation of the first rotating arm 210, second rotating arm 220, third rotating arm 230, fourth rotating arm 240, fifth rotating arm 250, and sixth rotating arm 260. This causes the gripper 270 on the sixth rotating arm 260 to clamp the mechanical parts for loading and processing. The deep groove ball bearing 300 on the robotic arm will rotate, the inner ring 320 of the bearing will drive the roller 340 to rotate, and the rotation of the roller 340 will drive the cage 350 to rotate.

[0045] Taking the inner ring 320 of the bearing rotating in the positive direction around its own axis as an example, Figure 5 Viewed from left to right, the inner ring 320 of the bearing rotates clockwise. At the same time, the cage 350 and the roller 340 also rotate clockwise synchronously. Figure 6 In the middle, the positions of the limiting ring a and the limiting ring b can be understood as the front end and the rear end of the limiting ring rotation direction.

[0046] When the robotic arm stops and starts suddenly, such as Figure 5 and Figure 6 As shown, instantaneous acceleration and deceleration will cause a large impact between roller 340 and the limiting ring a. Because the guide plate can guide the lubricant inside the deep groove ball bearing 300 to flow obliquely in the left-right direction, and the guide plate is connected to the two adjacent limiting rings, the lubricant can be guided to the limiting ring a position. Figure 6 The arrows in the diagram indicate the direction of lubricant flow, which enhances the lubrication effect between roller 340 and the limiting ring a, and reduces the wear between roller 340 and the limiting ring a.

[0047] Secondly, because the roller 340 rolls around the rolling shaft c within the bearing, the wear degree of the part near the rolling shaft c and the part away from the rolling shaft c is inconsistent, resulting in uneven wear of the roller 340 and thus affecting its service life. However, the lubricating fluid flowing obliquely along the guide plate applies a torque to the roller 340. The axis of this torque is perpendicular to the rolling shaft c and along the radial direction of the inner ring 320 of the bearing. This torque causes the roller 340 to rotate, thereby changing the contact position between the roller 340 and the limiting ring a, preventing prolonged frictional wear at a certain position of the roller 340 with the limiting ring a, and thus extending the service life of the roller 340.

[0048] Third, in existing deep groove ball bearings 300, the lubricant inside is usually squeezed to the position near the bearing end cap 330 as the rollers 340 roll. Because the moving speeds of the bearing end cap 330 and the rollers 340 are inconsistent, this leads to wall flow of the lubricant, reducing its circulation and fluidity. In this invention, by providing a guide plate on the cage 350, the lubricant in the deep groove ball bearing 300 flows left and right under the guidance of the guide plate. This creates a certain impact on the inner surfaces of the two bearing end caps 330, promoting the exchange of lubricant between the two end caps 330, reducing wall flow on the bearing end caps 330, promoting sufficient lubricant flow, and improving the lubrication effect of the deep groove ball bearing 300.

[0049] When the inner ring 320 of the bearing rotates in the opposite direction around its own axis Figure 5 Viewed from left to right, the inner ring 320 of the bearing rotates counterclockwise. At the same time, the cage 350 and the roller 340 also rotate counterclockwise synchronously. The guide plate guides the lubricant on the right side of the cage 350 to the position of the limiting ring b. At this time, the lubricant can reduce the wear between the roller 340 and the position of the limiting ring b.

[0050] Finally, stop the robotic arm once the material loading is complete.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A feeding device for machining of mechanical parts, characterized in that The mechanical hand is provided with a deep groove ball bearing, the deep groove ball bearing comprises a bearing inner ring, a roller and a bearing outer ring, a retainer is arranged between the bearing inner ring and the bearing outer ring, the retainer is provided with a plurality of limiting rings for mounting the roller, the plurality of limiting rings are uniformly distributed around the axis of the bearing inner ring, and the axis of each limiting ring is perpendicular to the axis of the bearing inner ring, and a guide plate is arranged between adjacent two limiting rings; the axis direction of the bearing inner ring is set as a left-right direction, the inclination directions of the plurality of guide plates are consistent and each has a certain angle with the axis of the bearing inner ring, the distances from the left and right sides of the guide plate to the axis of the bearing inner ring are consistent, when the retainer rotates around the axis of the bearing inner ring, the plurality of guide plates can guide the lubricating liquid in the deep groove ball bearing to flow in the left-right direction, the retainer comprises a left retainer and a right retainer, the left retainer and the right retainer are detachably connected, the left retainer comprises a plurality of left limiting parts, the left limiting parts are semicircular, adjacent two left limiting parts are connected through a left connecting plate, the right retainer comprises a plurality of right limiting parts, the right limiting parts are semicircular, adjacent two right limiting parts are connected through a right connecting plate, the left limiting part and the right limiting part are left-right butted to form the limiting ring, the left connecting plate and the right connecting plate are connected through a rivet, the left connecting plate is provided with a left guide plate, the left guide plate is connected with adjacent two left limiting parts, the right connecting plate is provided with a right guide plate, the right guide plate is connected with adjacent two right limiting parts, the left guide plate and the right guide plate are butted to form the guide plate; the left guide plate and the right guide plate are the same in shape, and the left guide plate and the right guide plate that are butted with each other are symmetrical around the diameter center of the bearing inner ring, the left guide plate and the right guide plate are both provided with a partition plate, the length direction of the partition plate is consistent with the inclination direction of the guide plate, and the partition plate is along the radial direction of the bearing inner ring, the partition plate is perpendicular to the guide plate, the left guide plate and the right guide plate are both provided with two partition plates, the two partition plates are left-right distributed, one of the two partition plates is located at the middle position of the guide plate, and the other partition plate is located at the edge position of the guide plate, the length of the partition plate located at the middle position of the guide plate is smaller than the length of the partition plate located at the edge position of the guide plate.

2. The feeding device for machining of mechanical parts according to claim 1, characterized in that, Two bearing end covers are further arranged between the bearing inner ring and the bearing outer ring, the two bearing end covers are left-right distributed, and the retainer is located between the two bearing end covers.

3. The feeding device for mechanical parts machining according to claim 1, characterized in that, The mechanical hand further comprises a base, the base is sequentially provided with a first rotating arm, a second rotating arm, a third rotating arm, a fourth rotating arm, a fifth rotating arm and a sixth rotating arm, and adjacent two rotating arms are rotationally connected.

4. The feeding device for machining mechanical parts according to claim 3, characterized in that, The sixth rotating arm is provided with a clamping jaw, and the clamping jaw is used for clamping mechanical parts.

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