Milling equipment and production process for bearing production

Abstract

The present invention belongs to the technical field of milling machine tool processing, and specifically provides a milling device for bearing production and a production process thereof, wherein the milling device for bearing production includes: a material box, suitable for stacking steel pipes; a buffered feeding assembly, which is arranged in the material box and suitable for buffering the steel pipes placed in the material box; a sequential material taking assembly, which is arranged at the discharge port of the material box and suitable for sequentially taking out the steel pipes in the material box; two groups of milling assemblies, which are respectively arranged on both sides of the sequential material taking assembly and suitable for milling the steel pipes taken out by the sequential material taking assembly. By arranging a buffered feeding assembly in the material box, the steel pipes entering the material box are buffered, the hard contact of the steel pipes is reduced, and the probability of damage to the steel pipes is reduced. At the same time, the posture of the steel pipes entering the material box is restricted by the buffered feeding assembly, thereby reducing the probability of the steel pipes getting stuck in the material box.

Description

Technical Field

[0001] The invention belongs to the technical field of milling machine tool processing, and specifically relates to the feeding and conveying of machine tools, and in particular to a milling device for bearing production and a production process thereof. Background Art

[0002] During the production process of the bearing sleeve, the inner wall of the sleeve needs to be milled to improve its surface finish and matching accuracy. At the same time, in order to improve the production efficiency of the sleeve, the steel pipe is directly milled. After the milling is completed, the steel pipe is cut and divided into multiple sleeves to complete the production of the sleeve.

[0003] In order to reduce the overall cost of the milling machine tools in the related technology, the steel pipes are generally placed into the material box manually. When the materials are placed manually, the steel pipes will fall freely into the material box. On the one hand, the steel pipes will be stuck at the discharge port of the material box. On the other hand, the steel pipes that freely fall into the material box will collide, causing damage to the surface of the steel pipes and affecting the service life of the subsequent bearings.

[0004] Therefore, how to avoid the steel pipe from getting stuck and surface damage during loading is an urgent problem to be solved.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0006] The embodiments of the present disclosure at least provide a milling device for bearing production and a production process thereof.

[0007] In a first aspect, an embodiment of the present disclosure provides a milling device for bearing production, comprising:

[0008] Material box, suitable for stacking steel pipes;

[0009] A buffer feed assembly, which is arranged in the material box and is suitable for buffering the steel pipe placed in the material box;

[0010] A sequential material taking component, which is arranged at the material outlet of the material box and is suitable for taking out the steel pipes in the material box sequentially;

[0011] Two groups of milling assemblies are respectively arranged on both sides of the sequential material taking assembly and are suitable for milling the steel pipes taken out by the sequential material taking assembly.

[0012] In an optional embodiment, the buffer feed assembly includes a first side plate, a second side plate and an L-shaped guide plate;

[0013] The first side plate and the second side plate are arranged opposite to each other;

[0014] The L-shaped guide plate is arranged between the first side plate and the second side plate;

[0015] The L-shaped guide plate includes a vertical plate and an inclined plate;

[0016] The vertical plate is spaced apart from the side wall of the material box away from the discharge port, and the inclined plate is spaced apart from the bottom wall of the material box, thereby forming an L-shaped feeding channel;

[0017] A plurality of elastic buffer columns are arranged on the side of the vertical plate facing the L-shaped feeding channel.

[0018] In an optional embodiment, the buffered feeding assembly further includes a lifting member;

[0019] The lifting member is arranged on the top of the first side plate and the second side plate, and is connected to the L-shaped guide plate;

[0020] When loading, the steel pipes enter the L-shaped feeding channel of the material box in turn, and push the L-shaped guide plate upward to make the lifting part rise, thereby stacking the steel pipes layer by layer in the material box; when unloading, the lifting part pushes the L-shaped guide plate downward to make the L-shaped guide plate squeeze the steel pipes in the material box, assisting the steel pipes to be unloaded from the discharge port of the material box.

[0021] In an optional embodiment, the lifting member includes: a lifting frame, a lifting block, a return spring and a connecting rod;

[0022] The lifting frame is arranged on the top of the first side plate and the second side plate;

[0023] The lifting frame is provided with a slide groove along the vertical direction;

[0024] The lifting block is slidably arranged in the sliding groove;

[0025] The return spring is arranged in the slide slot, and two ends of the return spring are respectively connected to the slide slot and the lifting block;

[0026] One end of the connecting rod is connected to the lifting block, and the other end is connected to the L-shaped guide plate.

[0027] In an optional embodiment, the lifting frame is provided with a ratchet bar;

[0028] The lifting block is provided with a ratchet pawl cooperating with the ratchet bar;

[0029] The ratchet pawl is rotatably arranged on the rotating shaft of the lifting block through a torsion spring;

[0030] The side wall of the pawl is provided with a clamping plate;

[0031] The lifting block is also provided with a hook plate;

[0032] The width of the triggering ratchet at the top of the ratchet strip is greater than the width of the remaining ratchet teeth;

[0033] When the pawl follows the lifting block to rise to the top of the ratchet bar, the pawl is triggered by the triggering ratchet and rotates until the clamping plate passes over the hook plate, so that the hook plate limits the clamping plate and releases the linkage between the pawl and the ratchet bar;

[0034] At the same time, the hook plate is provided with a trigger bar, and the lower part of the lifting frame is provided with a trigger column;

[0035] Before the pawl follows the lifting block to descend to the bottom of the ratchet bar, the trigger bar of the hook plate abuts against the trigger column, and the hook plate rotates to disengage from the limit position between the clamping plate of the pawl, and the pawl resumes the linkage with the ratchet bar under the action of the torsion spring.

[0036] In an optional embodiment, the hook plate is L-shaped and rotatably disposed on the lifting block;

[0037] The pawl is located on one side of the hook plate, and the hook of the hook plate is arranged toward the pawl;

[0038] The trigger bar is located on the other side of the hook plate.

[0039] In an optional embodiment, when the pawl is linked with the trigger ratchet of the ratchet bar, the rotation angle α of the pawl is in the range of 30-50°;

[0040] When the pawl is linked with the remaining ratchet teeth of the ratchet bar, the rotation angle β of the pawl is in the range of 20-40°, and α is greater than β.

[0041] In an optional embodiment, a first support plate and a second support plate are provided at the bottom of the lifting frame;

[0042] The lifting frame is fixedly arranged on the first supporting plate;

[0043] The first supporting plate and the second supporting plate are arranged opposite to each other and are arranged on the first side plate and the second side plate respectively;

[0044] A first plug-in rod extends from the first support plate in a horizontal direction;

[0045] A second plugging rod extends from the second supporting plate in a horizontal direction;

[0046] The second plug-in rod is inserted into the first plug-in rod.

[0047] In an optional embodiment, the buffered feeding assembly further includes a first adjusting screw and a second adjusting screw;

[0048] The first adjusting screw passes through the material box and is connected to a side wall of the first side plate facing away from the second side plate;

[0049] The second adjusting screw passes through the material box and is connected to the side wall of the second side plate facing away from the first side plate;

[0050] The first adjustment screw and the second adjustment screw are adapted to adjust a distance between the first side plate and the second side plate when rotated.

[0051] In a second aspect, the embodiments of the present disclosure further provide a sleeve production process, wherein the sleeve production process is suitable for using the above-mentioned milling equipment for bearing production to perform bearing sleeve production;

[0052] The sleeve production process comprises:

[0053] Put the steel pipe into the material box and use the buffer feeding assembly to cushion the fall of the steel pipe;

[0054] Wait until the steel pipes fill the material box;

[0055] The sequential material taking component sequentially takes out the steel pipes at the material box outlet;

[0056] The steel pipe is milled by the milling assembly.

[0057] The beneficial effect of the present invention is that the milling equipment for bearing production and the production process thereof provide a buffer feed assembly in the material box to buffer the steel pipe entering the material box, reduce the hard contact of the steel pipe, and reduce the probability of damage to the steel pipe. At the same time, the buffer feed assembly is used to restrict the posture of the steel pipe entering the material box, thereby reducing the probability of the steel pipe getting stuck in the material box.

[0058] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0059] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0061] Figure 1 A perspective view of a milling device for bearing production provided by an embodiment of the present disclosure;

[0062] Figure 2 A cross-sectional view of a milling device for bearing production provided by an embodiment of the present disclosure;

[0063] Figure 3 A schematic diagram of the structure of a material box and a buffered feeding assembly provided in an embodiment of the present disclosure;

[0064] Figure 4 A cross-sectional view of a material box and a buffered feed assembly provided in an embodiment of the present disclosure;

[0065] Figure 5 A partial structural schematic diagram of a buffered feeding assembly provided in an embodiment of the present disclosure;

[0066] FIG6 (a) is a schematic diagram of a rotation angle α when the pawl and the ratchet bar cooperate with each other according to an embodiment of the present disclosure;

[0067] FIG6( b ) is a schematic diagram of the rotation angle β when the pawl and the ratchet bar cooperate with each other according to an embodiment of the present disclosure.

[0068] In the figure: 100, material box; 110, material outlet; 200, buffer feed assembly; 210, first side plate; 220, second side plate; 230, L-shaped guide plate; 231, vertical plate; 2311, elastic buffer column; 232, inclined plate; 233, L-shaped feed channel; 240, lifting member; 241, lifting frame; 2411, slide groove; 2412, ratchet; 2412a, trigger ratchet; 2413, first support plate; 2414 , second support plate; 2415, first plug-in rod; 2416, second plug-in rod; 242, lifting block; 2421, pawl; 2422, rotating shaft; 2423, clamping plate; 2424, hook plate; 2424a, trigger bar; 2424b, trigger column; 243, return spring; 244, connecting rod; 260, first adjusting screw; 270, second adjusting screw; 300, sequential material taking assembly; 400, milling assembly; 500, steel pipe. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0070] Herein, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component, or a third component may be interposed between the first component and the second component.

[0071] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, in the drawings, the thickness of the components may be exaggerated or reduced in order to effectively describe the technical content.

[0072] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0073] See also Figure 1 and Figure 2 At least one embodiment provides a milling device for bearing production, including: a material box 100, suitable for stacking steel pipes 500; a buffer feed assembly 200, which is arranged in the material box 100 and is suitable for buffering the steel pipes 500 placed in the material box 100; a sequential material taking assembly 300, which is arranged at the discharge port 110 of the material box 100 and is suitable for sequentially taking out the steel pipes 500 in the material box 100; two groups of milling assemblies 400, which are respectively arranged on both sides of the sequential material taking assembly 300 and are suitable for milling the steel pipes 500 taken out by the sequential material taking assembly 300. By arranging the buffer feed assembly 200 in the material box 100, the steel pipes 500 entering the material box 100 are buffered, the hard contact of the steel pipes 500 is reduced, and the probability of damage to the steel pipes 500 is reduced. At the same time, the buffer feed assembly 200 restricts the posture of the steel pipe 500 entering the material box 100 , thereby reducing the probability of the steel pipe 500 getting stuck in the material box 100 .

[0074] See also Figure 3 and Figure 4In some embodiments, the buffer feed assembly 200 includes a first side plate 210, a second side plate 220 and an L-shaped guide plate 230; the first side plate 210 and the second side plate 220 are arranged opposite to each other; the L-shaped guide plate 230 is arranged between the first side plate 210 and the second side plate 220; the L-shaped guide plate 230 includes a vertical plate 231 and an inclined plate 232; the vertical plate 231 is spaced apart from the side wall of the material box 100 away from the discharge port 110, and the inclined plate 232 is spaced apart from the bottom wall of the material box 100, thereby forming an L-shaped feed channel 233; a plurality of elastic buffer columns 2311 are arranged on the side of the vertical plate 231 facing the L-shaped feed channel 233. The L-shaped guide plate 230 and the box body form an L-shaped feed channel 233, and when the steel pipe 500 slides into the box body, it rolls along the L-shaped feed channel 233, thereby preventing the steel pipe 500 from getting stuck.

[0075] It should be noted that the steel pipe 500 falls from the vertical part of the L-shaped feed channel 233 and impacts the elastic buffer column 2311 , which buffers the impact force of the steel pipe 500 when it falls, thereby reducing the probability of damage to the steel pipe 500 .

[0076] In a preferred embodiment, the bottom of the material box 100 is an inclined surface.

[0077] See also Figure 4 and Figure 5 In some embodiments, the buffer feed assembly 200 further includes a lifting member 240; the lifting member 240 is disposed on the top of the first side plate 210 and the second side plate 220 and is connected to the L-shaped guide plate 230; when feeding, the steel pipes 500 sequentially enter the L-shaped feed channel 233 of the material box 100, and push the L-shaped guide plate 230 upward to raise the lifting member 240, thereby stacking the steel pipes 500 layer by layer in the material box 100; when unloading, the lifting member 240 pushes the L-shaped guide plate 230 downward to squeeze the steel pipes 500 in the material box 100, and assists the steel pipes 500 to unload from the discharge port 110 of the material box 100. The steel pipes 500 in the material box 100 are stacked layer by layer by setting the lifting member 240.

[0078] The structure of the lifting member 240 is described below. The lifting member 240 includes: a lifting frame 241, a lifting block 242, a return spring 243 and a connecting rod 244; the lifting frame 241 is arranged on the top of the first side plate 210 and the second side plate 220; the lifting frame 241 is provided with a slide groove 2411 in the vertical direction; the lifting block 242 is slidably arranged in the slide groove 2411; the return spring 243 is arranged in the slide groove 2411, and the two ends of the return spring 243 are respectively connected to the slide groove 2411 and the lifting block 242; one end of the connecting rod 244 is connected to the lifting block 242, and the other end is connected to the L-shaped guide plate 230. By setting the return spring 243, the L-shaped guide plate 230 is squeezed to ensure the stability of the L-shaped feed channel 233, avoid the steel pipe 500 from getting stuck due to the large distance between the L-shaped guide plate 230 and the steel pipe 500, and reduce the probability of the steel pipe 500 getting stuck.

[0079] In some embodiments, the lifting frame 241 is provided with a ratchet 2412; the lifting block 242 is provided with a pawl 2421 that cooperates with the ratchet 2412; the pawl 2421 is rotatably arranged on the rotating shaft 2422 of the lifting block 242 through a torsion spring; the side wall of the pawl 2421 is provided with a clamping plate 2423; the lifting block 242 is also provided with a hook plate 2424; the width of the triggering ratchet 2412a at the top of the ratchet 2412 is greater than the width of the remaining ratchet teeth; when the pawl 2421 follows the lifting block 242 to rise to the top of the ratchet 2412, the pawl 2421 is triggered by the triggering ratchet 2412a, and the pawl 2421 rotates until the clamping plate 2423 passes over the hook Plate 2424, so that the hook plate 2424 limits the clamping plate 2423, and releases the linkage between the pawl 2421 and the ratchet bar 2412; at the same time, the hook plate 2424 is provided with a trigger bar 2424a, and the lower part of the lifting frame 241 is provided with a trigger column 2424b; before the pawl 2421 follows the lifting block 242 to descend to the bottom of the ratchet bar 2412, the trigger bar 2424a of the hook plate 2424 abuts against the trigger column 2424b, at this time, the lifting block 242 continues to descend, and the hook plate 2424 is rotated to be out of the limit between the clamping plate 2423 of the pawl 2421, and the pawl 2421 is restored to the linkage with the ratchet bar 2412 under the action of the torsion spring. After the steel pipes 500 fill a layer of the material box 100, the steel pipes 500 that continue to fall will push the L-shaped guide plate 230, causing the L-shaped guide plate 230 to move upward. By setting the ratchet bar 2412 and the ratchet 2421, the rising height of the L-shaped guide plate 230 is limited to avoid the distance between the L-shaped guide plate 230 and the steel pipes 500 being too large. At the same time, after the material box 100 is filled with steel pipes 500, the linkage between the pawl 2421 and the ratchet bar 2412 is released by triggering the ratchet 2412a. The reset spring 243 squeezes the L-shaped guide plate 230 in the process of restoring the deformation, thereby generating a downward squeezing force on the steel pipe 500 in the material box 100, and assisting the steel pipe 500 in discharging. When the L-shaped guide plate 230 drops to the limit position, the trigger bar 2424a of the hook plate 2424 abuts against the trigger column 2424b, and the hook plate 2424 is rotated to disengage from the limit between the card plate 2423 of the pawl 2421. Under the action of the torsion spring, the pawl 2421 restores the linkage with the ratchet bar 2412, thereby realizing the automatic switching of the separation and engagement states of the ratchet bar 2412 and the pawl 2421 without the use of external force.

[0080] In some embodiments, the hook plate 2424 is L-shaped and rotatably disposed on the lifting block 242; the pawl 2421 is located on one side of the hook plate 2424, and the pawl of the hook plate 2424 is disposed toward the pawl 2421; the trigger bar 2424a is located on the other side of the hook plate 2424.

[0081] In some embodiments, when the pawl 2421 is linked with the trigger ratchet 2412a of the ratchet bar 2412, the rotation angle α of the pawl 2421 is in the range of 30-50°, and the rotation angle α is shown in Figure 6 (a); when the pawl 2421 is linked with the remaining ratchet teeth of the ratchet bar 2412, the rotation angle β of the pawl 2421 is in the range of 20-40°, and α is greater than β, and the rotation angle β is shown in Figure 6 (b).

[0082] In some embodiments, a first support plate 2413 and a second support plate 2414 are provided at the bottom of the lifting frame 241; the lifting frame 241 is fixedly set on the first support plate 2413; the first support plate 2413 and the second support plate 2414 are arranged opposite to each other, and are respectively arranged on the first side plate 210 and the second side plate 220; the first support plate 2413 extends a first plug-in rod 2415 in a horizontal direction; the second support plate 2414 extends a second plug-in rod 2416 in a horizontal direction; the second plug-in rod 2416 is inserted into the first plug-in rod 2415.

[0083] In some embodiments, the buffer feed assembly 200 further includes a first adjusting screw 260 and a second adjusting screw 270; the first adjusting screw 260 passes through the material box 100 and is connected to the side wall of the first side plate 210 away from the second side plate 220; the second adjusting screw 270 passes through the material box 100 and is connected to the side wall of the second side plate 220 away from the first side plate 210; the first adjusting screw 260 and the second adjusting screw 270 are suitable for adjusting the distance between the first side plate 210 and the second side plate 220 when rotating. The distance between the first side plate 210 and the second side plate 220 is adjusted by the first adjusting screw 260 and the second adjusting screw 270, so that the buffer feed assembly 200 meets the feeding requirements of steel pipes 500 of different diameters.

[0084] At least one embodiment further provides a sleeve production process, which is suitable for using the above-mentioned milling equipment for bearing production to perform bearing sleeve production.

[0085] Specifically, the sleeve production process includes:

[0086] S110: Put the steel pipe 500 into the material box 100, and use the buffer feeding assembly 200 to buffer the fall of the steel pipe 500;

[0087] S120: Waiting for the steel pipe 500 to fill the material box 100;

[0088] S130: The sequential material taking component 300 sequentially takes out the steel pipes 500 at the material outlet 110 of the material box 100;

[0089] S140: Milling the steel pipe 500 by the milling assembly 400.

[0090] In summary, the present invention provides a milling device for bearing production and a production process thereof, wherein the milling device for bearing production comprises: a material box 100, suitable for stacking steel pipes 500; a buffer feed assembly 200, which is arranged in the material box 100 and is suitable for buffering the steel pipes 500 placed in the material box 100; a sequential material taking assembly 300, which is arranged at the discharge port 110 of the material box 100 and is suitable for sequentially taking out the steel pipes 500 in the material box 100; two groups of milling assemblies 400, which are respectively arranged on both sides of the sequential material taking assembly 300 and are suitable for milling the steel pipes 500 taken out by the sequential material taking assembly 300. By arranging the buffer feed assembly 200 in the material box 100, the steel pipes 500 entering the material box 100 are buffered, the hard contact of the steel pipes 500 is reduced, and the probability of damage to the steel pipes 500 is reduced. At the same time, the buffer feed assembly 200 restricts the posture of the steel pipe 500 entering the material box 100 , thereby reducing the probability of the steel pipe 500 getting stuck in the material box 100 .

[0091] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A milling equipment for bearing production, characterized in that: include: A material box (100) suitable for stacking steel pipes (500); A buffering feeding assembly (200), which is arranged in the material box (100) and is suitable for buffering the steel pipe (500) placed in the material box (100); A sequential material taking component (300), which is arranged at the material outlet (110) of the material box (100) and is suitable for sequentially taking out the steel pipes (500) in the material box (100); Two groups of milling assemblies (400) are respectively arranged on both sides of the sequential material taking assembly (300) and are suitable for milling the steel pipe (500) taken out by the sequential material taking assembly (300); The buffer-type feeding assembly (200) comprises a first side plate (210), a second side plate (220) and an L-shaped guide plate (230); The first side plate (210) and the second side plate (220) are arranged opposite to each other; The L-shaped guide plate (230) is arranged between the first side plate (210) and the second side plate (220); The L-shaped guide plate (230) comprises a vertical plate (231) and an inclined plate (232); The vertical plate (231) is spaced apart from a side wall of the material box (100) away from the material outlet (110), and the inclined plate (232) is spaced apart from a bottom wall of the material box (100), thereby forming an L-shaped feeding channel (233); A plurality of elastic buffer columns (2311) are arranged on the side of the vertical plate (231) facing the L-shaped feed channel (233); The buffered feeding assembly (200) further comprises a lifting member (240); The lifting member (240) is arranged on the top of the first side plate (210) and the second side plate (220), and is connected to the L-shaped guide plate (230); When loading, the steel pipes (500) sequentially enter the L-shaped feeding channel (233) of the material box (100), and push the L-shaped guide plate (230) upwards, so that the lifting member (240) rises, thereby stacking the steel pipes (500) layer by layer in the material box (100); when unloading, the lifting member (240) pushes the L-shaped guide plate (230) downwards, so that the L-shaped guide plate (230) squeezes the steel pipes (500) in the material box (100), and assists the steel pipes (500) to be unloaded from the discharge port (110) of the material box (100); The lifting member (240) comprises: a lifting frame (241), a lifting block (242), a return spring (243) and a connecting rod (244); The lifting frame (241) is arranged on the top of the first side plate (210) and the second side plate (220); The lifting frame (241) is provided with a sliding groove (2411) along the vertical direction; The lifting block (242) is slidably disposed in the sliding groove (2411); The return spring (243) is arranged in the slide groove (2411), and two ends of the return spring (243) are respectively connected to the slide groove (2411) and the lifting block (242); One end of the connecting rod (244) is connected to the lifting block (242), and the other end is connected to the L-shaped guide plate (230).

2. The milling equipment for bearing production according to claim 1, characterized in that: The lifting frame (241) is provided with a ratchet bar (2412); The lifting block (242) is provided with a ratchet claw (2421) that cooperates with the ratchet bar (2412); The ratchet pawl (2421) is rotatably arranged on the rotating shaft (2422) of the lifting block (242) via a torsion spring; A clamping plate (2423) is provided on the side wall of the ratchet (2421); The lifting block (242) is also provided with a hook plate (2424); The width of the trigger ratchet (2412a) at the top of the ratchet strip (2412) is greater than the width of the remaining ratchet teeth; When the pawl (2421) follows the lifting block (242) to rise to the top of the ratchet strip (2412), the pawl (2421) is triggered by the triggering ratchet (2412a) so that the pawl (2421) rotates until the clamping plate (2423) passes over the hook plate (2424), so that the hook plate (2424) limits the clamping plate (2423), thereby releasing the linkage between the pawl (2421) and the ratchet strip (2412); The hook plate (2424) is provided with a trigger bar (2424a), and the lower part of the lifting frame (241) is provided with a trigger column (2424b); Before the ratchet pawl (2421) follows the lifting block (242) to descend to the bottom of the ratchet strip (2412), the trigger strip (2424a) of the hook plate (2424) abuts against the trigger column (2424b), and the hook plate (2424) is rotated to disengage from the limit position between the clamping plate (2423) of the ratchet pawl (2421), and the ratchet pawl (2421) is restored to the linkage with the ratchet strip (2412) under the action of the torsion spring.

3. The milling equipment for bearing production according to claim 2, characterized in that: The hook plate (2424) is L-shaped and is rotatably disposed on the lifting block (242); The ratchet (2421) is located on one side of the hook plate (2424), and the hook of the hook plate (2424) is arranged toward the ratchet (2421); The trigger bar (2424a) is located on the other side of the hook plate (2424).

4. The milling equipment for bearing production according to claim 2, characterized in that: When the ratchet pawl (2421) is linked with the trigger ratchet (2412a) of the ratchet bar (2412), the rotation angle α of the ratchet pawl (2421) is in the range of 30-50°; When the pawl (2421) is linked with the remaining ratchet teeth of the ratchet bar (2412), the rotation angle β of the pawl (2421) is in the range of 20-40°, and α is greater than β.

5. The milling equipment for bearing production according to claim 1, characterized in that: A first support plate (2413) and a second support plate (2414) are provided at the bottom of the lifting frame (241); The lifting frame (241) is fixedly arranged on the first supporting plate (2413); The first support plate (2413) and the second support plate (2414) are arranged opposite to each other and are respectively arranged on the first side plate (210) and the second side plate (220); A first plugging rod (2415) extends from the first supporting plate (2413) in a horizontal direction; The second support plate (2414) extends a second plug-in rod (2416) in a horizontal direction; The second plug-in rod (2416) is inserted into the first plug-in rod (2415).

6. The milling equipment for bearing production according to claim 1, characterized in that: The buffer feed assembly (200) further comprises a first adjusting screw (260) and a second adjusting screw (270); The first adjusting screw (260) passes through the material box (100) and is connected to a side wall of the first side plate (210) facing away from the second side plate (220); The second adjusting screw (270) passes through the material box (100) and is connected to a side wall of the second side plate (220) facing away from the first side plate (210); The first adjusting screw (260) and the second adjusting screw (270) are suitable for adjusting the distance between the first side plate (210) and the second side plate (220) when rotating.

7. A bushing production process, characterized in that: The sleeve production process is suitable for using the milling equipment for bearing production as described in any one of claims 1 to 6 to perform bearing sleeve production; The sleeve production process comprises: Putting the steel pipe (500) into the material box (100), and using the buffering feeding assembly (200) to buffer the fall of the steel pipe (500); Wait until the steel pipe (500) fills the material box (100); The sequential material taking component (300) sequentially takes out the steel pipes (500) at the material outlet (110) of the material box (100); The steel pipe (500) is milled by a milling assembly (400).

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