CN111438315B

CN111438315B - Bearing ring rolling machine

Info

Publication number: CN111438315B
Application number: CN202010267956.3A
Authority: CN
Inventors: 马桢明; 方进; 史洪军; 倪林
Original assignee: Anhui Yuanda Bearing Technology Co ltd
Current assignee: Anhui Yuanda Bearing Technology Co ltd
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2021-08-24
Anticipated expiration: 2040-04-07
Also published as: CN111438315A

Abstract

The invention discloses a bearing ring rolling mill which comprises a driving device, a lathe bed, a support, a main roller, a holding roller and a mandrel, wherein the main roller is arranged on the main roller; the machine body is provided with a holding roller and a bracket capable of moving along the horizontal direction; the bracket is provided with a main roller which is longitudinally arranged; the driving device is connected with the main roller; the bracket is provided with a left holding arm and a right holding arm which are coaxial with the mandrel, and the holding arms can hold a bearing arranged at the upper end of the mandrel tightly; a continuous feeding device is arranged right above the initial processing position of the mandrel and is positioned above the arm; during feeding, the arm is opened in the left-right direction, and the continuous feeding device vertically downwards sleeves the workpiece to be machined after forging and stamping onto the mandrel. The invention can greatly reduce the time interval during feeding, keep the ring rolling mill to operate continuously, and reduce the processing time to about 80 percent of the original conventional processing mode; and the power consumption is less in the processing process, the energy is saved, and the processed bearing ring has better and more stable quality.

Description

Bearing ring rolling machine

Technical Field

The invention relates to the technical field of machining, in particular to a bearing ring rolling machine.

Background

The bearing ring is a ring-shaped part of a centripetal rolling bearing with one or more raceways, and the production process sequentially comprises the working procedures of forging, stamping, ring rolling and finish machining. The rolling of the ring (also called ring rolling, reaming and ring rolling) is a plastic processing technology which makes the ring produce continuous local plastic deformation by means of a ring rolling machine (also called ring rolling machine, ring rolling mill and reaming machine) so as to realize wall thickness reduction, diameter enlargement and cross section profile forming. The conventional ring rolling mill in the market is disconnected with the forging and stamping processes, the forging and stamping rhythm is much higher than the ring rolling rhythm, so that a workpiece to be machined after forging and stamping needs to wait for a long time to enter the ring rolling mill for ring rolling, a lot of waiting time is left in the operation process of an operator, and manpower is wasted; in addition, the workpiece to be machined after forging and stamping is cooled again after a long waiting time, so that the machining difficulty of the ring rolling machine is greatly increased, and the working efficiency is seriously influenced.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a bearing ring rolling mill.

The invention is realized by adopting the following technical scheme:

a bearing ring rolling mill comprises a driving device, a lathe bed, a support, a main roller, a holding roller and a mandrel; the machine body is provided with a holding roller and a bracket capable of moving along the horizontal direction; the bracket is provided with a main roller which is longitudinally arranged; the driving device is connected with the main roller; the bracket is provided with a left holding arm and a right holding arm which are coaxial with the mandrel, and the holding arms can hold a bearing arranged at the upper end of the mandrel tightly; a continuous feeding device is arranged right above the initial processing position of the mandrel and is positioned above the arm; during feeding, the arm is opened in the left-right direction, and the continuous feeding device vertically downwards sleeves the workpiece to be machined after forging and stamping onto the mandrel.

Further, the continuous feeding device comprises a feeding device and a loading device; the feeding device conveys the workpiece to be machined after forging and stamping to the upper part of the feeding device; the feeding device vertically downwards sleeves the workpiece to be machined, which is sent from the feeding device, on the mandrel.

Further, the feeding device comprises a first square pipe, a first chain plate conveyor, a screw, a connecting plate and a locking block; a group of first chain plate conveyors arranged side by side is arranged in the first square pipe; corresponding connecting plates are arranged on the two first chain plate conveyors along the inner wall positions of the two sides of the first square pipe; the connecting plate is connected with a screw through an internal thread; one end of the screw rod penetrates through the connecting plate and then is fixed with the locking blocks, and the distance between the two corresponding locking blocks is larger than the outer diameter of the workpiece to be machined.

Further, the other end of the screw is provided with an inner hexagonal hole; the side surfaces of two ends of the first square pipe are respectively provided with a guide pipe; the diameter of the inner hole of the guide pipe is larger than the diameter of the circumscribed circle of the hexagonal socket of the screw, and the axis of the guide pipe is the same as that of the hexagonal socket of the screw.

Furthermore, the surface that the screw rod was provided with the one end of interior hexagonal hole sets up the limiting plate.

Further, the feeding device comprises a second square pipe, a second chain plate conveyor and a discharging mechanism; the second square pipe is vertically arranged, and the upper end of the second square pipe is connected with the discharge end of the first square pipe of the feeding device; a group of second chain plate conveyors for carrying out vertical downward transportation is arranged in the second square pipe; the left side surface and the right side surface of the second chain plate conveyor are respectively and correspondingly provided with a blanking mechanism; the vertical central line of the second square pipe is superposed with the axis of the mandrel; the blanking device supports the left side and the right side of the lower surface of the workpiece to be machined, conveys the workpiece to be machined to a discharge port of the feeding device, and releases the workpiece to be machined to enable the workpiece to be machined to be sleeved on the mandrel.

Further, the blanking mechanism comprises a connecting block, a hydraulic cylinder, a hinge, a fixing plate, a supporting block and a locking block; one side of the connecting block is fixed with the second chain plate conveyor, and the lower surface of the other side surface is movably connected with a supporting block through a hinge; the upper surface of the supporting block is fixed with one end of the inclined fixing plate; the other end of the fixing plate is provided with a through hole; the connecting rod arranged on the hydraulic cylinder on the front side of the connecting block can pass through the through hole of the fixing plate to be locked with the locking block.

Furthermore, the discharge end of the first square pipe is provided with an opening corresponding to the feed end of the second square pipe.

In conclusion, the invention has the following beneficial effects: (1) the invention changes the original feeding mode, the mandrel is tightly held by the left holding arm and the right holding arm, and then the mandrel is processed, so that the time interval during feeding can be greatly reduced, and the continuous operation of the ring rolling mill is kept; (2) the running time of the workpiece to be machined between the working procedures can be reduced through the continuous feeding device; the processing time can be reduced to about 80 percent of the original conventional processing mode; (3) the heat loss of the parts to be machined in the continuous feeding device is low, the optimal machining stability of each part to be machined can be guaranteed, the machining is easier, the power consumption in the machining process is low, the energy is saved, the quality of the machined bearing ring is better and more stable, and the assembly line type operation can be realized.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a partial structure schematic diagram of a conventional product.

Fig. 3 is a schematic structural view of the continuous feeding device of the present invention.

Fig. 4 is a schematic structural view of the feeding device of the present invention.

FIG. 5 is a schematic structural diagram of a loading device according to the present invention.

Fig. 6 is a schematic top view of the feeding device a of the present invention.

Fig. 7 is a schematic structural view of the blanking mechanism of the present invention.

Fig. 8 is a schematic structural view of the feeding mechanism of the present invention moving to different positions.

FIG. 9 is a schematic structural diagram of a member to be machined of the bearing ring according to the present invention.

Wherein: a feeding device 100; a feeding device 200; a driving device 300; a bed 400; a bracket 500; a main roll 600; a wrap around roller 700; a mandrel 800; the arm 900; a first square tube 101; a first apron conveyor 102; a stopper plate 103; a guide tube 104; a screw 105; a connecting plate 106; an opening 107; a locking block 108; a second square tube 201; a second apron conveyor 202; a blanking mechanism 203; a connecting block 2031; a hydraulic cylinder 2032; a hinge 2033; a fixing plate 2034; a support block 2035; the locking blocks 2036.

Detailed Description

As shown in fig. 1 to 9, the present invention is further explained in conjunction with the embodiments and the accompanying drawings.

Example 1

A bearing ring rolling mill comprises a driving device 300, a lathe bed 400, a support 500, a main roller 600, a holding roller 700 and a mandrel 800; the bed 400 is provided with a holding roller 700 and a bracket 500 capable of moving along the horizontal direction; a main roller 600 arranged longitudinally is mounted on the bracket 500; the driving device 300 is connected with the main roller 600; the bracket 500 is provided with a left holding arm 900 and a right holding arm 900 which are coaxial with the mandrel 800, and the holding arms 900 can hold a bearing arranged at the upper end of the mandrel 800; a continuous feeding device is arranged right above the initial processing position of the mandrel 800 and is positioned above the arm 900; during feeding, the arm 900 is opened in the left-right direction, and the continuous feeding device vertically sleeves the workpiece to be machined, which is stamped by forging, downwards onto the mandrel 800. As shown in fig. 2, when a to-be-processed workpiece after forging and stamping is added to a ring rolling mill commonly used in the market, a hydraulic rod extends out to drive a support to rotate upwards to separate the support from a mandrel 800, then the to-be-processed workpiece is sleeved on the mandrel 800 manually or by a manipulator, then the hydraulic rod contracts to sleeve the upper end of the mandrel 800 with the support, and then processing is performed, and the support rotates and then is separated from and combined with the mandrel 800 by using the hydraulic rod, so that the time is long, and the efficiency is low; moreover, the temperature of the workpiece to be processed is greatly reduced due to long-time exposure, which is not beneficial to ring rolling; after the ring rolling process is completed, the manipulator grabs the workpiece to be machined to be installed, and the time interval between the bracket and the mandrel is 800 minutes and closes, so that a lot of time is delayed, the flow line production cannot be met, the efficiency is low, and the energy waste is large. The continuous feeding device is used for conveying the workpieces to be machined to the position right above the mandrel 800 after forging and stamping, after one workpiece to be machined is machined, the arm 900 can be quickly opened in the left-right direction, then one workpiece to be machined is put down through the continuous feeding device without rotating a support, time is saved greatly, machining efficiency is improved, the workpieces to be machined in the same batch are machined within 10 hours by using a conventional ring rolling machine, and the continuous feeding device is only required to be completed within 8 hours.

Example 2

A bearing ring rolling mill comprises a driving device 300, a lathe bed 400, a support 500, a main roller 600, a holding roller 700 and a mandrel 800; the bed 400 is provided with a holding roller 700 and a bracket 500 capable of moving along the horizontal direction; a main roller 600 arranged longitudinally is mounted on the bracket 500; the driving device 300 is connected with the main roller 600; the bracket 500 is provided with a left holding arm 900 and a right holding arm 900 which are coaxial with the mandrel 800, and the holding arms 900 can hold a bearing arranged at the upper end of the mandrel 800; a continuous feeding device is arranged right above the initial processing position of the mandrel 800 and is positioned above the arm 900; during feeding, the arm 900 is opened in the left-right direction, and the continuous feeding device vertically sleeves the workpiece to be machined, which is stamped by forging, downwards onto the mandrel 800. The continuous feeding device comprises a feeding device 100 and a feeding device 200; the feeding device 100 conveys the workpiece to be machined after forging and stamping to the upper part of the feeding device 200; the feeding device 200 vertically and downwardly sleeves the workpiece to be processed, which is fed from the feeding device 100, on the mandrel 800. The feeding device 100 and the feeding device 200 are all provided with workpieces to be conveyed and stored, so that workers can carry out other work after the forging and stamping processes are completed, and the labor is saved.

Example 3

A bearing ring rolling mill comprises a driving device 300, a lathe bed 400, a support 500, a main roller 600, a holding roller 700 and a mandrel 800; the bed 400 is provided with a holding roller 700 and a bracket 500 capable of moving along the horizontal direction; a main roller 600 arranged longitudinally is mounted on the bracket 500; the driving device 300 is connected with the main roller 600; the bracket 500 is provided with a left holding arm 900 and a right holding arm 900 which are coaxial with the mandrel 800, and the holding arms 900 can hold a bearing arranged at the upper end of the mandrel 800; a continuous feeding device is arranged right above the initial processing position of the mandrel 800 and is positioned above the arm 900; during feeding, the arm 900 is opened in the left-right direction, and the continuous feeding device vertically sleeves the workpiece to be machined, which is stamped by forging, downwards onto the mandrel 800. The continuous feeding device comprises a feeding device 100 and a feeding device 200; the feeding device 100 conveys the workpiece to be machined after forging and stamping to the upper part of the feeding device 200; the feeding device 200 vertically and downwardly sleeves the workpiece to be processed, which is fed from the feeding device 100, on the mandrel 800. The feeding device 100 comprises a first square pipe 101, a first chain plate conveyor 102, a screw 105, a connecting plate 106 and a locking block 108; a group of first chain plate conveyors 102 which are arranged side by side is arranged in the first square pipe 101; corresponding connecting plates 106 are arranged on the two first chain conveyors 102 along the inner wall positions of the two sides of the first square pipe 101; the connecting plate 106 is connected with a screw 105 through an internal thread; one end of the screw 105 passes through the connecting plate 106 and then is fixed with the locking blocks 108, and the distance between the two corresponding locking blocks 108 is larger than the outer diameter of the workpiece to be machined. The other end of the screw 105 is provided with an inner hexagonal hole; the side surfaces of two ends of the first square pipe 101 are respectively provided with a guide pipe 104; the diameter of the inner hole of the guide pipe 104 is larger than the diameter of the circumcircle of the hexagon socket of the screw 105, and the axis of the guide pipe 104 is the same as the axis of the hexagon socket of the screw 105, so that when the device is used, the device can be quickly screwed and loosened by an electric torque wrench arranged outside the guide pipe 104 for conveying, and the efficiency is high. The outer surface of the end, provided with the hexagon socket, of the screw 105 is provided with a limiting plate 103, so that limiting can be performed, and the safety of the device is guaranteed. The discharge end of the first square pipe 101 is provided with an opening 107 corresponding to the feed end of the second square pipe 201, so that the workpieces to be processed can be conveyed from the feeding device 100 to the feeding device 200. Treat the machined part at conveying, storage in-process, heat loss is few to make treat that the machined part gets into ring rolls after, more easily processing, the bearing ring quality after the ring rolls is better moreover, and is more stable.

Example 4

A bearing ring rolling mill comprises a driving device 300, a lathe bed 400, a support 500, a main roller 600, a holding roller 700 and a mandrel 800; the bed 400 is provided with a holding roller 700 and a bracket 500 capable of moving along the horizontal direction; a main roller 600 arranged longitudinally is mounted on the bracket 500; the driving device 300 is connected with the main roller 600; the bracket 500 is provided with a left holding arm 900 and a right holding arm 900 which are coaxial with the mandrel 800, and the holding arms 900 can hold a bearing arranged at the upper end of the mandrel 800; a continuous feeding device is arranged right above the initial processing position of the mandrel 800 and is positioned above the arm 900; during feeding, the arm 900 is opened in the left-right direction, and the continuous feeding device vertically sleeves the workpiece to be machined, which is stamped by forging, downwards onto the mandrel 800. The continuous feeding device comprises a feeding device 100 and a feeding device 200; the feeding device 100 conveys the workpiece to be machined after forging and stamping to the upper part of the feeding device 200; the feeding device 200 vertically and downwardly sleeves the workpiece to be processed, which is fed from the feeding device 100, on the mandrel 800. The feeding device 100 comprises a first square pipe 101, a first chain plate conveyor 102, a screw 105, a connecting plate 106 and a locking block 108; a group of first chain plate conveyors 102 which are arranged side by side is arranged in the first square pipe 101; corresponding connecting plates 106 are arranged on the two first chain conveyors 102 along the inner wall positions of the two sides of the first square pipe 101; the connecting plate 106 is connected with a screw 105 through an internal thread; one end of the screw 105 passes through the connecting plate 106 and then is fixed with the locking blocks 108, and the distance between the two corresponding locking blocks 108 is larger than the outer diameter of the workpiece to be machined. The other end of the screw 105 is provided with an inner hexagonal hole; the side surfaces of two ends of the first square pipe 101 are respectively provided with a guide pipe 104; the diameter of the inner hole of the guide tube 104 is larger than the diameter of the circumscribed circle of the hexagonal socket of the screw 105, and the axis of the guide tube 104 is the same as the axis of the hexagonal socket of the screw 105. The feeding device 200 comprises a second square pipe 201, a second chain plate conveyor 202 and a discharging mechanism 203; the second square pipe 201 is vertically arranged, and the upper end of the second square pipe 201 is connected with the discharge end of the first square pipe 101 of the feeding device 100; a group of second chain plate conveyors 202 for carrying out vertical downward transportation is arranged in the second square pipe 201; the left side surface and the right side surface of the second chain plate conveyor 202 are respectively and correspondingly provided with a blanking mechanism 203; the vertical center line of the second square pipe 201 is superposed with the axis of the mandrel; the blanking device 203 supports the left side and the right side of the lower surface of the workpiece to be processed, conveys the workpiece to be processed to the discharge port of the feeding device 200, and releases the workpiece to be processed to enable the workpiece to be processed to be sleeved on the mandrel 800.

Example 5

As shown in fig. 7 and 8, the blanking mechanism 203 includes a connecting block 2031, a hydraulic cylinder 2032, a hinge 2033, a fixing plate 2034, a supporting block 2035, and a locking block 2036; one side of the connecting block 2031 is fixed to the second apron conveyor 202, and the lower surface of the other side is movably connected to a supporting block 2035 by a hinge 2033; the upper surface of the supporting block 2035 is fixed to one end of an inclined fixing plate 2034; the other end of the fixing plate 2034 is provided with a through hole; the connecting rod of the hydraulic cylinder 2032 disposed on the front surface of the connecting block 2031 may pass through the through hole of the fixing plate 2034 to be locked with the locking block 2036. In the downward conveying process, the connecting rod on the hydraulic cylinder 2032 penetrates through the through hole of the fixing plate 2034 to be locked with the locking block 2036, so that the two sides of the workpiece to be machined are effectively supported by the supporting block 2035; when the workpiece is conveyed to the discharge hole of the feeding device 200, the connecting rod on the hydraulic cylinder 2032 is controlled to contract, the supporting block 2035 rotates and loosens by taking the hinge 2033 as a rotating shaft under the action of gravity, and the workpiece to be machined falls onto the mandrel 800; the second chain conveyor 202 drives the blanking mechanism 203 to continue to rotate to the outer side of the second chain conveyor 202, the supporting block 2035 turns over under the action of gravity, and one end of the fixing plate 2034 with the through hole is in contact with the connecting block 2031, and then the connecting rod on the hydraulic cylinder 2032 is controlled to extend out and pass through the through hole of the fixing plate 2034 to be locked with the locking block 2036; when the second chain scraper conveyor 202 drives the blanking mechanism 203 to continue to rotate to the inner side of the second chain scraper conveyor 202, the workpiece to be machined, which falls from the feeding device 100, can be supported, then the workpiece is conveyed to the discharge hole of the feeding device 200, then the workpiece to be machined is sleeved on the mandrel 800, the power device of the ring rolling machine is started, the workpiece to be machined is machined into a bearing ring blank with required specification, and then finish machining is carried out, so that the raw material utilization rate is improved, and the machining cost is reduced.

Although particular embodiments of the invention have been described and illustrated in detail, it should be understood that various equivalent changes and modifications could be made to the above embodiments in accordance with the spirit of the invention, and the resulting functional effects would still fall within the scope of the invention.

Claims

1. A bearing ring rolling mill comprises a driving device, a lathe bed, a support, a main roller, a holding roller and a mandrel; the machine body is provided with a holding roller and a bracket capable of moving along the horizontal direction; the bracket is provided with a main roller which is longitudinally arranged; the driving device is connected with the main roller; the method is characterized in that: the bracket is provided with a left holding arm and a right holding arm which are coaxial with the mandrel, and the holding arms can hold a bearing arranged at the upper end of the mandrel tightly; a continuous feeding device is arranged right above the initial processing position of the mandrel and is positioned above the arm; during feeding, the arm is opened in the left-right direction, and the continuous feeding device vertically downwards sleeves the workpiece to be machined after forging and stamping onto the mandrel;

the continuous feeding device comprises a feeding device and a loading device; the feeding device conveys the workpiece to be machined after forging and stamping to the upper part of the feeding device; the feeding device vertically downwards sleeves the workpiece to be machined, which is sent from the feeding device, on the mandrel;

the feeding device comprises a first square pipe, a first chain plate conveyor, a screw, a connecting plate and a locking block; a group of first chain plate conveyors arranged side by side is arranged in the first square pipe; corresponding connecting plates are arranged on the two first chain plate conveyors along the inner wall positions of the two sides of the first square pipe; the connecting plate is connected with a screw through an internal thread; one end of the screw penetrates through the connecting plate and then is fixed with the locking blocks, and the distance between the two corresponding locking blocks is larger than the outer diameter of the workpiece to be machined;

the feeding device comprises a second square pipe, a second chain plate conveyor and a discharging mechanism; the second square pipe is vertically arranged, and the upper end of the second square pipe is connected with the discharge end of the first square pipe of the feeding device; a group of second chain plate conveyors for carrying out vertical downward transportation is arranged in the second square pipe; the left side surface and the right side surface of the second chain plate conveyor are respectively and correspondingly provided with a blanking mechanism; the vertical central line of the second square pipe is superposed with the axis of the mandrel; the blanking mechanism supports the left side and the right side of the lower surface of the workpiece to be machined, conveys the workpiece to be machined to a discharge hole of the feeding device, releases the workpiece to be machined, and enables the workpiece to be machined to be sleeved on the mandrel.

2. A bearing ring rolling mill according to claim 1, characterized in that: the other end of the screw is provided with an inner hexagonal hole; the side surfaces of two ends of the first square pipe are respectively provided with a guide pipe; the diameter of the inner hole of the guide pipe is larger than the diameter of the circumscribed circle of the hexagonal socket of the screw, and the axis of the guide pipe is the same as that of the hexagonal socket of the screw.

3. A bearing ring rolling mill according to claim 2, characterized in that: and a limiting plate is arranged on the outer surface of one end, provided with the hexagon socket, of the screw rod.

4. A bearing ring rolling mill according to claim 1, characterized in that: the blanking mechanism comprises a connecting block, a hydraulic cylinder, a hinge, a fixing plate, a supporting block and a locking block; one side of the connecting block is fixed with the second chain plate conveyor, and the lower surface of the other side surface is movably connected with a supporting block through a hinge; the upper surface of the supporting block is fixed with one end of the inclined fixing plate; the other end of the fixing plate is provided with a through hole; the connecting rod arranged on the hydraulic cylinder on the front side of the connecting block can pass through the through hole of the fixing plate to be locked with the locking block.

5. A bearing ring rolling mill according to claim 1, characterized in that: the discharge end of the first square pipe is provided with an opening corresponding to the feed end of the second square pipe.