CN111618643A

CN111618643A - Vertical cold rolling machine tool

Info

Publication number: CN111618643A
Application number: CN202010483719.0A
Authority: CN
Inventors: 刘乐民
Original assignee: Ningbo Naitejia Machinery Manufacturing Co ltd
Current assignee: Nanyang Qinda Steel Pipe Technology Co.,Ltd.; Ningbo Naitejia Machinery Manufacturing Co.,Ltd.
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2020-09-04

Abstract

The invention discloses a vertical cold rolling machine tool, which comprises a base, wherein two frames are vertically arranged on the base, rectangular square holes are respectively arranged on the two frames, a rolling axle assembly is assembled at the lower part of each rectangular square hole, each rolling axle assembly comprises a reduction motor and a rolling wheel which are connected and driven, a mandrel assembly is fixed on the side surface of each frame above the rolling axle assembly, each mandrel assembly comprises mounting seats, two sides of each mounting seat are assembled on vertical guide rails, an oil cylinder is arranged between the mounting seats, a mandrel is connected onto a piston rod of the oil cylinder, a roundness roller assembly for ensuring the roundness precision of a workpiece is fixed on each frame, a supporting wheel assembly is arranged on each frame above the mandrel assembly, each supporting wheel assembly comprises a main sliding block driven by the main oil cylinder, each main sliding block is provided with a supporting wheel, and each frame is also provided with a feeding and, unloading slide and material claw. The advantages are that: the structure is reasonable, the occupied area is small, and workpieces with the outer diameter of 250mm-400mm can be processed.

Description

Vertical cold rolling machine tool

Technical Field

The invention relates to the technical field of cold rolling machine tool manufacturing, in particular to a vertical cold rolling machine tool.

Background

The bearing ring is in a circular ring shape, the traditional processing method of the blank is hot forging and turning, and in recent years, with the gradual maturity of cold rolling processing technology, the turning is partially replaced. The cold rolling processing has the advantages of energy conservation, material conservation, high efficiency and the like, can reduce the processing cost, and the bearing ring processed by the cold rolling has high density, reasonable metal streamline distribution and a compressive stress state on the surface, and can reject parts with internal defects (playing a role in inspection), so that the service life of the bearing is greatly prolonged.

The existing cold rolling machine is horizontal in structural layout, all shaft systems of a horizontal cold rolling machine tool are in the same horizontal plane, rolling pressure is in the horizontal direction, a main structure bearing the rolling pressure is mainly the lower part of a rack, an auxiliary pull rod is arranged on the upper part of the rack, and the pull rod cannot be large in size and poor in rigidity. The horizontal cold rolling machine tool is only opened in the front and the upper part, so that the adjustment and the maintenance of the machine tool are inconvenient; the feeding and discharging channels of the workpieces can be vertically arranged, the workpieces automatically complete the feeding action by utilizing the self weight, the feeding and discharging structure is simple, and serious collision damage can be caused if the weight of the workpieces is large. In addition, if a large-sized cold rolling machine adopts a horizontal structure, the occupied area of the large-sized cold rolling machine is very large, and for the reasons, the cold rolling machine capable of processing workpieces with the outer diameter of more than 250mm is lacked in the current market.

Disclosure of Invention

The invention aims to make up the defects, and discloses a vertical cold rolling machine tool which is reasonable in structure, small in occupied area and capable of processing workpieces with the outer diameter of 250-400 mm to the society.

The technical scheme of the invention is realized as follows:

vertical cold rolling machine tool, which comprises a base, two frames are vertically arranged on the base, rectangular square holes are respectively arranged on the two frames, a rolling axle assembly is assembled at the lower part of each rectangular square hole, the rolling axle assembly comprises a reduction motor and a rolling wheel connected with transmission, a mandrel assembly is fixed above the rolling axle assembly on the side surface of each frame, the mandrel assembly comprises mounting seats assembled on vertical guide rails on two sides, an oil cylinder is arranged between the mounting seats, a mandrel is connected onto a piston rod of the oil cylinder, a roundness roller assembly used for ensuring the roundness precision of a workpiece is fixed on each frame, a supporting wheel assembly is arranged above the mandrel assembly on each frame, the supporting wheel assembly comprises a main sliding block driven by a main oil cylinder, supporting wheels are arranged on the main sliding block, and a feeding and discharging mechanism is also arranged on each frame and comprises a feeding and discharging slide, and a material claw.

The measures for further optimizing the technical scheme are as follows:

the speed reducing motor is connected with the rolling wheel for transmission through a coupler; the rolling axle assembly further comprises a first bearing seat and a second bearing seat, and the first bearing seat and the second bearing seat are mounted at the lower parts of the rectangular square holes of the corresponding machine frame.

Horizontal guide rails are respectively arranged between the mandrel and the mounting seats on the two sides, the bottom of each mounting seat is provided with a reset rod, and the upper end of each reset rod is connected with a reset spring.

The roundness roller assembly comprises a servo motor, a rolling guide rail, a ball screw and a roller, wherein the ball screw is arranged on the rolling guide rail and is connected with the servo motor for transmission, a bracket is fixed at the front end of the ball screw, and the roller is assembled at the front end of the bracket.

Supports are fixed on two sides of the main sliding block, supporting wheels are respectively arranged on the supports, and the two supporting wheels are arranged on two sides of the workpiece; the supporting wheel is a thick-wall rolling bearing fully filled with rollers.

The main sliding block is assembled on a sliding block guide rail which is vertically arranged.

The tail of the feeding slideway is provided with a horizontal pushing cylinder, the feeding claw is arranged on one side of the tail of the feeding slideway, and a pushing cylinder is arranged beside the feeding slideway and in parallel with the feeding claw.

The bottom of the feeding slideway is provided with a feeding slideway basal body which is fixed with the frame; the bottom of the blanking slideway is provided with a blanking slideway basal body which is fixed with the frame.

The bottom of the feeding slideway is provided with an adjusting block, and the adjusting block is provided with an adjusting groove.

The rack is also provided with a measuring mechanism, the measuring mechanism comprises a measuring mechanism base body fixed with the rack, the measuring mechanism base body is provided with a measuring guide rail and a measuring slide block which are matched, and the measuring slide block is fixed with a grating ruler.

Compared with the prior art, the invention has the advantages that:

the vertical type rolling machine is reasonable in structure, adopts a vertical layout, and is suitable for processing workpieces with the outer diameter of 250-400 mm, the supporting wheel assembly providing downward pressure, the mandrel arranged in an inner hole of the workpiece during processing and the rolling wheel providing rolling force are vertically distributed, the workpieces are vertically arranged and processed, the workpieces are loaded from the loading slideway on one side of the rack, and the workpieces are unloaded from the unloading slideway on the other side during processing.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a right side cross-sectional view of the present invention;

FIG. 3 is a schematic view of the frame of FIG. 1;

FIG. 4 is a schematic structural view of the grinding spindle assembly of FIG. 1;

FIG. 5 is a schematic structural view of the mandrel assembly of FIG. 1;

FIG. 6 is a left side cross-sectional view of FIG. 5;

FIG. 7 is a schematic structural view of the circle roller assembly of FIG. 1;

FIG. 8 is a schematic structural view of the support wheel assembly of FIG. 1;

FIG. 9 is a left side view of FIG. 8;

FIG. 10 is a partial cross-sectional view of the support wheel of FIG. 8;

FIG. 11 is a schematic view of the loading portion of the loading and unloading mechanism of FIG. 1;

FIG. 12 is a top view of FIG. 11;

FIG. 13 is a schematic view of the measurement mechanism of FIG. 1;

FIG. 14 is a top view of FIG. 13;

fig. 15 is a schematic view of the process of the present invention.

Detailed Description

The names of the reference numbers in the drawings of the invention are as follows:

the device comprises a base 1, a frame 11, a rectangular square hole 11a, a rolling wheel shaft assembly 2, a speed reducing motor 21, a rolling wheel 22, a coupling 23, a first bearing seat 24, a second bearing seat 25, a mandrel assembly 3, a vertical guide rail 31, a mounting seat 32, an oil cylinder 33, a piston rod 33a, a mandrel 34, a horizontal guide rail 35, a reset rod 36, a reset spring 36a, a roundness roller assembly 4, a servo motor 41, a rolling guide rail 42, a ball screw 43 and a roller 44, the device comprises a support 45, a support wheel assembly 5, a main oil cylinder 51, a main slide block 52, a support wheel 53, a slide block guide rail 54, a support 55, a feeding slide way 61, a feeding slide way base body 61a, an adjusting block 61b, an adjusting groove 61c, a discharging slide way 62, a discharging slide way base body 62a, a material claw 63, a horizontal pushing air cylinder 64, a pushing air cylinder 65, a measuring mechanism 7, a measuring mechanism base body 71, a measuring guide rail 72, a measuring slide block 73, a grating ruler 74 and a workpiece 8.

The invention is described in further detail below with reference to the accompanying drawings:

as shown in figures 1 to 15 of the drawings,

a vertical cold rolling machine tool comprises a base 1, two frames 11 are vertically arranged on the base 1, rectangular square holes 11a are respectively arranged on the two frames 11, a rolling wheel shaft assembly 2 is assembled at the lower part of the rectangular square holes 11a, the rolling wheel shaft assembly 2 comprises a reduction motor 21 and a rolling wheel 22 which are connected and driven, a mandrel assembly 3 is fixed on the side surface of the frame 11 above the rolling wheel shaft assembly 2, the mandrel assembly 3 comprises mounting seats 32, two sides of which are assembled on vertical guide rails 31, an oil cylinder 33 is arranged between the mounting seats 32, a mandrel 34 is connected on a piston rod 33a of the oil cylinder 33, a roundness roller assembly 4 for ensuring the roundness precision of a workpiece is fixed on the frame 11, a supporting wheel assembly 5 is arranged on the frame 11 above the mandrel assembly 3, the supporting wheel assembly 5 comprises a main sliding block 52 driven by a main oil cylinder 51, a supporting wheel 53 is arranged on the main sliding block 52, and a loading and, the loading and unloading mechanism comprises a loading slideway 61, a unloading slideway 62 and a material claw 63.

The base 1 and the frame 11 serve as the basis of the entire cold rolling machine, which must be kept sufficiently rigid under the action of a large rolling force and driving torque to ensure good precision of the processed product.

In the embodiment, the speed reducing motor 21 is connected with the rolling wheel 22 for transmission through a coupler 23; the rolling axle assembly 2 further comprises a first bearing seat 24 and a second bearing seat 25, and the first bearing seat 24 and the second bearing seat 25 are mounted at the lower part of the rectangular square hole 11a of the corresponding frame 11.

In the embodiment, horizontal guide rails 35 are respectively arranged between the mandrel 34 and the mounting seats 32 on both sides, the bottoms of the mounting seats 32 are respectively provided with a reset rod 36, and the upper end of the reset rod 36 is connected with a reset spring 36 a. The horizontal guide rail 35 not only can play a role of guiding, but also can provide a supporting force for the mandrel 34. The return arm 36 and the return spring 36a return the spindle 34 upward when the support wheel 53 releases the pressing force on the spindle 34.

In the embodiment, the roundness roller assembly 4 includes a servo motor 41, a rolling guide rail 42, a ball screw 43, and a roller 44, the ball screw 43 is disposed on the rolling guide rail 42 and is connected to the servo motor 41 for transmission, a bracket 45 is fixed to a front end of the ball screw 43, and the roller 44 is mounted on a front end of the bracket 45.

In the embodiment, two supports 55 are fixed on two sides of the main slider 52, the supports 55 are respectively provided with support wheels 53, and the two support wheels 53 are arranged on two sides of the workpiece; the supporting wheels 53 are thick-wall rolling bearings (the outer ring has a larger wall thickness) fully filled with rollers, and two supporting wheels 53 are arranged to ensure the balance of downward pressure on two sides of the workpiece.

In an embodiment, the main slide 52 is mounted on a vertically disposed slide rail 54.

In the embodiment, the tail of the feeding slideway 61 is provided with a horizontal pushing cylinder 64, the material claw 63 is arranged on one side of the tail of the feeding slideway 61, and a pushing cylinder 65 is arranged beside the feeding slideway 61 and in parallel to the material claw.

In the embodiment, the bottom of the feeding slideway 61 is provided with a feeding slideway base body 61a, and the feeding slideway base body 61a is fixed with the rack 11; the bottom of the blanking slideway 62 is provided with a blanking slideway basal body 62a, and the blanking slideway basal body 62a is fixed with the frame 11.

In the embodiment, the bottom of the loading chute 61 is provided with an adjusting block 61b, and the adjusting block 61b is provided with an adjusting groove 61 c. The inclination of the feeding slide way 61 can be adjusted by utilizing the adjusting groove 61c, so that the workpiece 8 can slide down stably and slowly, and the workpiece 8 is prevented from being collided and damaged.

In the embodiment, the frame 11 is further provided with a measuring mechanism 7, the measuring mechanism 7 includes a measuring mechanism base 71 fixed to the frame 11, the measuring mechanism base 71 is provided with a measuring guide rail 72 and a measuring slide 73, which are adapted to each other, and the measuring slide 73 is fixed with a grating ruler 74.

The working principle is as follows:

the cold rolling machine tool adopts a vertical layout, two racks 11 are vertically arranged on a base 1, a rolling axle assembly 2, a mandrel assembly 3 and a supporting wheel assembly 5 are arranged on the racks 11 from bottom to top, a feeding mechanism mainly composed of a feeding slideway 61 is arranged on one side of each rack 11, and a discharging mechanism mainly composed of a discharging slideway 62 is arranged on the other side of each rack 11. The workpiece 8 to be processed is vertically placed in the feeding slide way 61, the workpiece 8 slides downwards to the bottom of the feeding slide way 61 along the feeding slide way 61, the workpiece 8 is pushed into the feeding claw 63 by the horizontal pushing cylinder 64, and then the workpiece 8 is pushed into a processing area between the two racks 11 by the pushing cylinder 65. After the workpiece 8 is in place, the mandrel component 3 adjusts the vertical height by using the vertical guide rail 31, the oil cylinder 33 is started, the piston rod 33a extends out, and the mandrel 34 is sent into an inner hole of the workpiece 8; the main cylinder 51 of the support wheel assembly 5 is then operated to lower the main slide 52 with the support wheel 53 and bring the support wheel 53 into supporting contact with the mandrel 34. As shown in fig. 15, during cold rolling, the supporting wheel 53 provides a downward force, the rolling wheel 22 is driven by the reduction motor 21 to rotate clockwise, the rolling wheel 22 (as an outer die, the outer circular surface of the rolling wheel 22 has a profiled groove of the workpiece profile) contacts the outer surface of the workpiece 8, the mandrel 34 (as an inner die, the outer circular surface of the mandrel 34 also has a profiled groove of the workpiece profile) contacts the inner surface of the workpiece 8, the mandrel 34 performs counterclockwise driven rotation, the mandrel 34 continuously leans against the rolling wheel 22 under the pushing of the supporting wheel 53, so that the wall thickness of the workpiece 8 is reduced, the diameter of the workpiece 8 is increased, the profiled groove is mapped on the workpiece 8, and the cold rolling of the workpiece 8 is completed; the workpiece 8 after cold rolling is completely fed from the feeding chute 62 (the workpiece 8 to be processed next is pushed into the processing area, and the workpiece whose processing is completed in the processing area is pushed into the feeding chute 62). The feeding and discharging of the workpiece 8 are automatically completed by the feeding and discharging mechanism, and the automation degree is high. The cold rolling machine tool adopts a vertical structure, utilizes vertical space, greatly reduces the occupied area of equipment, and can be suitable for processing workpieces with the outer diameter of 250mm-400 mm.

The cold rolling machine is provided with the roundness roller assembly 4, and the roller 44 of the roundness roller assembly 4 always exerts proper correction force on the workpiece 8 under the control of the servo motor 41, the rolling guide rail 42 and the ball screw 43 so as to ensure the roundness precision of the workpiece. The correction force is proper, the circle repairing effect is not good when the correction force is too small, and the rolling force performance parameter is deteriorated when the correction force is too large, so that the position of the workpiece is accurately controlled by a pre-programmed program along with the increase of the size of the workpiece.

The main slide block 52 of the support wheel assembly 5 is guided by the slide block guide rail 54, and under the pushing of the main oil cylinder 51, the support wheel 53 is driven to press the mandrel 34, and then the mandrel 34 presses the workpiece 8, thereby completing the rolling process. The rolling force is very large, and is 500 plus 1500KN, and the feeding speed is changed in a very large range (0.01-20 mm/s) so as to adapt to the requirements of different stages of fast feeding, rough rolling, fine rolling and the like. Wherein, the fast forward and fast backward actions are supplied by a hydraulic pump, and the rolling stage is supplied by a high-pressure small-flow pump driven by a servo motor.

The cold rolling machine tool is also provided with a measuring mechanism 7, the size of the workpiece can be measured through a grating ruler 74 on the measuring mechanism 7 and fed back to an electric control system, and the electric control system adjusts feeding parameters in time according to the change of the size until the rolling process is completed.

While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by one skilled in the art without departing from the scope of the present invention.

Claims

1. Vertical cold rolling machine tool, including base (1), characterized by: the grinding machine is characterized in that two racks (11) are vertically arranged on the base (1), rectangular square holes (11a) are respectively formed in the two racks (11), a grinding wheel shaft assembly (2) is assembled at the lower part of each rectangular square hole (11a), each grinding wheel shaft assembly (2) comprises a reduction motor (21) and a grinding wheel (22) which are connected and driven, a mandrel assembly (3) is fixed on the side surface of each rack (11) above the grinding wheel shaft assembly (2), each mandrel assembly (3) comprises mounting seats (32) of which two sides are assembled on vertical guide rails (31), an oil cylinder (33) is arranged between the mounting seats (32), a piston rod (33a) of each oil cylinder (33) is connected with a mandrel (34), a roundness roller assembly (4) used for ensuring the roundness precision of a workpiece is fixed on each rack (11), and a support wheel assembly (5) is arranged on each rack (11) above the mandrel assembly (3), the supporting wheel assembly (5) comprises a main sliding block (52) driven by a main oil cylinder (51), a supporting wheel (53) is arranged on the main sliding block (52), a feeding and discharging mechanism is further arranged on the rack (11), and the feeding and discharging mechanism comprises a feeding slide way (61), a discharging slide way (62) and a material claw (63).

2. The vertical cold rolling machine tool of claim 1, wherein: the speed reducing motor (21) is connected with the rolling wheel (22) through a coupling (23) for transmission; the rolling axle assembly (2) further comprises a first bearing seat (24) and a second bearing seat (25), and the first bearing seat (24) and the second bearing seat (25) are mounted on the lower portion of the rectangular square hole (11a) of the corresponding rack (11).

3. The vertical cold rolling machine tool of claim 2, wherein: horizontal guide rails (35) are arranged between the mandrel (34) and the mounting seats (32) on two sides respectively, the bottoms of the mounting seats (32) are provided with reset rods (36) respectively, and the upper ends of the reset rods (36) are connected with reset springs (36 a).

4. The vertical cold rolling machine tool of claim 3, wherein: the roundness roller assembly (4) comprises a servo motor (41), a rolling guide rail (42), a ball screw (43) and a roller (44), wherein the ball screw (43) is arranged on the rolling guide rail (42) and is connected with the servo motor (41) for transmission, a bracket (45) is fixed at the front end of the ball screw (43), and the roller (44) is assembled at the front end of the bracket (45).

5. The vertical cold rolling machine tool of claim 4, wherein: supports (55) are fixed on two sides of the main sliding block (52), supporting wheels (53) are respectively arranged on the supports (55), and the two supporting wheels (53) are arranged on two sides of a workpiece; the supporting wheel (53) is a thick-wall rolling bearing fully filled with rollers.

6. The vertical cold rolling machine tool of claim 5, wherein: the main sliding block (52) is assembled on a sliding block guide rail (54) which is vertically arranged.

7. The vertical cold rolling machine tool of claim 6, wherein: the tail of material loading slide (61) be provided with horizontal push cylinder (64), material claw (63) set up in afterbody one side of material loading slide (61), material loading slide (61) other material claw side parallel arrangement push cylinder (65).

8. The vertical cold rolling machine tool of claim 7, wherein: a feeding slide base body (61a) is arranged at the bottom of the feeding slide (61), and the feeding slide base body (61a) is fixed with the rack (11); the bottom of unloading slide (62) be provided with unloading slide base member (62a), unloading slide base member (62a) fixed mutually with frame (11).

9. The vertical cold rolling machine tool of claim 8, wherein: the bottom of the feeding slide way (61) is provided with an adjusting block (61b), and an adjusting groove (61c) is arranged on the adjusting block (61 b).

10. The vertical cold rolling machine tool of claim 9, wherein: the frame (11) on still be provided with measuring mechanism (7), measuring mechanism (7) including with frame (11) fixed measuring mechanism base member (71), measuring mechanism base member (71) on be provided with measurement guide rail (72) and the measuring slider (73) of looks adaptation, measuring slider (73) on be fixed with grating chi (74).