CN109290373B - CNC rolling mill - Google Patents

Abstract

The invention discloses a numerical control rolling mill, which comprises a frame, an upper roller assembly, a lower roller assembly and a roller spacing adjusting assembly, wherein the upper roller assembly comprises an upper roller, an upper roller shaft and an upper roller synchronous gear; the lower roller assembly comprises a lower roller, a lower roller shaft and a lower roller synchronous gear, wherein the lower roller and the lower roller synchronous gear are both fixed on the lower roller shaft, and the upper roller synchronous gear is meshed with the lower roller synchronous gear to synchronously rotate; the roll gap adjusting assembly comprises an upper roll lifting mechanism and an upper roll lifting mechanism driving device, and the upper roll lifting mechanism driving device drives the upper roll lifting mechanism to adjust the distance between the upper roll and the lower roll. The numerical control rolling mill has the advantages of high automation degree, high production efficiency and wide application range.

Description

CNC rolling mill

technical field

The invention relates to the technical field of blade rolling, in particular to a numerically controlled rolling mill.

Background technique

A rolling mill is a mechanical device that rolls metal and makes the metal plastically deformed. A rolling mill for rolling a blade generally includes a frame, an upper roll and a lower rolling roll, wherein the upper rolling roll and the lower rolling roll are all arranged on the frame.

The traditional Chinese knife blank is thicker on the top (back) and thinner on the bottom (blade). When the current rolling mill rolls the knife blank, within the width of the knife blank (blade to back), the upper roll and the lower roll are adjusted by adjusting the roll distance ( The axial distance between the upper roll and the lower roll remains unchanged, and the rolling is completed by changing the shape of the upper roll and the lower roll to make the roll distance first small and then large). Different blade materials and blade temperatures correspond to different roll speeds. The current common rolling mills for knife blanks mainly have the following problems:

1. When the axial distance between the upper roll and the lower roll cannot be adjusted, each type of knife blank must correspond to a set of upper roll and lower roll, which has the disadvantage of low application range. When rolling different knife blanks, it is necessary to replace the corresponding one. The upper and lower rolls are time-consuming and labor-intensive, and the degree of automation is low, resulting in low production efficiency;

2. It is difficult for the upper roll and the lower rolling roll to rotate synchronously, which leads to the bending of the rolled knife blank, and the height and thickness of the knife blank do not correspond; and at present, when many rolling mills roll the knife blank, the slope of the knife blank must be manually adjusted dynamically, which is labor-intensive. High, low production efficiency, poor product consistency, and increased difficulty for subsequent processes;

3. The upper roll or the lower rolling roll has no power, and generally there is only one kind of power (motor drive or hydraulic drive), and some rolling mills use a combination of motor, belt and reducer. The motor drives the reducer through the belt. The belt between the reducers is easy to slip, which will also lead to low machining accuracy of the knife blank.

Contents of the invention

In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a numerically controlled rolling mill, which expands the scope of application and improves production efficiency and machining accuracy of parts.

To achieve the above object, the technical scheme adopted in the present invention is as follows:

A numerically controlled rolling mill, comprising a frame, an upper roll assembly and a lower roll assembly, the upper roll assembly and the lower roll assembly are all arranged on the frame; the upper roll assembly includes an upper roll, an upper roll shaft, an upper roll The synchronous gear and the upper roll shaft driving device, the upper roll shaft driving device drives the upper roll shaft to rotate, the upper roll shaft includes a lifting rotating shaft and a fixed rotating shaft, and the fixed rotating shaft and the lifting rotating shaft are connected by a floating coupling The upper roller is fixed on the lifting rotating shaft, and the upper roller synchronous gear is fixed on the fixed rotating shaft; the lower roller assembly includes the lower roller, the lower roller shaft, the lower roller synchronous gear and the lower roller shaft driving device, the lower roll shaft driving device drives the lower roll shaft to rotate, the lower roll and the lower roll synchronous gear are fixed on the lower roll shaft, and the upper roll synchronous gear meshes with the lower roll synchronous gear to rotate synchronously; it also includes roll distance adjustment Assemblies, the roller gap adjustment assembly includes an upper roller lifting mechanism and an upper roller lifting mechanism driving device, and the upper roller lifting mechanism driving device drives the upper roller lifting mechanism to adjust the distance between the upper roller and the lower roller.

The CNC rolling mill can drive the upper roll lifting mechanism to adjust the axial distance between the upper roll and the lower roll through the driving device of the upper roll lifting mechanism. The rolling surface has a slope, which can be continuously rotated and rolled, and can also be rolled back and forth in sections, which improves work efficiency, saves energy and reduces emissions. This rolling mill adopts numerical control technology and is controlled by an electronic control device. Therefore, this rolling mill can not only process parts with various thicknesses, but also has a wide range of applications, and has a high degree of automation, high production efficiency, and reduces the labor load of workers; in this CNC rolling mill, both the upper and lower roll shafts are equipped with The driving device has a strong driving force. The synchronous gear of the upper roll and the synchronous gear of the lower roll keep meshing so that the upper roll and the lower roll form a rigid synchronous rotation, so as to ensure that the speed of the upper roll and the lower roll reaches the same speed. The upper roll moves up and down through the floating coupling Torque transmission by the torque converter does not affect the meshing transmission between the synchronous gear of the upper roll and the synchronous gear of the lower roll, and the precision of the processed parts is improved.

Further, the upper roll shaft driving device includes an upper roll driving motor, an upper roll reducer and an upper roll swing hydraulic cylinder, and the upper roll driving motor drives the fixed rotating shaft along the axis at the right end of the fixed rotating shaft through the upper roll reducer Rotate, the upper roll swing hydraulic cylinder drives the lift rotary shaft to rotate along the axis at the left end of the lift rotary shaft; the lower roll shaft driving device includes a lower roll drive motor, a lower roll reducer and a lower roll swing hydraulic cylinder, and the lower roll drives The motor drives the lower roll shaft to rotate along the axis at the right end of the lower roll shaft through the lower roll reducer, and the lower roll swing hydraulic cylinder drives the lower roll shaft to rotate along the axis at the left end of the lower roll shaft. The CNC rolling mill is equipped with driving points at both ends of the upper roll and the lower roll, and adopts the combination of motor drive and swing hydraulic cylinder drive, which fully combines the advantages of hydraulic drive and motor drive, and improves the efficiency compared with the existing technology. Pressing force and pressing speed.

Further, the swing angles of the upper roll swing hydraulic cylinder and the lower roll swing hydraulic cylinder are both 360 degrees.

Further, the frame includes a bottom plate, a left side plate and a right side plate, the left side plate and the right side plate are fixed on the bottom plate, the upper roll and the lower roll are located between the left side plate and the right side plate, The lower roll shafts on both sides of the lower roll are rotatably connected with the left side plate and the right side plate respectively.

Further, a synchronous gear installation chamber is provided on the right side of the right side plate, and the upper roller synchronous gear and the lower roller synchronous gear are both located in the synchronous gear installation chamber. Both the upper roll synchronous gear and the lower roll synchronous gear are located in the synchronous gear installation cavity, which is beneficial to protect the gears and increase the service life of the gears.

Further, the bottom plate is in the shape of a cuboid, and anchor bolt holes are provided near the four corners of the bottom plate. The setting of anchor bolt holes is convenient for fixing the rack.

Further, the upper roll lifting mechanism includes a central gear, a rack, a left screw adjusting screw, a left end roll spacing adjusting screw, a left screw nut type slider, a right screw adjusting gear, a right rolling spacing adjusting screw and Right screw nut type slider; the left screw nut type slider is vertically slidably connected to the left side plate, and the right screw nut type slider is vertically slidably connected to the right side plate, The upper parts of the left screw nut type slider and the right screw nut type slider are provided with screw connecting holes with upward openings; The block is connected in rotation; the left end roller distance adjustment screw rod is connected to the frame on the upper side of the left sliding groove in a vertical direction, and the left screw rod adjustment gear is fixed on the top of the left end roller distance adjustment screw rod. The lower end of the left end roller distance adjustment screw rod is connected in the screw rod connection hole of the left screw mandrel nut type slider; Above, the right screw mandrel adjustment gear is fixed on the top of the right end roll distance adjustment screw mandrel, and the lower end of the right end roll distance adjustment screw mandrel is connected in the screw mandrel connecting hole of the right screw mandrel nut type slider; Linear movement, the left and right parts of the rack mesh with the left screw adjusting gear and the right screw adjusting gear respectively, the middle part of the rack meshes with the central gear, and the central gear drives the rack through the left end roller distance adjustment screw rod and the right end roller distance adjustment The screw mandrel drives the left screw nut type slider and the right screw nut type slider to lift synchronously. The upper roller lifting mechanism makes the left screw nut type slider and the right screw nut type slider move up and down synchronously, which increases the thickness range of the pressing parts without affecting the pressing accuracy.

Further, the left side plate is vertically provided with a left sliding groove, the left screw nut type slider is adapted to the left sliding groove and slidably connected in the left sliding groove, and the right side plate is vertically arranged There is a right sliding groove, and the right screw nut type slide block is matched with the right sliding groove and is slidably connected in the right sliding groove. On the premise that the left side plate and the right side plate are thick enough, slide grooves are set on the left side plate and the right side plate, and the left screw nut type slider and the right screw nut type slider are respectively connected to the left sliding groove And in the right sliding groove, the left screw nut type slider and the right screw nut type slider are in good stress state, and the connection is stable, which is convenient for connecting the lifting rotating shaft, so that the radial force of the lifting rotating shaft is better, and the precision of the rolling mill is improved. Higher, easy to process high-precision parts.

Further, the driving device of the upper roll lifting mechanism includes a screw drive motor and a screw drive reducer, and the screw drive motor drives the central gear to rotate through the screw drive reducer. In the driving device of the upper roll lifting mechanism, the upper roll lifting mechanism is driven by the screw drive motor and the screw drive reducer, which has high precision and high degree of automation.

Further, the frame further includes an upper side plate, and the screw drive motor, the screw drive reducer and the sun gear are all arranged on the upper side plate.

Compared with the prior art, the beneficial effects of the present invention are mainly reflected in:

1. This CNC rolling mill can drive the upper roller lifting mechanism to adjust the axial distance between the upper roller and the lower roller through the driving device of the upper roller lifting mechanism. During processing, the axial distance between the upper roller and the lower roller can be changed and adjusted to realize automatic rolling of the knife blank and The rolling surface of the blade has a slope, which can be continuously rotated and rolled, and can also be rolled back and forth in sections, which improves work efficiency, saves energy and reduces emissions. This rolling mill adopts numerical control technology and is controlled by an electric control device. The thickness and width of the billet are coordinated. Therefore, this rolling mill can not only process parts with various thicknesses, but also has a wide range of applications, and has a high degree of automation, high production efficiency, and reduces the labor load of workers; It is equipped with a driving device with strong driving force. The synchronous gear of the upper roll and the synchronous gear of the lower roll keep meshing so that the upper roll and the lower roll form a rigid synchronous rotation to ensure that the speed of the upper roll and the lower roll reaches the same speed. The torque transmitted by the coupling does not affect the meshing transmission between the synchronous gear of the upper roll and the synchronous gear of the lower roll, and the precision of the processed parts is improved;

2. The CNC rolling mill is equipped with driving points at both ends of the upper roll and the lower roll, and adopts a combination of motor drive and swing hydraulic cylinder drive. Both the motor drive and swing hydraulic cylinder drive adopt numerical control technology (the hydraulic cylinder adopts numerical Hydraulic servo drive), the hydraulic system can flexibly absorb the asynchronous motion interference between the electric and hydraulic transmissions that may be brought about, the power can be matched according to the type of parts, materials, heating temperature, and power requirements, and intelligent software is used to adjust and control; the motor drive can Realize continuous transmission of numerical control electric power to achieve precise and continuous crimping; single use of swing hydraulic cylinder drive can realize swing crimping, when the motor and swing hydraulic cylinder work at the same time, it has higher pressure Compared with motor drive alone, it has higher pressing force and faster pressing speed;

3. Both the upper roller synchronous gear and the lower roller synchronous gear are located in the synchronous gear installation cavity, which is beneficial to protect the gears and increase the service life of the gears;

4. The upper roller lifting mechanism makes the left screw nut type slider and the right screw nut type slider move up and down synchronously, which increases the thickness range of the pressing parts without affecting the pressing accuracy; the wire of the driving device of the upper roller lifting mechanism The rod drive motor is controlled by numerical control technology, with high precision and high degree of automation, which reduces labor load and improves production efficiency.

Description of drawings

Fig. 1 is the structural representation of the numerically controlled rolling mill of the embodiment of the present invention;

Fig. 2 is a schematic top view of a numerically controlled rolling mill according to an embodiment of the present invention.

In the accompanying drawings, 1-frame; 2-upper roll assembly; 3-lower roll assembly; 4-roll distance adjustment assembly;

11-bottom plate; 12-left side plate; 13-right side plate; 14-upper side plate; 15-synchronous gear installation cavity; 21-upper roller; 22-upper roller shaft; 23-upper roller synchronous gear; 24-upper Roll drive motor; 25-upper roll reducer; 26-upper roll swing hydraulic cylinder; 31-lower roll; 32-lower roll shaft; 33-lower roll synchronous gear; 34-lower roll drive motor; 35-lower roll reducer ;36-lower roll swing hydraulic cylinder; 41-central gear; 42-rack; 43-left screw adjustment gear; 44-right screw adjustment gear; 45-left end roll distance adjustment screw; 46-right end roll distance adjustment Screw rod; 47-left screw nut type slider; 48-right screw nut type slider; 49-upper roll lifting mechanism driving device;

111-anchor bolt hole; 221-lifting rotating shaft; 222-fixing rotating shaft; 223-floating coupling; 491-screw driving motor; 492-screw driving reducer.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 and 2, the numerically controlled rolling mill of this embodiment has a frame 1, an upper roll assembly 2, a lower roll assembly 3 and a roll gap adjustment assembly 4, and the above-mentioned upper roll assembly 2, the lower roll assembly 3 and The roller gap adjustment components 4 are all arranged on the frame 1 and are all controlled by the electric control device to complete the action.

As shown in Figure 1, in the present embodiment, the upper roller assembly 2 includes an upper roller 21, an upper roller shaft 22, an upper roller synchronous gear 23 and an upper roller shaft driving device, wherein the upper roller shaft driving device drives the upper roller shaft 22 to rotate, The upper roller shaft 22 includes a lifting rotating shaft 221 and a fixed rotating shaft 222. The fixed rotating shaft 221 and the lifting rotating shaft 222 are connected by a floating coupling 223. The upper roller 21 is fixed on the lifting rotating shaft 221. The upper roller synchronous gear 23 It is fixed on the fixed rotating shaft 222 .

As shown in Figure 1, in the present embodiment, the lower roll assembly 3 includes a lower roll 31, a lower roll shaft 32, a lower roll synchronous gear 33 and a lower roll shaft driving device, wherein the lower roll shaft driving device drives the lower roll shaft 32 to rotate, The lower roll 31 and the lower roll synchronous gear 33 are all fixed on the lower roll shaft 32, and the upper roll synchronous gear 23 meshes with the lower roll synchronous gear 33 to rotate synchronously. In this CNC rolling mill, the upper roll synchronous gear 23 and the lower roll synchronous gear 33 keep meshing so that the upper roll 21 and the lower roll 31 form a rigid synchronous rotation, so as to ensure that the upper roll 21 and the lower roll 31 rotate at the same speed, and the upper roll 21 moves up and down. Finally, the torque is transmitted through the floating coupling 223, which does not affect the meshing transmission between the upper roll synchronous gear 23 and the lower roll synchronous gear 33, and the precision of the processed parts is improved.

As shown in Figures 1 and 2, in this embodiment, the upper roll shaft driving device includes an upper roll drive motor 24, an upper roll reducer 25 and an upper roll swing hydraulic cylinder 26, and the upper roll drive motor 24 passes through the upper roll reducer 25 The fixed rotating shaft 222 is driven to rotate along the axis at the right end of the fixed rotating shaft 222, and the upper roll swing hydraulic cylinder 26 drives the lifting rotating shaft 221 to rotate along the axis at the left end of the lifting rotating shaft 221; the lower roll shaft driving device includes a lower roll driving motor 34, The lower roll reducer 35 and the lower roll swing hydraulic cylinder 36, the lower roll drive motor 34 drives the lower roll shaft 32 to rotate along the axis through the lower roll reducer 35 at the right end of the lower roll shaft 32, and the lower roll swing hydraulic cylinder 36 is at the left end of the lower roll shaft 32 The part drives the lower roller shaft 32 to rotate along the axis. In this embodiment, the swing angles of the upper roll swing hydraulic cylinder 26 and the lower roll swing hydraulic cylinder 36 are both 360 degrees. In practical applications, the swing angles of the upper roll swing hydraulic cylinder 26 and the lower roll swing hydraulic cylinder 36 are adjusted according to actual needs. .

As shown in Figures 1 and 2, in this embodiment, the numerical control rolling mill is provided with driving points at both ends of the upper roll 21 and the lower roll 31, and adopts a combination of motor drive and swing hydraulic cylinder drive, and the motor drive Both the drive and swing hydraulic cylinder adopt numerical control technology (hydraulic cylinder adopts numerical control hydraulic servo drive), and the hydraulic system can flexibly absorb possible asynchronous movement interference between electric and hydraulic transmission. The power can be adjusted according to the type of parts, materials, heating temperature, The power demand is matched, and the intelligent software is used to adjust and control; the motor drive can realize the continuous transmission of numerical control electric power to achieve precise and continuous pressing; the single use of the swing hydraulic cylinder drive can realize the swing pressing, when the motor and the swing hydraulic cylinder work at the same time, Compared with the single use of the swing hydraulic cylinder drive, it has higher pressing force, faster pressing speed and higher pressing accuracy. Compared with the single use of motor drive, it has higher pressing force and faster pressing. Rolling speed, when the CNC rolling mill rolls the parts blank, there are mainly the following methods:

1. Heavy-duty rolling: the upper roll swing hydraulic cylinder 26, the lower roll swing hydraulic cylinder 36, the upper roll drive motor 24, and the lower roll drive motor 34 all operate, and the four drive points simultaneously drive the upper roll 21 and the lower roll 31 pairs of parts High-speed rolling, at this time, the output power of the rolling mill is the largest, and the maximum rolling force, rolling speed and high rolling precision can be obtained.

2. Medium-load rolling: the lower roll swing hydraulic cylinder 36 and the lower roll drive motor 34 operate simultaneously, and the two driving points form an electro-hydraulic composite drive to drive the lower roll 31. At this time, the upper roll 21 is synchronized with the upper roll due to the lower roll synchronous gear 33 The gears 23 mesh and rotate synchronously to roll parts at high speed, and the rolling mill can obtain larger rolling force, rolling speed and higher rolling accuracy, and the output power is larger.

3. Small-load rolling: the lower roll swing hydraulic cylinder 36 operates independently to drive the lower roll 31. At this time, the upper roll 21 rotates synchronously due to the meshing of the lower roll synchronous gear 33 and the upper roll synchronous gear 23. This method is mainly for small-load parts rolling. system.

4. Small-load continuous rolling: the lower roll drive motor 34 drives the lower roll 31 independently through existing numerical control technology control. At this time, the upper roll 21 rotates synchronously due to the meshing of the lower roll synchronous gear 33 and the upper roll synchronous gear 23. The method is mainly aimed at the rolling of parts with small load and high precision, and can realize continuous rolling.

As shown in Fig. 1 and Fig. 2, in the present embodiment, frame 1 comprises bottom plate 11, left side plate 12 and right side plate 23, and left side plate 12 and right side plate 13 are all fixed on the bottom plate 11, and upper roll 21 and the lower roll 31 are all located between the left side plate 12 and the right side plate 13 , and the lower roll shafts 32 on both sides of the lower roll 31 are rotatably connected with the left side plate 12 and the right side plate 13 respectively. In this embodiment, the bottom plate 11 is in the shape of a cuboid. In order to facilitate the fixing of the frame 1, anchor bolt holes 111 are provided near the four corners of the bottom plate 11; That's it.

As shown in Figure 1, in order to protect the upper roll synchronous gear 23 and the lower roll synchronous gear 33 and increase the service life of the upper roll synchronous gear 23 and the lower roll synchronous gear 33, in this embodiment, the right side of the right side plate 13 is provided with a synchronous The gear installation chamber 15, the upper roller synchronous gear 23 and the lower roller synchronous gear 33 are all located in the synchronous gear installation chamber 15.

As shown in Figures 1 and 2, in this embodiment, the roll gap adjustment assembly 4 includes an upper roller lifting mechanism and an upper roller lifting mechanism driving device 49, and the upper roller lifting mechanism driving device 49 drives the upper roller lifting mechanism to adjust the upper roller 21 and the upper roller lifting mechanism. The lower rollers have 31 pitches. The upper roller lifting mechanism includes a central gear 41, a rack 42, a left screw adjusting gear 43, a left end roll distance adjusting screw 45, a left screw nut type slider 47, a right screw adjusting gear 44, and a right end roll spacing adjusting screw 46 and the right screw nut formula slide block 48; 13, the top of the left screw nut formula slide block 47 and the right screw nut formula slide block 48 are all provided with the screw mandrel connecting holes with opening upwards and the same specification; The slide block 47 is connected with the right screw nut type slide block 48 in rotation, and the upper roll swing hydraulic cylinder 26 is fixed on the left screw nut type slide block 47 and rises and falls synchronously with the left screw nut type slide block 47; Rod 45 is connected to the frame 1 on the upper side of the left sliding groove in a vertical direction, the left screw mandrel adjustment gear 43 is fixed on the top of the left end roll distance adjustment screw mandrel 45, and the lower end of the left end roll distance adjustment screw mandrel 45 Be connected in the screw mandrel connection hole of left screw mandrel nut type slide block 47, the right-hand roll distance adjustment screw mandrel 46 is connected on the frame 1 on the upper side of the right sliding groove in the vertical direction rotation, right screw mandrel adjustment gear 44 It is fixed on the top of the right-end roller distance adjusting screw rod 46, and the lower end of the right-end roller distance adjusting screw rod 46 is connected in the screw mandrel connection hole of the right screw mandrel nut type slide block 48, and the left end roller distance adjusting screw rod 45 and the right end roller distance Adjusting screw mandrel 46 is all compatible with screw mandrel connecting hole; Rack 42 moves along a straight line, and the left and right two parts of rack 42 mesh with left screw mandrel adjusting gear 43 and right screw mandrel adjusting gear 44 respectively, and the middle part of rack 42 is in contact with the center. Gear 41 meshes, and central gear 41 drives tooth bar 42 to drive left screw mandrel nut formula slide block 47 and right screw mandrel nut formula slide block 47 synchronous lifts by left end roll spacing adjustment screw mandrel 44 and right end roll spacing adjustment screw mandrel 45.

As shown in Figures 1 and 2, in this embodiment, in order to make the left screw nut type slider 47 and the right screw nut type slider 48 in a better stressed state, they are connected with the left side plate 12 and the right side plate 13 Stable, easy to connect the lifting rotating shaft 221, and make the radial force of the lifting rotating shaft 221 better, so that the precision of the rolling mill is higher, and high-precision parts are processed. The specific scheme is as follows: on the left side plate 12 and the right side plate 13 Under the premise of sufficient thickness, sliding grooves are provided on the left side plate 12 and the right side plate 13, the left side plate 12 is vertically provided with a left sliding groove, and the left screw nut type slider 47 is compatible with the left sliding groove And slidably connected in the left sliding groove, the right side plate 13 is vertically provided with the right sliding groove, and the right screw nut type slide block 48 is matched with the right sliding groove and is slidably connected in the right sliding groove. Between the left screw nut type slide block 47 and the left slide groove, between the right screw nut type slide block 48 and the right slide groove, all can be connected by a linear guide rail, and also can be on the left side plate 12 and the right side plate 13 itself. Directly process the track or chute, process the chute or track and the track or chute of the left side plate 12 and the right side plate 13 on the left screw nut type slide block 47 and the left screw nut type slide block 48 themselves cooperation. In practical applications, the left screw nut type slider 47 can be connected to the inside or outside of the left side plate 12, and the right screw nut type slider 48 can also be connected to the inside or outside of the right side plate 13, as long as it does not affect the installation and Just use it.

As shown in Figures 1 and 2, in this embodiment, the numerical control rolling mill can drive the upper roll lifting mechanism through the upper roll lifting mechanism driving device 49 to adjust the distance between the upper roll 21 and the lower roll 31, not only can process parts of various thicknesses, It has a wide range of applications, and has a high degree of automation, high production efficiency, and reduces the labor load of workers. In this embodiment, the rack 32 has a limit mechanism to ensure that the rack 32 moves along a straight line. The limit mechanism of the rack 32 can be provided with a guide chute (the rack moves linearly along the guide chute) or a linear guide rail (the linear guide rail is fixed On the frame, the rack is fixed on the slider of the linear guide rail and moves along the linear guide rail), as long as it does not affect the installation and use. In the present embodiment, the left screw mandrel adjustment gear 43 and the right screw mandrel adjustment gear 44, the left end roll distance adjustment screw mandrel 45 and the right end roll distance adjustment screw mandrel 46, the left screw mandrel nut type slider 47 and the right screw mandrel nut type slider The specification of piece 48 is all identical, guarantees that left screw mandrel nut formula slide block 47 and right screw mandrel nut formula slide block 48 synchronous lifting.

As shown in FIG. 1 and FIG. 2 , in this embodiment, the frame 1 further includes an upper side plate 14 on which the limiting mechanism of the rack 32 is fixed.

As shown in Figures 1 and 2, in this embodiment, the driving device 49 of the upper roll lifting mechanism includes a screw driving motor 491 and a screw driving reducer 492, and the screw driving motor 492 drives the central gear 41 through the screw driving reducer 493 turn. Screw drive motor 491 , screw drive reducer 492 and center gear 41 wheels are all arranged on upper side plate 14 . The screw drive motor 491 is controlled by the existing numerical control technology to adjust the roll distance of the upper roll 21 and the lower roll 31, and adapts to the rolling of parts with different thickness and width through interpolation motion; in practical applications, the upper roll lifting mechanism driving device 49 also Other driving methods can be used, such as hydraulic driving, as long as the installation and use are not affected.

The CNC rolling mill controls the speed and distance of the rolls by the electronic control device, realizes high-precision positioning and feeding through the automatic feeding mechanism, adapts to repeated rolling and continuous rolling processes, and can adapt to the processing needs of various parts. It is subversive in this industry. It changes the status quo of the product, has high cost performance, saves manpower, and reduces the technological process of the subsequent process.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the applicant has described the present invention in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technology of the present invention Any modification or equivalent replacement of the technical solution without departing from the spirit and scope of the technical solution shall be covered by the scope of the claims of the present invention.

Claims (4)

1. The numerical control rolling mill comprises a frame, an upper roller assembly and a lower roller assembly, wherein the upper roller assembly and the lower roller assembly are arranged on the frame; the method is characterized in that:

the upper roller assembly comprises an upper roller, an upper roller shaft, an upper roller synchronous gear and an upper roller shaft driving device, wherein the upper roller shaft driving device drives the upper roller shaft to rotate, the upper roller shaft comprises a lifting rotating shaft and a fixed rotating shaft, the fixed rotating shaft is connected with the lifting rotating shaft through a floating coupling, the upper roller is fixed on the lifting rotating shaft, and the upper roller synchronous gear is fixed on the fixed rotating shaft;

the lower roller assembly comprises a lower roller, a lower roller shaft, a lower roller synchronizing gear and a lower roller shaft driving device, the lower roller shaft driving device drives the lower roller shaft to rotate, the lower roller and the lower roller synchronizing gear are both fixed on the lower roller shaft, and the upper roller synchronizing gear is meshed with the lower roller synchronizing gear to synchronously rotate;

the device comprises a roller spacing adjusting assembly, a roller spacing adjusting device and a roller spacing adjusting device, wherein the roller spacing adjusting assembly comprises an upper roller lifting mechanism and an upper roller lifting mechanism driving device, and the upper roller lifting mechanism driving device drives the upper roller lifting mechanism to adjust the distance between an upper roller and a lower roller;

the upper roller shaft driving device comprises an upper roller driving motor, an upper roller speed reducer and an upper roller swinging hydraulic cylinder, wherein the upper roller driving motor drives the fixed rotating shaft to rotate along the axis through the upper roller speed reducer at the right end part of the fixed rotating shaft, and the upper roller swinging hydraulic cylinder drives the lifting rotating shaft to rotate along the axis at the left end part of the lifting rotating shaft; the lower roller shaft driving device comprises a lower roller driving motor, a lower roller reducer and a lower roller swinging hydraulic cylinder, wherein the lower roller driving motor drives a lower roller shaft to rotate along an axis through the lower roller reducer at the right end part of a lower roller shaft, and the lower roller swinging hydraulic cylinder drives the lower roller shaft to rotate along the axis at the left end part of the lower roller shaft;

the swing angles of the upper roller swing hydraulic cylinder and the lower roller swing hydraulic cylinder are 360 degrees;

the machine frame comprises a bottom plate, a left side plate and a right side plate, wherein the left side plate and the right side plate are both fixed on the bottom plate, an upper roller and a lower roller are both positioned between the left side plate and the right side plate, and lower roller shafts on two sides of the lower roller are respectively and rotatably connected with the left side plate and the right side plate;

the right side of the right side plate is provided with a synchronous gear mounting cavity, and the upper roller synchronous gear and the lower roller synchronous gear are both positioned in the synchronous gear mounting cavity;

the bottom plate is cuboid, and foundation bolt holes are formed in the bottom plate near four corners;

the upper roller lifting mechanism comprises a central gear, a rack, a left screw rod adjusting gear, a left end roller spacing adjusting screw rod, a left screw rod nut type sliding block, a right screw rod adjusting gear, a right end roller spacing adjusting screw rod and a right screw rod nut type sliding block; the left screw rod nut type sliding block is vertically and slidingly connected to the left side plate, the right screw rod nut type sliding block is vertically and slidingly connected to the right side plate, and screw rod connecting holes with upward openings are formed in the upper parts of the left screw rod nut type sliding block and the right screw rod nut type sliding block; two ends of the lifting rotating shaft are respectively and rotatably connected with the left screw nut type sliding block and the right screw nut type sliding block; the left end roll gap adjusting screw rod is rotationally connected to the frame at the upper side of the left sliding groove in the vertical direction, the left screw rod adjusting gear is fixed at the upper part of the left end roll gap adjusting screw rod, and the lower end part of the left end roll gap adjusting screw rod is connected to the screw rod connecting hole of the left screw rod nut type sliding block; the right-end roll gap adjusting screw rod is rotationally connected to the frame at the upper side of the right sliding groove in the vertical direction, the right-end roll gap adjusting gear is fixed at the upper part of the right-end roll gap adjusting screw rod, and the lower end part of the right-end roll gap adjusting screw rod is connected to the screw rod connecting hole of the right-end screw rod nut type sliding block; the left and right parts of the rack are respectively meshed with the left screw rod adjusting gear and the right screw rod adjusting gear, the middle part of the rack is meshed with the central gear, and the central gear drives the rack to drive the left screw rod nut type sliding block and the right screw rod nut type sliding block to synchronously lift through the left end roll gap adjusting screw rod and the right end roll gap adjusting screw rod.

2. The digitally controlled rolling mill of claim 1 wherein: the left side board is provided with left sliding groove along vertical, left lead screw nut formula slider and left sliding groove looks adaptation and slidingly connect in left sliding groove, the right side board is provided with right sliding groove along vertical, right lead screw nut formula slider and right sliding groove looks adaptation and slidingly connect in right sliding groove.

3. The digitally controlled rolling mill of claim 1 wherein: the upper roller lifting mechanism driving device comprises a screw rod driving motor and a screw rod driving speed reducer, and the screw rod driving motor drives the central gear to rotate through the screw rod driving speed reducer.

4. A digitally controlled rolling mill according to claim 3 wherein: the frame also comprises an upper side plate, and the screw rod driving motor, the screw rod driving speed reducer and the central gear are all arranged on the upper side plate.