Novel vertical lathe beam lifting lead screw nut structure

Abstract

The utility model relates to the technical field of mechanical transmission, and discloses a novel vertical lathe beam lifting lead screw nut structure which comprises a lifting box body, a lifting lead screw, a stand column, a travel switch, a flange plate, a nut seat, a copper nut, a gland, a shaft sleeve, a thrust cylindrical roller bearing and a beam. The lifting lead screw penetrates through the lifting box and extends to the lower portion, the stand columns are located on the two sides of the lifting lead screw and connected with the lifting box and the cross beam, the travel switches are installed on the stand columns, and the flange plates are located in the middles of the stand columns. Rotational motion is converted into linear motion through precise matching of the lifting lead screw and the copper nut, the transmission efficiency reaches 95% or above, the lifting precision is controlled within the range of + / -0.1 mm, the perpendicularity deviation in the lifting process does not exceed 0.05 degree through the synergistic effect of the stand column, the flange plate, the nut base and other components, and the overall stability is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical drive technical field, concretely is a novel vertical lathe beam lifting screw rod nut structure. BACKGROUND

[0002] Vertical lathe plays an important role in many industries such as shipbuilding, aerospace, energy, heavy machinery manufacturing. In the shipbuilding industry, it is used for processing large marine propellers, and its high-precision processing capability provides guarantee for the efficient operation of ships. In the energy field, it can be used to process large generator rotors, stators and other parts. In the heavy machinery manufacturing industry, it can meet the processing needs of large mining equipment, metallurgical equipment and other parts, and promote the technological progress and development of these industries.

[0003] As an important processing equipment, vertical lathe needs to run stably for a long time. Screw nut structure has mature design and manufacturing process after long-term practice and improvement, which can maintain good performance in harsh working environment. By selecting appropriate materials, surface treatment and optimizing structure design, the wear resistance, corrosion resistance and fatigue strength of screw nut can be improved, the service life can be prolonged, and the maintenance cost and downtime of equipment can be reduced.

[0004] Traditional control methods usually rely on preset parameters and fixed logic, lack of real-time environmental perception and adaptability, making it difficult for the system to make quick and accurate adjustments when facing sudden conditions or dynamic disturbances. The feedback mechanism of existing systems often has problems of delay or insufficient precision, further limiting its application effect in high-precision scenarios. These problems not only affect the continuity and stability of production, but also may cause resource waste and cost increase.

[0005] In view of the above problems, a novel vertical lathe beam lifting screw nut structure is proposed. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a novel vertical lathe beam lifting screw nut structure, which solves the problems of low transmission efficiency, unstable operation and easy overstroke damage in the traditional lifting mechanism in the background technology.

[0007] To achieve the above object, the utility model provides the following technical scheme: A novel vertical lathe beam lifting screw rod nut structure, including lifting box, lifting screw rod, stand, travel switch, flange plate, nut seat, copper nut, gland, shaft sleeve, thrust cylindrical roller bearing and crossbeam, the lifting box is arranged at the most top of structure, the lifting screw rod runs through the lifting box and extends to below, the stand is located at both sides of lifting screw rod and is connected with the lifting box and crossbeam, the travel switch is installed on the stand, the flange plate is located in the middle of stand, the nut seat is located below the flange plate, the copper nut is located in the nut seat and cooperates with the lifting screw rod, the gland covers on the shaft sleeve, the shaft sleeve wraps the thrust cylindrical roller bearing, the thrust cylindrical roller bearing supports the lifting screw rod, and the crossbeam is located at the most bottom of structure.

[0008] By adopting the above technical scheme, the motor is in the lifting box, the screw rod is driven to rotate by the motor, and damping washers are arranged between the outer ring of the thrust cylindrical roller bearing and the inner wall of the shaft sleeve to absorb vibration and reduce noise.

[0009] As a further description of the above technical scheme: The inner wall of the lifting box is provided with a reinforcing rib structure, and the side surface of the lifting box is provided with a circular opening.

[0010] By adopting the above technical scheme, the motor generates heat during operation, the circular opening allows air to circulate inside and outside the box, and the heat is removed in time to prevent the motor from being damaged due to overheating and prolong the service life of the motor.

[0011] As a further description of the above technical scheme: The top of the lifting box is provided with a reserved interface for connecting with an external transmission device.

[0012] By adopting the above technical scheme, the vertical lathe beam lifting screw rod nut structure can be easily integrated with other equipment or systems, improving the versatility and applicability of the equipment.

[0013] As a further description of the above technical scheme: The surface of the lifting screw rod is processed with trapezoidal threads, and a guide block is arranged in the middle of the lifting screw rod and cooperates with a guide groove in the inner side of the stand.

[0014] By adopting the above technical scheme, the self-locking property can ensure that the crossbeam can be stably stopped at the current position after the motor stops rotating, and will not slide down due to its own gravity or other external forces.

[0015] As a further description of the above technical scheme: The inner side of the stand is provided with a guide groove, the travel switch is installed on the outer side of the stand, and the travel switch is connected with a control system through a signal line.

[0016] By adopting the technical scheme, the travel switch functions to monitor the lifting position of the cross beam, and when the cross beam is lifted or lowered to the preset position, the travel switch is triggered and signals are transmitted to the control system.

[0017] As a further description of the above technical scheme, the trigger position of the travel switch is finely adjusted by the adjusting bolt.

[0018] By adopting the technical scheme, the position of the travel switch can be accurately changed by the adjusting bolt, so that the travel switch can be triggered in time when the cross beam reaches the accurate position, and the reliability and safety of the equipment are improved.

[0019] As a further description of the above technical scheme, the outer wall of the nut seat is provided with a spiral-shaped heat dissipation groove.

[0020] By adopting the technical scheme, friction is generated between the nut seat and the screw rod during rotation of the screw rod, so that heat is generated. The spiral-shaped heat dissipation groove can increase the heat dissipation area of the nut seat, so that air can better contact the surface of the nut seat and heat dissipation is accelerated. In this way, the temperature of the nut seat can be effectively reduced, the wear of the nut seat and the screw rod caused by excessively high temperature is reduced, and the service life of the equipment is prolonged.

[0021] As a further description of the above technical scheme, the bottom surface of the cross beam is provided with an anti-skid pad, and the middle part of the cross beam is provided with a plurality of mounting holes.

[0022] By adopting the technical scheme, the cross beam has an elongated structure, and the two ends thereof are connected with the stand columns to provide bottom support and ensure the stability and safety of the entire lifting mechanism. Further, the bottom surface of the cross beam is provided with an anti-skid pad to enhance the friction between the cross beam and the mounting surface and prevent displacement of the equipment during operation.

[0023] Compared with the prior art, the novel vertical lathe cross beam lifting screw rod nut structure has the following beneficial effects:

[0024] 1. The novel vertical lathe cross beam lifting screw rod nut structure first converts rotary motion into linear motion through precise cooperation of the lifting screw rod and the copper nut, the transmission efficiency is above 95%, the lifting precision is controlled within a range of ±0.1 mm, the perpendicularity deviation during lifting is not more than 0.05° through the synergistic effect of the stand column, the flange plate and the nut seat, and the overall stability is significantly improved.

[0025] 2. The novel vertical lathe beam lifting screw structure has the advantages of effectively avoiding the overstroke problem through the arrangement of the travel switch, improving the safety of the equipment, and enhancing the applicability of the equipment through the adjustability of the triggering position, and prolonging the service life of the equipment under continuous operation conditions through the wear resistance and self-lubricating properties of the copper nut and the load-carrying capacity of the thrust cylindrical roller bearing. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a whole structure schematic view of the utility model.

[0027] In the figure: 1, lifting box body; 2, lifting screw; 3, stand; 4, travel switch; 5, flange plate; 6, nut seat; 7, copper nut; 8, gland; 9, shaft sleeve; 10, thrust cylindrical roller bearing; 11, beam. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0029] In order to further understand the content of the utility model, the utility model will be described in detail with reference to the drawings.

[0030] Reference Figure 1 The novel vertical lathe beam lifting screw structure of the utility model comprises a lifting box body 1, a lifting screw 2, a stand 3, a travel switch 4, a flange plate 5, a nut seat 6, a copper nut 7, a gland 8, a shaft sleeve 9, a thrust cylindrical roller bearing 10 and a beam 11, and the design and connection relationship of each component jointly constitute an efficient, stable and safe lifting mechanism.

[0031] The lifting box body 1 is the main shell of the whole lifting mechanism, is installed at the uppermost of the structure, is used for protecting internal mechanical components and providing installation support. The outer wall of the lifting box body 1 is provided with a plurality of bolt holes, and other key components are fixed on the lifting box body 1 through high-strength bolts. The side surface of the lifting box body 1 is provided with a circular opening, facilitating the installation or adjustment of internal components. In addition, the inner wall of the lifting box body 1 is designed with a reinforcing rib structure, which significantly enhances the rigidity of the lifting box body 1, reduces the risk of deformation caused by external load or long-term use, thereby ensuring the stability of the whole lifting mechanism. The top of the lifting box body 1 also reserves an interface connected with an external transmission device, and power is transmitted to the lifting screw 2 through a shaft coupling.

[0032] The lifting screw 2 is the core transmission component of the lifting mechanism, penetrating through the lifting box 1 and extending to the lower side, cooperating with the column 3 to complete the lifting action. The surface of the lifting screw 2 is precisely machined with trapezoidal threads, which not only improves the carrying capacity but also effectively reduces thread wear and prolongs service life. The upper part of the lifting screw 2 is connected to the transmission device inside the lifting box 1 through a shaft coupling. The transmission device can be a servo motor or a stepper motor, which drives the lifting screw 2 to rotate through rotary motion. The lower end of the lifting screw 2 cooperates with the thrust cylindrical roller bearing 10, which is located inside the shaft sleeve 9 and can bear large axial loads while reducing friction loss and improving transmission efficiency. The middle part of the lifting screw 2 is provided with a guide block, which cooperates with the guide groove on the inner side of the column 3 to limit the radial displacement of the lifting screw 2, thereby improving the straightness accuracy during lifting.

[0033] The column 3 is arranged on both sides of the lifting screw 2 and has a long strip structure. The two ends are connected with the lifting box 1 and the cross beam 11 respectively. The design of the column 3 ensures the perpendicularity and overall stability of the lifting mechanism. The inner side of the column 3 is provided with a guide groove, the width and depth of which are accurately calculated and tightly cooperate with the guide block on the lifting screw 2 to ensure that the lifting screw 2 will not deviate during operation. The outer side of the column 3 is also provided with a travel switch 4, the position of which is close to the flange plate 5, which is used to detect the travel position of the lifting mechanism. When the lifting mechanism reaches the preset travel limit, the travel switch 4 sends a signal and cuts off the power input to avoid equipment damage due to overtravel. The trigger position of the travel switch 4 can be adjusted by adjusting the bolt to adapt to different application scenarios.

[0034] The flange plate 5 is located in the middle of the column 3 and serves as a connecting piece to fixedly connect the column 3 with other components such as the nut seat 6. The flange plate 5 is provided with a plurality of bolt holes, which are fastened and connected by high-strength bolts to ensure the integrity and stability of the structure. The contact surface of the flange plate 5 is precisely machined and has high flatness and roughness requirements, which can tightly fit with adjacent components to prevent loosening or oil leakage. The center of the flange plate 5 is provided with a through hole for accommodating the passing part of the lifting screw 2. The diameter of the through hole is slightly larger than the outer diameter of the lifting screw 2 to reduce friction and ensure smooth operation of the lifting screw 2.

[0035] The nut seat 6 is located below the flange plate 5 and is connected with the copper nut 7 to support and fix the copper nut 7. The nut seat 6 has an annular structure, and its inner diameter matches the outer diameter of the copper nut 7 to achieve tight cooperation. The outer wall of the nut seat 6 is provided with a heat dissipation groove, which is spirally distributed to quickly dissipate the heat generated by friction, thereby reducing the working temperature of the copper nut 7 and prolonging the service life. The bottom of the nut seat 6 is provided with a boss structure, which cooperates with the inner side of the gland 8 to form a sealing effect and prevent dust and impurities from entering the internal parts.

[0036] The copper nut 7 is located in the nut seat 6 and cooperates with the lifting screw 2 to convert the rotational motion of the lifting screw 2 into linear motion through threaded transmission. The copper nut 7 is made of high-purity copper material, which has good wear resistance and self-lubricating properties, and can significantly reduce friction loss. The inner threaded surface of the copper nut 7 is coated with a graphite coating, which further reduces the friction coefficient and improves durability. The outer diameter of the copper nut 7 and the inner diameter of the nut seat 6 leave a small gap, which can compensate for the dimensional changes caused by thermal expansion, thereby ensuring the stability of the copper nut 7 in different working environments.

[0037] The gland 8 is located below the nut seat 6 and covers the shaft sleeve 9, playing a dustproof and sealing role. The gland 8 is a circular cover, and the edge is provided with a sealing ring made of high-temperature resistant rubber material, which can effectively prevent dust and impurities from entering the inside of the shaft sleeve 9. The inner side of the gland 8 is provided with a boss structure, which cooperates with the end face of the shaft sleeve 9 to enhance the sealing performance. The top of the gland 8 is provided with a threaded hole, which is fixedly connected with the nut seat 6 through a bolt, ensuring that the gland 8 will not loosen during operation.

[0038] The shaft sleeve 9 is located below the gland 8 and wraps outside the thrust cylindrical roller bearing 10, playing a supporting and guiding role. The shaft sleeve 9 is a cylindrical structure, and its inner diameter matches the outer diameter of the thrust cylindrical roller bearing 10, which can realize accurate positioning. The inner wall of the shaft sleeve 9 is provided with a lubricating oil groove, which is distributed along the axial direction, which can store lubricating oil and continuously reduce the friction loss of the bearing. The bottom of the shaft sleeve 9 is provided with a shock pad made of elastic material, which can absorb vibration and reduce noise, thereby improving the stability during operation.

[0039] The thrust cylindrical roller bearing 10 is located inside the shaft sleeve 9, which is used to support the lifting screw 2, bear the axial load and reduce friction. The inside of the thrust cylindrical roller bearing 10 is provided with a plurality of uniformly distributed rollers, and the number and size of the rollers are optimized and designed, which can significantly improve the carrying capacity. The outer ring of the thrust cylindrical roller bearing 10 is provided with a shock pad between the inner wall of the shaft sleeve 9, which can further absorb vibration and reduce operating noise. The inner ring of the thrust cylindrical roller bearing 10 is closely matched with the lifting screw 2, ensuring that the lifting screw 2 will not shake during operation.

[0040] The cross beam 11 is located at the very bottom of the entire structure, which is a long strip-shaped structure, and its two ends are connected with the stand column 3 respectively, providing bottom support and ensuring the stability and safety of the entire lifting mechanism. The bottom surface of the cross beam 11 is provided with a non-slip pad made of rubber material, which can enhance the friction between the installation surface and prevent the equipment from shifting during operation. The middle part of the cross beam 11 is provided with a plurality of mounting holes, which are fixed on the installation surface through bolts, ensuring the stability of the entire lifting mechanism.

[0041] Working principle: the servo motor or the step motor drives the lifting lead screw 2 to rotate through the shaft coupling, the rotary motion of the lifting lead screw 2 is converted into the linear motion of the copper nut 7 through the screw transmission, the copper nut 7 drives the nut seat 6 and the components connected therewith to vertically ascend along the lifting lead screw 2, the guidance in the lifting process is jointly completed by the guide groove in the inner side of the column 3 and the guide block on the lifting lead screw 2, the travel switch 4 monitors the travel position of the lifting mechanism in real time, when the lifting mechanism reaches the preset travel limit, the travel switch 4 sends a signal and cuts off the power input through the control system, so as to avoid the occurrence of the overtravel problem, in the lifting process, the thrust cylindrical roller bearing 10 bears the axial load and reduces the friction, the lubricating oil groove continuously provides lubrication for the bearing, ensures the smooth operation of the lifting mechanism, the sealing design of the gland 8 and the shaft sleeve 9 effectively prevents dust and impurities from entering the internal parts, prolongs the service life of the equipment.

[0042] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0043] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel vertical lathe beam lifting screw nut structure, characterized in that: Including lifting box (1), lifting screw rod (2), column (3), travel switch (4), flange (5), nut seat (6), copper nut (7), gland (8), shaft sleeve (9), thrust cylindrical roller bearing (10) and crossbeam (11), the lifting box (1) is arranged at the uppermost of structure, the lifting screw rod (2) is through the lifting box (1) and extends to below, the column (3) is located on both sides of lifting screw rod (2) and is connected with lifting box (1) and crossbeam (11), the travel switch (4) is installed on column (3), the flange (5) is located in the middle of column (3), the nut seat (6) is located below flange (5), the copper nut (7) is located in nut seat (6) and is matched with lifting screw rod (2), the gland (8) covers on shaft sleeve (9), the shaft sleeve (9) wraps thrust cylindrical roller bearing (10), the thrust cylindrical roller bearing (10) supports lifting screw rod (2), the crossbeam (11) is located at the lowermost of structure.

2. The novel vertical lathe beam lifting screw nut structure according to claim 1, characterized in that: The inner wall of the lifting box (1) is provided with a reinforcing rib structure, and the side of the lifting box (1) is provided with a circular opening.

3. The novel vertical lathe beam lifting screw nut structure according to claim 1, characterized in that: The top of the lifting box (1) is reserved with an interface for connecting with an external transmission device.

4. The novel vertical lathe beam lifting screw nut structure according to claim 1, characterized in that: The surface of the lifting screw rod (2) is processed with trapezoidal thread, and the middle of the lifting screw rod (2) is provided with a guide block matched with a guide groove in the inner side of the column (3).

5. The novel vertical lathe beam lifting screw rod nut structure according to claim 1, characterized in that: The inner side of the column (3) is provided with a guide groove, and the travel switch (4) is installed on the outer side of the column (3), and the travel switch (4) is connected with a control system through a signal line.

6. A novel vertical lathe beam lifting screw nut structure according to claim 1, characterized in that: The trigger position of the travel switch (4) is adjusted by a regulating bolt.

7. A novel vertical lathe beam lifting screw nut structure according to claim 1, characterized in that: The outer wall of the nut seat (6) is provided with a heat dissipation groove, and the heat dissipation groove is distributed in a spiral shape.

8. A novel vertical lathe beam lifting screw nut structure according to claim 1, characterized in that: The bottom surface of the crossbeam (11) is provided with an antiskid pad, and the middle of the crossbeam (11) is provided with a plurality of mounting holes.

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