Double-servo synchronous drive saw bow feeding system of band sawing machine

Abstract

The utility model relates to the technical field of band sawing machines, in particular to a band sawing machine double-servo synchronous drive saw bow feeding system which comprises a portal frame, a saw bow body is movably arranged on the front face of the portal frame, and a saw band is movably arranged below the saw bow body. Mounting frames are symmetrically arranged on the two sides of the top end of the portal frame, and feeding mechanisms are arranged between the mounting frames and the saw bow body. Double-servo synchronous driving is adopted, the servo motors on the two sides of the top end of the portal frame work synchronously, so that the two sides of the saw bow body are evenly stressed and move stably, the saw belt below the saw bow body slowly descends along with the feeding movement of the saw bow body to saw and cut a workpiece, the feeding speed of the saw belt can be accurately controlled through the driving mode, the saw belt is kept stable, and the working efficiency is improved. Saw tooth impact force is reduced, tooth breakage is avoided, the service life of the band saw blade is prolonged, and the saw cutting surface is smooth.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of band sawing machine, concretely to a band sawing machine double servo synchronous drive saw bow feeding system. BACKGROUND

[0002] The metal band sawing machine band saw blade feeding system currently mainly adopts oil cylinder to control the vertical feeding of the band saw blade, and the saw bow part assembled with the band saw blade is supported by the hydraulic cylinder, and the slow descending feeding of the saw bow is realized by the pressure difference between the gravity of the saw bow itself and the supporting force of the hydraulic cylinder.

[0003] The current problems and defects are that the sawing feeding speed is unstable, the tooth impact force is large and the tooth collapse phenomenon is prone to occur, which seriously affects the service life of the band saw blade and causes the sawing surface to be not smooth.

[0004] The hydraulic oil in the hydraulic cylinder is difficult to achieve uniform flow rate due to different compression ratios affected by the environmental temperature, and the trace sealing leakage of the cylinder sealing element is inevitable, which causes the cylinder to have abnormal conditions such as stagnation. INVENTION CONTENTS

[0005] The utility model aims at providing a band sawing machine double servo synchronous drive saw bow feeding system to solve the problems in the above background.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A band sawing machine double servo synchronous drive saw bow feeding system comprises

[0008] A gantry is provided with a saw bow body movably on the front face, and a saw band is movably arranged below the saw bow body.

[0009] Symmetrical mounting racks are arranged on the top ends of the gantry, and a feeding mechanism is arranged between the mounting racks and the saw bow body.

[0010] Preferably, the feeding mechanism comprises a transmission shell, the transmission shell is arranged between the mounting racks and the front face of the gantry, a reducer is arranged on the inside upper portion of the transmission shell, a servo motor is arranged on the upper end of the mounting rack, and the output shaft of the servo motor is fixedly connected with the high-speed shaft of the reducer.

[0011] Preferably, the feeding mechanism further comprises a ball screw, the ball screw is vertically arranged on the inside lower portion of the transmission shell, a ball nut is movably arranged on the outside of the ball screw, symmetrical fixed seats are arranged on the back face of the saw bow body, and the fixed seats are fixedly sleeved with the ball nut.

[0012] Preferably, a plum blossom elastic coupling is arranged at the top end of the ball screw, and the other end of the plum blossom elastic coupling is fixedly connected with the low-speed shaft of the speed reducer.

[0013] Preferably, the ball screw is movably connected with the transmission shell through a bearing at one end inside the transmission shell.

[0014] Preferably, the speed reducer is a planetary reducer.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The double-servo synchronous driving saw bow feeding system of the band saw machine adopts double-servo synchronous driving, and the servo motors at the two sides of the top end of the portal frame work synchronously, so that the two sides of the saw bow body are uniformly stressed and stably moved, the saw band below the saw bow body slowly descends along with the feeding movement of the saw bow body to saw the workpiece, this driving mode can accurately control the feeding speed of the saw band, keeps the feeding speed stable, reduces the sawtooth impact force, avoids the tooth breaking phenomenon, prolongs the service life of the band saw blade and ensures the smooth sawing surface. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is an overall front view structural schematic diagram of the utility model;

[0018] Fig. 2 It is an overall front view structural schematic diagram of the utility model;

[0019] Fig. 3 It is an internal structure schematic diagram of the transmission shell of the utility model.

[0020] In the drawing: 1, portal frame; 2, saw bow body; 3, saw band; 4, mounting frame; 5, transmission shell; 6, speed reducer; 7, servo motor; 8, ball screw; 9, ball nut; 10, fixed seat; 11, plum blossom elastic coupling; 12, bearing. DETAILED DESCRIPTION

[0021] The technical solutions 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, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] As Figs. 1-3 shown, a technical scheme provided by the utility model comprises:

[0023] The application discloses a double-servo synchronous driving saw arch feeding system of a band saw machine, which comprises a portal frame 1, a saw arch body 2 movably arranged on the front face of the portal frame 1, a saw band 3 movably arranged below the saw arch body 2, mounting frames 4 symmetrically arranged at the top ends of the two sides of the portal frame 1, a feeding mechanism arranged between the mounting frames 4 and the saw arch body 2, the feeding mechanism comprising a transmission shell 5, the transmission shell 5 being arranged between the mounting frames 4 and the front face of the portal frame 1, a speed reducer 6 arranged inside and above the transmission shell 5, a servo motor 7 arranged at the upper end of the mounting frame 4, the output shaft of the servo motor 7 being fixedly connected with the high-speed shaft of the speed reducer 6, the feeding mechanism further comprising a ball screw 8 vertically arranged inside and below the transmission shell 5, a ball nut 9 movably arranged outside the ball screw 8, fixed seats 10 symmetrically arranged at the two ends of the back face of the saw arch body 2, the fixed seats 10 being fixedly sleeved with the ball nut 9, a plum blossom elastic coupling 11 arranged at the top end of the ball screw 8, the other end of the plum blossom elastic coupling 11 being fixedly connected with the low-speed shaft of the speed reducer 6, and the ball screw 8 being movably connected with the transmission shell 5 through a bearing 12 at one end inside the transmission shell 5, the speed reducer 6 being a planetary reducer.

[0024] In the embodiment, the double-servo synchronous driving is adopted, the servo motors 7 at the top ends of the two sides of the portal frame 1 are synchronously driven, the saw arch body 2 is uniformly stressed and stably moved, the saw band 3 below the saw arch body 2 slowly descends along with the feeding movement of the saw arch body 2 to saw the workpiece, the driving mode can accurately control the feeding speed of the saw band 3, the feeding speed is kept stable, the saw-tooth impact force is reduced, the saw-tooth collapse phenomenon is avoided, the service life of the band saw blade is prolonged, and the sawing surface is smooth.

[0025] Working principle: after the system is started, the servo motor 7 at the upper end of the mounting frame 4 starts to work and outputs power, the output shaft of the servo motor 7 is fixedly connected with the high-speed shaft of the speed reducer 6, the power is transmitted to the speed reducer 6, the speed reducer 6 adopts a planetary reducer, the high-speed rotating power input by the servo motor 7 is reduced through the internal gear transmission structure to obtain a suitable output rotating speed and torque, the power after the reduction is transmitted to the ball screw 8 vertically arranged inside and below the transmission shell 5 through the plum blossom elastic coupling 11, the plum blossom elastic coupling 11 can compensate displacement and buffer and absorb shock, the power transmission is stable, the top end of the ball screw 8 is connected with the low-speed shaft of the speed reducer 6 through the plum blossom elastic coupling 11, the ball screw 8 rotates synchronously with the low-speed shaft of the speed reducer 6, the ball nut 9 outside the ball screw 8 moves linearly along the axial direction of the ball screw 8 through the rolling friction of the ball when the screw rotates, the fixed seats 10 symmetrically arranged at the two ends of the back face of the saw arch body 2 are fixedly sleeved with the ball nut 9, therefore the linear movement of the ball nut 9 drives the saw arch body 2 to move vertically in the feeding movement on the front face of the portal frame 1 through the fixed seats 10.

[0026] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A band saw machine double servo synchronous driving saw bow feeding system, characterized in that: Comprising A gantry (1), a saw bow body (2) is movably arranged on the front face of the gantry (1), a saw belt (3) is movably arranged below the saw bow body (2); Symmetrically arranged mounting frames (4) are arranged on both sides of the top end of the gantry (1), a feeding mechanism is arranged between the mounting frames (4) and the saw bow body (2).

2. The double servo synchronous driving saw frame feeding system of band saw machine according to claim 1, characterized in that: The feeding mechanism comprises a transmission shell (5), the transmission shell (5) is arranged between the mounting frames (4) and the front face of the gantry (1), a reducer (6) is arranged inside and above the transmission shell (5), a servo motor (7) is arranged at the upper end of the mounting frame (4), the output shaft of the servo motor (7) is fixedly connected with the high-speed shaft of the reducer (6).

3. The double servo synchronous driving saw frame feeding system of band saw machine according to claim 2, characterized in that: The feeding mechanism further comprises a ball screw (8), the ball screw (8) is vertically arranged inside and below the transmission shell (5), a ball nut (9) is movably arranged outside the ball screw (8), fixed seats (10) are symmetrically arranged at both ends of the back face of the saw bow body (2), the fixed seats (10) are fixedly sleeved with the ball nut (9).

4. The double servo synchronous driving saw frame feeding system of band saw machine according to claim 3, characterized in that: A plum blossom elastic coupling (11) is arranged at the top end of the ball screw (8), the other end of the plum blossom elastic coupling (11) is fixedly connected with the low-speed shaft of the reducer (6).

5. The double servo synchronized driving saw frame feeding system of band saw machine according to claim 4, characterized in that: One end of the ball screw (8) inside the transmission shell (5) is movably connected with the transmission shell (5) through a bearing (12).

6. The double servo synchronized driving saw frame feeding system of band saw machine according to claim 2, characterized in that: The reducer (6) is a planetary reducer.

Images