CN103008782B - Structure for eliminating saw band vibration of high-speed band sawing machine - Google Patents

Abstract

A structure for eliminating saw band vibration of a high-speed band sawing machine belongs to the field of machining equipment. The vibration phenomenon of the saw blade of the existing band sawing machine is serious in the cutting process, so that the cut of a processed workpiece is deflected, and the saw blade is often broken. The invention comprises a saw bow, a gantry beam, a fixed base, a numerical control system, a saw blade moving mechanism, a saw blade clamping mechanism, a tensioning oil cylinder and a saw bow moving mechanism; the gantry beam is arranged on the fixed base, and the saw bow and the gantry beam are assembled together; the saw blade moving mechanism, the saw blade clamping mechanism, the tensioning mechanism and the tensioning oil cylinder are respectively fixed on the saw bow, and the tensioning oil cylinder is connected with the tensioning mechanism; the saw bow movement mechanism is arranged on the gantry beam and is connected with the saw bow, and the saw bow movement mechanism drives the saw bow to move up and down along the gantry beam. The invention can reduce the vibration of saw blade, improve the cutting quality of the processed workpiece, reduce the fracture of saw blade, and cut the workpiece stably at high speed.

Description

The Structure of Eliminating Vibration of Saw Band on High Speed Band Saw Machine

technical field

The invention relates to the field of mechanical processing equipment, in particular to a structure for eliminating the vibration of the saw band of a high-speed band saw machine.

Background technique

The saw blade of an ordinary band sawing machine is tightened by the driving wheel installed on the bow and the driven wheel assembled on the tensioning mechanism. The driving wheel is connected to the reducer, and the reducer is connected to the ordinary motor. The tensioning mechanism is installed on the bow. Installed on the driving wheel and the driven wheel, with the operation of the ordinary motor, the ordinary motor drives the reducer, the reducer drives the driving wheel, and the driving wheel drives the driven wheel through the saw blade, so that the saw blade rotates at a constant speed. The saw bow part is moved up and down by the counterweight oil cylinder, so that the saw blade can be fed up and down, and the band sawing machine can complete the cutting of the workpiece by the rotation of the saw blade and the up and down feed motion. Since the ordinary motor and the counterweight cylinder (hydraulic system) control the movement speed and feed rate of the saw blade with low precision, the movement and feed accuracy of the saw blade cannot be guaranteed, thus accumulating irregular unreleased energy on the saw blade During the process, the vibration of the saw blade is serious, which makes the incision of the processed workpiece deflected, and often causes the saw blade to break. With the continuous development of society and the continuous advancement of science and technology, the above-mentioned defects in the prior art band sawing machines need to be solved urgently. Therefore, people urgently hope that a structure for eliminating the vibration of the saw band of a high-speed band sawing machine will be released.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the severe vibration phenomenon of the saw blade of the band sawing machine in the prior art during the cutting process, which makes the incision of the processed workpiece skewed and often causes the defect of the saw blade to break, and satisfies people's wishes and high-speed band sawing machine To meet the market demand, provide a high-speed band saw machine structure to eliminate the vibration of the saw band. This high-speed band saw machine structure to eliminate the vibration of the saw band can greatly reduce the irregular and unreleased energy accumulated on the saw blade during the cutting process, thereby greatly reducing The vibration phenomenon of the saw blade improves the cutting quality of the workpiece, and greatly reduces the phenomenon of saw blade breakage, so that the saw blade can cut the workpiece smoothly and at high speed.

The technical solution adopted by the present invention to solve the technical problem is: the structure for eliminating the vibration of the saw band of the high-speed band sawing machine, including the saw bow, the gantry beam and the fixed base, the gantry beam is installed on the fixed base, and the saw bow and the gantry beam are assembled on the Together, the structure of the high-speed band sawing machine to eliminate the vibration of the saw band also includes a numerical control system, a saw blade movement mechanism, a saw blade clamping mechanism, a tensioning mechanism, a tensioning oil cylinder and a saw bow movement mechanism. The numerical control system is installed on a fixed base, and the saw blade moves The mechanism, saw blade clamping mechanism, tensioning mechanism and tensioning oil cylinder are respectively fixed on the saw bow, and the tensioning oil cylinder is connected with the tensioning mechanism. The bow kinematic mechanism is connected with the saw bow.

In the above technical solution, the saw blade movement mechanism includes a servo spindle motor, a reducer, a driving wheel, a driven wheel and a saw blade, the driving wheel is installed on the saw bow, and the servo spindle motor and the A reducer are respectively fixed on the On the saw bow, the driven wheel and the tensioning mechanism are assembled together, the servo spindle motor is connected to the A reducer, the output shaft of the A reducer is connected to the driving wheel, and the saw blade is connected around the driving wheel and the driven wheel; the numerical control system The servo spindle motor is connected through a data line, and the numerical control system sends a speed change command to the servo spindle motor.

Further, the saw blade clamping mechanism includes a short linear guide rail, a movable clamping block and a fixed clamping block, the short linear guide rail is fixed on the saw bow, and is used for clamping the saw blade and moving and clamping along the short linear guide rail. The block is mounted on the saw bow through a slider on a short linear guide rail, and the fixed clamping block for clamping the saw blade is fixedly mounted on the saw bow.

Further, the saw bow movement mechanism includes a linear guide rail, a ball screw, a bearing seat, a B reducer and a servo motor, the linear guide rail is fixed on the gantry beam, and the saw bow is connected to the slider on the linear guide rail; the servo motor , The B reducer and the bearing seat are connected sequentially from top to bottom, the bearing seat is fixed on the gantry beam, the upper end of the ball screw is assembled with the bearing in the bearing seat, and the saw bow is rigidly connected with the nut at the lower end of the ball screw; The numerical control system is connected to the servo motor through a data line, and the numerical control system sends a steering change command to the servo motor.

Furthermore, the gantry crossbeam has two uprights, and a linear guide rail is respectively fixed on the two uprights.

Further, the B reducer is a planetary reducer.

The beneficial effects of the present invention are: 1. The present invention can greatly reduce the irregular and unreleased energy accumulated on the saw blade during the cutting process, thereby greatly reducing the vibration phenomenon of the saw blade, improving the cutting quality of the workpiece, and greatly reducing the fracture of the saw blade The phenomenon makes the saw blade cut the workpiece smoothly and at high speed. 2. The driving wheel that drives the saw blade is powered by the servo spindle motor connected to the reducer, and the CNC system continuously sends speed change instructions to the servo spindle motor, thereby accurately changing the speed of the driving wheel, so that the saw blade moves fast and sometimes slowly , so as to eliminate the energy accumulated by the saw blade when cutting the workpiece, and prevent the saw blade from generating lateral vibration when cutting the workpiece; at the same time, the numerical control system continuously sends steering change instructions to the servo motor, so that the servo motor continuously rotates positively and negatively, thus passing through the planetary The reducer drives the ball screw to drive the saw bow to move up and down, thereby eliminating the longitudinal vibration energy accumulated by the saw blade when cutting the workpiece, preventing the saw blade from producing longitudinal vibration when cutting the workpiece, and reducing the accumulation of vibration energy on the saw blade to avoid the vibration and Fracture, to achieve the purpose of improving processing speed and processing accuracy. 3. The present invention is reasonable in design, strong in practicability, and has extensive popularization and use value in the field of mechanical processing equipment.

Description of drawings

Fig. 1 is the front view of the present invention;

Fig. 2 is the back view of the present invention;

Fig. 3 is a top view of the present invention;

Fig. 4 is the left view of the present invention;

Explanation of reference numerals among Fig. 1 to Fig. 4:

1——saw bow; 2——A reducer; 3——servo spindle motor;

4——Linear guide rail; 5——Gantry beam; 6——Ball screw;

7——Bearing seat; 8——B reducer; 9——Servo motor;

10——short linear guide rail; 11——moving clamping block; 12——tension mechanism;

13——tension cylinder; 14——fixed base; 15——driven wheel;

16——saw blade; 17——fixed clamping block; 18——driving wheel.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail, is not to limit the implementation scope of the present invention hereto, and this embodiment does not limit protection scope of the present invention, and those who are familiar with this art will not deviate from the present invention Reasonable changes made under the protection scope and spirit of the invention should all belong to the protection scope of the present invention.

As shown in Figures 1 to 4, the high-speed band sawing machine described in this embodiment eliminates the vibration of the saw band, including a saw bow 1, a gantry beam 5 and a fixed base 14, and the gantry beam 5 is installed on the fixed base 14, The saw bow 1 and the gantry beam 5 are assembled together, and the structure for eliminating vibration of the saw band of the high-speed band sawing machine also includes a numerical control system, a saw blade movement mechanism, a saw blade clamping mechanism, a tensioning mechanism 12, a tensioning oil cylinder 13 and a saw bow movement mechanism, The numerical control system is installed on the fixed base 14, the saw blade moving mechanism, the saw blade clamping mechanism, the tensioning mechanism 12 and the tensioning oil cylinder 13 are respectively fixed on the saw bow 1, the tensioning oil cylinder 13 is connected with the tensioning mechanism 12, and the saw bow moves The mechanism is installed on the gantry beam 5, and the saw bow movement mechanism that drives the saw bow 1 to move up and down along the gantry beam 5 is connected to the saw bow 1. The saw blade movement mechanism includes a servo spindle motor 3, A reducer 2, a driving wheel 18, a driven wheel 15 and a saw blade 16. The drive wheel 18 is installed on the saw bow 1, and the servo spindle motor 3 and the A reducer 2 are fixed respectively. On the saw bow 1, the driven wheel 15 and the tensioning mechanism 12 are assembled together, the servo spindle motor 3 is connected to the A reducer 2, the output shaft of the A reducer 2 is connected to the driving wheel 18, and the servo spindle motor 3 Drive A reducer 2 to rotate, and A reducer 2 drives the rotation of driving wheel 18. The saw blade 16 is connected around the driving wheel 18 and the driven wheel 15; the numerical control system is connected to the servo spindle motor 3 through a data line, and the numerical control system continuously sends speed change instructions to the servo spindle motor 3; the tensioning mechanism 12 is fixed on On the saw bow 1 , the driven wheel 15 can rotate on the tensioning mechanism 12 . The saw blade 16 is tensioned between the driving wheel 18 and the driven wheel 15 through the joint action of the tensioning oil cylinder 13 and the tensioning mechanism 12, and the driving wheel 18 drives the saw blade 16 to run. The saw blade clamping mechanism includes a short linear guide rail 10, a moving clamping block 11 and a fixed clamping block 17. The short linear guide rail 10 is fixed on the saw bow 1 for clamping the saw blade 16 and can move along the short linear guide rail 10. The moving movable clamping block 11 is installed on the saw bow 1 through the slider on the short linear guide rail 10 , and the fixed clamping block 17 for clamping the saw blade 16 is fixedly installed on the saw bow 1 . The saw bow movement mechanism includes a linear guide rail 4, a ball screw 6, a bearing housing 7, a B reducer 8 and a servo motor 9, the linear guide rail 4 is fixed on the gantry beam 5, and the saw bow 1 and the linear guide rail 4 are Slider connection; servo motor 9, B reducer 8 and bearing housing 7 are connected sequentially from top to bottom, bearing housing 7 is fixed on the gantry beam 5, and the upper end of ball screw 6 is assembled with the bearing in bearing housing 7. The saw bow 1 is rigidly connected to the nut at the lower end of the ball screw 6; the numerical control system is connected to the servo motor 9 through a data line, and the numerical control system continuously sends steering change commands to the servo motor 9; on the one hand, the saw bow 1 The slider on the linear guide rail 4 is connected, and the linear guide rail 4 is fixed on the gantry beam 5 , so that the saw bow 1 can move up and down on the gantry beam 5 along the linear guide rail 4 . On the other hand, the nut on the lower end of the saw bow 1 and the ball screw 6 is rigidly connected, and the servo motor 9 indirectly installed on the gantry beam 5 drives the ball screw 6 to rotate through the B reducer 8 and the bearing seat 7, so that the saw bow 1 Move up and down along the linear guide rail 4. The gantry beam 5 has two columns on which a linear guide rail 4 is respectively fixed. The B reducer 8 is a planetary reducer. The directions described in this embodiment are based on FIG. 4 , the upper part of FIG. 4 is up, and the lower part of FIG. 4 is down.

The above is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, features and principles described in the patent application scope of the present invention are all included in the protection scope of the patent application for the present invention .

Claims (5)

1. The structure for eliminating the vibration of the saw band of the high-speed band sawing machine, including the saw bow (1), the gantry beam (5) and the fixed base (14), the gantry beam (5) is installed on the fixed base (14), the saw bow ( 1) Assembled with the gantry beam (5), it is characterized in that it also includes a numerical control system, a saw blade movement mechanism, a saw blade clamping mechanism, a tensioning mechanism (12), a tensioning oil cylinder (13) and a saw bow movement mechanism; The system is installed on the fixed base (14); the saw blade moving mechanism, the saw blade clamping mechanism, the tensioning mechanism (12) and the tensioning oil cylinder (13) are respectively fixed on the saw bow (1), and the tensioning oil cylinder (13) and The tension mechanism (12) is connected; the saw bow movement mechanism is installed on the gantry beam (5), and the saw bow movement mechanism that drives the saw bow (1) to move up and down along the gantry beam (5) is connected to the saw bow (1); The saw bow movement mechanism includes a linear guide rail (4), a ball screw (6), a bearing housing (7), a B reducer (8) and a servo motor (9); the linear guide rail (4) is fixed on the gantry beam (5 ), the saw bow (1) is connected with the slider on the linear guide rail (4); the servo motor (9), the B reducer (8) and the bearing seat (7) are connected sequentially from top to bottom, and the bearing seat ( 7) Fixed on the gantry beam (5), the upper end of the ball screw (6) is assembled with the bearing in the bearing seat (7), and the saw bow (1) is rigidly connected with the nut at the lower end of the ball screw (6) ; The numerical control system is connected to the servo motor (9) through a data line, and the numerical control system sends a steering change command to the servo motor (9). 2. The structure for eliminating the vibration of the saw band of a high-speed band saw machine according to claim 1, characterized in that: the saw blade movement mechanism includes a servo spindle motor (3), A reducer (2), a driving wheel (18), and a slave The driving wheel (15) and the saw blade (16); the driving wheel (18) is installed on the saw bow (1), and the servo spindle motor (3) and A reducer (2) are respectively fixed on the saw bow (1) , the servo spindle motor (3) is connected to the A reducer (2), the output shaft of the A reducer (2) is connected to the driving wheel (18); the driven wheel (15) is assembled with the tensioning mechanism (12) ;The saw blade (16) is connected around the driving wheel (18) and the driven wheel (15); the numerical control system is connected to the servo spindle motor (3) through a data line, and the numerical control system sends a speed change command to the servo spindle motor (3) . 3. The structure for eliminating saw band vibration of a high-speed band saw machine according to claim 1, characterized in that: the saw blade clamping mechanism includes a short linear guide rail (10), a moving clamping block (11) and a fixed clamping block ( 17); the short linear guide rail (10) is fixed on the saw bow (1); the moving clamping block (11) used to clamp the saw blade (16) and move along the short linear guide rail (10) passes through the short linear guide rail ( The slider on 10) is installed on the saw bow (1); the fixed clamping block (17) for clamping the saw blade (16) is fixedly installed on the saw bow (1). 4. The structure for eliminating saw band vibration of a high-speed band sawing machine according to claim 1, characterized in that: the gantry beam (5) has two columns, and a linear guide rail (4) is respectively fixed on the two columns. 5. The structure for eliminating saw band vibration of a high-speed band sawing machine according to claim 1, characterized in that: the B reducer (8) is a planetary reducer.