Band saw blade bottom edge polishing apparatus and method

Abstract

The application provides a band saw blade bottom edge polishing device and method. The band saw blade bottom edge polishing device comprises a driven wheel, an adjusting wheel, a driving wheel, a base and a polishing belt. One end of the base is rotatably installed with the driving wheel, and the other end of the base is rotatably installed with two driven wheels. The adjusting wheel is arranged between the two driven wheels. The polishing belt is wound around the driving wheel and the two driven wheels to form a first V-shaped section. The polishing belt is wound around the two driven wheels and the adjusting wheel to form a second V-shaped section. The surface of the side of the second V-shaped section away from the adjusting wheel is a working surface. The side of the second V-shaped section in contact with the adjusting wheel is a circular arc surface with a radius R1. The adjusting wheel adjusts the size of the circular arc surface of the working surface in a moving manner. The application can not only process the bottom edge of the band saw blade into a circular arc shape during the running of the band saw blade, but also adjust the size of the circular arc of the working surface according to the thickness size of the band saw blade, and has high adaptability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of band saw blade processing, and particularly relates to a band saw blade bottom edge polishing device and method. BACKGROUND

[0002] In the use process of the bimetallic band saw blade, in order to ensure the cutting accuracy, the spring steel base band needs to bear a tension of more than 100 MPa. In the processing of the band saw blade, if the base band bottom edge is damaged, cracks are easily generated at the damaged position, resulting in the premature failure of the band saw blade.

[0003] The base band of the band saw blade has various width and thickness specifications, mainly including 13*0.65 mm, 13*0.9 mm, 19*0.9 mm, 27*0.9 mm, 34*1.1 mm, 41*1.3 mm, 54*1.6 mm, 67*1.6 mm, 80*1.6 mm, etc. In general, the thickness is from 0.65 to 1.6 mm. At present, the thickness cross-sectional dimension of the base band bottom edge is a right angle edge. Because the thickness dimension is small, and the base band bottom edge needs to bear tension and needs to be in contact with the saw bed limiting block, the bottom edge of the right angle edge is prone to cracking.

[0004] Therefore, in order to avoid the cracking of the right angle edge of the band saw blade bottom edge, the right angle edge needs to be ground and polished into a circular arc shape (as shown in FIG. 1). Figure 1 However, at present, there is no effective processing equipment and method capable of processing the circular arc shape. SUMMARY

[0005] The purpose of the present application is to provide a band saw blade bottom edge polishing device and method capable of processing the circular arc shape of the band saw blade bottom edge, so as to avoid the cracking of the band saw blade bottom edge.

[0006] The technical scheme of the present application is as follows: a band saw blade bottom edge polishing device, comprising a driven wheel, an adjusting wheel, a driving wheel, a base and a polishing belt, one end of the base is rotatably installed with the driving wheel, the other end of the base is rotatably installed with two driven wheels, the adjusting wheel is arranged between the two driven wheels, the polishing belt is wound around the driving wheel and the two driven wheels to form a first V-shaped section, the polishing belt is wound around the two driven wheels and the adjusting wheel to form a second V-shaped section, the surface of the side of the second V-shaped section away from the adjusting wheel is a working surface, the side of the second V-shaped section in contact with the adjusting wheel is a circular arc surface with a radius R1, and the adjusting wheel adjusts the circular arc surface size of the working surface in a moving manner.

[0007] In the above scheme, the polishing work loop is formed by the polishing belt running in two V shapes, and the work surface arc size is adjusted by the adjusting wheel, so that the bottom edge of the band saw blade can be processed into an arc shape during the running of the band saw blade, and the work surface arc size can be adjusted according to the thickness of the band saw blade to process different arc sizes, which has high adaptability and can be arranged between existing workstations without affecting the original production line layout structure.

[0008] Preferably, the center line of the adjusting wheel coincides with the center line of the driving wheel.

[0009] Preferably, the polishing belt comprises a belt and a sand belt, the belt is wound on the driven wheel, the driving wheel and the adjusting wheel, and the sand belt is sleeved on the outer surface of the belt.

[0010] Preferably, the belt comprises a belt body and a plurality of groove plates arranged at intervals along the belt body, and each two groove plates have a width D, D≥2R1; the belt body is in contact with the driven wheel, the driving wheel and the adjusting wheel.

[0011] Preferably, the groove plate has a thickness W, W≤ the thickness of the band saw blade.

[0012] Preferably, the belt body extends to the outside of the groove plate on one side in the axial direction, and the adjusting wheel is in contact with the part of the belt body extending to the outside.

[0013] Preferably, the band saw blade bottom edge polishing device further comprises an adjusting screw, a mounting seat and an adjusting rod, the mounting seat is arranged on the base, the adjusting screw is threadedly connected with the mounting seat, one end of the adjusting rod is connected with the adjusting screw, and the other end of the adjusting rod is rotatably arranged with the adjusting wheel.

[0014] Preferably, the base comprises a support plate, a spring and a base, the lower surface of the base is a fixed surface, the upper surface of the base is connected with the support plate through the spring, the driven wheel, the adjusting wheel and the driving wheel are rotatably arranged on the support plate, and the elastic force applied by the spring to the support plate can be converted into the polishing pressure of the work surface.

[0015] The application also provides a band saw blade bottom edge polishing method, which is performed by using the above-mentioned band saw blade bottom edge polishing device and comprises the following steps: adjusting the position of the adjusting wheel to change the arc size of the work surface according to the thickness of the band saw blade; starting the driving wheel, and driving the polishing belt to run by the driving wheel, and driving the driven wheel and the adjusting wheel to run by the polishing belt;

[0016] When the polishing belt returns to the driving wheel from the first driven wheel and runs from the driving wheel to the second driven wheel to form a first V-shaped section, the polishing belt runs from the second driven wheel to the adjusting wheel, is bent again and then runs to the first driven wheel to form a second V-shaped section, and the above process is repeated.

[0017] The band saw blade is vertically passed through the second V-shaped section, and the bottom edge of the band saw blade is in contact with the working surface, so that the working surface polishes the bottom of the band saw blade.

[0018] Preferably, the base has a pushing force for tightly abutting the working surface to the band saw blade, and the working surface applies polishing pressure to the bottom edge of the band saw blade through the pushing force.

[0019] Compared with the related art, the present application has the following advantages:

[0020] I. The band saw blade bottom edge polishing device forms a polishing working loop through the polishing belt in the form of two V-shaped operations, and adjusts the size of the circular arc of the working surface through the adjusting wheel, which not only can process the bottom edge of the band saw blade into a circular arc shape during the running of the band saw blade, but also can adjust the size of the circular arc of the working surface according to the size of the thickness of the band saw blade to process different circular arc sizes, which has high adaptability.

[0021] II. The band saw blade bottom edge polishing device can be implemented in the running of the band saw blade (such as continuous heat treatment), that is, the polishing device can be set to polish and grind into a circular arc shape during the running of the band saw blade from one station to another station, without affecting the layout structure of the original production line and without the need for additional polishing time, which ensures the production and processing efficiency of the band saw blade and improves the processing quality of the band saw blade.

[0022] III. The band saw blade bottom edge polishing device can also eliminate scratches on the bottom edge of the band saw blade with a depth of 0.05mm or less through polishing, which can improve the fatigue resistance of the band saw blade. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Structure diagram of the band saw blade with a circular arc-shaped bottom edge;

[0024] Figure 2 Structure diagram of the band saw blade bottom edge polishing device provided by the present application;

[0025] Figure 3 Structure diagram of the polishing belt;

[0026] Figure 4 Structure diagram of the belt.

[0027] In the drawings: 1, driven wheel; 2, adjusting wheel; 3, driving wheel; 4, base; 41, support plate; 42, spring; 43, base; 5, polishing belt; 51, belt; 511, belt body; 512, groove plate; 52, abrasive belt; 6, adjusting screw; 7, first V-shaped section; 8, second V-shaped section; 9, mounting seat; 10, adjusting rod; 11, band saw blade. DETAILED DESCRIPTION

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" used below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0029] like Figure 2 As shown, the band saw blade bottom edge polishing device provided in this embodiment includes a driven wheel 1, an adjusting wheel 2, a driving wheel 3, a base 4, a polishing belt 5, an adjusting screw 6, a first V-shaped section 7, a second V-shaped section 8, a mounting base 9, and an adjusting rod 10.

[0030] The base 4 includes a support plate 41, a spring 42, and a base 43. The lower surface of the base 43 is a fixed surface, allowing it to be fixed to the workstation floor or workbench. The base 43 has a through hole. The support plate 41 is located above the base 43. The bottom of the support plate 41 has a sleeve rod, the lower end of which is inserted into the through hole. The spring 42 is fitted onto the sleeve rod, and the spring 42 contacts the bottom surface of the support plate 41 and the top surface of the base 43. Under the action of the spring 42, the support plate 41 is pushed upward, and the sleeve rod slides within the through hole. Furthermore, under the action of the spring 42, the working surface 81 is always in contact with the bottom edge of the band saw blade 11 with appropriate polishing pressure, ensuring one-step polishing.

[0031] The support plate 41 is a rectangular plate, with the drive wheel 3 rotatably connected to the middle of its lower end and driven wheels 1 rotating on both sides of its upper end. The midpoint of the horizontal line connecting the two driven wheels 1 coincides with the center line of the drive wheel 3, and an adjustment wheel 2 is set on the coinciding line.

[0032] The polishing belt 5 rotates around the drive wheel 3 and the two driven wheels 1 to form a first V-shaped segment 7. The polishing belt 5 then rotates around the two driven wheels 1 and the adjusting wheel 2 to form a second V-shaped segment 8. The surface of the second V-shaped segment 8 away from the adjusting wheel 2 is the working surface 81, and the side of the second V-shaped segment 8 in contact with the adjusting wheel 2 is an arc surface with a radius R1. The adjusting wheel 2 adjusts the arc surface size of the working surface 81 by moving it. The working surface 81 directly processes the bottom of the band saw blade 11 into an arc R.

[0033] like Figure 3 As shown, the polishing belt 5 includes a belt 51 and an abrasive belt 52. The polishing belt 5 is shipped in a circular shape. Figure 3 , Figure 4As shown, the belt 51 comprises a belt body 511 and a plurality of groove plates 512 arranged at intervals along the belt body 511. The width D between every two groove plates 512 is greater than or equal to 2R1 to realize the bending of the belt body 511 with a small radius of curvature. The groove plates 512 have a thickness W, which is less than the thickness of the band saw blade to prevent large vibration when the polishing belt 5 passes the bottom edge of the band saw blade 11. The belt body 511 is in contact with the driving wheel 3, the driven wheel 1 and the adjusting wheel 2. The abrasive belt 52 is adhered to the outer surfaces of the groove plates 512 by glue. As shown in Figure 2 As shown, the groove plates 512 can be deformed under the action of the adjusting wheel 2 to form a circular arc working surface 81 at the position.

[0034] As shown in Figure 2 The mounting seat 9 is fixed to the support plate 41, the adjusting screw 6 is in threaded connection with the mounting seat 9, one end of the adjusting rod 10 is connected with the adjusting screw 6, and the other end is rotatably provided with the adjusting wheel 2. The position of the adjusting wheel 2 is adjusted by adjusting the up-and-down position of the adjusting rod 10 through the screwing action of the adjusting screw 6. In order to avoid interference between the groove plates 512 and the adjusting wheel 2 during operation, the belt body 511 extends to the outside of the groove plates 512 on one side in the axial direction, and the adjusting wheel 2 is in contact with the part of the belt body 511 extending to the outside. The adjusting wheel 2 is in contact with the upper surface of the belt body 511 through its lower surface to form the second V-shaped section 8 of the polishing belt 5. The change of the up-and-down displacement of the adjusting wheel 2 can change the opening of the second V-shaped section 8. For example, the smaller the opening, the smaller the circular arc size of the working surface 81, and vice versa. The circular arc size refers to the arc length. In addition, during the rotation of the adjusting screw 6, the adjusting rod 10 needs to be limited to rotate together. A guide block for limiting the rotation of the adjusting rod 10 together can be arranged to limit the axial position of the adjusting rod 10, and the guide block can be fixed to the support plate 41.

[0035] A driving motor (with a reducer) can be directly installed on the driving wheel 3 to directly drive the driving wheel 3 to rotate through the motor shaft of the driving motor. Alternatively, a rotating shaft can be installed at the center of the driving wheel 3, and a synchronous pulley is fixed to the rotating shaft. The synchronous pulley is connected with the pulley on the motor shaft of the driving motor (not shown) through a synchronous belt. The synchronous belt is driven to rotate by the driving motor, and the synchronous pulley is driven to rotate by the synchronous belt. Under the action of the rotating shaft, the synchronous pulley drives the driving wheel 3 to rotate together.

[0036] The application also provides a method for polishing the bottom edge of a band saw blade, which is performed by using the polishing device for the bottom edge of a band saw blade, and comprises the following steps: adjusting the position of the adjusting wheel 2 to change the arc size of the working surface 81 according to the thickness of the band saw blade 11; and starting the driving wheel 3 to drive the polishing belt 5 to rotate, and the polishing belt 5 drives the driven wheel 1 and the adjusting wheel 2 to rotate.

[0037] When the polishing belt 5 returns to the driving wheel 3 from the first driven wheel 1 and rotates from the driving wheel 3 to the second driven wheel 1 to form the first V-shaped section 7, the polishing belt 5 rotates from the second driven wheel 1 to the adjusting wheel 2, is bent and then rotates to the first driven wheel 1 to form the second V-shaped section 8, and thus the reciprocating cycle is formed.

[0038] The band saw blade 11 vertically passes through the second V-shaped section 8, and the bottom edge of the band saw blade 11 is in contact with the working surface 81, so that the working surface 81 polishes the bottom of the band saw blade 11.

[0039] The above description is only an embodiment of the application, and does not limit the patent scope of the application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is based on the content of the specification and drawings, is also included in the patent protection scope of the application.

Claims

1. A band saw blade bottom edge polishing apparatus characterized by, The polishing device comprises a driven wheel (1), an adjusting wheel (2), a driving wheel (3), a base (4) and a polishing belt (5), one end of the base (4) is rotatably installed with the driving wheel (3), the other end of the base (4) is rotatably installed with two driven wheels (1), the adjusting wheel (2) is arranged between the driven wheel (1) and the driving wheel (3), the polishing belt (5) is wound around the driving wheel (3) and the two driven wheels (1) to form a first V-shaped section (7), the polishing belt (5) is wound around the two driven wheels (1) and the adjusting wheel (2) to form a second V-shaped section (8), the surface of the side of the second V-shaped section (8) away from the adjusting wheel (2) is a working surface (81), the side of the second V-shaped section (8) in contact with the adjusting wheel (2) is a circular arc surface with a radius R1, the adjusting wheel (2) adjusts the size of the circular arc surface of the working surface (81) in a moving manner; the polishing belt (5) comprises a belt (51) and a sand belt (52), the belt (51) is wound around the driven wheel (1), the driving wheel (3) and the adjusting wheel (2), and the sand belt (52) is sleeved on the outer surface of the belt (51). The belt (51) comprises a belt body (511) and a plurality of slot plates (512) arranged at intervals along the belt body (511), the belt body (511) extends to the outside of the slot plate (512) on one side in the axial direction, and the adjusting wheel (2) is in contact with the part of the belt body (511) extending to the outside.

2. The band saw blade bottom edge polishing apparatus according to claim 1, wherein The center line of the adjusting wheel (2) coincides with the center line of the driving wheel (3).

3. The band saw blade bottom edge polishing apparatus according to claim 1, wherein The width D between every two slot plates (512) is greater than or equal to 2R1; the belt body (511) is in contact with the driven wheel (1), the driving wheel (3) and the adjusting wheel (2).

4. The band saw blade bottom edge polishing apparatus according to claim 3, wherein The slot plate (512) has a thickness W, and the thickness W is less than or equal to the thickness of the band saw blade.

5. The band saw blade bottom edge polishing apparatus according to claim 1, wherein The device further comprises an adjusting screw (6), a mounting seat (9) and an adjusting rod (10), the mounting seat (9) is arranged on the base (4), the adjusting screw (6) is threadedly connected with the mounting seat (9), one end of the adjusting rod (10) is connected with the adjusting screw (6), and the other end of the adjusting rod (10) is rotatably provided with the adjusting wheel (2).

6. The band saw blade bottom edge polishing apparatus according to claim 1, wherein The base (4) comprises a support plate (41), a spring (42) and a base (43), the lower surface of the base (43) is a fixed surface, the upper surface of the base (43) is connected with the support plate (41) through the spring (42), the driven wheel (1), the adjusting wheel (2) and the driving wheel (3) are rotatably installed on the support plate (41), and the elastic force applied by the spring (42) to the support plate (41) can be converted into the polishing pressure of the working surface (81).

7. A method of polishing the bottom edge of a band saw blade using the device according to any one of claims 1 to 6, characterized in that The device comprises the following steps: According to the thickness of the band saw blade (11), the position of the adjusting wheel (2) is adjusted to change the size of the circular arc of the working surface (81); The driving wheel (3) is started, the driving wheel (3) drives the polishing belt (5) to rotate, and the polishing belt (5) drives the driven wheel (1) and the adjusting wheel (2) to rotate; When the polishing belt (5) returns from the first driven wheel (1) to the driving wheel (3) and runs from the driving wheel (3) to the second driven wheel (1) to form a first V-shaped section (7), the polishing belt (5) runs from the second driven wheel (1) to the adjusting wheel (2), is bent and then runs to the first driven wheel (1) to form a second V-shaped section (8), and thus the reciprocating cycle is formed; The band saw blade (11) vertically passes through the second V-shaped section (8), and the bottom edge of the band saw blade (11) is in contact with the working surface (81), so that the working surface (81) polishes the bottom of the band saw blade (11).

8. The method of polishing according to claim 7, wherein, The base (4) has a pushing force that can tightly abut the working surface (81) with the band saw blade (11), and the working surface (81) applies polishing pressure to the bottom edge of the band saw blade (11) through the pushing force.

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