A method and device for repairing eccentricity of circular saw blade base tooth

Abstract

The invention discloses a method for repairing the eccentricity of the tooth portion of a circular saw blade substrate, comprising the following steps: cutting a single board to obtain a saw blade blank, heat-treating the saw blade blank for quenching and tempering, controlling the quenching hardness at HRC59-65, and controlling the tempering hardness at HRC40-54; laser cutting the profile of the circular saw blade substrate, and then deburring, tempering and leveling, with the tempering temperature being 250°C-350°C; finally machining the center hole of the circular saw blade substrate by external cylindrical positioning and locking lathe; the invention also comprises special equipment, including a circular saw blade fixing mechanism, a saw blade tempering separation mechanism and an external cylindrical clamping mechanism, the circular saw blade fixing mechanism comprising a first supporting base, a central supporting rod, a plurality of pillars and a strong magnet; the saw blade tempering separation mechanism comprising a second supporting base, a fastening nut and a tool steel template; the external cylindrical clamping mechanism is a three-jaw chuck, comprising three arc-shaped jaws. The invention has the following beneficial effects: the eccentricity fluctuation of the tooth portion of the circular saw blade substrate is small, the processing accuracy is high, and high-precision circular saw blades can be mass-produced.

Description

Technical Field

[0001] The invention relates to a method and equipment for repairing the eccentricity of a circular saw blade base tooth portion. Background Art

[0002] The quality of circular saw blades is closely related to the processing accuracy of circular saw blades. As the most basic factor of circular saw blades, the eccentricity of the base teeth is one of the important indicators. Large factories at home and abroad have a great demand for high-quality circular saw blades. They pay great attention to sawing quality. Cutting quality has become the first factor they consider, and price is the second factor. However, although the traditional processing technology has a low cost, it is limited by the accuracy of the processing equipment itself, the maintenance status, and the skills of the workers, which makes the eccentricity of the base teeth of the circular saw blade fluctuate greatly. The product quality is affected by this fluctuation, and it is impossible to mass-produce products with high quality requirements. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a method and equipment for repairing the eccentricity of the teeth of a circular saw blade base body, which has high processing accuracy, stable processing and can be processed in batches.

[0004] The method for repairing the eccentricity of the tooth portion of a circular saw blade base body of the present invention is characterized by comprising the following steps:

[0005] 1) Cut the veneer to obtain the saw blade blank, and the saw blade blank has sufficient processing allowance;

[0006] 2) heat-treating the saw blade blank by quenching and tempering to obtain the saw blade blank after heat treatment, wherein the quenching hardness is controlled at HRC59-65 and the tempering hardness is controlled at HRC40-54;

[0007] 3) Using a strong magnet to adsorb and fix the heat-treated saw blade blank so that the heat-treated saw blade blank is in a horizontal state, and then laser cutting the outline of the circular saw blade base; wherein the strong magnetic adsorption heat-treated saw blade blank has no less than 3 adsorption points, and the adsorption points are in the same horizontal plane, and the height difference does not exceed 1 mm;

[0008] 4) Deburr the circular saw blade substrate after laser processing to avoid abnormal vibration of the end face of the circular saw blade substrate caused by scratches during tempering;

[0009] 5) Temper the circular saw blades uniformly after batch deburring at a tempering temperature of 250°C to 350°C;

[0010] 6) Leveling the circular saw blade base after tempering;

[0011] 7) Position and lock the outer circle of the tempered circular saw blade base, adjust the position of the tempered circular saw blade base, keep the center of the tempered circular saw blade base consistent with the processing center of the processing lathe, and then process the center hole of the tempered circular saw blade base.

[0012] Preferably, the circular saw blade after deburring in step 5) is fixed according to the following steps:

[0013] The circular saw blades are grouped according to their outer diameters after deburring, and the outer diameters of the circular saw blades in the same group after deburring are equal;

[0014] Arrange the deburred circular saw blades in groups from bottom to top in descending order of outer diameter, and separate adjacent groups with tool steel templates;

[0015] Center the deburred circular saw blade and tool steel template, press and tighten them, and fully compact them before pressing to eliminate the gap between them in the vertical direction.

[0016] Preferably, each group of deburred circular saw blades has the same number.

[0017] Preferably, the thickness of the tool steel template is greater than 30 mm.

[0018] The clamping device specially used for the method of repairing the eccentricity of the tooth portion of a circular saw blade base body described in the present invention is characterized in that it includes a circular saw blade fixing mechanism for fixing the saw blade blank after heat treatment, a saw blade tempering separation mechanism for fixing the circular saw blade base body after deburring, and an outer circle clamping mechanism for clamping the circular saw blade base body after leveling, the circular saw blade fixing mechanism includes a first supporting base, a central supporting rod, a plurality of pillars and a strong magnet, a plurality of rows of positioning holes are evenly arranged along the radial ray direction from the center of the first supporting base, and a column is detachably mounted on the positioning holes in the same base circle, and the base circle takes the center of the base as the center; the central supporting rod is vertically fixed at the center of the first supporting base, and the top end of the central supporting rod and the top end of the column are kept in the same horizontal plane; the strong magnet is embedded in the top end of the column, and the upper surface of the strong magnet does not exceed the top end face of the column;

[0019] The saw blade tempering separation mechanism comprises a second supporting base, a fastening nut and a tool steel template, the second supporting base comprises a tool steel bottom plate and a center positioning rod, the center positioning rod is vertically installed at the center of the tool steel bottom plate, and the upper part of the center positioning rod is provided with an external thread; a through hole is provided at the center of the tool steel template, the tool steel template and the deburred circular saw blade substrate are alternately sleeved on the center positioning rod; the fastening nut is sleeved on the upper part of the center positioning rod, and the internal thread of the fastening nut is meshed with the external thread of the center positioning rod;

[0020] The outer circle clamping mechanism is a three-jaw chuck, comprising three arc-shaped jaws for clamping on the outer circle of the circular saw blade base to be clamped, the arc-shaped jaws are connected to the motion adjustment mechanism, and the inner side surface of the arc-shaped jaw close to the center of the three-jaw chuck is provided with an arc groove, the arc groove is arranged along the length direction of the arc-shaped jaw, and the curvature radius of the three arc grooves is equal to the radius of the circular saw blade base to be clamped.

[0021] Furthermore, the cross section of the arc groove is rectangular.

[0022] The beneficial effects of the present invention are as follows: the eccentricity of the teeth of the circular saw blade base body fluctuates slightly, the processing accuracy of the circular saw blade is improved, and high-precision circular saw blades can be mass-produced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a process flow chart of the present invention.

[0024] Figure 2a It is a structural diagram of the circular saw blade fixing mechanism of the present invention.

[0025] Figure 2b It is a front view of a saw blade blank after heat treatment fixed on a circular saw blade fixing mechanism of the present invention.

[0026] Figure 2c It is a top view of a saw blade blank after heat treatment fixed on a circular saw blade fixing mechanism of the present invention.

[0027] Figure 2d It is a profile diagram of the circular saw blade substrate after laser processing of the present invention.

[0028] Figure 3 It is a structural diagram of the saw blade tempering separation mechanism of the present invention.

[0029] Figure 4a It is a structural diagram of the outer circle clamping mechanism of the present invention.

[0030] Figure 4b It is a side view of the circular arc shaped claw of the present invention. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings.

[0032] Refer to the attached figure:

[0033] Embodiment 1 The method for repairing the eccentricity of the tooth portion of a circular saw blade base body according to the present invention comprises the following steps:

[0034] 1) Cut the veneer to obtain the saw blade blank, and the saw blade blank has sufficient processing allowance and is not restricted in shape (circular, square, polygonal);

[0035] 2) heat-treating the saw blade blank by quenching and tempering to obtain the saw blade blank after heat treatment, wherein the quenching hardness is controlled at HRC59-65 and the tempering hardness is controlled at HRC40-54;

[0036] 3) Using a strong magnet to adsorb and fix the heat-treated saw blade blank so that the heat-treated saw blade blank is in a horizontal state, and then laser cutting the outline of the circular saw blade base; wherein the strong magnetic adsorption heat-treated saw blade blank has no less than 3 adsorption points, and the adsorption points are in the same horizontal plane, and the height difference does not exceed 1 mm;

[0037] 4) Deburr the circular saw blade substrate after laser processing to avoid abnormal vibration of the end face of the circular saw blade substrate caused by scratches during tempering;

[0038] 5) Temper the circular saw blades uniformly after batch deburring at a tempering temperature of 250°C to 350°C;

[0039] 6) Use a special hammer and a special level ruler to level the tempered circular saw blade substrate, so that the flatness of the circular saw blade is improved;

[0040] 7) Position and lock the outer circle of the circular saw blade base, and keep the center of the circular saw blade base consistent with the processing center of the processing lathe, and then process the center hole of the circular saw blade base.

[0041] Embodiment 2 A clamping device specially used for the method of repairing the eccentricity of the tooth portion of a circular saw blade base body according to Embodiment 1 comprises a circular saw blade fixing mechanism 1, a saw blade tempering separation mechanism 2 and an outer circle clamping mechanism 3, wherein the circular saw blade fixing mechanism 1 comprises a first supporting base 11, a central supporting rod 12, a plurality of pillars 13 and a strong magnet 14, a plurality of rows of positioning holes 111 are evenly arranged along the radial ray direction from the center of the first supporting base 11, and the pillars 13 are detachably mounted on the positioning holes 111 on the same base circle, and the base circle takes the center of the base as the center; the central supporting rod 12 is vertically fixed at the center of the first supporting base 11, and keeps the top end of the central supporting rod 12 and the top end of the pillar 13 on the same horizontal plane; the strong magnet 14 is embedded in the top end of the pillar 13, and the upper surface of the strong magnet 14 does not exceed the top end surface of the pillar 13;

[0042] The saw blade tempering separation mechanism 2 includes a second support base 21, a fastening nut 22 and a tool steel template 23. The second support base 21 includes a tool steel bottom plate 211 and a center positioning rod 212. The center positioning rod 212 is vertically installed at the center of the tool steel bottom plate 211, and the upper part of the center positioning rod 212 is provided with an external thread; a through hole is provided at the center of the tool steel template 23, and the tool steel template 23 and the deburred circular saw blade base 24 are alternately sleeved on the center positioning rod 212; the fastening nut 22 is sleeved on the upper part of the center positioning rod 212, and the internal thread of the fastening nut 22 is meshed with the external thread of the center positioning rod 212, which is used to press the tool steel template 23 and the deburred circular saw blade base 24;

[0043] The outer circle clamping mechanism 3 is a three-jaw chuck, comprising three arc-shaped jaws 31 for clamping on the outer circle of the circular saw blade base to be clamped, the arc-shaped jaws 31 are connected to the motion adjustment mechanism, and the inner side surface of the arc-shaped jaw 31 close to the center of the three-jaw chuck is provided with an arc groove 311, the arc groove 311 is arranged along the length direction of the arc-shaped jaw 31, and the curvature radius of the three arc grooves 311 is equal to the radius of the circular saw blade base to be clamped.

[0044] The cross section of the arc groove 311 is rectangular.

[0045] The circular saw blade fixing mechanism 1 is used for adsorbing and fixing the saw blade blank 15 after heat treatment. When in use, first adjust the position of the column 13, and then place the saw blade blank 15 after heat treatment horizontally on the top of the column 13. At this time, the strong magnet 14 on the top of the column 13 will be adsorbed on the surface of the saw blade blank 15 after heat treatment. Since the adsorption points of the strong magnets are in the same horizontal plane, the height difference is ≤1mm, so that the saw blade blank 15 after heat treatment is in a horizontal state.

[0046] The saw blade tempering separation mechanism 2 is used to fix the circular saw blade base body after deburring in batches, and is used in accordance with the following steps:

[0047] First, the deburred circular saw blades are grouped according to their outer diameters, and the deburred circular saw blades in the same group have the same outer diameters, and the number of deburred circular saw blades in each group is the same;

[0048] Secondly, the deburred circular saw blades 25 are arranged in groups from bottom to top in descending order according to their outer diameters, and adjacent groups are separated by tool steel templates 23, wherein the thickness of the tool steel templates 23 is greater than 30 mm;

[0049] Next, the deburred circular saw blade 25 and the tool steel template 23 are centrally positioned by the center positioning rod 212, and are fully locked at the top of the tooling using the fastening nut 22. Before locking, a hydraulic device is used to fully compact them to eliminate the gap between them in the vertical direction.

[0050] The outer circle clamping mechanism 3 is used to clamp the leveled circular saw blade base. When in use, the arc-shaped claw is clamped at the outer circle edge of the leveled circular saw blade base 32, and the outer edge of the leveled circular saw blade base 32 is tightly attached to the bottom of the arc groove; since the curvature radius of the three arc grooves is equal to the radius of the leveled circular saw blade base, it is only necessary to adjust the concentricity of the three-jaw chuck to be consistent with the processing center of the processing lathe to ensure that the center of the leveled circular saw blade base 32 is consistent with the processing center of the processing lathe, and the leveled circular saw blade base 32 can be processed to obtain the final circular saw blade product.

[0051] The contents described in the embodiments of this specification are merely an enumeration of implementation forms of the inventive concept. The protection scope of the present invention should not be regarded as limited to the specific forms described in the embodiments. The protection scope of the present invention also includes equivalent technical means that can be thought of by those skilled in the art based on the inventive concept.

Claims

1. A method for repairing the eccentricity of the tooth portion of a circular saw blade base, characterized in that: The following steps are involved: 1) Cut the veneer to obtain the saw blade blank, and the saw blade blank has sufficient processing allowance; 2) heat-treating the saw blade blank by quenching and tempering to obtain the saw blade blank after heat treatment, wherein the quenching hardness is controlled at HRC59-65 and the tempering hardness is controlled at HRC40-54; 3) Using a strong magnet to adsorb and fix the heat-treated saw blade blank so that the heat-treated saw blade blank is in a horizontal state, and then laser cutting the outline of the circular saw blade base; wherein the strong magnetic adsorption heat-treated saw blade blank has no less than 3 adsorption points, and the adsorption points are in the same horizontal plane, and the height difference does not exceed 1 mm; 4) Deburr the circular saw blade substrate after laser processing to avoid abnormal vibration of the end face of the circular saw blade substrate caused by scratches during tempering; 5) Temper the circular saw blades uniformly after batch deburring at a tempering temperature of 250°C to 350°C; The deburred circular saw blade is fixed according to the following steps: The circular saw blades are grouped according to their outer diameters after deburring, and the outer diameters of the circular saw blades in the same group after deburring are equal; Arrange the deburred circular saw blades in groups from bottom to top in descending order of outer diameter, and separate adjacent groups with tool steel templates; Center the deburred circular saw blade and tool steel template, press and tighten them, and fully compact them before pressing to eliminate the gap between them in the vertical direction; 6) Leveling the circular saw blade base after tempering; 7) Position and lock the outer circle of the tempered circular saw blade base, adjust the position of the tempered circular saw blade base, keep the center of the tempered circular saw blade base consistent with the processing center of the processing lathe, and then process the center hole of the circular saw blade base.

2. A method for repairing eccentricity of a circular saw blade base tooth portion according to claim 1, characterized in that: The number of circular saw blades after deburring is the same in each group.

3. A method for repairing eccentricity of a circular saw blade base tooth portion according to claim 2, characterized in that: The thickness of the tool steel template is greater than 30 mm.

4. The device constructed by the method for repairing the eccentricity of the tooth portion of a circular saw blade base body according to any one of claims 1 to 3, characterized in that: It comprises a circular saw blade fixing mechanism, a saw blade tempering separation mechanism and an outer circle clamping mechanism, wherein the circular saw blade fixing mechanism comprises a first supporting base, a central supporting rod, a plurality of pillars and a strong magnet, a plurality of rows of positioning holes are evenly arranged along the radial ray direction from the center of the first supporting base, and the pillars are detachably mounted on the positioning holes in the same base circle, and the base circle takes the center of the base as the center; the central supporting rod is vertically fixed at the center of the first supporting base, and the top end of the central supporting rod and the top end of the pillar are kept in the same horizontal plane; the strong magnet is embedded in the top end of the pillar, and the upper surface of the strong magnet does not exceed the top end surface of the pillar; The saw blade tempering separation mechanism comprises a second supporting base, a fastening nut and a tool steel template, the second supporting base comprises a tool steel bottom plate and a center positioning rod, the center positioning rod is vertically installed at the center of the tool steel bottom plate, and the upper part of the center positioning rod is provided with an external thread; a through hole is provided at the center of the tool steel template, the tool steel template and the deburred circular saw blade substrate are alternately sleeved on the center positioning rod; the fastening nut is sleeved on the upper part of the center positioning rod, and the internal thread of the fastening nut is meshed with the external thread of the center positioning rod; The outer circle clamping mechanism is a three-jaw chuck, comprising three arc-shaped jaws for clamping on the outer circle of the circular saw blade base to be clamped, the arc-shaped jaws are connected to the motion adjustment mechanism, and the inner side surface of the arc-shaped jaw close to the center of the three-jaw chuck is provided with an arc groove, the arc groove is arranged along the length direction of the arc-shaped jaw, and the curvature radius of the three arc grooves is equal to the radius of the circular saw blade base to be clamped.

5. The device constructed by the method for repairing the eccentricity of the tooth portion of a circular saw blade base body according to claim 4, characterized in that: The cross section of the arc groove is rectangular.

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