Assembly process for electrical planer hub blades

Abstract

This invention discloses an assembly process for electric planer hub inserts. It includes a fixture, in which the hub is placed into a semi-circular groove. A reference plate on the fixture is used to quickly and accurately install and adjust the insert's position, followed by confirmation and fine-tuning using a calibration table. Beneficial effects: By setting reference lines or surfaces along the edge of the semi-circular groove of the mounting base, the operator can quickly adjust the insert at these reference points, significantly reducing the subsequent adjustment time on the calibration table and achieving three to five times the work efficiency. Simultaneously, it reduces the technical and skill requirements for operators, thereby lowering labor costs.

Description

Technical Field

[0001] This invention relates to the field of power tool technology, and more specifically, to an assembly process for electric planer hub blades. Background Technology

[0002] electric planer Figure 1 , Figure 2 As shown, this is an electric planer that uses a motor to drive the blade hub to rotate, and the blades mounted on the hub to plan wood materials. It features high production efficiency and produces a smooth, flat planed surface. It is widely used in building construction, home decoration, woodworking workshops, field woodworking, and in vehicle, ship, and bridge construction, for various tasks such as planing, chamfering, and raking of wood. The planing operation of an electric planer is mainly accomplished by the blades mounted on the blade hub; therefore, the quality of planing depends primarily on whether the blade edges are properly leveled.

[0003] In existing technologies, the installation and position adjustment of blades on the blade hub are done manually by the operator. For example, Chinese invention patent document (patent number: 2018114053248, application date: November 23, 2018) discloses a handheld electric planer and its application method, including a planer blade assembly, a drive device, and a base plate. The base plate has a groove, and the drive device drives the planer blade assembly to rotate within the groove. The planer blade assembly includes a blade holder, blades, and a blade adjustment cover. The blade holder and the blade adjustment cover are fastened together by a connector. The blades are located between the blade adjustment cover and the blade holder, and an elastic member is provided between the blades and the blade adjustment cover. This invention provides an elastic member between the blade adjustment cover and the blades. When setting the blades on the electric planer, the blades can be adjusted slightly relative to the blade adjustment cover on the blade holder under the action of the elastic member, thereby ensuring that the blades are always on the same plane relative to the base plate, ensuring the flatness of the planing.

[0004] In the existing technical solution, the operator needs to repeatedly adjust and check the position of the blade on the blade holder relative to the adjusting cover during installation and adjustment to achieve satisfactory installation results. This places high demands on the operator's technical skill and proficiency, and the work efficiency is relatively low. Summary of the Invention

[0005] To overcome the above-mentioned defects, the technical problem to be solved by the present invention is to provide an assembly process for electric planer hub blades. This assembly process does not require much skill or proficiency from the operator, but can quickly, accurately, and efficiently complete the assembly and adjustment of the hub blade position.

[0006] The technical solution of this invention to solve the problems existing in the prior art is: an assembly process for electric planer hub inserts, which includes a hub, insert pressure plate, insert, tool holder, internal hex screws, internal hex wrenches, external hex screws, and external hex wrenches. It also includes a tooling, which includes a base plate and a semi-circular mounting base fixedly connected to the base plate. The upper side of the mounting base is respectively provided with a large semi-circular groove and a small semi-circular groove that mate with the hub and the hub shaft of the hub. The base plate is provided with a fixed seat on one side of the mounting base, which is arranged parallel to the mounting base. Two calibration gauges arranged along the axial direction of the mounting base are fixedly connected to the fixed seat. The test head of the calibration gauge penetrates through the side wall of the large semi-circular groove and protrudes from the side wall of the large semi-circular groove. The mounting base has a reference plate on the side near the fixed base, with the reference surface of the reference plate facing the large semicircular groove. Assembly process steps: Step 1: Place the tool hub (completed in the previous process) into the large semicircular groove, and place the two ends of the tool hub shaft into the two smaller semicircular grooves on both sides; Step 2: Tighten three external hex screws and two internal hex screws clockwise into the tool holder; Step 3: Arrange the tool holder, blade, and blade pressure plate sequentially into the tool slot of the tool hub, so that the blade pressure plate abuts against the inclined side wall of the tool slot, and the gap between the two end faces of the blade and the two end faces of the large semicircular groove is equal. Then, rotate the external hex screw counterclockwise with appropriate force. Step 4: Rotate the blade hub and gently press the blade edge against the upper side of the reference surface. Use an Allen wrench and an external Allen wrench to adjust the Allen screws so that the blade edge is parallel to the upper side of the reference surface. Step 5: Continue rotating the blade hub and gently slide the blade edge over the two test heads to confirm whether the readings on the two calibration gauges meet the specified requirements. If there is a slight error, you can fine-tune the external and internal Allen screws at the blade position until it meets the specified requirements. Step 6: Repeat steps 2 to 5 to assemble and adjust the other blade on the blade hub. The mounting base in this invention serves as the base component for assembling and adjusting the blade hub and cutting tool. The purpose of providing a large semi-circular groove and a small semi-circular groove on the upper side of the mounting base to stably, reliably, and rotatably place the blade hub. A reference plate is provided on the upper side of the mounting base near the fixed base, with the reference surface of the reference plate facing the large semi-circular groove. This reference surface can serve as a preliminary reference for operators to visually inspect whether the cutting edge of the blade is installed accurately, thus significantly improving the efficiency of subsequent calibration. Since visual inspection cannot achieve complete accuracy, a calibration table needs to be installed on the tooling to ensure accurate installation of the cutting edge.

[0007] Preferably, the angle between the upper side of the reference plate and the reference surface is less than 90°. In this way, the upper side of the reference surface becomes a reference line, which can improve the reliability of visual inspection by operators. At the same time, in addition to being relatively close to the reference line, the blade moves further and further away from the reference surface as the blade hub rotates, which can ensure the safety of the blade.

[0008] Preferably, the side of the mounting base closest to the fixed base is arranged at an angle higher than the other side. This conforms to ergonomic principles, allowing the operator to maintain a comfortable seated posture while working.

[0009] Beneficial effects: The technical solution of the present invention sets a reference line or reference surface at the edge of the semi-circular groove of the mounting base, so that the operator can quickly adjust the blade at the reference line or reference surface, which greatly shortens the adjustment time at the calibration table and achieves three to five times the work efficiency. At the same time, it can reduce the technical requirements and proficiency requirements of the operator, thereby reducing the labor cost. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of an electric planer;

[0011] Figure 2 yes Figure 1 Schematic diagram of the cross section of AA;

[0012] Figure 3 This is a three-dimensional schematic diagram of the tooling in this invention;

[0013] Figure 4 This is a schematic diagram of the tooling with a tool hub in this invention;

[0014] Figure 5 This is a top view schematic diagram of the tooling structure with the tool hub placed in this invention;

[0015] Figure 6 yes Figure 5 Cross-sectional view of BB;

[0016] Figure 7 yes Figure 6 Enlarged schematic diagram of the middle R section;

[0017] Figure 8 This is a three-dimensional schematic diagram of the blade hub assembly in this invention.

[0018] In the diagram: 1. Tool hub; 2. Mounting base; 3. Detection head; 4. Large semi-circular groove; 5. Base plate; 6. Calibration table; 7. Fixing base; 8. Reference plate; 9. Blade; 10. Reference surface; 11. External hex screw; 12. Tool holder; 13. Internal hex screw; 14. Blade pressure plate. Implementation

[0019] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0020] Example: An assembly process for electric planer hub inserts, wherein the tooling for the assembly process is as follows: Figure 3 , Figure 6 As shown, it includes a base plate 5 and a semi-circular mounting base 2 fixedly connected to the base plate 5. The upper side of the mounting base 2 is provided with a large semi-circular groove 4 and a small semi-circular groove that mate with the cutter hub 1 and the cutter hub shaft of the cutter hub 1, respectively. The base plate 5 is provided with a fixed base 7 arranged parallel to the mounting base 2 on one side of the mounting base 2. Two calibration gauges 6 arranged along the axial direction of the mounting base 2 are fixedly connected to the fixed base 7. The test head 3 of the calibration gauge 6 penetrates through the side wall of the large semi-circular groove 4 and protrudes from the side wall of the large semi-circular groove 4. The side of the upper side of the mounting base 2 near the fixed base 7 is inclined higher than the other side. The upper side of the mounting base 2 near the fixed base 7 is provided with a reference plate 8. The reference surface 10 of the reference plate 8 faces the large semi-circular groove 4. The included angle between the upper side of the reference plate 8 and the reference surface 10 is 75°. The difference between the axial width of the large semi-circular groove 4 and the width of the blade 9 is 2 mm.

[0021] Assembly process: See Figures 4 to 8 As shown, the parts required in this assembly process are: blade hub 1, blade pressure plate 14, blade 9, blade holder 12, internal hex screw 13, and external hex screw 11; the tools required are: fixtures, internal hex wrench, and external hex wrench.

[0022] Step 1: Place the cutter hub 1, which has been completed in the previous process, into the large semi-circular groove 4, and place the two ends of the cutter hub shaft of the cutter hub 1 into the small semi-circular grooves on both sides.

[0023] Step 2: Screw the three external hex screws 11 and the two internal hex screws 13 clockwise into the tool holder 12;

[0024] Step 3: Arrange the tool holder 12, blade 9, and blade pressure plate 14 sequentially into the tool slot of the tool hub 1, so that the blade pressure plate 14 abuts against the inclined side wall of the tool slot, and the gaps between the two end faces of the blade 9 and the two end faces of the semi-circular groove 4 are equal. Then, use appropriate force to rotate the external hexagonal screw 11 counterclockwise until the blade 9 is initially fixed.

[0025] Step 4: Rotate the blade hub 1 and gently bring the cutting edge of the blade 9 against the upper side of the reference surface 10. Use an internal hex wrench and an external hex wrench to adjust the internal hex screw 13 and external hex screw 11 so that the cutting edge of the blade 9 is parallel to the upper side of the reference surface 10.

[0026] Step 5: Continue to rotate the blade hub 1 so that the blade 9 can gently slide over the two test heads 3. Confirm whether the readings on the two calibration gauges 6 meet the specified requirements. If there is a slight error, you can fine-tune the external hex screw 11 and internal hex screw 13 at the position of the blade 9 until they meet the specified requirements.

[0027] Step 6: Repeat steps 2 to 5 to complete the assembly and adjustment of the other blade 9 on the blade hub 1.

[0028] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. An assembly process for electric planer blade hub inserts, comprising a blade hub, insert pressure plate, insert, blade holder, internal hex screws, internal hex wrench, external hex screws, and external hex wrench, characterized in that: It also includes tooling, which includes a base plate and a semi-circular mounting base fixedly connected to the base plate. The upper side of the mounting base is provided with a large semi-circular groove and a small semi-circular groove that mate with the tool hub and the tool hub shaft of the tool hub. The base plate is provided with a fixed seat arranged parallel to the mounting base on one side of the mounting base. Two calibration gauges arranged along the axial direction of the mounting base are fixedly connected to the fixed seat. The test head of the calibration gauge penetrates through the side wall of the large semi-circular groove and protrudes from the side wall of the large semi-circular groove. A reference plate is provided on the upper side of the mounting base near the fixed seat, and the reference surface of the reference plate faces the large semi-circular groove. Assembly process steps: Step 1: Place the tool hub completed in the previous process into the large semi-circular groove, and place the two ends of the tool hub shaft into the small semi-circular grooves on both sides; Step 2: Screw three external hex screws and two internal hex screws clockwise into the tool holder; Step 3: Place the tool... The holder, blade, and blade pressure plate are arranged sequentially in the blade slot of the blade hub, with the blade pressure plate abutting against the inclined side wall of the blade slot. The gaps between the two end faces of the blade and the two end faces of the semi-circular groove are equal. Then, the external hex screw is rotated counterclockwise with appropriate force until the blade is initially fixed. Step four: Rotate the blade hub and gently abut the blade edge against the upper side of the reference surface. Use an internal hex wrench and an external hex wrench to adjust the internal hex screw and external hex screw so that the blade edge is parallel to the upper side of the reference surface. Step five: Continue to rotate the blade hub and gently slide the blade edge over the two test heads to confirm whether the readings on the two calibration gauges meet the specified requirements. If there is a slight error, the external hex screw and internal hex screw at the blade position can be finely adjusted again until the specified requirements are met. Step six: Repeat steps two to five to complete the assembly and adjustment of the other blade on the blade hub.

2. The assembly process for electric planer hub inserts according to claim 1, characterized in that: The angle between the upper side of the reference plate and the reference surface is less than 90°.

3. The assembly process for electric planer hub inserts according to claim 1 or 2, characterized in that: The side of the mounting base closest to the fixed base is arranged at an angle higher than the other side.

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