Manual edge trimmer

Abstract

The utility model discloses a manual trimmer, which relates to the technical field of trimmers, and comprises a handle, a guide wheel and a cutter, one end of the handle is provided with a grip, the other end of the handle is connected with the guide wheel and the cutter, the end part of the grip is sequentially connected with a first bending surface and a second bending surface, the guide wheel is detachably arranged on the first bending surface, and the guide wheel is detachably arranged on the second bending surface. The cutter is detachably arranged on the second bending face, the material of the cutter is matched with the workpiece, when the guide wheel is connected to one side wall of the workpiece in a rolling mode, the cutter cuts a vertex angle of the workpiece, and the first bending face does not make contact with the workpiece. The manual chamfering device disclosed by the utility model is portable, the cutter can be quickly replaced, the chamfering operation can be smoothly carried out in a labor-saving manner, and the chamfering working efficiency and the chamfering processing quality can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of trimmers, in particular to a manual trimmer. Background Art

[0002] In the production of mechanical metal parts, such as chamfering or injection molding, workpieces often require chamfering and trimming R-angles. Traditional chamfering machines come in three types: manual, benchtop, and pneumatic portable. Traditional manual trimmers have mediocre results due to their curved bar heads, poor chamfering quality and effectiveness, and low adoption and efficiency. Benchtop chamferers are large and bulky, lacking functionality and portability, resulting in low adoption. Pneumatic chamfering machines are difficult to operate, require air power, are relatively expensive, and have a low adoption rate.

[0003] Therefore, traditional manual trimmers have disadvantages such as low cutting performance, poor sharpness and wear resistance, sticking to the knife, low smoothness, and laborious cutting. Utility Model Content

[0004] The purpose of the utility model is to provide a manual trimmer to solve the problems existing in the above-mentioned prior art, so that the manual operation of the trimmer is convenient and fast, the knife does not stick, and the chamfering quality and efficiency are improved.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The utility model provides a manual trimmer, comprising a handle, a guide wheel and a tool, wherein one end of the handle is provided with a grip, and the other end is connected to the guide wheel and the tool, the ends of the handle are sequentially connected to a first bending surface and a second bending surface, the guide wheel is detachably arranged on the first bending surface, and the tool is detachably arranged on the second bending surface, the material of the tool matches the workpiece, and when the guide wheel is rollingly connected to a side wall of the workpiece, the tool cuts a top corner of the workpiece, and the first bending surface does not contact the workpiece.

[0007] Preferably, the angle between the first bending surface and the second bending surface is 70°-100°, the angle between the second bending surface and the side wall of the workpiece is 30°-70°, and the tool is arranged parallel to the inner side surface of the second bending surface.

[0008] Preferably, the cutting edge of the tool is a straight edge or an arc. When the cutting edge is a straight edge, the tool is a CNC blade; when the cutting edge is an arc, the tool is provided with several models according to the chamfer radius size, so that the radius of the arc matches the chamfer radius of the workpiece.

[0009] Preferably, the tool is connected to the middle of the second bending surface by bolts, and the cutting angle of the CNC blade is 30°-50° in both the pitch direction and the horizontal direction.

[0010] Preferably, the material of the tool includes steel, cast iron, aluminum alloy, titanium alloy, copper, aluminum, plastic, acrylic or phenolic, and the hardness of the material of the tool is the same as or similar to the hardness of the workpiece.

[0011] Preferably, the guide wheel is a bearing with a radius of 3mm-5mm, and the bearing is rotatably connected to a shaft assembly.

[0012] Preferably, the shaft assembly includes a bolt and a sleeve, one end of the sleeve is connected to the bearing by a bolt, and the other end is connected to the handle by a bolt, the outer diameter of the bearing is larger than the outer diameter of the sleeve, and the inner diameter is smaller than the outer diameter of the sleeve; the bearing includes a non-metallic nylon bearing, a wear-resistant polyurethane bearing or a long-life self-lubricating copper sleeve bearing.

[0013] Preferably, the length of the sleeve is 5mm-10mm, and the distance between the edge of the sleeve and the handle and the distance between the edge of the sleeve and the tool are both 1mm-3mm.

[0014] Preferably, the handle is a metal plate or an injection molded part with a thickness of 1mm-3mm. When the handle is a metal plate, a plastic tube or a heat shrink tube is provided on the handle; when the handle is an injection molded part, a knife groove is provided in the middle of the handle, and a magnetic sheet is provided in the knife groove, and the magnetic sheet adsorbs a spare knife through magnetic force.

[0015] Preferably, the handle is at least 5 cm long, and a through hole is provided at the tail of the handle, and the through hole is used to pass a lanyard.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] The manual chamfering tool of the utility model is portable and can quickly change cutting tools. It can not only perform chamfering operations very labor-savingly and smoothly, but also improve the chamfering work efficiency and chamfering processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1This is a schematic diagram of the first structure of the manual trimmer in the embodiment of the utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the first structure of the manual trimmer in the embodiment of the utility model. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the first structure of the manual trimmer in the embodiment of the utility model. Figure 3 ;

[0022] Figure 4 This is a schematic diagram of the second structure of the manual trimmer in the embodiment of the utility model. Figure 1 ;

[0023] Figure 5 This is a schematic diagram of the second structure of the manual trimmer in the embodiment of the utility model. Figure 2 ;

[0024] Figure 6 This is a schematic diagram of the second structure of the manual trimmer in the embodiment of the utility model. Figure 3 ;

[0025] In the figure: 1-handle, 2-guide wheel, 3-tool, 4-first bending surface, 5-second bending surface, 6-bolt, 7-sleeve, 8-spare tool, 9-through hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The purpose of the utility model is to provide a manual trimmer to solve the problems existing in the prior art, so that the manual operation of the trimmer is convenient and fast, the knife does not stick, and the chamfering quality and efficiency are improved.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0029] Example 1

[0030] like Figures 1 to 6As shown, a manual trimmer is provided in this embodiment, including a handle 11, a guide wheel 2 and a tool 3. A grip is provided at one end of the handle 11, and the other end is connected to the guide wheel 2 and the tool 3. The ends of the grip are connected to a first bending surface 4 and a second bending surface 5 in sequence. The guide wheel 2 is detachably arranged on the first bending surface 4, and the tool 3 is detachably arranged on the second bending surface 5. The material of the tool 3 matches the workpiece. When the guide wheel 2 is rolled and connected to a side wall of the workpiece, the tool 3 cuts a top corner of the workpiece, and the first bending surface 4 does not contact the workpiece.

[0031] As an optional solution, in this embodiment, the angle between the first curved surface 4 and the second curved surface 5 is 70°-100°, the angle between the second curved surface 5 and the side wall of the workpiece is 30°-70°, and the tool 3 is arranged parallel to the inner side of the second curved surface 5. In this embodiment, the second curved surface 5 is an inclined plane, which forms an angle with both the horizontal and vertical planes during use to facilitate chip removal; the special shape and bending angle of the handle 1 further facilitate force in the pulling direction.

[0032] As an optional solution, the cutting edge of the tool 3 in this embodiment is a straight edge or a circular arc. When the cutting edge is a straight edge, the tool 3 is a CNC blade, preferably a square turning blade, to chamfer the workpiece. The CNC blade has the advantages of being sharp and wear-resistant, non-stick, having smooth chip removal, and having a high degree of finish, which can better improve the quality of chamfering. When the cutting edge is a circular arc, the tool 3 can be customized according to demand. The tool 3 is provided with several models according to the chamfer radius size so that the radius of the arc matches the chamfer radius of the workpiece. In this embodiment, a CNC blade can also be used for chamfering. During operation, the deflection angle of the tool 3 is slightly adjusted, and the operation can be repeated several times.

[0033] As an optional solution, in this embodiment, the tool 3 is connected to the middle of the second bending surface 5 by a bolt 6. The cutting angle of the CNC blade is: 30°-50° in both the pitch direction and the horizontal direction. The installation pitch angle and horizontal swing angle are usually best at 45°, which is more conducive to labor-saving chamfering and chip removal.

[0034] As an optional solution, the material of the tool 3 in this embodiment includes steel (stainless steel), cast iron, aluminum alloy, titanium alloy, copper or aluminum, and can also be non-metallic materials such as plastic, acrylic or phenolic. The excellent cutting performance of the CNC blade can be used to make the chamfering of the workpiece efficient; the CNC blade can be replaced according to the material of different workpieces, and the appropriate CNC blade can be selected. The material hardness of the tool 3 is the same or similar to the hardness of the workpiece to avoid tool sticking.

[0035] As an optional solution, in this embodiment, the guide wheel 2 is a bearing with a radius of 3mm-5mm, and the bearing is rotatably connected to a shaft assembly. The side wall of the workpiece can be used to assist in positioning the chamfering path of the cutting to ensure the chamfering quality.

[0036] As an optional solution, the shaft assembly in this embodiment includes a bolt 6 and a sleeve 7. One end of the sleeve 7 is connected to the bearing via the bolt 6. The outer diameter of the bearing 6 is larger than the outer diameter of the sleeve 7, and the inner diameter is smaller than the outer diameter of the sleeve 7. The thickness of the bearing in this embodiment is 3 mm, which limits the bearing, making the chamfering process labor-saving and the lines more beautiful. The other end is connected to the handle 1 via the bolt 6. Preferably, the sleeve 7 and the first bending surface 4 of the handle 1 are set at an angle of 70°-90° to facilitate the handle 1 to be raised for gripping. Among them, the bearing includes a non-metallic nylon bearing, a wear-resistant polyurethane bearing, or a long-life self-lubricating copper sleeve bearing. The guide wheel 2 uses the side wall of the workpiece to constrain the cutting path, and the use of the bearing has low motion damping, which is more labor-saving.

[0037] As an optional solution, the length of the sleeve 7 in this embodiment (the distance from the first bending surface 4) is 5mm-10mm, which is convenient for rolling contact with the side of the workpiece and reserves chamfer space. The edge distance between the sleeve 7 and the handle 1 and the edge distance between the sleeve 7 and the tool 3 are both 1mm-3mm, which is convenient for reserving cutting space for the tool 3.

[0038] As an optional solution, the handle 1 in this embodiment is a metal plate or injection molded part with a thickness of 1mm-3mm. When the handle 1 is a metal plate, a plastic tube or heat shrink tube is provided on the handle 1 to increase the friction and comfort of holding. When the handle 1 is an injection molded part, a knife groove is provided in the middle of the handle 1, and a magnetic sheet is provided in the knife groove. The magnetic sheet adsorbs a spare tool 8 through magnetic force. The spare tool 8 can also be a tool 3 of other models. The provision of the knife groove can facilitate the storage of the tool 3. In the embodiment, the handle 1 can be a multi-bend sheet metal part with a thickness of 1mm, such as Figure 1 As shown; it can also be an integrally formed injection molded part, and the injection molded part can be a horizontal flat long part (such as Figure 1 It can also be a vertical elongated piece, and a gripping groove is provided at the lower end of the vertical elongated piece (as shown); Figure 4 shown).

[0039] As an optional solution, in this embodiment, the handle 1 is at least 5 cm long, which is long enough for one-handed holding. A through hole 9 is provided at the tail of the handle 1, and the through hole 9 is used to pass a hanging rope for easy storage.

[0040] Example 2

[0041] When the manual trimmer in this embodiment is used, the tool handle is held in the hand, the guide wheel 2 is pressed against the side wall of the workpiece to be processed, and the blade of the tool 3 is pressed against the unburred corners of the workpiece for cutting. When the handle 1 is pulled, the tool head moves along the side wall of the workpiece for cutting. The handle 1 can be fine-tuned in the left and right and high and low pitch directions. The angle can be fine-tuned by adjusting the installation angle of the tool 3 (the tool 3 can also be set at an angle with the installation surface and not fit tightly). The distance between the guide wheel 2 and the first bending surface 4 determines the pitch direction and cutting angle of the tool 3. The angle can be fine-tuned by replacing the shaft sleeves of different lengths, so that the best cutting effect can be achieved. The guide wheel 2 can assist in positioning the chamfering path of the cutting. Due to the problem of the cutting angle of the CNC tool head, chip removal is very smooth, and it can be operated in a fool-proof manner.

[0042] The manual trimmer of this embodiment has better performance than the traditional manual trimmer, the chamfering quality and efficiency are improved, the manual chamfering and broaching operation is more labor-saving, has a long service life, is widely used, is easy to carry, and has low cost.

[0043] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A manual trimmer, characterized by: It includes a handle, a guide wheel and a tool. One end of the handle is provided with a grip, and the other end is connected to the guide wheel and the tool. The ends of the handle are connected to a first bending surface and a second bending surface in sequence. The guide wheel is detachably arranged on the first bending surface, and the tool is detachably arranged on the second bending surface. The material of the tool matches the workpiece. When the guide wheel is rolled and connected to a side wall of the workpiece, the tool cuts a top corner of the workpiece, and the first bending surface does not contact the workpiece.

2. The manual trimmer according to claim 1, characterized in that: The included angle between the first bending surface and the second bending surface is 70°-100°, the included angle between the second bending surface and the side wall of the workpiece is 30°-70°, and the tool is arranged parallel to the inner side surface of the second bending surface.

3. The manual trimmer according to claim 1, characterized in that: The cutting edge of the tool is a straight edge or an arc. When the cutting edge is a straight edge, the tool is a CNC blade; when the cutting edge is an arc, the tool is provided with several models according to the chamfer radius size, so that the radius of the arc matches the chamfer radius of the workpiece.

4. The manual trimmer according to claim 3, characterized in that: The tool is connected to the middle of the second bending surface by bolts, and the cutting angle of the CNC blade is 30°-50° in both the pitch direction and the horizontal direction.

5. The manual trimmer according to claim 1, characterized in that: The tool is made of steel, cast iron, aluminum alloy, titanium alloy, copper, aluminum or plastic, and the hardness of the tool is the same as or similar to the hardness of the workpiece.

6. The manual trimmer according to claim 1, characterized in that: The guide wheel is a bearing with a radius of 3mm-5mm, and the bearing is rotatably connected to a shaft assembly.

7. The manual trimmer according to claim 6, characterized in that: The shaft assembly includes a bolt and a sleeve, one end of the sleeve is connected to the bearing by a bolt, and the other end is connected to the handle by a bolt, the outer diameter of the bearing is larger than the outer diameter of the sleeve, and the inner diameter is smaller than the outer diameter of the sleeve; the bearing is a non-metallic nylon bearing, a wear-resistant polyurethane bearing or a long-life self-lubricating copper sleeve bearing.

8. The manual trimmer according to claim 7, characterized in that: The length of the shaft sleeve is 5mm-10mm, and the distance between the shaft sleeve and the edge of the handle and the distance between the shaft sleeve and the edge of the tool are both 1mm-3mm.

9. The manual trimmer according to claim 1, characterized in that: The handle is a metal plate or injection molded part with a thickness of 1mm-3mm. When the handle is a metal plate, a plastic tube or a heat shrink tube is provided on the handle; when the handle is an injection molded part, a knife groove is provided in the middle of the handle, and a magnetic sheet is provided in the knife groove. The magnetic sheet adsorbs a spare knife through magnetic force.

10. The manual trimmer according to claim 1, characterized in that: The handle is at least 5 cm long, and a through hole is provided at the tail of the handle, and the through hole is used for passing a hanging rope.

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