ER knife handle disassembling and assembling tool and using method thereof

Abstract

The invention discloses an ER knife handle disassembling and assembling tool which comprises a shell, an auxiliary gear assembly, a gear connecting assembly and a gear rotating assembly, the auxiliary gear assembly is pivotally connected to one end of the shell, the gear connecting assembly is pivotally connected to the other end of the shell, and the gear rotating assembly penetrates through the side face of the shell to be arranged; the gear rotating assembly is arranged on the gear connecting assembly and meshed with the auxiliary gear assembly and the gear connecting assembly, the gear rotating assembly is configured to be capable of rotating around a first axis so as to drive the auxiliary gear assembly and the gear connecting assembly to synchronously rotate around a second axis, and the first axis and the second axis are orthogonally arranged. The second axis coincides with the central axis of the shell, and the gear rotating assembly is configured to be capable of driving a locking nut on the ER knife handle to rotate, so that the ER knife handle is disassembled and assembled. The invention further discloses a using method of the ER cutter handle disassembling and assembling tool.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and particularly to an ER tool holder disassembly and assembly tool and its usage method. Background Art

[0002] With the continuous progress of industrial technology and the continuous improvement of China's machinery manufacturing capacity, the difficulty of product processing has increased year by year. Some traditional processes, fixtures, and production auxiliary tools can no longer meet the needs of the upgrading of modern mechanical products. Therefore, it is necessary to design and develop more advanced tools to meet the current requirements of fast and stable processing.

[0003] In the field of machining, drills and reamers are the most commonly used cutting tools. In a CNC lathe, the main clamping method for a tool by an ER tool holder is through an ER collet, mainly because of its low cost, quick tool change, and strong versatility. In the case of low machining accuracy requirements, conventional clamping methods can meet production needs. When using an ER wrench to rotate the ER nut to fix the tool, the force application direction of the ER wrench is usually perpendicular to the ER tool holder. This method will generate a radial force during the tool clamping process, resulting in a change in the tool position, thus affecting the center position, straightness, and positional tolerance of the drill or reamer, and further causing errors in the machined product. When the machining accuracy requirement reaches below 0.03 mm, the force application of the wrench may affect the ER tool holder, resulting in the offset of the tool center. After each tool change, it is often necessary to re-calibrate the tool center, which not only reduces the machining efficiency but also increases the waiting time of the equipment.

[0004] Therefore, the technicians in this field are committed to developing an ER tool holder disassembly and assembly tool and its usage method, which can convert the unilateral radial force of the nut into a uniform circumferential radial force during the tool clamping process, thus avoiding the offset of the tool center. Summary of the Invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to solve the problem of re-calibrating the tool center when replacing a drill or a reamer.

[0006] To achieve the above object, the present invention provides a tool for disassembling and assembling an ER tool holder, which includes a housing, an auxiliary gear assembly, a gear connection assembly, and a gear rotation assembly. The auxiliary gear assembly is pivotally connected to one end of the housing, the gear connection assembly is pivotally connected to the other end of the housing, the gear rotation assembly is disposed through the side surface of the housing, and is respectively engaged with the auxiliary gear assembly and the gear connection assembly. The gear rotation assembly is configured to be able to rotate around a first axis, so as to drive the auxiliary gear assembly and the gear connection assembly to rotate synchronously around a second axis. The first axis and the second axis are orthogonally arranged, and the second axis coincides with the central axis of the housing. The gear rotation assembly is configured to be able to drive the locking nut on the ER tool holder to rotate, so as to realize the disassembly and assembly of the ER tool holder.

[0007] Further, the auxiliary gear assembly includes a first face gear, the gear connection assembly includes a second face gear, the gear rotation assembly includes a first spur gear. The first face gear and the second face gear are oppositely arranged. The first spur gear is disposed between the first face gear and the second face gear through the side surface of the housing, and is respectively engaged with the first face gear and the second face gear.

[0008] Further, the gear rotation assembly further includes a second spur gear. The second spur gear is disposed between the first face gear and the second face gear through the side surface of the housing, and is respectively engaged with the first face gear and the second face gear. The first spur gear and the second spur gear are oppositely arranged.

[0009] Further, an internal hexagon hole is provided at the operating end of the first spur gear, and an internal hexagon hole is provided at the operating end of the second spur gear.

[0010] Further, a plurality of protrusions are provided on the inner hole wall of the second face gear. The shapes of the plurality of protrusions are matched with the shape of the locking nut on the ER tool holder.

[0011] Further, a first bearing is further included. The outer ring of the first bearing is in interference fit with the inner wall of the housing, and the inner ring of the first bearing is in interference fit with the outer periphery of the auxiliary gear assembly.

[0012] Further, a second bearing is further included. The outer ring of the second bearing is in interference fit with the inner wall of the housing, and the inner ring of the second bearing is in interference fit with the outer periphery of the gear connection assembly.

[0013] Further, a first gasket is further included. The first gasket is detachably fixed to one end of the housing, and is configured to be able to limit the outer ring of the first bearing within the housing.

[0014] Further, it further includes a second gasket, which is detachably fixed to the other end of the housing, and the second gasket is configured to be able to limit the outer ring of the second bearing within the housing.

[0015] The present invention also provides a method for using the ER toolholder disassembly and assembly tool as described above, including the following steps: Step 1: Align the inner hole of the gear connection assembly with the locking nut on the ER toolholder to be clamped. Step 2: Use a fastening tool to connect to the operating end of the gear rotation assembly. Step 3: Operate the fastening tool to cause the gear rotation assembly to rotate in a predetermined direction, so as to drive the locking nut on the ER toolholder to clamp or loosen.

[0016] The beneficial effects of the present invention are as follows: It eliminates the need for recalibration after tool replacement, significantly reduces the processing time, lowers the requirements for the technical level of operators, and simultaneously significantly improves the production efficiency.

[0017] The following will further illustrate the concept, specific structure and technical effects generated by the present invention in conjunction with the drawings, so as to fully understand the purpose, features and effects of the present invention. Description of the Drawings

[0018] Figure 1 is a schematic structural view of an ER toolholder disassembly and assembly tool according to a preferred embodiment of the present invention; Figure 2 is a schematic structural view of the ER toolholder disassembly and assembly tool according to a preferred embodiment of the present invention from another angle; Figure 3 is an exploded view of an ER toolholder disassembly and assembly tool according to a preferred embodiment of the present invention; Figure 4 is a schematic structural view of an ER toolholder disassembly and assembly tool with the housing removed according to a preferred embodiment of the present invention; Figure 5 is a schematic structural view of the housing according to a preferred embodiment of the present invention.

[0019] Among them, 10 - ER toolholder disassembly and assembly tool, 11 - housing, 12 - auxiliary gear assembly, 121 - first face gear, 13 - gear connection assembly, 131 - second face gear, 14 - gear rotation assembly, 141 - first spur gear, 142 - second spur gear, 15 - first bearing, 16 - second bearing, 17 - first gasket, 171 - first screw, 18 - second gasket, 181 - second screw. Detailed Embodiments

[0020] The following describes multiple preferred embodiments of the present invention with reference to the accompanying drawings of the specification to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0021] In the drawings, components with the same structure are denoted by the same numerical reference signs, and components with similar structures or functions everywhere are denoted by similar numerical reference signs. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. To make the illustration clearer, the thickness of some parts in the drawings is appropriately exaggerated. Embodiment

[0022] As Figures 1-5 shown, this embodiment provides an ER collet chuck disassembling and assembling tool 10, which includes a housing 11, an auxiliary gear assembly 12, a gear connection assembly 13, and a gear rotation assembly 14. The auxiliary gear assembly 12 is pivotally connected to one end of the housing 11, the gear connection assembly 13 is pivotally connected to the other end of the housing 11, the gear rotation assembly 14 is disposed through the side surface of the housing 11, and is respectively engaged with the auxiliary gear assembly 12 and the gear connection assembly 13. The gear rotation assembly 14 is configured to be able to rotate around a first axis L1, so as to drive the auxiliary gear assembly 12 and the gear connection assembly 13 to rotate synchronously around a second axis L2. The first axis L1 and the second axis L2 are orthogonally arranged, and the second axis L2 coincides with the central axis L of the housing 11. The gear rotation assembly 14 is configured to be able to drive the locking nut on the ER collet chuck to rotate, so as to realize the disassembly and assembly of the ER collet chuck.

[0023] The synchronous rotation of the auxiliary gear assembly 12 and the gear connection assembly 13 around the second axis L2 means that: When the gear rotation assembly 14 rotates in the first direction (clockwise when looking from the outside to the inside along the first axis L1), the gear rotation assembly 14 is respectively engaged with the auxiliary gear assembly 12 and the gear connection assembly 13, so that the auxiliary gear assembly 12 rotates clockwise when looking from the inside to the outside along the second axis L2, and at the same time the gear connection assembly 13 rotates clockwise when looking from the inside to the outside along the second axis L2, thereby driving the locking nut on the ER collet chuck to clamp.

[0024] When the gear rotation assembly 14 rotates in the second direction (counterclockwise when looking from the outside to the inside along the first axis L1), the gear rotation assembly 14 is respectively engaged with the auxiliary gear assembly 12 and the gear connection assembly 13, so that the auxiliary gear assembly 12 rotates counterclockwise when looking from the inside to the outside along the second axis L2, and at the same time the gear connection assembly 13 rotates counterclockwise when looking from the inside to the outside along the second axis L2, thereby driving the locking nut on the ER collet chuck to loosen.

[0025] The auxiliary gear assembly 12 includes a first face gear 121, the gear connection assembly 13 includes a second face gear 131, the gear rotation assembly 14 includes a first spur gear 141. The first face gear 131 and the second face gear 132 are arranged oppositely. The first spur gear 141 passes through the side surface of the housing 11 and is arranged between the first face gear 121 and the second face gear 131, and meshes with the first face gear 121 and the second face gear 131 respectively.

[0026] The gear rotation assembly 14 further includes a second spur gear 142. The second spur gear 142 passes through the side surface of the housing 11 and is arranged between the first face gear 121 and the second face gear 131, and meshes with the first face gear 121 and the second face gear 131 respectively. The first spur gear 121 and the second spur gear 131 are arranged oppositely.

[0027] An internal hexagonal hole is provided at the operating end (the end exposed from the housing 11) of the first spur gear 121. An internal hexagonal hole is provided at the operating end (the end exposed from the housing 11) of the second spur gear 131.

[0028] A plurality of protrusions 132 are provided on the inner wall of the second face gear 131. The shapes of the plurality of protrusions 132 are matched with the shape of the locking nut on the ER tool holder.

[0029] The ER tool holder disassembly and assembly tool 10 further includes a first bearing 15. The outer ring of the first bearing 15 is in interference fit with the inner wall of the housing 11, and the inner ring of the first bearing 15 is in interference fit with the outer periphery of the auxiliary gear assembly 12.

[0030] The ER tool holder disassembly and assembly tool 10 further includes a second bearing 16. The outer ring of the second bearing 16 is in interference fit with the inner wall of the housing 11, and the inner ring of the second bearing 16 is in interference fit with the outer periphery of the gear connection assembly 13.

[0031] The ER tool holder disassembly and assembly tool 10 further includes a first gasket 17. The first gasket 17 is detachably fixed to one end of the housing 11 by a first screw 171. The first gasket 17 is configured to be able to limit the outer ring of the first bearing 15 within the housing 11.

[0032] The ER tool holder disassembly and assembly tool 10 further includes a second gasket 18. The second gasket 18 is detachably fixed to the other end of the housing 11 by a second screw 181. The second gasket 18 is configured to be able to limit the outer ring of the second bearing 16 within the housing 11. Embodiment

[0033] This embodiment provides a method for using the ER tool holder disassembly and assembly tool 10 as described in Embodiment 1, including the following steps: Step 1: Align the inner hole of the gear connection assembly 13 with the locking nut on the ER tool holder to be clamped; Step 2: Use a fastening tool to connect to the operating end of the gear rotating assembly 14; Step 3: Operate the fastening tool to rotate the gear rotating assembly 14 in a predetermined direction to drive the locking nut on the ER tool shank to clamp or loosen.

[0034] Furthermore, the predetermined direction includes a first direction (clockwise when looking from the outside to the inside along the first axis L1) and a second direction (counterclockwise when looking from the outside to the inside along the first axis L1). In this embodiment, the fastening tool is an Allen wrench.

[0035] In Step 2, the fastening tool can be used to connect to the operating end of either the first spur gear 141 or the second spur gear 142. Therefore, when the position of the first spur gear 141 or the second spur gear 142 is limited, it is convenient to disassemble and assemble the ER tool shank.

[0036] When the fastening tool is operated to rotate the gear rotating assembly 14 in the first direction, the gear rotating assembly 14 (the first spur gear 141 and / or the second spur gear 142) meshes with the auxiliary gear assembly 12 (the first face gear 121) and the gear connection assembly 13 (the second face gear 131) respectively, causing the auxiliary gear assembly 12 (the first face gear 121) to rotate clockwise when looking from the inside to the outside along the second axis L2, and at the same time the gear connection assembly 13 (the second face gear 131) to rotate clockwise when looking from the inside to the outside along the second axis L2, thereby driving the locking nut on the ER tool shank to clamp.

[0037] When the fastening tool is operated to rotate the gear rotating assembly 14 in the second direction, the gear rotating assembly 14 (the first spur gear 141 and / or the second spur gear 142) meshes with the auxiliary gear assembly 12 (the first face gear 121) and the gear connection assembly 13 (the second face gear 131) respectively, causing the auxiliary gear assembly 12 (the first face gear 121) to rotate counterclockwise when looking from the inside to the outside along the second axis L2, and at the same time the gear connection assembly 13 (the second face gear 131) to rotate counterclockwise when looking from the inside to the outside along the second axis L2, thereby driving the locking nut on the ER tool shank to loosen.

[0038] In one example, a method for using an ER tool shank disassembly and assembly tool 10 includes the steps of: First step: Assemble the housing 11 and accessories of the ER tool shank disassembly and assembly tool 10 as Figure 3 shown.

[0039] Second step: Place the ER tool shank disassembly and assembly tool 10 on the locking nut of the ER tool shank to be clamped, and pay attention to adjusting the connection direction to accurately align the inner hole of the gear connection assembly 13 with the locking nut on the ER tool shank.

[0040] Step 3: Use an Allen wrench to rotate the gear rotation assembly clockwise. The gear rotation assembly will drive the auxiliary gear assembly and the gear connection assembly to rotate synchronously. Subsequently, the lock nut rotates, and the ER tool is firmly clamped by the ER collet.

[0041] From the above method, it can be seen that the present invention enables the lock nut of the ER tool holder to be uniformly stressed circumferentially. In contrast, the traditional ER wrench only adopts a two-point stress method, which is likely to cause the tool center to deviate by more than 0.03 mm during use. For a process that requires a high-precision tool center position, the technical requirements cannot be met, and the tool center must be re-calibrated.

[0042] In summary, the present invention effectively solves the problem that the tool center deviates due to the action of the radial force when the conventional ER wrench clamps the tool. Adopting the present invention not only significantly improves the tool replacement efficiency but also plays an important role in enhancing the product processing quality of production enterprises.

[0043] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention through logical analysis, reasoning, or limited experiments based on the concept of the present invention on the basis of the prior art should fall within the protection scope determined by the claims.

Claims

1. An ER tool for disassembling and assembling tool holders, characterized in that, It includes a housing, an auxiliary gear assembly, a gear connection assembly, and a gear rotation assembly. The auxiliary gear assembly is pivotally connected to one end of the housing, the gear connection assembly is pivotally connected to the other end of the housing, the gear rotation assembly is disposed through the side surface of the housing, and is respectively engaged with the auxiliary gear assembly and the gear connection assembly. The gear rotation assembly is configured to be able to rotate around a first axis, so as to drive the auxiliary gear assembly and the gear connection assembly to rotate synchronously around a second axis. The first axis and the second axis are orthogonally arranged, and the second axis coincides with the central axis of the housing. The gear rotation assembly is configured to be able to drive the locking nut on the ER tool holder to rotate, so as to realize the disassembly and assembly of the ER tool holder.

2. The ER tool shank disassembling and assembling tool according to claim 1, characterized in that, The auxiliary gear assembly includes a first face gear, the gear connection assembly includes a second face gear, the gear rotation assembly includes a first spur gear. The first face gear and the second face gear are oppositely arranged. The first spur gear is disposed between the first face gear and the second face gear through the side surface of the housing, and is respectively engaged with the first face gear and the second face gear.

3. The ER tool holder disassembly and assembly tool according to claim 1, characterized in that, The gear rotation assembly further includes a second spur gear. The second spur gear is disposed between the first face gear and the second face gear through the side surface of the housing, and is respectively engaged with the first face gear and the second face gear. The first spur gear and the second spur gear are oppositely arranged.

4. The ER tool shank disassembly and assembly tool according to claim 2, wherein An internal hexagon hole is provided at the operating end of the first spur gear, and an internal hexagon hole is provided at the operating end of the second spur gear.

5. The ER tool for disassembling and assembling a tool holder according to claim 2, wherein, A plurality of protrusions are provided on the inner hole wall of the second face gear. The shapes of the plurality of protrusions are matched with the shape of the locking nut on the ER tool holder.

6. The ER tool holder disassembly and assembly tool according to claim 2, characterized in that, It further includes a first bearing. The outer ring of the first bearing is in interference fit with the inner wall of the housing, and the inner ring of the first bearing is in interference fit with the outer periphery of the auxiliary gear assembly.

7. The ER tool holder disassembly and assembly tool according to claim 2, wherein It further includes a second bearing. The outer ring of the second bearing is in interference fit with the inner wall of the housing, and the inner ring of the second bearing is in interference fit with the outer periphery of the gear connection assembly.

8. The ER tool shank disassembly and assembly tool according to claim 6, wherein It further includes a first gasket. The first gasket is detachably fixed to one end of the housing. The first gasket is configured to be able to limit the outer ring of the first bearing within the housing.

9. The ER tool for disassembling and assembling the tool shank according to claim 7, characterized in that, It further includes a second gasket. The second gasket is detachably fixed to the other end of the housing. The second gasket is configured to be able to limit the outer ring of the second bearing within the housing.

10. A method for using an ER tool holder disassembly and assembly tool as described in any one of claims 1-9, characterized in that, It includes the following steps: Step 1: Align the inner hole of the gear connection assembly with the locking nut on the ER tool holder to be clamped; Step 2: Use a fastening tool to connect to the operating end of the gear rotation assembly; Step 3: Operate the fastening tool to make the gear rotation assembly rotate in a predetermined direction to drive the locking nut on the ER tool holder to clamp or loosen.

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