A type of slotted pin one-piece forming roller cutter

Abstract

This utility model relates to the field of machining tool technology, specifically to a one-time forming roller tool for slotted pins; it includes a tool holder and a cutting mechanism. The cutting mechanism includes a cutter disc, machining tools, a mounting base, a positioning plate, a drive motor, a T-shaped rod, a locking nut, a cooling device, and a support device. During processing, one end of the slotted pin is first fixed by a clamp on a moving mechanism on the equipment. Then, the moving mechanism on the equipment drives the slotted pin to move towards the machining tool. At this time, three drive motors drive the machining tools to rotate respectively. Then, the moving mechanism continues to move, so that the end of the slotted pin passes between the three machining tools. Then, the outer circular surface of the end of the slotted pin can be simultaneously cut by the three machining tools to form three limiting grooves, thereby improving processing efficiency and processing accuracy when machining limiting grooves that are 120° apart.

Description

Technical Field

[0001] This utility model relates to the field of machining tool technology, and in particular to a one-time forming roller tool for slotted pins. Background Technology

[0002] A slotted pin is a positioning and mating structure, mostly round pins with one or more locating grooves on its outer circumference. These grooves prevent rotation during installation. Currently, some slotted pins have three locating grooves at their ends. During installation, the locating grooves engage with the mating protrusions on the fixing component, and then the round rod can be inserted into the locating hole on the mounting component, thus fixing the slotted pin in place and preventing it from rotating after installation. However, existing machining tools traditionally perform single-pass machining. After machining one locating groove, the unmachined end of the slotted pin is loosened and rotated 120° before machining again. This machining method is not only inefficient but also requires extremely high precision in the rotation angle, resulting in very complex fixture setup. If the rotation angle is not precise, it will inevitably affect the uniform spacing between the locating grooves, and may even cause mismatch in subsequent installation of the slotted pin, leading to scrapping of the part. Utility Model Content

[0003] The purpose of this utility model is to provide a roller tool for one-time forming of slotted pins, which aims to improve processing efficiency and accuracy when processing limiting slots with a 120° interval between them.

[0004] To achieve the above objectives, this utility model provides a one-time forming roller cutter for slotted pins, including a cutter holder, which is detachably mounted on the machine body, and also includes a cutting mechanism;

[0005] The cutting mechanism includes a cutter head, a machining tool, a mounting base, a positioning plate, a drive motor, a T-shaped rod, a locking nut, a cooling device, and a support device. The cutter head is detachably mounted on the tool holder and has three tool-avoiding grooves arranged at 120° intervals in a ring. The machining tool is located on one side of the tool-avoiding grooves. The mounting base is detachably connected to the cutter head and has three slots arranged at 120° intervals. The end of the mounting shaft of the machining tool is mounted on the mounting base via a rotating bearing. The positioning plate is detachably connected to the cutter head and is located close to the mounting base. The drive motor is fixed on the positioning plate, and its output shaft is connected to the connection part of the machining tool via the T-shaped rod and the locking nut. The cooling device is located on the cutter head and has three slots arranged at 120° intervals in a ring, located close to the machining tool. The support device is located on the tool holder.

[0006] The output end of the drive motor is provided with an internal hexagonal cavity, and the connecting end of the machining tool is provided with an external hexagonal end, and is slidably inserted and installed in the internal hexagonal cavity.

[0007] The cooling device includes a liquid guide seat and an outlet pipe. The liquid guide seat is detachably connected to the cutter head, and its top inlet is connected to a coolant delivery copper pipe through a compression fitting copper pipe. The outlet pipe is welded to the outlet side of the liquid guide seat and is inclined.

[0008] The support device includes a mating seat and a fixing plate. The mating seat is coaxially arranged with the slot pins passing through the plurality of machining tools. The fixing plate is detachably connected to the mating seat and the tool holder.

[0009] The locking nut is installed on the T-shaped rod and then spot-welded to the end face of the T-shaped rod.

[0010] This utility model discloses a one-time forming roller cutter for slotted pins. During processing, one end of the slotted pin is first fixed by a clamp on a moving mechanism on the equipment. Then, the moving mechanism on the equipment moves the slotted pin towards the processing cutter. At this time, three drive motors drive the processing cutter to rotate. Then, the moving mechanism continues to move, so that the end of the slotted pin passes between the three processing cutters. Then, the outer circular surface of the end of the slotted pin can be cut by the three processing cutters simultaneously to form three limiting grooves. Compared with the traditional method of single processing followed by rotation and positioning, and then continuing processing until complete processing, the cutter structure of this application can achieve one-time forming of three limiting grooves, which greatly improves processing efficiency and processing accuracy. This can improve processing efficiency and processing accuracy when processing limiting grooves that are 120° apart on the slotted pin. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0012] Figure 1 This is a schematic diagram of the overall structure of the slotted pin one-time forming roller cutter of this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of the mating seat of this utility model.

[0014] Figure 3 This is a schematic diagram of the cutter head structure of this utility model.

[0015] Figure 4 This is a schematic diagram of the mounting base of this utility model.

[0016] In the diagram: 101-tool holder, 102-tool disc, 103-tool avoidance groove, 104-machining tool, 105-mounting base, 106-positioning plate, 107-drive motor, 108-T-shaped rod, 109-locking nut, 110-liquid guide seat, 111-outlet pipe, 112-fitting seat, 113-fixing plate. Detailed Implementation

[0017] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0018] like Figures 1 to 4 As shown, where Figure 1 This is a schematic diagram of the overall structure of the slotted pin one-piece forming roller cutter. Figure 2 This is a structural diagram of the mating seat 112. Figure 3 This is a schematic diagram of the cutter head 102. Figure 4 This is a structural schematic diagram of the mounting base 105. This utility model provides a one-time forming roller cutter for slotted pins: it includes a cutter holder 101 and a cutting mechanism. The cutting mechanism includes a cutter disc 102, a processing cutter 104, a mounting base 105, a positioning plate 106, a drive motor 107, a T-shaped rod 108, a locking nut 109, a cooling device, and a support device. The cooling device includes a liquid guide seat 110 and an outlet pipe 111. The support device includes a mating seat 112 and a fixing plate 113. The aforementioned solution can improve processing efficiency and accuracy when processing 120° spaced limiting grooves for slotted pins. It is understood that the aforementioned solution can improve processing efficiency and accuracy.

[0019] In this embodiment, the tool holder 101 is detached and installed on the equipment body. The tool holder 101 is fixed to the equipment body by positioning pins and bolts. A lead screw slide structure is provided on the feed side of the machining tool 104 on the equipment. Specifically, a servo motor with an encoder and a brake mechanism drives the ball screw to rotate, thereby moving the slide in cooperation with the linear guide slider assembly. This moves the clamping mechanism set on the slide. The clamp can be a chuck, which is mounted on an L-shaped support plate fixed on the slide. The chuck is coaxial with the intermediate cavity of the machining tool 104. The corresponding structure is consistent with the X-axis transmission structure of the existing CNC machining center, and is used to realize the workpiece movement and tool feed.

[0020] The cutter head 102 is detachably mounted on the tool holder 101 and has three tool avoidance grooves 103 arranged in a ring at 120° intervals. The machining tool 104 is located on one side of the tool avoidance grooves 103. The mounting base 105 is detachably connected to the cutter head 102 and has three mounting bases arranged at 120° intervals. The end of the mounting shaft of the machining tool 104 is mounted on the mounting base 105 through a rotating bearing. The positioning plate 106 is detachably connected to the cutter head 102 and is located near the mounting base 105. The drive motor 107 is fixed on the positioning plate 106, and its output shaft is connected to the connection part of the machining tool 104 through the T-shaped rod 108 and the locking nut 109. The cooling device is located on the cutter head 102 and has three cooling devices arranged in a ring at 120° intervals, located near the machining tool 104. The support device is located on the tool holder 101. The cutter head 102 is fixed by positioning pins and bolts. The tool avoidance groove 103 is used to avoid the rotation of the machining tool 104. The mounting base 105 is fixed by positioning pins and bolts and has a bearing mounting cavity to facilitate the installation of the mounting shaft end of the machining tool 104 through a rotating bearing. The connecting end of the machining tool 104 is connected to the output shaft end of the drive motor 107 through the T-shaped rod 108 and the locking nut 109. The drive motor 107 is a waterproof motor and is fixed to the positioning plate 106 by bolts. The positioning plate 106 is fixed by positioning pins and bolts. The cutter head 102 has a through hole on the rear side facing the tail of the drive motor 107 to facilitate the passage of the working cable of the drive motor 107 and avoid cable breakage during machining when the slotted pin passes through. The cooling device is used to cool the machining tool 104 during machining, and the support device is used for auxiliary support of the slotted pin.

[0021] Secondly, the output end of the drive motor 107 is provided with an internal hexagonal cavity, and the connecting end of the machining tool 104 is provided with an external hexagonal end, which is slidably inserted and installed in the internal hexagonal cavity. This structure is used for connection and mating. When the drive motor 107 and the machining tool 104 are connected and fixed, the output shaft of the drive motor 107 passes through the through hole on the positioning plate 106, and then is inserted into the machining tool 104. During insertion, the corresponding through holes are aligned, and then the T-shaped rod 108 is inserted. Finally, the locking nut 109 is installed to achieve connection. After connection, the fixing bolts of the drive motor 107 are fixed. The diameter of the through hole on the external hexagonal end of the machining tool 104 through which the optical axis of the T-shaped rod 108 passes and the diameter of the through hole on the drive motor 107 are both consistent with the diameter of the optical axis of the T-shaped rod 108, which facilitates the sliding installation of the T-shaped rod 108 and reduces the shaking gap.

[0022] Then, the liquid guide seat 110 is detached from the cutter head 102, and its top inlet is connected to the coolant delivery copper pipe through a compression fitting copper tube; the outlet pipe 111 is welded to the outlet side of the liquid guide seat 110 and is inclined. The liquid guide seat 110 is fixed by bolts, and the outlet pipe 111 is inclinedly welded to the outlet side. The liquid guide seat 110 delivers coolant through a pressure-resistant copper tube. At the same time, the copper tube can be directly shaped and maintain its shape, which can better facilitate the passage of the slot pin between the machining tools 104 during machining, protect the cooling pipe, and the coolant can also remove chips from the surface of the slot pin during cooling.

[0023] Furthermore, the mating seat 112 is coaxially arranged with the slot pins passing through the plurality of machining tools 104; the fixing plate 113 is detachably connected to the mating seat 112 and the tool holder 101 respectively. The two ends of the fixing plate 113 are connected to the mating seat 112 by positioning pins and bolts respectively. When the end length of the slot pin is long during machining, the end that is machined first can slide through the mating seat 112 for support. After machining, the machining tools 104 are stopped, and the workpiece needs to be retracted by a moving mechanism. At this time, the previously machined slots can be cleared.

[0024] Finally, after the locking nut 109 is installed on the T-shaped rod 108, it will be spot-welded to the end face of the T-shaped rod 108 for fixation. This structure helps improve connection stability and prevents the locking nut 109 from falling off during rotation. At the same time, the T-shaped rod 108 and the locking nut 109 can also prevent slippage when the drive motor 107 drives the machining tool 104 to rotate. During subsequent maintenance, the spot weld can be ground off with an electric or pneumatic grinding head before disassembly.

[0025] When using this utility model to process 120° spaced limiting grooves between slotted pins, which can improve processing efficiency and accuracy, during processing, one end of the slotted pin is first fixed by a clamp on a moving mechanism on the equipment. Then, the moving mechanism on the equipment moves the slotted pin toward the processing tool 104. At this time, the three drive motors 107 are controlled to drive the processing tool 104 to rotate, and the rotation speed is set to be the same. The drive motors 107 are synchronized by servo motor control. For example, the drive motors 107 in this application can directly adopt the existing technology CN213274761. The servo motor disclosed in U is modified in this application only by changing its output shaft structure. The prior art is equipped with a control system to control the synchronous movement of multiple motors. Therefore, the technical solution and principle of the synchronous control of the drive motor 107 directly adopts the prior art, which are all conventional means or common knowledge, and will not be described in detail here. Then the moving mechanism continues to move, so that the end of the slotted pin passes between the three processing tools 104. Then, the outer circle surface of the end of the slotted pin can be cut by the three processing tools 104 at the same time to form three limiting grooves. Compared with the traditional method of single processing followed by rotation positioning and continued processing until complete processing, the tool structure of this application can realize the one-time forming of three limiting grooves, which greatly improves the processing efficiency and the processing accuracy. In this way, the processing efficiency and processing accuracy can be improved when processing limiting grooves with a spacing of 120° between each other.

[0026] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that implementing all or part of the above embodiments and making equivalent changes in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A one-time forming roller cutter for slotted pins, comprising a tool holder, wherein the tool holder is detachably mounted on the machine body, characterized in that: It also includes a cutting mechanism; The cutting mechanism includes a cutter head, a machining tool, a mounting base, a positioning plate, a drive motor, a T-shaped rod, a locking nut, a cooling device, and a support device. The cutter head is detachably mounted on the tool holder and has three tool-avoiding grooves arranged at 120° intervals in a ring. The machining tool is located on one side of the tool-avoiding grooves. The mounting base is detachably connected to the cutter head and has three slots arranged at 120° intervals. The end of the mounting shaft of the machining tool is mounted on the mounting base via a rotating bearing. The positioning plate is detachably connected to the cutter head and is located close to the mounting base. The drive motor is fixed on the positioning plate, and its output shaft is connected to the connection part of the machining tool via the T-shaped rod and the locking nut. The cooling device is located on the cutter head and has three slots arranged at 120° intervals in a ring, located close to the machining tool. The support device is located on the tool holder.

2. The slotted pin one-time forming roller cutter as described in claim 1, characterized in that: The output end of the drive motor is provided with an internal hexagonal cavity, and the connecting end of the machining tool is provided with an external hexagonal end, and is slidably inserted and installed in the internal hexagonal cavity.

3. The slotted pin one-time forming roller cutter as described in claim 1, characterized in that: The cooling device includes a liquid guide seat and an outlet pipe. The liquid guide seat is detachably connected to the cutter head, and its top inlet is connected to a coolant delivery copper pipe through a compression fitting copper pipe. The outlet pipe is welded to the outlet side of the liquid guide seat and is inclined.

4. The slotted pin one-time forming roller cutter as described in claim 1, characterized in that: The support device includes a mating seat and a fixing plate. The mating seat is coaxially arranged with the slotted pins that pass through the plurality of machining tools. The fixing plate is detachably connected to the mating seat and the tool holder, respectively.

5. The slotted pin one-time forming roller cutter as described in claim 1, characterized in that... : After the locking nut is installed on the T-shaped rod, it will be spot welded to the end face of the T-shaped rod.

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