Tooth turning machine tool rest main shaft split type automatic tool changing mechanism

Abstract

The invention belongs to the field of machine tool machining, and relates to a tooth turning machine tool rest main shaft split type automatic tool changing mechanism which comprises a split type main shaft, a tool handle, a disc spring, a pull claw and a detection device. The split main shaft comprises a first main shaft and a second main shaft which are connected through a loose screw; the cutter handle is connected with the first main shaft through a pull claw, the pull claw tensions a blind rivet on the cutter handle through tensioning force generated by a disc spring, and the conical surface of the cutter handle is attached to the conical surface of the second main shaft; the detection device comprises a first detection switch and a second detection switch and is used for detecting whether the cutter handle is installed on the second main shaft or not. By adopting the split type main shaft design, even under the condition that the cutter is locked, the cutter handle can be easily ejected out by loosening the connecting screw, and the main shaft does not need to be integrally disassembled; by arranging the detection switch and the detection point used in cooperation with the detection switch, whether the tool is installed on the main shaft or not can be accurately judged, signal feedback is provided for the automatic tool changing process, and the accuracy and safety of the tool changing action are ensured.

Description

Technical Field

[0001] The invention belongs to the field of machine tool processing and relates to a gear turning machine tool holder spindle split type belt automatic tool changing mechanism. Background Art

[0002] In the field of gear turning machining, the tool holder spindle is one of the core components, and its performance and stability directly affect the processing quality and efficiency. The traditional gear turning machine tool holder spindle usually adopts an integral structure, the tool is positioned by the cone surface and tightened by the disc spring force. However, this structure has exposed some problems during long-term use, especially during the tool removal process, the tool handle often "locks" in the spindle, resulting in the inability to remove it normally. In this case, the maintenance personnel have to disassemble the entire spindle for maintenance, which not only increases the difficulty of maintenance, but also greatly prolongs the maintenance time and increases the maintenance cost. Summary of the invention

[0003] In view of this, the object of the present invention is to provide a gear turning machine tool holder spindle split type with automatic tool changing mechanism to solve the above problems.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a gear turning machine tool holder spindle split type with automatic tool changing mechanism, comprising a split spindle, a tool holder, a disc spring, a pulling claw and a detection device; the split spindle comprises a first spindle and a second spindle connected by loose screws; the tool holder is connected to the first spindle through the pulling claw, and the pulling claw tightens the pulling pin on the tool holder through the tensioning force generated by the disc spring to achieve the fitting of the conical surface of the tool holder and the conical surface of the second spindle; the detection device comprises a first detection switch and a second detection switch, which are used to detect whether the tool holder is installed on the second spindle.

[0005] Optionally, the split spindle adopts a built-in spindle motor direct drive, the motor cooling adopts a water cooling device, and is equipped with a spindle overload automatic detection and alarm device.

[0006] Optionally, the disc spring generates a tensioning force through a locking nut, and the tensioning force acts on the pulling claw through an intermediate pulling rod to achieve tensioning of the tool handle.

[0007] Optionally, a first detection point and a second detection point are provided on the top of the first spindle, which are used in conjunction with a first detection switch and a second detection switch respectively; when the first detection point and the first detection switch are at the same height, it is judged that there is a knife; the second detection switch and the second detection point are used to confirm the spindle state when there is no tool handle, and when the second detection switch and the second detection point are at the same height, it is judged that there is no knife.

[0008] Optionally, the detection point is fixed on a rod that can be moved up and down, and is connected to the middle pull rod through a thread to achieve relative position adjustment with the detection switch.

[0009] Optionally, the middle pull rod and the pull claw are connected by threads, and the pull claw relies on the tensioning force generated by the disc spring to tighten the pull pin on the tool handle, so that the conical surface of the tool handle fits with the conical surface of the spindle.

[0010] Optionally, when the conical surface of the tool handle and the conical surface of the spindle fit too tightly and cannot be loosened by the claws, the first spindle and the second spindle can be separated by loosening the screws. If the second spindle still fits tightly to the tool handle, the tool handle can be knocked out with a copper rod.

[0011] Optionally, the connection between the first spindle and the second spindle, as well as the connection between the pull rod, the pull claw, the disc spring and the locking nut, are designed with anti-loosening measures to ensure stability and safety during the processing.

[0012] Optionally, a spacer sleeve is provided between the locking nut and the disc spring.

[0013] The beneficial effects of the present invention are as follows: by adopting a split spindle design, even if the tool is "locked", the tool handle can be easily ejected by loosening the connecting screws, without the need to disassemble the spindle as a whole, thereby greatly simplifying the maintenance steps and saving maintenance time and cost; the split design makes the assembly and disassembly of the spindle more flexible, and is convenient for rapid adjustment and replacement of parts according to actual needs, thereby improving the overall use efficiency and adaptability of the equipment; by setting a first detection switch and a second detection switch, and detection points used in conjunction with them, it is possible to accurately determine whether a tool is installed on the spindle, providing reliable signal feedback for the automated tool changing process, and ensuring the accuracy and safety of the tool changing action; the spindle is directly driven by a built-in motor, and is equipped with a water cooling device and an automatic spindle overload detection and alarm device, which effectively improves the stability and safety of the system and reduces the probability of failure.

[0014] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0016] Figure 1 It is the installation and assembly diagram of the knife handle of the present invention;

[0017] Figure 2 It is a top schematic diagram of the split spindle of the present invention;

[0018] Figure 3It is a schematic diagram of the middle part of the split main shaft of the present invention;

[0019] Figure 4 It is a bottom schematic diagram of the split main shaft of the present invention.

[0020] Figure numerals: first spindle 1, second spindle 2, rod 3, intermediate pull rod 4, locking nut 5, spacer 6, disc spring 7, pull claw 8, tool handle 9, first detection switch 10, first detection point 11, second detection switch 12, second detection point 13. DETAILED DESCRIPTION

[0021] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0022] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0023] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] See also Figure 1 to Figure 4, is a gear turning machine tool holder spindle split type with automatic tool changing mechanism, including a split spindle, a tool handle 9, a disc spring 7, a pull claw 8 and a detection device; the split spindle includes a first spindle 1 and a second spindle 2 connected by loose screws; the tool handle 9 is connected to the first spindle 1 through the pull claw 8, and the pull claw 8 tightens the pull nail on the tool handle 9 through the tension force generated by the disc spring 7 to achieve the fit between the conical surface of the tool handle 9 and the conical surface of the second spindle 2; the detection device includes a first detection switch 10 and a second detection switch 12, which are used to detect whether the tool handle 9 is No, it is installed on the second spindle 2. The split spindle adopts a built-in spindle motor direct drive, the motor cooling adopts a water cooling device, and is provided with a spindle overload automatic detection and alarm device. The disc spring 7 generates a tensioning force through the locking nut 5, and the tensioning force acts on the claw 8 through the intermediate pull rod 4 to achieve the tightening of the tool handle 9. The top of the first spindle 1 is provided with a first detection point 11 and a second detection point 13 used in conjunction with the first detection switch 10 and the second detection switch 12 respectively; when the first detection point 11 and the first detection switch 10 are When the two ends of the tool handle 9 are at the same height, it is judged that there is a knife; the second detection switch 12 and the second detection point 13 are used to confirm the spindle state when there is no tool handle 9. When the second detection switch 12 and the second detection point 13 are at the same height, it is judged that there is no knife. The detection point is fixed on the rod 3 which can be moved up and down, and is connected to the middle pull rod 4 by threading to achieve relative position adjustment with the detection switch. The middle pull rod 4 and the pull claw 8 are connected by threading. The pull claw 8 relies on the tensioning force generated by the disc spring 7 to tighten the pull nail on the tool handle 9, so that the conical surface of the tool handle 9 and the main shaft are aligned. When the conical surfaces of the shafts fit tightly and the conical surfaces of the tool handle 9 and the spindle are too tightly fitted and cannot be loosened by the claw 8, the first spindle 1 and the second spindle 2 can be separated by loosening the screws. If the second spindle 2 is still tightly fitted to the tool handle 9, the tool handle 9 can be knocked out with a copper rod. The connection between the first spindle 1 and the second spindle 2, as well as the connection between the pull rod 3, the claw 8, the disc spring 7 and the locking nut 5 are all designed with anti-loosening measures to ensure stability and safety during the processing. A spacer 6 is also provided between the locking nut 5 and the disc spring 7.

[0025] In this embodiment, the disc spring 7 generates a tightening force by the locking nut 5; first, the compression size of the disc spring 7 is calculated by force, and then the locking nut 5 is tightened by a torque wrench. After the disc spring 7 is compressed to the calculated size, the locking nut 5 is locked. At this time, the disc spring 7 generates a tightening force; the tightening force generated by the disc spring 7 acts on the claw 8 through the intermediate pull rod 4. The intermediate pull rod 4 and the claw 8 are connected by threads. The claw 8 tightens the rivet on the tool handle 9 by relying on the tightening force generated by the disc spring 7. At this time, the conical surface of the tool handle 9 and the conical surface of the second spindle 2 are in contact. After the contact, the tool handle 9 can no longer move upward. The force of the disc spring 7 is relied on to tighten the tool handle 9 through the claw 8. The rivet acts on the tool handle 9, and at this time, the claw 8 can no longer move upward.

[0026] In this embodiment, when the first detection switch 10 detects the first detection point 11, it is determined that there is a knife. The first detection point 11 is fixed on the rod 3, and the rod 3 is connected to the middle pull rod 4 by a thread, so the detection point can move up and down. When the first detection point 11 and the first detection switch 10 are at the same height, the detection switch determines that there is a knife, and when the first detection switch 10 and the first detection point 11 are not at the same height, it is determined that there is no knife.

[0027] In this embodiment, the first detection switch 10 and the second detection switch 12 are position sensors. When there is no knife handle 9, the pull rod 3 continues to move upward for a certain distance under the action of the disc spring 7. At this time, the first detection point 11 and the first detection switch 10 are not at the same level, and the second detection switch 12 and the second detection point 13 are at the same height. At this time, the second detection switch 12 is always on, which means that there is no knife.

[0028] In this embodiment, the conical surface of the tool handle 9 and the conical surface of the spindle are an interference fit. There is a situation where the pull claw 8 is loosened while the tool handle 9 is still in contact with the spindle. At this time, the first spindle 1 and the second spindle 2 can be loosened by loosening the screws. If the second spindle 2 is still tightly fitted to the tool handle 9, the tool handle 9 can be knocked out with a copper rod.

[0029] In this embodiment, under normal circumstances, the first spindle 1 and the second spindle 2 are integrated as a whole. If the precision loss of the first bonding surface A and the second bonding surface B of the second spindle 2 requires the first spindle 1 and the second spindle 2 to be replaced as a whole, under the structure of this patent, only the second spindle 2 needs to be replaced.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A gear turning machine tool holder spindle split type with automatic tool changing mechanism, characterized in that: It includes a split spindle, a tool handle, a disc spring, a pull claw and a detection device; The split spindle includes a first spindle and a second spindle connected by loose screws; the tool handle is connected to the first spindle through a pull claw, and the pull claw tightens the pull pin on the tool handle through the tensioning force generated by the disc spring to achieve the fit between the conical surface of the tool handle and the conical surface of the second spindle; the detection device includes a first detection switch and a second detection switch, which are used to detect whether the tool handle is installed on the second spindle.

2. According to claim 1, the gear turning machine tool holder spindle split type with automatic tool changing mechanism is characterized by: The split spindle is directly driven by an internal spindle motor, the motor is cooled by a water cooling device, and is equipped with an automatic spindle overload detection and alarm device.

3. The gear turning machine tool holder spindle split type with automatic tool changing mechanism according to claim 1, characterized in that: The disc spring generates a tensioning force through the locking nut, and the tensioning force acts on the pulling claw through the intermediate pulling rod to tighten the tool handle.

4. The gear turning machine tool holder spindle split type with automatic tool changing mechanism according to claim 3, characterized in that: The top of the first spindle is provided with a first detection point and a second detection point used in conjunction with a first detection switch and a second detection switch respectively; When the first detection point and the first detection switch are at the same height, it is judged that there is a tool; the second detection switch and the second detection point are used to confirm the spindle state when there is no tool handle. When the second detection switch and the second detection point are at the same height, it is judged that there is no tool.

5. The gear turning machine tool holder spindle split type with automatic tool changing mechanism according to claim 4, characterized in that: The detection point is fixed on a rod that can be moved up and down, and is connected to the middle pull rod through threads to achieve relative position adjustment with the detection switch.

6. The gear turning machine tool holder spindle split type with automatic tool changing mechanism according to claim 3, characterized in that: The middle pull rod and the pull claw are connected by threads, and the pull claw relies on the tensioning force generated by the disc spring to tighten the pull pin on the tool handle, so that the conical surface of the tool handle fits with the conical surface of the spindle.

7. The gear turning machine tool holder spindle split type with automatic tool changing mechanism according to claim 1, characterized in that: When the cone surface of the tool handle and the cone surface of the spindle fit too tightly and cannot be loosened by the claws, the first spindle and the second spindle can be separated by loosening the screws. If the second spindle still fits tightly to the tool handle, the tool handle can be knocked out with a copper rod.

8. The gear turning machine tool holder spindle split type with automatic tool changing mechanism according to claim 1, characterized in that: The connection between the first spindle and the second spindle, as well as the connection between the pull rod, the pull claw, the disc spring and the lock nut are all designed with anti-loosening measures to ensure stability and safety during the processing.

9. The gear turning machine tool holder spindle split type with automatic tool changing mechanism according to claim 3, characterized in that: A spacer is also provided between the locking nut and the disc spring.

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