A tip mechanism with indexable motion

Abstract

The present invention belongs to the field of mechanical equipment and relates to a center mechanism capable of indexing movement. It is installed on a center seat and includes a center shaft that is matched with the center seat. One end of the center shaft is connected with a center, and a switch bumper is arranged on the center. A phase detection switch that is matched with the switch bumper is arranged on the center seat. A servo motor is matched and arranged at the end of the center shaft far away from the center. The servo motor is provided with an output shaft, and a connecting shaft is also arranged between the output shaft and the center shaft. The output shaft of the servo motor is matched and connected with the center shaft through the connecting shaft. The center mechanism capable of indexing movement of the present invention has a simple structure and can realize the phase positioning of the fixture and the workpiece with internal splines and the automatic meshing function of the workpiece and the tool without other feeding mechanisms, and has very good practicability.

Description

Technical Field

[0001] The present invention belongs to the field of mechanical equipment and relates to a center mechanism capable of indexing movement. Background Art

[0002] The existing center mechanism of a gear shaver has no active rotation function. During machining, only the cutter drives the workpiece, fixture, and center shaft to move. This center mechanism can achieve automatic clamping and meshing of smooth-hole workpieces with the help of an automatic feeding mechanism, but it cannot complete the automatic clamping and meshing of workpieces with internal splines. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a center mechanism capable of indexing movement, which can realize the phase positioning, automatic clamping of the fixture and the workpiece with internal splines, and the automatic meshing function between the workpiece and the cutter without other feeding mechanisms.

[0004] To achieve the above object, the present invention provides the following technical solution: A center mechanism capable of indexing movement is installed on a center seat and includes a center shaft that is matched with the center seat. One end of the center shaft is connected with a center, and a switch bumper is arranged on the center. A phase detection switch that is matched with the switch bumper is arranged on the center seat;

[0005] A servo motor is matched and arranged at the end of the center shaft far from the center. The servo motor has an output shaft, and a connecting shaft is also arranged between the output shaft and the center shaft. The output shaft of the servo motor is matched and connected with the center shaft through the connecting shaft.

[0006] Optionally, an electromagnetic clutch structure is also matched and arranged on the output shaft of the servo motor.

[0007] Optionally, the electromagnetic clutch structure includes an electromagnetic clutch driving friction plate and an electromagnetic clutch driven friction plate.

[0008] Optionally, one end of the center close to the center shaft is a Morse taper section, and an installation hole that is matched with the Morse taper section is opened at the end of the center shaft close to the center.

[0009] Optionally, bearing seats are fixedly arranged on both the center shaft and the connecting shaft.

[0010] Optionally, an elastic expansion sleeve with a slot is also arranged at the end of the center far from the center shaft for clamping the workpiece with internal splines.

[0011] Optionally, the switch bumper and the phase detection switch are not in contact and sense through electromagnetic signals.

[0012] The beneficial effects of the present invention are as follows:

[0013] The present invention relates to a center mechanism capable of indexing movement, which has a simple structure and can achieve the phase positioning of a fixture and a workpiece with an internal spline, as well as the automatic engagement function between the workpiece and the tool, without the need for other feeding mechanisms, and has good practicability.

[0014] Other advantages, objectives and features of the present invention will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be learned from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following specification. Brief Description of the Drawings

[0015] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail preferably with reference to the accompanying drawings, where:

[0016] Figure 1 It is a schematic diagram of the overall structure of a center mechanism capable of indexing movement according to the present invention.

[0017] Reference numerals in the drawings: center seat 1, center shaft 2, center 3, switch bumper 4, phase detection switch 5, servo motor 6, output shaft 7, connecting shaft 8, electromagnetic clutch structure 9, electromagnetic clutch driving friction plate 91, electromagnetic clutch driven friction plate 92. Detailed Embodiments

[0018] The following specific examples illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and the features in the embodiments can be combined with each other without conflict.

[0019] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to the present invention; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0020] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings. This 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 operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be construed as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] Please refer to Figure 1 , which is a center mechanism with indexable movement, installed on the center seat 1, and includes a center shaft 2 that is matched with the center seat 1. One end of the center shaft 2 is connected with a center 3. Bearing seats are fixedly arranged on both the center shaft 2 and the connecting shaft 8. One end of the center 3 close to the center shaft 2 is a Morse taper section, and an installation hole matching the Morse taper section is opened at one end of the center shaft 2 close to the center 3. A switch bump 4 is arranged on the center 3, and a phase detection switch 5 matching the switch bump 4 is arranged on the center seat 1. The switch bump 4 and the phase detection switch 5 do not contact. Through electromagnetic signal induction, an elastic expansion sleeve with a groove is also arranged at one end of the center 3 away from the center shaft 2 for clamping a workpiece with internal splines; a servo motor 6 is matched and arranged at one end of the center shaft 2 away from the center 3. The servo motor 6 is provided with an output shaft 7. A connecting shaft 8 is also arranged between the output shaft 7 and the center shaft 2. The output shaft 7 of the servo motor 6 is matched and connected with the center shaft 2 through the connecting shaft 8. An electromagnetic clutch structure 9 is also matched and arranged on the output shaft 7 of the servo motor 6. The electromagnetic clutch structure 9 includes an electromagnetic clutch driving friction plate 91 and an electromagnetic clutch driven friction plate 92.

[0022] When the electromagnetic clutch structure 9 in the present invention is closed, that is, when the electromagnetic clutch driving friction plate 91 and the electromagnetic clutch driven friction plate 92 are closed, the servo motor 6 controls the indexing rotation movement of the center 3 through the electromagnetic clutch. When the switch bump 4 rotates to the position of the phase detection switch 5 along with the center 3, the phase detection switch 5 detects a signal, and the servo motor 6 stops working and maintains the current position, completing the rotational positioning of the center 3. At this time, the automatic meshing function of the workpiece with internal splines and the center 3 is performed. After the workpiece is installed, when the electromagnetic clutch structure 9 is disengaged, that is, when the electromagnetic clutch driving friction plate 91 and the electromagnetic clutch driven friction plate 92 are separated, the servo motor 6 does not affect the rotation of the center shaft 2, and the center 3 can rotate freely.

[0023] The structure of the present invention is simple. Without other feeding mechanisms, the phase positioning of the fixture and the workpiece with internal splines and the automatic meshing function of the workpiece and the tool can be realized, which has good practicability.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A centering mechanism with indexable movement, installed on a center rest, characterized in that: It includes a center shaft that is matched and set with a center seat. One end of the center shaft is connected with a center. A switch bumper is arranged on the center, and a phase detection switch matched with the switch bumper is arranged on the center seat. A servo motor is matched and set at the end of the center shaft away from the center. The servo motor is provided with an output shaft. A connecting shaft is also arranged between the output shaft and the center shaft. The output shaft of the servo motor is matched and connected with the center shaft through the connecting shaft. An electromagnetic clutch structure is also matched and set on the output shaft of the servo motor. The electromagnetic clutch structure includes an electromagnetic clutch driving friction plate and an electromagnetic clutch driven friction plate. The switch bumper and the phase detection switch are not in contact, and through electromagnetic signal induction, an elastic expansion sleeve with a slot is also arranged at the end of the center away from the center shaft for clamping a workpiece with an internal spline. When the electromagnetic clutch structure is closed, the servo motor controls the indexing rotation movement of the center through the electromagnetic clutch. When the switch bumper triggers the phase detection switch, the servo motor stops and maintains the current position. After positioning, the electromagnetic clutch disengages, and the center can rotate freely.

2. The indexing motion center mechanism according to claim 1, characterized in that: One end of the center close to the center shaft is a Morse taper section, and an installation hole matched with the Morse taper section is opened at one end of the center shaft close to the center.

3. The indexing motion center mechanism according to claim 1, wherein: Bearing seats are arranged on both the center shaft and the connecting shaft.

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