TWM616411U - Main shaft structure - Google Patents

Abstract

This creation provides a spindle structure, which includes a base, a spindle body, a sliding member, a resetting means, a limit member and an air nozzle. The spindle body is rotatably accommodated in the base and forms a chamber One end of the chamber is a blind end and an air passage is opened to communicate with the outside. The sliding member is slidably arranged in the chamber, and the two ends are respectively a piston and a detent part, between the piston and the blind end of the chamber A gas chamber is defined. The sliding member has a tendency to move toward the blind end of the chamber due to the elastic force of the resetting means. The limiting member is connected with the detent part to selectively interfere with the axial direction of the tool handle. The member is deformed radially due to the sliding of the sliding member, thereby positioning the knife handle or releasing the knife handle. The air nozzle is arranged on the base to inflate the air passage to drive the sliding member to slide outward, thereby releasing the knife handle.

Description

Spindle structure

This creation is related to a spindle structure, especially a spindle structure with a pneumatic tool release mechanism.

Generally speaking, the main shaft of the machine tool is used to connect the tool handle, the tool handle is connected to the processing tool, and the processing tool is driven to rotate by driving the spindle to rotate for processing operations, such as grinding operations.

The more common machine tool spindle is formed with a hollow channel. The open end is for inserting the tool holder, and the other end is inserted with a slidable jaw structure. The front end of the jaw structure has a movable or deformable jaw for limiting the tool holder. , The clamping jaw structure slides back and forth to tighten or loosen the clamping jaws to achieve the purpose of releasing the knife handle or positioning the knife handle.

Among them, in order to make the gripper structure slide back and forth, the rear end is usually connected to the drive mechanism, as disclosed in the patent TW I316442, so that the spindle structure needs a longer axial length to accommodate the drive mechanism, so the volume of the spindle structure is difficult to reduce ; In addition, each spindle must be connected with such a driving mechanism, which is even more bulky for machine tools with multiple spindles.

Therefore, how to reduce the volume occupied by the drive mechanism of the clamping jaw mechanism in the main shaft of the machine tool, and try to set more positions for the tool holder in the machine tool, is very important for improving work efficiency and saving workshop space.

One of the objectives of this creation is to provide a spindle structure, which can greatly save space by driving the tool loose by side ventilation, which is beneficial to the setup of multiple spindles.

In order to achieve the above objective, this creation provides a spindle structure, which includes a base, at least one spindle body, at least one sliding member, at least one resetting means, at least one limiting member, and an air nozzle.

The base defines an axial direction; the at least one spindle body is rotatably accommodated in the base, and at least one chamber is formed in the at least one spindle body, and one end of the chamber is a blind end At least one air passage is opened, the at least one air passage forms an air inlet on the outer surface of the at least one main shaft body, and the other end of the at least one chamber is an open end for inserting a knife handle into the at least one chamber; the At least one sliding member is slidably disposed in the at least one chamber along the axial direction, and opposite ends of the at least one sliding member are respectively provided with a piston and a detent part, the piston is closer to the blind end of the chamber and An air chamber is formed between the blind end and the air chamber, and the air chamber communicates with the at least one air passage; the at least one resetting means is arranged in the at least one chamber to provide elastic force to the at least one sliding member, so that the at least one sliding member has The tendency to move toward the blind end of the at least one containing chamber; the at least one limiting member is arranged in the at least one containing chamber and connected to the detent part of the at least one sliding member, and the at least one limiting member is provided with the handle Connected to and selectively interfere with the tool holder axially to prevent the tool holder from escaping along the axial direction, the at least one limiting member is driven by the sliding of the at least one sliding member along the axial direction to be in a positioning position It deforms radially from a release position to selectively position the knife handle or release the knife handle; the air nozzle is arranged on the base and can be selectively communicated with the air inlet, and the air nozzle is connected to a gas source, By inflating the air chamber through the air passage, the at least one sliding member slides outward along the axial direction, thereby deforming the at least one limiting member from the positioning position to the release position.

As a result, the main shaft structure provided by this creation can ventilate the side of the main shaft to achieve the tool release action, saving the installation space of the conventional drive device, so the two tool holder accommodations facing away can be provided on the same main shaft body to improve the processing efficiency.

10: Pedestal

20: Spindle body

21: Airway

211: The first radial segment

212: Axial section

213: second radial segment

22: Air chamber

30: Sliding parts

31: Piston

311: Piston

32: stop

40: spring

50: limit piece

51: connecting part

52: Expansion

53: elastic ring

60: Gas Mouth

70: top piece

71: Spring Chamber

72: Hook

80: Knife

100: drive device

200: The first pulley

300: second pulley

301: Vent

Figure 1 is a three-dimensional view of this creation.

Figure 2 is a three-dimensional exploded view of this creation.

Figure 3 is a partial cross-sectional view of this creation.

Figure 4 is a cross-sectional view of this creation from another angle.

Figure 5 is a schematic diagram of the work of this creation.

1 to 5, this creation provides a spindle structure, including a base 10, at least one spindle body 20, at least one sliding member 30, at least one resetting means, at least one limiting member 50 and an air nozzle 60, Preferably, it may further include a driving device 100, a first pulley 200, a second pulley 300, and a driving belt (not shown in the figure).

The base 10 defines an axial direction. In this embodiment, the axial direction is parallel to the horizontal direction. The base 10 forms an accommodation space; the at least one main shaft body 20 is rotatably accommodated around the axial direction. In the accommodating space of the base 10, at least one accommodating chamber is formed in the at least one spindle body 20, one end of the accommodating chamber is a blind end and at least one air passage 21 is opened, and the at least one air passage 21 is connected to the at least one An air inlet is formed on the outer surface of the main shaft body 20, and the other end of the at least one chamber is an open end for inserting a knife handle 80 into the at least one chamber, wherein the other end of the knife handle 80 can be used for connecting processing tools, For example, abrasive tablets and so on.

The at least one sliding member 30 is slidably disposed in the at least one accommodating chamber along the axial direction. The at least one sliding member 30 has a piston 311 and a detent part at opposite ends, respectively. The piston 311 is closer to the housing. An air chamber 22 is formed between the blind end of the chamber and the blind end. The air chamber 22 communicates with the at least one air passage 21; the at least one resetting means is arranged in the at least one chamber to provide elastic force to the at least one sliding member 30 , So that at least A sliding member 30 has a tendency to move toward the blind end of the at least one accommodation chamber; the at least one limiting member 50 is arranged in the at least one accommodation chamber and connected with the detent part of the at least one sliding member 30, the at least A limit member 50 is connected to the handle 80 and selectively interferes with the handle 80 in the axial direction to prevent the handle 80 from coming out along the axial direction. The at least one limit member 50 is affected by the at least one sliding member 30. The driving of the sliding along the axial direction can deform radially between a positioning position and a releasing position, thereby selectively positioning the knife handle 80 or releasing the knife handle 80.

The air nozzle is arranged on the base and can be selectively communicated with the air inlet for connection with a gas source, thereby inflating the air chamber through the air passage, so that the at least one sliding member slides outward along the axial direction , Thereby deforming the limiting member from the positioning position to the releasing position.

In this embodiment, the at least one spindle body 20 includes a spindle body 20. The opposite ends of the spindle body 20 along the axial direction respectively form a chamber, and the blind ends of the two chambers are opposite to each other. The two chambers are open to the outside in opposite directions. The two chambers each have an air passage 21, and the two air passages 21 are respectively connected to the two chambers. Preferably, the air inlet of the two air passages 21 surrounds the main shaft body 20. Circumferentially arranged, each of the air passages 21 includes a first radial section 211, an axial section 212, and a second radial section 213. The axial section 212 is connected to the first radial section 211 and the second radial section 211. Between the radial segments 213, the first radial segment 211 is connected to the air inlet, and the second radial segment 213 is connected to the air chamber 22. Therefore, under the condition that the position of the air nozzle 60 remains unchanged, the The rotation of the main shaft body 20 can selectively align one of the air inlets with the air nozzle 60. However, the first radial section 211, the axial section 212 and the second radial section 213 are designed for machining Convenient, and does not limit the actual structure and appearance of the air passage 21; in addition, in accordance with the arrangement of the two chambers, the at least one sliding member 30 includes two sliding members 30, and the at least one resetting means includes two resetting means. Means, the at least one limiting member 50 includes two limiting members 50, and the two chambers respectively accommodate one of the sliding member 30, one of the resetting means and one of the limiting member 50; In other words, each of the sliding members 30 includes a piston member 31 and a stop member 32, the piston member 31 and the stop member 32 are connected to each other, the The piston 311 is located at an end of the piston member 31 farther away from the stopper 32. The stopper 32 has the detent portion. One end of the member 31 is tapered, and another abutting member 70 is sleeved outside the piston member 31. The outer surface of the abutting member 70 is fixed to the inner wall of the chamber, and opposite ends of the abutting member 70 are respectively formed with a A spring chamber 71 and a hook 72. The resetting means is a spring 40 housed in the spring chamber 71 and elastically arranged between the bottom of the spring chamber 71 and the piston 311. The at least one limiting member 50 is Hollow, opposite ends are respectively a connecting portion 51 and an expansion portion 52, the connection portion 51 is hooked and fixed by the hook portion 72 of the abutting member 70, the expansion portion 52 is provided with a plurality of gaps arranged at intervals, so that The end of the expansion portion 52 farther away from the connecting portion 51 can swing radially due to the axial sliding of the piston member 31, thereby selectively positioning or releasing the knife handle 80; preferably, the expansion portion 52 of the limiting member 50 An elastic ring 53 is sheathed at the end, so that the expansion portion 52 has a tendency to constrict to the stopper 32.

The driving device 100 is disposed on the base 10. For example, the driving device 100 may include two driving motors and a coupling. The two driving motors are respectively disposed on opposite sides of the coupling and connected to the coupling. The first pulley 200 and the second pulley 300 are connected to the coupling and the main shaft body 20 respectively. The driving belt is sleeved outside the first pulley 200 and the second pulley 300, so that the The driving device 100 can drive the main shaft body 20 to rotate around the axial direction by the driving belt. The second pulley 300 is radially provided with two air holes 301, and the two air holes 301 are respectively connected with the two air inlets to supply the air. The nozzle 60 is selectively inserted; preferably, the air nozzle 60 is movable, and can be selectively moved and inserted into one of the vent holes 301 or pulled out from the vent hole 301.

In the actual processing operation, the air nozzle 60 should retreat from the air vent 301 so that the second pulley 300 and the main shaft body 20 can be rotated for grinding processing and other operations, and when the tool handle 80 needs to be taken out, use The second pulley 300 rotates to a proper position to align the vent hole 301 with the air nozzle 60 position, and then insert the air nozzle 60 into the vent hole 301, and ventilate the vent hole 301 and the air passage 21, so as to ventilate the air The stopper 31 is pushed out. In this way, the limiting member 50 obtains an inwardly constricted space, so that the knife handle 80 is free from the restriction of the limiting member 50; on the contrary, when the knife handle 80 is to be positioned to prevent it from coming out, use When the gas in the air chamber 22 leaves, the piston member 31 is retracted inward under the influence of the elastic force of the spring 40, and the stop member 50 is further expanded by the larger diameter part of the stop member 32 to form the counter-tool 80. Stop and locate.

In this embodiment, the two vent holes 301 are arranged circumferentially. Therefore, if the other knife handle needs to be taken out, the second pulley 300 and the main shaft body 20 must be rotated so that the other vent hole 301 is aligned with the air nozzle 60 before proceeding. Ventilation can only achieve the goal; however, in other possible embodiments, two air nozzles can also be provided, and the two air vents can be arranged in the axial direction, so that the knife can be loosened at the same time. However, the circumferential arrangement of this embodiment can It further saves the space in the axial direction of the main shaft and makes a considerable contribution to the miniaturization of the main shaft.

In addition, the air vent 301 is directly arranged on the second pulley 300, so the air nozzle 60 and its accessory devices can be exactly arranged in the space enclosed by the driving belt, without occupying additional space, and reducing the volume of the main shaft. favorable.

As a result, the spindle structure of this creation can save the space occupied by the tool loosening drive mechanism, so that the spindle can be connected to the tool holder at the opposite ends, improving work efficiency, and the tool loosening drive mechanism does not occupy additional space, enabling the spindle structure to be integrated The overall volume is minimized, which is really what the relevant industry expects. However, the above embodiments are only to illustrate and illustrate the technical content of this creation. The patent scope of this patent shall prevail in the scope of the patent application described later.

10: Pedestal

80: Knife

100: drive device

Claims (8)

A spindle structure, including: A base defines an axis; At least one main shaft body is housed in the base rotatably around the axis, at least one chamber is formed in the at least one main shaft body, one end of the chamber is a blind end and at least one air passage is opened, the at least An air passage forms an air inlet on the outer surface of the at least one main shaft body, and the other end of the at least one chamber is an open end for inserting a knife handle into the at least one chamber; At least one sliding member is slidably arranged in the at least one chamber along the axial direction, and opposite ends of the at least one sliding member are respectively provided with a piston and a detent part, and the piston is closer to the blind end of the chamber An air chamber is formed between the blind end and the air chamber communicates with the at least one airway; At least one resetting means is arranged in the at least one chamber to provide elastic force to the at least one sliding member, so that the at least one sliding member has a tendency to move toward the blind end of the at least one chamber; At least one limiting member is arranged in the at least one accommodation chamber and connected to the detent part of the at least one sliding member. The at least one limiting member is connected to the handle and selectively interferes with the handle axially, so as to To prevent the tool handle from coming out along the axial direction, the at least one limiting member is driven by the sliding of the at least one sliding member along the axial direction to be radially deformed between a positioning position and a release position, thereby selectively Position the knife handle or release the knife handle; An air nozzle is arranged on the base and can selectively communicate with the air inlet, and the air nozzle is connected to a gas source to inflate the air chamber through the air passage, so that the at least one sliding member is outwardly along the axial direction Sliding, thereby deforming the at least one limiting member from the positioning position to the releasing position. The spindle structure according to claim 1, wherein the system of the at least one spindle includes a spindle body, the opposite ends of the spindle body along the axial direction respectively form a chamber, and the blind ends of the two chambers are opposite to each other , The two chambers are open to the outside in opposite directions, the two chambers respectively have an air passage, the two air passages are respectively communicated with the two chambers, the at least one sliding part includes two sliding parts, the at least one The resetting means includes two resetting means, the at least one limiting member includes two limiting members, and the two chambers respectively accommodate one of the sliding member, one of the resetting means, and one of the limiting member . The main shaft structure according to claim 2, wherein the air inlets of the two air passages are arranged at intervals around the circumference of the main shaft body, and each of the air passages includes a first radial section, an axial section and a second radial section, The axial section is connected between the first radial section and the second radial section, the first radial section is connected with the air inlet, and the second radial section is connected with the air chamber. The main shaft structure according to claim 1, further comprising a driving device, a first pulley, a second pulley, and a driving belt. The driving device is provided on the base, and the first pulley and the second pulley are respectively sleeved Is arranged outside the driving device and the at least one main shaft body, the driving belt is sleeved outside the first pulley and the second pulley, so that the driving device can drive the at least one main shaft body around the axial direction by the driving belt When rotating, the second belt pulley is radially provided with at least one vent hole, and the at least one vent hole communicates with the air inlet for the air nozzle to be selectively inserted. The main shaft structure according to claim 2, further comprising a driving device, a first pulley, a second pulley, and a driving belt. The driving device is provided on the base, and the first pulley and the second pulley are respectively sleeved Is arranged outside the driving device and the main shaft body, the driving belt is sleeved outside the first pulley and the second pulley, so that the driving device can drive the main shaft body to rotate around the axial direction by the driving belt, the first The two pulleys are radially pierced with two vent holes, and the two vent holes are respectively communicated with the air inlets of the two air passages for the air nozzle to be selectively inserted. The spindle structure according to any one of claims 1 to 5, wherein the at least one sliding member includes a piston member and a stop member, the piston member and the stop member are connected to each other, and the piston is located on the piston One end of the stopper is farther away from the stopper, the stopper has the detent part, the outer diameter of the stopper gradually shrinks from an end farther from the piston to an end closer to the piston, and there is another abutting element It is sleeved outside the piston, the outer surface of the abutment member is fixedly connected to the inner wall of the chamber, the opposite ends of the abutment member respectively form a spring chamber and a hook part, and the resetting means is a accommodating The spring in the spring chamber is elastically arranged between the bottom of the spring chamber and the piston, the at least one limiting member is hollow, and opposite ends are respectively a connecting portion and an expanding portion, and the connecting portion is supported by the abutting member The hook part is hooked and fixed, and the expansion part is provided with a plurality of spaced apart slits, so that the end of the expansion part farther from the connecting part can swing radially due to the axial sliding of the piston, thereby selectively positioning or releasing The knife handle. The main shaft structure according to claim 6, wherein the end of the expansion portion of the limiting member is sheathed with an elastic ring, so that the expansion portion has a tendency to converge toward the stopping member. The main shaft structure according to any one of claims 4 to 5, wherein the driving device includes two driving motors and a coupling, and the two driving motors are respectively arranged on opposite sides of the coupling and respectively connected to the coupling The shaft is connected, and the first pulley is connected with the coupling.

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