Positioning automatic tool changing electric spindle

Abstract

This utility model discloses a positioning automatic tool changer electric spindle, including a housing and a spindle core disposed within the housing. A rotor, sleeved on the spindle core, is disposed inside the housing, and a stator, sleeved on the rotor, is disposed inside the housing. A drive cylinder is disposed at the rear end of the housing, and a rear end cover is disposed on the end face of the drive cylinder. A front end cover is disposed at the front end of the housing. A tool release / pull mechanism is disposed at the center of the spindle core. A nut is disposed between the housing and the spindle core. A positioning element is disposed on the nut. A fixing plate is disposed on the positioning element. A balancing element is disposed on the fixing plate. The balancing element and the nut are fixedly connected by a fixing element. This utility model optimizes the structure, allowing installation without being limited by the rotation angle, enabling the positioning element to engage with the spindle core in any direction, reducing installation difficulty and thus reducing manufacturing costs, while also facilitating the fulfillment of mechanical assembly requirements.

Description

Technical Field

[0001] This utility model relates to the field of electric spindle technology, and in particular to a positioning automatic tool changing electric spindle. Background Technology

[0002] Automatic tool changer electric spindles are high-tech mechatronic products mainly used in CNC machining centers. Existing electric spindles have an integrated split positioning key on the rotor shaft core, which is locked to the rotor shaft core by a front locking nut. It is difficult to achieve the required precision during assembly or later maintenance. At this time, one-to-one on-site grinding and matching is required, which is time-consuming and labor-intensive, and greatly increases the investment in production and manufacturing costs. Therefore, it is necessary to make improvements. Utility Model Content

[0003] (a) Technical problems that need to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a positioning automatic tool change electric spindle with optimized structure. During installation, it is not limited by the rotation angle and can be coupled with the positioning component and the spindle core in any direction, reducing the difficulty of installation and thus reducing production and manufacturing costs. At the same time, it is beneficial to meet the needs of mechanical assembly.

[0005] (ii) Technical solutions to be adopted

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] An automatic tool changer spindle includes a housing and a spindle core disposed within the housing. A rotor is mounted on the spindle core inside the housing, and a stator is mounted on the rotor inside the housing. A drive cylinder is located at the rear end of the housing, and a rear end cover is provided on the end face of the drive cylinder. A front end cover is provided at the front end of the housing. A tool release / pull mechanism is located at the center of the spindle core. A nut is disposed between the housing and the spindle core. A positioning element is disposed on the nut, and a balancing element is disposed on the positioning element. The balancing element and the nut are fixedly connected by a fixing element.

[0008] Preferably, the positioning element includes a flange disposed on the nut, a ring body disposed on the flange, and at least two positioning keys disposed on the ring body. The flange, the ring body, and the positioning keys are all integrally formed. The shaft passes through the flange and the ring body. The flange is provided with grooves spaced apart. The nut is provided with mounting grooves corresponding to the grooves. The fixing element passes through the balancing element and the grooves in sequence to the mounting groove.

[0009] Preferably, two positioning keys are used, and four grooves are used. At least four mounting slots are provided on the nut, and each groove corresponds to one mounting slot and is connected together by the fastener.

[0010] Preferably, the balancing component includes a fixing plate sleeved on the positioning component, the fixing plate having mounting holes for mounting the fixing component, and balancing grooves evenly distributed at intervals on the fixing plate, with a balancing screw installed in each balancing groove.

[0011] Preferably, the fastener is a screw.

[0012] Preferably, two bearings are provided at the front end of the shaft inside the housing, and a spacer is arranged between the two bearings.

[0013] Preferably, at least two positioning grooves are provided on the front end face of the shaft.

[0014] Preferably, the front cover is fixedly connected to the front end of the housing by locking screws.

[0015] (III) The technical effects to be achieved

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] Firstly, this utility model has a nut between the housing and the shaft core, a positioning component on the nut, a balancing component on the positioning component, and a fixed connection between the balancing component and the nut by a fixing component. This optimizes the structure, and during installation, it is not limited by the rotation angle. The positioning component can be combined with the shaft core in any direction, reducing the difficulty of installation and thus reducing the production cost. At the same time, it is conducive to meeting the needs of mechanical assembly.

[0018] Secondly, the positioning component of this utility model includes a flange set on the nut, a ring body set on the flange, and at least two positioning keys set on the ring body. The flange, ring body and positioning keys are all integrally formed. The shaft passes through the flange and the ring body. The flange is provided with grooves distributed at intervals. The nut corresponding to the grooves is provided with a mounting groove. The fixing component passes through the balancing component and the grooves in sequence to the mounting groove. The positioning component with this configuration not only has a more robust structure that can meet the usage requirements, but also facilitates the connection with the nut and the fixing plate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0020] Figure 2 This is an exploded view of the present invention.

[0021] Figure 3This is a schematic diagram of the main view of this utility model.

[0022] Figure 4 This is a schematic diagram of the left-view direction of this utility model.

[0023] Figure 5 This is a schematic diagram of the front part of the casing of this utility model.

[0024] Figure 6 for Figure 5 Sectional view along the AA direction.

[0025] Figure 7 This is a schematic diagram showing the connection of the nut, positioning component, and balancing component of this utility model together via a fixing component.

[0026] Figure 8 This is a schematic diagram showing the assembly of the nut, positioning component, and balancing component of this utility model.

[0027] Figure 9 This is a schematic diagram of the shaft core structure in the housing of this utility model.

[0028] In the diagram: 1, housing; 2, shaft core; 3, drive cylinder; 4, rear end cover; 5, nut; 6, positioning component; 7, balancing component; 8, fixing component; 11, front end cover; 12, bearing; 13, spacer ring; 21, positioning groove; 51, mounting groove; 61, flange; 62, ring body; 63, positioning key; 71, fixing plate; 72, mounting hole; 73, balancing screw; 611, groove; 711, balancing groove. Detailed Implementation

[0029] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0030] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0033] Example 1: See Figures 1 to 9An automatic tool changer spindle includes a housing 1 and a spindle core 2 disposed within the housing 1. A rotor is mounted on the spindle core 2 inside the housing 1, and a stator is mounted on the rotor inside the housing 1. A drive cylinder 3 is located at the rear end of the housing 1, and a rear end cover 4 is located on the end face of the drive cylinder 3. In this embodiment, the rear end cover 4 has a tool unloading air inlet (not shown in the figure). A front end cover 11 is located at the front end of the housing 1. A tool release / pull mechanism is located at the center of the spindle core 2. The tool release / pull mechanism includes a pull rod and a claw fixed to the output end of the pull rod for clamping the tool assembly. The tool release / pull mechanism is... This is a common technique in the field, and therefore will not be described in detail. A nut 5 is provided between the housing 1 and the shaft core 2. A positioning element 6 is provided on the nut 5, and a balancing element 7 is provided on the positioning element 6. The balancing element 7 and the nut 5 are fixedly connected by a fixing element 8. This type of nut 5 is not limited by the rotation angle during installation and can be combined with the positioning element 6 and the shaft core 2 in any direction, reducing the difficulty of installation and thus reducing the production cost. It also helps to meet the needs of mechanical assembly. The housing 1 of this utility model contains a cooling channel, which is a common technique in the field and will not be described in detail here. This utility model, a positioning automatic tool changer electric spindle, can realize high-speed machining and is applied in CNC machining, drilling and tapping, or mold engraving and milling, etc.

[0034] This utility model has a nut 5 between the housing 1 and the shaft core 2. A positioning component 6 is provided on the nut 5, and a balancing component 7 is provided on the positioning component 6. The balancing component 7 and the nut 5 are fixedly connected by a fixing component 8, facilitating disassembly and installation, and aiding in later maintenance and repair, thus reducing maintenance costs. Furthermore, the optimized structure simplifies installation and disassembly, eliminating the need for traditional thread-locking adhesive reinforcement, further reducing maintenance costs.

[0035] Example 2: This can be explained based on Example 1, such as... Figure 2 , Figure 6 , Figure 7 and Figure 8As shown, the positioning component 6 includes a flange 61 mounted on the nut 5, a ring 62 mounted on the flange 61, and at least two positioning keys 63 mounted on the ring 62. The flange 61, ring 62, and positioning keys 63 are all integrally formed, which greatly improves the strength of the positioning keys 61. The shaft core 2 passes through the flange 61 and the ring 62. The flange 61 is provided with grooves 611 spaced apart. The nut 5 corresponding to the grooves 611 is provided with mounting grooves 51. The fixing component 8 passes through the balancing component 8 and the grooves 611 to the mounting grooves 51 in sequence. This facilitates the fixed connection between the balancing component 8 and the nut 5, and at the same time restricts the rotation of the positioning component 6. In this embodiment, two positioning keys 63 are used, and four grooves 611 are used. At least four mounting slots 51 (twenty mounting slots 51) are provided on the nut 5. Each groove 611 corresponds to one mounting slot 51 and is connected together by the fixing member 8. During installation, there is no limitation on the rotation angle; the positioning member 6 can be engaged with the shaft core 2 in any direction, reducing the difficulty of installation and thus reducing manufacturing costs. This also helps meet mechanical assembly requirements. After installation, it prevents the positioning member 6 from rotating on the nut 5 and also helps to fix the nut 5, positioning member 6, and balancing member 8 together. In use, at least two positioning keys 63 are used to clamp the tool holder on the shaft core 2.

[0036] Example 3: This can be described based on Example 1 or Example 2, such as... Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the balancing component 7 includes a fixing plate 71 fitted onto the positioning component 6. The fixing plate 71 has mounting holes 72 for installing the fixing component 8, and balancing grooves 711 are evenly distributed on the fixing plate 71 (the balancing grooves 711 are equally spaced on the fixing plate 71). A balancing screw 73 is installed in each balancing groove 711. This arrangement is reasonable, simple in structure, and easy to implement. It should be noted that the fixing component 8 uses screws, which facilitates disassembly and installation.

[0037] Example 4: This can be described based on Example 1, Example 2, or Example 3, such as... Figure 6 As shown, two bearings 12 are provided at the front end of the shaft core 2 inside the housing 1, and a spacer 13 is arranged between the two bearings 12, which is more conducive to the rotation of the shaft core 2.

[0038] Example 5: This can be described based on Example 1, Example 2, Example 3, or Example 4, such as... Figure 2 and Figure 9 As shown, at least two positioning grooves 21 are provided on the front end face of the shaft core 2. In this embodiment, there are two positioning grooves 21, which is more conducive to the secure locking of the tool holder.

[0039] Example 6: This can be described based on Example 1, Example 2, Example 3, Example 4, or Example 5, such as... Figure 1 Figure 2 and Figure 6 As shown, the front cover 11 is fixedly connected to the front end of the housing 1 by locking screws. In this embodiment, four locking screws are used, which not only facilitates disassembly and installation, but also makes the connection more stable.

[0040] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, stators and rotors that are mature in the existing technology. The internal components of the cylinder adopt conventional models in the existing technology, and their internal structure belongs to the existing technology structure. Workers can complete the normal operation of them according to the existing technical manual. In addition, the circuit connection adopts conventional connection methods in the existing technology, and will not be described in detail here.

[0041] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A positioning automatic tool changer electric spindle, comprising a housing (1) and a spindle core (2) disposed within the housing (1), wherein a rotor sleeved on the spindle core (2) is disposed inside the housing (1), and a stator sleeved on the rotor is disposed inside the housing (1), a drive cylinder (3) is disposed at the rear end of the housing (1), a rear end cover (4) is disposed on the end face of the drive cylinder (3), a front end cover (11) is disposed at the front end of the housing (1), and a tool release / pull mechanism is disposed at the center of the spindle core (2), characterized in that: A nut (5) is provided between the housing (1) and the shaft core (2). A positioning part (6) is provided on the nut (5). A balancing part (7) is provided on the positioning part (6). The balancing part (7) and the nut (5) are fixedly connected by a fixing part (8).

2. The positioning automatic tool changer electric spindle as described in claim 1, characterized in that: The positioning component (6) includes a flange (61) disposed on the nut (5), a ring (62) disposed on the flange (61), and at least two positioning keys (63) disposed on the ring (62). The flange (61), the ring (62) and the positioning keys (63) are all integrally formed. The shaft core (2) passes through the flange (61) and the ring (62). The flange (61) is provided with grooves (611) spaced apart. The nut (5) corresponding to the grooves (611) is provided with mounting grooves. The fixing component (8) passes through the balancing component (7) and the grooves (611) in sequence to the mounting groove.

3. The positioning automatic tool changer electric spindle as described in claim 2, characterized in that: Two positioning keys (63) are used, while four grooves (611) are used. At least four mounting slots (51) are provided on the nut (5). Each groove (611) corresponds to one mounting slot (51) and they are connected together by the fastener (8).

4. The positioning automatic tool changer electric spindle as described in claim 1, 2, or 3, characterized in that: The balancing component (7) includes a fixing plate (71) fitted onto the positioning component (6). The fixing plate (71) has mounting holes (72) for mounting the fixing component (8), and balancing grooves (711) are evenly distributed at intervals on the fixing plate (71). A balancing screw (73) is installed in each balancing groove (711).

5. The positioning automatic tool changer electric spindle as described in claim 4, characterized in that: The fastener (8) is a screw.

6. The positioning automatic tool changer electric spindle as described in claim 1, 2, 3, or 5, characterized in that: Inside the housing (1), two bearings (12) are provided at the front end of the shaft core (2), and a spacer (13) is arranged between the two bearings (12).

7. The positioning automatic tool changer electric spindle as described in claim 1, 2, 3, or 5, characterized in that: At least two positioning grooves (21) are provided on the front end surface of the shaft core (2).

8. The positioning automatic tool changer electric spindle as described in claim 1, 2, 3, or 5, characterized in that: The front cover (11) is fixedly connected to the front end of the housing (1) by locking screws.

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