A parallel twin-spindle machining device

Abstract

This utility model provides a parallel dual-spindle machining device, belonging to the field of machining technology. It includes: two parallel and spaced-apart spindles; a turret positioned between the two spindles, with its axis parallel to the spindle axes; a first mounting base capable of linear movement in a horizontal direction, the movement direction of the first mounting base being perpendicular to the spindle axes; a second mounting base capable of linear movement on the first mounting base; and a third mounting base capable of linear movement on the second mounting base, the movement direction of the third mounting base being parallel to the spindle axes. The movement direction of the second mounting base and the movement direction of the first or third mounting base are located in the same vertical plane, and the movement direction of the second mounting base forms an acute angle with the horizontal plane. The turret is mounted on the third mounting base. The advantage is that while one spindle is machining, the other spindle can simultaneously complete workpiece loading, unloading, and material changing, shortening auxiliary time in batch processing.

Description

Technical Field

[0001] This utility model belongs to the field of processing technology, and in particular relates to a parallel dual-spindle processing device. Background Technology

[0002] Currently, in CNC lathes and other machining equipment, the spindle, as the core actuator, directly affects the equipment's processing efficiency and functionality. Traditional machining devices typically have only one spindle, which is used to clamp the workpiece and drive its rotation, working in conjunction with the cutting tools on the turret to complete turning and other machining operations. In this single-spindle structure, the processes of workpiece loading, clamping, machining, and unloading must be performed sequentially on the same spindle. When one workpiece is being machined, the loading, unloading, and material change operations of the next workpiece cannot be performed simultaneously. Therefore, in batch processing, the auxiliary time of the equipment (including downtime for loading and unloading workpieces) accounts for a large proportion, severely restricting the output of workpieces per unit time and making it difficult to meet the ever-increasing demand for high-efficiency production. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a machining device with dual spindles.

[0004] The objective of this utility model can be achieved through the following technical solution: a parallel dual-spindle machining device, comprising: Two parallel and spaced-apart spindles; A turret is positioned between the two spindles, and the axis of the turret is parallel to the axis of the spindles. A first mounting base capable of linear movement along a horizontal direction, the direction of movement of the first mounting base being perpendicular to the axis of the spindle; a second mounting base capable of linear movement is provided on the first mounting base, and a third mounting base capable of linear movement is provided on the second mounting base, the direction of movement of the third mounting base being parallel to the axis of the spindle, the direction of movement of the second mounting base being located in the same vertical plane as the direction of movement of the first mounting base or the third mounting base, and the direction of movement of the second mounting base forming an acute angle with the horizontal plane, the turret being mounted on the third mounting base.

[0005] Preferably, the moving direction of the second mounting base and the moving direction of the third mounting base are located in the same vertical plane.

[0006] Preferably, it also includes a vibratory feeder, a conveying component is provided on the side of the vibratory feeder, a through conveying channel is provided on the conveying component, one end of the conveying channel is connected to the discharge end of the vibratory feeder, and the other end of the conveying channel is provided with a receiving part, and a receiving recess is provided on the side of the receiving part, the receiving recess is used to accommodate the workpiece, and the receiving part can move linearly along its axial direction. A mechanical gripper is provided above the receiving part for gripping the workpiece in the receiving recess.

[0007] Preferably, a limiting plate is fixedly provided on the conveying channel, the length direction of the limiting plate is parallel to the moving direction of the receiving part, and the limiting plate is used to abut against the workpiece in the receiving recess.

[0008] Preferably, it also includes a housing, in which the spindle and the turret are both disposed, and the top of the housing is provided with an access port for the mechanical gripper to extend into.

[0009] Preferably, a sliding door is provided at the inlet, which can open or close the inlet.

[0010] Preferably, the mechanical gripper includes a mechanical arm, on which a switching rotary seat is provided. A loading gripper and a reversing gripper are fixedly provided on the switching rotary seat. The axis of the loading gripper is perpendicular to that of the reversing gripper. The switching rotary seat is configured to rotate about its axis so that the axis of one of the loading gripper and the reversing gripper is in the vertical direction and the axis of the other is in the horizontal direction, and the postures of the two can be switched.

[0011] Preferably, a collection box is provided at the bottom of the turret, and the vertical projection of the turret is located inside the collection box.

[0012] Preferably, the bottom wall of the collection box is flat, and there is a drop between the two ends of the collection box along its length.

[0013] Preferably, it also includes a hopper, wherein multiple stacking plates for placing workpieces are arranged in a spaced-apart manner within the hopper.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) While one spindle is processing, the other spindle can simultaneously load and unload the workpiece and change materials, which greatly shortens the auxiliary time in batch processing and significantly increases the output of workpieces per unit time. (2) Since the moving direction of the second mounting base is on the same vertical plane as the moving direction of the first or third mounting base, the projection of the second mounting base on the horizontal plane falls within the moving trajectory range of the first or third mounting base. The horizontal installation space will not be increased due to the setting of the second mounting base, which is especially suitable for machining environments where the installation space between the two spindles is extremely limited. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2yes Figure 1 Internal structure diagram; Figure 3 yes Figure 1 Schematic diagram of the installation structure of the turret; Figure 4 This is a three-dimensional structural diagram of a mechanical gripper; Figure 5 This is an assembly diagram of the conveyor channel and the receiving part; Figure 6 This is a schematic diagram of the three-dimensional structure of the silo.

[0016] In the diagram, 100 is the spindle; 200 is the turret; 201 is the first mounting base; 202 is the first guide rail; 203 is the second mounting base; 204 is the second guide rail; 205 is the third mounting base; 206 is the third guide rail; 300 is the vibratory feeder; 301 is the conveying channel; 302 is the receiving part; 303 is the receiving recess; 304 is the limiting plate; 400 is the housing; 401 is the extension entrance; 402 is the sliding door; 500 is the mechanical gripper; 501 is the robotic arm; 502 is the switching rotary seat; 503 is the loading gripper; 504 is the reversing gripper; 600 is the collection box; 700 is the hopper; 701 is the support structure; 702 is the stacking plate; 703 is the support plate; and 704 is the positioning protrusion. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0019] like Figures 1-6 As shown, this embodiment provides a parallel dual-spindle machining apparatus, including: Two parallel and spaced-apart spindles 100 are horizontally positioned. Each spindle 100 is driven by an independent rotary drive mechanism (e.g., a built-in spindle motor), allowing independent control of the rotation speed and direction of the workpiece it holds. This enables the two spindles 100 to perform the same or different machining operations. While one spindle 100 is machining, the other spindle 100 can simultaneously load, unload, and change workpieces, significantly reducing auxiliary time in batch processing and substantially increasing workpiece output per unit time.

[0020] The turret 200 is positioned between the two spindles 100, with its axis parallel to the axes of the spindles 100. The turret 200 has a generally disc-shaped structure, with several tool mounting positions evenly distributed circumferentially on its outer wall. Each mounting position is used to fix different types of machining tools, including but not limited to turning tools and end mills. The turret 200 is driven by a turret rotary motor to rotate around its own axis, switching the corresponding tool to the workpiece-facing position according to different machining processes.

[0021] A first mounting base 201 capable of linear movement in the horizontal direction is perpendicular to the axis of the spindle 100. Specifically, the machining apparatus includes a first guide rail 202 arranged perpendicular to the axis of the spindle 100. The first mounting base 201 is slidably mounted on the first guide rail 202 and is driven to reciprocate by a driving member. A second guide rail 204 is provided on the first mounting base 201, and a second mounting base 203 is slidably mounted on the second guide rail 204. A third guide rail 206 is provided on the second mounting base 203, and a third mounting base 205 is slidably mounted on the third guide rail 206. The movement direction of the third mounting base 205 is parallel to the axis of the spindle 100. A turret 200 is fixedly mounted on the third mounting base 205. The movement direction of the second mounting base 203 is located in the same vertical plane as the movement direction of the first mounting base 201 or the third mounting base 205. That is, the tilt direction of the second mounting base 203 is constrained to one of the following two cases: The moving direction of the second mounting base 203 and the moving direction of the first mounting base 201 (perpendicular to the main shaft axis) are located in the same vertical plane; The movement direction of the second mounting base 203 and the movement direction of the third mounting base 205 (parallel to the main shaft axis) are located in the same vertical plane.

[0022] Regardless of the scenario described above, the movement direction of the second mounting base 203 forms an acute angle with the horizontal plane, causing it to generate both vertical and horizontal displacement components as it moves along its inclined direction. When the vertical position of the turret 200 needs adjustment, the second mounting base 203 moves along its inclined direction. This vertical displacement component of the inclined movement directly drives the third mounting base 205 and the turret 200 mounted on it to rise and fall, achieving height adjustment of the turret 200. Simultaneously, this inclined movement also generates an additional horizontal displacement component. To precisely control the final horizontal position of the turret 200, linkage compensation is required from the mounting base located in the same vertical plane as the second mounting base 203. Through this linkage control, the turret 200 can move flexibly in three-dimensional space, enabling turning and milling operations on workpieces. This is particularly suitable for machining environments with extremely limited installation space.

[0023] Since the oblique movement of the second mounting base 203 can generate a controllable vertical displacement component, the turret 200 has the ability to feed in the vertical direction. With the help of the cutting tool, milling can be realized, thus integrating the dual functions of turning and milling into this device.

[0024] In one specific implementation, if the second mounting base 203 and the third mounting base 205 are located in the same vertical plane, the horizontal displacement component generated by the oblique movement is compensated or superimposed by the movement of the third mounting base 205.

[0025] In this application, the three mounting bases have a clear and complementary functional division during machining, as follows: the first mounting base 201 is mainly used to determine the cutting depth of milling; the linkage between the second mounting base 203 and the third mounting base 205 is mainly used to determine the precise position of the milling tool in the machining space.

[0026] When the second mounting base 203 and the third mounting base 205 perform coordinated interpolation, the milling cutter can follow a diagonal, circular, or curved trajectory, thereby achieving precise positioning and movement of the milling cutter on the axial section of the workpiece. Furthermore, this application also includes a feeding mechanism. The feeding mechanism includes a vibratory feeder 300, which is fixedly mounted on one side of the machine tool bed. A conveying component is provided beside the vibratory feeder 300, and a through conveying channel 301 is provided inside it along its length. The cross-sectional shape of the conveying channel 301 is adapted to the contour of the workpiece to ensure that the workpiece can slide smoothly within the channel without overturning or jamming. One end of the conveying channel 301 (the feeding end) is connected to the discharge end of the vibratory feeder 300. The other end of the conveying channel 301 (the discharge end) is provided with a receiving part 302. The receiving part 302 has a columnar or block-shaped structure, and a receiving recess 303 is provided on its side. The outline of the receiving recess 303 is adapted to the shape of the workpiece to accommodate and position a single workpiece. The receiving part 302 can move linearly along its own axial direction, thereby switching back and forth between the "receiving position" and the "picking position".

[0027] Specifically, when the receiving part 302 moves to the discharge end of the conveying channel 301, the receiving recess 303 aligns with the discharge port of the conveying channel 301. At this time, a workpiece pushed out from the conveying channel 301 falls into the receiving recess 303, completing the single-piece receiving. Subsequently, the receiving part 302 moves along its axial direction, carrying the receiving recess 303 containing the workpiece away to the picking position for subsequent picking. In the above process, since the discharge port of the conveying channel 301 is closed by the side wall of the receiving part 302 after the receiving part 302 leaves the receiving position, subsequent workpieces cannot continue to move forward. Therefore, only one workpiece is sent out to the picking position at a time.

[0028] A limiting plate 304 is fixedly installed on the conveying channel 301. Specifically, the limiting plate 304 is a long, thin plate structure, and its length direction is parallel to the axial movement direction of the receiving part 302. The limiting plate 304 is fixedly installed near the discharge end of the conveying component. When the receiving part 302 carries the workpiece away from the conveying channel 301, the side of the limiting plate 304 can abut against the side of the workpiece, applying a continuous constraint force to the workpiece, so that the workpiece is always fixed in the same precise position within the receiving recess 303, ensuring that the workpiece posture is consistent during subsequent material handling.

[0029] A mechanical gripper 500 is provided above the receiving part 302 for gripping and releasing workpieces. The mechanical gripper 500 is mounted on the machine tool bed via a bracket. When the receiving part 302 moves to the picking position, the mechanical gripper 500 extends downward to clamp and lift the workpiece in the receiving recess 303, and then transfers it to the first spindle 100 or the second spindle 100 for clamping.

[0030] The system also includes a housing 400, two spindles 100, and a turret 200, all housed inside the housing 400. The top of the housing 400 has an access port 401 that extends through the top wall of the housing 400, allowing a mechanical gripper 500 to extend into the housing 400. After gripping a workpiece, the mechanical gripper 500 descends from above the housing 400, passes through the access port 401, and is then transferred to the corresponding spindle 100 for clamping.

[0031] By enclosing the spindle 100 and turret 200 within the housing 400, the cutting fluid and chips generated during machining are effectively prevented from splashing into the external environment, ensuring the safety of operators and the cleanliness of the workshop environment.

[0032] like Figure 1 As shown, a sliding door 402 is provided at the inlet 401, which can open or close the inlet 401. Specifically, a sliding guide rail is provided on the top wall of the housing 400, and its extension direction is consistent with the movement direction of the sliding door 402. The sliding door 402 is slidably mounted on the sliding guide rail. The sliding door 402 is driven by a drive cylinder or a small drive motor, and can reciprocate linearly on the sliding guide rail, thereby switching between the "open position" and the "closed position".

[0033] like Figure 4 As shown, the mechanical gripper 500 includes a mechanical arm 501, the upper end of which is mounted on the machine tool frame or column, and the lower end of which is provided with a switching rotary seat 502. The switching rotary seat 502 contains a rotary drive mechanism (such as a rotary cylinder or servo motor), and a loading gripper 503 and a reversing gripper 504 are fixedly mounted on the switching rotary seat 502. Both the loading gripper 503 and the reversing gripper 504 are pneumatic or electric opening and closing grippers, and their functions are different.

[0034] The axes of the loading gripper 503 and the reversing gripper 504 are perpendicular, that is, they are fixed to the switching rotary seat 502 at an angle of 90°. The switching rotary seat 502 is configured to rotate about its own rotation axis, so as to drive the loading gripper 503 and the reversing gripper 504 fixed thereon to rotate together, thereby switching the loading gripper 503 and the reversing gripper 504 between the horizontal and vertical directions.

[0035] By setting up a feeding gripper 503 and a reversing gripper 504 with their axes perpendicular to each other, and cooperating with the rotation function of the switching rotary seat 502, a single robotic arm 501 can simultaneously complete two different directional operations: "picking up material from the receiving section 302" and "reversing clamping." This eliminates the need for two independent mechanical grippers 500, simplifying the equipment structure and reducing manufacturing costs. Moreover, the perpendicularity of the axes of the feeding gripper 503 and the reversing gripper 504 allows them to interchange their working directions after the switching rotary seat 502 rotates, achieving a rapid reversing function with "one-turn switching," resulting in short reversing time and fast response speed.

[0036] Furthermore, a collection box 600 is provided at the bottom of the turret 200. Specifically, the collection box 600 is a box-shaped container with an open top, and its overall shape is a cuboid trough structure. The opening of the collection box 600 faces upwards and is used to collect chips, cutting fluid and other machining debris that fall from the area of ​​the turret 200 during the machining process.

[0037] The vertical projection of the turret 200 lies within the collection box 600. That is, when viewed from directly above, the entire outline of the turret 200 falls within the open area of ​​the collection box 600. In other words, the length and width of the collection box 600 are both larger than the horizontal dimensions of the turret 200, ensuring that any chips or cutting fluid falling from the turret 200 during tool changes or machining at different stations can be completely collected by the collection box 600 and will not leak outside the collection box 600.

[0038] The bottom wall of the collection box 600 is planar, and there is a height difference between its two ends along its length. Specifically, the collection box 600 includes a bottom wall and side walls surrounding the bottom wall. The bottom wall is a single flat plate with a smooth surface to facilitate the smooth flow of chips and cutting fluid. The bottom wall extends along the length of the collection box 600, with a first end and a second end. The first end of the bottom wall is lower in the vertical direction than the second end, meaning the bottom wall is generally inclined, gradually decreasing in height from the second end to the first end. A drain outlet is provided on the side wall corresponding to the first end to discharge the chips and cutting fluid accumulated in the collection box 600.

[0039] like Figure 2 , Figure 6As shown, it also includes a hopper 700. The hopper 700 is located on one side of the housing 400, within the range of motion of the mechanical gripper 500, so that the mechanical gripper 500 can place workpieces onto the stacking plate 702 on top of the hopper 700. A support structure 701 (such as a support boss) is provided inside the hopper 700. A support plate 703, which is a flat plate structure, is detachably provided on the bottom of the stacking plate 702. When a preset number of workpieces are placed on the stacking plate 702, the support plate 703 is moved into the hopper 700 and placed on the support structure 701. Positioning protrusions 704 are provided at the four corners of the support plate 703. The positioning protrusions 704 protrude upward from the upper surface of the support plate 703 for positioning and engaging with another support plate 703 above. Correspondingly, each support plate 703 has a corresponding insertion hole on its bottom (i.e., lower surface). When two adjacent support plates 703 are stacked, the positioning protrusion 704 of the lower support plate 703 is inserted into the insertion hole at the bottom of the upper support plate 703, thereby achieving precise positioning and fixation between the upper and lower support plates 703.

[0040] The stacking plate 702 and the support plate 703 are detachably connected, and the support plate 703 and the support plate 703 are connected to each other, so that the operator can remove the stacking plate 702 to remove the workpieces in batches.

[0041] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0043] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A parallel dual-spindle machining apparatus, characterized in that, include: Two parallel and spaced-apart spindles; A turret is positioned between the two spindles, and the axis of the turret is parallel to the axis of the spindles. A first mounting base capable of linear movement along a horizontal direction, the direction of movement of the first mounting base being perpendicular to the axis of the spindle; a second mounting base capable of linear movement is provided on the first mounting base, and a third mounting base capable of linear movement is provided on the second mounting base, the direction of movement of the third mounting base being parallel to the axis of the spindle, the direction of movement of the second mounting base being located in the same vertical plane as the direction of movement of the first mounting base or the third mounting base, and the direction of movement of the second mounting base forming an acute angle with the horizontal plane, the turret being mounted on the third mounting base.

2. The parallel twin-spindle machining apparatus according to claim 1, characterized in that, The moving direction of the second mounting base and the moving direction of the third mounting base are located in the same vertical plane.

3. The parallel twin-spindle machining apparatus according to claim 1, characterized in that, It also includes a vibratory feeder, a conveyor is provided on the side of the vibratory feeder, the conveyor is provided with a through conveying channel, one end of the conveying channel is connected to the discharge end of the vibratory feeder, and the other end of the conveying channel is provided with a receiving part, and the side of the receiving part is provided with a receiving recess, the receiving recess is used to accommodate the workpiece, and the receiving part can move linearly along its axial direction. A mechanical gripper is provided above the receiving part for gripping the workpiece in the receiving recess.

4. The parallel twin-spindle machining apparatus according to claim 3, characterized in that, A limiting plate is fixedly installed on the conveying channel. The length direction of the limiting plate is parallel to the moving direction of the receiving part, and the limiting plate is used to abut against the workpiece in the receiving recess.

5. The parallel twin-spindle machining apparatus according to claim 3, characterized in that, It also includes a housing, in which the spindle and the turret are both housed, and the top of the housing has an access port for the mechanical gripper to enter.

6. The parallel twin-spindle machining apparatus according to claim 5, characterized in that, A sliding door is provided at the inlet, which can open or close the inlet.

7. The parallel twin-spindle machining apparatus according to claim 3, characterized in that, The mechanical gripper includes a robotic arm with a switching rotary seat. A loading gripper and a reversing gripper are fixedly mounted on the switching rotary seat. The axis of the loading gripper is perpendicular to that of the reversing gripper. The switching rotary seat is configured to rotate around its axis so that the axis of one of the loading gripper and the reversing gripper is in the vertical direction and the axis of the other is in the horizontal direction, and the postures of the two can be switched.

8. The parallel twin-spindle machining apparatus according to claim 1, characterized in that, A collection box is provided at the bottom of the turret, and the vertical projection of the turret is located inside the collection box.

9. The parallel twin-spindle machining apparatus according to claim 8, characterized in that, The bottom wall of the collection box is flat, and there is a height difference between the two ends of the collection box along its length.

10. The parallel twin-spindle machining apparatus according to claim 1, characterized in that, It also includes a hopper, in which multiple layers of stacking plates for placing workpieces are arranged at intervals.

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