Double worktable exchange positioning structure of horizontal machining center

Abstract

The utility model relates to the technical field of workstation, disclose a double workstation exchange positioning structure of horizontal machining center, the utility model solves the problem that current double -position adjustment is difficult to automatic fixation, and the problem of easy wear in the use process. A double workstation exchange positioning structure of horizontal machining center, including fixed block, the both sides of fixed block are provided with limit mechanism, the below of fixed block is connected with motor, the output of motor is connected with drive link, the above of drive link is connected with movable block, the above of movable block is connected with two workstations, the below of movable block's center is connected with arc plate, the outside of arc plate is provided with guide strip, the inside of arc plate is provided with inner magnet, the below of arc plate is provided with universal wheel, guarantee arc plate in the middle through being provided with magnet structure, prevent wear, realize automatic plug -in work through being provided with limit mechanism, need not manual operation of staff.

Description

Technical Field

[0001] This utility model relates to the field of workbench technology, specifically to a dual-workbench exchange positioning structure for a horizontal machining center. Background Technology

[0002] In aerospace, automotive parts, and high-end equipment manufacturing, horizontal machining centers have become core processing equipment for complex box-shaped and frame-shaped parts due to their advantages such as multi-faceted machining capabilities and high stability. With the continuous upgrading of the manufacturing industry's demands for "high efficiency, high precision, and flexibility," the dual-table exchange system, as a key component for improving the continuous processing efficiency of equipment, directly determines the overall performance of the machining center through its positioning accuracy, exchange speed, heavy-duty adaptability, and ease of maintenance.

[0003] For example, the horizontal machining center with a double-exchange worktable disclosed in announcement number "CN211540269U" not only ensures the stability of the worktable during rotation and improves the convenience of workpiece fixing, but also improves the convenience and accuracy of worktable positioning operations. However, the following problems still exist in the use of this equipment:

[0004] Existing worktable exchanges are mostly fixed by pins and springs, which is cumbersome and cannot be fully automated. When adjusting the work position, the limit is mostly set by sliders, but the sliders are prone to wear and require frequent replacement. Utility Model Content

[0005] The purpose of this invention is to provide a dual-worktable exchange positioning structure for a horizontal machining center. By using this device, the problems of existing dual-worktable adjustments being difficult to automate and fix, and prone to wear during use, are solved.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-worktable exchange positioning structure for a horizontal machining center, comprising a fixed block, limit mechanisms on both sides of the fixed block, a motor connected below the fixed block, a drive rod connected to the output end of the motor, a movable block connected above the drive rod, two worktables connected above the movable block, an arc-shaped plate connected below the center of the movable block, a guide strip provided on the outer side of the arc-shaped plate, an inner magnet provided on the inner side of the arc-shaped plate, and casters provided below the arc-shaped plate.

[0007] Preferably, a support leg is provided below the fixed block, and the fixed block is connected to the motor housing by a threaded pin. The motor drives the movable block to rotate through a drive rod, thereby achieving automatic rotation and facilitating subsequent workstation adjustments.

[0008] Preferably, the limiting mechanism includes sliding grooves on both sides of the fixed block, three slots are provided around the sliding grooves, and the slots are slidably connected to the insertion block. The insertion block is slidably connected to the linkage block. The linkage block is located below the movable block, and the insertion block is connected inside the linkage block. The linkage block is fixedly connected to the movable block. An adsorption magnet is provided on the top inner side of the linkage block. The insertion block is automatically adsorbed by the adsorption magnet to realize the removal operation, and the pin is automatically fixed by gravity.

[0009] Preferably, the movable block is fixedly connected to the arc-shaped plate, and omnidirectional wheels are evenly distributed at equal intervals below the arc-shaped plate. The omnidirectional wheels are slidably connected to the fixed block. The omnidirectional wheels enable the arc-shaped plate to slide stably and prevent wear on the bottom.

[0010] Preferably, the guide strips are arranged in a ring around the outer ring of the central groove. The guide strips and the fixing block are interlocked. The center of the arc-shaped plate coincides with the center of the central groove. There is a gap between the guide strips and the arc-shaped plate. The guide strips are made of polytetrafluoroethylene. The guide strips are used to limit the arc-shaped plate and prevent it from hitting the outside of the central groove when it moves outward.

[0011] Preferably, the inner magnets are arranged in a ring at the inner ring of the central groove. The inner magnets are electromagnets. The distance between the inner magnets and the arc plate is the same as the distance between the guide strip and the arc plate. The arc plate is fixed in the center by the inner magnets to ensure that its center is aligned.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The curved plate is centered and wear is prevented by setting up a magnetic structure: The curved plate works with the casters at the bottom to drive the moving block to rotate stably, so that the worktable can be exchanged stably. At the same time, guide strips are set on both sides of the curved plate and work with the inner magnets. The inner magnets keep the curved plate in the center position to prevent the curved plate from moving. The guide strips protect the curved plate and prevent it from hitting the outside of the central groove.

[0014] 2. Automatic insertion and removal is achieved by setting a limit mechanism, eliminating the need for manual operation: When changing the workbench position, turn on the power switch of the magnetic magnet to energize it and attract the insertion block, causing the insertion block to rise and release the limit fixation. After the adjustment is completed, the power is turned off, and the insertion block automatically falls and is fixed under the action of gravity. The entire process requires no manual operation from the operator. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the fixing block of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the movable block of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the linkage block of this utility model;

[0019] Figure 5 For the present utility model Figure 2 A magnified structural diagram at point A in the diagram.

[0020] In the diagram: 1. Fixed block; 2. Limiting mechanism; 201. Sliding groove; 202. Linkage block; 203. Adsorption magnet; 204. Insertion block; 3. Movable block; 4. Worktable; 5. Motor; 6. Arc plate; 7. Guide bar; 8. Inner magnet; 9. Universal wheel; 10. Drive rod; 11. Center groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1:

[0023] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0024] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5A dual-worktable exchange positioning structure for a horizontal machining center includes a fixed block 1. Limiting mechanisms 2 are provided on both sides of the fixed block 1 to ensure the movable block 3 remains fixed after adjustment. A motor 5 is connected below the fixed block 1, enabling automatic rotation without manual operation. A drive rod 10 is connected to the output end of the motor 5, which is connected to the movable block 3 for easy rotation. The movable block 3 is connected above the drive rod 10, supporting the worktable 4 for easy adjustment. Two worktables 4 are connected, which fix the workpiece to ensure processing. An arc-shaped plate 6 is connected below the center of the movable block 3. The arc-shaped plate 6 supports the movable block 3 to ensure its stability. A guide strip 7 is provided on the outer side of the arc-shaped plate 6. The guide strip 7 limits the arc-shaped plate 6 to prevent it from hitting the outer center groove 11. An inner magnet 8 is provided on the inner side of the arc-shaped plate 6. The inner magnet 8 repels the arc-shaped plate 6 to prevent it from moving too close to the inner side and to ensure it is centered. A caster wheel 9 is provided below the arc-shaped plate 6. The caster wheel 9 supports the arc-shaped plate 6 and prevents it from wearing down the bottom.

[0025] The present invention will be further described below with reference to the embodiments.

[0026] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A support leg is provided below the fixed block 1. The fixed block 1 is connected to the housing of the motor 5 by a threaded nail. The motor 5 drives the movable block 3 to rotate through the drive rod 10. The motor 5 achieves automatic rotation, which facilitates subsequent workstation adjustment.

[0027] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The limiting mechanism 2 includes sliding grooves 201 located on both sides of the fixed block 1. The sliding grooves 201 have three slots around their perimeter, and the slots are connected to the insertion block 204 in a sliding connection. The insertion block 204 is also connected to the linkage block 202 in a sliding connection. The linkage block 202 is located below the movable block 3. The insertion block 204 is connected inside the linkage block 202. The linkage block 202 is fixedly connected to the movable block 3. An adsorption magnet 203 is provided on the top inner side of the linkage block 202. The insertion block 204 is automatically adsorbed by the adsorption magnet 203 to achieve the removal operation. The automatic pin is fixed by gravity.

[0028] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The movable block 3 is fixedly connected to the arc plate 6. Universal wheels 9 are evenly distributed at equal intervals below the arc plate 6. The universal wheels 9 are slidably connected to the fixed block 1. The universal wheels 9 allow the arc plate 6 to slide stably, preventing bottom wear. Guide strips 7 are arranged in a ring around the outer ring of the central groove 11. Guide strips 7 and fixed block 1 have a mutually engaging structure. The center of the arc plate 6 coincides with the center of the central groove 11. There is a gap between the guide strips 7 and the arc plate 6. The guide strips 7 are made of polytetrafluoroethylene (PTFE). The guide strips 7 limit the arc plate 6, preventing it from impacting the outer side of the central groove 11 when moving outwards. Inner magnets 8 are arranged in a ring around the inner ring of the central groove 11. The inner magnets 8 are electromagnets. The gap between the inner magnets 8 and the arc plate 6 is the same as the gap between the guide strips 7 and the arc plate 6. The inner magnets 8 fix the arc plate 6 in the center, ensuring its center alignment.

[0029] Working principle: First, when the two worktables 4 need to be exchanged, the control unit sends a working current to the adsorption magnet 203 of the limiting mechanism 2. The adsorption magnet 203 generates a strong magnetic force, which generates an upward adsorption force on the insertion block 204 made of magnetically conductive material. The adsorption force overcomes the gravity of the insertion block 204, causing the insertion block 204 to slide vertically upward along the slot of the sliding groove 201 until its lower end is completely disengaged from the slot of the linkage block 202. At this time, the rotation constraint of the movable block 3 is released, and it enters a rotatable state, realizing automatic unlocking. After unlocking, the motor 5 below the fixed block 1 receives a drive signal, and the output torque is transmitted to the movable block 3 through the drive rod 10. The moving block 3 rotates around the axis of the drive rod 10. During rotation, the inner magnet 8 is connected to a current source, repelling the arc-shaped plate 6 from the inside. Because the inner magnet 8 has an arc-shaped structure, the repulsive force is the same on all four sides, ensuring that the arc-shaped plate 6 remains centered in the center of the central groove 11. When the arc-shaped plate 6 deviates, it will collide with the surface of the guide strip 7. The guide strip 7 itself has a low coefficient of friction and low hardness, so it will not scratch the arc-shaped plate 6. When the arc-shaped plate 6 deviates, one side of it approaches the inner magnet 8, increasing the repulsive force of the inner magnet 8. Then, it returns to the center position through the repulsive force of the inner magnet 8, ensuring that the moving block 3 rotates coaxially around the drive rod 10 and preventing the worktable 4 from being misaligned due to deviation.

[0030] Meanwhile, after the movable block 3 drives the worktable 4 to complete its rotation, the motor 5 stops outputting torque and locks the drive rod 10. At the same time, the magnet 203 is de-energized, the magnetic force disappears, and the insertion block 204 loses its attraction force and falls vertically along the slot of the sliding groove 201 under its own gravity, re-embedding into the slot of the linkage block 202. Because the slot of the sliding groove 201 and the slot of the linkage block 202 are precisely designed to correspond one-to-one, after the insertion block 204 falls into place, the movable block 3 is limited again, realizing the mechanical rigid positioning of the worktable 4.

[0031] It should be noted that the overall power-on and power-off, as well as the starting and stopping of motor 5, are centrally controlled by the PLC controller. This is existing technology and will not be described in detail here.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double table exchange positioning structure of a horizontal machining center, comprising a fixed block, characterized in that: Limiting mechanisms are provided on both sides of the fixed block. A motor is connected to the bottom of the fixed block. A drive rod is connected to the output end of the motor. A movable block is connected above the drive rod. Two worktables are connected above the movable block. An arc-shaped plate is connected below the center of the movable block. A guide strip is provided on the outer side of the arc-shaped plate. An inner magnet is provided on the inner side of the arc-shaped plate. A caster wheel is provided below the arc-shaped plate.

2. The double table exchange positioning structure of a horizontal machining center according to claim 1, characterized in that: A support leg is provided below the fixed block. The fixed block is connected to the motor housing by a threaded pin. The motor drives the movable block to rotate through a drive rod.

3. The dual-table exchange positioning structure of a horizontal machining center according to claim 1, characterized in that: The limiting mechanism includes sliding grooves on both sides of the fixed block. Three slots are provided around the sliding grooves, and the slots are connected to the insertion block in a sliding connection. The insertion block is connected to the linkage block in a sliding connection. The linkage block is located below the movable block. The insertion block is connected inside the linkage block. The linkage block is connected to the movable block in a fixed connection. An adsorption magnet is provided on the top inner side of the linkage block.

4. The dual-table exchange positioning structure of a horizontal machining center according to claim 2, characterized in that: The movable block is fixedly connected to the arc-shaped plate, and omnidirectional wheels are evenly distributed at equal intervals below the arc-shaped plate. The omnidirectional wheels are slidably connected to the fixed block.

5. The dual-table exchange positioning structure of a horizontal machining center according to claim 4, characterized in that: The guide strips are arranged in a ring around the outer ring of the central groove. The guide strips and the fixing block are interlocked. The center of the arc plate coincides with the center of the central groove. There is a gap between the guide strips and the arc plate. The guide strips are made of polytetrafluoroethylene.

6. The dual-table exchange positioning structure of a horizontal machining center according to claim 5, characterized in that: The inner magnets are arranged in a ring at the inner ring of the central groove. The inner magnets are electromagnets. The distance between the inner magnets and the arc plate is the same as the distance between the guide strip and the arc plate.

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