A type of bed support column structure

Abstract

This utility model belongs to the field of slotting machine technology, specifically a slotting machine column structure, which includes a slotting head. Two movable linear guides are symmetrically mounted on the top of the slotting head via screws. A common moving linear guide is slidably mounted on the top of the two movable linear guides. An auxiliary plug is mounted on the top of the moving linear guide. A lead screw is rotatably mounted inside the slotting head via bearings. The lead screw is externally threaded to upper and lower movable blocks, which are fixedly mounted to the bottom of the moving linear guide. This utility model achieves high rigidity, high precision, high stability, and high safety of the auxiliary plug's vertical linear movement through a combination of "soft and hard guides" (precision movable linear guide guidance and high-rigidity hard linear guide support), precise controllable drive of a servo motor and electromagnetic clutch, lead screw transmission, and a stable base and positioning design, thereby meeting the process requirements of high-surface-finish slotting machining.

Description

Technical Field

[0001] This utility model relates to the field of inserting bed technology, and in particular to an inserting bed column structure. Background Technology

[0002] Metal cutting machine tools are used to machine groove-like features. During machining, the workpiece on the worktable moves longitudinally, laterally, or rotary, while the cutter reciprocates up and down to cut the workpiece. The ram of the cutter, carrying the tool post, reciprocates along the guide rails of the column. The worktable, with the workpiece mounted, can use upper and lower slides for longitudinal, transverse, and rotary feed movements. In keyway cutters, the worktable and bed are integrated. The tool shank, extending upwards from the bed through the workpiece hole, carries the cutter in a reciprocating motion while simultaneously providing intermittent feed. Workpiece mounting is not restricted by the column like in ordinary cutters, making it suitable for machining keyways in holes of large parts. The variety of machining types and specifications makes frequent tool changes and adjustments inconvenient, resulting in low work efficiency and poor applicability.

[0003] Traditional structures have poor rigidity and are prone to vibration and deformation when subjected to cutting forces, resulting in low workpiece surface finish, high friction or insufficient guiding accuracy of the guide rail system, causing crawling and uneven movement, affecting machining accuracy, and lacking effective anti-torsional load design and stable auxiliary support positioning points. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of traditional structures, such as poor rigidity, easy vibration and deformation under cutting force, resulting in low workpiece surface finish, large friction of the guide rail system or insufficient guiding accuracy, resulting in crawling and uneven movement, affecting machining accuracy, and lack of effective anti-torsional load design and stable auxiliary support positioning points. Therefore, a new slotting machine column structure is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A slotting machine column structure includes a slotting head. Two movable linear guides are symmetrically mounted on the top of the slotting head via screws. A common moving linear guide is slidably mounted on the top of the two movable linear guides. An auxiliary plug is mounted on the top of the moving linear guide. A lead screw is rotatably mounted inside the slotting head via bearings. Upper and lower movable blocks are externally threaded onto the lead screw. The upper and lower movable blocks are fixedly mounted to the bottom of the moving linear guide. A power mechanism is mounted on the outside of the lead screw. Multiple head positioning pins are mounted on the outside of the slotting head.

[0007] Preferably, the power mechanism includes a servo motor and an electromagnetic clutch, and the output shaft of the servo motor is connected to a lead screw via the electromagnetic clutch.

[0008] Preferably, two movable rail sliders are fixedly installed at the bottom of the movable rail, and each of the two movable rail sliders has a movable rail groove at its bottom, and the two movable rail grooves are slidably connected to the outer side of the two movable rails.

[0009] Preferably, both sides of the top of the slotting head are fitted with rigid linear guides by screws, and the top of each rigid linear guide has multiple positioning grooves.

[0010] Preferably, a lead screw limiting head is installed at the outer end of the lead screw, and a bolt is installed on the lead screw limiting head. The lead screw limiting head is installed at the outer end of the lead screw by the bolt.

[0011] The beneficial effects of the aforementioned bed support column structure in this utility model are as follows:

[0012] 1. High precision and high rigidity: The system employs a sliding fit between dual movable and sliding linear guides, combined with rigid linear guides to provide stable support, forming a "soft (movable linear guide) and hard (rigid linear guide) combination" guide system. This design significantly improves the rigidity and stability of the entire machine head system, effectively resisting vibrations and deformations caused by cutting forces, which is key to achieving high-gloss finishes on products.

[0013] 2. Smooth and stable movement: The design of the movable linear guide slider and movable linear guide groove, together with the precision movable linear guide, ensures that the moving linear guide and auxiliary plug move extremely smoothly and stably when moving up and down. The friction is small, the crawling phenomenon is reduced, and the processing accuracy and surface quality are improved.

[0014] 3. Precise feed control: The servo motor drives the lead screw via an electromagnetic clutch, achieving high-precision, programmable control of the auxiliary plug position. The servo motor provides precise speed and position commands, while the electromagnetic clutch allows for quick and reliable engagement or disengagement of power (e.g., during emergency stops, reversals, or manual adjustments).

[0015] 4. Reliable position holding: When the power is off or when it is necessary to hold the position, the electromagnetic clutch can disconnect the power connection. At the same time, relying on the self-locking characteristics of the lead screw itself (usually the lead screw and nut pair has self-locking properties) or in conjunction with the brake (if the clutch is integrated), it ensures that the upper and lower moving blocks and auxiliary plug are reliably locked in any position, preventing accidental slippage caused by gravity or vibration.

[0016] 5. Sturdy structure, easy to install and position:

[0017] The symmetrically distributed double movable rails and double rigid rails provide excellent resistance to torsional loads.

[0018] The head positioning pin ensures the precise positioning and secure installation of the slotting head on the machine.

[0019] The locating slots on the rigid linear guide provide additional positioning or clamping points, facilitating the installation and fixing of tooling fixtures or other accessories, and enhancing the overall rigidity of the system.

[0020] Safety protection: The lead screw limit head is installed on the outer end of the lead screw by bolts, which plays a mechanical limiting role to prevent the upper and lower moving blocks from moving beyond their travel range due to control failure or other reasons, thus protecting the safety of the equipment.

[0021] Maintainability and adjustability: Both the movable and rigid linear guides are screw-mounted for easy disassembly, replacement, or adjustment. The lead screw limit head is also fixed with bolts, and its position is adjustable.

[0022] This invention achieves high rigidity, high precision, high stability, and high safety of the auxiliary plug's vertical linear motion through a combination of "soft and hard guide rails" (precision movable linear guide rail guidance and high rigidity hard linear guide rail support), precision controllable drive of servo motor + electromagnetic clutch, lead screw transmission, and stable base and positioning design, thereby meeting the process requirements of high-finish planing machining. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a bed support column proposed in this utility model;

[0024] Figure 2 This is a side view of a bed support column structure proposed in this utility model;

[0025] Figure 3 This is a schematic diagram of the upward-view structure proposed in this utility model;

[0026] Figure 4 This is a side view of the present invention.

[0027] In the diagram: 1. Slotting machine head; 11. Machine head positioning pin; 2. Servo motor; 21. Electromagnetic clutch; 22. Lead screw; 221. Lead screw limit head; 23. Moving linear guide; 3. Movable linear guide; 31. Movable linear guide slider; 32. Movable linear guide groove; 33. Upper and lower movable blocks; 4. Auxiliary plug; 5. Rigid linear guide; 51. Positioning groove. Detailed Implementation

[0028] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this embodiment, and not all embodiments.

[0029] Example 1

[0030] The following is combined Figures 1-4 This application will be described in further detail.

[0031] A slotting machine column structure includes a slotting head 1. Two movable linear guides 3 are symmetrically mounted on the top of the slotting head 1 via screws. A common moving linear guide 23 is slidably mounted on the top of the two movable linear guides 3. An auxiliary plug 4 is mounted on the top of the moving linear guide 23. A lead screw 22 is rotatably mounted inside the slotting head 1 via bearings. Upper and lower movable blocks 33 are externally threaded onto the lead screw 22. The upper and lower movable blocks 33 are fixedly mounted to the bottom of the moving linear guide 23. A power mechanism is mounted on the outside of the lead screw 22. Multiple head positioning pins 11 are mounted on the outside of the slotting head 1.

[0032] Specifically, the slotting head 1 is the core base and support of the entire column structure. It houses the main transmission components, such as the lead screw, bearings, and guide rail mounting surfaces. The outer head locating pin 11 is used to precisely and securely mount the entire head onto the slotting body.

[0033] Auxiliary plug 4 is used as the final working component for the slotting machine to perform machining operations, such as a tool mount. Its vertical position is precisely controlled by the entire drive and guide rail system.

[0034] The upper and lower movable block 33 is threadedly engaged with the lead screw 22, converting the rotational motion of the lead screw into its own linear motion. It is directly fixedly connected to the bottom of the moving rail 23, thereby driving the moving rail and the auxiliary plug to move.

[0035] The movable guide slider 31 is fixed to the bottom of the movable guide 23, and the movable guide groove 32 on it slides precisely with the outer contour of the movable guide 3. This structure constrains the movable guide 23 to the movable guide 3, ensuring that it can only move in a straight line along the trajectory specified by the movable guide 3, and transmits the guide load.

[0036] In this embodiment, the power mechanism includes a servo motor 2 and an electromagnetic clutch 21. The output shaft of the servo motor 2 is connected to the lead screw 22 through the electromagnetic clutch 21.

[0037] In this embodiment, two movable rail sliders 31 are fixedly installed at the bottom of the movable rail 23. The bottom of each movable rail slider 31 is provided with a movable rail groove 32, and the two movable rail grooves 32 are slidably connected to the outer side of the two movable rails 3.

[0038] Specifically, the movable guide rail 3 serves as the precision guide base for the moving guide rail 23. The two symmetrically installed movable guide rails provide a precise linear motion trajectory. They bear the main guide loads, lateral forces, and overturning moments. Their "movable" characteristic may refer to adjustable preload or specific damping / elasticity to adapt to requirements, achieving high rigidity in conjunction with the rigid guide rail.

[0039] The movable linear guide 23 serves as the direct support platform and moving part for the auxiliary plug 4. It slides on the movable linear guide 3 via the bottom movable linear guide slider 31, achieving precise vertical linear motion. It connects the auxiliary plug 4 to the lead screw drive mechanism.

[0040] In this embodiment, both sides of the top of the slotting head 1 are fitted with rigid linear guides 5 by screws, and the top of each of the two rigid linear guides 5 is provided with multiple positioning grooves 51.

[0041] Specifically, the rigid linear guides 5 provide strong rigid support and auxiliary guidance. Mounted on both sides of the top of the slotting head 1, their positioning slots 51 can be used to install positioning blocks, fixtures, or other accessories requiring a fixed reference. They work in conjunction with the movable linear guide system to share the load, significantly improving the bending and torsional stiffness of the entire motion system, reducing vibration, and are a key "hard" support component ensuring high-gloss machining.

[0042] The positioning groove 51 is a recess in the top of the rigid linear guide 5. It is used for precise positioning and clamping of tooling, fixtures or other auxiliary devices, enhancing system rigidity and machining stability.

[0043] In this embodiment, a lead screw limiting head 221 is installed on the outer end of the lead screw 22, and a bolt is installed on the lead screw limiting head 221. The lead screw limiting head 221 is installed on the outer end of the lead screw 22 by the bolt.

[0044] Specifically, the lead screw 22 is used to convert the rotational motion provided by the servo motor 2 into precise linear motion through the lead screw nut pair and the upper and lower movable blocks 33, thereby driving the auxiliary plug 4 to move up and down.

[0045] The lead screw limit head 221 is a mechanical limit device installed on the outer end of the lead screw 22. It is fixed by bolts and its position is adjustable. When the upper and lower movable blocks 33 move to the end of the lead screw, they will hit the limit head, which will act as a physical stop to prevent overtravel damage to the equipment, such as a collision. It is an important safety protection component.

[0046] Working method: In use, the slotting head 1 is vertically mounted on the slotting bed by multiple head positioning pins 11. The servo motor 2 drives the lead screw 22 to rotate, and the lead screw 22 drives the upper and lower movable blocks 33 to move up and down. The upper and lower movable blocks 33 drive the moving rail 23 to move up and down. The moving rail 23 slides up and down on the outside of the two movable rails 3 through two movable rail sliders 31. The moving rail 23 drives the auxiliary plug 4 to adjust up and down. The two rigid rails 5 are set to ensure the overall stability. The combination of soft and hard guide rails provides high rigidity and can achieve a high surface finish of the product. All structural shapes, sizes and materials of Embodiment 1 are included in this application. In order to meet specific usage conditions, they can be selected and adjusted. The attached drawings are schematic structural diagrams. The actual dimensions can be adjusted appropriately.

[0047] The above description is only a preferred embodiment of this practice, but the scope of protection of this embodiment is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in this embodiment, based on the technical solution and the inventive concept of this embodiment, should be covered within the scope of protection of this embodiment.

Claims

1. A slotter-post construction comprising a slotter head (1), characterized in that, The top of the slotting head (1) is symmetrically fitted with two movable linear guides (3) by screws. The top of the two movable linear guides (3) is slidably fitted with the same moving linear guide (23). The top of the moving linear guide (23) is fitted with an auxiliary plug (4). The inside of the slotting head (1) is fitted with a lead screw (22) through a bearing. The lead screw (22) is externally threaded with upper and lower movable blocks (33). The upper and lower movable blocks (33) are fixedly installed with the bottom of the moving linear guide (23). The outside of the lead screw (22) is fitted with a power mechanism.

2. A vertical column structure for a slotter as claimed in claim 1, wherein, The power mechanism includes a servo motor (2) and an electromagnetic clutch (21). The output shaft of the servo motor (2) is connected to the lead screw (22) through the electromagnetic clutch (21).

3. The bed support column structure according to claim 1, characterized in that, Two movable rail sliders (31) are fixedly installed at the bottom of the movable rail (23). The bottom of each movable rail slider (31) is provided with a movable rail groove (32), and the two movable rail grooves (32) are slidably connected to the outer side of the two movable rails (3).

4. A vertical column structure for a slotter as claimed in claim 1, wherein, The top of the slotting head (1) is fitted with rigid linear guides (5) by screws on both sides, and the top of the two rigid linear guides (5) is provided with multiple positioning grooves (51).

5. The structure of the vertical column of a slotter as claimed in claim 1 wherein, The lead screw (22) is equipped with a lead screw limit head (221) at its outer end. The lead screw limit head (221) is equipped with a bolt and is installed at the outer end of the lead screw (22) by bolt.

6. A vertical column structure for a slotter as claimed in claim 1, wherein, Multiple head positioning pins (11) are installed on the outside of the slotting head (1).

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