A guide rail assembly of a numerical control machine tool

By using modular disassembly and fixing mechanisms, the wear problem of CNC machine tool guide rail components is solved, enabling convenient disassembly and installation of the guide rails, reducing maintenance costs and improving connection stability.

CN224373377UActive Publication Date: 2026-06-19SHENZHEN JIANYUAN INTELLIGENT EQUIP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN JIANYUAN INTELLIGENT EQUIP CO LTD
Filing Date
2025-06-19
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing CNC machine tool guide rail assemblies wear out after prolonged use, requiring frequent repairs or replacements, and their integrated structure results in high replacement costs.

Method used

The system employs a modular disassembly and fixing mechanism, allowing for the removal and installation of the guide rail by pulling the handle and turning the knob, thus avoiding the need for complete replacement. The combination of a return spring and a two-way screw enhances connection stability.

Benefits of technology

Modular replacement of guide rails has been achieved, reducing maintenance costs and improving connection stability and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of guide rail assembly of numerical control machine tool, it is related to numerical control machine tool field, including mounting plate, the top of mounting plate is symmetrically penetrated and is equipped with connecting hole, the top of connecting hole is connected with mounting block, the top of mounting block is connected with several guide rails, the inside of mounting block is connected with dismounting mechanism, the front side of mounting block is connected with fixed mechanism, the top of mounting block is connected with the guide rail by the dismounting mechanism;The application is provided with dismounting mechanism, when disassembling, by pulling handle, make reset spring compression, simultaneously make that plug rod moves out in insertion hole, pull guide rail, the guide rail of wear is disassembled, after installing new guide rail, loosen handle, by the reset of reset spring, make moving plate drive plug rod reset, so that plug rod is inlaid in insertion hole, complete installation, so that guide rail is modularized, avoid needing to replace as a whole when replacing, avoid waste, reduce cost.
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Description

Technical Field

[0001] This utility model is specifically a guide rail assembly for a CNC machine tool, belonging to the field of CNC machine tool technology. Background Technology

[0002] A CNC machine tool is an automated machine tool equipped with a program control system. After processing, the CNC device sends various control signals to control the machine tool's movements, automatically machining parts according to the shape and size required by the drawings. CNC machine tools effectively solve the problem of machining complex, precise, small-batch, and multi-variety parts. It is a flexible and high-efficiency automated machine tool, representing the development direction of modern machine tool control technology. It is a typical mechatronics product. The guide rail is a very important component in the machine tool, and the machining accuracy of the machine tool is directly related to the accuracy of the guide rail.

[0003] Chinese patent CN221454975U discloses a CNC machine tool guide rail assembly, including multiple guide rails. These guide rails are spliced ​​and installed using a disassembly and installation mechanism. This mechanism includes a drive assembly, multiple moving components, and a docking assembly. The docking assembly is used to splice and install two adjacent guide rails. By setting up this disassembly and installation mechanism, an electric push rod pushes a connecting rod via a push plate. The connecting rod drives multiple moving parts to move simultaneously along the trajectory of a strip groove, pushing and spreading the multiple guide rails outwards synchronously. This allows a rod on one guide rail to be pulled out of a slot on another guide rail, enabling the disassembly and separation of two adjacent guide rails in the spliced ​​state. This allows for the disassembly and replacement of a single, worn guide rail, avoiding the need to disassemble and replace an entire guide rail assembly.

[0004] As can be seen from the above patents, the current guide rail assembly will wear out during the operation of the slide and the guide rail, and the guide rail needs to be repaired or replaced frequently. Since the guide rail is an integral structure, the whole thing needs to be replaced when the guide rail is replaced, which is wasteful and costly. Utility Model Content

[0005] The purpose of this utility model is to provide a guide rail assembly for CNC machine tools to solve the above-mentioned problems. As can be seen from the above-mentioned patent, the current guide rail assembly will wear out after long-term use, and the guide rail needs to be frequently repaired or replaced. Since the guide rail is an integral structure, the entire guide rail needs to be replaced when replacing the guide rail, which is wasteful and costly.

[0006] This utility model is achieved through the following technical solution: a guide rail assembly for a CNC machine tool, including a mounting plate, a connecting hole symmetrically opened through the top of the mounting plate, a mounting block connected to the top of the connecting hole, a plurality of guide rails connected to the top of the mounting block, a disassembly and assembly mechanism connected inside the mounting block, a fixing mechanism connected to the front side of the mounting block, and the guide rails connected to the top of the mounting block through the disassembly and assembly mechanism.

[0007] Preferably, the disassembly and assembly mechanism includes mounting cavities evenly spaced within the mounting block. A slide rod is fixed between the two sides of the inner cavity of the mounting cavity. A movable plate slides symmetrically on the outer side of the slide rod. An insertion rod is fixed on one side of the movable plate. A deflection plate rotates inside the movable plate. A pull rod slides through the center of the front side of the mounting cavity. A pull plate is fixed at one end of the pull rod. A connecting seat is fixed at the other end of the pull rod. Insertion plates are symmetrically fixed at the bottom of the guide rail. An insertion hole is formed through one side of the insertion plate.

[0008] Preferably, the disassembly and assembly mechanism further includes a return spring fixed between the opposite sides of the two movable plates, a handle fixed in the middle of one side of the pull plate, and slots symmetrically provided through the top of the mounting cavity.

[0009] Preferably, one end of the deflection plate rotates inside the connecting seat, and when the deflection plate deflects, the moving plate moves, and the return spring is sleeved on the outside of the slide rod.

[0010] Preferably, the fixing mechanism includes a fixing plate fixed to the outside of the mounting block, and the fixing plate is located on both sides of the pull plate. A bidirectional screw is rotatably driven through the top of the opposite sides of the two fixing plates, and a limit rod is fixed to the bottom of the opposite sides of the two fixing plates. A knob is fixed to one end of the bidirectional screw, and a connecting plate is symmetrically screwed to the outside of the bidirectional screw. A fixing rod is fixed to the middle of one side of the connecting plate, and a fixing hole is opened through the middle of one side of the pull plate.

[0011] Preferably, the fixing mechanism further includes a screw hole on one side of the fixing plate, and a through hole on one side of the knob, with a bolt connected inside the through hole.

[0012] Preferably, the bolt is screwed into the inside of the through hole to facilitate fixing the knob. The outer side of the knob is provided with anti-slip texture to prevent slippage. The connecting plate slides outside the limiting rod to limit the connecting plate, so that the connecting plate slides outside the limiting rod.

[0013] This utility model provides a guide rail assembly for a CNC machine tool, which has the following beneficial effects:

[0014] This application, through the design of the disassembly and assembly mechanism, allows for disassembly by pulling the handle, which moves the pull plate, thereby moving the pull rod, which in turn moves the connecting seat, causing the deflection plate to deflect. This brings the moving plates closer together, compressing the return spring and simultaneously moving the insertion rod out of the insertion hole. Pulling the guide rail removes the worn guide rail, and then installing the new guide rail allows the insertion plate to be inserted into the slot. Loosening the handle and releasing the return spring resets the moving plate, causing the insertion rod to return to its original position, thus embedding the insertion rod into the insertion hole and completing the installation. This modularizes the guide rail, avoiding the need for complete replacement during replacement, preventing waste, and reducing costs.

[0015] This application, through the setting of a fixing mechanism, rotates the knob to drive the bidirectional screw to rotate, thereby causing the connecting plates to move closer to each other outside the limiting rod, and causing the fixing rods to move closer to each other, so that the fixing rods are embedded in the fixing holes, thereby fixing the pull plate and preventing the pull plate from moving, thus ensuring the stability of the guide rail connection, preventing loosening, improving the stability of the connection, and improving safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the mounting cavity of this utility model;

[0018] Figure 3 An enlarged structural view of the socket of this utility model is provided;

[0019] Figure 4 This is a schematic diagram of the fixing mechanism structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the bolt installation structure of this utility model.

[0021] [Explanation of Key Component Symbols]

[0022] 1. Mounting plate;

[0023] 2. Connecting holes;

[0024] 3. Installation block;

[0025] 4. Guide rail;

[0026] 5. Assembly / disassembly mechanism; 501. Mounting cavity; 502. Slide rod; 503. Moving plate; 504. Return spring; 505. Insert rod; 506. Deflection plate; 507. Pull rod; 508. Pull plate; 509. Connecting seat; 510. Handle; 511. Slot; 512. Insert plate; 513. Insertion hole;

[0027] 6. Fixing mechanism; 601. Fixing plate; 602. Two-way screw; 603. Limiting rod; 604. Knob; 605. Screw hole; 606. Through hole; 607. Connecting plate; 608. Fixing rod; 609. Fixing hole; 610. Bolt. Detailed Implementation

[0028] This utility model embodiment provides a guide rail assembly for a CNC machine tool.

[0029] Please see Figure 1 The device includes a mounting plate 1, with symmetrical through-holes 2 on the top of the mounting plate 1. A mounting block 3 is connected to the top of the through-holes 2. Several guide rails 4 are connected to the top of the mounting block 3. A disassembly and assembly mechanism 5 is connected inside the mounting block 3. A fixing mechanism 6 is connected to the front side of the mounting block 3. The guide rails 4 are connected to the top of the mounting block 3 through the disassembly and assembly mechanism 5.

[0030] Please refer to it again. Figure 2 and Figure 3 The disassembly and assembly mechanism 5 includes mounting cavities 501 evenly distributed within the mounting block 3. A slide rod 502 is fixed between the two sides of the inner cavity of the mounting cavity 501. A movable plate 503 slides symmetrically on the outer side of the slide rod 502. An insertion rod 505 is fixed to one side of the movable plate 503. A deflection plate 506 rotates inside the movable plate 503. A pull rod 507 slides through the center of the front side of the mounting cavity 501. A pull plate 508 is fixed to one end of the pull rod 507, and a connecting seat 509 is fixed to the other end of the pull rod 507. Insertion plates 512 are symmetrically fixed to the bottom of the guide rail 4. An insertion hole 513 is provided through one side of the insertion plate 512. The disassembly and assembly mechanism 5 also includes a return spring 504 fixed between the opposite sides of the two movable plates 503. A handle 510 is fixed to the center of one side of the pull plate 508. Slots 511 are symmetrically provided through the top of the mounting cavity 501. One side of the deflection plate 506... The end rotates inside the connecting seat 509, and the return spring 504 is sleeved on the outside of the slide rod 502. Through the disassembly and assembly mechanism 5, during disassembly, pulling the handle 510 moves the pull plate 508, which in turn moves the pull rod 507, causing the connecting seat 509 to move and the deflection plate 506 to deflect. This causes the moving plates 503 to move closer together, compressing the return spring 504 and simultaneously moving the insertion rod 505 out of the insertion hole 513. Pulling the guide rail 4 removes the worn guide rail 4, and then installing the new guide rail 4 allows the insertion plate 512 to be inserted into the slot 511. Loosening the handle 510 allows the return spring 504 to reset, causing the moving plate 503 to move the insertion rod 505 back to its original position, thus embedding the insertion rod 505 into the insertion hole 513, completing the installation. This modularizes the guide rail 4, avoiding the need for complete replacement during replacement, preventing waste, and reducing costs.

[0031] Please refer to it again. Figure 4 and Figure 5The fixing mechanism 6 includes a fixing plate 601 fixed to the outside of the mounting block 3, and the fixing plate 601 is located on both sides of the pull plate 508. A bidirectional screw 602 is rotatably driven through the top of the opposite sides of the two fixing plates 601, and a limit rod 603 is fixed to the bottom of the opposite sides of the two fixing plates 601. A knob 604 is fixed to one end of the bidirectional screw 602. A connecting plate 607 is symmetrically screwed to the outside of the bidirectional screw 602. A fixing rod 608 is fixed to the middle of one side of the connecting plate 607, and a fixing hole 609 is opened through the middle of one side of the pull plate 508. The fixing mechanism 6 also includes a screw hole 605 opened on one side of a fixing plate 601, and a screw hole 609 opened through the middle of one side of a knob 604. A through hole 606 is provided, and a bolt 610 is connected inside the through hole 606. The bolt 610 is screwed into the inside of the through hole 606. The outer side of the knob 604 is provided with anti-slip texture. The connecting plate 607 slides outside the limiting rod 603. With the setting of the fixing mechanism 6, rotating the knob 604 drives the bidirectional screw 602 to rotate, thereby making the connecting plates 607 move closer to each other outside the limiting rod 603, and making the fixing rods 608 move closer to each other, so that the fixing rods 608 are embedded in the fixing hole 609, thereby fixing the pull plate 508 and preventing the pull plate 508 from moving, thus ensuring the stability of the guide rail 4 connection, preventing loosening, improving the stability of the connection, and improving safety.

[0032] When using this utility model:

[0033] Working principle: When the guide rail 4 wears out, pulling the handle 510 moves the pull plate 508, which in turn moves the pull rod 507, causing the connecting seat 509 to move and the deflection plate 506 to deflect. This causes the moving plates 503 to move closer together, compressing the return spring 504. Simultaneously, the insertion rod 505 moves out of the insertion hole 513. Pulling the guide rail 4 removes the worn guide rail 4, and then a new guide rail 4 is installed, allowing the insertion plate 512 to be inserted into the slot 511. Loosening the handle 510, the return spring 504 returns to its original position. Position the movable plate 503 to drive the insertion rod 505 to reset, so that the insertion rod 505 is embedded in the insertion hole 513 to complete the installation. After the guide rail 4 is installed, turn the knob 604 to drive the bidirectional screw 602 to rotate, so that the connecting plate 607 moves closer to each other outside the limit rod 603, so that the fixing rod 608 moves closer to each other, so that the fixing rod 608 is embedded in the fixing hole 609, thereby fixing the pull plate 508. Then, the bolt 610 is screwed into the screw hole 605 to fix the knob 604.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A guide rail assembly for a CNC machine tool, comprising a mounting plate (1), wherein the top of the mounting plate (1) is symmetrically provided with connecting holes (2), the top of the connecting holes (2) is connected to a mounting block (3), and the top of the mounting block (3) is connected to a plurality of guide rails (4), characterized in that: The mounting block (3) is internally connected to a disassembly and assembly mechanism (5), and the front side of the mounting block (3) is connected to a fixing mechanism (6). The guide rail (4) is connected to the top of the mounting block (3) through the disassembly and assembly mechanism (5).

2. A guide rail assembly for a numerically controlled machine tool according to claim 1, characterized in that: The disassembly and assembly mechanism (5) includes an installation cavity (501) evenly opened inside the installation block (3). A slide rod (502) is fixed between the two sides of the inner cavity of the installation cavity (501). A moving plate (503) slides symmetrically on the outer side of the slide rod (502). A plug rod (505) is fixed on one side of the moving plate (503). A deflection plate (506) rotates inside the moving plate (503). A pull rod (507) slides through the middle of the front side of the installation cavity (501). A pull plate (508) is fixed at one end of the pull rod (507). A connecting seat (509) is fixed at the other end of the pull rod (507). A plug plate (512) is symmetrically fixed at the bottom of the guide rail (4). A plug hole (513) is opened through one side of the plug plate (512).

3. A guide rail assembly for a numerically controlled machine tool according to claim 2, characterized in that: The disassembly and assembly mechanism (5) also includes a return spring (504) fixed between the opposite sides of the two movable plates (503), a handle (510) fixed in the middle of one side of the pull plate (508), and slots (511) symmetrically opened through the top of the mounting cavity (501).

4. A guide rail assembly for a numerically controlled machine tool according to claim 3, wherein: One end of the deflection plate (506) rotates inside the connecting seat (509), and the return spring (504) is sleeved on the outside of the slide rod (502).

5. A guide rail assembly for a numerically controlled machine tool according to claim 2, wherein: The fixing mechanism (6) includes a fixing plate (601) fixed to the outside of the mounting block (3), and the fixing plate (601) is located on both sides of the pull plate (508). A bidirectional screw (602) is rotatably inserted through the top of the opposite sides of the two fixing plates (601). A limit rod (603) is fixed to the bottom of the opposite sides of the two fixing plates (601). A knob (604) is fixed to one end of the bidirectional screw (602). A connecting plate (607) is symmetrically screwed to the outside of the bidirectional screw (602). A fixing rod (608) is fixed to the middle of one side of the connecting plate (607). A fixing hole (609) is opened through the middle of one side of the pull plate (508).

6. The guide rail assembly for a CNC machine tool according to claim 5, characterized in that: The fixing mechanism (6) also includes a screw hole (605) on one side of a fixing plate (601), and a through hole (606) through one side of a knob (604), with a bolt (610) connected inside the through hole (606).

7. A guideway assembly for a numerically controlled machine tool according to claim 6, wherein: The bolt (610) is screwed into the inside of the through hole (606), the knob (604) is provided with anti-slip texture on the outside, and the connecting plate (607) slides on the outside of the limiting rod (603).