Machine tool guard door auxiliary guide device

Abstract

The utility model provides a machine tool protective door auxiliary guide device, include: guide rail, install in the top of machine tool, gyro wheel, horizontal arrangement, distribute in the both sides of guide rail length direction, and abut guide rail, fixed plate, locate in the upside of gyro wheel with gyro wheel's pivot fixedly connected, long round hole, set up in the top of protective door, its length direction is perpendicular with guide rail, bolt passes through long round hole with fixed plate fixed connection. The long round hole perpendicular to the direction of guide rail is provided on the protective door, allows when installing to carry out horizontal fine adjustment, compensates the position deviation caused by manufacturing tolerance or structure deformation, ensures the accurate positioning and reliable connection between protective door and fixed plate.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, specifically an auxiliary guide device for machine tool protective doors. Background Technology

[0002] As one of the core equipment in modern manufacturing, CNC machine tools directly affect machining quality and production efficiency through their operational accuracy and stability. To ensure the safe operation of machine tools under high-speed and high-load conditions, protective doors are usually installed around the machine tool to achieve fully enclosed operation and effectively isolate external interference such as chips, coolant, and noise. Simultaneously, to facilitate loading and unloading operations using lifting equipment, the protective door must allow the top and part of the machine tool to be open when opened. To meet these requirements, a common protective door design is an inverted L-shaped structure. Its lower part is usually connected to a guide rail slider mechanism, bearing the weight of the door and the main force, while the upper part is equipped with an auxiliary guiding device to enhance overall stability.

[0003] However, these inverted L-shaped protective doors are mostly manufactured using profile splicing. Due to the inherent asymmetry of the structure and the insufficient rigidity caused by the L-shaped cross-section, they are prone to deformation and displacement during installation and use, resulting in a significant positional error between the upper part of the protective door and the auxiliary guide device. This error affects the accurate positioning and reliable connection between the protective door and the machine tool body.

[0004] Therefore, how to overcome the installation errors caused by the structural instability of existing inverted L-shaped protective doors has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] To address the technical problems in the background art, this utility model discloses an auxiliary guide device for machine tool protective doors.

[0006] This utility model provides an auxiliary guide device for machine tool protective doors, comprising: Guide rails are mounted on the top of the machine tool; The rollers are arranged horizontally, distributed on both sides of the guide rail along its length, and abut against the guide rail. A fixing plate is located on the upper side of the roller and is fixedly connected to the roller's shaft; An elongated hole is located at the top of the protective door, with its length perpendicular to the guide rail. Bolts pass through the elongated hole and are fixedly connected to the fixing plate.

[0007] Furthermore, a shoulder is provided at the upper end of the pivot; The mounting plate is provided with positioning holes; The upper end of the shaft is inserted into the positioning hole, and the shoulder abuts against the lower end face of the fixing plate.

[0008] Furthermore, the roller is designed as a bearing; The fixing bolt passes upward through the bearing and is threaded to the lower end of the shaft.

[0009] Furthermore, there are four elongated holes on the fixing plate, and their positions form a rectangle; The rollers connected to the fixed plate are arranged symmetrically as two, located between the elongated holes.

[0010] Furthermore, the fixing plates are arranged in two symmetrical pieces, located at both ends of the protective door's moving direction.

[0011] The beneficial effects of this utility model are: 1. The protective door is equipped with an elongated hole perpendicular to the guide rail direction, which allows for lateral fine-tuning during installation, compensating for positional deviations caused by manufacturing tolerances or structural deformation, and ensuring accurate positioning and reliable connection between the protective door and the fixing plate.

[0012] 2. When adjusting the position of the rollers, only adjust the relative position between the fixed plate and the protective door. Keeping the relative position between the rollers and the fixed plate fixed not only makes the installation structure of the rollers stronger, but also keeps the distance between the rollers stable and does not change. The positional accuracy of the rollers relative to the guide rail is higher, which makes the guiding stability of the auxiliary guiding device higher and the movement of the protective door smoother.

[0013] 3. The horizontally arranged rollers abut against both sides of the top guide rail, forming a two-way constraint, which effectively limits the horizontal deviation of the protective door and enhances the guiding accuracy and overall stability of the door during movement. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the connection structure of the fixed plate, rollers and guide rail; Figure 4 yes Figure 3 Top view; Figure 5 yes Figure 4 Sectional view of BB; In the diagram: 1. Guide rail; 2. Roller; 3. Fixing plate; 4. Shaft; 5. Oblong hole; 6. Protective door; 7. Fixing bolt; 8. Washer; 31. Positioning hole; 41. Shoulder. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0017] like Figure 1-4 As shown, this utility model discloses an auxiliary guide device for a machine tool protective door, which is connected to the top of the protective door 6. The protective door 6 is inverted L-shaped, including a vertically extending vertical part and a horizontally extending transverse part connected to the upper end of the vertical part.

[0018] A horizontally arranged guide rail 1 is provided directly below the end of the transverse section, and the guide rail 1 is fixedly installed on the upper end of the machine tool frame. The guide rail 1 is rectangular, with its top and bottom sides horizontal and the other sides vertical.

[0019] This utility model includes a fixing plate 3 located directly above the guide rail 1. A roller 2, which is roll-connected to the guide rail 1, is mounted on the lower side of the fixing plate 3. Specifically, the end of the horizontal portion has an elongated hole 5, the length of which is perpendicular to the guide rail 1. A bolt passes through the elongated hole 5 and is threadedly connected to the fixing plate 3. Each fixing plate 3 has four elongated holes 5 arranged in a rectangular pattern. This arrangement not only improves the connection strength between the protective door 6 and the fixing plate 3 but also ensures a uniform pressure distribution between the protective door 6 and the fixing plate 3.

[0020] Roller 2 uses a bearing, which can be a deep groove ball bearing or a needle roller bearing. Roller 2 is horizontally arranged and installed at the lower end of a vertically arranged shaft 4. The lower end of the shaft 4 has a downwardly protruding connecting part with a smaller diameter. Roller 2 is fitted onto the connecting part by an interference fit, and the shaft 4 does not contact the outer ring of roller 2. The lower end of the connecting part has an axially extending threaded hole, and the lower end of the threaded hole has a coaxially arranged washer 8, which contacts the inner ring of roller 2. Fixing bolt 7 passes through washer 8 and is threadedly connected to the connecting part, thereby fixing roller 2 in place. Roller 2 abuts against both sides of the guide rail 1 along its length.

[0021] like Figure 5 As shown, the fixed plate 3 has two positioning holes 31 symmetrically arranged relative to the guide rail 1, and the upper end of the rotating shaft 4 is provided with a shoulder 41. The upper end of the rotating shaft 4 is inserted into the positioning hole 31, and the shoulder 41 abuts against the lower end face of the fixed plate 3, realizing the installation and positioning of the rotating shaft 4, and is fixed by welding. With this arrangement, the relative positional accuracy of the two rollers 2 is higher, and the clamping force of the rollers 2 on the guide rail 1 and the reaction force from the guide rail 1 can be transmitted through a stable and symmetrical support structure. This force flow distribution is more reasonable, avoiding local stress concentration, thereby enhancing the overall rigidity and deformation resistance of the entire auxiliary guiding device under stress, and ensuring the smooth operation of the protective door 6.

[0022] The fixing plates 3 are arranged in two symmetrical pieces, located at both ends of the moving direction of the protective door 6, in order to improve the stability of the installation structure in the lateral part.

[0023] Compared to existing technologies, the advantages of this embodiment are: 1. The protective door 6 is provided with an elongated hole 5 perpendicular to the direction of the guide rail 1, allowing for lateral fine-tuning during installation to compensate for positional deviations caused by manufacturing tolerances or structural deformation, ensuring accurate positioning and reliable connection between the protective door 6 and the fixing plate 3. 2. When adjusting the rollers 2, only the relative position of the fixing plate 3 and the protective door 6 is adjusted, keeping the positions of the rollers 2 and the fixing plate 3 fixed. This not only makes the installation structure of the rollers 2 stronger, but also keeps the distance between the two rollers 2 stable and unchanged. The positional accuracy of the rollers 2 relative to the guide rail 1 is higher, resulting in higher guiding stability of the auxiliary guiding device and smoother movement of the protective door 6. 3. By having the horizontally arranged rollers 2 abut against both sides of the top guide rail 1, a bidirectional constraint is formed, effectively limiting the horizontal offset of the protective door 6 and enhancing the guiding accuracy and overall stability of the door during movement.

[0024] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An auxiliary guide device for machine tool protective doors, characterized in that, include: Guide rail (1) is installed on the top of the machine tool; Rollers (2) are arranged horizontally, distributed on both sides of the guide rail (1) along its length, and abut against the guide rail (1). A fixing plate (3) is provided on the upper side of the roller (2) and is fixedly connected to the rotating shaft (4) of the roller (2); An elongated hole (5) is provided at the top of the protective door (6), and its length direction is perpendicular to the guide rail (1). A bolt passes through the elongated hole (5) and is fixedly connected to the fixing plate (3).

2. The auxiliary guide device for machine tool protective doors according to claim 1, characterized in that: The upper end of the rotating shaft (4) is provided with a shoulder (41). The fixing plate (3) is provided with positioning holes (31); The upper end of the rotating shaft (4) is inserted into the positioning hole (31), and the shoulder (41) abuts against the lower end face of the fixing plate (3).

3. The auxiliary guide device for a machine tool protective door according to claim 2, characterized in that: The roller (2) is configured as a bearing; The fixing bolt (7) passes upward through the bearing and is threaded to the lower end of the rotating shaft (4).

4. The auxiliary guide device for machine tool protective doors according to claim 1, characterized in that: The fixed plate (3) has four elongated holes (5), which are arranged in a rectangle. The rollers (2) connected to the fixed plate (3) are arranged symmetrically as two, located between the elongated holes (5).

5. The auxiliary guide device for a machine tool protective door according to claim 1, characterized in that: The fixing plate (3) is set as two symmetrically arranged pieces, located at both ends of the moving direction of the protective door.

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