A rotating detection mechanism

Abstract

This invention provides a rotating detection mechanism, belonging to the field of mechanical technology. It solves the problem of poor reliability in existing probe mechanisms. The rotating detection mechanism includes a base and a horizontally positioned, elongated swing arm. A probe is vertically fixed below one end of the swing arm. The base has a drive mechanism for connecting the other end of the swing arm and driving it to swing horizontally. A limit block is vertically fixed on the base. The swing arm has two connecting blocks, which are respectively located on both sides of the limit block, and the limit block and connecting blocks are distributed around the rotation axis of the swing arm. Each connecting block has a buffer component fixed on it. The limit block includes two sides distributed around the aforementioned rotation axis, and the two buffer components can press against the two side surfaces respectively as the swing arm swings. This rotating detection mechanism has high reliability.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a detection mechanism, particularly a rotary detection mechanism. Background Technology

[0002] Machine tool probes are the core sensing components of CNC machine tools, used to achieve functions such as workpiece positioning, dimensional detection, and tool compensation, and directly determine machining accuracy and efficiency.

[0003] Existing probe structures, such as the probe mechanism disclosed in the Chinese Patent Database (application number: 201120155472.6), include a probe lifting motor, a probe swing motor, a bearing, a guide shaft, a rotation sensor, and a lifting sensor, all fixedly connected to a probe mounting frame. The probe mounting frame is fixedly connected to a base plate. A synchronous pulley is fixedly connected to the probe lifting motor and the probe swing motor. A driven wheel is fixedly connected to the bearing. The guide shaft is rotatably connected to a linear bearing. A synchronous belt is wound around the synchronous pulley and the synchronous pulley. A connecting plate is fixedly connected to the synchronous belt and the connecting bearing mounting plate. The synchronous belt is wound around the synchronous pulley and the driven wheel. A splined shaft is fixedly connected to the driven wheel and the bearing mounting plate. The bearing mounting plate is fixedly connected to the linear bearing. The guide shaft is rotatably connected to the linear bearing. The probe is fixedly connected to a swing arm. The swing arm is fixedly connected to the splined shaft. The encoder is fixedly connected to the driven wheel.

[0004] In the aforementioned probe mechanism, the swing angle of the swing arm is entirely controlled by electronic control, which poses a risk of failure and results in poor reliability. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a reliable rotating detection mechanism.

[0006] The objective of this utility model can be achieved through the following technical solution: A rotating detection mechanism includes a base and a horizontally arranged, elongated swing arm. A probe is vertically fixed below one end of the swing arm. The base is provided with a driving mechanism for connecting the other end of the swing arm and driving the swing arm to swing horizontally. The mechanism is characterized in that a limit block is vertically fixed on the base, and the swing arm has two connecting blocks. The two connecting blocks are respectively arranged on both sides of the limit block, and the limit block and the connecting blocks are distributed around the rotation axis of the swing arm. A buffer component is fixed on each of the two connecting blocks. The limit block includes two sides distributed around the aforementioned rotation axis, and the two buffer components can press against the two side surfaces respectively as the swing arm swings.

[0007] With the cooperation of buffer components and limit blocks, the rotation angle of the swing arm is mechanically limited to avoid problems such as interference and overload caused by excessive rotation of the swing arm, resulting in high reliability. At the same time, the buffer components can reduce stress and noise during collisions, effectively reducing stress damage to the probe, thereby further enhancing the operational reliability of this detection mechanism.

[0008] In the aforementioned rotary detection mechanism, the buffer component is a hydraulic buffer. The hydraulic buffer is strip-shaped and horizontally arranged, and includes a piston rod for contacting the aforementioned side. The hydraulic buffer provides linear deceleration and no rebound, further preventing damage to the probe from impacts.

[0009] As an alternative, in the aforementioned rotating detection mechanism, the buffer component is a rubber block fixed to the connecting block.

[0010] In the aforementioned rotating detection mechanism, the drive mechanism includes a power source and a vertically arranged rotating shaft. The power source is mounted on a base, and the rotating shaft is rotatably mounted on the base. The lower end of the rotating shaft is fixedly connected to a swing arm, and the power source is connected to the upper end of the rotating shaft to drive its rotation. This design enhances the stability of the swing arm's swing.

[0011] In the aforementioned rotating detection mechanism, the base has a vertically penetrating mounting hole, through which the rotating shaft passes, forming a rotational fit between the shaft and the wall of the mounting hole. This design shortens the distance between components, making the structure more compact and reducing space requirements.

[0012] In the aforementioned rotary detection mechanism, both ends of the rotating shaft are fitted with the mounting hole wall via rolling bearings.

[0013] In the aforementioned rotary detection mechanism, the power source is a rotary hydraulic cylinder, and the main shaft of the rotary hydraulic cylinder is connected to the upper end of the rotating shaft.

[0014] In the aforementioned rotary detection mechanism, the upper end of the rotating shaft is axially provided with a connection hole that matches the main shaft, and the lower end of the main shaft is inserted into the connection hole, with the two connected by a flat key or spline.

[0015] Compared with existing technologies, this rotating detection mechanism has the following advantages:

[0016] 1. With the cooperation of buffer components and limit blocks, the rotation angle of the swing arm is mechanically limited to avoid interference, overload and other problems caused by excessive rotation of the swing arm, which is highly reliable. At the same time, the buffer components can reduce stress and noise during collision, effectively reduce stress damage to the probe, and further enhance the operational reliability of this detection mechanism.

[0017] 2. The hydraulic damper provides linear deceleration and no rebound, further preventing damage to the probe from collisions. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the rotating detection mechanism.

[0019] Figure 2This is a three-dimensional schematic diagram of the rotating detection mechanism in another direction.

[0020] Figure 3 This is a cross-sectional schematic diagram of the rotating detection mechanism.

[0021] In the figure, 1 is the base; 1a is the mounting hole; 2 is the swing arm; 3 is the probe; 4 is the limit block; 4a is the side; 5 is the connecting block; 6 is the hydraulic buffer; 6a is the piston rod; 7 is the power source; 7a is the main shaft; 8 is the rotating shaft; 8a is the limit seat; 9 is the rolling bearing; and 10 is the annular flange. Detailed Implementation

[0022] 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.

[0023] Example 1: As Figure 1 As shown, this rotating detection mechanism includes a base 1 and a horizontally arranged, elongated swing arm 2.

[0024] in,

[0025] A probe 3 is vertically fixed at the lower end of one end of the swing arm 2, and in the actual product, the probe 3 is fixed to the swing arm 2 by screws.

[0026] like Figure 1 and Figure 2 As shown, the base 1 is equipped with a drive mechanism for connecting the other end of the swing arm 2 and driving the swing arm 2 to swing horizontally. A limit block 4 is vertically fixed on the base 1, and the swing arm 2 has two connecting blocks 5, which are respectively disposed on both sides of the limit block 4, and the limit block 4 and the connecting blocks 5 are distributed around the rotation axis of the swing arm 2. Buffer components are fixed on both connecting blocks 5. The limit block 4 includes two side surfaces 4a distributed around the aforementioned rotation axis, and the two buffer components can press against the two side surfaces 4a respectively as the swing arm 2 swings.

[0027] With the cooperation of the buffer component and the limiting block 4, the rotation angle of the swing arm 2 is mechanically limited to avoid interference, overload and other problems caused by excessive rotation of the swing arm 2. The reliability is high. At the same time, the buffer component can reduce stress and noise during collision and effectively reduce stress damage to the probe 3, so as to further enhance the operational reliability of this detection mechanism.

[0028] In this embodiment,

[0029] The preferred limiting block 4 is welded and fixed to the base 1; the connecting block 5 is fixed to the swing arm 2 by screws.

[0030] The buffer component is a hydraulic buffer 6, which is an existing product and commercially available. This application uses the Airtac ACA2020-2 hydraulic buffer 6. The hydraulic buffer 6 is strip-shaped and horizontally arranged, and includes a housing and a piston rod 6a for contacting the aforementioned side 4a. The hydraulic buffer 6 provides linear deceleration and no rebound, further preventing damage to the probe 3 from impacts.

[0031] The hydraulic damper 6 is installed as follows: the outer wall of the housing is provided with external threads, the connecting block 5 is provided with a through hole for the housing to pass through, two nuts are screwed on the housing, the connecting block 5 is located between the corresponding two nuts, and both nuts are pressed on the corresponding connecting block 5, so as to stably install the hydraulic damper 6 on the swing arm 2.

[0032] like Figure 1 and Figure 3 As shown, the driving mechanism includes a power source 7 and a vertically arranged rotating shaft 8. The power source 7 is mounted on the base 1, and the rotating shaft 8 is rotatably mounted on the base 1. The lower end of the rotating shaft 8 is fixedly connected to the swing arm 2, and the power source 7 is connected to the upper end of the rotating shaft 8 to drive the rotating shaft 8 to rotate. This design enhances the swing stability of the swing arm 2. Further, the base 1 has a vertically penetrating mounting hole 1a, in which the rotating shaft 8 passes, and a rotational fit is formed between the rotating shaft 8 and the wall of the mounting hole 1a. This design shortens the distance between components, making the structure more compact and reducing space occupation.

[0033] in,

[0034] The connection between the rotating shaft 8 and the swing arm 2 is as follows: a positioning hole that matches the lower end of the rotating shaft 8 is vertically inserted through the swing arm 2, the lower end of the rotating shaft 8 is inserted into the positioning hole, and the rotating shaft 8 and the swing arm 2 are fixedly connected by welding.

[0035] like Figure 3 As shown, both ends of the rotating shaft 8 are rotatedly fitted with the walls of the mounting holes 1a via rolling bearings 9. Specifically, the rolling bearings 9 include inner and outer rings, which are fixed to the rotating shaft 8 and the walls of the mounting holes 1a respectively by interference fit. Further, an annular limiting seat 8a is formed on the outer wall of the rotating shaft 8, and the limiting seat 8a is coaxially arranged with the rotating shaft 8. The ends of the two inner rings that are close together press against the top and bottom walls of the limiting seat 8a, respectively. Annular flanges 10 are fixed on the bottom and top walls of the base 1, and the annular flanges 10 are coaxially arranged with the mounting holes 1a. The ends of the two outer rings that are far apart are pressed against the two annular flanges 10, thereby axially stabilizing and limiting the rolling bearings 9 and improving the operational stability of the rotating shaft 8.

[0036] The power source 7 is a rotary hydraulic cylinder, which is fixed to the upper annular flange 10. The rotary hydraulic cylinder includes a vertically arranged main shaft 7a, which is connected to the upper end of a rotating shaft 8. Preferably, the upper end of the rotating shaft 8 has an axially formed connection hole that matches the main shaft 7a, and the lower end of the main shaft 7a is inserted into the connection hole, with the two connected by a flat key or spline.

[0037] Example 2: The structure and principle of Example 2 are basically the same as those of Example 1. The difference is that the buffer component is a rubber block fixed on the connecting block 5.

[0038] 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 rotating detection mechanism, comprising a base (1) and a horizontally arranged, elongated swing arm (2), wherein a probe (3) is vertically fixed below one end of the swing arm (2), and the base (1) is provided with a driving mechanism for connecting the other end of the swing arm (2) and driving the swing arm (2) to swing horizontally, characterized in that, A limiting block (4) is vertically fixed on the base (1), and two connecting blocks (5) are provided on the swing arm (2). The two connecting blocks (5) are respectively set on both sides of the limiting block (4), and the limiting block (4) and the connecting block (5) are distributed around the rotation axis of the swing arm (2). Both connecting blocks (5) are fixed with buffer components. The limiting block (4) includes two side surfaces (4a) distributed around the above-mentioned rotation axis, and the two buffer components can press against the two side surfaces (4a) respectively as the swing arm (2) swings.

2. The rotation detection mechanism according to claim 1, wherein The type of buffer component mentioned above is a hydraulic buffer (6), which is strip-shaped and horizontally arranged, and includes a piston rod (6a) for contacting the side (4a) mentioned above.

3. The rotation detection mechanism of claim 1, wherein The buffer component is a rubber block fixed on the connecting block (5).

4. The rotation detection mechanism of claim 1, wherein The drive mechanism includes a power source (7) and a vertically arranged rotating shaft (8). The power source (7) is mounted on the base (1), and the rotating shaft (8) is rotatably mounted on the base (1). The lower end of the rotating shaft (8) is fixedly connected to the swing arm (2), and the power source (7) is connected to the upper end of the rotating shaft (8) to drive the rotating shaft (8) to rotate.

5. The rotation detection mechanism of claim 4, wherein, The base (1) has a vertical through mounting hole (1a), and the rotating shaft (8) passes through the mounting hole (1a), and the rotating shaft (8) and the wall of the mounting hole (1a) form a rotational fit.

6. The rotating detection mechanism according to claim 5, characterized in that, Both ends of the rotating shaft (8) are rotated with the mounting hole (1a) wall through rolling bearings (9).

7. The rotating detection mechanism according to claim 4, characterized in that, The power source (7) is a rotary cylinder, and the main shaft (7a) of the rotary cylinder is connected to the upper end of the rotating shaft (8).

8. The rotating detection mechanism according to claim 7, characterized in that, The upper end of the rotating shaft (8) is axially provided with a connecting hole that matches the main shaft (7a). The lower end of the main shaft (7a) is inserted into the connecting hole and the two are connected by a flat key or spline.

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