An on-line inspection device for internal holes

Abstract

The utility model belongs to the inner hole detection technical field, especially point to an online detection device of inner hole, including setting below clamp subassembly and by power device drive along vertical movement's mounting seat, be equipped with cavity in the mounting seat, the cavity is along vertical slide and is equipped with connecting rod, be equipped with mounting boss on the connecting rod, be equipped with spring between mounting boss and cavity bottom surface, the connecting rod upper end protrudes the mounting seat and is connected with detection core rod, be equipped with the sensor of inductive mounting boss position on the mounting seat, when workpiece inner hole is not processed in place, power device drives the mounting seat and goes up, detection core rod upper end cannot enter workpiece inner hole, compression spring, mounting boss is in lower position, when workpiece inner hole is processed in place, power device drives the mounting seat and goes up, detection core rod upper end enters workpiece inner hole, mounting boss is in upper position. The utility model can be on -line detection, and it is convenient to process again, need not second time on -line.

Description

Technical fields:

[0001] This utility model belongs to the field of internal hole detection technology, and specifically refers to an online detection device for internal holes. Background technology:

[0002] Chinese utility model patent (publication number CN223084472U, application date 2024.09.20, publication date 2025.07.11) discloses a honing processing equipment for bushings, including a frame. The frame is provided with a loading station, a unloading station, multiple honing stations, and a feeding device for moving bushings from the previous station to the next station. Each honing station is provided with a clamping assembly for fixing the bushing and a honing device located above the clamping assembly. The feeding device includes a strip plate driven by a power device to complete a reciprocating motion of rising, translating, and falling. Multiple clamping assemblies are arranged on a straight line parallel to the length direction of the strip plate and located between the loading station and the unloading station. Multiple clamping devices for clamping bushings are spaced apart along the length direction of the strip plate.

[0003] The drawback of the above-mentioned processing equipment is that it can only inspect the inner hole of the workpiece after it is taken off the line. If the inner hole size is found to be too small, it needs to be re-processed. Utility Model Content:

[0004] The purpose of this invention is to provide an online inspection device for internal holes, which can perform online inspections, facilitates reprocessing, and eliminates the need for secondary online inspections.

[0005] This utility model is implemented as follows:

[0006] An online inspection device for internal holes includes a mounting base disposed below a fixture assembly and driven by a power unit to move vertically. The mounting base has a cavity, and a connecting rod slides vertically within the cavity. The connecting rod has a mounting boss, and a spring is provided between the mounting boss and the bottom surface of the cavity. The upper end of the connecting rod extends out of the mounting base and is connected to a detection mandrel. The mounting base is equipped with a sensor that senses the position of the mounting boss. When the workpiece's internal hole is not fully machined, the power unit drives the mounting base upwards, preventing the upper end of the detection mandrel from entering the workpiece's internal hole, compressing the spring, and placing the mounting boss in the lower position. When the workpiece's internal hole is fully machined, the power unit drives the mounting base upwards, allowing the upper end of the detection mandrel to enter the workpiece's internal hole, and placing the mounting boss in the upper position.

[0007] In the above-mentioned online detection device for internal holes, the upper end of the connecting rod is screwed to the lower end of the detection core rod.

[0008] In the above-mentioned online detection device for internal holes, the mounting base includes a connecting cap and a connecting seat located below the connecting cap. The connecting cap and the connecting seat together form the cavity. The connecting seat is connected to the power device. The side wall of the connecting cap is provided with a strip-shaped hole arranged vertically along the length direction. A mounting frame is provided outside the connecting cap, and the sensor is provided on the mounting frame.

[0009] In the above-mentioned online detection device for internal holes, the sensor is a proximity switch. The sensing head of the proximity switch extends into the cavity through a strip-shaped hole. When the mounting boss is in the lower position, the sensing head of the proximity switch does not contact the mounting boss; when the mounting boss is in the upper position, the sensing head of the proximity switch contacts the mounting boss.

[0010] In the above-mentioned online detection device for internal holes, the sensor may also be a pair of photoelectric switches arranged opposite each other.

[0011] In the above-mentioned online detection device for internal holes, the lower end of the connecting cap is provided with flange one, the upper end of the connecting seat is provided with flange two, the mounting bracket includes an upper plate, a lower plate, and a connecting plate connecting the upper plate and the lower plate, the connecting plate is provided with mounting holes for mounting the sensor, the mounting holes are elongated strips arranged vertically along the length direction, and the lower plate, flange one and flange two are fixedly connected by screws.

[0012] In the above-mentioned online detection device for internal holes, the power unit is a cylinder mounted in the base via a bracket, the piston rod of the cylinder is connected to the mounting base, a platform is provided above the base, and the clamp assembly is set on the platform.

[0013] In the above-mentioned online detection device for internal holes, the power unit can also be an electric cylinder or a linear motor.

[0014] In the above-mentioned online inspection device for internal holes, the platform is provided with multiple fixture assemblies, each fixture assembly is provided with the online inspection device below it, and each fixture assembly is provided with a processing device for machining the internal hole of the workpiece above it. Each processing device is driven to move vertically by a corresponding drive device.

[0015] In the above-mentioned online detection device for internal holes, the driving device is a combination of a motor and a ball screw, a linear motor, or a linear module.

[0016] The above-mentioned online detection device for internal holes also includes a controller, and the cylinder, sensor, processing device and drive device are electrically connected to the controller.

[0017] In the above-mentioned online inspection device for internal holes, the fixture assembly includes a fixture base and an elastic sleeve disposed in the fixture base. The elastic sleeve is open at both ends, and the fixture base is provided with a through hole. The inspection mandrel enters the internal hole of the workpiece through the through hole.

[0018] In the above-mentioned online detection device for inner holes, the fixture assembly structure can be the same as the fixture assembly disclosed in the Chinese Utility Model Patent for a honing equipment for bushings (Announcement No. CN223084472U, Application Date 2024.09.20, Announcement Date 2025.07.11).

[0019] The outstanding advantages of this utility model compared to the prior art are:

[0020] This invention features a detection mandrel positioned below the fixture assembly. A sensor detects the location of the detection mandrel by sensing the position of the mounting boss, thereby determining whether the inner hole of the workpiece has been properly machined. This enables online detection, facilitating reprocessing without requiring secondary online installation. Simultaneously, a power device drives the mounting base to move vertically, ensuring that the detection mandrel does not come into contact with or damage the machining device during processing. Attached image description:

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is a perspective view of the online detection device of this utility model.

[0024] Reference numerals: 1. Cavity; 2. Connecting rod; 3. Mounting boss; 4. Detection mandrel; 5. Connecting cap; 6. Connecting seat; 7. Strip hole; 8. Mounting bracket; 9. Support; 10. Base; 11. Cylinder; 12. Platform. Detailed implementation method:

[0025] The present invention will be further described below with reference to specific embodiments. See also: Figure 1 —3:

[0026] An online inspection device for internal holes includes a mounting base disposed below a fixture assembly and driven by a power device to move vertically. The mounting base has a cavity 1, and a connecting rod 2 slides vertically within the cavity 1. A mounting boss 3 is provided on the connecting rod 2, and a spring is provided between the mounting boss 3 and the bottom surface of the cavity 1. The upper end of the connecting rod 2 extends out of the mounting base and is connected to a detection mandrel 4. The mounting base is equipped with a sensor that senses the position of the mounting boss 3. When the workpiece's internal hole is not fully machined, the power device drives the mounting base upwards, preventing the upper end of the detection mandrel 4 from entering the workpiece's internal hole, compressing the spring, and placing the mounting boss 3 in the lower position. When the workpiece's internal hole is fully machined, the power device drives the mounting base upwards, allowing the upper end of the detection mandrel 4 to enter the workpiece's internal hole, and placing the mounting boss 3 in the upper position.

[0027] The working principle of this utility model is as follows: Figure 1-3 As shown, after the machining device finishes machining the inner hole of the workpiece, the power device drives the upward-moving mounting base, which in turn moves the connecting rod 2 and the detection mandrel 4 upward. When the upper end of the detection mandrel 4 cannot enter the inner hole of the workpiece, the spring is compressed, and the sensor senses that the mounting boss 3 is in the lower position. At this time, when the inner hole of the workpiece is not machined to the required position, the power device drives the downward-moving mounting base, and the machining device continues to machine the inner hole of the workpiece. When the upper end of the detection mandrel 4 enters the inner hole of the workpiece, the sensor senses that the mounting boss 3 is in the upper position, and at this time, the inner hole of the workpiece is machined to the required position.

[0028] This invention features a detection mandrel 4 positioned below the fixture assembly. The position of the detection mandrel 4 is determined by sensing the position of the mounting boss 3 using a sensor, which in turn determines whether the inner hole of the workpiece has been machined to the required position. This enables online detection, facilitating reprocessing without requiring a second online inspection. Simultaneously, a power device drives the mounting base to move vertically, ensuring that the detection mandrel 4 does not come into contact with or damage the processing device during processing.

[0029] To facilitate the replacement of the detection mandrel 4 to fit workpieces with different inner holes, the upper end of the connecting rod 2 is screwed to the lower end of the detection mandrel 4.

[0030] The structure of the mounting base: as shown in the example Figure 1-3 As shown, the mounting base includes a connecting cap 5 and a connecting seat 6 located below the connecting cap 5. The connecting cap 5 and the connecting seat 6 together form the cavity 1. The connecting seat 6 is connected to the power device. The side wall of the connecting cap 5 is provided with a strip-shaped hole 7 arranged vertically along the length direction. The connecting cap 5 is provided with a mounting bracket 8. The sensor is provided on the mounting bracket 8 to facilitate the installation of the connecting rod 2 and the sensor.

[0031] The specific structure of the sensor: The sensor is a proximity switch. The sensing head of the proximity switch extends into the cavity 1 through the strip hole 7. When the mounting boss 3 is in the lower position, the sensing head of the proximity switch does not contact the mounting boss 3; when the mounting boss 3 is in the upper position, the sensing head of the proximity switch contacts the mounting boss 3. The structure is simple, easy to install, and the detection is accurate.

[0032] The specific installation structure of the connecting cap 5, connecting seat 6, and mounting bracket 8 is as follows: Figure 1-3 As shown, the lower end of the connecting cap 5 is provided with flange one, the upper end of the connecting seat 6 is provided with flange two, the mounting bracket 8 includes an upper plate, a lower plate, and a connecting plate connecting the upper plate and the lower plate. The connecting plate is provided with mounting holes for mounting the sensor. The mounting holes are elongated strips arranged vertically along the length direction. The lower plate, flange one, and flange two are fixedly connected by screws. The structure is simple and easy to process and install.

[0033] The specific structure of the power unit: The power unit is a cylinder 11 installed in the base 10 via a bracket 9. The piston rod of the cylinder 11 is connected to the mounting base. A platform 12 is provided above the base 10. The clamp assembly is set on the platform 12. The structure is simple and easy to install.

[0034] In order to perform online internal hole inspection for each process, the table 12 is provided with multiple fixture assemblies. Each fixture assembly is equipped with the online inspection device below it and a processing device for machining the internal hole of the workpiece is provided above it. Each processing device is driven by a corresponding drive device to move vertically. Figure 1 , 2 The final step in the process is to draw the complete online testing device; for the remaining steps, only cylinder 11 is drawn.

[0035] Furthermore, the driving device is a combination of a motor and a ball screw, a linear motor, or a linear module. In this embodiment, the driving device is a combination of a motor and a ball screw.

[0036] To achieve automated control, a controller is also included, and the cylinder, sensor, processing device, and drive device are electrically connected to the controller.

[0037] The specific structure of the fixture assembly: The fixture assembly includes a fixture base and an elastic sleeve disposed in the fixture base. The elastic sleeve is open at both ends, and the fixture base is provided with a through hole. The detection mandrel 4 enters the inner hole of the workpiece through the through hole.

[0038] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. An apparatus for on-line inspection of an internal bore, characterized by: The device includes a mounting base located below the fixture assembly and driven by a power unit to move vertically. The mounting base has a cavity (1) inside, and a connecting rod (2) slides vertically inside the cavity (1). The connecting rod (2) has a mounting boss (3). A spring is provided between the mounting boss (3) and the bottom surface of the cavity (1). The upper end of the connecting rod (2) extends out of the mounting base and is connected to a detection mandrel (4). The mounting base is equipped with a sensor that senses the position of the mounting boss (3). When the inner hole of the workpiece is not machined to the required position, the power unit drives the mounting base to move upward, and the upper end of the detection mandrel (4) cannot enter the inner hole of the workpiece, compressing the spring, and the mounting boss (3) is in the lower position. When the inner hole of the workpiece is machined to the required position, the power unit drives the mounting base to move upward, and the upper end of the detection mandrel (4) enters the inner hole of the workpiece, and the mounting boss (3) is in the upper position.

2. The apparatus for on-line inspection of an internal hole according to claim 1, wherein: The mounting base includes a connecting cap (5) and a connecting seat (6) located below the connecting cap (5). The connecting cap (5) and the connecting seat (6) together form the cavity (1). The connecting seat (6) is connected to the power device. The side wall of the connecting cap (5) is provided with a strip-shaped hole (7) arranged vertically along the length direction. The connecting cap (5) is provided with a mounting bracket (8) outside the connecting cap (5). The sensor is provided on the mounting bracket (8).

3. An apparatus for on-line inspection of an internal bore according to claim 2, wherein: The sensor is a proximity switch. The sensing head of the proximity switch extends into the cavity (1) through the strip hole (7). When the mounting boss (3) is in the lower position, the sensing head of the proximity switch does not contact the mounting boss (3); when the mounting boss (3) is in the upper position, the sensing head of the proximity switch contacts the mounting boss (3).

4. The apparatus of claim 2, wherein: The lower end of the connecting cap (5) is provided with flange one, the upper end of the connecting seat (6) is provided with flange two, the mounting bracket (8) includes an upper plate, a lower plate, and a connecting plate connecting the upper plate and the lower plate. The connecting plate is provided with mounting holes for mounting the sensor. The mounting holes are elongated strips arranged vertically along the length direction. The lower plate, flange one and flange two are fixedly connected by screws.

5. The apparatus of claim 1 wherein: The power unit is a cylinder (11) mounted in the base (10) via a bracket (9). The piston rod of the cylinder (11) is connected to the mounting base. A platform (12) is provided above the base (10), and the clamp assembly is set on the platform (12).

6. An apparatus for the on-line inspection of an internal bore according to claim 5, characterised in that: The platform (12) is provided with multiple clamping assemblies. Each clamping assembly is provided with a line detection device below it and a processing device for machining the inner hole of the workpiece is provided above it. Each processing device is driven by a corresponding driving device to move vertically.

7. An apparatus for the on-line inspection of an internal bore according to claim 6, characterised in that: It also includes a controller, and the cylinder (11), sensor, processing device and drive device are electrically connected to the controller respectively.

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