Cleaning detection device for box shell type threaded blind hole

Abstract

The utility model relates to a cleaning detection device for box shell type threaded blind holes, a moving mechanism is connected with a six-axis robot and drives a blowing mechanism and a color spraying mechanism to operate synchronously, the moving mechanism comprises a moving seat and a rear cover, and the rear side of the moving seat is provided with a connecting seat connected with the six-axis robot; the chip blowing mechanism is used for stretching into a threaded blind hole of a workpiece for cleaning and comprises a pipe base, a chip blowing pipe, a spring, a cleaning pipe and a first electromagnetic valve, and the detection mechanism is used for monitoring the position of the chip blowing pipe stretching into the threaded blind hole of the workpiece and the pressure of the threaded blind hole and comprises a position sensor and a pressure sensor. The color spraying mechanism comprises a nozzle, a pigment pipe and a second electromagnetic valve. The automatic control system is electrically connected with the position sensor, the pressure sensor, the first electromagnetic valve and the second electromagnetic valve. According to the utility model, not only can the threaded blind hole be cleaned, but also the hole depth and perforation of the threaded blind hole can be detected, and bad parts can be marked, so that the cleaning and detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a cleaning detection device for box shell threaded blind holes, belonging to the technical field of box shell parts processing. Background Art

[0002] There are many threaded blind holes that need to be processed on the engine block, gearbox housing, transmission box and other box shell parts, and the box is assembled and connected with various types of parts through fasteners. In order to improve the processing efficiency of the box shell hole system, multi-axis drilling machines are generally used for processing. After the processing is completed, compressed air is used to blow the blind holes to blow away the iron filings, and then a cleaning agent is used for cleaning. However, it is very difficult to remove the residual iron filings inside the blind hole threads of the box shell. The cleaning machine cannot clean them thoroughly, and the residual iron filings will cause the bolts to not be screwed in. The iron filings at the bottom will cause the bolts to be screwed in insufficiently, affecting the assembly quality. Therefore, it still takes a lot of manpower to blow out the iron filings with compressed air. The flying iron filings and dust pollute the environment and are harmful to human health.

[0003] If the threaded holes of box shells are drilled too deep, it will cause perforation and oil leakage after assembly; if the holes are drilled too shallowly, the bolts will not be screwed into place and the connection force of the joint surface will be insufficient. Since there are many holes in box shells, the workload of detecting the depth of threaded blind holes and penetration is very large. Summary of the invention

[0004] The utility model aims to provide a cleaning and detection device for threaded blind holes of box shells, which has a reasonable structure and can not only clean threaded blind holes, but also detect the hole depth and perforation of the threaded blind holes and mark defective parts, thereby improving the cleaning and detection efficiency.

[0005] The utility model is a technical solution to achieve the above-mentioned purpose: a cleaning detection device for threaded blind holes of box shells, characterized in that it includes a moving mechanism, a chip blowing mechanism, a detection mechanism, a color spraying mechanism and an automatic control system.

[0006] The moving mechanism is connected to the six-axis robot and is used to drive the blowing mechanism and the color spraying mechanism to operate synchronously, and includes a moving seat and a rear cover. The moving seat is provided with a cavity and a front guide hole through which the tube seat passes. The rear cover is installed at the rear of the moving seat. The rear cover is provided with a rear guide hole through which the tube seat passes. The rear side of the moving seat is provided with a connecting seat connected to the six-axis robot.

[0007] The chip blowing mechanism is used to extend into the threaded blind hole of the workpiece for cleaning, and comprises a tube seat, a chip blowing tube, a spring, a cleaning tube and a first solenoid valve. The tube seat is provided with a hole and a spring seat for the cleaning medium to pass through. The two ends of the tube seat extend out of the moving seat and the adjusting seat and are connected to the hollow chip blowing tube and the cleaning tube. The cleaning tube is provided with a first solenoid valve for controlling the cleaning medium. The spring is sleeved on the tube seat, and the two ends of the spring are respectively pressed against the spring seat and the rear cover of the tube seat.

[0008] The detection mechanism is used to monitor the position of the chip blowing pipe extending into the threaded blind hole of the workpiece and the pressure at the threaded blind hole, and includes a position sensor and a pressure sensor. The position sensor is installed on the moving seat, and the pressure sensor is installed on the pipe seat or the cleaning pipe on the outlet side of the first solenoid valve.

[0009] The spray mechanism comprises a nozzle, a pigment tube and a second electromagnetic valve. The nozzle is mounted at the front end of the movable seat, and the nozzle outlet faces the threaded blind hole. The pigment tube is connected to the nozzle, and the pigment tube is provided with a second electromagnetic valve.

[0010] The automatic control system is electrically connected to the position sensor, the pressure sensor, and the first solenoid valve and the second solenoid valve. The automatic control system receives detection signals from the position sensor and the pressure sensor and controls the opening and closing of the first solenoid valve and the second solenoid valve. The automatic control system sends an alarm signal when there is an abnormality in the threaded blind hole.

[0011] The cleaning detection device of the utility model adopts a moving mechanism, a chip blowing mechanism, a detection mechanism and a color spraying mechanism. The moving mechanism is connected with the six-axis robot, so it can drive the air blowing mechanism and the color spraying mechanism to run synchronously, and the chip blowing pipe of the chip blowing mechanism is extended into the threaded blind hole to be cleaned and pressed on the bottom of the hole under the action of a spring, and the threaded blind hole is rushed to by an air-liquid cleaning medium, so that the inside of the threaded blind hole can be cleaned quickly and conveniently. At the same time, the position sensor feeds back whether the position of the chip blowing pipe is the same as the set value, and the pressure sensor performs pressure detection on the passing of the air-liquid cleaning medium. When the position of the chip blowing pipe is abnormal and the pressure is abnormal, the automatic control system controls the second solenoid valve to work, and the color spraying device is started to spray a color mark on the threaded hole to be detected. Therefore, the utility model can not only clean the threaded blind hole, but also detect the hole depth of the threaded blind hole and whether it is perforated, and can mark the defective parts, thereby improving the cleaning and detection efficiency, greatly reducing the labor intensity of manual auxiliary detection, and can be connected with other equipment for use, with wide applicability and strong variability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0013] Figure 1 The utility model is a structural schematic diagram of a cleaning detection device for threaded blind holes of box shells.

[0014] Wherein: 1—workpiece, 1-1—threaded blind hole, 2—chip blowing pipe, 3—moving seat, 3-1—pigment channel, 3-2—connecting seat, 4—tube seat, 4-1—spring seat, 4-2—channel, 5—position sensor, 6—spring, 7—back cover, 8—automatic control system, 9—dustproof sealing ring, 10—nozzle, 11—dustproof cover, 12—second quick-insert pipe connector, 13—first quick-insert pipe connector, 14—pigment tube, 15—cleaning tube, 16—first solenoid valve, 17—second solenoid valve. DETAILED DESCRIPTION

[0015] See Figure 1 As shown, the utility model is a cleaning and detecting device for threaded blind holes of box shells, comprising a moving mechanism, a chip blowing mechanism, a detecting mechanism, a color spraying mechanism and an automatic control system 8.

[0016] See Figure 1 As shown, the mobile mechanism of the utility model is connected to the six-axis robot and is used to drive the blowing mechanism and the color spraying mechanism to operate synchronously, including a mobile seat 3 and a rear cover 7. The mobile seat 3 is provided with a cavity and a front guide hole through which the tube seat 4 passes. The rear cover 7 is installed at the rear of the mobile seat 3. The rear cover 7 can be snapped onto the rear of the mobile seat 3, or as shown in FIG. Figure 1 As shown, the rear cover 7 is screwed onto the movable seat 3 and its position can be adjusted. A space for accommodating the position sensor 5 is formed between the movable seat 3 and the rear cover 7, which can also facilitate the installation of the chip blowing pipe 2 and the spring 6. The rear cover 7 is provided with a rear guide hole through which the tube seat 4 passes. The tube seat 4 is guided by the front guide hole and the rear guide hole so that the tube seat 4 can move reliably. The rear side of the movable seat 3 is provided with a connecting seat 3-2 connected to the six-axis robot. The connecting seat 3-2 is a flange, which is connected to the six-axis robot through fasteners. The moving mechanism is driven by the six-axis robot with a position program set, and the chip blowing pipe 2 is inserted into the threaded blind hole 1-1 of the workpiece 1 to be cleaned according to the program.

[0017] See Figure 1 As shown, the movable seat 3 of the utility model is provided with a gap communicating with the cavity, and the dust cover 11 is installed on the movable seat 3 by fasteners and covers the gap of the movable seat 3. Since the dust cover 11 can be detachably installed on the movable seat, the installation and maintenance of the position sensor 5 are convenient, and the movable seat 3 is sealed by the dust cover 11.

[0018] See Figure 1As shown, the chip blowing mechanism of the utility model is used to extend into the threaded blind hole 1-1 of the workpiece 1 for cleaning, and includes a tube seat 4, a chip blowing tube 2, a spring 6, a cleaning tube 15 and a first solenoid valve 16. The tube seat 4 is provided with a channel 4-2 for the passage of a cleaning medium and a spring seat 4-1. The two ends of the tube seat 4 extend out of the movable seat 3 and the back cover 7 and are connected to the hollow chip blowing tube 2 and the cleaning tube 15, so as to facilitate the installation of the chip blowing tube 2 and the cleaning tube 15. The cleaning medium in the cleaning tube 15 is passed into the chip blowing tube 2 through the tube seat 4, and compressed gas and cleaning liquid are blown out through the chip blowing tube 2 to clean the threaded blind hole 1-1 of the workpiece 1. The cleaning medium of the utility model can be compressed gas and / or cleaning liquid. According to the setting of the workpiece, a first solenoid valve 16 for controlling the cleaning medium is provided on the cleaning tube 15. By opening and closing the first solenoid valve 16, a pulsed airflow or water flow can be emitted to purge and clean the threaded blind hole 1-1. See Figure 1 As shown, the spring 6 of the utility model is sleeved on the tube seat 4, and the two ends of the spring 6 are respectively pressed against the spring seat 4-1 of the tube seat 4 and the rear cover 7. When the six-axis robot is stationary, the chip blowing tube 2 is pushed toward the bottom of the hole through the tube seat 4 by the spring force, so that one end of the chip blowing tube 2 keeps in contact with the bottom of the hole, and the threaded blind hole 1-1 of the workpiece 1 can be thoroughly cleaned, and the depth position of the threaded blind hole 1-1 can also be fed back.

[0019] See Figure 1 As shown, the movable seat 3 of the utility model is provided with a groove at the front end of the front guide hole, and the dustproof sealing ring 9 is installed in the groove to seal the pipe seat 4, so that the movable pipe seat 4 is dustproof and sealed. When cleaning the threaded blind holes 1-1 with different workpieces 1 and different hole depths, the dust can be reduced in the front guide hole, so that the pipe seat 4 can move smoothly and keep one end of the chip blowing pipe 2 in contact with the bottom of the hole. Figure 1 As shown, internal threaded holes are respectively provided at both ends of the tube seat 4, and the chip blowing tube 2 and the first quick-connect tube connector 13 are screwed into the internal threaded holes at both ends of the tube seat 4, and the first quick-connect tube connector 13 is fixedly connected to the cleaning tube 15. Therefore, chip blowing tubes 2 of different sizes can be replaced according to different workpieces 1 and threaded blind holes 1-1 of different sizes, and can also be quickly connected to the cleaning tube 15.

[0020] See Figure 1As shown, the detection mechanism of the utility model is used to monitor the position of the chip blowing pipe 2 extending into the threaded blind hole 1-1 of the workpiece 1 and the pressure at the threaded blind hole 1-1, including a position sensor 5 and a pressure sensor. The position sensor 5 is installed on the movable seat 3, and the pressure sensor is installed on the pipe seat 4 or the cleaning pipe 15 on the outlet side of the first solenoid valve 16. Therefore, the position sensor 5 detects the position of the pipe seat 4, and then reflects whether the position of the chip blowing pipe 2 is the same as the set value, and detects the hole depth of the threaded blind hole 1-1. Once the hole depth is different from the set value, the automatic control system 8 sends an opening signal to the second solenoid valve 17 to spray a color mark on the detected threaded hole. The pressure sensor of the utility model can adopt a small pressure sensor, which is installed on the pipe seat 4 and communicated with the channel 4-2, or the pressure sensor is located on the cleaning pipe 15 on the outlet side of the first solenoid valve 16. Therefore, the pressure change blown out by the chip blowing pipe 2 is used to detect whether the threaded blind hole 1-1 is perforated. When the threaded blind hole 1-1 is perforated, the chip blowing pipe 2 will have abnormal pressure, and the automatic control system 8 will output an abnormal pressure signal, send an opening signal to the second solenoid valve 17, and the color spraying mechanism will spray a color mark on the orifice of the detected threaded blind hole 1-1.

[0021] See Figure 1 As shown, the color spraying mechanism of the utility model includes a nozzle 10, a pigment tube 14 and a pigment solenoid valve. The nozzle 10 is installed at the front end of the movable seat 3, and the outlet of the nozzle 10 faces the threaded blind hole 1-1. The pigment tube 14 is connected to the nozzle 10. A second solenoid valve 17 is arranged on the pigment tube 14. When the hole depth or pressure of the threaded blind hole 1-1 is abnormal, the second solenoid valve 17 is opened, and the pigment in the pigment tube 14 is sprayed with a color mark on the detected threaded hole through the nozzle 10.

[0022] See Figure 1 As shown, a pigment channel 3-1 is provided on the movable seat 3 of the utility model, and internal threaded holes are provided at both ends of the pigment channel 3-1 of the movable seat 3. The nozzle 10 and the second quick-insert pipe connector 12 are screwed into the internal threaded holes at both ends of the movable seat 3, and the second quick-insert pipe connector 12 is fixedly connected to the pigment tube 14. Since the pigment channel 3-1 is provided on the movable seat 3, the installation and replacement of the pigment tube 14 and the nozzle 10 are convenient, and the appearance of the cleaning detection device can be kept simple.

[0023] See Figure 1 As shown, the automatic control system 8 of the utility model is electrically connected to the position sensor 5, the pressure sensor, and the first solenoid valve 16 and the second solenoid valve 17. The automatic control system 8 adopts the existing programmable controller. The automatic control system 8 receives the detection signals of the position sensor 5 and the pressure sensor and controls the opening and closing of the first solenoid valve 16 and the second solenoid valve 17, and sends out an alarm signal when there is an abnormality in the threaded blind hole 1-1. Therefore, no matter the hole depth and pressure of the threaded blind hole 1-1 are abnormal, an alarm signal can be sent to enable the operator to check.

[0024] See Figure 1 As shown, the cleaning detection device of the utility model is installed on a six-axis robot on a cleaning line. When the conveying system sends the workpiece 1 to be cleaned to the designated position and clamps it for positioning, the six-axis robot extends the chip blowing pipe 2 into the threaded blind hole 1-1 to be cleaned according to the designated coordinate position through a pre-set program. The chip blowing pipe 2 keeps in contact with the bottom of the hole under the action of the spring 6. The automatic control system 8 controls the first solenoid valve 16 to send out a pulsed airflow or water flow to clean the inside of the thread. At the same time, the position sensor 5 feedbacks whether the position of the chip blowing pipe 2 is the same as the set value. The pressure sensor detects the pressure in the channel 4-2 of the pipe seat 4 or the pressure in the cleaning pipe 15. When the hole depth is different from the set value and the pressure in the threaded blind hole 1-1 is abnormal, the automatic control system 8 controls the second solenoid valve 17 to open, sprays a color mark on the orifice of the threaded blind hole 1-1 to be detected, and the six-axis robot cleans and detects the threaded blind holes 1-1 on the workpiece 1 one by one according to the compiled program. If there is no abnormality, the next workpiece 1 is cleaned and detected. If the hole depth and pressure of the threaded blind hole 1-1 are found to be abnormal, the cleaning equipment alarms and the operator checks and confirms.

Claims

1. A cleaning detection device for threaded blind holes of box shells, characterized in that: It includes moving mechanism, chip blowing mechanism, detection mechanism, color spraying mechanism and automatic control system. The moving mechanism is connected to the six-axis robot and is used to drive the blowing mechanism and the color spraying mechanism to operate synchronously, and includes a moving seat and a rear cover. The moving seat is provided with a cavity and a front guide hole through which the tube seat passes. The rear cover is installed at the rear of the moving seat. The rear cover is provided with a rear guide hole through which the tube seat passes. The rear side of the moving seat is provided with a connecting seat connected to the six-axis robot. The chip blowing mechanism is used to extend into the threaded blind hole of the workpiece for cleaning, and comprises a tube seat, a chip blowing tube, a spring, a cleaning tube and a first solenoid valve. The tube seat is provided with a hole and a spring seat for the cleaning medium to pass through. The two ends of the tube seat extend out of the moving seat and the adjusting seat and are connected to the hollow chip blowing tube and the cleaning tube. The cleaning tube is provided with a first solenoid valve for controlling the cleaning medium. The spring is sleeved on the tube seat, and the two ends of the spring are respectively pressed against the spring seat and the rear cover of the tube seat. The detection mechanism is used to monitor the position of the chip blowing pipe extending into the threaded blind hole of the workpiece and the pressure at the threaded blind hole, and includes a position sensor and a pressure sensor. The position sensor is installed on the moving seat, and the pressure sensor is installed on the pipe seat or the cleaning pipe on the outlet side of the first solenoid valve. The spray mechanism comprises a nozzle, a pigment tube and a second electromagnetic valve. The nozzle is mounted at the front end of the movable seat, and the nozzle outlet faces the threaded blind hole. The pigment tube is connected to the nozzle, and the pigment tube is provided with a second electromagnetic valve. The automatic control system is electrically connected to the position sensor, the pressure sensor, and the first solenoid valve and the second solenoid valve. The automatic control system receives detection signals from the position sensor and the pressure sensor and controls the opening and closing of the first solenoid valve and the second solenoid valve. The automatic control system sends an alarm signal when there is an abnormality in the threaded blind hole.

2. A cleaning detection device for threaded blind holes of box shells according to claim 1, characterized in that: The movable seat is provided with a groove at the front end of the front guide hole, and a dustproof sealing ring is installed in the groove to seal the pipe seat. Internal threaded holes are respectively provided at both ends of the pipe seat. The chip blowing pipe and the first quick-insert pipe joint are screwed on the internal threaded holes at both ends of the pipe seat, and the first quick-insert pipe joint is fixedly connected to the cleaning pipe.

3. A cleaning detection device for threaded blind holes of box shells according to claim 1 or 2, characterized in that: The movable seat is provided with a pigment channel, and the movable seat is provided with internal threaded holes at both ends of the pigment channel. The nozzle and the second quick-insert pipe joint are screwed to the internal threaded holes at both ends of the movable seat, and the second quick-insert pipe joint is fixedly connected to the pigment tube.

4. A cleaning detection device for threaded blind holes of box shells according to claim 1 or 2, characterized in that: The movable seat is provided with a notch and the cavities are communicated with each other. The dust cover is installed on the movable seat through a fastener and covers the notch of the movable seat.

5. The cleaning detection device for threaded blind holes of box shells according to claim 1, characterized in that: The rear cover is screwed onto the movable seat and its position can be adjusted.

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