Multi-station size online detection system for machined parts

Abstract

The invention discloses a machining part multi-station size online detection system, and relates to the technical field of size measurement. Through the scheme of combining multi-station linkage, the conductive contact plate and hydraulic sensing, the working parameters of the detection system can be automatically adjusted, and personal errors and equipment errors in a traditional method are overcome. By means of the automatic detection mode, measurement inconsistency caused by manual operation or external factors is avoided, and it is ensured that the detection result of each part is more accurate and stable. The distance between the conductive contact plates can be automatically adjusted and detected by adjusting a motor, an adjusting screw rod and a spring system, and the size detection requirements of parts with different outer diameters are met.

Description

Technical Field

[0001] The present invention relates to the technical field of dimensional measurement, and particularly to an on-line multi-station dimensional inspection system for machined parts. Background Art

[0002] In traditional multi-station dimensional inspection systems, manual or single-station inspection methods are usually adopted. The traditional station inspection system mainly relies on manual operation or a single sensor to complete the dimensional measurement of each station. This method not only has low efficiency but is also easily affected by human factors, resulting in measurement errors. The manual measurement method is often cumbersome and time-consuming, and the inspection process is relatively complex. Especially when dealing with a large number of parts, it is easy to have operation mistakes or omissions. In addition, the automated systems for multi-station dimensional inspection usually have difficulty adapting to parts of different specifications and sizes. Due to the large dimensional differences between each part, the inspection process of the traditional system may require repeated adjustment and manual setting, increasing the downtime and adjustment complexity of the production line. Therefore, the existing multi-station dimensional inspection systems have problems such as low inspection efficiency, low automation level, and poor adaptability, and cannot meet the requirements of modern production lines for efficient and accurate dimensional inspection. Summary of the Invention

[0003] To overcome the defects of the above-mentioned prior art, the present invention provides the following technical solution: An on-line multi-station dimensional inspection system for machined parts, including a support frame, on which an adjustment motor bracket is fixedly installed, an adjustment motor is fixedly installed on the adjustment motor bracket, an adjustment lead screw is fixedly installed on the output shaft of the adjustment motor, the adjustment lead screw can drive two detection conductive contact plates to move relative to each other, and the two detection conductive contact plates are slidably arranged on the support frame through springs; the support frame is fixedly installed on two parallel side support panels, and a pressing chamber is also fixedly provided on the side support panel, a pressing piston is slidably and sealingly arranged in the pressing chamber, a support sliding column is coaxially fixedly installed on the pressing piston, and a lower pressing plate is fixedly installed at the top of the support sliding column; it further includes a conveyor belt for conveying the parts processed at multiple stations to the lower pressing plate, wherein the lower pressing plate is arranged inside the conveyor belt, and the upper surface of the lower pressing plate is in sliding contact and cooperation with the conveyor belt.

[0004] Preferably, two parallel contact plate support sliding rods are fixedly installed on each detection conductive contact plate, the contact plate support sliding rods are in sliding cooperation with the support frame, springs are wound around each contact plate support sliding rod, and the two ends of the springs are fixedly cooperated with the detection conductive contact plate and the support frame; an adjustment lifting beam is sleeved on the adjustment lead screw through threads, and the two ends of the adjustment lifting beam are movably connected to the two detection conductive contact plates through adjustment connecting rods.

[0005] Preferably, the bottom end of the pressing chamber is fixedly connected and communicated with a pressure guiding seat. An annular leaf spring is elastically arranged between the pressing chamber and the lower pressing plate. The top end of the pressing chamber is provided with a ventilation hole. The pressure guiding seat is fixedly connected and communicated with a detection cylinder through a pressure guiding pipe, and the detection cylinder is fixed on the side supporting panel.

[0006] Preferably, a reflective piston plate is slidably and hermetically arranged in the detection cylinder. The detection cylinder, the pressure guiding pipe, the pressure guiding seat and the pressing chamber are filled with liquid, and the pressing piston and the supporting sliding column are hollow inside.

[0007] Preferably, a connecting mounting plate is fixedly installed on the outer surface of the detection cylinder. A laser emitter, a reflective lens and a light sensor are fixedly installed on the connecting mounting plate. A reflective surface is arranged on the upper surface of the reflective piston plate. The light emitted by the laser emitter is reflected to the reflective lens through the reflective piston plate, and then reflected to the light sensor through the reflective lens. The movement change of the reflective piston plate is detected by the light sensor.

[0008] Preferably, an electromagnet support and a copper plate support are also fixedly installed on the base. A copper plate is fixedly installed on the copper plate support, and a resistance sliding bar and an electromagnet are fixedly installed on the electromagnet support. The copper plate is arranged inside the conveyor belt, and the upper surface of the copper plate is in sliding contact with the conveyor belt.

[0009] Preferably, a permanent magnet sliding rod is slidably fitted to the axial center position of the electromagnet. A permanent magnet contact block is fixedly installed at the bottom end of the permanent magnet sliding rod, and a driving rod is fixedly installed at the top end of the permanent magnet sliding rod.

[0010] Preferably, a resistance sliding block is slidably and conductively arranged on the resistance sliding bar. The resistance sliding block and the top end of the driving rod are movably connected through a measuring sliding connecting rod.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) Through the scheme of multi-station linkage and the combination of a conductive contact plate and hydraulic sensing, the present invention can automatically adjust the working parameters of the detection system, overcoming the human error and equipment error in the traditional method. This automated detection method avoids the measurement inconsistency caused by manual operation or external factors, ensuring that the detection results of each part are more accurate and stable; (2) By adjusting the motor, the adjusting lead screw and the spring system, the present invention can automatically adjust the distance between the detection conductive contact plates to meet the size detection requirements of parts with different outer diameters; (3) Through the cooperation of the conveyor belt and size detection, the present invention can continuously detect the processed parts, not only realizing the automatic transmission and detection between stations, but also avoiding the time waste in manual detection, improving the overall production efficiency and reducing the production bottleneck caused by too long detection cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 For the present invention Figure 1 is a schematic structural view of part A in the present invention.

[0014] Figure 3 is a schematic structural view of the permanent magnet slide bar in the present invention.

[0015] Figure 4 is a schematic structural view of the support frame in the present invention.

[0016] Figure 5 For the present invention Figure 4 is a schematic structural view of part B in the present invention.

[0017] Figure 6 is a schematic structural view of the downward pressure chamber in the present invention.

[0018] In the figure: 101 - base; 102 - resistance slide bar; 103 - measurement slide link; 104 - resistance slider; 105 - drive rod; 106 - permanent magnet slide bar; 107 - electromagnet; 108 - electromagnet bracket; 109 - copper plate bracket; 110 - copper plate; 111 - permanent magnet contact block; 112 - side support panel; 113 - detection cylinder; 114 - reflective piston plate; 115 - laser emitter; 116 - reflective lens; 117 - light sensor; 118 - connection mounting plate; 119 - pressure guiding pipe; 120 - support frame; 121 - adjustment motor bracket; 122 - adjustment motor; 123 - adjustment lifting beam; 124 - adjustment link; 125 - adjustment lead screw; 126 - detection conductive contact plate; 127 - contact plate support slide bar; 128 - spring; 129 - support slide column; 130 - pressure guiding seat; 131 - downward pressure piston; 132 - air vent hole; 133 - annular leaf spring; 134 - lower pressing plate; 135 - conveyor belt; 136 - downward pressure chamber. Detailed implementation manners

[0019] The following combines with the attached Figures 1-6 drawings and further illustrates the technical solutions of the present invention through specific implementation manners.

[0020] The present invention provides an on-line dimensional inspection system for machined parts with multiple workstations, which includes a support frame 120. An adjustment motor bracket 121 is fixedly installed on the support frame 120, and an adjustment motor 122 is fixedly installed on the adjustment motor bracket 121. An adjustment lead screw 125 is fixedly installed on the output shaft of the adjustment motor 122. The adjustment lead screw 125 can drive two detection conductive contact plates 126 to move relative to each other. The two detection conductive contact plates 126 are slidably arranged on the support frame 120 through springs 128. The support frame 120 is fixedly installed on two parallel side support panels 112. A pressing chamber 136 is also fixedly provided on the side support panel 112. A pressing piston 131 is slidably and sealingly arranged in the pressing chamber 136. A support sliding column 129 is coaxially and fixedly installed on the pressing piston 131. A lower pressing plate 134 is fixedly installed at the top end of the support sliding column 129. It further includes a conveyor belt 135, which is used to convey the parts processed at multiple workstations to the position of the lower pressing plate 134. The lower pressing plate 134 is arranged inside the conveyor belt 135, and the upper surface of the lower pressing plate 134 is in sliding contact and cooperation with the conveyor belt 135.

[0021] Two parallel contact plate support sliding rods 127 are fixedly installed on each detection conductive contact plate 126. The contact plate support sliding rods 127 are in sliding cooperation with the support frame 120. Springs 128 are arranged around each contact plate support sliding rod 127. The two ends of the spring 128 are fixedly fitted with the detection conductive contact plate 126 and the support frame 120. An adjustment lifting beam 123 is sleeved on the adjustment lead screw 125 through a thread. The two ends of the adjustment lifting beam 123 are movably connected to the two detection conductive contact plates 126 through adjustment connecting rods 124.

[0022] A pressure guiding seat 130 is fixedly communicated with the bottom end of the pressing chamber 136. An annular leaf spring 133 is elastically arranged between the pressing chamber 136 and the lower pressing plate 134. A ventilation hole 132 is opened at the top end of the pressing chamber 136. The pressure guiding seat 130 is fixedly communicated with a detection cylinder 113 through a pressure guiding pipe 119. The detection cylinder 113 is fixed on the side support panel 112. A reflective piston plate 114 is slidably and sealingly arranged in the detection cylinder 113. The detection cylinder 113, the pressure guiding pipe 119, the pressure guiding seat 130, and the pressing chamber 136 are filled with liquid, and the pressing piston 131 and the support sliding column 129 are hollow inside. A connection mounting plate 118 is fixedly installed on the outer surface of the detection cylinder 113. A laser emitter 115, a reflective lens 116, and a light sensor 117 are fixedly installed on the connection mounting plate 118. A reflective surface is arranged on the upper surface of the reflective piston plate 114. The light emitted by the laser emitter 115 is reflected by the reflective piston plate 114 to the reflective lens 116, and then reflected by the reflective lens 116 to the light sensor 117. The movement change of the reflective piston plate 114 is detected by the light sensor 117.

[0023] An electromagnet support 108 and a copper plate support 109 are also fixedly installed on the base 101. A copper plate 110 is fixedly installed on the copper plate support 109, and a resistance sliding bar 102 and an electromagnet 107 are fixedly installed on the electromagnet support 108. The copper plate 110 is arranged inside the conveyor belt 135, and the upper surface of the copper plate 110 is in sliding contact with the conveyor belt 135. A permanent magnet sliding rod 106 is slidably fitted at the axial center position of the electromagnet 107. A permanent magnet contact block 111 is fixedly installed at the bottom end of the permanent magnet sliding rod 106, and a driving rod 105 is fixedly installed at the top end of the permanent magnet sliding rod 106. A resistance sliding block 104 is slidably arranged on the resistance sliding bar 102 in a conductive manner, and the resistance sliding block 104 is movably connected to the top end of the driving rod 105 through a measuring sliding connecting rod 103.

[0024] The working principle of a multi-station on-line dimension detection system for machined parts disclosed by the present invention is as follows: all stations are arranged in series and placed on the movement path of the conveyor belt 135. The machined parts are placed on the conveyor belt 135, and the conveyor belt 135 conveys the parts between two detection conductive contact plates 126. The gap between the two detection conductive contact plates 126 represents the outer diameter of the part (circular part). The two detection conductive contact plates 126 and a buzzer alarm are connected in series in a DC power supply. If the size of the part exceeds the standard, it will contact the two detection conductive contact plates 126, resulting in the formation of a closed circuit between the two detection conductive contact plates 126. At this time, the buzzer alarm sounds, indicating that the size of the part exceeds the standard. Specifically, the distance between the two detection conductive contact plates 126 can be adjusted by controlling the adjustment motor 122, that is, adjusting the alarm threshold. The output shaft of the adjustment motor 122 drives the adjustment screw rod 125 to rotate, and the adjustment screw rod 125 drives the adjustment lifting beam 123 to move axially, and then drives the two detection conductive contact plates 126 to move relative to each other through two adjustment connecting rods 124.When the outer diameter of the part is qualified, it will move to the position of the lower pressure plate 134. Under the action of gravity, the part will press down the lower pressure plate 134 (meanwhile, the annular leaf spring 133 deforms). The lower pressure plate 134 applies a downward force to the lower pressure piston 131 through the support sliding column 129. The lower pressure piston 131 pushes the liquid inside the lower pressure chamber 136 to flow through the pressure guide pipe 119 into the inside of the detection cylinder 113, resulting in more liquid inside the detection cylinder 113. At this time, the liquid inside the detection cylinder 113 will push the reflective piston plate 114 to move upward, which will cause the position where the light emitted by the laser emitter 115 irradiates on the reflective piston plate 114 to change (the light emitted by the laser emitter 115 irradiates obliquely on the reflective piston plate 114). At this time, the position of the light reflected from the reflective piston plate 114 to the reflective lens 116 will also change. At the same time, the position of the light reflected from the reflective lens 116 to the light sensor 117 will change. By detecting whether the light changes through the light sensor 117, when the light changes, it indicates that the position of the reflective piston plate 114 has changed, and the movement amplitude of the light is proportional to the weight of the part. At this time, the light sensor 117 is used as a trigger threshold to control the electromagnet 107 to cut off the power. The electromagnet 107 is always in the energized state. The electromagnet 107 attracts the permanent magnet sliding rod 106 to the topmost position. When the electromagnet 107 cuts off the power, the magnetic force cooperation between the electromagnet 107 and the permanent magnet sliding rod 106 disappears. Under the action of gravity, the permanent magnet sliding rod 106 and the permanent magnet contact block 111 move downward. The downward movement of the permanent magnet contact block 111 makes it approach the copper plate 110. At this time, the magnetic field of the permanent magnet contact block 111 passes through the copper plate 110, thereby generating an induced current inside the copper plate 110. The induced current will generate a reverse magnetic field inside the copper plate 110, thereby preventing the permanent magnet contact block 111 from moving downward, so as to realize the annular surface fall of the permanent magnet contact block 111. The falling speed of the permanent magnet contact block 111 matches the speed of the part moving from the lower pressure plate 134 to the copper plate 110. Then the permanent magnet contact block 111 contacts the upper surface of the part. The thickness of the conveyor belt 135 is known. Therefore, subtracting the thickness of the conveyor belt 135 from the distance between the copper plate 110 and the permanent magnet contact block 111 is the thickness dimension of the part. Therefore, only by knowing the movement distance of the permanent magnet contact block 111 can we know (the distance between the highest point position of the permanent magnet contact block 111 and the copper plate 110 is known). When the permanent magnet contact block 111 and the permanent magnet sliding rod 106 move downward, they will drive the driving rod 105 to move together. The driving rod 105 drives the resistance sliding block 104 to slide on the resistance sliding bar 102 through the measuring sliding link 103. Therefore, one end of the resistance sliding bar 102 and the resistance sliding block 104 are connected in series to the DC circuit. By detecting the magnitude of the current in the circuit, the magnitude of the current is related to the movement distance of the permanent magnet contact block 111 (becomes larger or smaller, depending on which end of the resistance sliding bar 102 is connected to the circuit).After the measurement is completed, the electromagnet 107 is started again. At this time, the permanent magnet contact block 111 is reset, and it is necessary to ensure the distance between the two parts on the conveyor belt 135.

Claims

1. An on-line dimensional inspection system for multi-station machining parts, characterized in that: It includes a support frame (120), on which an adjustment motor bracket (121) is fixedly installed. An adjustment motor (122) is fixedly installed on the adjustment motor bracket (121). An adjustment lead screw (125) is fixedly installed on the output shaft of the adjustment motor (122). The adjustment lead screw (125) can drive two detection conductive contact plates (126) to move relatively. The two detection conductive contact plates (126) are slidably arranged on the support frame (120) through springs (128). The support frame (120) is fixedly installed on two parallel side support panels (112). A downward pressure chamber (136) is also fixedly provided on the side support panel (112). A downward pressure piston (131) is slidably and sealingly arranged in the downward pressure chamber (136). A support sliding column (129) is coaxially and fixedly installed on the downward pressure piston (131). A lower pressing plate (134) is fixedly installed at the top end of the support sliding column (129). It also includes a conveyor belt (135) for conveying the parts processed at multiple workstations to the lower pressing plate (134). The lower pressing plate (134) is arranged inside the conveyor belt (135), and the upper surface of the lower pressing plate (134) is in sliding contact and cooperation with the conveyor belt (135).

2. The multi-station on-line dimension inspection system for machined parts according to claim 1, characterized in that: Two parallel contact plate support slide bars (127) are fixedly installed on each detection conductive contact plate (126). The contact plate support slide bars (127) are in sliding cooperation with the support frame (120). Springs (128) are arranged around each contact plate support slide bar (127). The two ends of the spring (128) are fixedly cooperated with the detection conductive contact plate (126) and the support frame (120). An adjustment lifting beam (123) is sleeved on the adjustment lead screw (125). The two ends of the adjustment lifting beam (123) are movably connected to the two detection conductive contact plates (126) through adjustment connecting rods (124).

3. The multi-station on-line dimension inspection system for machined parts according to claim 2, characterized in that: A pressure guiding seat (130) is fixedly communicated with the bottom end of the downward pressure chamber (136). An annular leaf spring (133) is elastically arranged between the downward pressure chamber (136) and the lower pressing plate (134). A ventilation hole (132) is opened at the top end of the downward pressure chamber (136). The pressure guiding seat (130) is fixedly communicated with a detection cylinder (113) through a pressure guiding pipe (119). The detection cylinder (113) is fixed on the side support panel (112).

4. The multi-station on-line dimension inspection system for a machined part according to claim 3, characterized in that: A reflective piston plate (114) is slidably and sealingly arranged in the detection cylinder (113). The detection cylinder (113), the pressure guiding pipe (119), the pressure guiding seat (130), and the downward pressure chamber (136) are filled with liquid, and the inside of the downward pressure piston (131) and the support sliding column (129) is hollow.

5. The on-line dimensional inspection system for multi-station machining parts according to claim 4, characterized in that: A connection mounting plate (118) is fixedly mounted on the outer surface of the detection cylinder (113). A laser emitter (115), a reflecting lens (116) and a light sensor (117) are fixedly mounted on the connection mounting plate (118). A reflecting surface is provided on the upper surface of the reflecting piston plate (114). The light emitted by the laser emitter (115) is reflected by the reflecting piston plate (114) onto the reflecting lens (116), and then reflected by the reflecting lens (116) onto the light sensor (117). The movement change of the reflecting piston plate (114) is detected by the light sensor (117).

6. The multi-station on-line dimension inspection system for machined parts according to claim 5, wherein: An electromagnet support (108) and a copper plate support (109) are also fixedly mounted on the base (101). A copper plate (110) is fixedly mounted on the copper plate support (109). A resistance sliding bar (102) and an electromagnet (107) are fixedly mounted on the electromagnet support (108). The copper plate (110) is arranged inside the conveyor belt (135), and the upper surface of the copper plate (110) is in sliding contact with the conveyor belt (135).

7. The multi-station on-line dimension inspection system for machined parts according to claim 6, characterized in that: A permanent magnet sliding rod (106) is in sliding fit with the axial center position of the electromagnet (107). A permanent magnet contact block (111) is fixedly mounted at the bottom end of the permanent magnet sliding rod (106), and a driving rod (105) is fixedly mounted at the top end of the permanent magnet sliding rod (106).

8. An on-line dimensional inspection system for multi-station machining parts according to claim 7, characterized in that: A resistance sliding block (104) is conductively slidably arranged on the resistance sliding bar (102). The resistance sliding block (104) is movably connected to the top end of the driving rod (105) through a measuring sliding connecting rod (103).

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