A dimensional inspection device for drilling of castings

Abstract

This invention discloses a dimensional inspection device for piercing castings, relating to the field of dimensional measurement technology. The invention includes a base, a support plate, and a displacement assembly. The inspection unit penetrates the workpiece hole via a contact ball, using a laser emitter and a light sensor to detect the contact position, achieving high-precision dimensional measurement. The displacement assembly employs a negative pressure rotating cylinder and a resistive sliding rod design, adjusting the contact ball displacement according to the rotation speed to flexibly adapt to different hole requirements. Controlled by planetary gears and electromagnets, the contact ball can rotate to achieve multi-angle inspection. The inspection table is driven by a central electric cylinder and an edge tilt control electric cylinder, stably adjusting the workpiece posture. The equipment has a high degree of automation and is easy to operate, overcoming the limitations of traditional manual measurement methods, such as low accuracy, poor efficiency, and single-direction inspection.

Description

Technical Field

[0001] This invention relates to the field of dimensional measurement technology, specifically to a dimensional inspection device for piercing castings. Background Technology

[0002] Existing dimensional inspection techniques for pierced castings largely rely on manual measuring tools (such as vernier calipers and plug gauges) or simple mechanical inspection devices. These traditional methods typically involve operators manually measuring the dimensions of each hole one by one, or using fixed probes for unidirectional inspection. However, these techniques have significant drawbacks: First, the accuracy of manual measurement is limited by the operator's experience and attention, making it prone to errors, especially when inspecting complex holes or large batches, resulting in low efficiency. Furthermore, most current inspection equipment uses mechanical contact probes, which makes it difficult to achieve multi-angle, omnidirectional precision inspection. This leads to issues such as inconsistencies between workpiece positioning and measurement feedback, and difficulty in automating operations, limiting their application in high-requirement casting inspection. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides the following technical solution: a dimensional inspection device for piercing of castings, comprising a base, on which a top support plate and a bottom support plate are fixedly mounted in the air via multiple support columns. A displacement assembly is provided between the top support plate and the bottom support plate, the displacement assembly being used to drive the movement of the inspection unit. The inspection unit includes a light-shielding cylinder, with a conductive sliding block and a movable ball head mounting plate fixedly mounted at the bottom and top of the light-shielding cylinder, respectively. A light sensor is fixedly mounted on the side of the conductive sliding block inside the light-shielding cylinder via the light-shielding plate. A circular through hole of the same diameter is opened at the center of the light sensor and the light-shielding plate. A movable ball head is movably mounted on the movable ball head mounting plate via a ball joint connection. A contact ball is fixedly mounted on the movable ball head via a contact ball support rod. A reflector is fixedly mounted at the position of the movable ball head inside the light-shielding cylinder. The reflector and the contact ball support rod are coaxially engaged. A laser emitter is embedded at the axial center of the conductive sliding block. The light emitted by the laser emitter is irradiated onto the reflector through the circular through hole of the light sensor and the light-shielding plate.

[0004] Preferably, the contact ball support rod and the contact ball are in a fixed fit, and the contact ball support rod and the movable ball head are in a fixed fit that is easy to disassemble. The conductive sliding block is slidably mounted on the displacement assembly.

[0005] Preferably, the displacement assembly includes two parallel resistive sliding rods, wherein a conductive sliding block is slidably engaged with the resistive sliding rods, the resistive sliding rods are fixedly mounted on a resistive sliding rod bracket, the resistive sliding rod bracket is fixedly mounted on a tube shaft bracket, and an actuating piston tube is also fixedly mounted on the resistive sliding rod bracket. An actuating piston block is slidably sealed inside the actuating piston tube, and the actuating piston block and the conductive sliding block are fixedly engaged by a first force transmission rod and a second force transmission rod, wherein the first force transmission rod and the second force transmission rod form a U-shaped frame.

[0006] Preferably, a return spring is arranged around the outer surface of the first force transmission rod at a position inside the execution piston tube, and the two ends of the return spring are fixedly engaged with the ends of the execution piston block and the execution piston tube; a pressure conveying pipe is fixedly connected to the other end of the execution piston tube, and the end of the pressure conveying pipe away from the execution piston tube is fixed to the pipe shaft support. A pipe shaft that rotates with the top support plate is also fixedly installed on the pipe shaft support, and the pipe shaft is internally connected to the pressure conveying pipe.

[0007] Preferably, two concentrically arranged central toothed rings and edge toothed rings are rotatably mounted on the bottom support plate. The central toothed rings and edge toothed rings are driven by two planetary gears meshing together. The two planetary gears are rotatably mounted on a planetary gear bracket, which is rotatably mounted on the top support plate. A ring electromagnet is also fixedly mounted on the side of the top support plate facing the bottom support plate. The ring electromagnet is rotatably sleeved on the outer surface of the planetary gear bracket, and there is a magnetic engagement between the planetary gear bracket and the ring electromagnet.

[0008] Preferably, a gearbox is fixedly mounted on the top support plate, a drive gear is fixedly mounted on the input shaft of the gearbox, the drive gear meshes with the central gear ring, a friction resistance sleeve is fixedly mounted at the center position on the upper surface of the top support plate, the top end of the tube shaft passes through the friction resistance sleeve, the friction resistance sleeve is used to squeeze the tube shaft and increase the resistance of the tube shaft rotating on the top support plate, and the output shaft of the gearbox is connected to the tube shaft by a third transmission belt.

[0009] Preferably, a negative pressure rotating support plate is rotatably mounted on the upper surface of the top support plate and is concentrically arranged with the top support plate itself. A negative pressure rotating cylinder and a counterweight are fixedly mounted on the negative pressure rotating support plate. The negative pressure rotating cylinder and the tube shaft are rotated and sealed together. A counterweight negative pressure sealing piston is provided inside the negative pressure rotating cylinder for sliding sealing.

[0010] Preferably, a central electric cylinder is fixedly installed at the center of the base, and multiple edge tilt control electric cylinders are arranged in a circular equidistant array outside the central electric cylinder. All edge tilt control electric cylinders are fixedly installed on the base. The end of the telescopic rod of the central electric cylinder is connected to the detection table through a ball joint connector. The ends of the telescopic rods of all edge tilt control electric cylinders are in contact with the detection table. Multiple hooks are also provided on the upper surface of the detection table.

[0011] Preferably, a drive motor is also fixedly installed on the top support plate. The output shaft of the drive motor is connected to the negative pressure rotating support plate through a first transmission belt, and the output shaft of the drive motor is connected to the edge toothed ring through a second transmission belt.

[0012] Compared with the prior art, the present invention has the following advantages: (1) The present invention can accurately detect the size of the hole in the casting by working together with the laser emitter, the light sensor and the reflector. When the contact ball contacts the workpiece, the reflector tilts and causes the light to deflect. The light sensor captures this change and thus accurately determines the position of the contact ball. Through multiple contact measurements, high-precision data of the hole size can be obtained, avoiding the influence of human error in traditional manual measurement. It is particularly suitable for the detection of castings with complex geometry. Moreover, compared with the traditional mechanical contact method, it is not only simple in structure, but also can realize multi-angle and all-round detection. (2) The displacement component of the present invention adopts a unique design of negative pressure rotating cylinder and execution piston tube. The displacement distance of the conductive sliding block on the resistive sliding rod is adjusted by the change of rotation speed. The higher the rotation speed, the stronger the negative pressure, and the greater the tension of the reset spring, thus realizing the flexible adjustment of the position of the contact ball. (3) The present invention uses a ring electromagnet to control the rotation of the planetary gear support. Combined with the transmission of the central gear ring and the gearbox, the device can drive the contact ball to rotate around the axis of the top support plate to realize multi-angle detection. The angle sensor further monitors the rotation angle to ensure that the detection process is controllable. This design overcomes the limitations of traditional equipment that only detects in one direction. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 This is a schematic diagram of the structure of the ball joint connector of the present invention.

[0015] Figure 3 This is a schematic diagram of the structure of the negative pressure rotating cylinder of the present invention.

[0016] Figure 4 This is a schematic diagram of the structure at the central toothed ring of the present invention.

[0017] Figure 5 This is a schematic diagram of the structure at the tube shaft of the present invention.

[0018] Figure 6 This is a schematic diagram of the piston tube structure for the present invention.

[0019] Figure 7 This is a schematic diagram of the internal structure of the light-shielding tube of the present invention.

[0020] In the diagram: 101-Support column; 102-Base; 103-Detection table; 104-Top support plate; 105-Bottom support plate; 106-Hook; 107-Edge tilt control electric cylinder; 108-Center electric cylinder; 109-Ball head connector; 110-Drive motor; 111-First transmission belt; 112-Second transmission belt; 113-Negative pressure rotating support plate; 114-Counterweight; 115-Negative pressure rotating cylinder; 116-Counterweight negative pressure sealing piston; 117-Tube shaft; 118-Friction resistance sleeve; 119-Third transmission belt; 120-Gearbox; 121-Planetary gear support; 122-Ring electromagnet; 123- Drive gear; 124-Center gear ring; 125-Planetary gear; 126-Edge gear ring; 127-Tube shaft support; 128-Pressure delivery pipe; 129-Actuating piston pipe; 130-Resistant sliding rod; 131-Resistant sliding rod support; 132-Reset tension spring; 133-First force transmission rod; 134-Actuating piston block; 135-Conductive sliding block; 136-Light shielding tube; 137-Contact ball support rod; 138-Contact ball; 139-Second force transmission rod; 140-Laser emitter; 141-Light sensor; 142-Light shielding plate; 143-Reflecting mirror; 144-Moving ball head; 145-Moving ball head mounting plate. Detailed Implementation

[0021] The following is in conjunction with the appendix Figures 1-7 The technical solution of the present invention will be further illustrated through specific embodiments.

[0022] This invention provides a dimensional inspection device for piercing machining of castings, including a base 102. A top support plate 104 and a bottom support plate 105 are fixedly mounted on the base 102 via multiple support columns 101. A displacement assembly is provided between the top support plate 104 and the bottom support plate 105 to drive the movement of an inspection unit. The inspection unit includes a light-shielding cylinder 136. A conductive sliding block 135 and a movable ball-head mounting plate 145 are fixedly mounted at the bottom and top of the light-shielding cylinder 136, respectively. A light sensor 141 is fixedly mounted on the side of the conductive sliding block 135 inside the light-shielding cylinder 136 via a light-shielding plate 142. The light sensor 141 and... A circular through hole of the same diameter is opened at the center of the light-shielding plate 142. A movable ball head 144 is movably mounted on the movable ball head mounting plate 145 via a ball joint connection. A contact ball 138 is fixedly mounted on the movable ball head 144 via a contact ball support rod 137. A reflector 143 is fixedly mounted inside the light-shielding cylinder 136 at the position of the movable ball head 144. The reflector 143 and the contact ball support rod 137 are coaxially engaged. A laser emitter 140 is embedded at the axial center of the conductive sliding block 135. The light emitted by the laser emitter 140 shines onto the reflector 143 through the light sensor 141 and the circular through hole of the light-shielding plate 142. The contact ball support rod 137 and the contact ball 138 are fixedly engaged, while the contact ball support rod 137 and the movable ball head 144 are fixedly engaged in a way that allows for easy disassembly. The conductive sliding block 135 is slidably mounted on the displacement assembly.

[0023] The displacement assembly includes two parallel resistive sliding rods 130, wherein a conductive sliding block 135 is slidably engaged with the resistive sliding rods 130. The resistive sliding rods 130 are fixedly mounted on a resistive sliding rod bracket 131, which is fixedly mounted on a tube shaft bracket 127. An actuating piston tube 129 is also fixedly mounted on the resistive sliding rod bracket 131. An actuating piston block 134 is slidably sealed inside the actuating piston tube 129. The actuating piston block 134 and the conductive sliding block 135 are fixedly engaged through a first force transmission rod 133 and a second force transmission rod 139, wherein the first force transmission rod 133 and the second force transmission rod 139 form a U-shaped frame. A return spring 132 is arranged around the outer surface of the first force transmission rod 133 at a position inside the execution piston tube 129. The two ends of the return spring 132 are fixedly engaged with the execution piston block 134 and the end of the execution piston tube 129. A pressure transmission pipe 128 is fixedly connected to the other end of the execution piston tube 129. The end of the pressure transmission pipe 128 away from the execution piston tube 129 is fixed to the pipe shaft bracket 127. A pipe shaft 117 that is rotatably engaged with the top support plate 104 is also fixedly installed on the pipe shaft bracket 127. The pipe shaft 117 is connected to the inside of the pressure transmission pipe 128. Two concentrically arranged central gear rings 124 and edge gear rings 126 are rotatably mounted on the bottom support plate 105. The central gear rings 124 and edge gear rings 126 are driven by two planetary gears 125 meshing. The two planetary gears 125 are rotatably mounted on the planetary gear support 121. The planetary gear support 121 is rotatably mounted on the top support plate 104. An annular electromagnet 122 is also fixedly mounted on the side of the top support plate 104 facing the bottom support plate 105. The annular electromagnet 122 is rotatably sleeved on the outer surface of the planetary gear support 121, and there is a magnetic engagement between the planetary gear support 121 and the annular electromagnet 122.

[0024] A gearbox 120 is fixedly mounted on the top support plate 104. A drive gear 123 is fixedly mounted on the input shaft of the gearbox 120. The drive gear 123 meshes with the central gear ring 124 for transmission. A friction resistance sleeve 118 is fixedly mounted at the center of the upper surface of the top support plate 104. The top end of the tube shaft 117 passes through the friction resistance sleeve 118. The friction resistance sleeve 118 is used to squeeze the tube shaft 117, increasing the resistance of the tube shaft 117 to rotate on the top support plate 104. The output shaft of the gearbox 120 is connected to the tube shaft 117 by a third transmission belt 119. A negative pressure rotating support disk 113 is rotatably mounted on the upper surface of the top support plate 104 and is concentrically arranged with the top support plate 104 itself. A negative pressure rotating cylinder 115 and a counterweight 114 are fixedly mounted on the negative pressure rotating support disk 113. The negative pressure rotating cylinder 115 and the tube shaft 117 are rotated and sealed together. A counterweight negative pressure sealing piston 116 is slidably sealed inside the negative pressure rotating cylinder 115. A central electric cylinder 108 is fixedly installed at the center of the base 102. Multiple edge tilt control electric cylinders 107 are arranged in a circular, equidistant array around the central electric cylinder 108. All edge tilt control electric cylinders 107 are fixedly installed on the base 102. The end of the telescopic rod of the central electric cylinder 108 is connected to the detection table 103 via a ball joint connector 109. The ends of the telescopic rods of all edge tilt control electric cylinders 107 are in contact with the detection table 103. Multiple hooks 106 are also provided on the upper surface of the detection table 103. A drive motor 110 is also fixedly installed on the top support plate 104. The output shaft of the drive motor 110 is connected to the negative pressure rotating support plate 113 via a first transmission belt 111, and to the edge gear ring 126 via a second transmission belt 112.

[0025] The working principle of the dimensional inspection device for casting piercing process disclosed in this invention is as follows: The workpiece to be inspected is placed on the inspection table 103, and then the workpiece is fixed to the inspection table 103 with straps and hooks 106 to prevent loosening during inspection. By controlling all the edge tilt control cylinders 107 and the center cylinder 108, the vertical height of the workpiece on the base 102 can be raised, that is, the distance between the workpiece and the contact ball 138 can be adjusted (or by cooperating with multiple edge tilt control cylinders 107, the tilt angle of the upper surface of the inspection table 103 can be controlled, that is, the tilt angle of the workpiece can be controlled, so that the contact ball 138 can penetrate into the hole of the workpiece). The purpose is to penetrate the contact ball 138 into the hole of the workpiece. Then, the drive motor 110 is started. The output shaft of the drive motor 110 drives the negative pressure rotating support disk 113 and the edge gear ring 126 to rotate together via the first transmission belt 111 and the second transmission belt 112 (they rotate at different speeds but independently). The rotation of the edge gear ring 126 will drive the planetary gear 125 to rotate on its own axis and revolve around the sun. This is because the rotation of the center gear ring 124 needs to overcome the frictional resistance in the transmission path from the drive gear 123 to the tube shaft 117 (including the frictional resistance with the frictional resistance sleeve 118). Therefore, not all the power is transmitted to the center gear ring 124. Instead of rotating on the central gear ring 124, the rotation of the edge gear ring 126 is transmitted to the planetary gear 125, causing the central gear ring 124 to be unable to rotate. At the same time, the planetary gear 125 will rotate on its own axis and revolve around the sun. At this time, the rotation of the edge gear ring 126 cannot drive the tube shaft 117 to rotate. However, the negative pressure rotating cylinder 115 on the negative pressure rotating support plate 113 rotates at the same time as the edge gear ring 126 (the counterweight 114 is used for counterweight; the larger the diameter of the negative pressure rotating cylinder 115, the better the overall dynamic balance of rotation). The rotation of the negative pressure rotating cylinder 115 will cause the internal counterweight negative pressure sealing piston 116 to slide outward under centrifugal force. This movement causes a decrease in pressure inside the negative pressure rotating cylinder 115, which then, through the tube shaft 117 and pressure delivery pipe 128, causes a decrease in pressure inside the actuator piston tube 129. Under the external pressure difference, the atmosphere compresses the actuator piston block 134, causing it to slide deeper into the actuator piston tube 129. This stretches the return spring 132. The actuator piston block 134, through the first force transmission rod 133 and the second force transmission rod 139, drives the conductive sliding block 135 to slide on the resistive sliding rod 130. Therefore, the rotation of the negative pressure rotating cylinder 115 and the negative pressure rotating support disk 113... The faster the speed, the stronger the negative pressure inside the negative pressure rotating cylinder 115, and the more force there is to overcome the tension of the reset spring 132, thereby increasing the displacement of the actuator piston block 134 inside the actuator piston tube 129, and thus adjusting the sliding distance of the conductive sliding block 135 on the resistive sliding rod 130 (the sliding of the resistive sliding rod 130 and the conductive sliding block 135 is a resistive fit, and the specific displacement size is determined by the resistance value of the circuit formed between one end of the resistive sliding rod 130 and the conductive sliding block 135), thereby controlling the horizontal movement of the contact ball 138.

[0026] When the contact ball 138 needs to rotate, the annular electromagnet 122 is activated, and its magnetic force is controlled. The annular electromagnet 122 generates a magnetic force to constrain the rotation of the planetary gear carrier 121. After the planetary gear carrier 121 is magnetically constrained, the revolution of the planetary gear 125 is affected (it should be noted that the annular electromagnet 122 only has a magnetic interaction with the planetary gear carrier 121). Therefore, some power is transmitted to the central gear ring 124 to overcome the resistance of the central gear ring 124's rotation. When the central gear ring 124 rotates, it drives the drive gear 123 to rotate. This will cause the input shaft of the gearbox 120 to rotate, and the output shaft of the gearbox 120 will drive the tube shaft 117 to rotate via the third transmission belt 119 (the gearbox 120 is used to reduce the rotational speed of the drive gear 123 to the tube shaft 117). The rotation of the tube shaft 117 will drive the resistance sliding rod support 131 to rotate via the tube shaft support 127, thereby driving the entire resistance sliding rod 130 to rotate. At this time, the contact ball 138 can rotate (rotate around the axis of the top support plate 104). An angle sensor is set at the position of the friction resistance sleeve 118 and the tube shaft 117 to detect the rotation angle of the tube shaft 117 (the rotation angle of the contact ball 138).

[0027] When the contact ball 138 moves to contact the workpiece, it causes the contact ball support rod 137 to tilt, resulting in movement between the movable ball head 144 and the movable ball head mounting plate 145. This causes the reflector 143 to tilt (no longer be horizontal). At this point, the angle between the light emitted by the laser emitter 140 and the reflector 143 is no longer perpendicular. Therefore, the light reflected by the reflector 143 cannot be reflected back to the laser emitter 140 along the original path, but instead deflects. This deflected light then illuminates the light sensor 141. When the light sensor 141 detects the change in light, it determines that the contact ball 138 is in contact with the workpiece, thus determining the current position of the contact ball 138. By repeatedly contacting the workpiece, the hole size information of the workpiece can be obtained.

Claims

1. A dimensional inspection device for piercing castings, characterized in that: The system includes a base (102), on which a top support plate (104) and a bottom support plate (105) are fixedly mounted via multiple support columns (101). A displacement assembly is provided between the top support plate (104) and the bottom support plate (105) to drive the detection unit to move. The detection unit includes a light-shielding cylinder (136), on which a conductive sliding block (135) and a movable ball head mounting plate (145) are fixedly mounted respectively at the bottom and top of the light-shielding cylinder (136). A light sensor (141) is fixedly mounted on the side of the conductive sliding block (135) inside the light-shielding cylinder (136) via a light-shielding plate (142). The center of the light sensor (141) and the light-shielding plate (142) are located at the same position. A circular through hole of the same diameter is provided. A movable ball head (144) is movably installed on the movable ball head mounting plate (145) through a ball joint connection. A contact ball (138) is fixedly installed on the movable ball head (144) through a contact ball support rod (137). A reflector (143) is fixedly installed inside the light shielding tube (136) of the movable ball head (144). The reflector (143) and the contact ball support rod (137) are coaxially engaged. A laser emitter (140) is embedded in the axial position of the conductive sliding block (135). The light emitted by the laser emitter (140) is irradiated onto the reflector (143) through the circular through hole of the light sensor (141) and the light shielding plate (142). The displacement assembly includes two parallel resistive sliding rods (130), wherein a conductive sliding block (135) slides in engagement with the resistive sliding rods (130). The resistive sliding rods (130) are fixedly mounted on a resistive sliding rod bracket (131), which is fixedly mounted on a tube shaft bracket (127). An actuating piston tube (129) is also fixedly mounted on the resistive sliding rod bracket (131). An actuating piston block (134) is slidably sealed inside the actuating piston tube (129). The actuating piston block (134) and the conductive sliding block (135) are fixedly engaged through a first force transmission rod (133) and a second force transmission rod (139). (139) forms a U-shaped frame; the outer surface of the first force transmission rod (133) is surrounded by a return spring (132) located inside the execution piston tube (129), and the two ends of the return spring (132) are fixedly engaged with the execution piston block (134) and the end of the execution piston tube (129); the other end of the execution piston tube (129) is fixedly connected to a pressure transmission pipe (128), and the end of the pressure transmission pipe (128) away from the execution piston tube (129) is fixed to the pipe shaft bracket (127). The pipe shaft bracket (127) is also fixedly installed with a pipe shaft (117) that rotates with the top support plate (104), and the pipe shaft (117) is connected to the inside of the pressure transmission pipe (128); A negative pressure rotating support plate (113) is rotatably mounted on the upper surface of the top support plate (104) and is concentrically mounted on the top support plate (104). A negative pressure rotating cylinder (115) and a counterweight (114) are fixedly mounted on the negative pressure rotating support plate (113). The negative pressure rotating cylinder (115) and the tube shaft (117) are rotated and sealed together. A counterweight negative pressure sealing piston (116) is provided inside the negative pressure rotating cylinder (115) in a sliding seal.

2. The dimensional inspection equipment for casting piercing according to claim 1, characterized in that: The contact ball support rod (137) and the contact ball (138) are fixedly coupled, and the contact ball support rod (137) and the movable ball head (144) are fixedly coupled in a way that is easy to disassemble. The conductive sliding block (135) is slidably mounted on the displacement assembly.

3. The dimensional inspection equipment for casting piercing according to claim 2, characterized in that: Two concentrically arranged central toothed rings (124) and edge toothed rings (126) are rotatably mounted on the bottom support plate (105). The central toothed rings (124) and edge toothed rings (126) are driven by two planetary gears (125). The two planetary gears (125) are rotatably mounted on the planetary gear support (121). The planetary gear support (121) is rotatably mounted on the top support plate (104). A ring electromagnet (122) is also fixedly mounted on the side of the top support plate (104) facing the bottom support plate (105). The ring electromagnet (122) is rotatably sleeved on the outer surface of the planetary gear support (121), and the planetary gear support (121) and the ring electromagnet (122) are magnetically engaged.

4. The dimensional inspection equipment for casting piercing according to claim 3, characterized in that: A gearbox (120) is fixedly mounted on the top support plate (104). A drive gear (123) is fixedly mounted on the input shaft of the gearbox (120). The drive gear (123) meshes with the central gear ring (124). A friction resistance sleeve (118) is fixedly mounted at the center of the upper surface of the top support plate (104). The top end of the tube shaft (117) passes through the friction resistance sleeve (118). The friction resistance sleeve (118) is used to squeeze the tube shaft (117) and increase the resistance of the tube shaft (117) rotating on the top support plate (104). The output shaft of the gearbox (120) is connected to the tube shaft (117) through a third transmission belt (119).

5. The dimensional inspection equipment for casting piercing according to claim 4, characterized in that: A central electric cylinder (108) is fixedly installed at the center of the base (102). Multiple edge tilt control electric cylinders (107) are arranged in a circular equidistant array on the outer side of the central electric cylinder (108). All edge tilt control electric cylinders (107) are fixedly installed on the base (102). The end of the telescopic rod of the central electric cylinder (108) is connected to the detection table (103) through a ball joint connector (109). The ends of the telescopic rods of all edge tilt control electric cylinders (107) are in contact with the detection table (103). Multiple hooks (106) are also provided on the upper surface of the detection table (103).

6. The dimensional inspection equipment for casting piercing according to claim 5, characterized in that: A drive motor (110) is also fixedly installed on the top support plate (104). The output shaft of the drive motor (110) is connected to the negative pressure rotating support plate (113) through the first transmission belt (111), and the output shaft of the drive motor (110) is connected to the edge toothed ring (126) through the second transmission belt (112).

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