A detection device suitable for precision forgings

Abstract

The present invention relates to the field of detection, and in particular to a detection device suitable for precision forgings. Existing forging detection devices lack adaptive clamping and matching trajectories, which can easily lead to posture deviation and signal instability, component shaking affecting tapping and collection, insufficient point tapping coverage, and incomplete defect identification. A detection device suitable for precision forgings, comprising a box; a positioning plate is installed on the top of the box, and an opening is opened on the top of the box. The present invention drives the roller to move through an electric slider, and the roller pushes the ladder frame to move vertically. Under the guidance of the roller, the ladder frame is pressed down stably, and the ladder frame drives the sliding frame to press down the frame to automatically press the forging body. At the same time, the two correction rollers actively correct the arc surfaces on both sides of the forging body, so that the forging maintains a standard posture before tapping, thereby ensuring the stable positioning and firm clamping of the forging during the detection process, effectively improving the tapping stability and the repeatability of the detection data, and providing a reliable basis for subsequent defect identification.

Description

Technical Field

[0001] The present invention relates to the field of detection, and in particular to a detection device suitable for precision forgings. Background Art

[0002] During the forging process, precision forgings may develop internal defects such as cracks, inclusions, and shrinkage holes due to factors such as uneven temperature control, insufficient stress release, or mold wear. If they are put into use directly without effective testing, they are very likely to cause serious consequences such as fracture and fatigue failure during service.

[0003] At present, the detection devices used for precision forging defect identification still have shortcomings in structural stability and detection consistency. The traditional clamping structure is difficult to adaptively correct according to the forging contour, which can easily lead to posture deviation and affect the tapping force and signal accuracy; the tapping mechanism is mostly linear sliding, lacking a guide track to match the contour, resulting in unstable impact angle and position, and poor signal repeatability; during the tapping process, components are prone to shaking or dislocation due to inertia, affecting the operation of the mechanism and data collection; at the same time, the point tapping coverage is limited, making it difficult to fully detect complex contour forgings, and there is a risk of missing defects. Summary of the Invention

[0004] In order to overcome the shortcomings of existing forging detection devices, such as the lack of adaptive clamping and matching trajectory, which easily leads to posture deviation and signal instability, component shaking affecting tapping and collection, insufficient point tapping coverage, and incomplete defect recognition, a detection device suitable for precision forgings is provided. Through adaptive clamping and correction structure, the forgings are kept in a standard posture before tapping, thereby improving the accuracy of signal collection and detection consistency; an arc guide rail matching the forging contour is adopted to guide the tapping hammer to impact along a constant path, ensuring strong repeatability and high representativeness of the excitation signal; the friction plate limit mechanism effectively suppresses component shaking, ensuring a stable and reliable tapping process; at the same time, the tapping hammer can realize multi-point scanning, expand the detection coverage, and improve the adaptability to complex contour forgings and the comprehensiveness of defect recognition.

[0005] The technical solution of the present invention is: a detection device suitable for precision forgings, including a box body, a positioning plate installed on the top of the box body, an opening on the top of the box body, an adaptive arc surface mechanism inside the box body, a knocking mechanism provided on the adaptive arc surface mechanism, and a downward pressing mechanism provided on the box body and the adaptive arc surface mechanism.

[0006] In addition, it is particularly preferred that the adaptive arc surface mechanism includes a guide rail, two guide rails are installed in the box, an electric slider is slidably provided on each guide rail, a guide sleeve is installed between the two electric sliders, a sliding plate is slidably provided on the guide sleeve, and a cross roller is rotatably provided on the sliding plate.

[0007] In addition, it is particularly preferred that guide grooves are respectively provided on the two side walls of the box body, each guide groove is composed of a straight groove and an arc groove, the two ends of the transverse roller are respectively located in the straight grooves of the two guide grooves, and the arc grooves of the guide grooves match the arc surface at the top of the forging body.

[0008] In addition, it is particularly preferred that the knocking mechanism includes a guide frame, a guide frame is installed on the top of the sliding plate, a guide block is slidably provided on the guide frame, a pneumatic impactor is installed on the guide block, and a knocking hammer is installed on the telescopic rod of the pneumatic impactor.

[0009] In addition, it is particularly preferred that the downward pressure mechanism includes a sliding frame, which is slidably arranged in the box body, and a number of vertical springs are connected between the sliding frame and the box body, four downward pressure frames are installed on the sliding frame, a frame is installed on the guide sleeve, and rollers are rotatably arranged on the frame, and a ladder frame is provided on the sliding frame, and the ladder frame is provided with a horizontal surface and an inclined surface, and the rollers are in contact with the inclined surface on the ladder frame.

[0010] In addition, it is particularly preferred that a correction roller is further included, and a correction roller is rotatably provided between every two lower pressing frames.

[0011] In addition, it is particularly preferred that it also includes a fixing mechanism, the fixing mechanism includes a friction plate, a friction plate is slidably provided on one side of the sliding plate, and two threaded rods are threadedly connected to the other side of the sliding plate, one end of the two threaded rods is rotatably connected to the friction plate, and the other ends of the two threaded rods are each installed with a driving gear, two rack racks are slidably provided on the guide frame, the two rack racks are respectively engaged with the two driving gears, two horizontal axes are rotatably provided on the two rack racks, a fixing bar is installed on the guide frame, a driving frame is slidably provided on the fixing bar, and a fixing block is installed on the telescopic rod of the pneumatic impactor, and the fixing block is slidably connected to the upper part of the driving frame.

[0012] In addition, it is particularly preferred that two inclined slots are provided on the driving frame, and the two transverse axes are respectively arranged in the two inclined slots of the driving frame.

[0013] Furthermore, it is particularly preferred that a side of the friction plate away from the two threaded rods is provided as a rough surface.

[0014] In addition, it is particularly preferred that it also includes a position adjustment mechanism, which includes a reciprocating nut, a reciprocating nut is installed at the bottom of the guide block, a reciprocating screw is rotatably provided on the guide frame, the reciprocating screw is connected to the reciprocating nut by a thread, an overrunning clutch is installed at both ends of the reciprocating screw, and a column gear is installed on each of the two overrunning clutches. A fixed rack is installed on both sides of the box body, and the two fixed racks are respectively engaged with the two column gears.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The present invention drives the roller to move through the electric slider, and the roller pushes the ladder frame to move vertically. Under the guidance of the roller, the ladder frame is pressed down stably, and the ladder frame drives the sliding frame to press down the forging body to complete the automatic pressing of the forging body. At the same time, the two correction rollers actively correct the arc surfaces on both sides of the forging body, so that the forging maintains a standard posture before knocking, thereby ensuring the stable positioning and firm clamping of the forging during the inspection process, effectively improving the knocking stability and the repeatability of the inspection data, and providing a reliable basis for subsequent defect identification.

[0016] 2. By setting the guide groove to an arc-shaped structure that matches the top contour of the forging body, the cross roller drives the pneumatic impactor and the hammer to slide along the arc path during the movement of the guide groove, so as to achieve uniform tapping of various positions on the top of the forging, so that each impact path is consistent, the angle is constant, and the force is controllable, ensuring that the collection of the excitation signal is accurate, stable and representative, effectively avoiding signal errors caused by changes in the tapping position or angle, thereby improving the ability to identify internal defects of the forging and the reliability of detection.

[0017] 3. The two racks drive the two driving gears and two threaded rods to rotate. The two threaded rods drive the friction plate to move and drive the friction plate to fit the guide sleeve, which can lock and limit the sliding plate, guide frame, guide block and percussion hammer as a whole to avoid shaking or misalignment of components during the percussion process. At the same time, under the drive of the overrunning clutch and reciprocating screw in conjunction with the column gear, the cross roller can realize intermittent movement of the percussion hammer in the horizontal direction, so that the percussion path is expanded from a single point to a multi-point scan, thereby improving the coverage of the overall area of ​​the forging and the percussion analysis effect, and effectively enhancing the applicability and comprehensiveness of the device under multiple shapes and working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the box, positioning plate and forging body of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the disassembled three-dimensional structure of the box body, positioning plate and forging body of the present invention.

[0021] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the adaptive cambered surface mechanism and the knocking mechanism of the present invention.

[0023] Figure 6 It is a schematic diagram of the disassembled three-dimensional structure of some parts of the adaptive cambered surface mechanism and the knocking mechanism of the present invention.

[0024] Figure 7 It is a schematic diagram of the disassembled three-dimensional structure of the pressing mechanism and some parts of the correction roller of the present invention.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixing mechanism of the present invention.

[0026] Figure 9 It is a schematic diagram of the three-dimensional structure of the fixing mechanism and the position adjustment mechanism of the present invention.

[0027] Figure 10 It is a schematic diagram of the three-dimensional structure of the knocking mechanism and the fixing mechanism of the present invention.

[0028] Figure 11 It is a schematic diagram of the three-dimensional structure of the position adjustment mechanism of the present invention.

[0029] Figure 12 It is a schematic diagram of the disassembled three-dimensional structure of some parts of the fixing mechanism of the present invention.

[0030] Figure 13 It is a schematic diagram of the cross-sectional three-dimensional structure of the position adjustment mechanism of the present invention.

[0031] Figure 14 It is a schematic diagram of the disassembled three-dimensional structure of some parts of the position adjustment mechanism of the present invention.

[0032] Among them, the above-mentioned drawings include the following figure marks: 1. box body, 2. positioning plate, 3. forging body, 41. guide rail, 42. electric slider, 43. guide sleeve, 44. sliding plate, 45. cross roller, 46. guide groove, 51. guide frame, 52. guide block, 53. pneumatic impactor, 54. knock hammer, 61. sliding frame, 62. vertical spring, 63. lower pressure frame, 64. shelf, 65. roller, 66. trapezoidal frame, 7. correction roller, 81. friction plate, 82. threaded rod, 83. driving gear, 84. rack frame, 85. horizontal shaft, 86. fixed bar, 87. driving frame, 88. fixed block, 91. reciprocating nut, 92. reciprocating screw, 93. overrunning clutch, 94. column gear, 95. fixed rack. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0034] Example 1: A detection device suitable for precision forgings, such as Figure 1-Figure 7As shown, it includes a box body 1, a positioning plate 2 is installed on the top of the box body 1, an opening is opened on the top of the box body 1, the forging body 3 is placed on the top of the box body 1 and one side is in contact with the positioning plate 2, an adaptive arc surface mechanism is provided inside the box body 1, a knocking mechanism for detection is provided on the adaptive arc surface mechanism, and the knocking component of the knocking mechanism is located in the opening on the top of the box body 1, and a downward pressing mechanism for fixing the forging body 3 is provided on the box body 1 and the adaptive arc surface mechanism.

[0035] The adaptive cambered surface mechanism includes a guide rail 41. Two guide rails 41 are installed in the box 1. An electric slider 42 is slidably provided on each guide rail 41. A guide sleeve 43 is installed between the two electric sliders 42. A sliding plate 44 is slidably provided on the guide sleeve 43. The sliding plate 44 slides up and down along the guide sleeve 43. A transverse roller 45 is rotatably provided on the sliding plate 44 through a bearing.

[0036] Guide grooves 46 are respectively provided on the two side walls of the box body 1. Each guide groove 46 consists of a straight groove and an arc groove. The two ends of the transverse roller 45 are respectively located in the straight grooves of the two guide grooves 46. The arc grooves of the guide grooves 46 match the arc surface of the top of the forging body 3.

[0037] The striking mechanism includes a guide frame 51, a guide frame 51 is installed on the top of the sliding plate 44, a guide block 52 is slidingly provided on the guide frame 51, a pneumatic impactor 53 is installed on the guide block 52, and a striking hammer 54 for striking the top of the forging body 3 is installed on the telescopic rod of the pneumatic impactor 53.

[0038] The pressing mechanism includes a sliding frame 61, which is slidably arranged in the box body 1. Four vertical springs 62 are connected between the sliding frame 61 and the box body 1. Four pressing frames 63 for pressing the forging body 3 are installed on the sliding frame 61. A frame 64 is installed on the guide sleeve 43. A roller 65 is rotatably arranged on the frame 64. A ladder frame 66 is provided on the sliding frame 61. The ladder frame 66 is provided with a horizontal surface and an inclined surface. The roller 65 is in contact with the inclined surface on the ladder frame 66.

[0039] It also includes a correction roller 7. A correction roller 7 is rotatably provided between each two lower pressing frames 63. After moving, the correction roller 7 contacts the arc surfaces on both sides of the forging body 3.

[0040] The operator places the forging body 3 on the top of the box 1 so that one side of the forging body 3 is in contact with the side wall of the positioning plate 2. The operator then controls the two electric slides 42 to move synchronously along the guide rail 41, driving the guide sleeve 43, the sliding plate 44, the cross roller 45, the guide frame 51, the guide block 52, the pneumatic impactor 53, the hammer 54, the frame 64 and the roller 65 to move as a whole. After the roller 65 moves along the inclined surface on the ladder frame 66 to the horizontal plane, the roller 65 pushes the ladder frame 66, the sliding frame 61 and the four lower pressure frames 63 to move downward as a whole, and the vertical spring 62 is compressed in the process; during the downward movement of the lower pressure frame 63, the two correction rollers 7 and the forging body are driven 3 on both sides of the arc contact to achieve the correction of the position of the forging body 3, then the lower pressing frame 63 continues to move downward and stably presses the forging body 3. At this time, the cross roller 45 is just located at the arc groove position in the guide groove 46, and the two electric slides 42 stop running intermittently. The two electric slides 42 drive the guide sleeve 43, the sliding plate 44, the cross roller 45, the guide frame 51, the guide block 52, the pneumatic impactor 53, the percussion hammer 54, the frame 64 and the roller 65 to stop intermittently. Under the guidance of the arc groove of the guide groove 46, the cross roller 45 drives the sliding plate 44, the guide frame 51, the guide block 52, the pneumatic impactor 53 and the percussion hammer 54 toward the direction close to the forging body 3. The operator starts the pneumatic impactor 53, and the telescopic rod drives the hammer 54 to strike the top of the forging body 3. Because the arc groove of the guide groove 46 matches the arc surface of the top of the forging body 3, the consistency of the striking stroke and the impact force is guaranteed, thereby improving the stability and accuracy of the detection result. After the striking is completed, the operator controls the two electric slides 42 to move in the opposite direction along the two guide rails 41. The two electric slides 42 drive the guide sleeve 43, the sliding plate 44, the cross roller 45, the guide frame 51, the guide block 52, the pneumatic impactor 53, the hammer 54, the frame 64 and the roller 65 to move in the opposite direction and reset. The roller 65 moves from the horizontal surface on the ladder frame 66 to the horizontal surface. After moving to the inclined surface on the ladder frame 66, under the action of the vertical spring 62, the sliding frame 61, the ladder frame 66 and the four lower pressure frames 63 move upward and reset, and the four vertical lower pressure frames 63 no longer press on the forging body 3. After completing the knocking operation on the forging body 3, it is taken out and placed in the subsequent detection equipment for inspection. By analyzing the response signal generated by the forging under the controlled impact, it can be determined whether there are cracks or defects caused by the impact inside its shell; the device ensures that the knocking position and force are consistent through the arc matching structure, avoiding the impact of unstable impact conditions on the detection accuracy, thereby realizing the evaluation of the structural integrity of the forging body 3.

[0041] Example 2: Based on Example 1, Figures 8-12As shown, it also includes a fixing mechanism arranged on the sliding plate 44, the guide frame 51 and the pneumatic impactor 53, the fixing mechanism includes a friction plate 81, a friction plate 81 is slidably provided on one side of the sliding plate 44, and two threaded rods 82 are threadedly connected to the other side of the sliding plate 44, one end of the two threaded rods 82 is rotatably connected to the friction plate 81, and the other end of the two threaded rods 82 is respectively installed with a driving gear 83, and two rack racks 84 are slidably provided on the guide frame 51, and the two rack racks 84 are respectively engaged with the two driving gears 83, and two horizontal shafts 85 are rotatably provided on the two rack racks 84, a fixing bar 86 is installed on the guide frame 51, and a driving frame 87 is slidably provided on the fixing bar 86, and a fixing block 88 is installed on the telescopic rod of the pneumatic impactor 53, and the fixing block 88 is slidably connected to the upper part of the driving frame 87.

[0042] The driving frame 87 is provided with two oblique slots, and the two transverse shafts 85 are respectively disposed in the two oblique slots of the driving frame 87 .

[0043] A side of the friction plate 81 away from the two threaded rods 82 is set as a rough surface. After the friction plate 81 moves, its rough surface contacts one side of the guide sleeve 43.

[0044] When the telescopic rod of the pneumatic impactor 53 is extended, it drives the fixed block 88 and the driving frame 87 to move upward, and the fixed bar 86 guides the driving frame 87. The two inclined grooves on the driving frame 87 drive the two horizontal shafts 85 and the two rack racks 84 to move in the direction of approaching each other, and the two rack racks 84 drive the two driving gears 83 and the two threaded rods 82 to rotate. The two threaded rods 82 drive the friction plate 81 to move. The rough surface of the friction plate 81 fits the guide sleeve 43 to lock the overall position of the sliding plate 44, the guide frame 51, the guide block 52, the pneumatic impactor 53 and the knocking hammer 54, thereby avoiding the deviation of the components during the knocking process and improving the knocking stability and detection accuracy. At this time, the two inclined grooves on the driving frame 87 are disengaged from the two horizontal shafts 85, and then the knocking hammer 54 knocks on the forging body 3 again, thereby making the knocking hammer 54 more stable during the knocking process. Improve the accuracy of detection; when the telescopic rod of the pneumatic impactor 53 is shortened, it drives the fixed block 88 and the driving frame 87 to move downward, and the fixed bar 86 guides the driving frame 87. After the two inclined grooves on the driving frame 87 move, they are again clamped in the two horizontal shafts 85. The two inclined grooves on the driving frame 87 drive the two horizontal shafts 85 and the two rack racks 84 to move away from each other and reset. The two rack racks 84 drive the two driving gears 83 and the two threaded rods 82 to rotate in the opposite direction. The two threaded rods 82 drive the friction plate 81 to move in the opposite direction. The rough surface of the friction plate 81 is out of contact with the guide sleeve 43, thereby loosening the fixation of the sliding plate 44, the guide frame 51, the guide block 52, the pneumatic impactor 53 and the knock hammer 54; thereby facilitating the vertical position of the sliding plate 44, the guide frame 51, the guide block 52, the pneumatic impactor 53 and the knock hammer 54 to be adjusted again by the electric slider 42.

[0045] Example 3: Based on Example 2, Figures 8-14 As shown, it also includes a position adjustment mechanism arranged on the box body 1, the guide frame 51 and the guide block 52. The position adjustment mechanism is used to adjust the position of the knocking mechanism. The position adjustment mechanism includes a reciprocating nut 91. A reciprocating nut 91 is installed at the bottom of the guide block 52. A reciprocating screw rod 92 is rotatably provided on the guide frame 51. The reciprocating screw rod 92 is connected to the reciprocating nut 91 through a threaded connection. An overrunning clutch 93 is installed at both ends of the reciprocating screw rod 92. A column gear 94 is installed on each of the two overrunning clutches 93. A fixed rack 95 is installed on both sides of the box body 1. The two fixed racks 95 are respectively engaged with the two column gears 94.

[0046] When the cross roller 45 moves from the straight groove on the guide groove 46 to the arc groove, the cross roller 45 drives the sliding plate 44, the reciprocating nut 91, the reciprocating screw 92, the overrunning clutch 93, the column gear 94, the guide frame 51, the guide block 52, the pneumatic impactor 53 and the knock hammer 54 to move synchronously, and under the cooperation of the two fixed racks 95, the two column gears 94 rotate; due to the limiting function of the overrunning clutch 93, the reciprocating screw 92 remains stationary at this stage; when the cross roller 45 moves from the arc groove on the guide groove 46 to the straight groove, the cross roller 45 drives the sliding plate 44, the reciprocating nut 91, the reciprocating screw 92, the overrunning clutch 93, the column gear 94, the guide frame 51, the guide block 52, the pneumatic impactor 53 and the knock hammer 54 to move in the opposite direction. , the two column gears 94 rotate in opposite directions under the action of the two fixed racks 95, and with the cooperation of the two overrunning clutches 93, the reciprocating screw 92 rotates at this stage, thereby driving the reciprocating nut 91, the guide block 52, the pneumatic impactor 53 and the knock hammer 54 to move synchronously, and the guide frame 51 guides the pneumatic impactor 53 in this process; through the above-mentioned cyclic action, the reciprocating screw 92 can be intermittently driven to rotate continuously in one direction, thereby driving the reciprocating nut 91, the guide block 52, the pneumatic impactor 53 and the knock hammer 54 to intermittently displace in the horizontal direction, thereby realizing intermittent adjustment of the positions of the pneumatic impactor 53 and the knock hammer 54, thereby expanding the knocking range and improving the coverage and uniformity of the detection area.

[0047] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A detection device suitable for precision forgings, characterized by: The invention comprises a box body (1), a positioning plate (2) is installed on the top of the box body (1), an opening is opened on the top of the box body (1), an adaptive arc surface mechanism is provided inside the box body (1), a knocking mechanism is provided on the adaptive arc surface mechanism, and a pressing mechanism is provided on the box body (1) and the adaptive arc surface mechanism; The adaptive cambered surface mechanism includes a guide rail (41), two guide rails (41) are installed in the box (1), an electric slider (42) is slidably provided on each of the two guide rails (41), a guide sleeve (43) is installed between the two electric sliders (42), a sliding plate (44) is slidably provided on the guide sleeve (43), and a transverse roller (45) is rotatably provided on the sliding plate (44); Guide grooves (46) are respectively provided on the two side walls of the box body (1), each guide groove (46) is composed of a straight groove and an arc groove, and the two ends of the transverse roller (45) are respectively located in the straight grooves of the two guide grooves (46), and the arc grooves of the guide grooves (46) match the arc surface of the top of the forging body (3); The striking mechanism includes a guide frame (51), a guide frame (51) is installed on the top of the sliding plate (44), a guide block (52) is slidably provided on the guide frame (51), a pneumatic impactor (53) is installed on the guide block (52), and a striking hammer (54) is installed on the telescopic rod of the pneumatic impactor (53); The pressing mechanism includes a sliding frame (61), the sliding frame (61) is slidably arranged in the box body (1), a plurality of vertical springs (62) are connected between the sliding frame (61) and the box body (1), four pressing frames (63) are installed on the sliding frame (61), a frame (64) is installed on the guide sleeve (43), a roller (65) is rotatably provided on the frame (64), a ladder frame (66) is provided on the sliding frame (61), a horizontal surface and an inclined surface are provided on the ladder frame (66), and the roller (65) contacts the inclined surface on the ladder frame (66).

2. A detection device suitable for precision forgings according to claim 1, characterized in that: It also includes a correction roller (7), and a correction roller (7) is rotatably provided between each two lower pressing frames (63).

3. A detection device for precision forgings according to claim 2, characterized in that: The invention also includes a fixing mechanism, which includes a friction plate (81), a friction plate (81) slidably provided on one side of the sliding plate (44), two threaded rods (82) are connected to the other side of the sliding plate (44) by a thread, one end of the two threaded rods (82) is rotatably connected to the friction plate (81), and the other end of the two threaded rods (82) is installed with a driving gear (83), two rack racks (84) are slidably provided on the guide frame (51), the two rack racks (84) are respectively engaged with the two driving gears (83), and two horizontal shafts (85) are rotatably provided on the two rack racks (84), a fixing bar (86) is installed on the guide frame (51), and a driving frame (87) is slidably provided on the fixing bar (86), and a fixing block (88) is installed on the telescopic rod of the pneumatic impactor (53), and the fixing block (88) is slidably connected to the upper part of the driving frame (87).

4. A detection device for precision forgings according to claim 3, characterized in that: Two inclined slots are provided on the driving frame (87), and the two transverse shafts (85) are respectively arranged in the two inclined slots of the driving frame (87).

5. A detection device for precision forgings according to claim 4, characterized in that: The side of the friction plate (81) away from the two threaded rods (82) is set as a rough surface.

6. A detection device for precision forgings according to claim 5, characterized in that: The invention also includes a position adjustment mechanism, which includes a reciprocating nut (91). A reciprocating nut (91) is installed at the bottom of the guide block (52). A reciprocating screw rod (92) is rotatably provided on the guide frame (51). The reciprocating screw rod (92) is connected to the reciprocating nut (91) through a thread. An overrunning clutch (93) is installed at both ends of the reciprocating screw rod (92). A column gear (94) is installed on each of the two overrunning clutches (93). A fixed rack (95) is installed on both sides of the box body (1). The two fixed racks (95) are respectively engaged with the two column gears (94).

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