Self-research equipment for mandrel detection

Abstract

The invention relates to the technical field of mandrel detection, and provides mandrel detection self-research equipment which comprises a frame, a movable seat is arranged on the inner side of the frame, a first sliding block is fixedly connected to the bottom of the movable seat, a fixed rod penetrating through the first sliding block is fixedly connected to the bottom end of the inner side of the frame, and the first sliding block is slidably connected with the fixed rod. A transfer mechanism is arranged on the inner side of the movable seat and comprises a rotating sleeve penetrating through the movable seat, the rotating sleeve is rotationally connected with the movable seat, a plurality of first air cylinders distributed around the rotating sleeve at equal angles are fixedly connected to one end of the outer side of the rotating sleeve, clamping blocks are fixedly connected to the output ends of the first air cylinders, and a driving part is arranged on the outer side of the movable seat; the top end of the movable seat is provided with a translation member, and one end of the frame is provided with a detection mechanism. Through the synergistic effect of the rotation mechanism and the translation mechanism, the problem of blind areas existing in traditional detection is solved, and dead-corner-free scanning can be carried out on the full length of the mandrel in the axis direction and 360 degrees in the circumferential direction.

Description

Technical Field

[0001] This invention relates to the field of mandrel testing technology, specifically to a self-developed mandrel testing device. Background Technology

[0002] As a core component of precision mechanical transmission systems, mandrels are widely used in high-precision equipment such as automotive gearboxes, aero engines, and industrial robots. Their geometric accuracy (such as coaxiality, cylindricity, and straightness) and surface quality (such as scratches, cracks, and corrosion) directly affect the transmission efficiency, lifespan, and operational stability of the equipment. Traditional mandrel inspection mainly suffers from the following drawbacks: First, manual inspection is inefficient: it relies on contact tools such as calipers and dial indicators, requires multiple clamping and manual rotation of the mandrel, and takes several minutes to inspect a single piece. It is also prone to missed inspections due to operator fatigue.

[0003] Second, fixed equipment has incomplete coverage: conventional automated testing equipment mostly uses static clamping, which can only perform spot checks on local areas of the mandrel. It is difficult to achieve full-length scanning along the axis and 360° circumference without blind spots, especially for complex structures such as stepped shafts and conical surfaces, which are prone to forming blind spots.

[0004] Third, surface contamination interferes with accuracy: During processing or storage, mandrels are prone to adhering to impurities such as cutting fluid residue and dust. Incomplete manual cleaning can lead to misjudgment in optical inspection, affecting the accuracy of defect identification.

[0005] While some automated equipment attempts to address these issues, they generally suffer from limitations such as limited functionality (e.g., only rotation or translation), insufficient flexibility (difficulty adapting to various mandrel specifications), and separation of cleaning and inspection (requiring additional pre-processing stations). Therefore, there is an urgent need to develop an integrated device that combines dynamic rotation and translation, adaptive clamping, online cleaning, and high-precision visual inspection to improve inspection efficiency, accuracy, and coverage. Summary of the Invention

[0006] This invention proposes a self-developed device for mandrel testing, which solves the problem of incomplete detection range coverage in existing testing equipment.

[0007] The technical solution of the present invention is as follows: A self-developed device for mandrel inspection includes a frame, a movable seat is provided on the inner side of the frame, a first slider is fixedly connected to the bottom of the movable seat, a fixed rod is fixedly connected to the bottom end of the inner side of the frame and passes through the first slider, the first slider and the fixed rod are slidably connected, a transfer mechanism is provided on the inner side of the movable seat, the transfer mechanism includes a rotating sleeve passing through the movable seat and rotatably connected to the movable seat, a plurality of first cylinders are fixedly connected to one end of the outer side of the rotating sleeve and are distributed at equal angles around the rotating sleeve, a clamping block for clamping the mandrel is fixedly connected to the output end of the plurality of first cylinders, a driving member for driving the rotating sleeve to rotate is provided on the outer side of the movable seat, a horizontal translation member is provided on the top end of the movable seat to drive the movable seat to move horizontally by cooperating with the rotation of the rotating sleeve, a cleaning member is provided on one end of the movable seat to clean the surface of the mandrel by cooperating with the rotation of the mandrel, and an inspection mechanism for inspecting the mandrel is provided on one end of the frame.

[0008] Preferably, the driving component includes a gear ring fixedly connected to one end of the rotating sleeve, a first fixing plate fixedly connected to the outer side of the movable seat, a motor fixedly mounted on one side of the first fixing plate, and a first gear fixedly connected to the output shaft of the motor, the first gear meshing with the gear ring.

[0009] Preferably, the translation component includes a second slider fixedly connected to the top of the movable seat, an internally threaded sleeve rotatably connected to the inner side of the second slider, a lead screw threaded through the internally threaded sleeve being threadedly connected to the inner side of the internally threaded sleeve, and the two ends of the lead screw being fixedly connected to the inner wall of the frame respectively.

[0010] Preferably, the lead screw and the fixed rod are arranged in parallel, and the lead screw and the fixed rod have the same length.

[0011] Preferably, the translation component further includes a second gear fixedly connected to the end of the internal threaded sleeve, the second gear meshing with the gear ring.

[0012] Preferably, the number of clamping blocks is three, and the clamping blocks have a V-shaped structure.

[0013] Preferably, one end of the inner side of the rotating sleeve is provided with a plurality of guide members that surround the rotating sleeve at equal angles. The guide members include a sleeve fixedly connected to the inner wall of the rotating sleeve, a sleeve rod slidably connected to one end of the sleeve, a mounting base fixedly connected to one end of the sleeve rod, and a guide wheel rotatably connected to the inner side of the mounting base that abuts against the outer wall of the mandrel.

[0014] Preferably, the guide further includes a limiting block fixedly connected to the other end of the sleeve rod, the limiting block being slidably connected to the inner wall of the sleeve, and a spring being sleeved on the inner side of the sleeve, one end of the spring abutting against the limiting block, and the other end of the spring abutting against the inner wall of the sleeve.

[0015] Preferably, the cleaning component includes a second fixing plate fixedly connected to the outside of the movable seat, a connecting frame fixedly connected to one side of the second fixing plate, a second cylinder fixedly connected to the end of the connecting frame, and a brush plate fixedly connected to the output end of the second cylinder. The brush part of the brush plate abuts against the outer wall of the spindle by translation.

[0016] Preferably, the detection mechanism includes a mounting bracket fixedly connected to the outside of the frame, a high-resolution industrial camera fixedly connected to the top of the inner side of the mounting bracket, and a lighting lamp fixedly connected to the bottom of the inner side of the mounting bracket.

[0017] The working principle and beneficial effects of this invention are as follows: 1. The rotating sleeve is driven by the drive component to rotate, which in turn drives the mandrel to rotate circumferentially, allowing the detection mechanism to capture defects on the entire circumferential surface of the mandrel. The translation component, driven by the gear ring, moves the movable seat horizontally along the fixed rod, which in turn drives the mandrel to translate axially, ensuring that the detection mechanism can scan different areas of the mandrel. Through the synergistic effect of the rotation and translation mechanisms, the blind zone problem in traditional detection is solved, and the entire length of the mandrel axis and 360° circumferential direction can be scanned without dead angles.

[0018] The one-button start of the motor enables synchronous rotation and translation of the mandrel, reducing manual intervention. The guide automatically centers when the mandrel is inserted, and the spring provides centripetal force to achieve pre-positioning of the mandrel, shortening the clamping time. The first cylinder drives the V-shaped clamping block to clamp at three points, achieving rapid positioning of the mandrel and reducing positioning time.

[0019] The second cylinder of the cleaning component drives the brush plate to contact the surface of the spindle, and the spindle rotates (achieved by the driving component) to automatically remove cutting fluid residue or dust, avoiding misjudgment. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of a self-developed mandrel testing device according to the present invention; Figure 2 This is a schematic diagram of the transfer mechanism of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the transfer mechanism of the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the structure of the driving component of the present invention; Figure 5 This is a schematic diagram of the translation component of the present invention; Figure 6 This is a schematic diagram of the structure of the guide component of the present invention; Figure 7 This is a schematic diagram of the cleaning component of the present invention; Figure 8 This is a schematic diagram of the detection mechanism of the present invention.

[0022] In the diagram: 1. Frame; 2. Movable seat; 3. First slider; 4. Fixed rod; 5. Mandrel; 6. Transfer mechanism; 61. Rotating sleeve; 62. First cylinder; 63. Clamping block; 64. Driving component; 641. Gear ring; 642. First fixed plate; 643. Motor; 644. First gear; 65. Translation component; 651. Second slider; 652. Internal threaded sleeve; 653. Lead screw; 654. Second gear; 66. Guide component; 661. Sleeve; 662. Sleeve rod; 663. Mounting seat; 664. Guide wheel; 665. Limiting block; 666. Spring; 67. Cleaning component; 671. Second fixed plate; 672. Connecting frame; 673. Second cylinder; 674. Brush plate; 7. Detection mechanism; 71. Mounting frame; 72. High-resolution industrial camera; 73. Lighting lamp. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figures 1-8 As shown, this embodiment proposes a self-developed device for mandrel testing, including a frame 1. A movable seat 2 is arranged inside the frame 1. A first slider 3 is fixedly connected to the bottom of the movable seat 2. A fixing rod 4, penetrating the first slider 3, is fixedly connected to the bottom end of the inner side of the frame 1. The first slider 3 and the fixing rod 4 are slidably connected. A transfer mechanism 6 is arranged inside the movable seat 2. The transfer mechanism 6 includes a rotating sleeve 61 penetrating the movable seat 2, which is rotatably connected to the movable seat 2. A plurality of rings surrounding the rotating sleeve 61 are fixedly connected to one end of the outer side of the rotating sleeve 61. The first cylinders 62 are distributed at an angle. The output ends of several first cylinders 62 are fixedly connected to clamping blocks 63 for clamping the mandrel 5. The outer side of the movable seat 2 is provided with a driving member 64 for driving the rotating sleeve 61 to rotate. The top of the movable seat 2 is provided with a horizontal translation member 65 that drives the movable seat 2 to move horizontally by cooperating with the rotation of the rotating sleeve 61. One end of the movable seat 2 is provided with a cleaning member 67 that cleans the surface of the mandrel 5 by cooperating with the rotation of the mandrel 5. One end of the frame 1 is provided with a detection mechanism 7 for detecting the mandrel 5.

[0025] The mandrel 5 to be tested is inserted into the rotating sleeve 61. Then, all the first cylinders 62 are controlled to make all the clamping blocks 63 clamp the mandrel 5 centripetally. Then, the drive unit 64 is activated to drive the rotating sleeve 61 to rotate, so that the clamping blocks 63 drive the mandrel 5 to rotate. At the same time, the translation unit 65 drives the movable seat 2 to move horizontally, so that the mandrel 5 can dynamically translate in the horizontal direction. This allows the detection mechanism 7 to detect different areas of the mandrel 5 along its axial direction. At the same time, the rotation of the mandrel 5 allows the detection mechanism 7 to detect different areas of the mandrel 5 around its circumference, thereby achieving all-round detection of the mandrel 5 and greatly improving the detection effect of the mandrel 5.

[0026] Furthermore, the driving component 64 includes a gear ring 641 fixedly connected to one end of the rotating sleeve 61, a first fixing plate 642 fixedly connected to the outer side of the movable seat 2, a motor 643 fixedly mounted on one side of the first fixing plate 642, and a first gear 644 fixedly connected to the output shaft of the motor 643, the first gear 644 meshing with the gear ring 641.

[0027] By starting the motor 643, the first gear 644 is driven to rotate, which in turn drives the gear ring 641 to rotate. The gear ring 641 then drives the rotating sleeve 61 to rotate synchronously, thereby causing the clamping block 63 to rotate the spindle 5. This allows the detection mechanism 7 to detect different areas of the spindle 5 in the circumference, greatly improving the detection range of the spindle 5.

[0028] Furthermore, the translation component 65 includes a second slider 651 fixedly connected to the top of the movable seat 2. The inner side of the second slider 651 is rotatably connected to an internal threaded sleeve 652 that passes through the second slider 651. The inner side of the internal threaded sleeve 652 is threadedly connected to a lead screw 653 that passes through the internal threaded sleeve 652. The two ends of the lead screw 653 are fixedly connected to the inner wall of the frame 1 respectively. The lead screw 653 is arranged parallel to the fixed rod 4, and the length of the lead screw 653 and the fixed rod 4 are the same. The end of the internal threaded sleeve 652 is fixedly connected to a second gear 654, which meshes with a gear ring 641.

[0029] By starting the motor 643, the first gear 644 is driven to rotate, which in turn drives the gear ring 641 to rotate. This causes the second gear 654 to rotate synchronously, resulting in relative rotation between the internal threaded sleeve 652 and the lead screw 653. Consequently, the internal threaded sleeve 652 translates along the axis of the lead screw 653, which in turn causes the second slider 651 to slide along the fixed rod 4. This allows the movable seat 2 to drive the rotating sleeve 61 to translate horizontally, enabling the mandrel 5 to dynamically translate horizontally. This allows the detection mechanism 7 to detect different areas along the axis of the mandrel 5. Simultaneously, the rotation of the mandrel 5 allows the detection mechanism 7 to detect different areas around the mandrel 5, thus achieving all-around detection of the mandrel 5 and greatly improving the detection effect.

[0030] Furthermore, there are three clamping blocks 63, and the clamping blocks 63 have a V-shaped structure.

[0031] The V-shaped structure design of the clamping block 63 allows it to clamp mandrels 5 of different sizes. The three clamping blocks 63 are used for three-point clamping, which keeps the mandrel 5 stable during the testing process.

[0032] Furthermore, a plurality of guide members 66 are provided at one end of the inner side of the rotating sleeve 61 at equal angles around the rotating sleeve 61. The guide member 66 includes a sleeve 661 fixedly connected to the inner wall of the rotating sleeve 61. A sleeve rod 662 is slidably connected to one end of the sleeve 661. A mounting base 663 is fixedly connected to one end of the sleeve rod 662. A guide wheel 664 that abuts against the outer wall of the spindle 5 is rotatably connected to the inner side of the mounting base 663. A limit block 665 is fixedly connected to the other end of the sleeve rod 662. The limit block 665 is slidably connected to the inner wall of the sleeve 661. A spring 666 is sleeved on the inner side of the sleeve 661. One end of the spring 666 abuts against the limit block 665, and the other end of the spring 666 abuts against the inner wall of the sleeve 661.

[0033] During the insertion of the mandrel 5 into the rotating sleeve 61, the end of the mandrel 5 contacts all the guide wheels 664. Under the elastic force of the spring 666, all the guide wheels 664 apply a centripetal force to the mandrel 5, so that the mandrel 5 can be accurately inserted into the center position of the rotating sleeve 61, thus achieving the pre-positioning of the mandrel 5. This is beneficial for the subsequent clamping block 63 to quickly position and clamp the mandrel 5, shortening the positioning time of the mandrel 5 and thus improving the detection efficiency.

[0034] Furthermore, the cleaning component 67 includes a second fixing plate 671 fixedly connected to the outside of the movable seat 2. A connecting frame 672 is fixedly connected to one side of the second fixing plate 671. A second cylinder 673 is fixedly connected to the end of the connecting frame 672. A brush plate 674 is fixedly connected to the output end of the second cylinder 673. The brush part of the brush plate 674 abuts against the outer wall of the spindle 5 by translation.

[0035] By controlling the second cylinder 673, the brush part of the brush plate 674 is made to abut against the outer wall of the spindle 5. The motor 643 is started to drive the first gear 644 to rotate, which in turn drives the gear ring 641 to rotate. The gear ring 641 drives the rotating sleeve 61 to rotate synchronously, which in turn drives the clamping block 63 to rotate the spindle 5. This causes the brush part of the brush plate 674 to slide relative to the spindle 5, so that the brush plate 674 removes the dust or impurities attached to the surface of the spindle 5, thus preventing the dust or impurities from affecting the detection results of the spindle 5.

[0036] Furthermore, the testing mechanism 7 includes a mounting bracket 71 fixedly connected to the outside of the frame 1, a high-resolution industrial camera 72 fixedly connected to the top of the inner side of the mounting bracket 71, and a lighting lamp 73 fixedly connected to the bottom of the inner side of the mounting bracket 71.

[0037] The high-resolution industrial camera 72 can accurately capture the size and defects of the mandrel 5, and the light 73 can illuminate the surface of the mandrel 5, making the captured image of the high-resolution industrial camera 72 clearer and more accurate.

[0038] Working principle: First, the mandrel 5 to be tested is inserted into the rotating sleeve 61. The end of the mandrel 5 abuts against all the guide wheels 664. Under the elastic force of the spring 666, all the guide wheels 664 apply a centripetal force to the mandrel 5, so that the mandrel 5 can be accurately inserted into the center position of the rotating sleeve 61, thus achieving the pre-positioning of the mandrel 5. Then, control all the first cylinders 62 to make all the clamping blocks 63 clamp the spindle 5 in a centripetal manner, and then start the motor 643 to drive the first gear 644 to rotate, so that the first gear 644 drives the gear ring 641 to rotate, so that the gear ring 641 drives the rotating sleeve 61 to rotate synchronously, thereby making the clamping blocks 63 drive the spindle 5 to rotate, so that the detection mechanism 7 can detect different areas of the spindle 5 in the circumference. Simultaneously, the gear ring 641 drives the second gear 654 to rotate, causing the internal threaded sleeve 652 to rotate relative to the lead screw 653. This causes the internal threaded sleeve 652 to translate along the axial direction of the lead screw 653, which in turn causes the second slider 651 to drive the movable seat 2 to slide along the fixed rod 4. This causes the movable seat 2 to drive the rotating sleeve 61 to translate horizontally, allowing the mandrel 5 to dynamically translate horizontally. This allows the detection mechanism 7 to detect different areas along the axial direction of the mandrel 5. In conjunction with the rotation of the mandrel 5, the detection mechanism 7 can also detect different areas around the mandrel 5, thus achieving all-round detection of the mandrel 5 and greatly improving the detection effect of the mandrel 5.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-developed device for mandrel testing, comprising a frame (1), characterized in that, A movable seat (2) is provided on the inner side of the frame (1). A first slider (3) is fixedly connected to the bottom of the movable seat (2). A fixed rod (4) is fixedly connected to the bottom end of the inner side of the frame (1) through the first slider (3). The first slider (3) is slidably connected to the fixed rod (4). A transfer mechanism (6) is provided on the inner side of the movable seat (2). The transfer mechanism (6) includes a rotating sleeve (61) through the movable seat (2). The rotating sleeve (61) is rotatably connected to the movable seat (2). A plurality of first cylinders (61) are fixedly connected to the outer end of the rotating sleeve (61) at equal angles around the rotating sleeve (61). 2) A clamping block (63) for clamping the spindle (5) is fixedly connected to the output end of several first cylinders (62). A driving member (64) for driving the rotating sleeve (61) to rotate is provided on the outside of the movable seat (2). A horizontal translation member (65) for driving the movable seat (2) to move horizontally is provided at the top of the movable seat (2) by cooperating with the rotation of the rotating sleeve (61). A cleaning member (67) for cleaning the surface of the spindle (5) by cooperating with the rotation of the spindle (5) is provided at one end of the movable seat (2). A detection mechanism (7) for detecting the spindle (5) is provided at one end of the frame (1).

2. The self-developed equipment for mandrel testing according to claim 1, characterized in that, The driving component (64) includes a gear ring (641) fixedly connected to one end of the rotating sleeve (61), a first fixing plate (642) fixedly connected to the outer side of the movable seat (2), a motor (643) fixedly installed on one side of the first fixing plate (642), and a first gear (644) fixedly connected to the output shaft of the motor (643), the first gear (644) meshing with the gear ring (641).

3. The self-developed equipment for mandrel testing according to claim 2, characterized in that, The translation component (65) includes a second slider (651) fixedly connected to the top of the movable seat (2). The inner side of the second slider (651) is rotatably connected to an internal threaded sleeve (652) that passes through the second slider (651). The inner side of the internal threaded sleeve (652) is threadedly connected to a lead screw (653) that passes through the internal threaded sleeve (652). The two ends of the lead screw (653) are fixedly connected to the inner wall of the frame (1) respectively.

4. The self-developed equipment for mandrel testing according to claim 3, characterized in that, The lead screw (653) is arranged parallel to the fixed rod (4), and the lead screw (653) and the fixed rod (4) have the same length.

5. The self-developed equipment for mandrel testing according to claim 3, characterized in that, The translation component (65) further includes a second gear (654) fixedly connected to the end of the internal threaded sleeve (652), the second gear (654) meshing with the gear ring (641).

6. The self-developed equipment for mandrel testing according to claim 1, characterized in that, The number of clamps (63) is three, and the clamps (63) have a V-shaped structure.

7. The self-developed equipment for mandrel testing according to claim 1, characterized in that, The inner end of the rotating sleeve (61) is provided with a plurality of guide members (66) that surround the rotating sleeve (61) at equal angles. The guide member (66) includes a sleeve (661) fixedly connected to the inner wall of the rotating sleeve (61). One end of the sleeve (661) is slidably connected to a sleeve rod (662). One end of the sleeve rod (662) is fixedly connected to a mounting base (663). The inner side of the mounting base (663) is rotatably connected to a guide wheel (664) that abuts against the outer wall of the spindle (5).

8. The self-developed equipment for mandrel testing according to claim 7, characterized in that, The guide (66) also includes a limiting block (665) fixedly connected to the other end of the sleeve (662). The limiting block (665) is slidably connected to the inner wall of the sleeve (661). A spring (666) is sleeved on the inner side of the sleeve (661). One end of the spring (666) abuts against the limiting block (665), and the other end of the spring (666) abuts against the inner wall of the sleeve (661).

9. The self-developed equipment for mandrel testing according to claim 1, characterized in that, The cleaning component (67) includes a second fixing plate (671) fixedly connected to the outside of the movable seat (2). A connecting frame (672) is fixedly connected to one side of the second fixing plate (671). A second cylinder (673) is fixedly connected to the end of the connecting frame (672). A brush plate (674) is fixedly connected to the output end of the second cylinder (673). The brush part of the brush plate (674) abuts against the outer wall of the spindle (5) by translation.

10. The self-developed equipment for mandrel testing according to claim 1, characterized in that, The detection mechanism (7) includes a mounting bracket (71) fixedly connected to the outside of the frame (1), a high-resolution industrial camera (72) fixedly connected to the top of the inner side of the mounting bracket (71), and a lighting lamp (73) fixedly connected to the bottom of the inner side of the mounting bracket (71).

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