Electrically powered loading head down-type rockwell hardness tester

Abstract

This invention relates to the technical field of hardness testers, and in particular to an electric loader head-type Rockwell hardness tester, comprising a hardness tester main body, a loader head body, and an adjustment table. The adjustment table has an external mounting platform for placing the workpiece. Side plates are provided on both sides of the mounting platform, and two connecting beams are provided between the two side plates. Each side plate has an adaptive sliding clamping assembly, and each adaptive sliding clamping assembly includes several elastic clamping components. This invention uses the preload of a transverse spring to drive the pressure rod to slide independently, allowing the rubber pad to automatically adapt and adjust the feed stroke and clamping position according to the irregular side contour of the irregular workpiece, forming a distributed multi-point contact constraint. This achieves rapid self-centering positioning of irregular workpieces, adapting to workpieces of different contours without manual tooling adjustment, significantly improving the clamping efficiency and positioning stability of irregular workpieces.

Description

Technical Field

[0001] This invention relates to the technical field of hardness testers, and in particular to a Rockwell hardness tester with an electrically powered loader head. Background Technology

[0002] In the process of hardness testing of workpieces, irregularly shaped workpieces, due to their irregular side contours and varied surface textures, often present challenges in achieving rapid and stable fixation using traditional clamping methods. Existing technologies often employ general-purpose fixtures or manually adjustable tooling, requiring repeated adjustments to the clamping position during operation. This not only results in low clamping efficiency but also makes it difficult to ensure consistent fit between multiple points and the workpiece contour, easily leading to lateral movement or deflection of the workpiece during testing, affecting positioning accuracy and the reliability of test data. Especially for batches of various types of irregularly shaped workpieces, frequent tooling changes or manual adjustments further increase operational complexity and time costs. Therefore, there is an urgent need for a clamping structure that can automatically adapt the clamping position according to the side contour of the irregularly shaped workpiece and achieve rapid self-centering positioning to improve the clamping efficiency and positioning stability of hardness testing of irregularly shaped workpieces. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides an electric loading head-type Rockwell hardness tester.

[0004] To solve the above technical problems, the present invention provides the following technical solution: an electric loader head type Rockwell hardness tester, including a hardness tester main unit, an external loader head body for testing, an adjustment table below the external part of the loader head body, the adjustment table being fixedly connected to the external part of the hardness tester main unit, a mounting table for placing workpieces being provided outside the adjustment table, the mounting table being located below the loader head body, side plates being provided on both sides of the mounting table, an external plate being fixedly connected to both sides of each side plate, two connecting beams being provided between the two side plates, the two connecting beams being fixedly connected to the external parts of the two side plates, the two side plates being synchronously connected through the two connecting beams, an adaptive sliding clamping assembly for fixing the workpiece being provided outside each side plate, each adaptive sliding clamp... Each holding component includes several elastic clamping components. Each elastic clamping component includes a sliding groove and a pressing rod. The sliding groove is located on the outside of the side platform. A rubber pad is fixedly connected to one end of the pressing rod near the center of the mounting platform. A limiting ring plate is fixedly connected to the other end of the pressing rod away from the rubber pad. The limiting ring plate is movably connected inside the sliding groove. The movement of the limiting ring plate inside the sliding groove limits the movement of the pressing rod, allowing the pressing rod and the rubber pad to move laterally stably. A movable long rod is fixedly connected to the other end of the limiting ring plate away from the pressing rod. The movable long rod moves through the side platform and extends outward. A tail stop plate is fixedly connected to the other end of the movable long rod away from the limiting ring plate. The tail stop plate is used to limit the maximum movement distance of the movable long rod. A transverse spring is movably sleeved on the outside of the movable long rod. One end of the transverse spring is fixedly connected to the outside of the limiting ring plate, and the other end of the transverse spring is fixedly connected to the outside of the side platform.

[0005] As a preferred embodiment of the present invention, a plurality of elastic clamping assemblies are synchronously locked by a fixing assembly. The fixing assembly includes an outer slot, which is located above the outside of the side platform. A clamping plate, matching the number of elastic clamping assemblies, is movably connected inside the outer slot. The lower end of the clamping plate is arc-shaped and fits against the movable long rod. A synchronous lifting plate is fixedly connected to the upper end of the clamping plates. The synchronous lifting plate controls the upward or downward movement of the clamping plates within the outer slot. A frustum plate is fixedly embedded outside the synchronous lifting plate. A vertical beam plate is provided outside the frustum plate and is fixedly connected above the outside of the side platform, positioned above the outer slot. The vertical beam plate is U-shaped. The beam plate is externally threaded with an upper screw rod. The upper end of the upper screw rod is fixedly connected to a rotating disk. The lower end of the upper screw rod spirally passes through the frustum plate and extends into the interior of the frustum plate, where it is fixedly connected to a rotating circular plate. The rotating circular plate is movably connected inside the frustum plate. The spiral motion of the upper screw rod on the outside of the vertical beam plate drives the rotating circular plate to rotate synchronously inside the frustum plate. The spiral motion of the upper screw rod also drives the frustum plate to move vertically upward or downward inside the vertical beam plate. Limiting vertical posts are set on both sides of the synchronous lifting plate. The limiting vertical posts have vertical slots inside. The two limiting vertical posts are fixedly connected to both sides of the side platform plate. The two ends of the synchronous lifting plate are movably connected to the vertical slots of the limiting vertical posts. The vertical movement of the synchronous lifting plate is further limited by the two limiting vertical posts.

[0006] As a preferred embodiment of the present invention, each side plate is externally provided with an assistive component for positioning several elastic clamping assemblies. The assistive component includes two side beams, which are respectively fixedly connected to the two sides of the side plate. A transverse slot is formed on the facing side of each side beam, and a short plate is slidably connected inside each transverse slot. A synchronous top plate is fixedly connected to the facing side of each of the two short plates. The synchronous top plate is located on the side of the limiting ring plate near the center of the mounting platform, and the synchronous top plate is in contact with the surface of the limiting ring plate. The synchronous top plate moves stably laterally through the limiting of the two short plates. A convenient... The grabbing long grab plate and the assisting component also include a rotating seat, a rotating handle, and a stake. The rotating seat is fixedly connected to the outside of one side of the short plate, and the rotating handle is rotatably connected to the outside of the rotating seat. The center of the outside of the rotating handle has an opening. The stake is fixedly connected to the outside of one side of the side beam plate. When the short plate is moved synchronously by the synchronous top plate, the movement of the short plate causes the rotating seat and the rotating handle to move synchronously. When the rotating handle is moved by the rotating seat to the position outside the stake, the rotating handle is rotated around the rotating seat, and the center hole of the rotating handle is rotated to fit into the outside of the stake, thereby achieving the effect of locking the synchronous top plate.

[0007] As a preferred embodiment of the present invention, lifting components for adjusting the height of the side platform are provided on both sides of the fixed assembly platform. Each lifting component includes a base plate, which is fixedly connected to the outside of the fixed assembly platform. The side platform is movably connected to the upper part of the base plate. Both sides of the base plate are fixedly connected to protruding plates. A vertical rod is fixedly connected to the outside of the protruding plate. The end of the vertical rod away from the protruding plate movably passes through the outer plate and extends outward. The side platform can be adjusted upward or downward through the outer plate, the vertical rod and the protruding plate. An extrusion plate and a bottom screw are provided on the outside of the base plate. The upper end of the bottom screw spirally passes through the base plate and extends upward outward. The upper end of the bottom screw is rotatably connected to the inside of the extrusion plate. The upper end of the bottom screw is T-shaped. A ring plate is fixedly connected to the lower end of the bottom screw.

[0008] Compared with the prior art, the beneficial effects of this invention are as follows: By setting an adaptive sliding clamping component and cooperating with multiple independently set elastic clamping components, the invention utilizes the preload of the transverse spring to drive the pressure rod to slide independently, enabling the rubber pad to automatically adapt and adjust the feed stroke and clamping position according to the irregular side contour of the irregular workpiece, forming a distributed multi-point contact constraint. This achieves rapid self-centering positioning of irregular workpieces, allowing for adaptation to workpieces with different contours without manual tooling adjustment. It effectively limits the lateral movement and deflection of the workpiece during clamping and inspection, significantly improving the clamping efficiency and positioning stability of irregular workpieces.

[0009] This invention uses a fixed assembly and a rotating upper screw to drive a synchronous lifting plate and several pressing plates to move downwards in sync. This applies vertical friction and pressure to the surface of the movable rod, achieving rapid locking of the lateral position of the movable rod. This, in turn, locks the pressure rod and the rubber pad simultaneously, changing the contact between the rubber pad and the workpiece from elastic to rigid. This ensures a stable and reliable clamping state during the testing process, and the operation is simple and efficient.

[0010] By setting up a lifting assembly, the vertical height of the side platform can be precisely controlled, thereby driving multiple sets of pressure rods and rubber pads on the side platform to rise and fall synchronously. This ensures that the clamping and contact position of the rubber pads is precisely aligned with the center height of the side of the workpiece to be tested. This not only ensures that the clamping force is applied evenly along the center of the workpiece side, avoiding warping, overturning, or deflection during the testing process due to the clamping point being too high or too low, but also allows for the adaptation of irregularly shaped workpieces of different thicknesses and heights, greatly expanding the workpiece adaptability range of the equipment and ensuring the clamping stability and accuracy of the test data during the hardness testing process.

[0011] This invention, by setting up an assisting component, allows all limiting ring plates and pressure rods to retract synchronously at once by a synchronous top plate. Combined with the quick-locking structure of the rotating handle and the insertion stake, it achieves synchronous pre-fixation of multiple sets of elastic clamping components, greatly simplifying the preparation operations before clamping irregularly shaped workpieces and providing sufficient and stable operating space for the rapid placement of workpieces. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main body of the hardness tester of the present invention.

[0013] Figure 2 This is a schematic diagram of the mounting platform of the present invention.

[0014] Figure 3 This is a partial structural diagram of the mounting platform of the present invention.

[0015] Figure 4 This is a schematic diagram of the structure of the pressure bar of the present invention.

[0016] Figure 5 This is a schematic diagram of the assembled structure of the workpiece of the present invention.

[0017] Figure 6 This is a schematic diagram of the connecting beam structure of the present invention.

[0018] Figure 7 This is a schematic diagram of the side platform of the present invention.

[0019] Figure 8 This is a schematic diagram of the rotating disk of the present invention.

[0020] Figure 9 This is a schematic diagram of the structure for placing the base plate of the present invention.

[0021] Figure 10 This is a partial structural diagram of the extrusion disc of the present invention.

[0022] The components include: 10. Hardness tester main unit; 11. Down-pressing loader head body; 12. Adjustment table; 13. Mounting table; 14. Side table plate; 15. Connecting crossbeam; 16. External plate; 20. Slide groove; 21. Pressing rod; 22. Rubber pad; 23. Movable long rod; 24. Tail stop plate; 25. Transverse spring; 26. Limiting ring plate; 30. Side beam plate; 31. Transverse groove; 32. Short plate; 33. Same as above. 34. Top plate; 35. Long grab plate; 36. Rotating seat; 37. Rotating handle; 40. Inserted pile; 41. Vertical beam plate; 42. Frustum plate; 43. Rotating disc; 44. Upper screw; 45. Rotating circular plate; 46. Synchronous lifting plate; 47. Tightening plate; 48. Limiting vertical pile; 50. Outer groove; 51. Placement base plate; 52. Vertical long rod; 53. Protruding plate; 54. Extrusion disc; 55. Bottom screw; 56. Ring disc. Detailed Implementation

[0023] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0024] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, an electric loader head-type Rockwell hardness tester includes a hardness tester main unit 10. A loader head body 11 for testing is disposed outside the hardness tester main unit 10. An adjustment table 12 is disposed below the loader head body 11 and is fixedly connected to the outside of the hardness tester main unit 10. A mounting platform 13 for placing workpieces is disposed outside the adjustment table 12, located below the loader head body 11. The mounting platform 13 has two sides on its exterior. Each side platform 14 is provided, and an outer plate 16 is fixedly connected to both sides of the outer side of each side platform 14. Two connecting beams 15 are provided between the two side platform 14, and the two connecting beams 15 are respectively fixedly connected to the outer side of the two side platform 14. The two side platform 14 are synchronously connected through the two connecting beams 15. Each side platform 14 is provided with an adaptive sliding clamping assembly for fixing the workpiece. Each adaptive sliding clamping assembly includes several elastic clamping components, each elastic... Each clamping assembly includes a sliding groove 20 and a pressing rod 21. The sliding groove 20 is located outside the side platform 14. A rubber pad 22 is fixedly connected to one end of the pressing rod 21 near the center of the mounting platform 13, and a limiting ring plate 26 is fixedly connected to the other end of the pressing rod 21 away from the rubber pad 22. The limiting ring plate 26 is movably connected inside the sliding groove 20. The movement of the limiting ring plate 26 within the sliding groove 20 limits the movement of the pressing rod 21, ensuring stable lateral movement between the pressing rod 21 and the rubber pad 22. A movable long rod 23 is fixedly connected to the end of the movable long rod 23 away from the pressure rod 21. The movable long rod 23 moves through the side platform 14 and extends outward therefrom. A tail stop plate 24 is fixedly connected to the end of the movable long rod 23 away from the limiting ring plate 26. The tail stop plate 24 is used to limit the maximum movement distance of the movable long rod 23. A transverse spring 25 is movably sleeved on the outside of the movable long rod 23. One end of the transverse spring 25 is fixedly connected to the outside of the limiting ring plate 26, and the other end of the transverse spring 25 is fixedly connected to the outside of the side platform 14.

[0025] The workpiece to be inspected is placed on the upper surface of the mounting table 13, and the workpiece is located in the inspection position directly below the main body 11 of the downward-pressing loading head. Two sets of adaptive sliding clamping assemblies symmetrically arranged on both sides of the mounting table 13 move synchronously. The transverse springs 25 in each elastic clamping assembly release their pre-tightening force, applying a transverse thrust toward the center of the mounting table 13 to the limiting ring plate 26. This, in turn, drives the pressure rod 21 to move synchronously laterally along the guide direction of the slide groove 20 through the limiting ring plate 26, so that the rubber pad 22 at the front end of the pressure rod 21 is in contact with the side surface of the workpiece. Due to the elastic force of each spring... The clamping rods 21 of the clamping assembly are independently sliding. When facing the irregular side contour of the irregular workpiece, each clamping rod 21 can automatically adapt and adjust the feed stroke and clamping position according to the concave and convex state of the corresponding position of the workpiece. Through multiple sets of rubber pads 22, a distributed multi-point contact constraint is formed with the side surface of the workpiece. This not only realizes the rapid self-centering positioning of the irregular workpiece, which can adapt to workpieces with different contours without manual adjustment of the tooling, but also effectively restricts the lateral movement and deflection of the workpiece during clamping and inspection, greatly improving the clamping efficiency and positioning stability of the irregular workpiece.

[0026] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, several elastic clamping components are synchronously locked by a fixing component. The fixing component includes an outer slot 48, which is located above the outside of the side platform 14. A clamping plate 46, matching the number of elastic clamping components, is movably connected inside the outer slot 48. The lower end of the clamping plate 46 is arc-shaped and fits against the movable long rod 23. A synchronous lifting plate 45 is fixedly connected to the upper end of the clamping plates 46. The synchronous lifting plate 45 controls the upward or downward movement of the clamping plates 46 within the outer slot 48. A frustum plate 41 is fixedly embedded outside the synchronous lifting plate 45. A vertical beam plate 40 is provided outside the frustum plate 41, fixedly connected above the outside of the side platform 14 and located above the outer slot 48. The vertical beam plate 40 is U-shaped and has external threads connecting to... An upper screw 43 is connected to the upper end of which a rotating disk 42 is fixedly connected. The lower end of the upper screw 43 spirally passes through the frustum plate 41 and extends into the interior of the frustum plate 41, where it is fixedly connected to a rotating circular plate 44. The rotating circular plate 44 is movably connected to the interior of the frustum plate 41. The spiral motion of the upper screw 43 outside the vertical beam plate 40 drives the rotating circular plate 44 to rotate synchronously inside the frustum plate 41. The spiral motion of the upper screw 43 also drives the frustum plate 41 to make vertical upward or downward movements inside the vertical beam plate 40. Limiting vertical posts 47 are provided on both sides of the synchronous lifting plate 45. The limiting vertical posts 47 have vertical slots inside. The two limiting vertical posts 47 are fixedly connected to both sides of the side platform 14. The two ends of the synchronous lifting plate 45 are movably connected to the vertical slots of the limiting vertical posts 47. The vertical movement of the synchronous lifting plate 45 is further limited by the two limiting vertical posts 47.

[0027] By placing the workpiece outside the mounting table 13 and positioning it by the contact between the rubber pad 22 and the pressing rod 21, the upper screw 43 is screwed downward by rotating the rotating disk 42. The upper screw 43 drives the rotating circular plate 44 and causes the truncated disc 41 to move downward synchronously. The truncated disc 41 drives the synchronous lifting plate 45 and causes several pressing plates 46 to move downward synchronously. The pressing plates 46 press down on the surface of the movable long rod 23 and vertically rub and press the movable long rod 23, thereby fixing the lateral position of the movable long rod 23 and locking the pressing rod 21 and the rubber pad 22 synchronously, so that the contact between the rubber pad 22 and the workpiece becomes a rigid contact.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, each side platform 14 is externally equipped with an assistive component for positioning several elastic clamping assemblies. The assistive component includes two side beams 30, which are fixedly connected to the two sides of the side platform 14. Each of the two side beams 30 has a transverse slot 31 on its facing side. A short plate 32 is slidably connected inside each transverse slot 31. A synchronous top plate 33 is fixedly connected to the facing side of each of the two short plates 32. The synchronous top plate 33 is located on the side of the limiting ring plate 26 near the center of the mounting platform 13, and it is in contact with the surface of the limiting ring plate 26. The synchronous top plate 33 moves laterally stably through the limiting effect of the two short plates 32. A long gripping plate 34 for easy gripping is fixedly connected to the outside of the synchronous top plate 33. The assembly also includes a rotating base 35, a rotating handle 36, and a stake 37. The rotating base 35 is fixedly connected to the outside of a short plate 32 on one side, and the rotating handle 36 is rotatably connected to the outside of the rotating base 35. The center of the outside of the rotating handle 36 is provided with an opening. The stake 37 is fixedly connected to the outside of a side beam plate 30 on one side. When the short plate 32 is moved synchronously by the synchronous top plate 33, the movement of the short plate 32 causes the rotating base 35 and the rotating handle 36 to move synchronously. When the rotating handle 36 is moved by the rotating base 35 to the position outside the stake 37, the rotating handle 36 is rotated around the rotating base 35, and the center hole of the rotating handle 36 is rotated to fit into the outside of the stake 37, thereby achieving the effect of locking the synchronous top plate 33.

[0029] The long gripper 34 is applied with a lateral driving force, which drives the synchronous top plate 33 to move smoothly laterally along the side platform 14 and away from the center of the fixed mounting table 13. During the translation of the synchronous top plate 33, the short plates 32 fixed at both ends slide synchronously along the transverse grooves 31 on the corresponding side beam plates 30, providing a straight guide for the synchronous top plate 33 throughout the entire process, avoiding deflection during the translation and ensuring consistent action. When the synchronous top plate 33 is translated, its plate body is tightly attached to the end face of the limiting ring plate 26 in each elastic clamping assembly, thereby pushing all the limiting ring plates 26 to move laterally synchronously. Through the limiting ring plates 26, the movable long rod 23 and the pressing rod 21 fixed to them are synchronously retracted, so that multiple sets of pressing rods 21 can simultaneously give up the workpiece placement space above the fixed mounting table 13 at one time. There is no need to adjust each pressing rod 21 one by one, which greatly simplifies the preparation operation before clamping irregular workpieces.

[0030] While the synchronous top plate 33 moves horizontally, the rotating seat 35 and rotating handle 36 are moved laterally through the short plate 32 on one side until the center opening of the rotating handle 36 is completely aligned with the position of the stake 37 on the side beam plate 30. At this time, the rotating handle 36 is rotated around the rotating seat 35 as the axis, so that the center opening of the rotating handle 36 is precisely fitted into the outside of the stake 37. The circumferential and lateral limits of the rotating handle 36 by the stake 37 are used to lock the position of the synchronous top plate 33, thereby pre-fixing all the retracted pressure rods 21 to the side platform 14, providing sufficient and stable operating space for the rapid placement of the workpiece.

[0031] See Figure 2 , Figure 5 , Figure 9 and Figure 10 Both sides of the fixed assembly platform 13 are equipped with lifting components for adjusting the height of the side platform 14. Each lifting component includes a base plate 50, which is fixedly connected to the outside of the fixed assembly platform 13. The side platform 14 is movably connected to the top outside the base plate 50. Both sides of the base plate 50 are fixedly connected with protruding plates 52. A vertical rod 51 is fixedly connected to the outside of the protruding plate 52. The end of the vertical rod 51 away from the protruding plate 52 movably passes through the outer plate 16 and extends outward. The side platform 14 can be adjusted upward or downward through the outer plate 16, the vertical rod 51 and the protruding plate 52. The base plate 50 is equipped with an extrusion plate 53 and a bottom screw 54. The upper end of the bottom screw 54 spirally passes through the base plate 50 and extends upward outward. The upper end of the bottom screw 54 is rotatably connected to the inside of the extrusion plate 53. The upper end of the bottom screw 54 is T-shaped. The lower end of the bottom screw 54 is fixedly connected to a ring plate 55.

[0032] The operator rotates the ring disc 55, causing the bottom screw 54, which is fixed to it, to make a spiral feeding motion in the threaded hole of the base plate 50, so that the bottom screw 54 is raised smoothly in the vertical direction. During the lifting process of the bottom screw 54, the extrusion disc 53 is moved upward synchronously through the T-shaped rotating connection structure at its upper end, so that the upper surface of the extrusion disc 53 is closely attached to the bottom surface of the side plate 14 and continuously applies an upward lifting force, pushing the side plate 14 to move upward as a whole. During the lifting and lowering of the side plate 14, the guide holes of the outer plates 16 at both ends slide synchronously along the corresponding vertical rods 51. Through the straight guidance of the vertical rods 51 throughout the entire process, it is ensured that the side plate 14 always maintains a horizontal state during lifting and lowering, without deflection or jamming, and ensures that the adaptive sliding clamping components arranged symmetrically on both sides lift and lower synchronously, with the clamping height being completely consistent.

[0033] By setting up a lifting assembly, the vertical height of the side platform 14 can be precisely controlled, thereby driving multiple sets of pressure rods 21 and rubber pads 22 on the side platform 14 to rise and fall synchronously, so that the clamping and contact position of the rubber pads 22 is precisely aligned with the center height of the side of the workpiece to be tested. This ensures that the clamping force is applied evenly along the center of the side of the workpiece, avoiding warping, overturning, or deflection during the testing process caused by the clamping point being too high or too low. It can also adapt to irregularly shaped workpieces of different thicknesses and heights, greatly expanding the workpiece adaptability range of the equipment and ensuring the clamping stability and accuracy of the test data during the hardness testing process.

[0034] Working principle: In use: First, place the workpiece to be inspected on the upper surface of the mounting table 13, with the workpiece positioned directly below the main body 11 of the pressing loader. Two sets of adaptive sliding clamping components symmetrically arranged on both sides of the mounting table 13 move synchronously. The transverse springs 25 in each elastic clamping component release the pre-tightening force, applying a transverse thrust toward the center of the mounting table 13 to the limiting ring plate 26. Then, the limiting ring plate 26 drives the pressure rod 21 to move synchronously laterally along the guide direction of the slide groove 20, so that the rubber pad 22 at the front end of the pressure rod 21 fits against the side surface of the workpiece. Since the pressure rods 21 of each elastic clamping component are independently sliding, when facing the irregular side contour of the irregular workpiece, each pressure rod 21 can automatically adapt and adjust the feed stroke and clamping position according to the concave and convex state of the corresponding position of the workpiece. Multiple sets of rubber pads 22 form a distributed multi-point contact constraint with the side surface of the workpiece.

[0035] In the second step, after the workpiece is positioned, the rotating disk 42 drives the upper screw 43 to feed downwards in a spiral motion. The rotating circular plate 44 drives the circular frustum plate 41 and the synchronous lifting plate 45 to move downwards vertically in sync. This causes multiple sets of clamping plates 46 to press down on the surfaces of all movable long rods 23 in sync. The lateral position of the movable long rods 23 is locked by vertical friction and clamping, which in turn locks the pressure rod 21 and the rubber pad 22 in sync. This changes the contact between the rubber pad 22 and the workpiece from elastic contact to rigid contact, providing a stable rigid clamping support for hardness testing.

[0036] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A Rockwell hardness tester with an electric loader head, comprising a hardness tester main unit (10), a loader head body (11) for testing is disposed outside the hardness tester main unit (10), and an adjustment table (12) is disposed below the outside of the loader head body (11), the adjustment table (12) being fixedly connected to the outside of the hardness tester main unit (10), characterized in that, The external of the control table (12) is provided with a fixed mounting table (13) for placing workpieces. Side table plates (14) are provided on both sides of the fixed mounting table (13). An external plate (16) is fixedly connected to both sides of each side table plate (14). Two connecting beams (15) are provided between the two side table plates (14). An adaptive sliding clamping assembly for fixing the workpiece is provided on the outside of each side table plate (14). Each adaptive sliding clamping assembly includes several elastic clamping assemblies. Each elastic clamping assembly includes a sliding groove (20) and a pressing rod (21). The sliding groove (20) is opened on the outside of the side plate (14). A rubber pad (22) is fixedly connected to one end of the pressing rod (21) near the center of the mounting table (13). A limiting ring plate (26) is fixedly connected to one end of the pressing rod (21) away from the rubber pad (22). The limiting ring plate (26) is movably connected inside the sliding groove (20). A movable long rod (23) is fixedly connected to one end of the limiting ring plate (26) away from the pressing rod (21). The movable long rod (23) movably passes through the side plate (14) and extends outward. A tail stop plate (24) is fixedly connected to one end of the movable long rod (23) away from the limiting ring plate (26). A transverse spring (25) is movably sleeved on the outside of the movable long rod (23). Several elastic clamping components are synchronously locked by a fixing component.

2. The Rockwell hardness tester with electric loader head downward pressure according to claim 1, characterized in that, The fixing component includes an outer slot (48), which is located above the outside of the side plate (14). The outer slot (48) is movably connected to a clamping plate (46) that matches the number of elastic clamping components. The lower end of the clamping plate (46) is arc-shaped and fits against the outside of the movable long rod (23).

3. The Rockwell hardness tester with electric loader head downward pressure according to claim 2, characterized in that, The synchronous lifting plate (45) is fixedly inlaid with a frustum plate (41). A vertical beam plate (40) is provided on the outside of the frustum plate (41). The vertical beam plate (40) is fixedly connected to the outside of the side plate (14) and is located above the outer groove (48). The vertical beam plate (40) is U-shaped. The upper screw (43) is threadedly connected to the outside of the vertical beam plate (40). The upper end of the upper screw (43) is fixedly connected to a rotating disk (42). The lower end of the upper screw (43) spirally passes through the frustum plate (41) and extends into the interior of the frustum plate (41) and is fixedly connected to a rotating circular plate (44). The rotating circular plate (44) is movably connected to the interior of the frustum plate (41).

4. The Rockwell hardness tester with electric loader head downward pressure according to claim 3, characterized in that, Limiting vertical piles (47) are provided on both sides of the outside of the synchronous lifting plate (45). The limiting vertical piles (47) have vertical slots inside. The two limiting vertical piles (47) are fixedly connected to the two sides of the outside of the side platform (14). The two ends of the synchronous lifting plate (45) are movably connected to the vertical slots of the limiting vertical piles (47).

5. The Rockwell hardness tester with electric loader head downward pressure according to claim 1, characterized in that, Each of the side panels (14) is provided with an external assist component for positioning several elastic clamping components; The assist component includes two side beams (30), which are fixedly connected to the two sides of the side platform (14). A transverse slot (31) is provided on the opposite side of the two side beams (30). A short plate (32) is slidably connected inside each transverse slot (31). A synchronous top plate (33) is fixedly connected on the opposite side of the two short plates (32). The synchronous top plate (33) is located on the side of the limiting ring plate (26) near the center of the fixed platform (13), and the synchronous top plate (33) is in contact with the surface of the limiting ring plate (26). The synchronous top plate (33) moves laterally stably through the limiting of the two short plates (32). A long gripping plate (34) is fixedly connected to the outside of the synchronous top plate (33) for easy gripping.

6. The Rockwell hardness tester with electric loader head downward pressure according to claim 5, characterized in that, The assistive assembly also includes a rotating seat (35), a rotating handle (36), and a stake (37). The rotating seat (35) is fixedly connected to the outside of a short plate (32) on one side. The rotating handle (36) is rotatably connected to the outside of the rotating seat (35). An opening is provided in the center of the outside of the rotating handle (36). The stake (37) is fixedly connected to the outside of a side beam plate (30) on one side. When the short plate (32) is moved synchronously by the synchronous top plate (33), the short plate (32) moves synchronously, causing the rotating seat (35) and the rotating handle (36) to move synchronously. When the rotating handle (36) is moved by the rotating seat (35) to the position outside the stake (37), the rotating handle (36) is rotated around the rotating seat (35) to rotate the center hole of the rotating handle (36) into the outside of the stake (37), thereby achieving the effect of locking the synchronous top plate (33).

7. A Rockwell hardness tester with an electric loader head for downward pressure as described in claim 1, characterized in that, Both sides of the fixed mounting platform (13) are provided with lifting components for adjusting the height of the side platform (14). Each lifting component includes a base plate (50), which is fixedly connected to the outside of the fixed mounting platform (13). The side platform (14) is movably connected above the outside of the base plate (50). Both sides of the base plate (50) are fixedly connected with protruding plates (52), and vertical long rods (51) are fixedly connected to the outside of the protruding plates (52).

8. The Rockwell hardness tester with electric loader head compression according to claim 7, characterized in that, The outer side of the placement base plate (50) is provided with an extrusion plate (53) and a bottom screw (54). The upper end of the bottom screw (54) spirally penetrates the placement base plate (50) and extends upwards outwards. The upper end of the bottom screw (54) is rotatably connected to the inside of the extrusion plate (53). The upper end port of the bottom screw (54) is T-shaped. The lower end of the bottom screw (54) is fixedly connected to a ring plate (55).

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