Rod clamp pull test device

Abstract

The present invention relates to a bar clamp pull-out test device, comprising a test box, a feed port is provided on the surface of the test box, and the inner cavity of the test box is provided with a conveying mechanism for conveying a clamp for clamping a bar, a force-applying mechanism for performing a pull-out test on the bar, and a detection mechanism for covering the bar; the present invention relates to the field of clamp pull-out test technology. The bar clamp pull-out test device, through the provision of a force-applying mechanism and a grinding wheel for performing a pull-out test on the bar, can simultaneously detect multiple clamps, and can load and unload materials without stopping the machine during the test, and can prevent inaccurate force application due to slipping between the power head and the bar, and can adaptively lock bars of various calibers, with a wider range of applications.

Description

Technical Field

[0001] The invention relates to the technical field of clamp pulling test, in particular to a bar clamp pulling test device. Background Art

[0002] In the processing of micro precision drills, in order to ensure that the round rod material can achieve the required processing accuracy during processing, the round rod material needs to be fixed so that the drill can perform stable processing. Therefore, whether the clamping action is stable may affect the quality of the processed material. The general opening and closing collet uses the opening and closing of the two side clamps to fix the required processing material, so it is necessary to perform a pull-out test on the chuck using a pull-out testing machine.

[0003] However, when the existing drawing test device is used to draw the bar, it is easy to slip due to the smooth surface during drawing, resulting in inaccurate test results and affecting the test results. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a rod clamp pulling test device to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a bar clamp pull-out test device, comprising a test box, a feed port is provided on the surface of the test box, and the inner cavity of the test box is provided with a conveying mechanism for conveying a clamp for clamping a bar, a force applying mechanism for performing a pull-out test on the bar, and a detection mechanism for covering the bar;

[0006] The conveying mechanism includes a rotating disk rotatably arranged in the inner cavity of the test box, a plurality of workstations arranged in a circular array are fixedly connected to the surface of the rotating disk, and a pneumatic clamping table for clamping the end of the clamp is rotatably connected above the workstation;

[0007] A rack is fixedly connected to the bottom of the inner cavity of the test box, a tooth groove meshing with the rack is provided on the surface of the pneumatic clamping table, and a grinding wheel driven by a motor for grinding the surface of the rod is rotatably connected to the inner cavity of the test box;

[0008] The force-applying mechanism comprises a power head which is arranged at the top of the inner cavity of the test box and driven by a hydraulic mechanism. The inner cavity of the power head is provided with a groove which matches the top of the rod. The inner cavity of the power head is slidably connected with a through-arranged push rod through a sliding groove. One end of the push rod is fixedly connected with a push block. The surface of the push rod is sleeved with a return spring which is respectively fixedly connected with the push block and the inner cavity of the sliding groove at both ends. The bottom of the push block is provided with an inclined surface. When in use, the rod is clamped by a clamp, and then the clamp is placed into the station above the rotating disk through the feed port. The pneumatic clamping table in the part clamps the fixture through the pneumatic clamping table, and then drives the pneumatic clamping table to rotate through the rotating disk. Through the setting of the rack and the tooth groove, when the rotating disk rotates, it drives the workstation to rotate. At this time, the pneumatic clamping table rotates by itself, and drives the rod to rotate through the clamp. When it moves to a workstation, the rod rotates 90 degrees by itself, and then four notches are polished on the surface of the rod by the grinding wheel. The fixture clamping the rod moves to the bottom of the power head, and the driving cylinder drives the push plate to move toward the rod, driving the elastic airbag on the surface of the fixed plate to abut against the rod. The surface of the rod, at this time, the elastic airbag is squeezed, and the internal gas enters the telescopic airbag through the pipeline, and then the telescopic airbag expands to push the movable plate toward the rod until the detection sensor assembly on the movable plate abuts against the surface of the rod. At this time, the power head is driven down by the hydraulic mechanism, and the rod enters the groove, and then abuts on the inclined surface of the top block, pushing the top rod to compress the reset spring and retract it into the sliding groove, and then continues to move downward. At this time, the top block moves to the notch of the rod polished by the grinding wheel. At this time, the reset spring pushes the top rod to move outward, driving the top block to be inserted into the notch, and then the power head is pulled upward by the hydraulic mechanism, and the rod is pulled upward by four top blocks to perform a pulling test on the rod. After the test is completed, the rotating disk rotates to the feed port, the tested fixture is taken out, and then a new fixture is added for testing. Multiple fixtures can be tested at the same time, and loading and unloading can be carried out without stopping the machine during the test. It can also prevent the power head and the rod from slipping, resulting in inaccurate force application, and can adaptively lock rods of various calibers, with a wider range of applications.

[0009] As a further solution of the present invention: there are six workstations and four grinding wheels, which are respectively arranged on the sides of the four workstations outside the feed port and the force-applying mechanism. Through the arrangement of the rack and the tooth groove, when the rotating disk rotates, the workstation is driven to rotate. At this time, the pneumatic clamping table rotates, and the rod is driven to rotate through the clamp. When it moves to a workstation, the rod itself rotates 90 degrees, and then four notches are ground on the surface of the rod by the grinding wheel, which is convenient for the top block to be inserted into the notch, and the rod is forced to be pulled and lifted. The force is applied more accurately, which can reduce the occurrence of inaccurate detection caused by slipping, prevent the rod from falling out, and have a better detection effect.

[0010] As a further solution of the present invention: the detection mechanism includes driving cylinders fixed on both sides of the inner cavity of the test box, one end of the two driving cylinder piston rods are fixedly connected to push plates arranged on both sides of the workstation, both sides of the push plates are rotatably connected to movable plates, an elastic airbag is fixed to the side of the push plate facing the workstation, both sides of the push plate are fixedly connected to fixed plates located on one side of the movable plate, the inner cavity of the fixed plate is fixedly connected to a telescopic airbag connected to the elastic airbag through a pipeline, one end of the telescopic airbag is fixedly connected to one side of the movable plate, and one side of the movable plate and the elastic airbag are both provided with a detection sensor component, which detects the rod material through the detection sensor component The displacement is detected, and the detection sensor component is an existing test sensor, so it is not described in detail. When in use, the workstation drives the rod to move between the two push plates, and then the driving cylinder drives the push plate to move toward the rod, driving the elastic airbag on the surface of the fixed plate to abut against the surface of the rod. At this time, the elastic airbag is squeezed, and the internal gas enters the telescopic airbag through the pipeline. Then the telescopic airbag expands and pushes the moving plate toward the rod until the detection sensor component on the moving plate abuts against the surface of the rod. The surface of the rod is applied in multiple directions to ensure the accuracy of the test. It can adaptively adapt and fit rods of various sizes to ensure good test results.

[0011] As a further solution of the present invention: a limiting frame for limiting the side of the elastic airbag is arranged on one side of the fixed plate. Through the arrangement of the limiting frame, the elastic airbag can only extend in one direction to push the movable plate to move.

[0012] As a further solution of the present invention: the surface of the rotating disk below the workstation is provided with a hole groove, and the bottom of the test box is provided with a collecting groove connected to the hole groove. When in use, the debris polished by the grinding wheel falls into the hole groove and then falls into the collecting groove for collection.

[0013] As a further solution of the present invention: the top of the rotating disk is fixedly connected with a baffle located on the side of the workstation, and the baffle is located in the rotation direction of the grinding wheel. When the grinding wheel rotates, the grinding debris is thrown out and then blocked by the baffle. After losing power, it falls into the hole groove below for collection, which can effectively prevent the debris from splashing everywhere.

[0014] As a further solution of the present invention: an air pump for supplying air to the pneumatic clamping table is built into the inner cavity of the rotating disk.

[0015] As a further solution of the present invention: four grooves are provided, and they correspond one by one to the notches polished by the grinding wheel on the rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can test a plurality of fixtures at the same time by setting a force-applying mechanism and a grinding wheel for performing a pull-out test on a rod, and can load and unload materials without stopping the machine during the test. It can also prevent inaccurate force application due to slipping between the power head and the rod, and can adaptively lock rods of various calibers, thus having a wider range of applications.

[0018] 2. In the present invention, when the rotating disk rotates, it drives the workstation to rotate. At this time, the pneumatic clamping table rotates by itself, and drives the rod to rotate through the clamp. When it moves to a workstation, the rod itself rotates 90 degrees, and then four notches are polished on the surface of the rod by a grinding wheel to facilitate the insertion of the top block into the notch, so that the rod can be pulled up with force, and the force can be applied more accurately, which can reduce the occurrence of inaccurate detection caused by slipping, prevent the rod from falling out, and achieve better detection effect.

[0019] 3. When the present invention is in use, the workstation drives the rod to move between the two push plates, and then the driving cylinder drives the push plate to move toward the rod, driving the elastic airbag on the surface of the fixed plate to abut against the surface of the rod. At this time, the elastic airbag is squeezed, and the internal gas enters the telescopic airbag through the pipeline. Then the telescopic airbag expands and pushes the moving plate toward the rod until the detection sensor component on the moving plate abuts against the surface of the rod. The surface of the rod is applied in multiple directions to ensure the accuracy of the test. Rods of various sizes can be adaptively adapted and tightly fitted to ensure good test results.

[0020] 4. In the present invention, when the wheel rotates, the grinding debris is thrown out and then blocked by the baffle. After losing power, it falls into the hole groove below for collection, which can effectively prevent the debris from splashing everywhere. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a top view of the structure of the test box of the present invention;

[0023] Figure 3 It is a structural cross-sectional view of the power head of the present invention;

[0024] Figure 4 It is a schematic diagram of the detection state of the detection mechanism of the present invention.

[0025] In the figure: 1. test box; 2. feed port; 3. rotating disk; 4. work station; 5. pneumatic clamping table; 6. rack; 7. grinding wheel; 8. baffle; 9. hole slot; 10. driving cylinder; 11. push plate; 12. moving plate; 13. elastic airbag; 14. fixed plate; 15. telescopic airbag; 16. detection sensor component; 17. fixture; 18. rod; 19. power head; 20. groove; 21. sliding groove; 22. ejector rod; 23. reset spring; 24. ejector block; 25. inclined plane. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0027] See also Figure 1-4 The present invention provides a technical solution: a rod clamp pull-out test device, comprising a test box 1, a feed port 2 is provided on the surface of the test box 1, and the inner cavity of the test box 1 is provided with a conveying mechanism for conveying a clamp 17 for clamping a rod 18, a force applying mechanism for performing a pull-out test on the rod 18, and a detection mechanism for covering the rod 18;

[0028] The conveying mechanism includes a rotating disk 3 rotatably arranged in the inner cavity of the test box 1, a plurality of workstations 4 arranged in a circular array are fixedly connected to the surface of the rotating disk 3, and a pneumatic clamping table 5 for clamping the end of the clamp 17 is rotatably connected above the workstation 4;

[0029] A rack 6 is fixedly connected to the bottom of the inner cavity of the test box 1, and a tooth groove meshing with the rack 6 is provided on the surface of the pneumatic clamping table 5. A grinding wheel 7 driven by a motor for grinding the surface of the rod 18 is rotatably connected to the inner cavity of the test box 1;

[0030] The force-applying mechanism includes a power head 19 arranged at the top of the inner cavity of the test box 1 and driven by a hydraulic mechanism. The inner cavity of the power head 19 is provided with a groove 20 adapted to the top of the rod 18. The inner cavity of the power head 19 is slidably connected with a push rod 22 arranged through a sliding groove 21. One end of the push rod 22 is fixedly connected with a push block 24. The surface of the push rod 22 is sleeved with a return spring 23 with two ends respectively fixedly connected with the push block 24 and the inner cavity of the sliding groove 21. The bottom of the push block 24 is provided with an inclined surface 25. When in use, the rod 18 is clamped by the clamp 17, and then the clamp 17 is placed in the pneumatic clamping table 5 inside the station 4 above the rotating disk 3 through the feed port 2. The pneumatic clamping table 5 clamps the clamp 17 The pneumatic clamping table 5 is clamped, and then the rotating disk 3 drives the pneumatic clamping table 5 to rotate. Through the arrangement of the rack 6 and the tooth groove, when the rotating disk 3 rotates, the workstation 4 is driven to rotate. At this time, the pneumatic clamping table 5 rotates by itself, and drives the rod 18 to rotate through the clamp 17. When it moves to a workstation 4, the rod 18 rotates 90 degrees by itself, and then four notches are polished on the surface of the rod 18 by the grinding wheel 7. The clamp 17 for clamping the rod 18 moves to the bottom of the power head 19, and the driving cylinder 10 drives the push plate 11 to move toward the rod 18, driving the elastic airbag 13 on the surface of the fixed plate 14 to abut against the surface of the rod 18. At this time, the elastic airbag 13 is squeezed, and the internal gas enters the telescopic airbag 15 through the pipeline, and then the telescopic airbag 15 is stretched. The inflatable bag 15 expands and pushes the movable plate 12 toward the rod 18 until the detection sensor assembly 16 on the movable plate 12 abuts against the surface of the rod 18. At this time, the power head 19 is driven down by the hydraulic mechanism. At this time, the rod 18 enters the groove 20, and then abuts against the inclined surface 25 of the top block 24, pushing the top rod 22 to compress the return spring 23 and retract it into the sliding groove 21, and then continues to move downward. At this time, the top block 24 moves to the notch of the rod 18 polished by the grinding wheel 7. At this time, the return spring 23 pushes the top rod 22 to move outward, driving the top block 24 to be inserted into the notch, and then the power head 19 is pulled upward by the hydraulic mechanism, and the rod 18 is pulled upward by the four top blocks 24, The rod 18 is subjected to a drawing test. After the test is completed, the power head 19 is started to move downward, and then the top block 24 is squeezed and retracted. At this time, the power head 19 is quickly pulled up, and before the top block 24 is extended out, the power head 19 is directly pulled up above the rod 18 to cancel the drawing of the rod 18. The rotating disk 3 is rotated to the feed port 2, the tested fixture 17 is taken out, and then a new fixture 17 is added for testing. Multiple fixtures 17 can be tested at the same time, and loading and unloading can be carried out without stopping the machine during the test. Inaccurate force application due to slipping between the power head 19 and the rod 18 can be prevented, and adaptive locking can be performed on rods 18 of various calibers, with a wider range of applications.

[0031] There are six workstations 4 and four grinding wheels 7, which are respectively arranged on the sides of four workstations 4 outside the feed port 2 and the force-applying mechanism. Through the arrangement of the rack 6 and the tooth groove, when the rotating disk 3 rotates, the workstation 4 is driven to rotate. At this time, the pneumatic clamping table 5 rotates by itself, and drives the rod 18 to rotate through the clamp 17. When it moves to a workstation 4, the rod 18 rotates 90 degrees by itself, and then four notches are ground on the surface of the rod 18 by the grinding wheel 7, so that the top block 24 is inserted into the notch, and the rod 18 is forced to be pulled and lifted. The force is applied more accurately, which can reduce the occurrence of inaccurate detection caused by slipping, prevent the rod 18 from falling out, and achieve better detection effect.

[0032] The detection mechanism includes a driving cylinder 10 fixed on both sides of the inner cavity of the test box 1, one end of the piston rod of the two driving cylinders 10 is fixedly connected to a push plate 11 arranged on both sides of the workstation 4, both sides of the push plate 11 are rotatably connected to a moving plate 12, an elastic airbag 13 is fixed to the side of the push plate 11 facing the workstation 4, both sides of the push plate 11 are fixedly connected to a fixed plate 14 located on one side of the moving plate 12, the inner cavity of the fixed plate 14 is fixedly connected to a telescopic airbag 15 connected to the elastic airbag 13 through a pipeline, one end of the telescopic airbag 15 is fixedly connected to one side of the moving plate 12, and one side of the moving plate 12 and the elastic airbag 13 are both provided with a detection sensor component 16, and the displacement of the rod 18 is detected by the detection sensor component 16. The sensing component 16 is an existing test sensor, so it is not described in detail. When in use, the workstation 4 drives the rod 18 to move between the two push plates 11, and then the driving cylinder 10 drives the push plate 11 to move toward the rod 18, driving the elastic airbag 13 on the surface of the fixed plate 14 to abut against the surface of the rod 18. At this time, the elastic airbag 13 is squeezed, and the internal gas enters the telescopic airbag 15 through the pipeline. Then the telescopic airbag 15 expands and pushes the moving plate 12 toward the rod 18 until the detection sensing component 16 on the moving plate 12 abuts against the surface of the rod 18, and the surface of the rod 18 is applied in multiple directions to ensure the accuracy of the test. It can adaptively adapt and fit rods 18 of various sizes to ensure good test results.

[0033] A limiting frame for limiting the side of the elastic airbag 13 is provided on one side of the fixed plate 14. Through the setting of the limiting frame, the elastic airbag 13 can only extend in one direction to push the movable plate 12 to move.

[0034] A hole groove 9 is provided on the surface of the rotating disk 3 below the workstation 4, and a collecting groove connected to the hole groove 9 is provided at the bottom of the test box 1. When in use, the debris ground by the grinding wheel 7 falls into the hole groove 9 and then falls into the collecting groove for collection.

[0035] The top of the rotating disk 3 is fixedly connected with a baffle 8 located on the side of the work station 4. The baffle 8 is located in the rotation direction of the grinding wheel 7. When the grinding wheel 7 rotates, the grinding debris is thrown out and then blocked by the baffle 8. After losing power, it falls into the hole groove 9 below for collection, which can effectively prevent the debris from splashing everywhere.

[0036] An air pump for supplying air to the pneumatic clamping table 5 is built into the inner cavity of the rotating disk 3 .

[0037] There are four grooves 20 , which correspond one by one to the notches of the rod 18 grinded by the grinding wheel 7 .

[0038] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A rod clamp pulling test device, comprising a test box (1), wherein a feed port (2) is provided on a surface of the test box (1), and the device is characterized in that: The inner cavity of the test box (1) is provided with a conveying mechanism for conveying a clamp (17) for clamping a rod (18), a force applying mechanism for performing a pull-out test on the rod (18), and a detection mechanism for coating the rod (18); The conveying mechanism comprises a rotating disk (3) rotatably arranged in the inner cavity of the test box (1), a plurality of workstations (4) arranged in a circular array are fixedly connected to the surface of the rotating disk (3), and a pneumatic clamping table (5) for clamping the end of the clamp (17) is rotatably connected above the workstation (4); A rack (6) is fixedly connected to the bottom of the inner cavity of the test box (1), a tooth groove meshing with the rack (6) is provided on the surface of the pneumatic clamping table (5), and a grinding wheel (7) driven by a motor for grinding the surface of the rod (18) is rotatably connected to the inner cavity of the test box (1); The force-applying mechanism comprises a power head (19) arranged at the top of the inner cavity of the test box (1) and driven by a hydraulic mechanism, the inner cavity of the power head (19) is provided with a groove (20) adapted to the top of the rod (18), the inner cavity of the power head (19) is slidably connected to a push rod (22) arranged therethrough through a sliding groove (21), one end of the push rod (22) is fixedly connected to a push block (24), the surface of the push rod (22) is sleeved with a return spring (23) whose two ends are respectively fixedly connected to the push block (24) and the inner cavity of the sliding groove (21), the bottom of the push block (24) is provided with an inclined surface (25), six workstations (4) are provided, and four grinding wheels (7) are provided, which are respectively arranged on the sides of the four workstations (4) other than the feed port (2) and the force-applying mechanism, and the detection mechanism comprises a driving cylinder (10) fixed on both sides of the inner cavity of the test box (1) ), one end of the piston rod of the two driving cylinders (10) is fixedly connected to a push plate (11) arranged on both sides of the workstation (4), both sides of the push plate (11) are rotatably connected to a movable plate (12), an elastic airbag (13) is fixed to the side of the push plate (11) facing the workstation (4), both sides of the push plate (11) are fixedly connected to a fixed plate (14) located on one side of the movable plate (12), the inner cavity of the fixed plate (14) is fixedly connected to a telescopic airbag (15) connected to the elastic airbag (13) through a pipeline, one end of the telescopic airbag (15) is fixedly connected to one side of the movable plate (12), one side of the movable plate (12) and the elastic airbag (13) are both provided with a detection sensor component (16), and four grooves (20) are provided, which correspond one to one to the notches of the rod (18) polished by the grinding wheel (7).

2. The bar fixture pulling test device according to claim 1, characterized in that: A limiting frame for limiting the side of the elastic airbag (13) is provided on one side of the fixing plate (14).

3. The bar fixture pulling test device according to claim 1, characterized in that: A hole groove (9) is provided on the surface of the rotating disk (3) below the workstation (4), and a collecting groove connected to the hole groove (9) is provided on the bottom of the test box (1).

4. The bar fixture pulling test device according to claim 1, characterized in that: The top of the rotating disk (3) is fixedly connected to a baffle (8) located on the side of the work station (4).

5. The bar fixture pulling test device according to claim 1, characterized in that: An air pump for supplying air to the pneumatic clamping table (5) is built into the inner cavity of the rotating disk (3).

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