A bolt torque testing machine

Abstract

The present invention discloses a bolt torque testing machine, comprising a frame and a first torque testing mechanism; a workbench is arranged on the frame; a cam divider is arranged on the workbench; a turntable is arranged on the cam divider; the rotation of the cam divider can drive the turntable to rotate together; the turntable is evenly distributed with two positioning fixtures along its circumferential direction; a groove is arranged on the upper surface of the positioning fixture; a circular through hole is arranged in the groove; a first station and a third station are evenly distributed on the same circumference on the upper surface of the workbench; the first station is a starting position or an end position; the first torque testing mechanism is arranged corresponding to the third station, and the first torque testing mechanism can measure the torque of the bolt inserted into the circular through hole; the present invention can realize that after the workpiece to be tested is loaded on the turntable, as the turntable is driven by the cam divider to rotate to different stations, the torque strength of the bolt is automatically tested with high accuracy.

Description

Technical Field

[0001] The invention relates to a bolt torque testing machine with high accuracy, which can realize automatic detection of bolt torque strength after a workpiece to be tested is loaded on a turntable and the turntable is driven by a cam divider to rotate to different workstations. Background Art

[0002] In industrial applications, it is usually expected that the torque of a large number of bolts after assembly or welding reaches a predetermined design value. In existing operations, the usual practice is that operators are required to use a torque wrench to set a value and then measure the assembled or welded bolts one by one to ensure that the bolts can meet the predetermined design requirements. The process is time-consuming and labor-intensive, and due to the large error in manual inspection, the accuracy of the inspection results is not high, and the quality cannot meet the traceability requirements.

[0003] To this end, we have developed a bolt torque testing machine that can automatically detect the torque strength of bolts after the workpiece to be tested is loaded on the turntable. As the turntable is driven by the cam divider to rotate to different workstations, it can also automatically detect the torque strength of bolts with high accuracy. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a bolt torque testing machine with high accuracy, which can realize automatic detection of bolt torque strength after the workpiece to be tested is loaded on a turntable and the turntable is driven by a cam divider to rotate to different workstations.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a bolt torque testing machine, comprising a frame and a first torque testing mechanism; a workbench is arranged on the frame; a cam divider is fixedly arranged in the middle of the upper surface of the workbench; a turntable is arranged on the cam divider; the rotation of the cam divider can drive the turntable to rotate together; the turntable is arranged horizontally; two positioning fixtures are evenly distributed along the circumferential direction of the turntable; a groove is arranged on the upper surface of the positioning fixture; a circular through hole is arranged in the groove; a fixed disk is arranged directly above the turntable; the fixed disk is arranged parallel to the turntable; the fixed disk and the turntable are concentric; the fixed disk is provided The first clamping device; the first station and the third station are evenly distributed on the same circumference on the upper surface of the workbench; the first station is a starting position or an ending position, which is used to place the workpiece to be measured on the positioning fixture on the turntable or to take out the workpiece that has been tested from the positioning fixture on the turntable. When installing the workpiece to be measured, the bolt on the workpiece to be measured is inserted into the circular through hole; the third station is a first bolt torque detection position, and the first torque testing mechanism is set corresponding to the third station, and the first torque testing mechanism can measure the torque of the bolt inserted into the circular through hole; the first clamping device is set corresponding to the third station, and is used to clamp the workpiece to be measured on the positioning fixture on the third station.

[0006] Preferably, the bolt torque testing machine also includes a barcode scanner; the turntable is evenly distributed with 3 positioning fixtures along its circumferential direction; the upper surface of the workbench is evenly distributed with a first station, a second station and a third station on the same circumference; the first station is a starting position or an ending position, which is used to place the workpiece to be tested on the positioning fixture on the turntable or to take out the workpiece that has been tested from the positioning fixture on the turntable, and when the workpiece to be tested is installed, the bolt on the workpiece to be tested is inserted into the circular through hole; the second station is a scanning position, and the barcode scanner is set corresponding to the second station, and can scan the QR code on the workpiece to be tested placed on the positioning fixture; the third station is the first bolt torque detection position, and the first torque testing mechanism is set corresponding to the third station, and the first torque testing mechanism can measure the torque of the bolt inserted into the circular through hole; the first clamping device is set corresponding to the third station, and is used to clamp the workpiece to be tested on the positioning fixture on the third station.

[0007] Preferably, the bolt torque testing machine also includes a second torque testing mechanism; the turntable is evenly distributed with 4 positioning fixtures along its circumferential direction; the upper surface of the positioning fixture is provided with a groove; a circular through hole is provided at one end of the groove, and a long strip through hole is provided at the other end; the fixed disk is also provided with a second clamping device; the line connecting the first clamping device to the center of the fixed disk and the line connecting the second clamping device to the center of the fixed disk form a 90-degree angle; the upper surface of the workbench is evenly distributed with a first station, a second station, a third station and a fourth station on the same circumference; the first station is a starting position or an ending position, which is used to place the workpiece to be tested on the positioning fixture on the turntable or to remove the workpiece that has been tested from the positioning fixture on the turntable. When installing the workpiece to be tested , the two bolts on the workpiece to be measured are respectively inserted into the circular through hole and the elongated through hole; the second station is a scanning position, and the barcode scanner is set corresponding to the second station, and can scan the QR code on the workpiece to be measured placed on the positioning tooling; the third station is a first bolt torque detection position, and the first torque testing mechanism is set corresponding to the third station, and the first torque testing mechanism can measure the torque of the bolt inserted into the circular through hole; the fourth station is a second bolt torque detection position, and the second torque testing mechanism is set corresponding to the fourth station, and the second torque testing mechanism can measure the torque of the bolt inserted into the elongated through hole; the second clamping device is set corresponding to the fourth station, and is used to clamp the workpiece to be measured on the positioning tooling on the fourth station.

[0008] Preferably, a first lifting cylinder is provided at the third workstation C on the workbench, and the first torque testing mechanism is vertically arranged on the side of the first lifting cylinder; the first torque testing mechanism passes through the workbench of the frame and is connected to the piston rod of the first lifting cylinder; the piston rod of the first lifting cylinder can perform lifting and lowering movements in the vertical direction; the lifting and lowering of the piston rod of the first lifting cylinder can drive the first torque testing mechanism to perform corresponding lifting and lowering.

[0009] Preferably, a slide rail and an electric cylinder are provided at the fourth workstation on the workbench; a second lifting cylinder is provided on the slide rail; the second lifting cylinder can make horizontal movements along the slide rail; the output shaft of the electric cylinder is connected to the side of the second lifting cylinder; the extension and retraction of the output shaft of the electric cylinder can drive the second lifting cylinder to make horizontal back and forth movements along the slide rail; the piston rod of the second lifting cylinder can make vertical lifting movements; the second torque testing mechanism is vertically arranged on the side of the second lifting cylinder; the second torque testing mechanism is connected to the piston rod of the second lifting cylinder after passing through the workbench of the frame; the lifting and lowering of the piston rod of the second lifting cylinder can drive the second torque testing mechanism to make corresponding lifting and lowering.

[0010] Preferably, the bolt torque testing machine also includes a control center, and the barcode scanner is electrically connected to the control center; the barcode scanner can read the barcode information on the workpiece to be tested on the positioning tooling corresponding to the second workstation, and transmit the read barcode information to the control center; the first torque testing mechanism is electrically connected to the control center, and the first torque testing mechanism can transmit the bolt torque detection result to the control center; the second torque testing mechanism is electrically connected to the control center, and the second torque testing mechanism can also transmit the bolt torque detection result to the control center.

[0011] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0012] The bolt torque testing machine described in the present invention can realize automatic detection of the bolt torque strength after the workpiece to be tested is loaded on the turntable. As the turntable is driven by the cam divider to rotate to different workstations, it has high accuracy and can automatically identify the test results according to the scanned barcode records of the workpiece to be tested for subsequent quality traceability to meet the customer's quality traceability requirements. In addition, the setting of the long through holes on the positioning tooling and the electric cylinder can push the second torque testing mechanism to adjust its position along the horizontal direction of the slide rail to adapt to the torque measurement requirements of different bolt spacings on the workpiece to be tested, thereby greatly improving its versatility and thus greatly improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The technical solution of the present invention is further described below in conjunction with the accompanying drawings:

[0014] AttachedFigure 1 A three-dimensional diagram of the bolt torque testing machine of the present invention;

[0015] Attached Figure 2 It is a three-dimensional enlarged view of the installation structure of the rotating disk and the fixed disk of the bolt torque testing machine of the present invention;

[0016] Attached Figure 3 It is a three-dimensional enlarged view of the positioning tool of the bolt torque testing machine described in the present invention;

[0017] Attached Figure 4 It is a three-dimensional enlarged view of the installation structure of the first torque testing mechanism of the bolt torque testing machine of the present invention;

[0018] Among them: 1. Frame; 2. Second torque testing mechanism; 3. First torque testing mechanism; 4. Cam divider; 5. First lifting cylinder; 6. Second lifting cylinder; 7. Slide rail; 8. Electric cylinder; 9. Barcode scanner; 10. First clamping device; 11. Second clamping device; 12. Turntable; 13. Fixed disk; 14. Positioning tooling; 141. Groove; 142. Circular through hole; 143. Long strip through hole; A. First station; B. Second station; C. Third station; D. Fourth station. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0020] Attached Figure 1-4The bolt torque testing machine of the present invention comprises a frame 1, a barcode scanner 9, a first torque testing mechanism 3 and a second torque testing mechanism 2; a workbench (not shown) is arranged on the frame 1; a cam divider 4 is fixedly arranged in the middle of the upper surface of the workbench; a turntable 12 is fixed on the output flange of the cam divider 4; the rotation of the cam divider 4 can drive the turntable 12 to rotate together, rotating 90 degrees each time; the turntable 12 is arranged horizontally; the turntable 12 is evenly distributed with 4 positioning fixtures 14 along its circumferential direction; the upper surface of the positioning fixture 14 is provided with a groove 141; the groove A circular through hole 142 is provided at one end of the inner portion, and a long strip through hole 143 is provided at the other end; a fixed disk 13 is provided on the boss of the cam divider 4; the fixed disk 13 is always in a stationary state; the fixed disk 13 is located directly above the rotating disk 12; the fixed disk 13 and the rotating disk 12 are concentric and parallel to each other; a first clamping device 10 and a second clamping device 11 are provided on the fixed disk 13; a line connecting the first clamping device 10 to the center of the fixed disk 13 and a line connecting the second clamping device 11 to the center of the fixed disk 13 form an angle of 90 degrees; the upper surface of the workbench is evenly distributed on the same circumference with a first station A, a second station B, and a second station C. Station B, the third station C and the fourth station D; the first station A is the starting position or the ending position, which is used to place the workpiece to be tested on the positioning fixture 14 on the turntable 12 or to take out the workpiece that has been tested from the positioning fixture 14 on the turntable 12. When installing the workpiece to be tested, the two bolts on the workpiece to be tested are respectively inserted into the circular through hole 142 and the long strip through hole 143; the second station B is the scanning position, and the barcode scanner 9 is set corresponding to the second station B, which can scan the QR code on the workpiece to be tested placed on the positioning fixture 14; the third station C is the first bolt torque detection position, and the first torque test machine The first torque testing mechanism 3 is arranged corresponding to the third station C, and the first torque testing mechanism 3 can measure the torque of the bolt inserted into the circular through hole 142; the fourth station D is the second bolt torque detection position, and the second torque testing mechanism 2 is arranged corresponding to the fourth station D, and the second torque testing mechanism 2 can measure the torque of the bolt inserted into the elongated through hole 143; the first clamping device 10 is arranged corresponding to the third station C, and is used to clamp the workpiece to be measured on the positioning tool 14 on the third station C; the second clamping device 11 is arranged corresponding to the fourth station D, and is used to clamp the workpiece to be measured on the positioning tool 14 on the fourth station D.

[0021] The first torque testing mechanism 3 and the second torque testing mechanism 2 both adopt conventional torque testing machines, such as a pistol-type screwdriver, and their structures and working principles are not described here again.

[0022] A first lifting cylinder 5 is provided at the third workstation C on the workbench, and a first torque testing mechanism 3 is vertically provided on the side of the first lifting cylinder 5; the first torque testing mechanism 3 passes through the workbench of the frame 1 and is connected to the first lifting cylinder 5; the piston rod (not marked) of the first lifting cylinder 5 can perform vertical lifting movement; the piston rod of the first lifting cylinder 5 is connected to the first torque testing mechanism 3, and the vertical lifting of the piston rod (not marked) of the first lifting cylinder 5 can drive the first torque testing mechanism 3 to perform corresponding lifting.

[0023] A slide rail 7 and an electric cylinder 8 are provided at the fourth workstation D on the workbench; a second lifting cylinder 6 is provided on the slide rail 7; the second lifting cylinder 6 can make horizontal movements along the slide rail 7; the output shaft of the electric cylinder 8 is connected to the side of the second lifting cylinder 6; the extension and retraction of the output shaft of the electric cylinder 8 can drive the second lifting cylinder 6 to make horizontal back and forth movements along the slide rail 7; the piston rod (not marked) of the second lifting cylinder 6 can make vertical lifting movements; a second torque testing mechanism 2 is vertically provided on the side of the second lifting cylinder 6; the second torque testing mechanism 2 is connected to the piston rod of the second lifting cylinder 6 after passing through the workbench of the frame 1; the vertical lifting of the piston rod of the second lifting cylinder 6 can drive the second torque testing mechanism 2 to make corresponding lifting.

[0024] The first clamping device 10 includes a clamping block (not marked) and a clamping cylinder (not marked); a clamping block is provided at the lower part of the piston rod of the clamping cylinder, and the clamping block moves vertically up and down with the piston rod of the clamping cylinder; when the piston rod of the clamping cylinder extends downward, it can clamp the workpiece to be measured in the positioning tool 14 on the turntable 12 corresponding to the third workstation C.

[0025] The second pressing device 11 has the same structure as the first pressing device 10 and will not be described again here.

[0026] The bolt torque testing machine described in the present invention also includes a control center (not shown), and the barcode scanner 9 is electrically connected to the control center; the barcode scanner 9 can read the barcode information on the workpiece to be tested on the positioning tool 14 corresponding to the second workstation B, and transmit the read barcode information to the control center; the first torque testing mechanism 3 is electrically connected to the control center, and the first torque testing mechanism 3 can transmit the bolt torque detection result to the control center; the second torque testing mechanism 2 is electrically connected to the control center, and the second torque testing mechanism 2 can also transmit the bolt torque detection result to the control center.

[0027] During operation, at the first station A, the workpiece to be measured is loaded into the groove of the positioning fixture 14 on the turntable 12, the first bolt at one end of the workpiece to be measured passes through the circular through hole 142 on the positioning fixture 14, and the second bolt at the other end of the workpiece passes through the long strip through hole 143 on the positioning fixture 14, then the cam divider 4 starts to work and drives the turntable 12 to rotate, so that the workpiece to be measured on the positioning fixture 14 rotates to the second station B, and the barcode scanner 9 starts to read the barcode information on the workpiece to be measured on the positioning fixture 14, and transmits the read barcode information to the control center; the cam divider 4 drives the turntable 12 to rotate 90 degrees each time, After pausing for a set time, it continues to work, and repeats this process; then the cam divider 4 continues to work and drives the turntable 12 to rotate to the third station C. At this time, the first clamping device 10 works to clamp the workpiece to be tested, and at the same time the first lifting cylinder 5 drives the first torque testing mechanism 3 to be inserted into the first bolt, and the first torque testing mechanism 3 starts to work to perform torque testing on the first bolt; under the action of the torque set by the first torque testing mechanism, if the first bolt does not fall off, the firmness of the first bolt fixed on the workpiece to be tested is qualified, otherwise it is unqualified, and the first torque testing mechanism 3 transmits the test result to the control center; then ... The tightening device 10 loosens the workpiece to be tested, the first torque testing mechanism 3 descends, causing the first bolt to fall out, and the cam divider 4 continues to work and drives the turntable 12 to rotate to the fourth station D. At this time, the second clamping device 11 works to clamp the workpiece to be tested, and at the same time the electric cylinder 8 drives the second lifting cylinder 6 to move horizontally along the slide rail 7, so that the second torque testing mechanism 2 is aligned with the second bolt, and the second lifting cylinder 6 then drives the second torque testing mechanism 2 to rise and insert into the second bolt, and the second torque testing mechanism 2 starts to work to perform torque detection on the second bolt; under the torque set by the second torque testing mechanism, if the second bolt does not fall off, the second If the firmness of the bolt fixed on the workpiece to be tested is qualified, otherwise it is unqualified, the second torque testing mechanism 2 will also transmit the test result to the control center; then, the second clamping device 11 loosens the workpiece to be tested, and the second torque testing mechanism 2 descends to make the second bolt disengage, and the cam divider 4 continues to work and drives the turntable 12 to rotate to the first workstation A. At this time, the workpiece that has been tested is taken out, and it is placed in a qualified or unqualified place according to the test results recorded by the control center; this process is repeated, and the workpiece to be tested can continue to be tested. At the same time, the control center has records of the test results of each workpiece to be tested, which is convenient for management and traceability.

[0028] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0029] The bolt torque testing machine described in the present invention can realize automatic detection of the bolt torque strength after the workpiece to be tested is loaded on the turntable. As the turntable is driven by the cam divider to rotate to different workstations, it has high accuracy and can automatically identify the test results according to the scanned barcode records of the workpiece to be tested for subsequent quality traceability to meet the customer's quality traceability requirements. In addition, the setting of the long through holes on the positioning tooling and the electric cylinder can push the second torque testing mechanism to adjust its position along the horizontal direction of the slide rail to adapt to the torque measurement requirements of different bolt spacings on the workpiece to be tested, thereby greatly improving its versatility and thus greatly improving the detection efficiency.

[0030] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A bolt torque testing machine, characterized in that: The machine comprises a frame and a first torque testing mechanism; a workbench is arranged on the frame; a cam divider is fixedly arranged in the middle of the upper surface of the workbench; a turntable is arranged on the cam divider; the rotation of the cam divider can drive the turntable to rotate together; the turntable is arranged horizontally; two positioning fixtures are evenly distributed along its circumferential direction; a groove is arranged on the upper surface of the positioning fixture; a circular through hole is arranged in the groove; a fixed disk is arranged directly above the turntable; the fixed disk is arranged parallel to the turntable; the fixed disk and the turntable are concentric; a first clamping device is arranged on the fixed disk; the upper surface of the workbench The first station and the third station are evenly distributed on the same circumference of the surface; the first station is a starting position or an ending position, and is used to place the workpiece to be tested on the positioning fixture on the turntable or to take out the workpiece that has been tested from the positioning fixture on the turntable. When installing the workpiece to be tested, the bolt on the workpiece to be tested is inserted into the circular through hole; the third station is a first bolt torque detection position, and the first torque testing mechanism is set corresponding to the third station, and the first torque testing mechanism can measure the torque of the bolt inserted into the circular through hole; the first clamping device is set corresponding to the third station, and is used to clamp the workpiece to be tested on the positioning fixture on the third station; The bolt torque testing machine further comprises a barcode scanner; the turntable is evenly distributed with three positioning fixtures along its circumferential direction; the upper surface of the workbench is evenly distributed with a first station, a second station and a third station on the same circumference; the first station is a starting position or an ending position, used to place the workpiece to be tested on the positioning fixture on the turntable or to take out the workpiece that has been tested from the positioning fixture on the turntable, and when installing the workpiece to be tested, the bolt on the workpiece to be tested is inserted into the circular through hole; the second station is a scanning position, and the barcode scanner is set corresponding to the second station, and can scan the QR code on the workpiece to be tested placed on the positioning fixture; the third station is the first bolt torque detection position, and the first torque testing mechanism is set corresponding to the third station, and the first torque testing mechanism can measure the torque of the bolt inserted into the circular through hole; the first clamping device is set corresponding to the third station, and is used to clamp the workpiece to be tested on the positioning fixture on the third station; The bolt torque testing machine also includes a second torque testing mechanism; the turntable is evenly distributed with 4 positioning fixtures along its circumferential direction; the upper surface of the positioning fixture is provided with a groove; one end of the groove is provided with a circular through hole, and the other end is provided with a long strip through hole; the fixed disk is also provided with a second clamping device; the line connecting the first clamping device to the center of the fixed disk and the line connecting the second clamping device to the center of the fixed disk form a 90-degree angle; the upper surface of the workbench is evenly distributed with a first station, a second station, a third station and a fourth station on the same circumference; the first station is a starting position or an ending position, which is used to place the workpiece to be tested on the positioning fixture on the turntable or to remove the workpiece that has been tested from the positioning fixture on the turntable. When the workpiece to be tested is installed, The two bolts on the workpiece to be measured are respectively inserted into the circular through hole and the elongated through hole; the second station is a scanning position, and the barcode scanner is arranged corresponding to the second station, and can scan the QR code on the workpiece to be measured placed on the positioning fixture; the third station is a first bolt torque detection position, and the first torque inspection mechanism is arranged corresponding to the third station, and the first torque inspection mechanism can measure the torque of the bolt inserted into the circular through hole; the fourth station is a second bolt torque detection position, and the second torque inspection mechanism is arranged corresponding to the fourth station, and the second torque inspection mechanism can measure the torque of the bolt inserted into the elongated through hole; the second clamping device is arranged corresponding to the fourth station, and is used to clamp the workpiece to be measured on the positioning fixture on the fourth station; A first lifting cylinder is provided at the third workstation C on the workbench, and the first torque testing mechanism is vertically provided on the side of the first lifting cylinder; the first torque testing mechanism passes through the workbench of the frame and is connected to the piston rod of the first lifting cylinder; the piston rod of the first lifting cylinder can perform vertical lifting movement; the lifting and lowering of the piston rod of the first lifting cylinder can drive the first torque testing mechanism to perform corresponding lifting and lowering; A slide rail and an electric cylinder are provided at the fourth workstation on the workbench; a second lifting cylinder is provided on the slide rail; the second lifting cylinder can move horizontally along the slide rail; the output shaft of the electric cylinder is connected to the side of the second lifting cylinder; the extension and retraction of the output shaft of the electric cylinder can drive the second lifting cylinder to move back and forth horizontally along the slide rail; the piston rod of the second lifting cylinder can move up and down in the vertical direction; the second torque testing mechanism is vertically arranged on the side of the second lifting cylinder; the second torque testing mechanism is connected to the piston rod of the second lifting cylinder after passing through the workbench of the frame; the lifting and lowering of the piston rod of the second lifting cylinder can drive the second torque testing mechanism to move up and down accordingly; The bolt torque testing machine also includes a control center, and the barcode scanner is electrically connected to the control center; the barcode scanner can read the barcode information on the workpiece to be tested on the positioning tooling corresponding to the second workstation, and transmit the read barcode information to the control center; the first torque testing mechanism is electrically connected to the control center, and the first torque testing mechanism can transmit the bolt torque detection result to the control center; the second torque testing mechanism is electrically connected to the control center, and the second torque testing mechanism can also transmit the bolt torque detection result to the control center.

Images