Strength detection device for precision hardware

Abstract

According to the precision hardware strength detection device disclosed by the invention, the hardware tensile device, the hardware anti-distortion device, the hardware anti-compression device and the hardware anti-shearing device are arranged to simultaneously carry out tensile strength detection, anti-distortion strength detection, anti-compression strength detection and anti-shearing strength detection on hardware; the problem that in the prior art, only pure tensile or compression resistance detection can be conducted on hardware is solved, the detection device and the control device are arranged, tensile detection and distortion resistance detection are conducted on the hardware, and meanwhile the boundary value from elastic deformation to plastic deformation of the hardware can be detected; therefore, the elastic deformation degree and the plastic deformation degree of the hardware under the condition of various complex forces can be determined.

Description

Technical Field

[0001] The invention relates to the field of strength detection, and in particular to a precision hardware strength detection device. Background Art

[0002] The strength test of hardware refers to the ability of hardware materials to resist deformation and damage under the action of external forces. It can be divided into tensile, compressive, bending, twisting and shear strength test processing. Traditional hardware mainly uses copper accessories, while modern hardware often adds aluminum and titanium alloys to reduce weight and not reduce the strength of hardware too much under the premise of weight reduction. As we all know, the strength of aluminum and titanium alloys is not as strong as that of copper. Therefore, it is particularly necessary to test the strength of new hardware. The utility model patent publication with announcement number CN218067468U A hardware stamping die punching needle strength testing device has been developed. Punches are placed on the top of the mounting block, and the motor is controlled to drive the rotating ring to rotate. When the pressure block is located directly above the mounting block, the piston rod of the oil cylinder is controlled to drive the pressure block to press down to test the compressive strength of the entire hardware. The invention patent with publication number CN115219168A discloses a hardware manufacturing strength testing device. The movable block slides by sliding, and the sliding of the movable block causes the extrusion plate to move to fix the hardware outside the bearing platform. The sliding of the sliding wheel and the rotating wheel two causes the sliding of the sliding plate. The movement makes the stress plate apply a certain specification of pressure to the fastened hardware, so as to detect the compressive strength of the hardware. The utility model patent with publication number CN217331589U discloses a hardware stamping die punch needle strength detection device. By controlling the extension of the hydraulic cylinder, the push plate can be driven to move to the right. At the same time, the push plate can drive the pressure sensor and the pressure block to move to the right, so that the right side of the pressure block can contact the surface of the punch needle body placed vertically in the placement seat, and the pressure block can continuously contact the upper surface of the punch needle body under the action of the continuous extension of the hydraulic cylinder. Pressure is applied to the end, and through the settings of pressure sensors, infrared rangefinders and display screens, the pressure on the punch needle body and the distance of displacement caused by deformation when under pressure can be detected; it can be seen that the existing hardware detection parts firstly detect traditional copper hardware, and do not detect new hardware with aluminum-titanium alloy. Secondly, simple compression resistance tests are carried out during the detection, and the compression, bending, torsion and shear strength tests of the hardware are not involved. The detection device in the prior art can only perform one test, and cannot perform multiple tests at the same time.

[0003] 1. Technical issues to be solved

[0004] In order to solve the above technical problems, the present invention provides a precision hardware strength detection device (II) technical solution

[0005] A precision hardware strength detection device comprises a hardware anti-tension device, a hardware anti-distortion device, a hardware anti-compression device and a hardware anti-shear device.

[0006] Furthermore, the hardware anti-pulling device includes upper and lower hardware pulling devices, and the upper hardware pulling device includes a pulling rail I, an upper pulling unit I, an upper pulling unit II, and an upper pulling unit III; the three upper pulling units are arranged horizontally on the pulling rail I, and the upper pulling unit I, the upper pulling unit II, and the upper pulling unit III all include a sliding block, a sliding cavity, a driving gear, a rack, and a clamping rod.

[0007] Furthermore, the sliding blocks of the three pulling units are hollow inside, and symmetrical through holes are arranged on the side walls on both sides of the sliding blocks. The pulling slide rail passes through the through holes of the three sliding blocks to connect the three sliding blocks, and the three sliding blocks can slide left and right on the pulling slide rail.

[0008] Furthermore, the bottoms of the three sliding blocks are fixedly connected to a sliding cavity, the interior of the sliding cavity is hollow, and driving gears are arranged inside the three sliding cavities. The three driving gears are driven by a driving shaft driven by a driving device, and the three driving gears are meshed with racks. Driven by the driving gears, the racks in the three sliding cavities move up and down.

[0009] Furthermore, the bottoms of the three racks are connected to connecting blocks, and the bottoms of the connecting blocks are provided with upper and lower connecting rails, the upper connecting rail is provided with sliders I and II, and the lower connecting rail is provided with sliders III and IV, the positions of sliders I and III are on the same horizontal line, the positions of sliders II and IV are on the same horizontal line, sliders I and III are connected with clamping rods I, sliders II and IV are connected with clamping rods II, and clamping rods I and II can clamp the upper part of the hardware.

[0010] Furthermore, the lower hardware pulling device includes a pulling rail II, a lower pulling unit I, a lower pulling unit II, and a lower pulling unit III; the three lower pulling units are arranged laterally on the pulling rail II, and the lower pulling unit I, the lower pulling unit II, and the lower pulling unit III all include a sliding block, a sliding cavity, a driving gear, a rack, and a clamping rod.

[0011] Furthermore, the arrangement of the sliding block, the sliding cavity, the driving gear, the rack, and the clamping rod is the same as that of the upper pulling unit.

[0012] Furthermore, the upper pulling unit and the lower pulling unit correspond one to one, and the clamping rods of the upper and lower pulling units clamp the upper and lower parts of the hardware respectively. When the tensile strength of the hardware needs to be tested, the upper and lower pulling units are driven by the gears and racks inside the upper and lower pulling units to pull in opposite directions, thereby pulling the hardware in opposite directions up and down to test the tensile strength of the hardware.

[0013] Furthermore, the hardware anti-twisting device includes an upper circular ring and a lower circular ring, which are symmetrically arranged. The upper circular ring is provided with a circular twisting slide rail I along the circumferential direction of the inner side of the circular ring, and the lower circular ring is provided with a circular twisting slide rail II along the circumferential direction of the inner side of the circular ring.

[0014] Furthermore, twisting sliders I are provided at the left and right ends of the pulling slide rail I, and the twisting sliders I at both ends are respectively arranged in the circular twisting slide rail I of the upper circular ring.

[0015] Furthermore, twisting sliders II are arranged at the left and right ends of the pulling slide rail II, and the twisting sliders II at the two ends are respectively arranged in the circular twisting slide rail II of the lower circular ring.

[0016] Furthermore, a detection device, a control device and a twisting drive device are also provided. The control device controls the twisting drive device to drive the twisting slider I and the twisting slider II to move counterclockwise and clockwise respectively along the circumferential direction in the pulling slide rails I and II, thereby driving the three upper pulling units and the three lower pulling units on the pulling slide rails I and II to move clockwise and counterclockwise respectively, and the twisting drive device controls the rotation speed of the upper pulling unit and the lower pulling unit respectively.

[0017] Furthermore, while the upper and lower pulling units rotate clockwise and counterclockwise respectively, the upper and lower pulling units pull the hardware, and the deformation amount E along the circumferential direction of the hardware between the maximum elastic deformation of torsion and the plastic deformation and the deformation amount A perpendicular to the ground are detected and recorded by the detection device.

[0018] Furthermore, the hardware pressure-resistant device includes a pressure-resistant device I and a pressure-resistant device II, both of which are arranged between the upper and lower hardware pulling devices. The pressure-resistant device I is arranged at one side of the middle gap of the upper and lower pulling units facing one side of the hardware; the pressure-resistant device II is arranged at the other side of the middle gap of the upper and lower pulling units facing the other side of the hardware.

[0019] Furthermore, the pressure-resistant device I includes a pressure-resistant block I, the interior of the pressure-resistant block I is a cavity, a pressure-resistant cylinder I is arranged in the cavity, the pressure-resistant cylinder I is connected to a telescopic rod I, one end of the telescopic rod I is connected to a pressure rod, and the width of the pressure rod is equal to the width of the hardware.

[0020] Furthermore, the pressure-resistant device II includes a pressure-resistant block II, the interior of the pressure-resistant block II is a cavity, a plurality of pressure-resistant cylinders II are arranged in the cavity, the plurality of pressure-resistant cylinders II are connected to a plurality of telescopic rods II, one end of each telescopic rod II is connected to an impact block, and a plurality of impact protrusions are arranged on one end of each impact block.

[0021] Furthermore, two anti-shear devices are provided, and the two anti-shear devices are arranged on both sides of the gap between the anti-pressure device I and the anti-pressure device II, and the anti-shear device includes a rotating shaft, a swing ring, a swing block, and a shear impact head; a through hole is provided at the center of the swing ring, and the rotating shaft is connected to the swing ring through the through hole, and the lower end of the swing ring is fixedly connected to the swing block, and the lower end of the swing block is fixedly connected to the shear impact head, and the shear impact heads of the two anti-shear devices perform shear impact on the hardware through the swing of the swing ring.

[0022] (3) Beneficial effects;

[0023] The present invention simultaneously performs tensile, torsional, compressive and shearing strength tests on hardware by arranging a hardware tensile device, a hardware torsional anti-device, a hardware compressive device and a hardware anti-shearing device, thereby solving the problem in the prior art that only simple tensile or compressive tests can be performed on hardware. Moreover, by arranging a detection device and a control device, the boundary value from elastic deformation to plastic deformation of the hardware can be detected while tensile and torsional tests are performed on the hardware, thereby determining the elastic deformation and plastic deformation degree of the hardware under complex multiple composite forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Attached Figure 1 Schematic diagram of the hardware tensile device.

[0025] Attached Figure 2 Schematic diagram of the anti-twisting device for hardware.

[0026] Attached Figure 3 It is a schematic diagram of a hardware strength testing device.

[0027] Attached Figure 4 Schematic diagram of the sliding cavity

[0028] 1-pulling slide rail Ⅰ, 2-sliding block, 3-sliding cavity, 4-upper circular ring, 5-lower circular ring, 6-connecting block, 7-clamping rod (Ⅰ-Ⅱ), 8-anti-pressure block Ⅰ, 9-telescopic rod Ⅰ, 10-pressure rod, 11-anti-pressure block Ⅱ, 12-telescopic rod Ⅱ, 13-impact block, 14-impact protrusion, 15-rotating shaft, 16-swinging ring, 17-swinging block, 18-shear impact head, 19-driving gear, 20-rack, 21-upper connecting slide rail, 22-lower connecting slide rail, 23-upper pulling unit Ⅰ, 24-upper pulling unit Ⅱ, 25-upper pulling unit Ⅲ, 26-lower pulling unit Ⅰ, 27-lower pulling unit Ⅱ, 28-lower pulling unit Ⅲ, 29-pulling slide rail Ⅱ. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] A precision hardware strength detection device comprises a hardware anti-tension device, a hardware anti-twisting device, a hardware anti-compression device, and a hardware anti-shear device. The hardware anti-tension device comprises an upper and lower hardware pulling device. The upper hardware pulling device comprises a pulling slide rail I (1), an upper pulling unit I (23), an upper pulling unit II (24), and an upper pulling unit III (25). The three upper pulling units are arranged transversely on the pulling slide rail I (1). The upper pulling unit I, the upper pulling unit II, The upper pulling unit III includes a sliding block 2, a sliding cavity 3, a driving gear 19, a rack 20, and a clamping rod 7. The interior of the sliding blocks 2 of the three pulling units is hollow. The side walls on both sides of the sliding blocks 2 are provided with symmetrical through holes. The pulling slide rail I (1) passes through the through holes of the three sliding blocks to connect the three sliding blocks 2. The three sliding blocks 2 can slide left and right on the pulling slide rail I (1). The bottoms of the three sliding blocks 2 are fixedly connected to the sliding cavity 3. The interior of the sliding cavity 3 is hollow. The interiors of the three sliding cavities 3 are provided with driving gears 19. The three driving gears 19 are driven by a driving device to drive a driving shaft. The three driving gears 19 are meshed with racks 20. Under the drive of the driving gear 19, the racks 20 in the three sliding cavities 3 move up and down. The bottoms of the three racks 20 are connected to a connecting block 6. The bottom of the connecting block 6 is provided with two upper and lower connecting rails. The upper connecting rail 21 is provided with a sliding block I and a sliding block II, and the lower connecting rail 22 is provided with a sliding block. The sliders Ⅰ and Ⅲ are located at the same horizontal line, the sliders Ⅱ and Ⅳ are located at the same horizontal line, the sliders Ⅰ and Ⅲ are connected with a clamping rod Ⅰ (7), the sliders Ⅱ and Ⅳ are connected with a clamping rod Ⅱ (7), the clamping rod Ⅰ (7) and the clamping rod Ⅱ (7) can clamp the upper part of the hardware, and the lower hardware pulling device includes a pulling slide rail Ⅱ (29), a lower pulling unit Ⅰ (26), a lower pulling unit Ⅱ (27), and a lower pulling unit Ⅲ (28);The three lower pull units are arranged horizontally on the pull rail II (29). The lower pull unit I (26), the lower pull unit II (27), and the lower pull unit III (28) all include a sliding block 2, a sliding cavity 3, a driving gear 19, a rack 20, and a clamping rod 7. The sliding block 2, the sliding cavity 3, the driving gear 19, the rack 20, and the clamping rod 7 are arranged in the same manner as the upper pull unit. The upper pull unit and the lower pull unit correspond to each other one by one. The clamping rods of the upper and lower pull units clamp the upper and lower parts of the hardware respectively. When the tensile strength of the hardware needs to be tested, the upper and lower pull units are used to test the tensile strength of the hardware. The gear and rack drive the upper and lower pulling units to pull in opposite directions, thereby pulling the hardware in opposite directions to test the tensile strength of the hardware. The hardware anti-twisting device includes an upper circular ring 4 and a lower circular ring 5. The upper and lower circular rings are symmetrically arranged. The upper circular ring is provided with a circular twisting slide rail I along the circumferential direction of the inner side of the circular ring. The lower circular ring is provided with a circular twisting slide rail II along the circumferential direction of the inner side of the circular ring. Twisting sliders I are provided at the left and right ends of the pulling slide rail I (1). The twisting sliders I at both ends are respectively arranged in the circular twisting slide rail I of the upper circular ring. The pulling slide rail II (29 ) are provided with twisting sliders II at the left and right ends, and the twisting sliders II at the two ends are respectively arranged in the circular twisting slide rail II of the lower circular ring, and are also provided with a detection device, a control device and a twisting driving device. The control device controls the twisting driving device to drive the twisting sliders I and the twisting sliders II to move counterclockwise and clockwise along the circumferential direction in the pulling slide rails I (1) and the pulling slide rails II (29), respectively, so as to drive the three upper pulling units and the three lower pulling units on the pulling slide rails I (1) and the pulling slide rails II (29) to move clockwise and counterclockwise respectively, and the twisting driving device respectively controls the upper pulling units The upper and lower pulling units are used to control the rotation speed. When the upper and lower pulling units rotate clockwise and counterclockwise respectively, the upper and lower pulling units pull the hardware. The deformation amount E of the hardware along the circumferential direction between the maximum elastic deformation and the plastic deformation of the torsion and the deformation amount A perpendicular to the ground are detected and recorded by the detection device. The hardware anti-pressure device includes an anti-pressure device I and an anti-pressure device II. The anti-pressure device I and the anti-pressure device II are both arranged between the upper and lower hardware pulling devices. The anti-pressure device I is arranged at one side of the middle gap of the upper and lower pulling units facing one side of the hardware.The pressure-resistant device II is arranged at the other side of the middle gap of the upper and lower pulling units, facing the other side of the hardware. The pressure-resistant device I includes a pressure-resistant block I (8). The interior of the pressure-resistant block I (8) is a cavity. A pressure-resistant cylinder I is arranged in the cavity. The pressure-resistant cylinder I is connected to a telescopic rod I (9). One end of the telescopic rod I (9) is connected to a pressure rod (10). The width of the pressure rod (10) is equal to the width of the hardware. The pressure-resistant device II includes a pressure-resistant block II (11). The interior of the pressure-resistant block II (11) is a cavity. A plurality of pressure-resistant cylinders II are arranged in the cavity. The plurality of pressure-resistant cylinders II are connected to a plurality of telescopic rods II (12). Each telescopic rod II (12) One end of each of the impact blocks (13) is connected to an impact block (13), one end of each impact block (13) is provided with a plurality of impact protrusions (14), and two anti-shear devices are provided, the two anti-shear devices are provided on both sides of the gap between the anti-pressure device I and the anti-pressure device II, and the anti-shear device comprises a rotating shaft 15, a swing ring 16, a swing block 17, and a shear impact head 18; a through hole is provided at the center of the swing ring, the rotating shaft is connected to the swing ring through the through hole, the lower end of the swing ring is fixedly connected to the swing block, the lower end of the swing block is fixedly connected to the shear impact head, and the shear impact heads of the two anti-shear devices perform shear impact on the hardware through the swing of the swing ring. ;

Claims

1. A precision hardware strength detection device, including a hardware tensile device, a hardware anti-distortion device, a hardware compression device, and a hardware anti-shear device. The hardware tensile device includes an upper and lower hardware pulling device. The upper hardware pulling device includes a pulling slide rail I, an upper pulling unit I, an upper pulling unit II, and an upper pulling unit III. The three upper pulling units are arranged horizontally on the pulling slide rail I. The upper pulling unit I, the upper pulling unit II, and the upper pulling unit III all include a sliding block, a sliding cavity, a driving gear, a rack, and a clamping rod. The three pulling units The sliding blocks of the element are all hollow inside, and symmetrical through holes are set on the side walls on both sides of the sliding blocks. The pulling slide rail I passes through the through holes of the three sliding blocks to connect the three sliding blocks. The three sliding blocks can slide left and right on the pulling slide rail. The bottoms of the three sliding blocks are fixedly connected to the sliding cavity. The interior of the sliding cavity is hollow. The interiors of the three sliding cavities are all provided with driving gears. The three driving gears are driven by the driving shaft driven by the driving device. The three driving gears are meshed with racks. Driven by the driving gears, the racks in the three sliding cavities move up and down.

2. The precision hardware strength detection device according to claim 1 is characterized in that: The bottoms of the three racks are connected with connecting blocks, and the bottoms of the connecting blocks are provided with upper and lower connecting rails, the upper connecting rail is provided with sliders Ⅰ and Ⅱ, and the lower connecting rail is provided with sliders Ⅲ and Ⅳ, the positions of sliders Ⅰ and Ⅲ are on the same horizontal line, the positions of sliders Ⅱ and Ⅳ are on the same horizontal line, sliders Ⅰ and Ⅲ are connected with clamping rods Ⅰ, and sliders Ⅱ and Ⅳ are connected with clamping rods Ⅱ, and clamping rods Ⅰ and Ⅱ can clamp the upper part of the hardware.

3. The precision hardware strength detection device according to claim 2 is characterized in that: The lower hardware pulling device includes a pulling slide rail II, a lower pulling unit I, a lower pulling unit II, and a lower pulling unit III; the three lower pulling units are arranged horizontally on the pulling slide rail II, and the lower pulling unit I, the lower pulling unit II, and the lower pulling unit III all include a sliding block, a sliding cavity, a driving gear, a rack, and a clamping rod.

4. The precision hardware strength detection device according to claim 3 is characterized in that: The setting method of the sliding block, sliding cavity, driving gear, rack, and clamping rod is the same as that of the upper pulling unit. The upper pulling unit and the lower pulling unit correspond one to one. The clamping rods of the upper and lower pulling units clamp the upper and lower parts of the hardware respectively. When it is necessary to test the tensile strength of the hardware, the upper and lower pulling units are driven by the gears and racks inside the upper and lower pulling units to pull in opposite directions, thereby pulling the hardware in opposite directions up and down to test the tensile strength of the hardware.

5. The precision hardware strength detection device according to claim 4 is characterized in that: The hardware anti-twisting device includes an upper circular ring and a lower circular ring, which are symmetrically arranged. The upper circular ring is provided with a circular twisting slide rail I along the circumferential direction of the inner side of the circular ring, and the lower circular ring is provided with a circular twisting slide rail II along the circumferential direction of the inner side of the circular ring. Twisting sliders I are provided at the left and right ends of the pulling slide rail I, and the twisting sliders I at both ends are respectively arranged in the circular twisting slide rail I of the upper circular ring, and twisting sliders II are provided at the left and right ends of the pulling slide rail II, and the twisting sliders II at both ends are respectively arranged in the circular twisting slide rail II of the lower circular ring.

6. The precision hardware strength detection device according to claim 5, characterized in that: A detection device, a control device and a twisting drive device are also provided. The control device controls the twisting drive device to drive the twisting slider I and the twisting slider II to move counterclockwise and clockwise respectively along the circumferential direction in the pulling slide rails I and II, thereby driving the three upper pulling units and the three lower pulling units on the pulling slide rails I and II to move clockwise and counterclockwise respectively, and the twisting drive device controls the rotation speed of the upper pulling unit and the lower pulling unit respectively.

7. The precision hardware strength detection device according to claim 6 is characterized in that: While the upper and lower pulling units rotate clockwise and counterclockwise respectively, the upper and lower pulling units pull the hardware, and the deformation amount E along the circumferential direction of the hardware between the maximum elastic deformation of torsion and the plastic deformation and the deformation amount A perpendicular to the ground are detected and recorded by the detection device.

8. The precision hardware strength detection device according to claim 7 is characterized in that: The hardware anti-pressure device includes an anti-pressure device I and an anti-pressure device II. Both the anti-pressure device I and the anti-pressure device II are arranged between the upper and lower hardware pulling devices. The anti-pressure device I is arranged at one side of the middle gap of the upper and lower pulling units facing one side of the hardware; the anti-pressure device II is arranged at the other side of the middle gap of the upper and lower pulling units facing the other side of the hardware.

9. The precision hardware strength detection device according to claim 8, characterized in that: The pressure-resistant device I includes a pressure-resistant block I, which has a cavity inside and a pressure-resistant cylinder I arranged inside the cavity. The pressure-resistant cylinder I is connected to a telescopic rod I, one end of which is connected to a pressure rod, and the width of the pressure rod is equal to the width of the hardware. The pressure-resistant device II includes a pressure-resistant block II, which has a cavity inside and multiple pressure-resistant cylinders II arranged inside the cavity. Multiple pressure-resistant cylinders II are connected to multiple telescopic rods II, one end of each telescopic rod II is connected to an impact block, and one end of each impact block is provided with multiple impact protrusions.

10. The precision hardware strength detection device according to claim 9, characterized in that: Two anti-shear devices are also provided, and the two anti-shear devices are arranged on both sides of the gap between the anti-pressure device I and the anti-pressure device II. The anti-shear device includes a rotating shaft, a swing ring, a swing block, and a shear impact head. A through hole is provided in the center of the swing ring, and the rotating shaft is connected to the swing ring through the through hole. The lower end of the swing ring is fixedly connected to the swing block, and the lower end of the swing block is fixedly connected to the shear impact head. The shear impact heads of the two anti-shear devices perform shear impact on the hardware through the swing of the swing ring.

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