CN118224945A - Pin full-size measuring method in press riveting process, pin press riveting method and press riveting device - Google Patents
Pin full-size measuring method in press riveting process, pin press riveting method and press riveting device Download PDFInfo
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- CN118224945A CN118224945A CN202410644294.5A CN202410644294A CN118224945A CN 118224945 A CN118224945 A CN 118224945A CN 202410644294 A CN202410644294 A CN 202410644294A CN 118224945 A CN118224945 A CN 118224945A
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Abstract
The invention discloses a pin full-size measuring method, a pin press-riveting method and a pin press-riveting device in the press-riveting process, wherein the pin full-size measuring method comprises the following steps of measuring the size of a first calibration block and calibrating the initial value of a first displacement sensor; measuring the size of the second calibration block and calibrating the initial value of the second displacement sensor; measuring a first size and a second size of the pin before press riveting, comparing the obtained first measurement value of the first displacement sensor with an initial value of the first size, comparing the obtained first measurement value of the second displacement sensor with the initial value of the first displacement sensor, and if the difference between the first measurement value of the first displacement sensor and the initial value is within a first size error range of the pin and the difference between the first measurement value of the second displacement sensor and the initial value is within a second size error range of the pin, performing the next step; otherwise, stopping the measurement. The full-size measuring method for the pin can realize full-size measurement of the pin and ensure better connection strength between the first plate and the second plate.
Description
Technical Field
The invention belongs to the technical field of pin press riveting, and particularly relates to a full-size pin measuring method, a pin press riveting method and a pin press riveting device in a press riveting process.
Background
When the pin is clinched, three dimensions of the pin are involved: h1, H2 and H3. Wherein H1 is the total height before the pin is pressed and riveted, H2 is the height exposed out of the two plates before the pin is pressed and riveted, and H3 is the height exposed out of the two plates after the pin is pressed and riveted. In the prior art, full-size detection of the pins H1, H2 and H3 is difficult, and most of the data only one or two of the data are detected.
However, if the pin cannot be detected in full size, the following problems may occur:
if the H1 size is not detected, whether the pin height of the incoming material is qualified or not cannot be determined, and the incoming material state cannot be ensured;
If the H2 size is not detected, whether the total thickness of the two connected plates is qualified or whether the exposed height of the pin before press riveting is qualified cannot be determined, so that the strength of the two plates after connection is influenced;
If the H3 size is not detected, whether the exposed height of the pin after press riveting is qualified or not cannot be determined, and the strength of the two plates after connection can be influenced.
Therefore, full-size inspection of the staked pin is critical.
Disclosure of Invention
In view of the above, in order to overcome the defects of the prior art, the invention aims to provide a full-size pin measuring method, a pin riveting method and a pin riveting device in the riveting process, which can perform full-size detection on the pin in the riveting process and are beneficial to ensuring better connection strength between two plates.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
an object of the present invention is to provide a method for measuring the full size of a pin in a press riveting process, comprising the steps of,
Step 1: measuring the size of a first calibration block, and calibrating an initial value of a first displacement sensor of the press riveting device by the first calibration block;
step 2: measuring the size of a second calibration block, and calibrating an initial value of a second displacement sensor of the press riveting device by the second calibration block;
Step 3: determining a first size error range and a second size error range of a pin, measuring the first size and the second size of the pin before riveting, and recording a first measurement value fed back by the first displacement sensor and a first measurement value fed back by the second displacement sensor;
Step 4: comparing the first measured value fed back by the first displacement sensor with the initial value of the first displacement sensor, comparing the first measured value fed back by the second displacement sensor with the initial value of the second displacement sensor, and if the difference between the first measured value fed back by the first displacement sensor and the initial value of the first displacement sensor is within a first size error range of the pin, and if the difference between the first measured value fed back by the second displacement sensor and the initial value of the second displacement sensor is within a second size error range of the pin, performing the next step; otherwise, stopping measuring the pin;
step 5: and (3) riveting the pin, measuring a third dimension of the pin after the riveting is completed, and completing full-dimension measurement of the pin.
In the invention, the first calibration block is measured by metering and is the same as the theoretical height of the pin, and is used for calibrating the theoretical height of the pin and the initial value of the first displacement sensor, wherein the initial value of the first displacement sensor is the height of the first calibration block, namely the theoretical height of the pin. Similarly, the second calibration block is also measured by metering and has the same theoretical height as the part of the upper end part of the second calibration block outside the first plate and the second plate before the pin is not riveted, and is used for calibrating the theoretical height of the part of the upper end part of the second calibration block outside the first plate and the second plate before the pin is not riveted and the initial value of the second displacement sensor, wherein the initial value of the second displacement sensor is the height of the second calibration block, namely the theoretical height of the part of the upper end part of the second calibration block outside the first plate and the second plate before the pin is not riveted.
According to some preferred embodiments of the present invention, the first dimension of the pin is a first measurement value fed back by the first displacement sensor, the second dimension of the pin is a first measurement value fed back by the second displacement sensor, and the third dimension of the pin is a second measurement value fed back by the second displacement sensor.
According to some preferred embodiments of the present invention, in the step 4, when the difference between the first measured value fed back by the first displacement sensor and the initial value of the first displacement sensor is located outside the first dimension error range of the pin, and/or the difference between the first measured value fed back by the second displacement sensor and the initial value of the second displacement sensor is located outside the second dimension error range of the pin, it is determined that the pin is not qualified, and the measurement is stopped. In some embodiments of the present invention, when any one of the difference between the first measured value fed back by the first displacement sensor and the initial value of the first displacement sensor and the difference between the first measured value fed back by the second displacement sensor and the initial value of the second displacement sensor is out of the corresponding size error range, the pin is judged to be a defective product when the pin is fed, and the pin cannot be used for connecting the first plate and the second plate, and the following steps cannot be continued.
According to some preferred embodiments of the invention, the first dimension of the pin is greater than the second dimension, and the second dimension of the pin is greater than the third dimension; the pin is used for connecting the first plate with the second plate, and the first plate is attached to the second plate; the first size of the pin is the height before the pin is pressed and riveted, the second size of the pin is the height of the upper end part of the pin, which is positioned outside the first plate and the second plate, before the pin is pressed and riveted, and the third size of the pin is the height of the upper end part of the pin, which is positioned outside the first plate and the second plate after the pin is pressed and riveted. After the riveting, the upper end part of the pin is positioned outside the first plate and the second plate, and the height is reduced.
Another object of the present invention is to provide a method for clinching a pin, wherein the method for clinching a pin includes steps 1 to 5 of the method for measuring a full size of a pin in the clinching process as described above, and after obtaining a third size of the pin, comparing the third size with a target third size of the pin, and completing clinching when a difference between the third size and the target third size is within a third size error range of the pin.
It is still another object of the present invention to provide a clinching apparatus for driving a pin to connect a first plate to a second plate, the full-size measurement method of the pin in the clinching process as described above using the clinching apparatus, the clinching apparatus including a ram assembly for driving the ram assembly to move toward or away from the first plate and the second plate, a driving assembly for driving the ram assembly to move toward or away from the first plate and the second plate, the ram assembly including a second displacement sensor for clinching the pin and a ram for measuring a first size of the pin, and a second displacement sensor for measuring a second size and a third size of the pin.
According to some preferred embodiments of the present invention, the pressure head assembly further comprises a first fixed block, a pressure sensor, a first fixed disc, a connecting piece and a second fixed disc, which are sequentially arranged from top to bottom, wherein the bottom of the first fixed block is fixedly connected with the top of the pressure sensor, the first fixed disc is fixedly sleeved on the periphery of the lower end of the pressure sensor, the bottom of the first fixed disc is fixedly connected with the top of the connecting piece, the connecting piece is fixedly sleeved on the periphery of the pressure head, an elastic piece is arranged between the first fixed disc and the second fixed disc, one end of the elastic piece is fixedly connected with the first fixed disc, and the other end of the elastic piece is fixedly connected with the second fixed disc; when the pin is not riveted, a gap is reserved between the second fixed disc and the upper end part of the connecting piece. The effect that pressure sensor's setting played mainly includes: the device can be used for prompting the contact of the bottom of the pressure head with the pin; in addition, the riveting device further comprises a control system which can collect and generate a pressure displacement curve of the pressure sensor in the working process, so that a worker can conveniently judge whether the material of the pin provided by the customer is correct or not according to the relevant curve, and whether the outer diameter of the pin is matched with the information provided by the customer or not when the pin is fed. The first fixed disc is fixed with the pressure sensor, and the connecting piece is used for fixing the first fixed disc and the pressure head, so that the pressure sensor and the pressure head are relatively fixed.
According to some preferred embodiments of the present invention, the pressure head assembly further comprises a compression sleeve, the compression sleeve is fixedly connected with the second fixed disc, a guide sleeve is arranged between the inner wall of the compression sleeve and the outer wall of the pressure head, the guide sleeve is slidably sleeved on the periphery of the pressure head, and the inner wall of the guide sleeve is attached to the outer wall of the pressure head; the guide sleeve is fixedly connected with the compression sleeve. In some embodiments of the invention, the pressure head is made of iron, the guide sleeve is made of copper alloy, and when the guide sleeve slides up and down relative to the pressure head, the movement friction force generated between the guide sleeve and the pressure head is small, so that the pressure head has a wear-resisting effect; and the guide sleeve can also ensure the limit of the circumferential direction of the pressure head, so as to avoid the left and right shaking of the pressure head.
According to some preferred embodiments of the present invention, the compression sleeve comprises a first sleeve portion, a second sleeve portion, a third sleeve portion and a compression portion, which are sequentially connected from top to bottom, wherein an outer wall of the first sleeve portion is fixedly connected with an inner wall of the second fixed disk, the second sleeve portion comprises a main body sleeve portion and an extension sleeve portion fixedly connected with a bottom of the main body sleeve portion, the outer wall of the extension sleeve portion is provided with a first conical surface, a diameter of the first conical surface gradually decreases from one end close to the main body sleeve portion to the other end, a connecting sleeve is fixedly arranged at a lower end of an inner portion of the main body sleeve portion, an outer wall of the connecting sleeve is attached to an inner wall of the main body sleeve portion, a bottom surface of the connecting sleeve is flush with a top surface of the extension sleeve portion, an outer diameter of the guide sleeve is equal to an inner diameter of the first sleeve portion, and the bottom of the guide sleeve is located on a top of the connecting sleeve; the inner diameter of the first sleeve part is equal to the inner diameter of the main body sleeve part, the inner diameter of the main body sleeve part is larger than the inner diameter of the connecting sleeve, the inner diameter of the connecting sleeve is larger than the inner diameter of the extending sleeve part, and the inner diameter of the extending sleeve part is equal to the inner diameter of the third sleeve part. In some embodiments of the invention, the length of the press head is greater than the length of the press sleeve, the bottom of the press sleeve is below the bottom of the press head when the pin has not been press-riveted and neither the press sleeve nor the press head is in contact with the pin, a distance is provided between the bottom of the press sleeve and the bottom of the press head, and the bottom of the press sleeve is now closer to the pin below than the bottom of the press head. When the whole pressure head assembly is gradually close to the pin downwards under the driving action of the driving assembly, the pressing part of the pressing sleeve is firstly contacted with the first plate above the second plate, the pressure head at the moment is not contacted with the pin, when the driving assembly continuously drives the pressure head assembly to move downwards and before the pressure head is not contacted with the pin, the pressing part of the pressing sleeve is abutted with the first plate, when the pressure head assembly continuously presses downwards, the first plate can apply a reaction force to the pressing part, and an elastic piece is arranged between the first fixed disc and the second fixed disc, so that the first plate can push the pressing sleeve to move upwards, the second fixed disc is driven to move upwards (in the direction close to the first fixed disc) and compress the elastic piece, and therefore the gap between the second fixed disc and the upper end part of the connecting piece is gradually reduced, namely the gap between the first fixed disc and the second fixed disc is gradually reduced, and the pressure head can be contacted with the pin; and then the driving assembly drives the pressure head to rivet the pin under the driving action of the driving assembly. In addition, the external diameter of the guide sleeve is equal to the internal diameter of the first sleeve part, namely, the external diameter of the guide sleeve is equal to the internal diameter of the main body sleeve part, and the bottom of the guide sleeve is positioned on the top of the connecting sleeve, so that the fixed connection between the guide sleeve and the compression sleeve can be ensured.
According to some preferred embodiments of the present invention, the pressure head penetrates through the thickness direction of the connecting piece and the second fixing disc, the pressure head comprises a first cylinder, a second cylinder and a third cylinder which are sequentially connected from top to bottom, the outer diameter of the first cylinder is larger than that of the second cylinder, the outer diameter of the second cylinder is larger than that of the third cylinder, the top of the first cylinder is abutted to the bottom of the pressure sensor, the connecting piece is sleeved on the outer periphery of the second cylinder, the bottom surface of the first cylinder is attached to the top surface of the connecting piece, the guide sleeve is sleeved on the outer periphery of the second cylinder, and the end part of the third cylinder, which is far away from the second cylinder, is located inside the third sleeve part and the pressing part. The top of the first cylinder is arranged to be abutted against the bottom of the pressure sensor, so that when the pressure head contacts with the pin and rivets the pin, the pressure sensor can receive the reaction force exerted by the pin on the pressure head, and therefore a worker can conveniently judge when the pressure head starts to contact with the pin from the pressure displacement curve of the pressure sensor.
According to some preferred embodiments of the present invention, the pressing part includes at least two pressing members disposed at uniform intervals, all the pressing members are enclosed to form a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is located above the second accommodating cavity, an axial line of the first accommodating cavity coincides with an axial line of the second accommodating cavity, a diameter of the first accommodating cavity is smaller than a diameter of the second accommodating cavity and smaller than an outer diameter of an upper end portion of the pin, and a diameter of the second accommodating cavity is larger than an outer diameter of the upper end portion of the pin. The second accommodation cavity formed by enclosing between each compressing piece is used for ensuring that the compressing sleeve can directly pass through the pin to be contacted with the first plate in the process of moving downwards to be close to the pin, but is not contacted with the pin, so that the compressing sleeve is prevented from abutting the pin, and the pressure sensor can display a pressure displacement curve after receiving a pressure signal, but the pressure signal is not the signal of the pressure head for beginning to rivet the pin, and an error prompt is caused when a worker reads data.
According to some preferred embodiments of the invention, the first displacement sensor is fixedly connected to the drive assembly, and the second displacement sensor is fixedly connected to the pressure sensor; the second fixed disc is fixedly provided with an extension rod, when the pressing sleeve is far away from the pin, the sensing end of the second displacement sensor is attached to the top surface of the extension rod, and when the pressing sleeve or the pressing head is in contact with the pin, the sensing end of the second displacement sensor is abutted to the top surface of the extension rod. In the invention, when the pressure sensor monitors pressure feedback and the pressure head just starts to rivet the pin, the first measurement value of the first displacement sensor is the first size of the pin, the first measurement value of the second displacement sensor is the second size of the pin, and the second measurement value of the second displacement sensor when the pressure head completes the riveting of the pin is the third size of the pin. In the working process, a worker generally knows a target value of a third dimension after the pin is riveted in advance, a theoretical value of a distance that the press head needs to move downwards just after contacting with the pin can be calculated according to a first measurement value of the second displacement sensor and the target value of the third dimension, riveting is completed after the drive assembly is controlled to drive the press head assembly to move downwards to the theoretical value of the distance, and at the moment, a second measurement value fed back by the second displacement sensor is the actually measured third dimension after the pin is riveted.
In the invention, a first displacement sensor is arranged on a driving cylinder of a driving assembly to sense the displacement change of a pressure head, and the cylinder magnetic ring sensing principle is utilized. The piston of the driving cylinder is provided with a magnetic ring, a magnetic sensor, namely a first displacement sensor, is fixedly arranged at a certain position outside the piston, when the piston moves in the driving cylinder, the magnetic ring also moves along with the piston, and when the magnetic ring moves to the vicinity of the first displacement sensor, the first displacement sensor senses the magnetic field change of the magnetic ring, so that an electric signal is generated.
According to some preferred embodiments of the present invention, the driving assembly includes a driving cylinder and a piston rod, a matching rod is disposed between the piston rod and the first fixed block, the matching rod includes a first rod portion, a second rod portion and a third rod portion which are sequentially connected from top to bottom, the outer diameters of the first rod portion and the third rod portion are both larger than the outer diameter of the second rod portion, the top of the first rod portion is fixedly connected with the piston rod, the bottom surface of the third rod portion is provided with a second conical surface, and the diameter of the second conical surface gradually decreases from one end close to the second rod portion to the other end; the first fixing block comprises a first block part and a fixing table, a third conical surface is arranged on the top surface of the fixing table, and the third conical surface is matched with the second conical surface; the setting of second conical surface and third conical surface can guarantee that the matching rod can produce the sphere on the fixed station and float, and not produce the rigid contact with the fixed station, can avoid driving the piston of cylinder because the incomplete concentric side force that receives from top to bottom to play the guard action to whole drive assembly.
The first block portion is provided with a first through groove and a second through groove penetrating through the first block portion in the height direction, the fixing table is accommodated in the second through groove, the first through groove is located above the second through groove, the axial lead of the first through groove is coincident with that of the second through groove, the width of the first through groove is smaller than that of the second through groove and larger than the outer diameter of the second rod portion, the height of the first through groove is smaller than that of the second rod portion, the outer diameters of the first rod portion and the third rod portion are both larger than that of the first through groove, and the width of the second through groove is larger than that of the third rod portion. The setting of the first logical groove of first piece portion and second logical groove and mutually support between and the matching rod, the cooperation setting between recombination matching rod and the fixed station can play spacing effect to the matching rod, guarantees that the matching rod can not break away from the fixed station, and the matching rod can produce the sphere with respect to the fixed station again simultaneously and float.
According to some preferred embodiments of the present invention, the device further comprises a fixed frame and a sliding rail fixedly arranged on the fixed frame, the driving assembly is fixedly connected with the fixed frame, the pressure head assembly further comprises a second fixed block fixedly connected with the first fixed block, a sliding block is fixedly arranged on the second fixed block, and the sliding block is in sliding connection with the sliding rail. The sliding rail and the sliding block are arranged, so that the guiding effect can be achieved on the movement of the whole pressure head assembly under the driving effect of the driving assembly, the pressure head assembly is prevented from swinging or swaying after moving, and the riveting precision is guaranteed.
In some embodiments of the present invention, the press riveting device further includes a support platform and a carrier platform, wherein the support platform is located below the pins, the support platform is fixedly connected with the carrier platform, the support platform is used for supporting the pins, and the carrier platform is used for placing and supporting the first plate and the second plate.
Compared with the prior art, the invention has the following advantages: the full-size pin measuring method, the pin riveting method and the pin riveting device in the riveting process realize full-size detection of the pin in the riveting process, and the measurement of the first size of the pin can determine whether the height of the pin for feeding is qualified or not and ensure the feeding state; the measurement of the second dimension can determine whether the total thickness of the first plate and the second plate which are connected is qualified or not, and determine whether the exposed height of the pin before press riveting is qualified or not, so that the better connection strength between the first plate and the second plate is ensured; the third dimension measurement can determine whether the exposed height of the pin after press riveting is qualified or not, and the strength of the first plate after being connected with the second plate can be further ensured; the invention can realize full-size measurement of pin press riveting, simultaneously ensure that all relevant data have traceability, and provide convenience and guarantee for clients.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view showing a perspective structure of a riveting device before riveting pins according to a preferred embodiment of the present invention;
FIG. 2 is a schematic side view of a press riveting device before riveting pins according to a preferred embodiment of the present invention;
FIG. 3 is a schematic view of the cross-sectional structure in the direction A-A in FIG. 2;
FIG. 4 is a schematic view of a part of the enlarged structure of the portion B in FIG. 3;
FIG. 5 is a schematic side view of a part of the press riveting device when the press head just contacts the pin in the preferred embodiment of the invention;
FIG. 6 is a schematic view of a partial cross-sectional structure in the direction C-C in FIG. 5;
FIG. 7 is a schematic view showing a partial cross-sectional structure of a press-riveting device after press-riveting pins according to a preferred embodiment of the present invention;
FIG. 8 is a schematic top view of a first plate and a second plate connected after the pins are clinched by the clinching device according to the preferred embodiment of the present invention;
Wherein, the reference numerals are as follows:
The driving component-1, the driving cylinder-11, the piston rod-12, the matching rod-13, the first rod-131, the second rod-132, the third rod-133, the second conical surface-M2, the first displacement sensor-2, the pressing head component-3, the first fixed block-31 a, the first block-311, the first through slot-C1, the second through slot-C2, the fixed table-312, the third conical surface-M3, the second fixed block-31 b, the sliding block-31C, the pressure sensor-32, the first fixed disk-33 a, the second fixed disk-33 b, the elastic piece-33C, the connecting piece-34, the device comprises a second displacement sensor-35, a pressure head-36, a first cylinder-361, a second cylinder-362, a third cylinder-363, a pressing sleeve-37, a first sleeve-371, a main body sleeve-3721, an extension sleeve-3722, a first conical surface-M1, a third sleeve-373, a pressing piece-374, a first accommodating cavity-Q1, a second accommodating cavity-Q2, a connecting sleeve-375, a guide sleeve-38, an extension rod-391, a clamping piece-392, a fixed frame-4, a slide rail-5, a first plate-61, a second plate-62, a pin-63, a supporting table-7 and a carrying table-8.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Example 1 press riveting apparatus
As shown in fig. 1 to 8, the clinching apparatus of the present invention is used to press in the pins 63 to connect the first plate 61 and the second plate 62, and the full-size measurement of the pins 63 can be performed during the clinching process using the clinching apparatus of the present invention. The first plate 61 in this embodiment is a screw rod bracket in a slide rail of an automobile seat, and the second plate 62 is a slide rail lower rail in the slide rail of the automobile seat. The press riveting device comprises a press head assembly 3, a driving assembly 1, a fixed frame 4, a first displacement sensor 2 and a control system, wherein the driving assembly 1 is fixedly connected with the fixed frame 4, the press head assembly 3 is in sliding connection with the fixed frame 4, a carrying platform 8 for placing a first plate 61 and a second plate 62 is fixedly arranged at the lower end part of the fixed frame 4, and the first plate 61 and the second plate 62 are positioned below the press head assembly 3; the support table 7 is fixedly arranged on the carrier table 8, the support table 7 is fixedly connected with the carrier table 8, and the support table 7 is used for supporting the pin 63 during riveting. The driving assembly 1 is used for driving the pressing head assembly 3 to move towards or away from the first plate 61 and the second plate 62, so that the pressing head assembly 3 rivets the pin 63 and returns to the original position in time after the riveting is completed.
The structure of each component of the clinching apparatus in this embodiment is described in detail below:
1) Driving assembly
The driving assembly 1 of the present embodiment includes a driving cylinder 11, and a piston (not shown) and a piston rod 12 located in the driving cylinder 11, the bottom of the driving cylinder 11 is fixedly connected with the top of the fixed frame 4, and a first displacement sensor 2 is fixedly disposed on the outer wall of the driving cylinder 11, and the length direction of the first displacement sensor 2 is parallel to the length direction of the piston rod 12. A magnetic ring (not shown) is mounted on the piston, and moves with the piston when the piston moves in the driving cylinder 11, and when the magnetic ring moves near the first displacement sensor 2, the first displacement sensor 2 senses a change in the magnetic field of the magnetic ring, thereby generating an electrical signal.
The bottom end of the piston rod 12 is fixedly provided with a matching rod 13, the matching rod 13 can move downwards or upwards along with the expansion and contraction of the piston rod 12, the matching rod 13 comprises a first rod part 131, a second rod part 132 and a third rod part 133 which are sequentially connected from top to bottom, wherein the outer diameters of the first rod part 131 and the third rod part 133 are larger than the outer diameter of the second rod part 132, and the top of the first rod part 131 is fixedly connected with the bottom end of the piston rod 12; the bottom surface of the third lever portion 133 is provided as a second tapered surface M2, and the diameter of the second tapered surface M2 gradually decreases from one end near the second lever portion 132 to the other end.
2) Pressure head assembly
As shown in fig. 1 and 2, the ram assembly 3 includes a second displacement sensor 35, a ram 36, and a first fixed block 31a, a pressure sensor 32, a first fixed disk 33a, a connecting member 34, and a second fixed disk 33b, which are disposed in this order from top to bottom. The first fixed block 31a includes a first block portion 311 and a fixed table 312, the matching rod 13 is located between the top of the first block portion 311 and the bottom end of the piston rod 12, the bottom of the first fixed block 31a is fixedly connected with the top of the pressure sensor 32, the first fixed disk 33a is fixedly sleeved on the periphery of the lower end of the pressure sensor 32, the bottom of the first fixed disk 33a is fixedly connected with the top of the connecting piece 34, an elastic piece 33c is arranged between the first fixed disk 33a and the second fixed disk 33b, one end of the elastic piece 33c is fixedly connected with the first fixed disk 33a, and the other end of the elastic piece 33c is fixedly connected with the second fixed disk 33b. When the pin 63 is not swaged, there is a gap between the second fixed disk 33b and the upper end portion of the connecting member 34, that is, a gap between the second fixed disk 33b and the first fixed disk 33a, which gradually decreases during the process of swage of the pin 63 by the ram assembly 3.
Further, as shown in fig. 4, 6 and 7, the first block portion 311 of the first fixing block 31a is provided with a first through groove C1 and a second through groove C2 penetrating through the first block portion in the height direction, the first through groove C1 is located above the second through groove C2, and the axis line of the first through groove C1 coincides with the axis line of the second through groove C2. The second rod portion 132 of the matching rod 13 is located in the first through groove C1, the third rod portion 133 and the fixing table 312 are both accommodated in the second through groove C2, the width of the first through groove C1 is smaller than the width of the second through groove C2 and larger than the outer diameter of the second rod portion 132 of the matching rod 13, the height of the first through groove C1 is smaller than the height of the second rod portion 132 of the matching rod 13, the outer diameters of the first rod portion 131 and the third rod portion 133 of the matching rod 13 are both larger than the width of the first through groove C1, and the width of the second through groove C2 is larger than the outer diameter of the third rod portion 133 of the matching rod 13. The top surface of the fixed table 312 is provided with a third conical surface M3, the diameter of the third conical surface M3 gradually decreases from one end close to the matching rod 13 to the other end, and the third conical surface M3 and the second conical surface M2 are matched with each other, so that the matching rod 13 can generate spherical floating on the fixed table 312 instead of hard contact with the fixed table 312, and the lateral force applied to the piston of the driving cylinder 11 due to incomplete concentricity up and down can be avoided, thereby protecting the whole driving assembly 1.
The pressing head 36 penetrates through the thickness direction of the connecting member 34 and the second fixing disk 33b for pressing the rivet pin 63. The pressure head 36 includes from top to bottom connect gradually first cylinder 361, second cylinder 362 and third cylinder 363 that set up, and the external diameter of first cylinder 361 is greater than the external diameter of second cylinder 362, and the external diameter of second cylinder 362 is greater than the external diameter of third cylinder 363, and the top of first cylinder 361 and the bottom butt of pressure sensor 32, connecting piece 34 cover are established in the periphery of second cylinder 362, and the bottom surface of first cylinder 361 is laminated with the top surface of connecting piece 34. The outer periphery of the second post 362 is slidably sleeved with a guide sleeve 38, and the inner wall of the guide sleeve 38 is attached to the outer wall of the second post 362; the guide sleeve 38 can slide up and down relative to the pressure head 36, in this embodiment, the pressure head 36 is made of iron, the guide sleeve 38 is made of copper alloy, and when the guide sleeve 38 slides up and down relative to the pressure head 36, the movement friction force generated between the guide sleeve 38 and the pressure head is small, so that the abrasion-resistant effect is achieved; and the guide sleeve 38 can also ensure the limit of the circumferential direction of the pressure head 36, so as to prevent the pressure head 36 from shaking left and right. The top of the first column 361 abuts against the bottom of the pressure sensor 32, so that when the ram 36 contacts the pin 63 and rivets the pin 63, the pressure sensor 32 can receive the reaction force applied by the pin 63 to the ram 36, thereby facilitating the operator to determine from the pressure displacement curve of the pressure sensor 32 when the ram 36 begins to contact the pin 63.
Further, the pressing head assembly 3 further comprises a pressing sleeve 37, the pressing sleeve 37 is sleeved outside the pressing head 36, and the length of the pressing head 36 is greater than that of the pressing sleeve 37. The pressing sleeve 37 comprises a first sleeve part 371, a second sleeve part, a third sleeve part 373 and a pressing part which are sequentially connected from top to bottom, wherein the outer wall of the first sleeve part 371 is fixedly connected with the inner wall of the second fixed disc 33 b; the second sleeve portion includes a main body sleeve portion 3721 and an extension sleeve portion 3722 fixedly connected with the bottom of the main body sleeve portion 3721, wherein the outer wall of the extension sleeve portion 3722 is provided with a first conical surface M1, and the diameter of the first conical surface M1 gradually decreases from one end close to the main body sleeve portion 3721 to the other end. The lower end of the inside of main part cover 3721 is fixed and is provided with adapter sleeve 375, and the outer wall of adapter sleeve 375 is laminated with the inner wall of main part cover 3721, and the bottom surface of adapter sleeve 375 flushes with the top surface of extension cover 3722. The guide sleeve 38 is fixedly connected with the first sleeve part 371 and part of the main body sleeve part 3721, the outer diameter of the guide sleeve 38 is equal to the inner diameter of the first sleeve part 371, the outer wall of the guide sleeve 38 is attached to the inner wall of the first sleeve part 371 and part of the inner wall of the main body sleeve part 3721, and the bottom of the guide sleeve 38 is positioned on the top of the connecting sleeve 375; in addition, the inner diameter of the first sleeve portion 371 is equal to the inner diameter of the main body sleeve portion 3721, the inner diameter of the main body sleeve portion 3721 is larger than the inner diameter of the connecting sleeve 375, the inner diameter of the connecting sleeve 375 is larger than the inner diameter of the extending sleeve portion 3722, and the inner diameter of the extending sleeve portion 3722 is equal to the inner diameter of the third sleeve portion 373.
In this embodiment, as shown in fig. 4 and fig. 7, the pressing parts 374 are provided with two pressing parts 374, the length directions of the two pressing parts 374 are parallel to the length direction of the pressing head 36, the two pressing parts 374 are enclosed to form a first accommodating cavity Q1 and a second accommodating cavity Q2, the axial line of the first accommodating cavity Q1 coincides with the axial line of the second accommodating cavity Q2, the first accommodating cavity Q1 is located above the second accommodating cavity Q2, the diameter of the first accommodating cavity Q1 is smaller than the diameter of the second accommodating cavity Q2 and smaller than the outer diameter of the upper end of the pin 63, the diameter of the second accommodating cavity Q2 is larger than the outer diameter of the upper end of the pin 63, and the arrangement can ensure that the pressing sleeve 37 can directly pass through the pin 63 to be contacted with the first plate 61 in the process of moving down to be close to the pin 63 without contacting with the pin 63, the pressing sleeve 37 is prevented from contacting with the pin 63, the axial line of the second accommodating cavity Q1 is located above the second accommodating cavity Q2, the diameter of the first accommodating cavity Q1 is smaller than the outer diameter of the upper end of the pin 63, and the diameter of the second accommodating cavity Q2 is smaller than the outer diameter of the upper end of the pin 63, and the outer diameter of the pin 63 is equal to the upper end of the pin 63.
In this embodiment, when the pin 63 is not yet swaged and neither the pressing sleeve 37 nor the ram 36 is in contact with the pin 63, as shown in fig. 1 to 4, the bottom of the pressing sleeve 37 is located below the bottom of the ram 36, that is, there is a distance between the bottom of the pressing sleeve 37 and the bottom of the ram 36, and the bottom of the pressing sleeve 37 is closer to the pin 63 below than the bottom of the ram 36. When the whole pressing head assembly 3 gradually approaches the pin 63 downwards under the driving action of the driving assembly 1, the pressing part of the pressing sleeve 37 firstly contacts the first plate 61, at this time, the pressing head 36 is not contacted with the pin 63, when the driving assembly 1 continues to drive the pressing head assembly 3 to move downwards and before the pressing head 36 does not contact the pin 63, the pressing part of the pressing sleeve 37 is abutted with the first plate 61, when the pressing head assembly continues to press downwards, the first plate 61 exerts a reaction force on the pressing part, and because the elastic piece 33c is arranged between the first fixed disc 33a and the second fixed disc 33b, the reaction force exerted by the first plate 61 pushes the pressing sleeve 37 to move upwards, so that the second fixed disc 33b is driven to move upwards (in the direction close to the first fixed disc 33 a) and compress the elastic piece 33c, and the gap between the second fixed disc 33b and the upper end part of the connecting piece 34 is gradually reduced, namely the gap between the first fixed disc 33a and the second fixed disc 33b is gradually reduced, so that the pressing head 36 can contact the pin 63, and the driving assembly 36 is driven to rivet the pin 63 under the driving action of the driving assembly 1 as shown in fig. 5 and 6.
Further, an extension rod 391 is fixedly arranged on the second fixed disk 33b, one end of the extension rod 391 extends outwards to the outside of the second fixed disk 33b, a clamping piece 392 is fixedly arranged on the pressure sensor 32, one end of the clamping piece 392 extends outwards to the outside of the pressure sensor 32, and the second displacement sensor 35 is fixedly connected with the clamping piece 392. The sensing end (bottom end) of the second displacement sensor 35 is an elastic end, and the bottom surface of the sensing end contacts the top surface of the extension rod 391: when the pin 63 is not riveted yet and the pressing sleeve 37 is far away from the pin 63, the sensing end of the second displacement sensor 35 is attached to the top surface of the extension rod 391, and when the pressing sleeve 37 or the pressing head 36 is in contact with the pin 63, the sensing end of the second displacement sensor 35 is abutted to the top surface of the extension rod 391, and the second displacement sensor 35 can display displacement change by the reaction force applied to the second displacement sensor 35 by the extension rod 391.
In the present invention, the first displacement sensor 2 is used for measuring a first dimension of the pin 63, the second displacement sensor 35 is used for measuring a second dimension and a third dimension of the pin 63, specifically, the first dimension is a height before the pin 63 is swaged, the second dimension is a height of an upper end portion of the pin 63 located outside the first plate 61 and the second plate 62 before the pin 63 is swaged, and the third dimension is a height of an upper end portion of the pin 63 located outside the first plate 61 and the second plate 62 after the pin 63 is swaged (after the swaging, a portion of the upper end portion of the pin 63 located outside the first plate 61 and the second plate 62 becomes shorter and thicker). During the clinching process, when the pressure sensor 32 monitors the pressure feedback and the ram 36 just begins clinching the pin 63, the first displacement sensor 2 has a value of the first size of the pin 63 and the second displacement sensor 35 has a value of the second size of the pin 63; the value of the second displacement sensor 35 when the ram 36 completes the staking of the pin 63 is the third dimension of the pin 63. In the working process, the operator generally knows the target value of the third dimension after the pin 63 is riveted in advance, and can calculate the theoretical value of the distance that the ram 36 needs to move downwards just after contacting the pin 63 according to the first measured value of the second displacement sensor 35 and the target value of the third dimension, and the riveting is completed after the driving assembly 1 is controlled to drive the ram assembly 3 to move downwards by the theoretical value of the distance, at this time, the second measured value fed back by the second displacement sensor 35 is the actually measured third dimension after the pin 63 is riveted.
Further, as shown in fig. 1,2 and 5, the ram assembly 3 further includes a second fixing block 31b fixedly connected to the first fixing block 31a, the first fixing block 31a is perpendicular to the second fixing block 31b, and a slider 31c is fixedly disposed on the second fixing block 31 b. And a sliding rail 5 is fixedly arranged on one side of the fixed frame 4 close to the pressure head assembly 3, and a sliding block 31c can be in sliding connection with the sliding rail 5. The sliding rail 5 and the sliding block 31c can play a role in guiding the movement of the whole pressure head assembly 3 under the driving action of the driving assembly 1, so that the pressure head assembly 3 is prevented from swinging or swaying after moving, and the riveting precision is ensured.
Example 2 method of staking pins
The present embodiment provides a method for clinching a pin 63 using the clinching apparatus of embodiment 1, including the steps of:
step 1: the first calibration block is placed on a supporting table 7 of the riveting device, the pressure head assembly 3 is driven to move downwards under the driving action of the driving assembly 1, so that the size of the first calibration block is measured, and the initial value of the first displacement sensor 2 is calibrated by the first calibration block. The first calibration block is measured by metering and is the same as the theoretical height of the pin 63, and is used for calibrating the theoretical height of the pin 63 (i.e. the theoretical height of the first dimension) and the initial value of the first displacement sensor 2.
Step 2: the first calibration block is taken down from the supporting table 7, the second calibration block is placed on the supporting table 7, the pressure head assembly 3 is driven to move downwards under the driving action of the driving assembly 1, the size of the second calibration block is measured, and the initial value of the second displacement sensor 35 is calibrated by the second calibration block. The second calibration block is also measured by measurement and has the same theoretical height as the portion of the upper end portion of the pin 63 outside the first plate 61 and the second plate 62 before the pin 63 is swaged, and is used for calibrating the theoretical height of the second dimension of the pin 63 and the initial value of the second displacement sensor 35 before the pin is swaged.
Step 3: the first size error range and the second size error range of the pin 63 are determined, the second calibration block is taken down from the supporting table 7, the first plate 61, the second plate 62 and the pin 63 are placed on the carrying table 8 and the supporting table 7, the driving assembly 1 drives the pressing head assembly 3 to move downwards, the first size and the second size before the pin 63 is pressed and riveted are measured, and the first measurement value fed back by the first displacement sensor 2 and the first measurement value fed back by the second displacement sensor 35 are recorded.
When the ram assembly 3 just begins to move downwards under the driving action of the driving assembly 1, the pressing piece 374 is not contacted with the first plate 61, the third column 363 of the ram 36 is not contacted with the pin 63 until the ram assembly 3 moves downwards until the bottom of the pressing piece 374 is firstly contacted with the first plate 61 and the third column 363 is not contacted with the pin 63, at this moment, the driving assembly 1 still continuously drives the ram assembly 3 to move downwards, so that the pressing piece 374 is abutted with the first plate 61, the pressing piece 374 is upwards moved by the reaction force exerted by the first plate 61, so as to drive the whole pressing sleeve 37 to move upwards, and further drive the second fixed disc 33b to move towards the direction approaching the first fixed disc 33a to compress the elastic piece 33c, and the movement of the second fixed disc 33b drives the extension rod 391 to move, so that the top surface of the extension rod 391 is abutted with the sensing end of the second displacement sensor 35, and the second displacement sensor 35 outputs a signal; the drive assembly 1 in the process also continues to drive the ram assembly 3 downwardly until the third column 363 of the ram 36 has just begun to contact the pin 63 and exert pressure on the pin 63, and the pressure sensor 32 is able to receive the reactive force exerted by the pin 63 against the ram 36, so that the pressure sensor 32 generates a signal that facilitates the operator to determine from the pressure displacement curve of the pressure sensor 32 when the ram 36 is beginning to contact the pin 63 and begin to squeeze the pin 63 to read the first measurement value of the first displacement sensor 2 and the first measurement value of the second displacement sensor 35 at that time as the first and second dimensions of the pin 63, respectively.
Step 4: comparing the first measured value fed back by the first displacement sensor 2 with the initial value of the first displacement sensor 2, comparing the first measured value fed back by the second displacement sensor 35 with the initial value of the second displacement sensor 35, and if the difference between the first measured value fed back by the first displacement sensor 2 and the initial value of the first displacement sensor 2 is within the first dimension error range of the pin 63, and if the difference between the first measured value fed back by the second displacement sensor 35 and the initial value of the second displacement sensor 35 is within the second dimension error range of the pin 63, proceeding to the next step. The first dimension of the pin 63 is the first measurement value fed back by the first displacement sensor 2, and the second dimension of the pin 63 is the first measurement value fed back by the second displacement sensor 35; otherwise, the control system will give an alarm to remind the staff that the pin 63 fed is not qualified and cannot be clinched.
Step 5: the control system controls the driving assembly 1 to continuously drive the ram assembly 3 to move downwards so that the ram 36 contacts the pin 63 and rivets the pin 63, wherein the distance that the ram assembly 3 moves downwards is the difference between the first measured value of the second displacement sensor 35 (namely, the actual second dimension of the pin 63) and the target value of the third dimension; the pin 63 is swaged, and after the completion of the swaging, a third dimension of the pin 63 is measured, and the full-size measurement of the pin 63 is completed, wherein the third dimension of the pin 63 is the second measurement value fed back by the second displacement sensor 35.
Step 6: determining a third dimension error range of the pin 63, comparing the actual third dimension with a target value of the third dimension of the pin 63 according to the actual third dimension of the pin 63 obtained in the step 5, and finishing press riveting when the difference value between the actual third dimension and the target third dimension is within the third dimension error range of the pin 63; otherwise, the first plate 61 and the second plate 62 which are riveted with the pin 63 are integrally disqualified pieces, and the control system gives an alarm to remind an operator of placing the disqualified pieces in a disqualified material box, and the disqualified pieces are scrapped.
The steps 1 to 5 are full-size pin measuring methods in the press riveting process, and the first size, the second size and the third size of the pins can be obtained through the measuring methods, so that related operators can determine whether the heights of the pins for feeding are qualified or not, and the feeding state is ensured; and whether the total thickness of the first plate and the second plate which are connected is qualified and whether the exposed heights of the pins are qualified before and after press riveting can be determined, so that the good connection strength between the first plate and the second plate is ensured. According to the invention, in the process of riveting the pin, the first plate and the second plate by using the riveting device, full-size measurement of pin riveting can be realized, and meanwhile, all relevant data can be guaranteed to have traceability.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (14)
1. A full-size pin measuring method in a press riveting process is characterized in that: comprises the following steps of the method,
Step 1: measuring the size of a first calibration block, and calibrating an initial value of a first displacement sensor of the press riveting device by the first calibration block;
step 2: measuring the size of a second calibration block, and calibrating an initial value of a second displacement sensor of the press riveting device by the second calibration block;
Step 3: determining a first size error range and a second size error range of a pin, measuring the first size and the second size of the pin before riveting, and recording a first measurement value fed back by the first displacement sensor and a first measurement value fed back by the second displacement sensor;
Step 4: comparing the first measured value fed back by the first displacement sensor with the initial value of the first displacement sensor, comparing the first measured value fed back by the second displacement sensor with the initial value of the second displacement sensor, and if the difference between the first measured value fed back by the first displacement sensor and the initial value of the first displacement sensor is within a first size error range of the pin, and if the difference between the first measured value fed back by the second displacement sensor and the initial value of the second displacement sensor is within a second size error range of the pin, performing the next step; otherwise, stopping measuring the pin;
step 5: and (3) riveting the pin, measuring a third dimension of the pin after the riveting is completed, and completing full-dimension measurement of the pin.
2. The method for measuring the full size of the pin in the press riveting process according to claim 1, wherein the method comprises the following steps: the first dimension of the pin is a first measurement value fed back by the first displacement sensor, the second dimension of the pin is a first measurement value fed back by the second displacement sensor, and the third dimension of the pin is a second measurement value fed back by the second displacement sensor.
3. The method for measuring the full size of the pin in the press riveting process according to claim 1, wherein the method comprises the following steps: in the step 4, when the difference between the first measured value fed back by the first displacement sensor and the initial value of the first displacement sensor is located outside the first size error range of the pin, and/or the difference between the first measured value fed back by the second displacement sensor and the initial value of the second displacement sensor is located outside the second size error range of the pin, the pin is determined to be unqualified, and the pin is stopped from continuing to be measured.
4. A method for measuring the full size of a pin in a press riveting process according to any one of claims 1 to 3, wherein: the first dimension of the pin is larger than the second dimension, and the second dimension of the pin is larger than the third dimension; the pin is used for connecting the first plate with the second plate, and the first plate is attached to the second plate; the first size of the pin is the height before the pin is pressed and riveted, the second size of the pin is the height of the upper end part of the pin, which is positioned outside the first plate and the second plate, before the pin is pressed and riveted, and the third size of the pin is the height of the upper end part of the pin, which is positioned outside the first plate and the second plate after the pin is pressed and riveted.
5. A pin press riveting method is characterized in that: the step of the pin press riveting method comprises the steps 1 to 5 in the pin full-size measurement method in the pin press riveting process according to any one of claims 1 to 4, after the third size of the pin is obtained, the third size is compared with the target third size of the pin, and when the difference value between the third size and the target third size is within the third size error range of the pin, press riveting is completed.
6. The utility model provides a press riveting device for squeeze into the pin and make first panel be connected with the second panel, its characterized in that: the full-size pin measuring method in the riveting process according to any one of claims 1-4, wherein the riveting device is used for measuring the pin, the riveting device comprises a pressing head assembly, a driving assembly and a first displacement sensor, the driving assembly is used for driving the pressing head assembly to move towards a direction close to or away from the first plate and the second plate, the pressing head assembly comprises a second displacement sensor and a pressing head, the pressing head is used for riveting the pin, the first displacement sensor is used for measuring a first size of the pin, and the second displacement sensor is used for measuring a second size and a third size of the pin.
7. The clinching apparatus of claim 6, wherein: the pressure head assembly further comprises a first fixed block, a pressure sensor, a first fixed disc, a connecting piece and a second fixed disc which are sequentially arranged from top to bottom, the bottom of the first fixed block is fixedly connected with the top of the pressure sensor, the first fixed disc is fixedly sleeved on the periphery of the lower end part of the pressure sensor, the bottom of the first fixed disc is fixedly connected with the top of the connecting piece, the connecting piece is fixedly sleeved on the periphery of the pressure head, an elastic piece is arranged between the first fixed disc and the second fixed disc, one end of the elastic piece is fixedly connected with the first fixed disc, and the other end of the elastic piece is fixedly connected with the second fixed disc; when the pin is not riveted, a gap is reserved between the second fixed disc and the upper end part of the connecting piece.
8. The clinching apparatus of claim 7, wherein: the pressing head assembly further comprises a pressing sleeve, the pressing sleeve is fixedly connected with the second fixed disc, a guide sleeve is arranged between the inner wall of the pressing sleeve and the outer wall of the pressing head, the guide sleeve is slidably sleeved on the periphery of the pressing head, and the inner wall of the guide sleeve is attached to the outer wall of the pressing head; the guide sleeve is fixedly connected with the compression sleeve.
9. The clinching apparatus of claim 8, wherein: the compression sleeve comprises a first sleeve part, a second sleeve part, a third sleeve part and a compression part which are sequentially connected from top to bottom, wherein the outer wall of the first sleeve part is fixedly connected with the inner wall of the second fixed disc, the second sleeve part comprises a main body sleeve part and an extension sleeve part fixedly connected with the bottom of the main body sleeve part, the outer wall of the extension sleeve part is provided with a first conical surface, the diameter of the first conical surface gradually decreases from one end close to the main body sleeve part to the other end, the lower end of the inside of the main body sleeve part is fixedly provided with a connecting sleeve, the outer wall of the connecting sleeve is attached to the inner wall of the main body sleeve part, the bottom surface of the connecting sleeve is flush with the top surface of the extension sleeve part, the outer diameter of the guide sleeve is equal to the inner diameter of the first sleeve part, and the bottom of the guide sleeve is positioned on the top of the connecting sleeve; the inner diameter of the first sleeve part is equal to the inner diameter of the main body sleeve part, the inner diameter of the main body sleeve part is larger than the inner diameter of the connecting sleeve, the inner diameter of the connecting sleeve is larger than the inner diameter of the extending sleeve part, and the inner diameter of the extending sleeve part is equal to the inner diameter of the third sleeve part.
10. The clinching apparatus of claim 9, wherein: the pressure head runs through the thickness direction of connecting piece and second fixed disk, the pressure head includes from last first cylinder, second cylinder and the third cylinder that connect gradually down and set up, the external diameter of first cylinder is greater than the external diameter of second cylinder, the external diameter of second cylinder is greater than the external diameter of third cylinder, the top of first cylinder with pressure sensor's bottom looks butt, the connecting piece cover is established the periphery of second cylinder, the bottom surface of first cylinder with the top surface of connecting piece is laminated mutually, the guide pin bushing cover is established the periphery of second cylinder, the third cylinder is kept away from the tip of second cylinder is located the inside of third cover portion and clamp part.
11. The clinching apparatus of claim 10, wherein: the compressing part at least comprises two compressing pieces which are uniformly arranged at intervals, a first accommodating cavity and a second accommodating cavity are formed by encircling between the compressing pieces, the first accommodating cavity is located above the second accommodating cavity, the axial lead of the first accommodating cavity is coincident with that of the second accommodating cavity, the diameter of the first accommodating cavity is smaller than that of the second accommodating cavity and smaller than that of the upper end part of the pin, and the diameter of the second accommodating cavity is larger than that of the upper end part of the pin.
12. The clinching apparatus of claim 8, wherein: the first displacement sensor is fixedly connected with the driving assembly, and the second displacement sensor is fixedly connected with the pressure sensor; the second fixed disc is fixedly provided with an extension rod, when the pressing sleeve is far away from the pin, the sensing end of the second displacement sensor is attached to the top surface of the extension rod, and when the pressing sleeve or the pressing head is in contact with the pin, the sensing end of the second displacement sensor is abutted to the top surface of the extension rod.
13. The clinching apparatus of claim 10, wherein: the driving assembly comprises a driving cylinder and a piston rod, a matching rod is arranged between the piston rod and the first fixed block, the matching rod comprises a first rod part, a second rod part and a third rod part which are sequentially connected from top to bottom, the outer diameters of the first rod part and the third rod part are both larger than the outer diameter of the second rod part, the top of the first rod part is fixedly connected with the piston rod, the bottom surface of the third rod part is provided with a second conical surface, and the diameter of the second conical surface gradually decreases from one end close to the second rod part to the other end; the first fixing block comprises a first block part and a fixing table, a third conical surface is arranged on the top surface of the fixing table, and the third conical surface is matched with the second conical surface;
The first block portion is provided with a first through groove and a second through groove penetrating through the first block portion in the height direction, the fixing table is accommodated in the second through groove, the first through groove is located above the second through groove, the axial lead of the first through groove is coincident with that of the second through groove, the width of the first through groove is smaller than that of the second through groove and larger than the outer diameter of the second rod portion, the height of the first through groove is smaller than that of the second rod portion, the outer diameters of the first rod portion and the third rod portion are both larger than that of the first through groove, and the width of the second through groove is larger than that of the third rod portion.
14. The clinching apparatus of claim 7, wherein: the pressing head assembly comprises a first fixing block and a second fixing block, wherein the first fixing block is fixedly connected with the pressing head assembly, the second fixing block is fixedly provided with a sliding block, and the sliding block is in sliding connection with the sliding rail.
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| CN202410644294.5A CN118224945A (en) | 2024-05-23 | 2024-05-23 | Pin full-size measuring method in press riveting process, pin press riveting method and press riveting device |
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| JP2016161502A (en) * | 2015-03-04 | 2016-09-05 | 株式会社ミツトヨ | Height gauge |
| CN205426109U (en) * | 2015-12-31 | 2016-08-03 | 东莞鸿图精密压铸有限公司 | It is complete in movable auxiliary scale cun check out test set |
| CN205642333U (en) * | 2016-04-14 | 2016-10-12 | 佛吉亚(无锡)座椅部件有限公司 | Squeeze riveter rivet height measurement system |
| CN106931891A (en) * | 2017-04-22 | 2017-07-07 | 广东鸿图南通压铸有限公司 | A kind of device of oil sump pin press-in elevation carrection stabilization |
| CN210321538U (en) * | 2019-09-23 | 2020-04-14 | 上海新松机器人有限公司 | Height detection mechanism |
| CN216324902U (en) * | 2021-11-29 | 2022-04-19 | 无锡共成金属有限公司 | Rivet press-fitting device |
| JP2024031254A (en) * | 2022-08-26 | 2024-03-07 | 日東精工株式会社 | Seating confirmation device |
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