CN118408448A - Three-coordinate gauge clamping device, gauge and free rebound detection method - Google Patents
Three-coordinate gauge clamping device, gauge and free rebound detection method Download PDFInfo
- Publication number
- CN118408448A CN118408448A CN202410874038.5A CN202410874038A CN118408448A CN 118408448 A CN118408448 A CN 118408448A CN 202410874038 A CN202410874038 A CN 202410874038A CN 118408448 A CN118408448 A CN 118408448A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- piezoresistor
- block
- abutting
- abutting block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 43
- 238000003825 pressing Methods 0.000 claims abstract description 19
- 230000000149 penetrating effect Effects 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 2
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to a three-coordinate gauge clamping device, a gauge and a free rebound detection method, belonging to the technical field of three-coordinate detection and comprising the following steps: the pressing clamp assembly, the pressing clamp, the first air cylinder and the first pressure sensor, wherein the first air cylinder is connected to the locking end, the first air cylinder is provided with a first movable end which stretches along the normal direction of the external contact surface of the part, one end of the first movable end, which faces the part, is connected with a first abutting block, and the first abutting block is used for abutting against the external contact surface of the part; the first pressure sensor is connected to the first abutting block and is provided with a first contact penetrating through the first abutting block, a first piezoresistor connected to one end of the first abutting block, which is far away from the part, and a first spring abutting between the first contact and the first piezoresistor, wherein the first spring is in a compression state; the detection tool can solve the technical problem that detection accuracy is reduced due to the fact that the detection tool cannot provide stable support when the free rebound quantity is detected by the parts with large rebound quantity in the prior art.
Description
Technical Field
The invention belongs to the technical field of three-coordinate detection, and particularly relates to a three-coordinate detection tool clamping device, a detection tool and a free rebound detection method.
Background
The automobile stamping sheet metal part has the advantages that the rebound quantity can appear after stamping forming due to the characteristics of materials, the rebound trend can be compensated after pre-analysis by finite element analysis software, but the simulation analysis is still difficult to completely match with the actual production process, and a large gap can appear in the directly produced stamping sheet metal part during welding.
The patent with publication number CN107900255A discloses a cold stamping springback analysis and full face compensation method for an automobile fender, in which the free springback result, that is, the workpiece is not affected by gravity of the workpiece and is free from any constraint of the clamping points, the free springback result is not accurately obtained due to deformation of the workpiece caused by positioning of the clamping points, the free springback result of the workpiece is measured, and the compensation amount after finite element analysis is adjusted to compensate the stamping model face, so how to accurately detect the free springback amount of the workpiece is a problem which needs to be solved by those skilled in the art.
The prior patent with the publication number of CN220931932U discloses a left threshold assembly gauge, wherein the lower side of the left threshold is provided with a row of lower mounting holes, the upper side of the left threshold is provided with a rear positioning profile and a front concave positioning profile, and the gauge comprises a workbench; the pressing clamp mechanisms are transversely arranged on the workbench and press against the lower mounting holes; the rear positioning base block clamps the rear side of the left threshold; the rear positioning tire mold is arranged on the workbench and props against the rear positioning molded surface; the front concave positioning tire mold is pressed to the front concave positioning molded surface through the turnover mechanism, and a gap is reserved between the front concave positioning tire mold and the front concave positioning molded surface; the side positioning base blocks are pressed at the two ends of the left threshold through the turnover mechanism and are provided with spring detection pins in a penetrating mode.
The prior art has the following problems:
the existing stamping part detection tool generally adopts a pressing clamp mechanism to clamp and position the part on the detection tool, and when the free rebound quantity of the part needs to be detected, the pressing clamp can only be loosened, so that the part can be free rebound deformation after the pressing clamp is loosened, the fixed zero position surface on the detection tool can not provide stable support for the part any more, and then the part is touched when the three-coordinate measuring head touches the part acquisition point position, so that the detection precision of the free rebound quantity is reduced.
Disclosure of Invention
The invention provides a three-coordinate gauge clamping device, a gauge and a free rebound detection method, which can solve the technical problem that in the prior art, when a part with large rebound quantity detects free rebound quantity, the gauge cannot provide stable support, so that detection precision is reduced.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
The application provides a three-coordinate gauge clamping device, which comprises a press clamp assembly, wherein the press clamp assembly comprises: the clamp comprises a clamp body, a first cylinder and a first pressure sensor, wherein the clamp body is provided with a handle and a locking end which are in transmission connection with each other, the handle drives the locking end to be close to or far away from a part, and the locking end is in a self-locking state when being closest to the part; the first cylinder is connected to the locking end and is provided with a first movable end which stretches and contracts along the normal direction of the external contact surface of the part, one end of the first movable end, facing the part, is connected with a first abutting block, and the first abutting block is used for abutting against the external contact surface of the part; the first pressure sensor is connected to the first abutting block, the first pressure sensor is provided with a first contact penetrating through the first abutting block, a first piezoresistor connected to one end of the first abutting block, deviating from the part, and a first spring abutted between the first contact and the first piezoresistor, and the first spring is in a compressed state.
Through above-mentioned technical scheme, adopt the pressure clamp subassembly that has pressure sensor and cylinder can contact but not exert the pressure clamp force to realize zero pressure spacing to the spare, only play spacing effect and not change the resilience state of part, avoid three-dimensional detection head to touch the part, improved the detection precision of free resilience volume.
In the present invention, the three-coordinate gauge clamping device further includes a support assembly, where the support assembly includes: the second cylinder is connected to the male die and is provided with a second movable end, the second movable end stretches and contracts along the normal direction of the inner contact surface of the part, one end, facing the part, of the second movable end is connected with a second abutting block, and the second abutting block is used for abutting against the inner contact surface of the part; the second pressure sensor is connected to the second abutting block, the second pressure sensor is provided with a second contact penetrating through the second abutting block, a second piezoresistor connected to one end of the second abutting block, which is far away from the part, and a second spring abutting between the second contact and the second piezoresistor, and the second spring is in a compression state.
Through above-mentioned technical scheme, adopt the supporting component that has pressure sensor and cylinder can be according to the self-adaptation of the free resilience volume of part and adjust the supporting position, can not exert extra pressure to the part simultaneously and lead to its deformation, improved the supporting stability to the part in the free resilience volume detects.
In the present invention, the three-coordinate gauge clamping device further includes:
the first groove is formed in the side wall of the first movable end; the first grating ruler is connected with the first groove; the first reading head is connected to the first air cylinder and is used for reading the first grating scale;
The second groove is formed in the side wall of the second movable end; the second grating ruler is connected with the second groove; the second reading head is connected to the male die and used for reading the second grating scale.
Through the technical scheme, the displacement of the pressing clamp assembly and the support assembly is calibrated based on the grating ruler, so that the displacement precision is improved, the influence on the free rebound quantity of the parts is reduced, and the detection precision is improved.
In the invention, the second contact is provided with a sliding section, a threaded section and a limiting section, wherein the sliding section is connected with the second abutting block in a penetrating way, the threaded section can be connected with the second abutting block in a threaded way, and the limiting section is connected with an inner hole of the second abutting block in a sliding way;
When the threaded section is in threaded connection with the second abutting block, the sliding section and the limiting section are immovable;
when the thread section is separated from the second abutting block, the sliding section and the limiting section are connected with the second abutting block in a sliding mode.
Through the technical scheme, the state of the supporting component used for self-adaptive supporting and the state of the supporting component used for conventional hard supporting can be switched by utilizing the thread section of the second contact, so that the adaptability of the device is enhanced.
The application also provides a three-coordinate gauge which comprises a plurality of three-coordinate gauge clamping devices, wherein the three-coordinate gauge clamping devices are abutted to the positions where free rebound exists in the pre-analysis of the parts; the base plate is used for connecting the male die and the pressing clamp; the reference block is connected to the male die and used for positioning the Z direction of the part, and the reference block is inserted with positioning pins used for limiting the X direction and the Y direction of the part.
Through the technical scheme, the zero position surface of the part is supported by the reference block, the part is prevented from sliding by adopting the positioning pin for positioning, and then the plurality of detecting tool clamping devices are arranged at positions where rebound occurs in part analysis, so that the positioning accuracy of the detecting tool in the process of detecting the free rebound quantity of the part is improved, and the precision of detecting the free rebound quantity is further improved.
The application also provides a free rebound detection method, which comprises the following steps:
the three-coordinate gauge comprises the following steps:
step S1: clamping the part by adopting the reference block and the positioning pin;
step S2: pushing the pressing pliers to approach the part to a self-locking state;
Step S3: driving a plurality of first cylinders to enable the first movable end to move towards the part until the resistance of the first piezoresistor changes, and then adjusting the first cylinders to retract to the critical position of the resistance change of the first piezoresistor through the first grating ruler size recorded by the first reader;
Step S4: and acquiring coordinates of a preset free rebound acquisition point by a three-coordinate detector.
Through above-mentioned technical scheme, after adopting the reference block to fix a position the zero position face of part, it is spacing to apply zero pressure to the part through a plurality of clamp subassemblies to the positioning accuracy of part when having improved the free resilience volume detection of punching press part, and then improved the precision that the free resilience volume detected.
In the present invention, between the step S3 and the step S4, further includes:
Step S3-1: and driving a plurality of second cylinders to enable the second movable ends to move towards the part until the resistance of the second piezoresistor changes, and then adjusting the second cylinders to retract to the critical position of the resistance change of the second piezoresistor through the second grating ruler size recorded by the second read head.
Through above-mentioned technical scheme, adopt supporting component cooperation press-clamping assembly to exert zero pressure spacing to the part in step, further improved the anti deformability of part, improved the precision that the free resilience detected.
In the present invention, between the step S3-1 and the step S4, the method further comprises:
Step S3-2: simultaneously driving the first cylinder and the second cylinder to extend, respectively adjusting the extending speeds of the first cylinder and the second cylinder by adopting electromagnetic valves, and stopping extending the first cylinder and the second cylinder when the resistance values of the first piezoresistor and the second piezoresistor stop changing simultaneously by adjusting the extending speeds of the first cylinder and the second cylinder so that the curvatures of the resistance value change curves of the first piezoresistor and the second piezoresistor are approximately the same.
Through the technical scheme, the same pressure is further synchronously applied on the basis of zero-pressure limiting of the clamping assembly and the supporting assembly until the clamping assembly and the supporting assembly clamp the part, so that the clamping force which does not deform is obtained on the premise that the part is kept in a free rebound state, the three-coordinate detection head is stronger in resistance to deformation or displacement caused by contact of the three-coordinate detection head, and the precision of free rebound quantity detection is further improved.
In the present invention, the step S3-2 further includes assigning the plurality of three-coordinate gauge clamping devices into a first group close to the reference block and a second group far from the reference block, performing the operation of the step S3-2 on the first group, and performing the operation of the step S3-2 on the second group.
Through the technical scheme, the part profile contacted by the first group of clamping devices close to the reference block has smaller free rebound quantity, after the part profile is pressurized and positioned, the second group of clamping devices far away from the reference block are operated, because the length of the movable section of the part is reduced, the free activity quantity is also reduced at the part far away from the reference block, the interference of synchronous pressurization and positioning on free rebound quantity detection is further reduced by adopting a progressive balance pressure clamping mode, and the error in the detection process is furthest suppressed on the premise of not losing rebound information, and the detection precision is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an isometric view of a three-coordinate gauge according to an embodiment of the present invention;
FIG. 2 is an isometric view of a press nip assembly according to embodiments of the present invention;
FIG. 3 is an exploded view of the press nip assembly of the present invention with the press nip removed;
FIG. 4 is an isometric view of a support assembly according to an embodiment of the present invention;
FIG. 5 is an exploded view of a support assembly according to an embodiment of the present invention;
fig. 6 is an isometric view of a second contact provided in an embodiment of the present invention;
fig. 7 is a cross-sectional view of a second contact lock state provided by an embodiment of the present invention;
Fig. 8 is a cross-sectional view of a second contact in an active state provided by an embodiment of the present invention;
FIG. 9 is a cross-sectional view of a three-coordinate gauge according to an embodiment of the present invention;
FIG. 10 is an enlarged view of a portion of FIG. 9 at A;
Fig. 11 is another cross-sectional view of a three-coordinate gauge according to an embodiment of the present invention.
Icon: 1-a press-clamping assembly; 101-a first abutment block; 102-a first cylinder; 1021-cylinder mount; 1022-first groove; 1023-rack; 103-a first pressure sensor; 1031-a first contact; 1032—a first spring; 1033-a first varistor; 1040-a first grating scale; 1041-a first read head; 105-pressing pliers; 2-a support assembly; 201-a second abutment block; 202-a second cylinder; 2021-flange plate; 2022-second groove; 203-a second pressure sensor; 2031-a second contact; 2031 a-a sliding section; 2031 b-thread segments; 2031 c-a limit section; 2032-a second spring; 2033-a second varistor; 2041-a second grating scale; 2042-a second readhead; 3-male die; 4-a substrate; 5-a reference block; 6-parts; 1 a-a first press-clamping assembly; 1 b-a second press nip assembly; 1 c-a third press-clamping assembly; 1 d-a fourth press-clamping assembly; 2 a-a first support assembly; 2 b-a second support assembly; 2 c-a third support assembly; 2 d-fourth support assembly.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, welded, bolted, or riveted; the connecting device can be fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Examples:
referring to fig. 1-11, fig. 1-11 illustrate an embodiment of the present application.
The embodiment provides a three-dimensional checking fixture clamping device, as shown in fig. 2 and 3, including a press-clamping assembly 1, the press-clamping assembly 1 includes: the pressing clamp 105, the first air cylinder 102 and the first pressure sensor 103 are arranged, the pressing clamp 105 is provided with a handle and a locking end which are in transmission connection with each other, the handle drives the locking end to be close to or far away from the part 6, and the locking end is in a self-locking state when being closest to the part 6; the first cylinder 102 is connected to the locking end through a cylinder mounting seat 1021, the first cylinder 102 has a first movable end which stretches and contracts along the external contact surface normal direction of the part 6, and as shown in fig. 3 and 5 and fig. 7 (the first abutting block 101 and the second abutting block 201 have the same structure), the first movable end is connected with the first abutting block 101 toward one end of the part 6 by screw thread; the first pressure sensor 103 is connected to the first abutment block 101, and as shown in fig. 3, the first pressure sensor 103 has a first contact 1031 penetrating through the first abutment block 101, a first varistor 1033 connected to an end of the first abutment block 101 facing away from the component 6 by a screw mount, and a first spring 1032 abutting between the first contact 1031 and the first varistor 1033, and the first spring 1032 is in a compressed state.
When the device is used, as shown in fig. 9, the part 6 is specifically a floor beam, at least two groups of press-clamping assemblies 1 are symmetrically arranged on rebound areas on two sides of the part 6, and the space positions of the part 6 are positioned at three points through the arrangement mode that the first contacts 1031, the reference blocks 5 and the first contacts 1031 are staggered at intervals up and down.
As shown in fig. 10, the first contact 1031 abuts the component 6 and the first contact block 101 does not abut the component 6 when the first contact block 101 is pressed against the outer contact surface of the component 6 and the zero-pressure is limited.
There are indeed some techniques in the prior art similar to this embodiment, mainly focusing on the field of clamping and measuring the workpiece with cylinders or sensors, but most of the prior art still have some limitations, such as:
1. the traditional clamp pressing mechanism can fix a workpiece, but is easy to interfere with the rebound state, and the measurement accuracy is affected.
2. Some prior art proposes to utilize vision or scanning mode to carry out non-contact measurement, for example blue light scanning or white light scanning, need paste the setpoint after spraying developer to the spare part, then obtain the position of setpoint through the mode of shooing, but the cost is higher, and the operation degree of difficulty is great, and is difficult to apply on a large scale with the environmental requirement harsh.
3. Still other solutions employ elastic supports or suspensions that minimize workpiece constraints, but lack precise force control capabilities.
Through above-mentioned technical scheme, adopt the clamp subassembly 1 that presses that has pressure sensor and cylinder can contact but not exert the pressure clamp force to spare part 6, produce the spacing effect of zero pressure, also can produce spacing effect to spare part 6 when satisfying the free rebound measurement, avoid three-dimensional detection head to touch spare part 6, improved the detection precision of free rebound volume.
As a preferred embodiment, as shown in fig. 4 and 5, the three-coordinate gauge clamping device further includes a support assembly 2, where the support assembly 2 includes: the second cylinder 202 and the second pressure sensor 203, the second cylinder 202 is connected to the male die 3, the second cylinder 202 has a second movable end, the second movable end stretches and contracts along the normal direction of the inner contact surface of the part 6, as shown in fig. 7, one end of the second movable end facing the part 6 is connected with a second abutting block 201, and the second abutting block 201 is used for abutting against the inner contact surface of the part 6; the second pressure sensor 203 is connected to the second abutting block 201, and the second pressure sensor 203 has a second contact 2031 penetrating through the second abutting block 201, a second varistor 2033 connected to one end of the second abutting block 201 facing away from the component 6, and a second spring 2032 abutting between the second contact 2031 and the second varistor 2033, and the second spring 2032 is in a compressed state.
As shown in fig. 10, the second contact block 201 is used to contact the inner contact surface of the component 6 in the pressing contact positioning, whereas the second contact 2031 contacts the component 6 and the second contact block 201 does not contact the component 6 in the zero-pressure limiting.
Through above-mentioned technical scheme, adopt the support component 2 that has pressure sensor and cylinder can be according to the self-adaptation of the free resilience volume of part 6 and adjust the supporting position, can not exert extra pressure to part 6 simultaneously and lead to its deformation, improved the supporting stability to part 6 in the free resilience volume detects.
As a preferred embodiment, as shown in fig. 3 and 5, the three-coordinate gauge clamping device further includes:
the first groove 1022 is formed in the side wall of the first movable end; the first grating scale 1040 is bonded to the first groove 1022; the first reading head 1041 is connected to the first cylinder 102 through a bracket 1023, and the first reading head 1041 is used for reading the scale of the first grating ruler 1040;
The second groove 2022 is formed on the side wall of the second movable end; the second grating scale 2041 is adhered to the second groove 2022; the second reading head 2042 is connected to the male die 3 through screws, and the second reading head 2042 is used for reading scales of the second grating ruler 2041.
When the electromagnetic valve micro-control cylinder is used, the movement quantity of the cylinder is accurately obtained through the grating ruler and the reading head, and the displacement of the electromagnetic valve micro-control cylinder is conveniently combined.
Through the technical scheme, the displacement of the pressing clamp assembly 1 and the displacement of the supporting assembly 2 are calibrated based on the grating ruler, so that the displacement precision is improved, the influence on the free rebound quantity of the part 6 is reduced, and the detection precision is improved.
As a preferred embodiment, as shown in fig. 6, the second contact 2031 has a sliding section 2031a, a threaded section 2031b, and a limiting section 2031c, the sliding section 2031a is connected to the second abutment 201 in a threaded manner, the threaded section 2031b is connected to the second abutment 201 in a threaded manner, and the limiting section 2031c is connected to the inner hole of the second abutment 201 in a sliding manner;
As shown in fig. 7, when the threaded section 2031b is screwed to the second abutment 201, the sliding section 2031a and the stopper section 2031c are not movable;
As shown in fig. 8, when the screw segment 2031b is separated from the second abutting block 201, the slide segment 2031a and the stopper segment 2031c are slidably connected to the second abutting block 201.
When in use, the threaded section 2031b can be screwed in or screwed out of the second abutting block 201 by rotating the second contact 2031, the thread adopts fine threads, the self-locking effect is better, and the thread of the second abutting block 201 can prevent the thread of the threaded section 2031b from entering the through hole when the thread does not rotate, so that the limiting state shown in fig. 8 is maintained, the threaded section 2031b is completely rotated to be combined, and the limiting section 2031c is blocked, so that the accurate height is obtained, and the hard support is provided for the part 6.
It should be noted that, as shown in fig. 3 and fig. 5, the press-clamping assembly 1 and the supporting assembly 2 have partially the same structure, and may be obtained according to the drawings, and will not be described herein.
By the above technical solution, the state of the support assembly 2 for adaptive support and the state of the support assembly 2 for conventional rigid support can be switched by using the threaded section 2031b of the second contact 2031, enhancing the adaptability of the device.
The embodiment also provides a three-coordinate gauge, as shown in fig. 1, which comprises a plurality of three-coordinate gauge clamping devices, wherein the three-coordinate gauge clamping devices are abutted against the positions where free rebound exists in the pre-analysis of the part 6; the base plate 4 is used for connecting the male die 3 and the pressing clamp 105 through screws; the reference block 5 is fixedly connected to the male die 3, the reference block 5 is used for positioning the Z direction of the part 6, and the reference block 5 is inserted with positioning pins used for limiting the X direction and the Y direction of the part 6.
Through the technical scheme, the zero position surface of the part 6 is supported by the reference block 5, the part 6 is prevented from sliding by adopting the positioning pin for positioning, and then the plurality of detecting tool clamping devices are arranged at positions where rebound occurs in the analysis of the part 6, so that the positioning accuracy of the detecting tool for detecting the free rebound quantity of the part 6 is improved, and the precision of the free rebound quantity detection is further improved.
The embodiment also provides a free rebound detection method, which comprises the following steps:
the three-coordinate gauge comprises the following steps:
step S1: clamping the part 6 by adopting a reference block 5 and a positioning pin;
step S2: pushing the pressing pliers 105 to approach the part 6 to a self-locking state;
Step S3: driving a plurality of first cylinders 102 to enable the first movable end to move towards the part 6 until the resistance of the first piezoresistor 1033 changes, and then adjusting the first cylinders 102 to retract to the critical position of the resistance change of the first piezoresistor 1033 through the size of the first grating scale 1040 recorded by the first reader 1041;
Step S4: and acquiring coordinates of a preset free rebound acquisition point by a three-coordinate detector.
Through the technical scheme, after the zero position surface of the part 6 is positioned by the reference block 5, zero pressure is applied to the part 6 through the pressing and clamping assemblies 1 to limit the zero pressure, so that the positioning precision of the part 6 during the detection of the free rebound quantity of the stamped part 6 is improved, and the precision of the detection of the free rebound quantity is further improved.
As a preferred embodiment, between the step S3 and the step S4, the method further includes:
Step S3-1: the plurality of second cylinders 202 are driven to move the second movable end toward the part 6 until the resistance of the second piezo-resistor 2033 changes, and then the second cylinders 202 are retracted to the critical position where the resistance of the second piezo-resistor 2033 changes by the second scale 2041 size adjustment recorded by the second readhead 2042.
Through above-mentioned technical scheme, adopt supporting component 2 cooperation press-clamping assembly 1 to exert the spacing of zero pressure to part 6 two sides simultaneously, further improved the anti deformability of part 6, improved the precision that the free resilience detected.
As a preferred embodiment, between the step S3-1 and the step S4, the method further comprises:
Step S3-2: the first cylinder 102 and the second cylinder 202 are driven to extend simultaneously, the extending speeds of the first cylinder 102 and the second cylinder 202 are respectively adjusted by adopting electromagnetic valves, the extending speeds of the first cylinder 102 and the second cylinder 202 are adjusted so that the curvatures of the resistance change curves of the first piezoresistor 1033 and the second piezoresistor 2033 are similar, and when the resistance values of the first piezoresistor 1033 and the second piezoresistor 2033 stop changing simultaneously, the first cylinder 102 and the second cylinder 202 are stopped from extending.
It should be noted that when a cylinder contacts the part 6, the part 6 is pressed to deform, the resilience force of the part 6 can cause uneven pressure on two sides, and then the electromagnetic valve controls the cylinder to adjust the expansion length, and when the two sides uniformly extend the compression spring, the change rates of the two piezoresistors can be the same, so that the pressure balance on the two sides can be ensured, and the deformation of the part 6 can not be caused.
Through the technical scheme, the same pressure is further synchronously applied on the basis of zero pressure limitation of the clamping assembly and the supporting assembly 2 until the clamping assembly and the supporting assembly 2 clamp the part 6, so that the clamping force which does not deform is obtained on the premise that the part 6 is kept in a free rebound state, the three-coordinate detection head is more resistant to deformation or displacement caused by contact, and the precision of free rebound quantity detection is further improved.
As a preferred embodiment, as shown in fig. 11, the step S3-2 further includes assigning the plurality of three-coordinate gauge clamping devices to a first group close to the reference block 5 and a second group far from the reference block 5, the first group including the first clamping assembly 1a, the second clamping assembly 1b, the first supporting assembly 2a and the second supporting assembly 2b, the second group including the third clamping assembly 1c, the fourth clamping assembly 1d, the third supporting assembly 2c and the fourth supporting assembly 2d, performing the operation of the step S3-2 on the first group, and performing the operation of the step S3-2 on the second group.
Through the technical scheme, the profile of the part 6 contacted by the first group of clamping devices close to the reference block 5 has smaller free resilience, after the part 6 is pressurized and positioned, the second group of clamping devices far away from the reference block 5 are operated, because the length of the movable section of the part 6 is reduced, the free activity is reduced at the part far away from the reference block 5, the interference of synchronous pressurization and positioning on free resilience detection is reduced, and the detection precision is improved.
The above description is merely an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present invention, and it is intended to cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a three-dimensional utensil clamping device of examining, its characterized in that includes press from both sides subassembly (1), press from both sides subassembly (1) include:
The pressing clamp (105) is provided with a handle and a locking end which are in transmission connection with each other, the handle drives the locking end to be close to or far away from the part (6), and the locking end is in a self-locking state when being nearest to the part (6);
The first cylinder (102) is connected to the locking end, the first cylinder (102) is provided with a first movable end, the first movable end stretches and contracts along the normal direction of the external contact surface of the part (6), one end of the first movable end, which faces the part (6), is connected with a first abutting block (101), and the first abutting block (101) is used for abutting against the external contact surface of the part (6);
The first pressure sensor (103) is connected to the first abutting block (101), the first pressure sensor (103) is provided with a first contact (1031) which is connected to the first abutting block (101) in a penetrating way, a first piezoresistor (1033) which is connected to the first abutting block (101) and is far away from one end of the part (6), and a first spring (1032) which is connected between the first contact (1031) and the first piezoresistor (1033) in a abutting way, and the first spring (1032) is in a compressed state.
2. The three-coordinate gauge clamping device of claim 1, further comprising a support assembly (2), the support assembly (2) comprising:
A second cylinder (202) connected to the male die (3), wherein the second cylinder (202) has a second movable end, the second movable end stretches and contracts along the normal direction of the inner contact surface of the part (6), one end of the second movable end, which faces the part (6), is connected with a second abutting block (201), and the second abutting block (201) is used for abutting against the inner contact surface of the part (6);
the second pressure sensor (203) is connected to the second abutting block (201), the second pressure sensor (203) is provided with a second contact (2031) which is connected to the second abutting block (201) in a penetrating way, a second piezoresistor (2033) which is connected to the second abutting block (201) and is far away from one end of the part (6), and a second spring (2032) which is connected between the second contact (2031) and the second piezoresistor (2033) in a abutting way, and the second spring (2032) is in a compressed state.
3. The three-dimensional inspection tool clamping device according to claim 2, further comprising:
A first groove (1022) open at a side wall of the first movable end;
A first grating scale (1040) connected to said first groove (1022);
A first reading head (1041) connected to the first cylinder (102), the first reading head (1041) being configured to read the scale of the first grating ruler (1040);
a second groove (2022) open at a side wall of the second movable end;
a second grating scale (2041) connected to the second groove (2022);
and the second reading head (2042) is connected to the male die (3), and the second reading head (2042) is used for reading the scales of the second grating ruler (2041).
4. The three-coordinate gauge clamping device according to claim 3, wherein the second contact (2031) has a sliding section (2031 a), a threaded section (2031 b) and a limiting section (2031 c), the sliding section (2031 a) is connected to the second abutment block (201) in a penetrating manner, the threaded section (2031 b) is connected to the second abutment block (201) in a threaded manner, and the limiting section (2031 c) is connected to an inner hole of the second abutment block (201) in a sliding manner;
When the threaded section (2031 b) is in threaded connection with the second abutment block (201), the sliding section (2031 a) and the limiting section (2031 c) are limited to move;
When the threaded section (2031 b) is separated from the second abutment (201), the sliding section (2031 a) and the limiting section (2031 c) are slidably connected to the second abutment (201).
5. A three-dimensional inspection tool, comprising:
A plurality of three-coordinate gauge clamping devices according to claim 4, which are abutted against the parts (6) in a position where free rebound exists in advance;
A base plate (4) for connecting the punch (3) and the presser clamp (105);
The reference block (5) is connected to the male die (3), the reference block (5) is used for positioning the Z direction of the part (6), and the reference block (5) is inserted with a positioning pin used for limiting the movement of the part (6) in the X direction and the Y direction.
6. A free rebound detection method, comprising:
use of a three-coordinate gauge according to claim 5;
step S1: clamping the part (6) by adopting the reference block (5) and the positioning pin;
Step S2: pushing the press jaw (105) to approach the part (6) until a self-locking state;
step S3: driving a plurality of first cylinders (102) to enable the first movable end to move towards the part (6) until the resistance of the first piezoresistor (1033) changes, and then adjusting the first cylinders (102) to retract to a critical position where the resistance of the first piezoresistor (1033) changes through the size of the first grating scale (1040) recorded by the first reader (1041);
step S4: and acquiring coordinates of a preset free rebound acquisition point through a three-coordinate detector.
7. The method of claim 6, further comprising, between step S3 and step S4:
Step S3-1: and driving a plurality of second cylinders (202) to enable the second movable end to move towards the part (6) until the resistance of the second piezoresistor (2033) changes, and then adjusting the second cylinders (202) to retract to the critical position where the resistance of the second piezoresistor (2033) changes through the size of the second grating scale (2041) recorded by the second read head (2042).
8. The free rebound detection method of claim 7, further comprising, between step S3-1 and step S4:
Step S3-2: simultaneously driving the first cylinder (102) and the second cylinder (202) to extend, respectively adjusting the extending speeds of the first cylinder (102) and the second cylinder (202) by adopting electromagnetic valves, and stopping extending the first cylinder (102) and the second cylinder (202) when the resistance values of the first piezoresistor (1033) and the second piezoresistor (2033) stop changing simultaneously by adjusting the extending speeds of the first cylinder (102) and the second cylinder (202) so that the curvatures of the resistance value change curves of the first piezoresistor (1033) and the second piezoresistor (2033) are similar.
9. The free rebound detection method according to claim 8, wherein the step S3-2 further comprises assigning in advance a plurality of the three-coordinate gauge clamping devices into a first group close to the reference block (5) and a second group distant from the reference block (5), performing the operation of the step S3-2 on the first group, and performing the operation of the step S3-2 on the second group.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202410874038.5A CN118408448B (en) | 2024-07-02 | 2024-07-02 | Three-coordinate gauge clamping device, gauge and free rebound detection method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202410874038.5A CN118408448B (en) | 2024-07-02 | 2024-07-02 | Three-coordinate gauge clamping device, gauge and free rebound detection method |
Publications (2)
Publication Number | Publication Date |
---|---|
CN118408448A true CN118408448A (en) | 2024-07-30 |
CN118408448B CN118408448B (en) | 2024-10-01 |
Family
ID=92032897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202410874038.5A Active CN118408448B (en) | 2024-07-02 | 2024-07-02 | Three-coordinate gauge clamping device, gauge and free rebound detection method |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN118408448B (en) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102490133A (en) * | 2011-12-01 | 2012-06-13 | 河海大学常州校区 | Modularizing multipoint flexible fixture |
CN203622260U (en) * | 2013-11-13 | 2014-06-04 | 重庆迪科机电设备有限公司 | Adjustable automatic fixture |
CN206648618U (en) * | 2016-11-15 | 2017-11-17 | 东莞东聚电子电讯制品有限公司 | A kind of pressure feedback Z axis automatic calibration mechanism |
CN207335582U (en) * | 2017-10-31 | 2018-05-08 | 安徽江淮汽车集团股份有限公司 | Cubing for detection pipe beam |
CN210476724U (en) * | 2019-09-17 | 2020-05-08 | 戴丽燕 | Controllable fixture of high accuracy stroke |
CN111992774A (en) * | 2020-07-24 | 2020-11-27 | 西安理工大学 | Intelligent reconfigurable drilling clamp for circumferential thin plate |
CN113732972A (en) * | 2021-08-16 | 2021-12-03 | 六安一六八航空航天精密器件有限公司 | Clamping equipment for clamping corrugated pipes with different sizes |
US20220161427A1 (en) * | 2020-11-23 | 2022-05-26 | Mitsubishi Electric Research Laboratories, Inc. | Multi-Tentacular Soft Robotic Grippers |
CN114833744A (en) * | 2022-04-28 | 2022-08-02 | 中国民用航空飞行学院 | Device for rapidly positioning and processing aviation plate |
CN117968599A (en) * | 2024-04-01 | 2024-05-03 | 四川职业技术学院 | Three-coordinate measurement auxiliary clamp and use method thereof |
-
2024
- 2024-07-02 CN CN202410874038.5A patent/CN118408448B/en active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102490133A (en) * | 2011-12-01 | 2012-06-13 | 河海大学常州校区 | Modularizing multipoint flexible fixture |
CN203622260U (en) * | 2013-11-13 | 2014-06-04 | 重庆迪科机电设备有限公司 | Adjustable automatic fixture |
CN206648618U (en) * | 2016-11-15 | 2017-11-17 | 东莞东聚电子电讯制品有限公司 | A kind of pressure feedback Z axis automatic calibration mechanism |
CN207335582U (en) * | 2017-10-31 | 2018-05-08 | 安徽江淮汽车集团股份有限公司 | Cubing for detection pipe beam |
CN210476724U (en) * | 2019-09-17 | 2020-05-08 | 戴丽燕 | Controllable fixture of high accuracy stroke |
CN111992774A (en) * | 2020-07-24 | 2020-11-27 | 西安理工大学 | Intelligent reconfigurable drilling clamp for circumferential thin plate |
US20220161427A1 (en) * | 2020-11-23 | 2022-05-26 | Mitsubishi Electric Research Laboratories, Inc. | Multi-Tentacular Soft Robotic Grippers |
CN113732972A (en) * | 2021-08-16 | 2021-12-03 | 六安一六八航空航天精密器件有限公司 | Clamping equipment for clamping corrugated pipes with different sizes |
CN114833744A (en) * | 2022-04-28 | 2022-08-02 | 中国民用航空飞行学院 | Device for rapidly positioning and processing aviation plate |
CN117968599A (en) * | 2024-04-01 | 2024-05-03 | 四川职业技术学院 | Three-coordinate measurement auxiliary clamp and use method thereof |
Non-Patent Citations (1)
Title |
---|
余海燕;江峰;李淑慧;: "基于柔性夹具的回弹测量方法研究", 汽车技术, no. 04, 24 April 2006 (2006-04-24), pages 38 - 41 * |
Also Published As
Publication number | Publication date |
---|---|
CN118408448B (en) | 2024-10-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN204854540U (en) | Utensil is examined to car oil tank ribbon rear portion mounting panel | |
CN118408448B (en) | Three-coordinate gauge clamping device, gauge and free rebound detection method | |
KR101835002B1 (en) | Devices for measurement of hole displacements | |
CN215930730U (en) | Detection tool structure applied to automobile part | |
CN113477806B (en) | Embedded self-adaptation intelligent regulation integrated mold | |
CN214747637U (en) | Size tolerance and geometric tolerance integrated stabilizer bar detection device | |
CN112179302B (en) | Position degree measuring device and position degree measuring method | |
CN115950330B (en) | Dimension measuring device | |
CN114719717B (en) | Die repairing method of stamping die | |
CN113776475B (en) | Measurement equipment and method for measuring shell size | |
CN114713661B (en) | Method for repairing stamping die by referring to workpiece rebound parameters | |
CN111829462B (en) | Flatness detection device and detection method thereof | |
CN100513990C (en) | Device for measuring braking clamp body with embedded sealing ring with floating reference | |
CN217953313U (en) | High-precision hole site detection device | |
CN211552792U (en) | Piston rod bending measuring device | |
CN212721377U (en) | Poor measuring equipment of electric air condition compressor section | |
EP1123170B1 (en) | Apparatus for bending workpieces and measuring device for such an apparatus | |
CN113720231A (en) | Detection process for automobile instrument board beam component assembly | |
CN214582955U (en) | Spoke outer diameter caliper gauge | |
CN220959949U (en) | Buffer block detection tool for detecting product surface profile | |
CN219223612U (en) | Shell shape deformation measuring jig | |
CN222279721U (en) | A flatness inspection tool | |
CN218973368U (en) | Automobile interior trim part positioning column position detection mechanism | |
CN113280776B (en) | Diameter measuring device | |
CN214333595U (en) | Automobile part detection device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |