Positioning and clamping jig
By using floating head ring positioning pins and shrapnel guide in the positioning clamping fixture, the problem of inaccurate positioning of the camera ring and shrapnel is solved, and the welding accuracy and yield rate are improved.
Patent Information
- Application Number
- CN202323497863.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2033-12-20
AI Technical Summary
In the prior art, the camera ring and shrapnel cannot guarantee the accuracy of the position before welding, resulting in insufficient relative position accuracy after welding, resulting in poor welding products.
Design a positioning clamping fixture, including positioning base, head ring positioning pin, cover plate pressing block and floating pin. Through the floating and shrapnel of the head ring positioning pin, the inclined surface is guided, eliminate the positioning tolerance of the camera ring and shrapnel, and improve its The accuracy of relative position.
The relative position accuracy of the camera ring and shrapnel is improved, the welding yield rate is improved, and the occurrence of defective welding products is avoided.
Smart Images
Figure CN222359558U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of tooling and fixtures, and in particular to a positioning and clamping fixture. Background Art
[0002] In related technical means, the spring clips welded on the camera ring are often positioned and clamped by a jig before welding to ensure the welding yield. The jig positioning base is used to fix the spring clip positioning pin to position the camera ring. The floating spring pin is used to position the spring clip. Since the multiple positioning holes of the camera ring have tolerances during the processing, the use of fixed positioning pins cannot avoid tolerance accumulation, and thus the accuracy of the camera ring position cannot be guaranteed. The cover plate pressure block only presses the spring clip, and cannot guarantee the accuracy of the camera ring position, resulting in insufficient relative position accuracy between the spring clip and the camera ring after welding, resulting in defective welding products. Utility Model Content
[0003] In view of this, the present application provides a positioning clamping fixture that can improve the problem of insufficient relative position accuracy between the spring piece and the camera ring after welding.
[0004] An embodiment of the present application provides a positioning clamping fixture for locating the relative position of a camera ring and a spring sheet and clamping them, the positioning clamping fixture comprising a positioning base, a head ring positioning pin, a cover plate pressing block and a head ring floating pin. The positioning base has a positioning boss, and the camera ring and the spring sheet are mounted on the positioning boss. The head ring positioning pin is floatingly mounted on the positioning base and extends out from the positioning boss, and a head ring guiding inclined surface is provided on the peripheral side of the head ring positioning pin, and the head ring guiding inclined surface is used to position the camera ring, and the cover plate pressing block is used to press the camera ring and the spring sheet against the positioning boss, and a spring sheet pressing platform is provided on the side of the cover plate pressing block close to the positioning base, and the spring sheet pressing platform is used to press the spring sheet. The height of the head ring floating pin extending out of the cover plate pressing block is greater than the height of the spring sheet pressing platform extending out of the cover plate pressing block.
[0005] This positioning clamping fixture uses a head ring positioning pin to position the camera ring, and a head ring guiding slope is provided on the circumference of the head ring positioning pin. When the cover plate pressing block presses the spring sheet and the camera ring, the head ring guiding slope can eliminate the positioning tolerance of the camera ring through the floating of the head ring positioning pin, thereby improving the relative position accuracy of the camera ring and the spring sheet, and then improving the relative position accuracy of the spring sheet and the camera ring after welding, and improving the welding yield rate. The height of the head ring floating spring pin extending out of the cover plate pressing block is greater than the height of the spring sheet pressing platform extending out of the cover plate pressing block. When the cover plate pressing block presses the spring sheet and the camera ring, the cover plate pressing block first presses the camera ring and then the spring sheet, thereby improving the positioning accuracy of the spring sheet.
[0006] In at least one embodiment, the positioning base includes a bottom plate, a positioning plate and a first baffle, the positioning plate is fixed to a side of the bottom plate close to the cover plate pressing block, the positioning boss is located on the positioning plate, and the first baffle is fixed to a side of the bottom plate away from the cover plate pressing block.
[0007] The positioning clamping fixture simplifies the processing of the positioning base by separately arranging the bottom plate, the positioning plate and the first baffle.
[0008] In at least one embodiment, the headband positioning pin includes a headband positioning column and a second elastic member, the positioning plate is provided with a positioning hole, the headband positioning column is slidably disposed in the positioning hole, one end of the second elastic member is abutted against the first baffle plate, the other end of the second elastic member is abutted against the headband positioning column, and the second elastic member has an elastic force driving the headband positioning column to move away from the first baffle plate.
[0009] In this positioning and clamping fixture, the head ring positioning column can be slidably arranged in the positioning hole, one end of the second elastic member abuts against the first baffle, and the other end of the second elastic member abuts against the head ring positioning column. When the cover plate pressing block presses the camera ring, the head ring positioning column positions the camera ring, and the second elastic member can play a buffering role. At the same time, when the cover plate pressing block presses the camera ring, the second elastic member can support the head ring positioning column to play a floating role, so as to eliminate the positioning tolerance of the camera ring, thereby improving the relative position accuracy of the camera ring and the spring.
[0010] In at least one embodiment, a plurality of the head ring positioning pins are provided, and the plurality of head ring positioning pins are installed on one of the positioning bosses for positioning the camera ring on the positioning boss.
[0011] This positioning and clamping fixture includes multiple head ring positioning pins, which are installed on a positioning boss. When the camera ring is installed on the positioning boss, the multiple head ring positioning pins can jointly position the camera ring to improve the positioning stability of the camera ring.
[0012] In at least one embodiment, the positioning and clamping fixture further includes a spring-type positioning pin, which is floatingly mounted on the positioning base and extends from the positioning boss, and a spring-type guiding slope is provided on the peripheral side of the spring-type positioning pin, and the spring-type guiding slope is used to position the spring.
[0013] This positioning and clamping fixture positions the spring piece by using a spring piece positioning pin, and a spring piece guiding inclined surface is arranged on the peripheral side of the spring piece positioning pin. When the cover plate pressing block presses the spring piece, the spring piece guiding inclined surface can eliminate the positioning tolerance of the spring piece through the floating of the spring piece positioning pin, thereby improving the relative position accuracy between the camera ring and the spring piece, and then improving the relative position accuracy between the spring piece and the camera ring after welding, thereby improving the welding yield rate.
[0014] In at least one embodiment, the positioning and clamping fixture further includes a head ring floating pin, which is floatingly mounted on the cover plate pressing block and extends from the cover plate pressing block toward the positioning base for pressing the camera ring.
[0015] This positioning clamping fixture presses the camera ring through the head ring floating pin, so that when the cover plate pressing block is pressing the camera ring, the head ring floating pin can float to play a buffering role, thereby improving the problem of the head ring floating pin colliding with the rigidity of the camera ring and damaging the camera ring.
[0016] In at least one embodiment, the positioning and clamping jig further includes a jig cover plate and a second baffle plate, the cover plate pressure block is installed on the jig cover plate, and the second baffle plate is fixed to the side of the jig cover plate away from the positioning base; the head ring floating spring pin includes a clamping column and a third elastic member, the cover plate pressure block is provided with a clamping through hole, the clamping column is slidably arranged in the clamping through hole, one end of the third elastic member is abutted against the second baffle plate, and the other end of the third elastic member is abutted against the clamping column, and the third elastic member has an elastic force to drive the clamping column to move away from the second baffle plate.
[0017] In this positioning and clamping fixture, the clamping column can be slidably arranged in the clamping through hole, one end of the third elastic member abuts against the second baffle, and the other end of the third elastic member abuts against the clamping column. When the cover plate pressing block presses the camera ring, the clamping column positions the camera ring, and the third elastic member can play a buffering role, thereby improving the problem of the clamping column damaging the camera ring due to rigid collision with the camera ring.
[0018] In at least one embodiment, the positioning and clamping jig further includes a guide pin, which is fixed to the side of the jig cover plate facing the positioning base; the base plate is correspondingly provided with a guide hole, which cooperates with the guide pin hole axis to guide and position the jig cover plate.
[0019] In this positioning and clamping jig, the guide pins on the jig cover can form a hole axis with the guide holes on the base plate to guide and position the jig cover, thereby improving the problem of the jig cover and the base plate being misaligned when the jig cover is closed, thereby crushing the camera ring and the shrapnel.
[0020] In at least one embodiment, the positioning and clamping fixture further includes a protection frame having a protection space, and the head ring floating spring pin extends from the cover plate pressing block and is located in the protection space.
[0021] In this positioning and clamping fixture, the head ring floating pin extends from the cover plate pressing block and is located in the protective space of the protective frame, so as to improve the problem that the floating pin and the shrapnel pressing block on the cover plate pressing block are broken by lateral force during transportation or disassembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the overall structure of a positioning and clamping fixture in one embodiment of the present application.
[0023] Figure 2 It is a schematic diagram of the structure in which the fixture cover and the positioning base are separated in one embodiment of the present application.
[0024] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A.
[0025] Figure 4 It is a schematic diagram of the structural explosion of the positioning base in one embodiment of the present application.
[0026] Figure 5 It is a schematic diagram of the structure explosion of the fixture cover in one embodiment of the present application.
[0027] Figure 6 It is a schematic diagram of the structure of the cover plate pressing block in one embodiment of the present application.
[0028] Main component symbols
[0029] 001 Positioning clamping fixture
[0030] 100 Fixture cover
[0031] 110 Cover plate block
[0032] 120 Clamp installation slot
[0033] 111 Head ring floating pin
[0034] 1111 Compression column
[0035] 1112 third elastic member
[0036] 112 Shrapnel Press
[0037] 113 Press vias
[0038] 200 Second baffle
[0039] 300 Positioning base
[0040] 310 Base Plate
[0041] 311 Guide hole
[0042] 312 Container
[0043] 320 Positioning Plate
[0044] 321 Positioning boss
[0045] 3211 Positioning hole
[0046] 330 First baffle
[0047] 340 Storage Space
[0048] 400 Spring Locating Pin
[0049] 410 Spring Clip Positioning Column
[0050] 411 Spring guide ramp
[0051] 420 first elastic member
[0052] 500 Head ring positioning pin
[0053] 510 Head ring positioning column
[0054] 511 Headband Guide Bevel
[0055] 520 second elastic member
[0056] 600 Guide pin
[0057] 700 protective frame
[0058] 710 Protective Space
[0059] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION
[0060] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.
[0061] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centrally arranged element at the same time. When an element is considered to be "set" to another element, it may be directly set on the other element or there may be a centrally arranged element at the same time. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0062] In related technical means, the camera ring and the spring clip need to be positioned before welding. Since the multiple positioning holes of the camera ring have tolerances during the processing, the cover plate pressing block only presses the spring clip and cannot guarantee the accuracy of the camera ring position, resulting in insufficient relative position accuracy of the spring clip after welding, resulting in defective welding products.
[0063] An embodiment of the present application provides a positioning and clamping fixture, which installs a spring-clip positioning pin on a positioning base in a floating manner. The spring-clip guiding slope arranged on the peripheral side of the spring-clip positioning pin can eliminate the positioning tolerance of the spring clip through the floating of the spring-clip positioning pin during the process of the cover plate pressing block pressing the spring clip, thereby improving the relative position accuracy of the camera ring and the spring clip.
[0064] Specifically, an embodiment of the present application provides a positioning clamping fixture for locating the relative position of a camera ring and a spring sheet and clamping them. The positioning clamping fixture includes a positioning base, a spring sheet positioning pin, a cover plate pressing block, and a head ring floating pin. The positioning base has a positioning boss, and the camera ring and the spring sheet are mounted on the positioning boss. The spring sheet positioning pin is floatingly mounted on the positioning base and extends from the positioning boss. The circumferential side of the spring sheet positioning pin is provided with a spring sheet guiding inclined surface, and the spring sheet guiding inclined surface is used to position the spring sheet. The cover plate pressing block is used to press the camera ring and the spring sheet against the positioning boss. A spring sheet pressing platform is provided on one side of the cover plate pressing block close to the positioning base, and the spring sheet pressing platform is used to press the spring sheet. The height of the head ring floating pin extending from the cover plate pressing block is greater than the height of the spring sheet pressing platform extending from the cover plate pressing block. When the cover plate pressing block presses the spring sheet and the camera ring, the cover plate pressing block first presses the camera ring and then presses the spring sheet, thereby improving the positioning accuracy of the spring sheet. When the cover plate pressing block presses the spring piece, the spring piece guiding slope can eliminate the positioning tolerance of the spring piece through the floating of the spring piece positioning pin, thereby improving the relative position accuracy between the camera ring and the spring piece, and further improving the relative position accuracy between the spring piece and the camera ring after welding, thereby improving the welding yield rate.
[0065] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features in the following embodiments and examples can be combined with each other.
[0066] Figure 1 A schematic diagram of the overall structure of a positioning and clamping fixture 001 in one embodiment of the present application is shown.
[0067] Figure 2 A schematic structural diagram of the separation of the fixture cover plate 100 and the positioning base 300 in one embodiment of the present application is shown.
[0068] See also Figure 1 and Figure 2One embodiment of the present application provides a positioning clamping fixture 001 for positioning the relative position of the camera ring and the spring sheet and clamping them. The positioning clamping fixture 001 includes a positioning base 300, a spring sheet positioning pin 400, and a cover plate pressing block 110. The spring sheet positioning pin 400 is used to position the spring sheet on the positioning base 300, and the cover plate pressing block 110 is used to press the camera ring and the spring sheet on the positioning base 300.
[0069] The positioning base 300 has a positioning boss 321, the camera ring and the spring are installed on the positioning boss 321, the camera ring and the spring are installed on the positioning boss 321, the spring positioning pin 400 is floatingly installed on the positioning base 300 and extends from the positioning boss 321, and the spring guiding bevel 411 is arranged on the peripheral side of the spring positioning pin 400. During the process of the cover plate pressing block 110 pressing the spring, the spring guiding bevel 411 can eliminate the positioning tolerance of the spring through the floating of the spring positioning pin 400, thereby improving the relative position accuracy of the camera ring and the spring, and then improving the relative position accuracy of the spring and the camera ring after welding, thereby improving the welding yield rate.
[0070] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A. Figure 4 A schematic diagram of a structural explosion of a positioning base 300 in an embodiment of the present application is shown.
[0071] See also Figure 2 , Figure 3 and Figure 4 In some embodiments, the positioning base 300 includes a positioning plate 320, a bottom plate 310 and a first baffle 330 which are arranged in sequence from top to bottom, that is, the positioning plate 320 is fixed above the bottom plate 310, and the first baffle 330 is fixed below the bottom plate 310.
[0072] A receiving groove 312 is formed in the middle of the bottom plate 310 . The positioning plate 320 and the first baffle plate 330 respectively cover the two opening end surfaces of the receiving groove 312 to form an receiving space 340 .
[0073] The positioning boss 321 is located on the upper surface of the positioning plate 320, the spring positioning pin 400 is installed on the positioning boss 321 and is partially located in the accommodating space 340, one end of the spring positioning pin 400 abuts against the first baffle 330, and the other end of the spring positioning pin 400 passes through the positioning plate 320 and extends out of the positioning boss 321. By removing the positioning plate 320 from the bottom plate 310, the spring positioning pin 400 can be conveniently installed in the accommodating space 340, thereby improving the installation convenience of the spring positioning pin 400.
[0074] In some embodiments, the spring clip positioning pin 400 includes a spring clip positioning column 410 and a first elastic member 420 , and the spring clip guiding inclined surface 411 is located at an upper portion of a side surface of the spring clip positioning column 410 .
[0075] In some embodiments, the spring guide slope 411 is configured in a conical shape to facilitate centering of the spring.
[0076] In some embodiments, the positioning plate 320 is provided with a positioning hole 3211, the spring piece positioning column 410 is slidably disposed in the positioning hole 3211, one end of the first elastic member 420 abuts against the first baffle 330, and the other end of the first elastic member 420 abuts against the spring piece positioning column 410, and the first elastic member 420 has an elastic force that drives the spring piece positioning column 410 to move away from the first baffle 330. When the cover plate pressing block 110 presses the spring piece, the spring piece positioning column 410 positions the spring piece, and the first elastic member 420 can play a buffering role. At the same time, when the cover plate pressing block 110 presses the spring piece, the first elastic member 420 can support the spring piece positioning column 410 to play a floating role, so as to eliminate the positioning tolerance of the spring piece, thereby improving the relative position accuracy of the camera ring and the spring piece.
[0077] In some embodiments, the first elastic member 420 is a spring. In other embodiments, the first elastic member 420 may also be a structure capable of generating thrust, such as elastic soft glue or a pair of mutually repelling magnets.
[0078] In some embodiments, a plurality of spring-piece positioning pins 400 are provided, and the plurality of spring-piece positioning pins 400 are installed on the same positioning boss 321. When the spring piece is installed on the positioning boss 321, the plurality of spring-piece positioning pins 400 can jointly position the spring piece to improve the positioning stability of the spring piece.
[0079] In some embodiments, two spring-piece positioning pins 400 are provided. When the spring piece is mounted on the positioning boss 321 , the two spring-piece positioning pins 400 can limit the rotational freedom of the spring piece to improve the positioning stability of the spring piece.
[0080] In some embodiments, the positioning and clamping fixture 001 also includes a head ring positioning pin 500, which is floatingly installed on the positioning base 300 and extends from the positioning boss 321. A head ring guide slope 511 is provided on the peripheral side of the head ring positioning pin 500. During the process of the cover plate pressing block 110 pressing the camera ring, the head ring guide slope 511 can eliminate the positioning tolerance of the camera ring through the floating of the head ring positioning pin 500, thereby improving the relative position accuracy of the camera ring and the spring piece, and then improving the relative position accuracy of the spring piece and the camera ring after welding, thereby improving the welding yield rate.
[0081] In some embodiments, the headband positioning pin 500 includes a headband positioning column 510 and a second elastic member 520 , and the headband guiding slope 511 is located at the upper part of the side of the headband positioning column 510 .
[0082] In some embodiments, the head ring guide slope 511 is configured in a conical shape to facilitate centering of the camera ring.
[0083] In some embodiments, the head ring positioning column 510 is slidably disposed in the positioning hole 3211, one end of the second elastic member 520 abuts against the first baffle 330, and the other end of the second elastic member 520 abuts against the head ring positioning column 510, and the second elastic member 520 has an elastic force that drives the head ring positioning column 510 to move away from the first baffle 330. When the cover plate pressing block 110 presses the camera ring, the head ring positioning column 510 positions the camera ring, and the second elastic member 520 can play a buffering role. At the same time, when the cover plate pressing block 110 presses the camera ring, the second elastic member 520 can support the head ring positioning column 510 to play a floating role, so as to eliminate the positioning tolerance of the camera ring, thereby improving the relative position accuracy of the camera ring and the spring.
[0084] In some embodiments, the second elastic member 520 is a spring. In other embodiments, the second elastic member 520 can also be a structure capable of generating thrust, such as elastic soft glue or a pair of mutually repelling magnets.
[0085] In some embodiments, a plurality of head ring positioning pins 500 are provided, and the plurality of head ring positioning pins 500 are installed on the same positioning boss 321. When the camera ring is installed on the positioning boss 321, the plurality of head ring positioning pins 500 can jointly position the camera ring to improve the positioning stability of the camera ring.
[0086] In some embodiments, two head ring positioning pins 500 are provided. When the camera ring is mounted on the positioning boss 321 , the two head ring positioning pins 500 can limit the rotational freedom of the camera ring to improve the positioning stability of the camera ring.
[0087] In some embodiments, the two head ring positioning pins 500 have different contour shapes, and the different contour shapes are adapted to the holes of different shapes on the camera ring, thereby playing an anti-misalignment role and improving the problem of angle misalignment of the camera ring during installation.
[0088] In some embodiments, a camera ring and a spring sheet constitute a group of welding units, and a plurality of positioning bosses 321 are distributed on the upper surface of the positioning plate 320, and a plurality of spring sheet positioning pins 400 and a plurality of head ring positioning pins 500 are installed in each positioning boss 321, and each positioning boss 321 can position and install a group of welding units. The positioning plate 320 can position multiple welding units at one time to improve the positioning efficiency of the positioning clamping fixture 001, thereby improving the processing efficiency of the camera ring and the spring sheet.
[0089] In some embodiments, four positioning bosses 321 are distributed on the upper surface of the positioning plate 320 , and the four positioning bosses 321 are distributed on the upper surface of the positioning plate 320 in a rectangular shape and correspond to each other.
[0090] Figure 5 A schematic diagram of an exploded structure of a jig cover plate 100 in one embodiment of the present application is shown. Figure 6 A schematic structural diagram of a cover plate pressing block 110 in an embodiment of the present application is shown.
[0091] See also Figure 2 , Figure 5 and Figure 6 The positioning and clamping fixture 001 also includes a fixture cover plate 100, a cover plate pressing block 110 and a second stopper 200 installed on the fixture cover plate 100. The fixture cover plate 100 is provided with a plurality of pressing block installation grooves 120, and the cover plate pressing block 110 is provided with a plurality of cover plate pressing blocks 110, each of which is installed in a pressing block installation groove 120, and the second stopper is fixed above the fixture cover plate 100.
[0092] In some embodiments, an elastic member is disposed between the cover plate pressing block 110 and the second stopper, so that the cover plate pressing block 110 can float in the pressing block installation groove 120 in a direction approaching or moving away from the positioning base 300 .
[0093] In some embodiments, the positioning and clamping fixture 001 also includes a head ring floating pin 111, which is floatingly installed on the cover plate pressing block 110 and extends from the cover plate pressing block 110 toward the positioning base 300, so that when the cover plate pressing block 110 is pressing the camera ring, the head ring floating pin 111 can float to play a buffering role, thereby improving the problem of the head ring floating pin 111 damaging the camera ring due to rigid collision with the camera ring.
[0094] In some embodiments, the head ring floating pin 111 includes a clamping column 1111 and a third elastic member 1112. The cover plate clamp 110 is provided with a clamping through hole 113. The clamping column 1111 is slidably provided in the clamping through hole 113. One end of the third elastic member 1112 abuts against the second baffle 200, and the other end of the third elastic member 1112 abuts against the clamping column 1111. The third elastic member 1112 has an elastic force that drives the clamping column 1111 to move away from the second baffle 200. When the cover plate clamp 110 clamps the camera ring, the clamping column 1111 positions the camera ring, and the third elastic member 1112 can play a buffering role, thereby improving the problem of the clamping column 1111 colliding with the rigidity of the camera ring and damaging the camera ring.
[0095] In some embodiments, a spring plate pressing platform 112 is provided on one side of the cover plate pressing block 110 close to the base plate 310, and the spring plate pressing platform 112 is used to press the spring plate. The height of the head ring floating spring pin 111 extending out of the cover plate pressing block 110 is greater than the height of the spring plate pressing platform 112 extending out of the cover plate pressing block 110. When the cover plate pressing block 110 presses the spring plate and the camera ring, the cover plate pressing block 110 presses the camera ring first and then presses the spring plate, thereby improving the positioning accuracy of the spring plate.
[0096] See also Figure 2 and Figure 5 In some embodiments, the positioning clamping fixture 001 further includes a guide pin 600, which is fixed to the side of the fixture cover plate 100 facing the positioning base 300. Correspondingly, the bottom plate 310 is provided with a guide hole 311, which cooperates with the hole axis of the guide pin 600 to guide and position the fixture cover plate 100, thereby improving the problem that the fixture cover plate 100 and the bottom plate 310 are misaligned when the fixture cover plate 100 is closed, thereby crushing the camera ring and the spring.
[0097] In some embodiments, the positioning and clamping fixture 001 also includes a protective frame 700, which has a protective space 710. The head ring floating spring pin 111 extends from the cover plate pressing block 110 and is located in the protective space 710 to improve the problem of the floating spring pin and the shrapnel pressing block on the cover plate pressing block 110 being broken by lateral force during transportation or disassembly.
[0098] When this positioning and clamping jig locates the relative position of the camera ring and the spring sheet and clamps them, first a camera ring and a spring sheet form a group of welding units and install them on the positioning boss 321 on the upper surface of the positioning plate 320. Since there are multiple positioning bosses 321 distributed on the upper surface of the positioning plate 320, each positioning boss 321 is installed with multiple spring sheet positioning pins 400 and multiple head ring positioning pins 500, and each positioning boss 321 can position and install a group of welding units. When the jig cover 100 is pressed against the positioning base 300, multiple spring sheet positioning pins 400 extending from the positioning boss 321 position the spring sheet, and multiple head ring positioning pins 500 extending from the positioning boss 321 position the camera ring.
[0099] Compared with the use of fixed positioning pins in related technical means, tolerance accumulation cannot be avoided. After the camera ring is installed on the fixed positioning pin, the camera ring does not fit with the fixture positioning base, and thus the accuracy of the camera ring position cannot be guaranteed. In the present application, the spring guide bevel 411 on the spring positioning pin 400 can support the spring positioning column 410 to play a floating role during the process of the cover plate pressing block 110 pressing the spring plate, so that the bottom surface of the spring plate fits the upper surface of the positioning boss 321 to eliminate the positioning tolerance of the spring plate. The head ring guide bevel 511 on the head ring positioning pin 500 can support the head ring positioning column 510 to play a floating role during the process of the cover plate pressing block 110 pressing the camera ring, so that the bottom surface of the camera ring fits the upper surface of the positioning boss 321 to eliminate the positioning tolerance of the camera ring. The height of the head ring floating spring pin 111 extending out of the cover plate pressing block 110 is greater than the height of the spring plate pressing platform 112 extending out of the cover plate pressing block 110. When the cover plate pressing block 110 presses the spring plate and the camera ring, the cover plate pressing block 110 first presses the camera ring and then presses the spring plate, thereby improving the positioning accuracy of the spring plate.
[0100] In addition, those skilled in the art may also make other changes within the technical concept of the present application. Of course, these changes made based on the technical concept of the present application should be included in the scope disclosed in the present application.
Claims
1. A positioning and clamping fixture, used to locate the relative position of a camera ring and a spring sheet and clamp them, characterized in that: include: A positioning base, wherein the positioning base has a positioning boss, and the camera ring and the spring sheet are mounted on the positioning boss; A head ring positioning pin, wherein the head ring positioning pin is floatingly mounted on the positioning base and extends from the positioning boss, and a head ring guiding inclined surface is arranged on the peripheral side of the head ring positioning pin, and the head ring guiding inclined surface is used for positioning the camera ring; A cover plate pressing block, the cover plate pressing block is used to press the camera ring and the spring sheet onto the positioning boss, a spring sheet pressing platform is provided on one side of the cover plate pressing block close to the positioning base, and the spring sheet pressing platform is used to press the spring sheet; A head ring floating elastic pin, wherein the height of the head ring floating elastic pin extending out of the cover plate pressing block is greater than the height of the spring sheet pressing platform extending out of the cover plate pressing block.
2. The positioning and clamping fixture according to claim 1, characterized in that: The positioning base includes a bottom plate, a positioning plate and a first baffle, wherein the positioning plate is fixed to a side of the bottom plate close to the cover plate pressing block, the positioning boss is located on the positioning plate, and the first baffle is fixed to a side of the bottom plate away from the cover plate pressing block.
3. The positioning and clamping fixture according to claim 2, characterized in that: The headband positioning pin includes a headband positioning column and a second elastic member. The positioning plate is provided with a positioning hole. The headband positioning column can be slidably arranged in the positioning hole. One end of the second elastic member abuts against the first baffle plate, and the other end of the second elastic member abuts against the headband positioning column. The second elastic member has an elastic force that drives the headband positioning column to move away from the first baffle plate.
4. The positioning and clamping fixture according to claim 1, characterized in that: There are multiple head ring positioning pins, and the multiple head ring positioning pins are installed on one positioning boss to position the camera ring on the positioning boss.
5. The positioning and clamping fixture according to claim 1, characterized in that: The positioning clamping fixture also includes a spring-type positioning pin, which is floatingly mounted on the positioning base and extends from the positioning boss. A spring-type guiding slope is arranged on the peripheral side of the spring-type positioning pin, and the spring-type guiding slope is used to position the spring.
6. The positioning and clamping fixture according to claim 2, characterized in that: The head ring floating spring pin is floatedly mounted on the cover plate pressing block and extends from the cover plate pressing block toward the positioning base, so as to press the camera ring.
7. The positioning and clamping fixture according to claim 6, characterized in that: The positioning and clamping jig also includes a jig cover and a second baffle, the cover pressure block is installed on the jig cover, and the second baffle is fixed to the side of the jig cover away from the positioning base; the head ring floating spring pin includes a clamping column and a third elastic member, the cover pressure block is provided with a clamping through hole, the clamping column is slidably arranged in the clamping through hole, one end of the third elastic member is abutted against the second baffle, and the other end of the third elastic member is abutted against the clamping column, and the third elastic member has an elastic force to drive the clamping column to move away from the second baffle.
8. The positioning and clamping fixture according to claim 7, characterized in that: The positioning and clamping fixture also includes a guide pin, which is fixed to the side of the fixture cover plate facing the positioning base; the base plate is correspondingly provided with a guide hole, and the guide hole cooperates with the guide pin hole axis to guide and position the fixture cover plate.
9. The positioning and clamping fixture according to claim 6, characterized in that: The positioning and clamping fixture also includes a protection frame having a protection space, and the head ring floating elastic pin extends from the cover plate pressing block and is located in the protection space.