Optical communication module PCBA program downloading device
Technical Field
The utility model relates to an optical communication technical field particularly, relates to an optical communication module PCBA program downloading device.
Background
The rise of the optical communication module industry is greatly promoted by the rapid development of the global communication technology. To have a place in the optical communication module industry, the advanced technology and reliable quality support of the optical communication module are required to be relied on, and the number of the optical communication modules is required to be used as a support. In a limited place and under the condition of manpower, the production efficiency is only improved by a method for improving the production quantity of the optical communication modules as much as possible.
The downloading of the PCBA program of the optical communication module is an important support link for later-stage index tests of the optical communication module, and the production of the optical communication module is greatly promoted by improving the downloading efficiency of the PCBA program of the optical communication module.
For example, the existing program downloading scheme of the optical communication module PCBA is as follows: the golden finger part of the PCBA board is directly inserted into the socket of the test board, the program downloading probe is welded on a PCB bare board after being adjusted to a certain distance, and then the program downloading data wire is welded at the tail part of the program downloading probe. The PCB board welded with the program downloading probe and the program downloading data line is held by hand to align and contact the PCBA program downloading hole and the needle head of the program downloading probe, and the program is downloaded after the position is confirmed; however, this solution has at least the following disadvantages: 1) because the inside of the program downloading probe is of a spring structure, the program downloading probe can be invalid after being used for a certain number of times, and the probe needs to be replaced frequently; the program downloading probe, the program downloading data wire and the PCB bare board are welded into a whole, so that the replacement of the program downloading probe is very troublesome; the efficiency of downloading the PCBA program is also influenced; 2) the program downloading probe and the PCBA program downloading hole are aligned manually each time, and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an optical communication module PCBA procedure download device has the PCBA board and changes efficiently, and procedure download probe is changed conveniently, and procedure download probe and PCBA procedure download pore pair advantage such as convenient can effectively solve the problem that exists in the background art.
The embodiment of the utility model discloses a realize through following technical scheme: an optical communication module PCBA program downloading device, comprising:
the test bed is provided with a support frame;
the motion platform is used for placing a test board, is arranged on the test board, and consists of a plurality of layers of sliding tables, wherein each sliding table comprises an X-axis linear sliding table, a Y-axis linear sliding table and an R-axis rotary sliding table;
the pressing component is used for installing the probe component and arranged on the supporting frame, and comprises an installation plate for installing the probe component and a lifting piece for driving the probe component to move up and down;
the probe assembly comprises two telescopic probes and a probe mounting plate, wherein the telescopic probes are arranged and constructed to be in contact with the test plate under the driving of the lifting piece, 2 through holes which have a certain angle and are not communicated are formed in the probe mounting plate, the telescopic probes are arranged in the through holes, and the distance between needle heads can be adjusted by adjusting the length of the telescopic probes extending out of the probe mounting plate;
and one end of the conductive piece is connected to the data input end through the program download data line, and the other end of the conductive piece is connected with the telescopic probe so as to realize data communication between the program download data line and the telescopic probe.
According to a preferred embodiment, the pressing assembly further comprises a guide rail and a sliding block, the guide rail is mounted on the mounting plate, the sliding block is in sliding connection with the guide rail, and the probe mounting plate is arranged on the sliding block.
According to a preferred embodiment, the lifter includes handle, crescent and connecting rod, handle one end is the perk structure, and the other end is connected to the mounting panel, crescent one end is connected with the handle, and the other end is connected with the connecting rod, the connecting rod is connected to the probe mounting panel.
According to a preferred embodiment, be provided with L type limiting plate on the mounting panel, the handle the other end is connected with the long end of L type limiting plate, first via hole has been seted up on the short end of L type limiting plate, the connecting rod runs through first via hole setting.
According to a preferred embodiment, be provided with spacing guide rail, golden finger socket and PCBA cassette on the survey test panel, spacing guide rail bottom and survey test panel are connected, PCBA cassette sliding connection is on spacing guide rail, wherein, be equipped with spacing boss, support boss and afterbody on the PCBA cassette and push away the handle, golden finger socket butt is kept away from afterbody to PCBA cassette and is pushed away one side of the handle.
According to a preferred embodiment, the probe mounting plate is made of a non-conductive material.
According to a preferred embodiment, the X-axis linear sliding table comprises a first base, a transmission sliding block, a cover plate, a first screw and a first bearing, wherein a second through hole is formed in the top of the first base along the X-axis direction, the first bearing is arranged in the second through hole, one end of a threaded screw rod of the first screw penetrates through the first bearing and extends into the X-axis linear sliding table, the transmission sliding block is in threaded fit with the threaded screw rod of the first screw, and the top of the transmission sliding block is fixedly connected with the cover plate.
According to a preferred embodiment, the structure of the Y-axis linear sliding table is the same as that of the X-axis linear sliding table.
According to a preferred embodiment, the R-axis rotary sliding table comprises a second base, a disc, a second bearing, a second screw and a third bearing, wherein the disc is formed by a three-layer structure and sequentially comprises an upper layer, a middle layer and a lower layer from top to bottom, a groove is formed in the top of the second base corresponding to the middle layer, the second bearing is arranged in the groove, the lower layer is in rotary fit with the second bearing, and the lower edge of the middle layer is provided with a conical gear tooth;
the lateral wall of the second base is provided with a third through hole along the X-axis direction, the third bearing is arranged in the third through hole, one end of the threaded screw rod of the second screw rod penetrates through the third bearing and extends into the groove, and the threaded screw rod of the second screw rod is meshed with the conical gear teeth. According to a preferred embodiment, a rubber foot pad is arranged below the test bench.
The utility model discloses technical scheme has following advantage and beneficial effect at least:
1) the program downloading efficiency is high, and after the device is assembled and debugged for the first time, the PCBA program can be downloaded only by putting the PCBA board into the PCBA clamping seat, pushing the PCBA board into the limiting guide rail, pulling down the handle and executing a program downloading command. The whole process is simple and quick, the efficiency is high, and the problem of low program downloading efficiency of the PCBA of the optical communication module is solved;
2) the program downloading probe is convenient to replace, and can be taken out of the probe mounting plate for replacement only by loosening the screw for clamping and fixing the program downloading probe after the program downloading probe fails, so that the problem of troublesome replacement after the program downloading probe fails is solved;
3) the program downloading probe and the PCBA program downloading hole are convenient to align, and the accurate alignment of the program downloading probe and the PCBA program downloading hole is realized by adjusting the support frame and the motion platform, so that the alignment problem of the program downloading probe and the PCBA program downloading hole is solved;
4) the program downloading is reliable, the contact height between the golden finger part of the PCBA board and the golden finger saddle is high and reliable by limiting the movement path and the movement position of the PCBA cassette provided with the PCBA board, and the problem that the contact of the golden finger part of the PCBA board is unreliable in the program downloading process is solved;
5) the compatibility is good, and the external dimension of the PCBA board is basically kept consistent due to the establishment of the international optical communication module standard, so that the device can be compatible with more program downloads of PCBA boards of the same type; even though the difference of the overall dimension of the PCBA board is large, the PCBA program can be downloaded only by replacing the PCBA clamping seat and the limiting guide rail.
Drawings
Fig. 1 is a schematic view of an overall structure of a program downloading device of a PCBA for an optical communication module according to embodiment 1 of the present invention;
fig. 2 is an assembly view of parts of a test bench provided in embodiment 1 of the present invention;
fig. 3 is an assembly view of parts of the X-axis linear sliding table and the Y-axis linear sliding table provided in embodiment 1 of the present invention;
fig. 4 is a part assembly view of the R-axis rotary slide table provided in embodiment 1 of the present invention;
fig. 5 is an assembly view of parts of the pressing assembly provided in embodiment 1 of the present invention;
fig. 6 is a part assembly view of the test board provided in embodiment 1 of the present invention;
fig. 7 is a schematic structural diagram of a test board provided in embodiment 1 of the present invention;
fig. 8 is a cross-sectional view of a pogo pin according to embodiment 1 of the present invention;
fig. 9 is a schematic structural view of a PCBA board provided in embodiment 1 of the present invention;
fig. 10 is a cross-sectional view of a probe mounting plate provided in embodiment 1 of the present invention;
fig. 11 is a schematic structural diagram of a PCBA cassette provided in embodiment 1 of the present invention;
fig. 12 is a schematic structural view of a PCBA guide rail provided in embodiment 1 of the present invention;
fig. 13 is a schematic structural diagram of a conductive member according to embodiment 1 of the present invention;
fig. 14 is a cross-sectional view of a transverse connection plate according to embodiment 1 of the present invention;
fig. 15 is a schematic structural diagram of a probe assembly provided in embodiment 1 of the present invention;
fig. 16 is a schematic structural view of a pressing assembly provided in embodiment 1 of the present invention;
icon: 1-rubber foot pad, 2-first screw, 3-second screw, 4-third screw, 5-support column, 6-locking knob, 7-transverse connecting plate, 701-half side threaded hole, 702-half side through hole, 703-part mounting hole, 8-support column mounting plate, 9-base plate, 10-first screw, 11-first base, 12-locking sheet, 13-first bearing, 14-transmission sliding block, 15-cover plate, 16-countersunk screw, 17-first locking screw, 18-spring gasket, 19-pan head screw, 20-second base, 21-second locking screw, 22-second bearing, 23-disc, 24-third bearing, 25-second screw, 26-telescopic probe, 261-probe rod, 262-spring, 263-needle head, 27-fourth screw, 28-slider connecting plate, 29-fifth screw, 30-limit nut, 31-slider, 32-sixth screw, 33-guide rail, 34-mounting plate, 35-seventh screw, 36-cylindrical chuck, 37-vertical connecting plate, 38-handle, 39-eighth screw, 40-crescent plate, 41-ninth screw, 42-program download data line, 43-limit plate, 44-tenth screw, 45-conductive piece, 46-eleventh screw, 47-probe mounting plate, 48-connecting rod, 49-twelfth screw, 50-test plate mounting plate, 51-thirteenth screw, 52-fourteenth screw, 53-PCAB plate, 531-PCBA golden finger, 532-semicircular hole, 533-program downloading hole, 54-PCAB cassette, 55-limit guide rail, 56-test plate, 57-fifteenth screw, 58-stud, 100-test table, 200-motion platform, 210-X axis linear sliding table, 220-Y axis linear sliding table, 230-R axis rotary sliding table, 300-pressing component and 400-probe component.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Example 1
Referring to fig. 1, fig. 1 is a schematic structural diagram illustrating an optical communication module PCBA program downloading device according to this embodiment.
The research of the applicant finds that the program downloading of the PCBA of the optical communication module is an important support link for later-stage index tests of the optical communication module, and the improvement of the program downloading efficiency of the PCBA of the optical communication module greatly promotes the production of the optical communication module. The prior art has the following scheme: the golden finger part of the PCBA board is directly inserted into the socket of the test board, the program downloading probe is welded on a PCB bare board after being adjusted to a certain distance, and then the program downloading data wire is welded at the tail part of the program downloading probe. The PCB board welded with the program downloading probe and the program downloading data line is held by hand to align and contact the PCBA program downloading hole and the needle head of the program downloading probe, and the program is downloaded after the position is confirmed; however, this solution has at least the following disadvantages: 1) because the inside of the program downloading probe is of a spring structure, the program downloading probe can be invalid after being used for a certain number of times, and the probe needs to be replaced frequently; the program downloading probe, the program downloading data wire and the PCB bare board are welded into a whole, so that the replacement of the program downloading probe is very troublesome; the efficiency of downloading the PCBA program is also influenced; 2) the program downloading probe and the PCBA program downloading hole are aligned manually each time, and the efficiency is low.
In addition, the following solutions also exist in the prior art: and welding and fixing the program downloading probe and the program downloading data wire below the PCBA inserting slot of the test board, and exposing the needle head of the program downloading probe on the upper surface of the PCBA inserting slot of the test board. A clamp capable of being buckled is made for the PCBA, and the position of a program downloading hole of the PCBA is reserved for the clamp. Loading the PCBA board into a clamp base, covering a clamp cover plate, inserting the clamp into a test board socket, and contacting a program downloading hole in the PCBA board after the clamp is inserted into the test board socket with an exposed program downloading probe needle head to download a program; this solution also has the following drawbacks: 1) the program downloading talk and the program downloading data wire are welded into a whole, so that the replacement of the program downloading probe is very troublesome; 2) every PCBA board all will carry out the clamp of apron and lower base point about the anchor clamps, has greatly influenced PCBA board and has changed efficiency. Therefore, the embodiment of the utility model provides an optical communication module PCBA procedure download device has the PCBA board and changes efficiently, and the procedure is downloaded the probe and is changed conveniently, and the procedure is downloaded the probe and is downloaded advantages such as the pore pair is convenient with the PCBA procedure, can effectively solve the problem that exists among the above-mentioned prior art. The scheme is as follows:
an optical communication module PCBA program downloading device, comprising:
the test bench 100 is provided with a support frame;
the motion platform 200 is used for placing the test board 56, is arranged on the test board 100, and is composed of a plurality of layers of sliding tables, including an X-axis linear sliding table 210, a Y-axis linear sliding table 220 and an R-axis rotary sliding table 230;
the pressing assembly 300 is used for installing the probe assembly 400 and is arranged on the supporting frame, and the pressing assembly 300 comprises an installation plate 34 for installing the probe assembly 400 and a lifting piece for driving the probe assembly 400 to move up and down;
referring to the cross-sectional view of the pogo pin provided in fig. 8, the probe assembly 400 includes two pogo pins 26 and a pin mounting plate 47, the pogo pins 26 are composed of a pin shaft 261, a spring 262 and a pin 263, the pogo pins 26 are arranged and constructed to contact with the test board 56 under the driving of the lifter, wherein 2 through holes having a certain angle and not being communicated are formed in the pin mounting plate 47, the pogo pins 26 are disposed in the through holes, so that the distance between the pin heads 263 can be adjusted when the two pogo pins 26 are compressed;
and a conductive member 45, one end of which is connected to the data input end through the program download data line 42, and the other end of which is connected to the pogo pin 26, so as to realize data communication between the program download data line 42 and the pogo pin 26.
The above structure is explained in detail as follows:
referring to the test station component assembly view provided in FIG. 2, in one embodiment of this embodiment, the support frame includes a support post 5, a transverse connection plate 7, a base plate 9, a support post 5 mounting plate 34, and a locking knob 6; set up the screw installation step hole on the bed plate 9, the screw mounting hole that corresponds motion platform 200 base is seted up to one end, and the multirow screw hole is seted up to the other end, and support column 5 mounting panel 34 is installed on bed plate 9. The bottom of bed plate 9 is provided with rubber foot pad 1, plays the effect of buffering, support protection bed plate 9, and its inside is equipped with the screw hole, the erection joint of being convenient for. Specifically, in the embodiment, the first screw 2 is used to connect and fix the rubber foot pad 1 through the stepped hole on the base plate 9, so as to play a role in connecting and fixing the rubber foot pad 1 and the base plate 9; the fixed base plate 9 and the moving platform 200 are connected using the second screws 3.
The support column 5 mounting plate 34 is an intermediate member for connecting the base plate 9 and the support column 5, wherein the support column 5 mounting plate 34 is provided with a screw mounting waist hole, and the displacement adjustment of the support column 5 mounting plate 34 in a larger range can be realized by matching the screw mounting waist hole with a plurality of rows of threaded holes; connecting the fixed base plate 9 and the mounting plate 34 of the support column 5 by using a third screw 4; a threaded column is arranged in the middle of the support column 5 mounting plate 34, and the support column 5 is matched with the threaded column through an internal threaded hole at one end and is mounted above the support column 5 mounting plate 34; one end of the locking knob 6 is provided with threads, the other end is an anti-skid rotating part, and the middle part is a jacking step.
As shown in the cross-sectional view of the transverse connection plate provided in fig. 14, further, both ends of the transverse connection plate 7 are symmetrically distributed and are provided with a middle waist hole, a part mounting hole 703, a half-side through hole 702 and a half-side threaded hole 701, wherein the diameter of the half-side through hole 702 is larger than the diameter of the threaded end of the locking knob 6 and smaller than the diameter of the tight step of the locking knob 6; the half-side threaded hole 701 can be matched with the threaded end of the locking knob 6; the locking knob 6 can be tightly screwed with the half-side through hole 702 and the half-side threaded hole 701 at the two ends of the transverse connecting plate 7 to clamp and fix the support column 5 and the cylindrical chuck 36 in the part mounting hole 703 at the two ends of the transverse mounting plate 34.
Referring to the schematic structural diagram of the stitching assembly provided in fig. 16 and the assembly diagram of the parts of the stitching assembly provided in fig. 5, in an embodiment of the present embodiment, the stitching assembly further includes a guide rail 33 and a slider 31, the guide rail 33 is mounted on the mounting plate 34, the slider 31 is slidably connected to the guide rail 33, and the probe mounting plate 47 is disposed on the slider 31. Specifically, the front surface of the sliding block 31 is provided with a threaded hole, the middle of the back surface is hollow, and two sides of the back surface are provided with inward triangular bosses; the front surface of the guide rail 33 is provided with a step through hole, and two sides of the guide rail 33 are provided with triangular grooves which are used for being matched with the triangular bosses of the sliding block 31 to realize the directional sliding of the sliding block 31. In addition, a vertical connecting plate 37 is included, and the vertical connecting plate 37 is an intermediate member for connecting the cylindrical clip 36 and the mounting plate 34. The present embodiment uses a fifth screw 29 for connecting the fixed slider connecting plate 28 and the slider 31; a sixth screw 32 is used for connecting the fixed rail 33 and the mounting plate 34; a seventh screw 35 is used for connecting the fixed cylindrical chuck 36 and the vertical connecting plate 37.
The lifting piece comprises a handle 38, a crescent plate 40 and a connecting rod 48, one end of the handle 38 is of a tilting structure and is convenient to pull, threaded holes are formed in two sides of the other end and are connected to the mounting plate 34, and a slotted hole is formed in the middle of the threaded holes in the two sides. The middle slotted hole of the handle 38 is used for installing a crescent plate 40; the crescent plate 40 is connected with the handle 38 at one end and connected with a connecting rod 48 at the other end, and the connecting rod 48 is connected to the probe mounting plate 47. The crescent 40 is an intermediate piece that connects the handle 38 and the connecting rod 48. When the handle 38 is pulled, the handle 38 drives the crescent plate 40, and thus the connecting rod 48, and thus the slider connecting plate 28 and the probe mounting plate 47 to move up and down. Further, be provided with L type limiting plate 43 on the mounting panel 34, handle 38 the other end is connected with L type limiting plate 43's long end, first via hole has been seted up on L type limiting plate 43's the short end, connecting rod 48 runs through first via hole setting. In this embodiment, the short end of the L-shaped limiting plate 43 is triangular, a cylinder is arranged below the L-shaped limiting plate, and a through hole is formed in the middle of the cylinder. The connecting rod 48 that this embodiment adopted is the screw rod, and the top of probe mounting panel 47 is provided with stop nut 30, and connecting screw rod is connected to stop nut 30, and the screw-thread fit on stop nut 30 and the connecting screw rod realizes the stroke range restriction of slider connecting plate 28. In the present embodiment, an eighth screw 39 is used for connecting the handle 38, the crescent plate 40, the connecting screw and the limiting plate 43; a ninth screw 41 is used for connecting the fixed mounting plate 34 and the vertical connecting plate 37; a tenth screw 44 is used for connecting the fixed stopper plate 43 and the mounting plate 34.
Referring to the schematic structural diagram of the probe assembly provided in fig. 15, the cross-sectional diagram of the probe mounting plate provided in fig. 10, and the schematic structural diagram of the conductive member provided in fig. 13, in an embodiment of the present invention, the probe mounting plate 47 is made of a non-conductive material, such as bakelite. The present embodiment uses the fourth screw 27 for accomplishing the locking of the pogo pin 26 mounted therein in cooperation with the screw holes at both sides of the pin mounting plate 47. Further, the conductive member 45 adopted in this embodiment is T-shaped, and the T-shaped conductive member 45 is provided with a threaded hole and a through hole, one end of the through hole is used for connecting the program downloading data line 42, and the other end of the through hole is used for connecting the pogo pin 26. The present embodiment uses the eleventh screw 46 for connecting the fixed probe mounting plate 47 and the slider connecting plate 28; a twelfth screw 49 is used for connecting and fixing the T-shaped conductive piece 45 and the probe mounting plate 47 respectively; t-shaped conductive member 45 and program download data line 42; t-shaped conductive member 45 and a program download probe.
Referring to the part assembly drawing of the test board provided in fig. 6, the schematic structure drawing of the test board provided in fig. 7, the schematic structure drawing of the PCBA board provided in fig. 9, the schematic structure drawing of the PCBA cassette provided in fig. 11, and the schematic structure drawing of the PCBA guide rail provided in fig. 12, in an embodiment of this embodiment, a limit guide rail 55, a gold finger socket, and a PCBA cassette are provided on the test board 56, the bottom of the limit guide rail 55 is connected with the test board 56, the PCBA cassette is slidably connected to the limit guide rail 55, wherein a limit boss matching a semicircular hole 532 of the PCBA board, a support boss for avoiding components on the PCBA, and a tail push handle convenient to operate are provided on the PCBA cassette, and the gold finger socket abuts against one side of the PCBA cassette far from the tail push handle. Furthermore, the limit guide rail 55 is provided with a limit groove and a limit step for limiting the movement path and the movement position of the PCBA cassette. In addition, the test board mounting plate 50 and the studs 58 are also included, and the studs 58 are used for connecting and supporting the test board 56 and the test board mounting plate 50; the present embodiment uses a thirteenth stud 58 for connecting the fixed curb rail 55 to the test plate 56; fourteenth screw 52 is used to attach fixed test plate 56 to stud 58; the test board mounting plate 50 is coupled and fixed to the moving platform 200 using the fifteenth screw 57.
Referring to the part assembly drawing of the X-axis linear sliding table and the Y-axis linear sliding table provided in fig. 3, in an implementation manner of this embodiment, the X-axis linear sliding table 210 includes a first base 11, a transmission slider 3114, a cover plate 15, a first screw 10 and a first bearing 13, a second via hole is provided at the top of the first base 11 along the X-axis direction, the first bearing 13 is disposed in the second via hole, the outer diameter of the first bearing 13 is in interference fit with the second via hole, the inner diameter is in interference fit with the shaft diameters at two ends of the threaded screw of the first screw 10, one end of the threaded screw of the first screw 10 penetrates through the first bearing 13 and extends into the X-axis linear sliding table 210, the transmission slider 3114 is in threaded fit with the threaded screw of the first screw 10, and the top of the transmission slider 3114 is fixedly connected with the cover plate 15. In use, the left and right movement of the transmission slider 3114 is achieved by rotating the anti-slip adjustment end of the first screw 10. The connection side of the cover plate 15 and the first base 11 is marked with a size scale for judging the moving distance of the cover plate 15 with the alignment. In addition, a countersunk screw 16, a locking screw, a spring 262 spacer 18 and a pan head screw 19 are included, wherein the countersunk screw 16 is used for connecting the cover plate 15 and the transmission slider 3114, and drives the cover plate 15 to move when the transmission slider 3114 moves under the rotation of the first screw 10. The locking screw is used for matching the locking sheet 12 and the cover plate 15 to realize the stop of the cover plate 15. The locking sheet 12 is disposed on one side of the X-axis linear sliding table 210, the bottom of the locking sheet is fixedly connected with the first base 11, and the top of the locking sheet is detachably connected with the cover plate 15. In particular, the spring 262 washer 18 is used to cooperate with the locking tab 12 and locking screw to provide a more secure lock. The pan head screw 19 is used for cooperating with the locking plate 12 and the first base 11 to fix the locking plate 12.
The Y-axis linear sliding table 220 has the same structure as the X-axis linear sliding table 210. When the Y-axis linear sliding table 220 is connected with the X-axis linear sliding table 210, one of the Y-axis linear sliding tables is rotated by 90 °, and then displacement adjustment in the X-axis and Y-axis directions can be respectively realized.
Referring to a part assembly drawing of the R-axis rotating sliding table provided in fig. 4, in an implementation manner of this embodiment, the R-axis rotating sliding table 230 includes a second base 20, a disc 23, a second bearing 22, a second screw 25, and a third bearing 24, where the disc 23 is formed by a three-layer structure, and sequentially includes an upper layer, a middle layer, and a lower layer from top to bottom, a groove is formed at the top of the second base 20 corresponding to the middle layer, the second bearing 22 is disposed in the groove, the lower layer is rotationally matched with the second bearing 22, and the lower edge of the middle layer is a conical gear tooth;
a third through hole is formed in the side wall of the second base 20 along the X-axis direction, the third bearing 24 is arranged in the third through hole, one end of the threaded screw rod of the second screw rod 25 penetrates through the third bearing 24 and extends into the groove, and the threaded screw rod of the second screw rod 25 is meshed with the conical gear teeth.
Specifically, when the anti-skid adjusting end of the second screw 25 is rotated, the disc 23 is driven to move circumferentially by the meshing of the gear end of the second screw 25, so that circumferential angle adjustment is realized. In addition, a second locking screw 21 is included for the corresponding threaded hole in the second base 20 to cooperate to effect the stop of the disc 23. One side of the second base 20 is also marked with a size scale for indicating the rotation angle.
To sum up, the utility model discloses technical scheme has following advantage and beneficial effect at least:
1) the program downloading efficiency is high, and after the device is assembled and debugged for the first time, the PCBA program can be downloaded only by putting the PCBA board into the PCBA clamping seat, pushing the PCBA board into the limiting guide rail, pulling down the handle and executing a program downloading command. The whole process is simple and quick, the efficiency is high, and the problem of low program downloading efficiency of the PCBA of the optical communication module is solved;
2) the program downloading probe is convenient to replace, and can be taken out of the probe mounting plate for replacement only by loosening the screw for clamping and fixing the program downloading probe after the program downloading probe fails, so that the problem of troublesome replacement after the program downloading probe fails is solved;
3) the program downloading probe and the PCBA program downloading hole are convenient to align, and the accurate alignment of the program downloading probe and the PCBA program downloading hole is realized by adjusting the support frame and the motion platform, so that the alignment problem of the program downloading probe and the PCBA program downloading hole is solved;
4) the program downloading is reliable, the contact height between the golden finger part of the PCBA board and the golden finger saddle is high and reliable by limiting the movement path and the movement position of the PCBA cassette provided with the PCBA board, and the problem that the contact of the golden finger part of the PCBA board is unreliable in the program downloading process is solved;
5) the compatibility is good, and the external dimension of the PCBA board is basically kept consistent due to the establishment of the international optical communication module standard, so that the device can be compatible with more program downloads of PCBA boards of the same type; even though the difference of the overall dimension of the PCBA board is large, the PCBA program can be downloaded only by replacing the PCBA clamping seat and the limiting guide rail.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.