Second positioning tool, positioning clamping method and roller bed frame machining method

Abstract

The application discloses a second positioning tool and a positioning and clamping method. The second positioning tool comprises a second workbench, a first channel steel positioning mechanism, a web auxiliary supporting mechanism, a channel steel pneumatic pressing plate, a large plate auxiliary supporting mechanism, a large plate fixing mechanism, a supporting leg positioning mechanism and a supporting leg pneumatic pressing plate. The two sides of the second workbench along the length direction are provided with the channel steel pneumatic pressing plates. The first channel steel positioning mechanism and the web auxiliary supporting mechanism are arranged between the channel steel pneumatic pressing plates. The large plate auxiliary supporting mechanism, the large plate fixing mechanism, the supporting leg positioning mechanism and the supporting leg pneumatic pressing plate are arranged along one side of the second workbench in the width direction. The second positioning tool is flexible and rigidly locked to realize positioning and clamping. In fact, during milling, the transmission side piece is not an absolute rigid body, so that the transmission side piece is elastically deformed or vibrated extremely slightly under the cutting force of the milling cutter head.

Description

Technical Field

[0001] This invention relates to the field of glass deep processing technology, and in particular to a second positioning fixture and a positioning clamping method. Background Technology

[0002] The glass deep processing line roller conveyor is a key piece of equipment that automatically conveys, positions, corrects, and starts / stops glass, connecting all the process equipment in the production line to realize the deep processing of glass.

[0003] Inline roller conveyors are typically composed of multiple connected roller conveyor units, each consisting of a roller conveyor frame, conveyor rollers, a drive motor, and a gear transmission system. With the development of the glass manufacturing industry, the requirements for the smoothness and precision of inline roller conveyor transport are becoming increasingly stringent, with conveyor roller surface runout accuracy ≤0.2mm.

[0004] The main performance indicators of the connecting roller conveyor frame, which serves as the foundation for laying the conveyor rollers, are as follows: flatness of the mounting surface of the large plate on the drive side ≤ 0.15mm, flatness of the mounting surface of the channel steel on the non-drive side ≤ 0.1mm, parallelism between the mounting surface of the large plate on the drive side and the mounting surface of the non-drive side ≤ 0.15mm, height difference between the mounting surface of the large plate on the drive side and the mounting surface of the non-drive side ≤ 0.2mm, parallel alignment of the bearing mounting holes on the drive side and the bearing mounting holes on the non-drive side with a diagonal difference ≤ 1mm, and perpendicularity of the motor mounting plate on the drive side and the mounting surface of the large plate on the drive side ≤ 0.2mm. The technical indicators of the connecting roller conveyor frame directly affect the runout accuracy of the main conveyor roller surface.

[0005] The existing manufacturing process for roller conveyor frames is as follows:

[0006] Step 1. Prepare materials, including channel steel components, support leg components, motor mounting plate, set screw plate, transmission side plate, reinforcing rib plate, fixed-length rectangular tube and square tube body; Step 2. Weld the transmission side large plate assembly, including the channel steel assembly, the transmission side large plate, and the reinforcing rib plate; Step 3. Weld the transmission side panel components, including the transmission side plate assembly, support leg assembly, rectangular tube, motor mounting plate, and set screw plate; Step 4. Weld the non-drive side panels, including the channel steel assembly, the support leg assembly, and the rectangular tube; Step 5. Assemble and weld the transmission side plate, the non-transmission side plate, and the square tube body; Step 6. CNC gantry milling: large plate surface on the transmission side, bearing mounting holes on the large plate surface, channel steel mounting surface on the non-transmission side, bearing mounting holes on the channel steel surface, and motor mounting plate surface.

[0007] The problems with conventional methods are: the large plate surface on the transmission side of vertical milling is suspended below, resulting in severe tool vibration and the flatness of the machined surface not meeting the technical requirements.

[0008] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0009] The technical problem to be solved by this invention is to solve the problem that the flatness of the large plate on the transmission side of vertical milling does not meet the technical requirements after machining.

[0010] The present invention solves the above-mentioned technical problems through the following technical means: The present invention claims protection for a second positioning fixture configured to clamp a transmission side plate, the transmission side plate including a transmission side plate, a first channel steel assembly and a first leg assembly, the first channel steel assembly including a first web plate, and the second positioning fixture including a second worktable, a first channel steel positioning mechanism, a web plate auxiliary support mechanism, a channel steel pneumatic pressure plate, a large plate auxiliary support mechanism, a large plate fixing mechanism, a leg positioning mechanism and a leg pneumatic pressure plate; Pneumatic pressure plates for channel steel are placed on both sides of the second workbench along its length. A first channel steel positioning mechanism and a web plate auxiliary support mechanism are arranged between the channel steel pneumatic pressure plates. The web plate auxiliary support mechanism, along one side of the second workbench's width direction, includes a large plate auxiliary support mechanism, a large plate fixing mechanism, a leg positioning mechanism, and a leg pneumatic pressure plate. The opening side of the first channel steel assembly faces downward. The first channel steel positioning mechanism is configured to initially support and position the first channel steel assembly. The web plate auxiliary support mechanism is configured to support the first web plate. The leg positioning mechanism is configured to support and position the first leg assembly. The channel steel pneumatic pressure plate is configured to clamp and fix the first channel steel assembly. The leg pneumatic pressure plate is configured to clamp and fix the first leg assembly. The large plate auxiliary support mechanism is configured to clamp and fix the large plate on the transmission side. The large plate fixing mechanism is configured to clamp and fix the large plate on the transmission side. The output ends of both the web plate auxiliary support mechanism and the large plate auxiliary support mechanism are configured to cooperate with flexible clamping and rigid locking to perform support operations.

[0011] The second positioning fixture uses a combination of flexible clamping and rigid locking to position and clamp the parts. In fact, during the milling process, since the transmission side plate itself is not an absolutely rigid body, the transmission side plate will undergo extremely small elastic deformation or vibration under the cutting force of the milling cutter head.

[0012] In this way, once high-frequency vibration occurs between the milling cutter and the transmission side plate, it leaves obvious vibration marks on the machined surface, causing a sharp decrease in surface finish and flatness, which will result in the phenomenon of milling cutter vibration.

[0013] The transmission side plate retracts due to insufficient support; when the milling cutter leaves, the transmission side plate springs back, which leads to uneven actual cutting amount and the machined surface does not meet the required flatness, resulting in tool deflection.

[0014] However, in this embodiment, the web plate auxiliary support mechanism and the large plate auxiliary support mechanism allow the blade to actively and elastically extend before milling, closely fitting the contact position of the transmission side plate, and then mechanically locking it to form a rigid lock. This greatly increases the local rigidity of the transmission side plate, thereby eliminating tool vibration and tool deflection.

[0015] Preferably, the large plate auxiliary support mechanism includes a fifth bracket, a large plate auxiliary support cylinder, and a large plate auxiliary unit. The fifth bracket is set on the second workbench, and the large plate auxiliary support cylinder is set on the fifth bracket. The piston rod of the large plate auxiliary support cylinder is connected to the large plate auxiliary unit. The large plate auxiliary support cylinder is configured to drive the large plate auxiliary unit to move horizontally. The large plate auxiliary unit is configured to flexibly slide and extend horizontally relative to the fixed end of the large plate auxiliary unit, and to rigidly lock vertically relative to the fixed end of the large plate auxiliary unit.

[0016] Preferably, the large plate auxiliary unit includes a fixed pressure plate, a floating pin spring, a first clamping plate, a second floating block, a pressure plate spring, a floating pressure plate, a second clamping plate, a pressure plate guide pin, and a second locking screw. The piston rod of the auxiliary support cylinder of the large plate is connected to the fixed pressure plate. An opening groove is opened on the surface of the fixed pressure plate. A second float is connected to the opening groove by a floating pin spring. The second float partially slides in the opening groove. The top of the opening groove is defined as the first opening. The end of the opening groove passes through to form the second opening. The side wall of the second float protrudes from the first opening, and the end of the second float protrudes from the second opening. A pressure hole is vertically formed on the top surface of the fixed pressure plate, and a pressure plate spring is connected inside the pressure hole. A first clamping plate is set on the bottom surface of the fixed pressure plate, and a floating pressure plate and a second clamping plate are sequentially set on the top of the fixed pressure plate. The pressure plate guide pin passes through the second clamping plate and the floating pressure plate in sequence, and the pressure plate guide pin and the pressure hole form a sliding guide engagement. The second locking screw passes through the second clamping plate and the floating pressure plate in sequence, and the second locking screw is screwed into the fixed pressure plate. The fixed pressure plate, the first clamping plate, the floating pressure plate and the second locking screw together constitute the fixed end of the large plate auxiliary unit, and the second floating block constitutes the output end of the large plate auxiliary unit.

[0017] In the case of flexible sliding and telescopic resistance, the second float slides elastically in the opening groove due to the elastic action of the floating pin spring. In the case of rigid locking, the pressure plate guide pin is used to guide, so that the second clamping plate presses against the floating pressure plate and is locked by the second locking screw to achieve fixation.

[0018] Preferably, the web plate auxiliary support mechanism includes a first sleeve base, a first floating block, a first spring, and a first locking screw; the first sleeve base is provided on the second workbench, the first floating block is connected to the first sleeve base cavity through the first spring, the first locking screw is screwed into the side of the first sleeve base, and the first locking screw extending into the first sleeve base abuts against the first floating block.

[0019] By incorporating a first spring, a first sleeve base, and a first floating block, the first spring extends actively before milling, allowing the first floating block to closely engage with the contact position of the transmission side plate and then mechanically lock, forming a rigid lock. This significantly increases the local rigidity of the transmission side plate, thereby eliminating tool vibration and deflection.

[0020] Preferably, the large plate fixing mechanism includes a large plate pressing cylinder, a large plate pressing block support cylinder, and a seventh bracket. The seventh bracket is provided on the second worktable surface, and the large plate pressing block support cylinder is provided on the top of the seventh bracket. The piston rod of the large plate pressing block support cylinder is connected to the large plate pressing cylinder. The large plate pressing block support cylinder is configured to drive the large plate pressing cylinder to move horizontally, and the piston rod of the large plate pressing cylinder is configured to move vertically.

[0021] The piston rod of the large plate pressing block support cylinder drives the large plate pressing cylinder to move to the top of the large plate on the transmission side, activating the large plate pressing cylinder and the support leg pad. The support leg pad is set on the second worktable, and a lateral limit block is set on one side of the support leg pad along the length direction of the second worktable.

[0022] The outrigger pad supports the first outrigger assembly, and the lateral limiting block abuts against the side of the first outrigger assembly to limit its movement.

[0023] The present invention also claims protection for a positioning and clamping method using a second positioning fixture, comprising the following steps; The first channel steel positioning mechanism initially supports and positions the first channel steel component. The web plate auxiliary support mechanism uses a combination of flexible clamping and rigid locking to support the first web plate. The outrigger positioning mechanism supports and positions the first outrigger assembly. The first channel steel assembly is clamped and fixed by a pneumatic pressure plate. The first outrigger assembly is clamped and fixed by a pneumatic pressure plate. The large plate auxiliary support mechanism clamps the large plate on the transmission side; The large plate fixing mechanism clamps and fixes the large plate on the transmission side.

[0024] Preferably, the large plate auxiliary support mechanism for clamping the transmission side large plate specifically includes the following steps; When the large plate auxiliary support cylinder is activated, the piston rod of the large plate auxiliary support cylinder extends, driving the output end of the large plate auxiliary unit to flexibly slide and extend horizontally relative to the fixed end of the large plate auxiliary unit until it contacts the side of the transmission side large plate. Then, the output end of the large plate auxiliary unit is rigidly locked vertically relative to the fixed end of the large plate auxiliary unit, pressing against the side of the transmission side large plate.

[0025] Preferably, after the output end of the large plate auxiliary unit slides and extends horizontally to contact the side of the transmission side large plate, the output end of the large plate auxiliary unit is rigidly locked vertically against the side of the transmission side large plate relative to the fixed end of the large plate auxiliary unit. This specifically includes the following steps. Activate the auxiliary support cylinder of the large plate. The piston rod of the auxiliary support cylinder extends, driving the fixed pressure plate closer to the side of the transmission side plate. The second float contacts the transmission side plate, and the floating pin spring is flexibly compressed, causing the second float to move backward. Tighten the second locking screw, and the floating pressure plate slides along the guide engagement between the pressure plate guide pin and the pressure hole until the floating pressure plate presses the second float, which is then rigidly locked and pressed against the side of the transmission side plate.

[0026] In this positioning and clamping method, under the condition of flexible sliding and telescopic contact, the second float slides elastically in the opening groove due to the elastic action of the floating pin spring. Under the condition of rigid locking, the pressure plate guide pin is used to guide, so that the second clamping plate presses against the floating pressure plate and is locked by the second locking screw to achieve fixation.

[0027] This invention claims protection for a roller conveyor frame processing method employing a positioning and clamping method, comprising the following steps; The first positioning fixture positions and clamps the transmission side plate, the first channel steel assembly, and the reinforcing rib plate to control the welding deformation, and then welds them together to form the transmission side plate assembly. The transmission side plate assembly, the first leg assembly, the motor mounting plate, the set screw plate, and the first fixed-length rectangular tube are assembled and welded together to form the transmission side plate. The second channel steel assembly, the second leg assembly, and the second fixed-length rectangular tube are welded together to form a non-transmission side plate. The second positioning fixture uses a combination of flexible clamping and rigid locking to position and clamp the transmission side plate, and mills the mounting surface of the transmission side plate. Milling the mounting surface of the non-transmission side plate; The first positioning fixture clamps the transmission side plate, the square tube body, and the non-transmission side plate, and welds them together to form a roller frame. Drill the first bearing housing mounting hole on the mounting surface of the transmission side plate, and drill the second bearing housing mounting hole on the mounting surface of the non-transmission side plate. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the roller conveyor frame in the first three-dimensional coordinate system in an embodiment of the present invention; Figure 2 This is a front view of the roller conveyor frame in an embodiment of the present invention; Figure 3 This is a partial three-dimensional schematic diagram of the first channel steel component in an embodiment of the present invention; Figure 4 This is a schematic diagram of the positioning structure of the first positioning fixture in the second three-dimensional coordinate system in an embodiment of the present invention; Figure 5 This is a top view of the positioning of the first positioning fixture in an embodiment of the present invention; Figure 6 This is a schematic diagram of the large plate pressing mechanism in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the first component pressing mechanism in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the first channel steel web clamping mechanism in an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the first lateral clamping mechanism in an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the transmission side plate, the first channel steel assembly, and the reinforcing rib plate positioned by the first positioning fixture in the second three-dimensional coordinate system in this embodiment of the invention. Figure 11 This is a schematic diagram of the transmission side plate assembly in an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of the second positioning fixture in the third three-dimensional coordinate system in an embodiment of the present invention; Figure 13 This is a top view of the second positioning fixture in an embodiment of the present invention; Figure 14 This is a three-dimensional structural schematic diagram of the web plate auxiliary support mechanism in an embodiment of the present invention; Figure 15 This is a front view of the web plate auxiliary support mechanism in an embodiment of the present invention; Figure 16 yes Figure 15 A schematic diagram of the cross-section structure from the AA perspective; Figure 17 This is a three-dimensional structural schematic diagram of the large plate auxiliary support mechanism in an embodiment of the present invention; Figure 18 This is a top view of the large-plate auxiliary unit in an embodiment of the present invention; Figure 19 yes Figure 18 A cross-sectional structural diagram from a BB perspective; Figure 20 yes Figure 18 A cross-sectional view of the structure from a CC perspective; Figure 21 This is a schematic diagram of the second floating block being locked in the large plate auxiliary unit in an embodiment of the present invention; Figure 22 This is a schematic diagram of the large plate pressing cylinder, the large plate pressing block supporting cylinder, and the seventh bracket in an embodiment of the present invention; Figure 23 This is a schematic diagram of the positioning transmission side plate in the third three-dimensional coordinate system in an embodiment of the present invention; Figure 24This is a schematic diagram of the transmission side plate in an embodiment of the present invention; Figure 25 This is an overall schematic diagram of the first positioning fixture in the second three-dimensional coordinate system in an embodiment of the present invention; Figure 26 This is an overall top view of the first positioning fixture in the second three-dimensional coordinate system in this embodiment of the invention; Figure 27 This is a three-dimensional structural schematic diagram of the leg clamping mechanism in an embodiment of the present invention; Figure 28 This is a three-dimensional structural diagram of the third-party tube limiting block in an embodiment of the present invention; Figure 29 This is a schematic diagram of the positioning transmission side plate and non-transmission side plate in the second three-dimensional coordinate system in an embodiment of the present invention; Figure 30 This is a schematic diagram of drilling the first bearing housing mounting hole and the second bearing housing mounting hole in an embodiment of the present invention; Figure 31 This is a schematic diagram of the roller conveyor frame processing method in an embodiment of the present invention.

[0029] 10. Transmission side plate; 10c. First mounting surface; 10d. First bearing housing mounting hole; 11. First channel steel assembly; 110. First web plate; 111. First flange plate; 12. Reinforcing rib plate; 13. First support leg assembly; 14. Motor mounting plate; 16. First fixed-length rectangular tube; 17. Second channel steel assembly; 17c. Second mounting surface; 17d. Second bearing seat mounting hole; 18. Second support leg assembly; 19. Second fixed-length rectangular tube; 19a. Square tube body; 20. First workbench; 21. Fixture pad; 22. First side fitting limit block; 23. Large plate limit block; 24. First channel steel limit block; 25. Large plate clamping mechanism; 250. First bracket; 251. Large plate clamping cylinder; 252. Clamping block body; 26. First component clamping mechanism; 260. Second bracket; 261. First component clamping cylinder; 27. First channel steel web clamping mechanism; 270. Third bracket; 271. Third cylinder; 272. First pin; 273. Third clamping arm; 274. Second pin; 275. Third support rod; 276. Third pin; 28. First lateral clamping mechanism; 280. Fourth bracket; 281. Lateral clamping cylinder; 282. First OK clamp; 29. Second side fitting limiting block; 30. Second channel steel limiting block; 31. Leg clamping mechanism; 310. Sixth bracket; 311. Leg clamping cylinder; 312. Fourth pin; 313. Fourth clamping arm; 314. Fifth pin; 315. Fourth support rod; 316. Sixth pin; 32. Second component clamping mechanism; 33. Second channel steel web clamping cylinder; 34. Second lateral clamping mechanism; 35. First square tube limiting block; 36. Second square tube limiting block; 37. Third square tube limiting block; 40. Second workbench; 41. First channel steel web plate pad; 42. Second channel steel web plate pad; 43. Support leg pad; 44. Lateral limiting block; 45. First channel steel positioning block; 46. ​​Web plate auxiliary support mechanism; 460. First sleeve base; 461. First floating block; 462. First spring; 463. First locking screw; 47. Channel steel pneumatic pressure plate; 48. Support leg pneumatic pressure plate; 49. Large plate auxiliary support mechanism; 490. Fifth bracket; 491. Large plate auxiliary support cylinder; 4920, Fixed pressure plate; 49201, Opening slot; 49201e, First slot; 49201f, Second slot; 49202, Pressing hole; 4921. Floating pin spring; 4922. First clamping plate; 4923. Second float; 4924. Pressure plate spring; 4925. Floating pressure plate; 4926. Second clamping plate; 4927. Pressure plate guide pin; 4298. Second locking screw; 50. Large plate pressing cylinder; 51. Large plate pressing block support cylinder; 52. Seventh bracket. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] See Figures 1-3 It should be noted in advance that the roller conveyor frame is the core support structure of the roller conveyor system, used to install and fix components such as rollers and drive devices.

[0032] Overall, the shape of the roller conveyor frame is similar to a horizontally placed "ladder" frame structure. With the center of the roller conveyor frame as the origin O, the length direction of the roller conveyor frame is the X-axis, the width direction of the roller conveyor frame is the Y-axis, and the height direction of the roller conveyor frame is the Z-axis, a first three-dimensional coordinate system is established.

[0033] Therefore, the side of the roller conveyor frame along the X-axis is the transmission side, and the drive motor and gear transmission system used for transmission are both installed on the transmission side.

[0034] The other side of the roller conveyor frame along the X-axis is the non-drive side, which mainly serves as a support and guide.

[0035] The transmission side and the non-transmission side are welded together by several square tube bodies 19a. The square tube bodies 19a are parallel to the Y-axis, and finally form a "ladder-shaped" frame. The conveyor rollers are mounted on both sides of the roller frame.

[0036] Specifically, the roller conveyor frame is welded together from at least the transmission side plate 10, the first channel steel assembly 11, the reinforcing rib plate 12, the first support leg assembly 13, the motor mounting plate 14, the top screw plate, the first fixed-length rectangular tube 16, the second channel steel assembly 17, the second support leg assembly 18, the second fixed-length rectangular tube 19, and the square tube body 19a.

[0037] First, regarding the transmission side; The transmission side plate 10 is arranged along the X-axis and is located at the core of the transmission side. It serves as the reference and mounting platform for the entire transmission side. The top surface of the transmission side plate 10 has a first bearing seat mounting hole 10d, which is used to install the first bearing seat (not shown in the figure). The first bearing seat is used to install the first bearing at one end of the conveyor roller (not shown in the figure).

[0038] The first channel steel assembly 11 is arranged along the Z-axis and welded to the underside of the transmission side plate 10.

[0039] A reinforcing rib 12 is welded between the first channel steel assembly 11 and the transmission side plate 10 to enhance their rigidity, thereby jointly forming the transmission side plate assembly.

[0040] The first leg assembly 13 is arranged along the Z-axis and welded to the bottom of the first channel steel assembly 11 to support the roller conveyor frame.

[0041] The motor mounting plate 14 is welded onto the first leg assembly 13. Its mounting surface needs to be cut to ensure that it is perpendicular to the surface of the transmission side plate 10, and is used to mount the motor.

[0042] The set screw plate consists of four small parts on the motor mounting plate 14. After the conveyor roller is installed, it is used to adjust the Z-axis position of the motor to ensure the tension of the synchronous belt connecting the motor and the conveyor roller.

[0043] The first fixed-length rectangular tube 16 is arranged along the X-axis and is used to connect the first support leg assembly 13.

[0044] The above transmission side components are welded together to form the transmission side plate.

[0045] Secondly, regarding the non-transmission side; The second channel steel assembly 17 is arranged along the Z-axis and serves as the main structure on the non-transmission side. The top surface of the second channel steel assembly 17 has a second bearing housing mounting hole 17d, which is used to install the second bearing housing (not shown in the figure). The bearing housing is used to install the second bearing (not shown in the figure) at the other end of the conveyor roller.

[0046] The second leg assembly 18, arranged along the Z-axis, is welded to the bottom of the second channel steel assembly 17 and is used to support the roller conveyor frame.

[0047] The second fixed-length rectangular tube 19 is arranged along the X-axis and is used to connect the second support leg assembly 18.

[0048] The above non-drive side panels are welded together to form the non-drive side pieces.

[0049] Then, regarding the square tube body 19a; The square tube body 19a, arranged along the Y-axis, is used to connect the transmission side plate and the non-transmission side plate, and is welded between the two side plates.

[0050] It should be noted in advance that, taking the roller conveyor frame after welding at this moment as the reference, the top surface of the transmission side large plate assembly is defined as the first mounting surface 10c, and the top surface of the second channel steel assembly 17 is defined as the second mounting surface 17c.

[0051] The following process requirements must be ensured during the processing: The flatness of the first mounting surface 10c is ≤0.15mm.

[0052] The flatness of the second mounting surface 17c is ≤0.1mm.

[0053] The height difference between the first mounting surface 10c and the second mounting surface 17c is ≤0.2mm.

[0054] The parallelism between the first mounting surface 10c and the second mounting surface 17c is ≤0.15mm.

[0055] The first bearing housing mounting hole 10d and the second bearing housing mounting hole 17d are parallel and aligned, with a diagonal difference of ≤1mm.

[0056] The perpendicularity between the first mounting surface 10c and the motor mounting plate 14 is ≤0.2mm.

[0057] It is worth mentioning that the diagonal difference ≤1mm refers to the difference between the line connecting the foremost first bearing housing mounting hole 10d and the rearmost second bearing housing mounting hole 17d along the X-axis and the line connecting the foremost second bearing housing mounting hole 17d and the rearmost first bearing housing mounting hole 10d, which is ≤1mm. All the above component placement orientations are described based on the first three-dimensional coordinate system.

[0058] See Figure 31 The roller conveyor frame processing method in this embodiment specifically includes: See Figures 4 to 11 S1. Prepare the welding materials; the welding materials include the transmission side plate 10, the first channel steel assembly 11, the reinforcing rib plate 12, the first support leg assembly 13, the motor mounting plate 14, the set screw plate, the first fixed-length rectangular tube 16, the second channel steel assembly 17, the second support leg assembly 18, the second fixed-length rectangular tube 19, and the square tube body 19a. A first bearing housing guide hole is opened on the top surface of the transmission side plate 10; S2. The first positioning fixture positions and clamps the transmission side plate 10, the first channel steel assembly 11, and the reinforcing rib plate 12, and then welds them together to form the transmission side plate assembly.

[0059] It should be noted in advance that the first positioning fixture includes a first worktable 20, a clamping pad 21, a first side-fitting limiting block 22, a large plate limiting block 23, a first channel steel limiting block 24, a large plate pressing mechanism 25, a first component pressing mechanism 26, a first channel steel web plate clamping mechanism 27, and a first lateral clamping mechanism 28.

[0060] The first worktable 20 is flat. The upper surface of the first worktable 20 is the reference surface. The center of the first worktable 20 is point O. The length direction of the first worktable 20 is the x-axis, the width direction of the first worktable 20 is the y-axis, and the height direction of the first worktable 20 is the z-axis. A second three-dimensional coordinate system is established.

[0061] The first workbench 20 is provided with a fixture pad 21. The fixture pad 21 is located on one side of the x-axis, and the long side of the fixture pad 21 is parallel to the x-axis.

[0062] The first workbench 20 is equipped with a first side-fitting limiting block 22, a large plate limiting block 23, and a first channel steel limiting block 24, all of which are limiting blocks. The first channel steel limiting block 24 has an inverted "L" shape, therefore, the top side of the first channel steel limiting block 24 protrudes beyond the large plate limiting block 23, thus allowing them to be combined for positioning the transmission-side large plate 10 and the first channel steel assembly 11; specifically... Three large plate limiting blocks 23 are evenly arranged along the x-axis on the first workbench 20. A first side-fitting limiting block 22 is set on the left side of the first workbench 20. The first side-fitting limiting block 22 and the large plate limiting block 23 are not on the same horizontal line.

[0063] Three first channel steel limit blocks 24 are evenly arranged along the x-axis on the first workbench 20.

[0064] Four large plate clamping mechanisms 25 are arranged along the x-axis of the first workbench 20. The large plate clamping mechanism 25 is used to clamp the large plate 10 on the transmission side. Specifically, the large plate clamping mechanism 25 includes a first bracket 250, a large plate clamping cylinder 251 and a pressure block body 252. The first bracket 250 is arranged on the upper surface of the first workbench 20. The longitudinal section of the first bracket 250 is an inverted L-shaped structure. The large plate clamping cylinder 251 is arranged on the crossbeam of the first bracket 250. The piston rod of the large plate clamping cylinder 251 is downward along the z-axis. The pressure block body 252 is arranged at the bottom end of the piston rod of the large plate clamping cylinder 251. The pressure block body 252 is pressed against the top surface of the large plate 10 on the transmission side.

[0065] It is worth mentioning that the first channel steel assembly 11 includes a first web 110 and a first wing 111, with the first wing 111 provided on both sides of the first web 110 to form a U-shaped channel steel structure.

[0066] Two first component clamping mechanisms 26 are arranged along the x-axis on the first worktable 20. The first component clamping mechanism 26 is used to clamp the first wing plate 111. Specifically, the first component clamping mechanism 26 includes a second bracket 260 and a first component clamping cylinder 261. The first worktable 20 is provided with the second bracket 260, and the first component clamping cylinder 261 is provided on the second bracket 260. The first component clamping cylinder 261 is a rotary clamping cylinder. During the extension and retraction of the piston rod of the rotary clamping cylinder, it can rotate 90° to the right or left and clamp the top of the first wing plate 111 through the clamping arm. This is prior art and will not be described in detail.

[0067] The first workbench 20 is equipped with three first channel steel web clamping mechanisms 27 along the x-axis. The first channel steel web clamping mechanism 27 is used to clamp the first web 110. The first channel steel web clamping mechanism 27 includes a third bracket 270, a third cylinder 271, a first pin 272, a third clamping arm 273, a second pin 274, a third support rod 275, and a third pin 276. The first workbench 20 is equipped with the third bracket 270. The longitudinal section of the third bracket 270 has an "L" shape. The third cylinder 271 is installed on the longitudinal beam of the third bracket 270. The piston rod of the third cylinder 271 is parallel to the y-axis. The piston rod of the third cylinder 271 is connected to the third clamping arm 273 through the first pin 272. The third clamping arm 273 has a hook-shaped structure. The middle part of the third clamping arm 273 is connected to one end of the third support rod 275 through the second pin 274. The other end of the third support rod 275 is connected to the side of the third bracket 270 through the third pin 276.

[0068] It should be noted that the fixed end of the third cylinder 271 can be understood as the outer shell of the third cylinder 271, and the piston rod of the third cylinder 271 is the piston rod of the third cylinder 271. When the piston rod of the third cylinder 271 moves, it drives one end of the third clamping arm 273 to move. Due to the restriction of the third support rod 275, the middle part of the third clamping arm 273 rotates around the second pin 274 until the third clamping arm 273 is stuck on the outside of the first web plate.

[0069] A first lateral clamping mechanism 28 is provided on the right side of the first worktable 20. The first lateral clamping mechanism 28 cooperates with the first side-fitting limiting block 22 to clamp the transmission side plate 10 and the two ends of the first channel steel assembly 11. Specifically, the first lateral clamping mechanism 28 includes a fourth bracket 280 (not shown in the figure), a lateral clamping cylinder 281, and a first OK fixture 282. The fourth bracket 280 is provided on the right side of the first worktable 20, and the lateral clamping cylinder 281 is provided on the fourth bracket 280. The lateral clamping cylinder 281 is provided at the end of the fourth bracket 280 facing the first side-fitting limiting block 22. The piston rod of the lateral clamping cylinder 281 is arranged along the x-axis and connected to the first OK fixture 282. The first OK fixture 282 is a general-purpose fixture for machining, mainly used to clamp workpieces on machine tools for processing or inspection. It is existing technology and will not be described in detail.

[0070] Forming the transmission-side large plate assembly, specifically including: S20. Position the transmission side plate 10; specifically, a fixture pad 21 is arranged on the first worktable 20, the long side of the fixture pad 21 is parallel to the x-axis, and the transmission side plate 10 is placed on the fixture pad 21, so that the end face of the transmission side plate 10 is in contact with the first side contact limiting block 22, and the side of the transmission side plate 10 is in contact with the plate limiting block 23.

[0071] S21. Position the first channel steel assembly 11; specifically, place the first channel steel assembly 11 onto the transmission side plate 10. At this time, the longitudinal section of the first channel steel assembly 11 has a side-mounted "U" shaped structure, the end of the first channel steel assembly 11 is attached to the first side-attached limiting block 22, and the open side of the first channel steel assembly 11 is attached to the first channel steel limiting block 24.

[0072] It is worth mentioning that the opening side of the first channel steel assembly 11 refers to the U-shaped opening side of the first channel steel assembly 11. At this time, the transmission side plate 10 is in contact with the clamping pad 21, and the first channel steel assembly 11 is placed on the upper surface of the transmission side plate 10. The first channel steel assembly 11 and the clamping pad 21 are perpendicular to each other, and the opening side of the first channel steel assembly 11 faces the side.

[0073] S22. The large plate clamping mechanism 25 clamps the large plate 10 on the transmission side; specifically, the large plate clamping cylinder 251 is activated, the piston rod of the large plate clamping cylinder 251 extends, driving the pressure block body 252 to press down and clamp the large plate 10 on the transmission side.

[0074] S23. Clamping the first channel steel assembly 11, the first channel steel assembly 11 including a first web plate 110 and a first wing plate 111; specifically including; S230. The first component clamping mechanism 26 clamps the first wing plate 111; specifically, the first component clamping cylinder 261 is activated, the piston rod of the first component clamping cylinder 261 extends and retracts, and rotates horizontally to clamp the first wing plate 111.

[0075] S231. The first channel steel web clamping mechanism 27 clamps the first web 110; specifically, when the third cylinder 271 is activated, when the piston rod of the third cylinder 271 moves, it drives one end of the third clamping arm 273 to move, and the middle part of the third clamping arm 273 is restricted by the third support rod 275, so that the third clamping arm 273 rotates around the second pin 274 until the third clamping arm 273 is stuck on the outside of the first web.

[0076] S24. The first lateral clamping mechanism 28 presses the transmission side plate 10 and the first channel steel assembly 11; specifically, the lateral clamping cylinder 281 is activated to retract, driving the first OK clamp 282 to press against the right side of the transmission side plate 10 and the first channel steel assembly 11, thereby fixing the transmission side plate 10 and the first channel steel assembly 11.

[0077] S25. Assemble and weld the transmission side plate 10 and the first channel steel assembly 11; S26. The transmission side plate 10, the first channel steel assembly 11 and the reinforcing rib plate 12 are assembled and welded to form the transmission side plate assembly. Specifically, the reinforcing rib plate 12 is placed along the laser marking position and welded.

[0078] Laser marking is mainly used to ensure that the markings are clear and the positions are correct. Marking is done in advance at the corresponding positions. This is an existing technology and will not be elaborated further.

[0079] S27. Remove the transmission side large plate assembly; specifically, after welding is completed, reverse start the side clamping cylinder 281, the piston rod of the side clamping cylinder 281 extends, driving the first OK clamp 282 to loosen; reverse start the large plate pressing cylinder 251 and the third cylinder 271, driving the piston rod of the large plate pressing cylinder 251 and the piston rod of the third cylinder 271 to retract, the first component pressing cylinder 261 rotates 90° in the opposite direction and moves upward, and remove the transmission side large plate assembly.

[0080] It is worth noting that the placement of all components in S2 is described based on the second and third coordinate systems.

[0081] In addition, during the assembly and welding process to form the transmission side large plate assembly, it is required to control the welding deformation of the transmission side large plate 10 to ensure that the flatness of the first mounting surface 10c after subsequent milling is ≤1.5mm.

[0082] S3. The transmission side plate assembly, the first support leg assembly 13, the motor mounting plate 14, the top screw plate and the first fixed-length rectangular tube 16 are welded together to form the transmission side plate. This is existing technology and will not be described in detail here.

[0083] S4. Welding the second channel steel assembly 17, the second support leg assembly 18, and the second fixed-length rectangular tube 19 together to form a non-transmission side plate is existing technology and will not be described in detail here.

[0084] See Figures 12-13 S5. The second positioning fixture clamps the transmission side plate and mills the mounting surface of the transmission side plate; It should be noted in advance that the surface of the second worktable 40 is the reference plane, with the center of the second worktable 40 as the origin o', the length direction of the second worktable 40 as the x' axis, the width direction of the second worktable 40 as the y' axis, and the height direction of the second worktable 40 as the z' axis, to establish a third three-dimensional coordinate system.

[0085] The second positioning fixture includes a second workbench 40, a first channel steel web plate pad 41, a second channel steel web plate pad 42, a support leg pad 43, a lateral limiting block 44, a first channel steel positioning block 45, a channel steel pneumatic pressure plate 47, a support leg pneumatic pressure plate 48, a large plate auxiliary support mechanism 49, a large plate pressure plate cylinder 50, a large plate pressure block support cylinder 51, and a seventh bracket 52.

[0086] The second workbench 40 has a first channel steel web plate pad 41 and a second channel steel web plate pad 42 placed on its surface along the x' axis. Both the first channel steel web plate pad 41 and the second channel steel web plate pad 42 are used to support the first web plate 110.

[0087] Three support leg pads 43 are evenly arranged along the x' axis on the surface of the second workbench 40. The support leg pads 43 are used to support the first support leg assembly 13 and prevent the transmission side plate from tipping over.

[0088] Two first channel steel positioning blocks 45 are evenly arranged on the surface of the second workbench 40 along the x' axis. The first channel steel positioning blocks 45 are used to limit the first wing plate 111.

[0089] A lateral limiting block 44 is provided on the right side of the second workbench 40, which is used to limit the first support leg assembly 13.

[0090] See Figures 14-16Four web plate auxiliary support mechanisms 46 are evenly arranged along the x' axis on the surface of the second workbench 40. The web plate auxiliary support mechanisms 46 are used to provide auxiliary support for the first web plate 110. Specifically, the web plate auxiliary support mechanism 46 includes a first sleeve base 460, a first floating block 461, a first spring 462, and a first locking screw 463. The first sleeve base 460 is provided on the surface of the second workbench 40. The first floating block 461 is connected to the first sleeve base 460 along the z' axis through the first spring 462. The first locking screw 463 is screwed into the side of the first sleeve base 460, and the first locking screw 463 extending into the first sleeve base 460 abuts against the first floating block 461.

[0091] Pneumatic pressure plates 47 made of channel steel are placed on both sides of the second workbench 40 along the x' axis. The pneumatic pressure plate is a clamping device that uses compressed air as a power source. It is existing technology and will not be described in detail. The piston rod of the pneumatic pressure plate 47 moves along the x' axis to clamp and fix the two ends of the first channel steel assembly 11.

[0092] Three pneumatic pressure plates 48 are evenly arranged on the worktable surface along the x' axis, and the pneumatic pressure plates 48 clamp the three first support leg assemblies 13 respectively.

[0093] Four large plate auxiliary support mechanisms 49 are evenly arranged along the x' axis on the surface of the second workbench 40. Each large plate auxiliary support mechanism 49 includes a fifth bracket 490, a large plate auxiliary support cylinder 491, and a large plate auxiliary unit. The fifth bracket 490 is set on the surface of the second workbench 40, and the large plate auxiliary support cylinder 491 is set on the fifth bracket 490. The piston rod of the large plate auxiliary support cylinder 491 moves along the y' axis and is connected to the large plate auxiliary unit.

[0094] See Figures 17-21 The large plate auxiliary unit includes a fixed pressure plate 4920, a floating pin spring 4921, a first clamping plate 4922, a second float 4923, a pressure plate spring 4924, a floating pressure plate 4925, a second clamping plate 4926, a pressure plate guide pin 4927, and a second locking screw 4928. The piston rod of the large plate auxiliary support cylinder 491 is connected to the fixed pressure plate 4920. An opening groove 49201 is opened on the upper surface of the fixed pressure plate 4920. The length direction of the opening groove 49201 is parallel to the y' axis. The opening groove 49201 contains... The second float 4923 is connected by a floating pin spring 4921. The second float 4923 slides partially in the opening slot 49201 along the y' axis. The top opening of the opening slot 49201 is defined as the first opening 49201e. The end of the opening slot 49201 passes through to form the second opening 49201f. The side wall of the second float 4923 protrudes from the first opening 49201e, and the end of the second float 4923 protrudes from the second opening 49201f. The second float 4923 abuts against the side of the transmission side plate 10.

[0095] Two pressure holes 49202 are formed on the top surface of the fixed pressure plate 4920 along the z' axis. The two pressure holes 49202 are located on both sides of the fixed pressure plate 4920. A pressure plate spring 4924 is connected inside the pressure hole 49202. In the normal state, the pressure plate spring 4924 protrudes from the pressure hole 49202. A first clamping plate 4922 is provided on the bottom surface of the fixed pressure plate 4920. A floating pressure plate 4925 and a second clamping plate 4926 are sequentially provided on the top of the fixed pressure plate 4920. A pressure plate guide pin 4927 passes through the second clamping plate 4926 and the floating pressure plate 4925 in sequence. The guide pin 4927 and the pressure hole 49202 form a sliding guide fit. The second locking screw 4928 is located between the two pressure plate guide pins 4927. The second locking screw 4928 passes through the second clamping plate 4926 and the floating pressure plate 4925 in sequence, and the second locking screw 4928 is screwed into the fixed pressure plate 4920. When fully screwed, the pressure plate spring 4924 is compressed, and the floating pressure plate 4925 is pressed against the surface of the fixed pressure plate 4920. At this time, the floating pressure plate 4925 is pressed against the surface of the second float 4923, restricting the sliding of the second float 4923.

[0096] It is worth mentioning that the positions of the pressure hole 49202 and the opening groove 49201 are staggered.

[0097] See Figure 22 Four large plate pressing block support cylinders 51 are evenly arranged on the surface of the second workbench 40 along the x' axis. The large plate pressing block support cylinders 51 are installed on the seventh bracket 52. The piston rod of the large plate pressing block support cylinder 51 moves along the y' axis, and the piston rod of the large plate pressing cylinder 50 is driven along the z' axis to press the top of the large plate 10 on the transmission side.

[0098] See Figures 23-24 The second positioning fixture clamps the transmission side plate, and the milling of the transmission side plate by the milling machine specifically includes the following steps; S50. Positioning transmission side plate, specifically, the hoisting transmission side plate is placed on the second workbench 40, the opening side of the first channel steel assembly 11 faces downward, the first leg assembly 13 is parallel to the y' axis, the first channel steel web plate pad 41 and the second channel steel web plate pad 42 are placed in the first web plate 110, the leg pad 43 supports the first leg assembly 13, the right side of the first leg assembly 13 is attached to the lateral limiting block 44, and the first wing plate 111 is attached to the side of the first channel steel positioning block 45.

[0099] S51. The web plate auxiliary support mechanism 46 provides auxiliary support for the first web plate 110; specifically, due to the flatness error of the first web plate 110, the first web plate 110 contacts the first floating block 461, causing it to descend to different degrees. The first spring 462 flexibly compresses the first floating block 461 to keep its end in contact with and support the first web plate 110, and the first locking screw 463 is tightened to rigidly lock it.

[0100] S52. The channel steel pneumatic pressure plate 47 clamps the first channel steel assembly 11; specifically, the channel steel pneumatic pressure plate 47 is activated to clamp both ends of the first channel steel assembly 11.

[0101] S53. The outrigger pneumatic pressure plate 48 clamps the first outrigger assembly 13; specifically, the outrigger pneumatic pressure plate 48 is activated to clamp the end of the first outrigger assembly 13.

[0102] S54. The large plate auxiliary support mechanism 49 clamps the transmission side large plate 10; specifically, the large plate auxiliary support cylinder 491 is activated, the piston rod of the large plate auxiliary support cylinder 491 extends along the y' axis, driving the fixed pressure plate 4920 to approach the side of the transmission side large plate 10. After the second float 4923 contacts the transmission side large plate 10, the floating pin spring 4921 is compressed, and the second float 4923 moves backward. At this time, the second locking screw 4928 is tightened, so that the floating pressure plate 4925 slides along the guide pin 4927 and the pressure hole 49202 until the second float 4923 is pressed and locked.

[0103] S55. The large plate pressing block support cylinder 51 drives the transmission side large plate 10 to move along the y' axis, and the piston rod of the transmission side large plate 10 moves along the z' axis to clamp the transmission side large plate 10; specifically, the large plate pressing block support cylinder 51 is activated, the piston rod of the large plate pressing block support cylinder 51 drives the large plate pressing plate cylinder 50 along the y' axis, and the piston rod of the large plate pressing plate cylinder 50 moves along the z' axis to press against the top surface of the transmission side large plate 10.

[0104] S56. Milling machine side-mills 10 sides of the transmission side plate.

[0105] S57. Mounting plate for vertical milling motor of milling machine (14 sides).

[0106] S58. Remove the milled transmission side plate; specifically, after milling, loosen the second locking screw 4928 and the first locking screw 463, and reverse the operation of the large plate auxiliary support cylinder 491, the large plate pressure plate cylinder 50, the large plate pressure block support cylinder 51, the channel steel pneumatic pressure plate 47, and the outrigger pneumatic pressure plate 48; the second float 4923 moves back to its original position under the rebound action of the floating pin spring 4921. Remove the milled transmission side plate, and the first float 461 extends back to its original position under the action of the first spring 462.

[0107] It is worth noting that the placement of all the components described above is based on the third three-dimensional coordinate system. In fact, when corresponding to the first three-dimensional coordinate system, the transmission side plate 10 corresponds to the first mounting surface 10c.

[0108] Therefore, it is necessary to ensure that during the S5 process, the flatness of the first mounting surface 10c is ≤0.15mm and the perpendicularity between the first mounting surface 10c and the motor mounting plate 14 is ≤0.2mm.

[0109] S6. Milling the mounting surface of the non-transmission side plate; specifically, placing the non-transmission side plate on the milling machine worktable, ensuring that the opening side of the second channel steel assembly 17 faces upward, using the pressure plate provided with the milling machine worktable to press the two ends of the second channel steel assembly 17, and milling the mounting surface of the second channel steel assembly 17, which is existing technology and will not be described in detail here.

[0110] The mounting surface of the second channel steel component 17 is the second mounting surface 17c. Therefore, it is necessary to ensure that the flatness of the second mounting surface 17c is ≤0.1mm during the S6 process.

[0111] It is worth noting that the second channel steel assembly 17 has the same structure as the first channel steel assembly 11, with a U-shaped cross-section. The U-shaped opening side of the second channel steel assembly 17 forms the opening side of the second channel steel assembly 17. The second channel steel assembly 17 includes a second wing plate and a second web plate.

[0112] See Figures 25-29 S7. The first positioning fixture clamps the transmission side plate, the square tube body 19a and the non-transmission side plate, and welds them together to form a roller frame.

[0113] The first positioning fixture also includes a second side fitting limit block 29, a second channel steel limit block 30, a leg clamping mechanism 31, a second component pressing mechanism 32, a second channel steel web plate pressing mechanism 33, a second lateral pressing mechanism 34, a first square tube limit block 35, a second square tube limit block 36, and a third square tube limit block 37. All of the above components are arranged on the table surface of the first workbench 20 and are located on the other side of the x-axis away from the fixture pad 21, for clamping the non-transmission side piece.

[0114] A second side-fitting limiting block 29 is provided on the left side of the first workbench 20. The second side-fitting limiting block 29 has the same structure as the first side-fitting limiting block 22.

[0115] The first worktable 20 is provided with three second channel steel limiting blocks 30 along the x' axis. The second channel steel limiting blocks 30 have the same structure as the first channel steel limiting blocks 24 and are used to position the second channel steel assembly 17.

[0116] The first worktable 20 is provided with three leg clamping mechanisms 31 along the x' axis for clamping the second leg assembly 18. Specifically, each leg clamping mechanism 31 includes a sixth bracket 310, a leg clamping cylinder 311, a fourth pin 312, a fourth clamping arm 313, a fifth pin 314, a fourth support rod 315, and a sixth pin 316. The sixth bracket 310 is provided on the first worktable 20 and has an inverted L-shaped structure. The leg clamping cylinder 31 is installed on the crossbeam of the sixth bracket 310. 1. The piston rod of the outrigger clamping cylinder 311 is connected to the fourth clamping arm 313 via the fourth pin 312. The fourth clamping arm 313 has a hook-shaped structure. The middle part of the fourth clamping arm 313 is connected to one end of the fourth support rod 315 via the fifth pin 314. The other end of the fourth support rod 315 is connected to the fixed end of the outrigger clamping cylinder 311 via the sixth pin 316. When the outrigger clamping cylinder 311 is driven, the fourth clamping arm 313 is rotated around the fifth pin 314 and rotated to be locked inside the second outrigger assembly 18.

[0117] The first worktable 20 is provided with three second component clamping mechanisms 32 along the x' axis. The second component clamping mechanism 32 has the same structure as the first component clamping mechanism 26. The second component clamping mechanism 32 is used to clamp the second wing plate.

[0118] Three first square tube limiting blocks 35 are arranged along the x' axis in the middle of the first workbench 20, respectively abutting against the side of the square tube body 19a, and are used to position the square tube body 19a located below.

[0119] The first workbench 20 has two second square tube limiting blocks 36 placed on both sides of the x' axis. The top of the second square tube limiting block 36 has an L-shaped structure to position the square tube body 19a located on the upper two sides.

[0120] The first workbench 20 is also equipped with a third-party tube limiting block 37, which is located between the second square tube limiting blocks 36. The top of the third-party tube limiting block 37 has an inverted T-shaped structure to position the square tube body 19a located in the upper center.

[0121] It is worth noting that there are three columns of square tube body 19a along the x' axis; and each column has two layers along the z' axis. Therefore, the square tube body 19a located in the upper layer is the upper square tube body 19a, and the square tube body 19a located in the lower layer is the lower square tube body 19a. The square tube body 19a located in the middle column of the upper layer is the square tube body 19a located in the middle of the upper layer, and the two columns of square tube body 19a located on the two sides of the upper layer are the square tube body 19a located on the two sides of the upper layer.

[0122] A second lateral clamping mechanism 34 is provided on the right side of the first workbench 20. The second lateral clamping mechanism 34 has the same structure as the first lateral clamping mechanism 28. It works in conjunction with the second side fitting limit block 29 to clamp both ends of the second channel steel assembly 17. Further details are omitted.

[0123] The first positioning fixture clamps the transmission side plate and the non-transmission side plate, and the welding process to form the roller frame includes the following steps: S70. Clamp the transmission side plate, refer to S20~S24, and will not be repeated here.

[0124] S71. Clamp the non-drive side plate, specifically including the following steps; S710. Positioning the non-transmission side plate; specifically, the second channel steel assembly 17 has its opening facing the side, the second side fitting limit block 29 is fitted with the end face of the second wing plate, and the second channel steel limit block 30 is fitted with the side of the second wing plate.

[0125] S711. The outrigger clamping cylinder 311 clamps the second outrigger assembly 18; specifically, the outrigger clamping cylinder 311 is activated, which drives the fourth clamping arm 313 to rotate around the fifth pin 314 and rotate until it is locked inside the second outrigger assembly 18.

[0126] S712. The second component clamping mechanism 32 clamps the second wing plate; specifically, see S230, which will not be repeated here.

[0127] S713. The second channel steel web clamping mechanism 33 clamps the second web; specifically, see S231, which will not be repeated here.

[0128] S714. The second lateral tightening mechanism 34 fixes the second channel steel assembly 17; specifically, the second lateral tightening mechanism 34 is activated, see S24, which will not be repeated here.

[0129] S715. Position the square tube body 19a; specifically, place three square tube bodies 19a on the first worktable 20, so that the three square tube bodies 19a respectively abut against the sides of the first square tube limiting block 35, the second square tube limiting block 36 and the third square tube limiting block 37.

[0130] S72. The welded square tube body 19a, the transmission side plate and the non-transmission side plate form a roller frame, which is existing technology and will not be described in detail here.

[0131] S73. Remove the roller conveyor frame; specifically including the following steps; S730. Remove the restrictions on the transmission side plate assembly. See S27 for details.

[0132] S731. Release the restriction on the non-transmission side plate; specifically, reverse drive the second lateral clamping mechanism 34 to release the fixation on the right side of the second channel steel assembly 17; reverse drive the outrigger clamping cylinder 311, the second channel steel web clamping mechanism 33, and the second assembly pressing mechanism 32 to release the restriction on the non-transmission side plate and remove the roller frame.

[0133] It is worth mentioning that the placement of all the components is described based on the second three-dimensional coordinate system. In fact, corresponding to the first three-dimensional coordinate system, the bottom surface of the transmission side plate assembly is the first mounting surface 10c, and the bottom surface of the non-transmission side plate is the second mounting surface 17c.

[0134] Therefore, it is necessary to ensure that during the S7 process, the height difference between the first mounting surface 10c and the second mounting surface 17c is ≤0.2mm; and the parallelism between the first mounting surface 10c and the second mounting surface 17c is ≤0.15mm.

[0135] See Figure 30 S8. Drill the first bearing housing mounting hole 10d and the second bearing housing mounting hole 17d; based on the first three-dimensional coordinate system, the specific steps include: S80. Drill the first bearing housing mounting hole 10d; specifically, use the first bearing housing guide hole as a reference to perform fine reaming to ensure the position of the first bearing housing mounting hole 10d.

[0136] S81. Drill the second bearing housing mounting hole 17d; specifically including: S810. Pre-position the second bearing housing installation hole drilling template; pre-position the second bearing housing installation hole drilling template on the top surface of the second channel steel assembly 17. S811. Define the line connecting the first bearing housing mounting hole 10d at the foremost side and the drilling template hole at the second bearing housing mounting hole at the rearmost side as the first diagonal L1, and define the line connecting the drilling template hole at the second bearing housing mounting hole at the foremost side and the first bearing housing mounting hole 10d at the rearmost side as the second diagonal L2.

[0137] S812. Use a measuring tape to check the first diagonal L1 and the second diagonal L2. When L2-L1≤±1mm, use an F-clamp to fix the second bearing seat mounting hole drill template. The F-clamp is a woodworking clamp, which is a tool used to fix wood or other workpieces; it is existing technology and will not be described in detail.

[0138] S813. Drill centering holes along the hole positions of the second bearing housing mounting hole drilling template. After all the centering holes are drilled, remove the second bearing housing mounting hole drilling template and drill the second bearing housing mounting hole 17d with the centering holes as the reference.

[0139] During the S8 process, it is necessary to ensure that the first bearing housing mounting hole 10d and the second bearing housing mounting hole 17d are parallel and aligned, with a diagonal difference of ≤1mm.

[0140] In this embodiment, the installation surface is first milled and then welded to form the roller frame, replacing the existing technology of first welding the whole and then milling. This avoids the problem of limited processing equipment and high manufacturing costs caused by the fact that the whole roller frame is huge and has a large processing range, which means that only CNC gantry machining centers can be used. This breaks the limitations of traditional processes that rely too much on high-end equipment, resulting in high production costs and low efficiency.

[0141] Secondly, by setting up a dedicated first positioning fixture for the transmission side plate 10 and the first channel steel assembly 11 for positioning and clamping, the problem of poor accuracy and inconsistent performance caused by relying on the skills and experience of welders for manual marking, positioning and splicing in the existing technology is eliminated. In fact, the large welding deformation leaves a great deal of "remedial" pressure on the subsequent milling process. Therefore, in this implementation, the problem is solved from the source. As long as the first positioning fixture itself is manufactured accurately, each workpiece is positioned with the same reference and fixed with the same clamping force; the welding parameters are consistent, and the quality of each transmission side plate assembly produced is highly consistent, stable and predictable. Standardized and large-scale production is achieved, the product qualification rate is extremely high, and there is almost no scrap due to splicing and positioning errors.

[0142] Therefore, in the S2, not only can positioning and automatic clamping be achieved quickly, reducing clamping time from minutes to seconds and significantly reducing labor intensity, but it also reduces reliance on highly skilled welders and significantly accelerates the production cycle.

[0143] Moreover, in S7, the first positioning fixture can also be used to clamp the transmission side plate, the square tube body 19a, and the non-transmission side plate. This means that although the fixture is a dedicated system designed to achieve specific accuracy targets, it exhibits significant general-purpose functionality in the production process, demonstrating good process integration and flexibility.

[0144] Then, the flexible clamping and rigid locking of the second positioning fixture work together to position and clamp the parts. In fact, during the milling process, since the transmission side plate itself is not an absolutely rigid body, the transmission side plate will undergo extremely small elastic deformation or vibration under the cutting force of the milling cutter head.

[0145] In this way, once high-frequency vibration occurs between the milling cutter and the transmission side plate, it leaves obvious vibration marks on the machined surface, causing a sharp decrease in surface finish and flatness, which will result in the phenomenon of milling cutter vibration.

[0146] The transmission side plate retracts due to insufficient support; when the milling cutter leaves, the transmission side plate springs back, which leads to uneven actual cutting amount and the machined surface does not meet the required flatness, resulting in tool deflection.

[0147] However, in this embodiment, the web plate auxiliary support mechanism 46 and the large plate auxiliary support mechanism 49 allow the floating block, which extends actively before milling and is driven by the corresponding spring, to closely fit the contact position of the transmission side plate and then mechanically lock, forming a rigid lock. This greatly increases the local rigidity of the transmission side plate, thereby eliminating tool vibration and tool deflection.

[0148] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A second positioning fixture, configured to clamp a transmission side plate, the transmission side plate comprising a transmission side plate (10), a first channel steel assembly (11), and a first support leg assembly (13), the first channel steel assembly (11) comprising a first web plate (110), characterized in that, The second positioning fixture includes a second worktable (40), a first channel steel positioning mechanism, a web plate auxiliary support mechanism (46), a channel steel pneumatic pressure plate (47), a large plate auxiliary support mechanism (49), a large plate fixing mechanism, a leg positioning mechanism, and a leg pneumatic pressure plate (48). The second workbench (40) has pneumatic pressure plates (47) for channel steel on both sides along its length. A first channel steel positioning mechanism and a web plate auxiliary support mechanism (46) are arranged between the channel steel pneumatic pressure plates (47). The web plate auxiliary support mechanism (46) is arranged along one side of the width direction of the second workbench (40) with a large plate auxiliary support mechanism (49), a large plate fixing mechanism, a leg positioning mechanism, and a leg pneumatic pressure plate (48). The opening side of the first channel steel assembly (11) faces downward. The first channel steel positioning mechanism is configured to initially support and position the first channel steel assembly (11). The web plate auxiliary support mechanism (46) is configured to support the first channel steel assembly (11). The first web plate (110) is supported; the outrigger positioning mechanism is configured to position the first outrigger assembly (13); the channel steel pneumatic pressure plate (47) is configured to clamp and fix the first channel steel assembly (11); the outrigger pneumatic pressure plate (48) is configured to clamp and fix the first outrigger assembly (13); the large plate auxiliary support mechanism (49) is configured to clamp the transmission side large plate (10); the large plate fixing mechanism is configured to clamp and fix the transmission side large plate (10); and the output ends of the web plate auxiliary support mechanism (46) and the large plate auxiliary support mechanism (49) are both configured to cooperate in flexible clamping and rigid locking to perform support operations.

2. The second positioning fixture according to claim 1, characterized in that, The large plate auxiliary support mechanism (49) includes a fifth bracket (490), a large plate auxiliary support cylinder (491), and a large plate auxiliary unit. The fifth bracket (490) is set on the table surface of the second workbench (40). The large plate auxiliary support cylinder (491) is set on the fifth bracket (490). The piston rod of the large plate auxiliary support cylinder (491) is connected to the large plate auxiliary unit. The large plate auxiliary support cylinder (491) is configured to drive the large plate auxiliary unit to move horizontally. The large plate auxiliary unit is configured to flexibly slide and extend horizontally relative to the fixed end of the large plate auxiliary unit, and rigidly lock vertically relative to the fixed end of the large plate auxiliary unit.

3. The second positioning fixture according to claim 2, characterized in that, The large plate auxiliary unit includes a fixed pressure plate (4920), a floating pin spring (4921), a first clamping plate (4922), a second float (4923), a pressure plate spring (4924), a floating pressure plate (4925), a second clamping plate (4926), a pressure plate guide pin (4927), and a second locking screw (4928). The piston rod of the large plate auxiliary support cylinder (491) is connected to the fixed pressure plate (4920). The upper plate surface of the fixed pressure plate (4920) has an opening groove (49201). The second float (4923) is connected to the opening groove (49201) by a floating pin spring (4921). The second float (4923) partially slides in the opening groove (49201). The top opening of the opening groove (49201) is defined as the first opening (49201e). The end of the opening groove (49201) passes through to form the second opening (49201f). The side wall of the second float (4923) protrudes from the first opening (49201e), and the end of the second float (4923) protrudes from the second opening (49201f). A pressure hole (49202) is vertically formed on the top surface of the fixed pressure plate 4920. A pressure plate spring (4924) is connected inside the pressure hole (49202). A first clamping plate (4922) is provided on the bottom surface of the fixed pressure plate (4920). A floating pressure plate (4925) and a second clamping plate (4926) are sequentially provided on the top of the fixed pressure plate (4920). A pressure plate guide pin (4927) passes through the second clamping plate (4926) and the floating pressure plate (4925) in sequence, and the pressure plate guide pin (4927) is aligned with the pressure hole. (49202) forms a sliding guide fit, the second locking screw (4928) passes through the second clamping plate (4926) and the floating pressure plate (4925) in sequence, and the second locking screw (4928) is screwed into the fixed pressure plate (4920). The fixed pressure plate (4920), the first clamping plate (4922), the floating pressure plate (4925) and the second locking screw (4928) together form the fixed end of the large plate auxiliary unit, and the second floating block (4923) forms the output end of the large plate auxiliary unit.

4. The second positioning fixture according to claim 1, characterized in that, The web plate auxiliary support mechanism (46) includes a first sleeve base (460), a first floating block (461), a first spring (462) and a first locking screw (463); the first sleeve base (460) is provided on the table surface of the second workbench (40), the first sleeve base (460) is connected to the first floating block (461) through the first spring (462) in the cylinder cavity of the first sleeve base (460), the first locking screw (463) is screwed into the side of the first sleeve base (460), and the first locking screw (463) extending into the first sleeve base (460) abuts against the first floating block (461).

5. The second positioning fixture according to claim 1, characterized in that, The large plate fixing mechanism includes a large plate pressing cylinder (50), a large plate pressing block support cylinder (51), and a seventh bracket (52). The seventh bracket (52) is provided on the surface of the second workbench (40), and the large plate pressing block support cylinder (51) is provided on the top of the seventh bracket (52). The piston rod of the large plate pressing block support cylinder (51) is connected to the large plate pressing cylinder (50). The large plate pressing block support cylinder (51) is configured to drive the large plate pressing cylinder (50) to move horizontally, and the piston rod of the large plate pressing cylinder (50) is configured to move vertically.

6. The second positioning fixture according to claim 1, characterized in that, The outrigger positioning mechanism includes a lateral limiting block (44) and an outrigger pad (43). The outrigger pad (43) is provided on the surface of the second workbench (40), and the lateral limiting block (44) is provided on one side of the outrigger pad (43) along the length direction of the second workbench (40).

7. A positioning and clamping method using the second positioning fixture according to any one of claims 1 to 6, characterized in that, Includes the following steps; The first channel steel positioning mechanism initially supports and positions the first channel steel component (11); The web plate auxiliary support mechanism (46) supports the first web plate (110); The outrigger positioning mechanism supports and positions the first outrigger assembly (13); The pneumatic pressure plate (47) of the channel steel clamps and fixes the first channel steel assembly (11); The outrigger pneumatic pressure plate (48) clamps and fixes the first outrigger assembly (13); The large plate auxiliary support mechanism (49) clamps the transmission side large plate (10). The large plate fixing mechanism clamps and fixes the transmission side large plate (10).

8. The positioning and clamping method according to claim 7, characterized in that, The large plate auxiliary support mechanism (49) uses flexible clamping and rigid locking to clamp the transmission side large plate (10) in a coordinated manner, specifically including the following steps; When the large plate auxiliary support cylinder (491) is activated, the piston rod of the large plate auxiliary support cylinder (491) extends, driving the output end of the large plate auxiliary unit to slide flexibly horizontally relative to the fixed end of the large plate auxiliary unit until it contacts the side of the transmission side large plate (10). Then, the output end of the large plate auxiliary unit is rigidly locked vertically relative to the fixed end of the large plate auxiliary unit, pressing against the side of the transmission side large plate (10).

9. The positioning and clamping method according to claim 8, characterized in that, After the output end of the large plate auxiliary unit slides and extends horizontally to contact the side of the transmission side plate (10), the output end of the large plate auxiliary unit is rigidly locked in the vertical direction relative to the fixed end of the large plate auxiliary unit to the side of the transmission side plate (10). Specifically, the following steps are included: Start the auxiliary support cylinder (491) of the large plate. The piston rod of the auxiliary support cylinder (491) extends and drives the fixed pressure plate (4920) to approach the side of the transmission side plate (10). The second float (4923) contacts the transmission side plate (10). The floating pin spring (4921) is flexibly compressed and the second float (4923) moves backward. Tighten the second locking screw (4928). The floating pressure plate (4925) slides along the guide engagement of the pressure plate guide pin (4927) and the pressure hole (49202) until the floating pressure plate (4925) presses the second float (4923) tightly. The second float (4923) is rigidly locked and pressed against the side of the transmission side plate (10).

10. A method for processing a roller conveyor frame using the positioning and clamping method according to any one of claims 7 to 9, characterized in that, Includes the following steps; The first positioning fixture positions and clamps the transmission side plate (10), the first channel steel assembly (11), and the reinforcing rib plate (12) to control the welding deformation, and then welds them together to form the transmission side plate assembly. The transmission side plate assembly, the first leg assembly (13), the motor mounting plate (14), the set screw plate and the first fixed-length rectangular tube (16) are assembled and welded to form the transmission side plate; The second channel steel assembly (17), the second leg assembly (18), and the second fixed-length rectangular tube (19) are welded together to form a non-transmission side plate; The second positioning fixture uses a combination of flexible clamping and rigid locking to position and clamp the transmission side plate, and mills the mounting surface of the transmission side plate. Milling the mounting surface of the non-transmission side plate; The first positioning fixture clamps the transmission side plate, the square tube body (19a), and the non-transmission side plate, and welds them together to form a roller frame; Drill the first bearing housing mounting hole (10d) on the mounting surface of the transmission side plate, and drill the second bearing housing mounting hole (17d) on the mounting surface of the non-transmission side plate.

Images