Wheelchair adjusting rod producing and machining equipment and machining method thereof
By designing wheelchair adjustment rod production and processing equipment, automated clamping, uniform grinding, and dust collection were achieved, solving the problems of low automation, difficulty in ensuring processing consistency, insufficient production efficiency, and inadequate dust treatment in existing technologies, thereby improving production efficiency and environmental quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-06
- Publication Date
- 2026-04-07
AI Technical Summary
The existing wheelchair adjustment rod grinding process suffers from low automation, difficulty in ensuring processing consistency, inability to meet batch production needs, and poor working environment due to the lack of effective collection and treatment of grinding dust.
A wheelchair adjustment rod manufacturing and processing equipment was designed, including a feeding and guiding assembly, a positioning and clamping assembly, a grinding assembly, an adaptive adjustment mechanism, an intelligent sensing system, a drive and transmission mechanism, and a dust removal assembly. Through intelligent control, automated clamping, uniform grinding, and dust collection are achieved, forming a closed-loop control mechanism.
It significantly improves automation and batch processing efficiency, enhances product quality consistency and surface quality stability, improves the working environment, reduces occupational health risks, and lowers overall operating costs.
Smart Images
Figure CN121798451A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of wheelchair production equipment, in particular to a wheelchair adjusting rod production and processing equipment and a processing method thereof. BACKGROUND
[0002] As an important component of rehabilitation aids, the structural safety and adjustment convenience of a wheelchair are directly related to the comfort and safety of the user. The modern wheelchair manufacturing system represented by enterprises such as Invacare Corporation and Sunrise Medical has gradually developed towards modularization, lightweight and mass production. Among them, the wheelchair adjusting rod, as a key load-bearing component for adjusting the seat height, backrest angle or armrest height, is usually processed from metal pipes or solid rods. It has high requirements for its dimensional accuracy, surface finish and corrosion resistance.
[0003] In the production process of the wheelchair adjusting rod, it usually includes the following steps: blanking, turning or stamping forming, drilling and tapping, surface treatment and polishing. Among them, the polishing process is used to remove burrs, oxidation layers and microscopic uneven areas after machining, which is an important pretreatment link to ensure the quality of subsequent spraying, electroplating or anodizing. If the polishing quality is not up to standard, not only the appearance will be affected, but also fatigue cracks may occur due to stress concentration during use, thereby reducing the structural reliability of the adjusting rod.
[0004] However, in the existing wheelchair production equipment system, the surface polishing of the adjusting rod is usually operated by manual holding of a grinding wheel or a belt sander. This method has the following disadvantages: first, manual polishing relies on the experience of the operator, and the polishing pressure, angle and time are difficult to standardize, resulting in poor consistency of the product surface; second, manual efficiency is limited, which is difficult to match the rhythm demand of modern assembly line, and is not conducive to large-scale production; third, a large amount of metal dust and debris is generated during polishing, which not only pollutes the workshop environment, but also may cause damage to the respiratory system and skin of the operator if effective dust collection measures are lacking; fourth, the labor intensity of continuous operation is large, and long-term operation may cause occupational health problems.
[0005] With the transformation of the wheelchair industry towards automated and intelligent production, the traditional manual adjusting rod polishing method has gradually become a bottleneck restricting the improvement of production efficiency and product quality. Therefore, it is necessary to develop a special production and processing equipment that can stably clamp, automatically transport, uniformly polish and support dust removal treatment for the wheelchair adjusting rod, and at the same time cooperate with the corresponding processing method to realize the standardization and efficiency of the polishing process.
[0006] Based on the above, it is found that the prior art at least has the following technical problems: The existing wheelchair adjusting rod polishing process has low automation degree, it is difficult to guarantee the processing consistency, the production efficiency cannot meet the batch demand, and the polishing dust lacks effective collection and processing, resulting in poor working environment. SUMMARY
[0007] The present application aims to provide a wheelchair adjusting rod production and processing equipment and a processing method thereof, so as to solve the problems of low automation degree in the existing wheelchair adjusting rod polishing process, difficult to guarantee the processing consistency, production efficiency cannot meet the batch demand, and the polishing dust lacks effective collection and processing, resulting in poor working environment.
[0008] The preferred technical solutions in the many technical solutions provided by the present application can produce many technical effects, which are described in detail below.
[0009] In order to solve the above technical problems, the present application provides the following technical solutions: The present application provides a wheelchair adjusting rod production and processing equipment, comprising a feeding and guiding assembly provided on a rack, which is used to feed the wheelchair adjusting rod to be processed into a processing position and keep axial guidance; a positioning and clamping assembly provided at the processing position, which is used to clamp and position the wheelchair adjusting rod to limit radial swing and / or axial movement; a polishing assembly located at the processing position and used to polish the outer surface of the wheelchair adjusting rod; an adaptive adjustment mechanism connected to the positioning and clamping assembly and / or the polishing assembly, which is used to automatically adjust the clamping distance, clamping force and / or polishing angle according to the actual size parameters of the wheelchair adjusting rod; an intelligent sensing system, which is used to collect the size parameters and / or polishing state parameters of the wheelchair adjusting rod, and cooperate with the controller to output adjustment instructions; a driving and transmission mechanism, which is used to drive the movement of the polishing assembly and drive the rotation and / or conveying of the wheelchair adjusting rod; a dust removal assembly provided in the dust generating area of the polishing assembly, which is used to capture and transport the polishing dust generated in the polishing process to a dust collection unit; wherein the controller generates the clamping force and the polishing angle based on the size parameters, and dynamically corrects the clamping force and / or the polishing angle based on the polishing state parameters during the polishing process, so that the wheelchair adjusting rod obtains uniform polishing in a stable clamping state.
[0010] In one embodiment, the positioning and clamping assembly includes a first clamping member and a second clamping member arranged oppositely, forming a clamping plate type fitting structure; at least one of the clamping members realizes opening and closing distance adjustment through the adaptive adjustment mechanism, and the clamping contact surface of the clamping member is an arc surface gasket or a flexible coating, which is used to fit the outer surface of the wheelchair adjusting rod with different diameters.
[0011] In one embodiment, the positioning and clamping assembly is provided with a linkage positioning mechanism that synchronously drives the end stopper or lateral stopper to abut against the end and / or step portion of the wheelchair adjusting rod during the closing of the first clamping member and the second clamping member, so as to perform axial positioning on the wheelchair adjusting rod and inhibit axial movement.
[0012] In one embodiment, the polishing assembly is a sand belt polishing unit and / or a sand wheel polishing unit, which is installed through a swing bracket or a universal hinge seat to adjust the polishing angle under the driving of the self-adaptive adjusting mechanism; and the polishing assembly is provided with a pressure follow-up mechanism for maintaining the polishing contact pressure within a set window.
[0013] In one embodiment, the intelligent sensing system includes a size detection unit, which is one or more of a laser ranging sensor, a structured light vision measurement assembly, and a contact type displacement sensor, for detecting at least the diameter D, the ovality E, and / or the surface run-out T of the wheelchair adjusting rod; and the controller generates the set value of the clamping distance and the set value of the polishing angle based on D, E, and / or T.
[0014] In one embodiment, the self-adaptive adjusting mechanism includes an actuator and a feedback unit, the actuator being one or more of a servo motor + screw rod, a linear electric cylinder, or a gas-liquid booster cylinder; and the feedback unit includes a force sensor and / or a displacement sensor for closed-loop feedback on the clamping force F and / or the clamping displacement S, so as to keep the clamping force F within a preset window range.
[0015] In one embodiment, the driving and transmission mechanism includes a rotary driving unit that clamps the end of the wheelchair adjusting rod to drive the wheelchair adjusting rod to rotate around its own axis, or that contacts the surface of the wheelchair adjusting rod through a roller friction wheel to drive the wheelchair adjusting rod to rotate around its own axis, so that the polishing assembly can uniformly polish the peripheral surface of the wheelchair adjusting rod.
[0016] In one embodiment, the dust removal assembly includes a dust collection cover surrounding the polishing contact area between the polishing assembly and the wheelchair adjusting rod, a negative pressure suction pipeline connected to the dust collection cover, and a dust collection unit connected to the negative pressure suction pipeline; the opening of the dust collection cover faces the contact area between the wheelchair adjusting rod and the polishing assembly, and is provided with an adjustable opening gap to adapt to the wheelchair adjusting rod of different diameters; and the dust collection unit includes a cyclone separation structure and / or a filter cartridge filtering structure.
[0017] A wheelchair adjusting rod processing method is also provided, which is applied to a wheelchair adjusting rod production and processing equipment and includes the following steps: S1, feeding and guiding: a feeding and guiding assembly feeds the wheelchair adjusting rod into a processing position and performs axial guiding; S2, size identification: an intelligent sensing system collects the diameter D and / or the ovality E and / or the runout T of the wheelchair adjusting rod; S3, adaptive clamping and positioning: a controller sets a clamping interval and a clamping force F according to D, E and / or T, drives a first clamping piece and a second clamping piece to close, and controls a linkage positioning mechanism to perform axial limiting; S4, adaptive grinding: a driving and transmission mechanism drives a grinding assembly to operate and drives the wheelchair adjusting rod to rotate, the controller sets a grinding angle θ and a contact pressure P according to D, E and / or T, and dynamically corrects θ and / or P according to grinding state parameters during the grinding process; S5, dust removal treatment: a dust removal assembly is synchronously opened to perform negative pressure dust removal on a grinding contact area to capture and filter dust; S6, discharging: after the wheelchair adjusting rod is finished grinding, a positioning and clamping assembly releases clamping and axial positioning, and outputs the wheelchair adjusting rod.
[0018] In one embodiment, the grinding state parameters in S4 include at least one of the following: a grinding driving motor current I of the grinding assembly, a vibration value V of the wheelchair adjusting rod, a dust concentration C of the dust removal assembly, or a surface roughness representation parameter R of the wheelchair adjusting rod; when I, V, C or R deviates from a preset threshold value, the controller performs at least one linkage adjustment: adjusts the clamping force F, adjusts the grinding angle θ, adjusts the grinding speed, adjusts the rotation speed of the wheelchair adjusting rod, or triggers a stop alarm, thereby ensuring the quality consistency of batch processing of the wheelchair adjusting rod and reducing dust escape.
[0019] The beneficial effects of the present application are as follows: (1) Significantly improve the degree of automation and batch processing efficiency The feeding and guiding assembly realizes automatic conveying and axial guiding of the adjusting rod, the driving and transmission mechanism drives the wheelchair adjusting rod to rotate or convey, the grinding process is continuously performed, manual operation is avoided, the production rhythm and unit time output capacity are greatly improved, and the needs of large-scale production are met.
[0020] (2) Improve the product quality consistency and surface quality stability of the processing The positioning and clamping assembly stably clamps the wheelchair adjusting rod, limits radial swing and axial movement; the self-adaptive adjusting mechanism automatically adjusts the clamping distance, clamping force and polishing angle according to the size parameters, so that the surfaces of wheelchair adjusting rods with different diameters or shape and position deviations can be stably fitted and uniformly stressed; the controller dynamically corrects based on the polishing state parameters during polishing, forms a closed-loop control mechanism, thereby effectively reducing human and processing errors, and ensuring the surface finish and processing consistency of batch processing products.
[0021] (3) Adapt to different specifications of adjusting rod, improve the versatility of the equipment The intelligent sensing system can collect the size parameters of the wheelchair adjusting rod, and the controller generates the set values of the clamping force and the polishing angle based on the size parameters, so as to automatically match different specifications of the wheelchair adjusting rod, without frequent tool replacement or complex manual adjustment, thereby improving the adaptability and flexible processing capability of the wheelchair adjusting rod production and processing equipment.
[0022] (4) Improve the working environment and reduce the risk of occupational health By setting a dust removal assembly in the polishing contact area, the dust generated during polishing is immediately captured and transported to the dust collection unit for treatment, effectively reducing dust escape, improving air quality in the workshop, and reducing the risk of dust inhalation by operators, thereby optimizing the working environment.
[0023] (5) Reduce labor dependence and comprehensive operating cost The technical solution replaces manual experience judgment with automatic control and closed-loop adjustment, reduces the number of operators and labor intensity, reduces the rework rate and quality fluctuation caused by human error, thereby reducing the enterprise's comprehensive production cost in the long run.
[0024] In summary, the technical solution combines structure integration and intelligent control to solve the technical problems of low automation degree, difficult to guarantee processing consistency, insufficient production efficiency and insufficient dust treatment of the existing wheelchair adjusting rod polishing, and realizes efficient, stable and environmentally friendly automatic polishing of wheelchair adjusting rods. BRIEF DESCRIPTION OF DRAWINGS
[0025] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0026] Figure 1 is a schematic view of the composition structure of the wheelchair adjusting rod production and processing equipment of the present application from the top view; Figure 2 is a schematic view of the flow steps of the processing method of the wheelchair adjusting rod of the present application.
[0027] Wherein, the reference signs are as follows: 1. Rack; 2. Feeding and guiding assembly; 21. Conveyor belt; 22. Guide plate; 3. Positioning and clamping assembly; 31. First clamping piece; 32. Second clamping piece; 33. Linkage positioning mechanism; 4. Polishing assembly; 41. Polishing unit; 42. Pressing and following mechanism; 5. Self-adaptive adjusting mechanism; 6. Intelligent sensing system; 7. Driving and transmission mechanism; 71. Rotary driving unit; 8. Dust removal assembly; 81. Dust collection cover; 82. Negative pressure suction pipeline; 83. Dust collection unit; 91. Controller; 92. Wheelchair adjusting rod. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application.
[0029] A wheelchair adjusting rod production and processing equipment and a processing method thereof are provided in the specific embodiments. The production and processing equipment comprises a feeding and guiding assembly, a positioning and clamping assembly, a polishing assembly, a self-adaptive adjusting mechanism, an intelligent sensing system, a driving and transmission mechanism, and a dust removal assembly which are arranged on a rack. The feeding and guiding assembly is used to feed the wheelchair adjusting rod to be processed into a processing position and keep axial guidance. The positioning and clamping assembly is used to clamp and position the adjusting rod to limit radial swing and / or axial movement. The polishing assembly is used to polish the outer surface of the adjusting rod. The self-adaptive adjusting mechanism is used to automatically adjust the clamping distance, clamping force and / or polishing angle according to the actual size parameters of the adjusting rod. The intelligent sensing system is used to collect the size parameters and / or polishing state parameters of the adjusting rod and output adjusting instructions in cooperation with the controller. The driving and transmission mechanism is used to drive the movement of the polishing assembly and drive the rotation and / or conveying of the adjusting rod. The dust removal assembly is used to capture the dust generated in the polishing process and transport it to the dust collection unit. The controller generates the clamping force and polishing angle based on the size parameters and dynamically corrects them based on the polishing state parameters during the polishing process, so that the adjusting rod is uniformly polished in a stable clamping state. This technical solution can improve the polishing automation degree and processing consistency, improve the production efficiency, and effectively improve the working environment. It effectively solves the problems of low polishing automation degree, difficult to guarantee the processing consistency, unable to meet the batch production demand, and poor working environment caused by lack of effective collection and processing of polishing dust in the existing wheelchair adjusting rod polishing process.
[0030] The first embodiment of the wheelchair adjusting rod production and processing equipment Figure 1As shown, the assembly includes, mounted on frame 1: a feeding and guiding assembly 2 for feeding the wheelchair adjustment rod 92 to be processed into the processing position and maintaining axial guidance; a positioning and clamping assembly 3, located at the processing position, for clamping and positioning the wheelchair adjustment rod 92 to limit radial sway and / or axial movement; a grinding assembly 4, located at the processing position and used to grind the outer surface of the wheelchair adjustment rod 92; an adaptive adjustment mechanism 5, connected to the positioning and clamping assembly 3 and / or the grinding assembly 4, for automatically adjusting the clamping distance, clamping force, and / or grinding angle according to the actual size parameters of the wheelchair adjustment rod 92; and an intelligent sensing system 6 for collecting data from the wheelchair... The controller 92 is configured to output adjustment commands in conjunction with the size parameters and / or grinding status parameters of the adjustment rod 92; the drive and transmission mechanism 7 is used to drive the grinding assembly 4 to move and drive the wheelchair adjustment rod 92 to rotate and / or transport; the dust removal assembly 8 is located in the dust generation area of the grinding assembly 4 and is used to collect the grinding dust generated during the grinding process and transport it to the dust collection unit 83; wherein, the controller 91 generates the clamping force and grinding angle based on the size parameters, and dynamically corrects the clamping force and / or grinding angle based on the grinding status parameters during the grinding process, so that the wheelchair adjustment rod 92 can be uniformly ground under a stable clamping state.
[0031] The controller 91 is electrically connected to the feeding and guiding assembly 2, the positioning and clamping assembly 3, the grinding assembly 4, the adaptive adjustment mechanism 5, the intelligent sensing system 6, the drive and transmission mechanism 7, and the dust removal assembly 8, respectively. It controls the various components of the wheelchair adjustment rod production and processing equipment as a whole through bus communication, and realizes high-precision and precise input, grinding and output actions for the wheelchair adjustment rod 92.
[0032] Specifically, compared with the existing processing method of wheelchair adjustment rods 92 that relies on manual grinding, the present invention forms an automated grinding processing system with closed-loop control capability through the coordinated cooperation of the feeding and guiding component 2, the positioning and clamping component 3, the grinding component 4, the adaptive adjustment mechanism 5, the intelligent sensing system 6, the drive and transmission mechanism 7, and the dust removal component 8. It has at least the following technical effects: significantly improving the degree of automation and batch processing efficiency; the present invention realizes the automatic delivery and axial guidance of the adjustment rod through the feeding and guiding component 2, and drives the wheelchair adjustment rod 92 to rotate or deliver through the drive and transmission mechanism 7, so that the grinding process is continuous, avoiding manual operation of each piece, greatly improving the production cycle and output capacity per unit time, and meeting the needs of large-scale production.
[0033] The system improves the consistency and surface quality stability of the processed products. The positioning and clamping assembly 3 stably clamps the wheelchair adjustment rod 92, limiting radial sway and axial movement. The adaptive adjustment mechanism 5 automatically adjusts the clamping distance, clamping force, and grinding angle according to the dimensional parameters, so that the surfaces of wheelchair adjustment rods 92 with different diameters or dimensional deviations can achieve stable fit and uniform force. The controller 91 dynamically corrects the grinding state parameters during the grinding process, forming a closed-loop control mechanism, thereby effectively reducing human error and processing errors, and ensuring the surface finish and processing consistency of batch processed products.
[0034] Adaptable to different specifications of adjustment rods, improving equipment versatility; the intelligent sensing system 6 can collect the dimensional parameters of the wheelchair adjustment rod 92, and the controller 91 generates the set values of clamping force and grinding angle based on the dimensional parameters, realizing automatic matching of wheelchair adjustment rods 92 of different specifications, without the need for frequent tooling changes or complex manual adjustments, thus improving the adaptability and flexible processing capability of wheelchair adjustment rod production and processing equipment.
[0035] Improving the working environment and reducing occupational health risks: By setting up a dust removal component 8 in the grinding contact area, the dust generated during the grinding process is captured in real time and transported to the dust collection unit 83 for treatment, which effectively reduces dust escape, improves the air quality in the workshop, reduces the risk of operators inhaling dust, and thus optimizes the working environment.
[0036] This technical solution reduces reliance on manual labor and overall operating costs by replacing manual experience-based judgment with automatic control and closed-loop regulation. This reduces the number of operators and their labor intensity, and lowers the rework rate and quality fluctuations caused by human error, thereby reducing the company's overall production costs in the long run.
[0037] In summary, this technical solution solves the technical problems of low automation in the grinding of wheelchair adjustment rods 92, difficulty in ensuring processing consistency, insufficient production efficiency, and inadequate dust treatment by combining structural integration with intelligent control. It achieves efficient, stable, and environmentally friendly automatic grinding of wheelchair adjustment rods 92.
[0038] As one alternative implementation method: Regarding the specific structure and function of the aforementioned feeding and guiding component 2, this embodiment is as follows: Figure 1 As shown, the feeding and guiding assembly 2 includes a conveyor belt 21 for feeding the wheelchair adjustment rod 92 to be processed from the feed end into the processing position, and two guide plates 22 arranged in opposite parallel directions along the conveying direction to maintain the axial guiding position of the wheelchair adjustment rod 92 during conveying.
[0039] The conveyor belt 21 is driven by a motor of the drive and transmission mechanism 7.
[0040] In application, the conveyor belt 21 continuously transports the wheelchair adjusting rod 92 from the feeding end to the processing position. Two parallel guide plates 22 laterally limit the adjusting rod, ensuring its axial stability and preventing lateral sway during transport. The guiding structure formed by the guide plates 22 and the subsequent positioning and clamping assembly 3 create a seamless positioning transition, allowing the adjusting rod to undergo preliminary posture correction before entering the clamping area. This reduces the risk of impact and off-center loading during clamping, improving clamping accuracy and stability. This coordinated approach of front guidance and rear precision positioning effectively solves the problem of grinding eccentricity caused by inaccurate manual placement, while also improving overall cycle stability and conveying continuity.
[0041] In addition, the guide plate 22 is equipped with an adjustable spacing structure to accommodate wheelchair adjustment rods 92 of different diameters; the conveyor belt 21 is a wear-resistant rubber belt, chain plate structure or roller structure; the feed end can be equipped with buffer rollers or transition slopes to reduce impact.
[0042] The guide gap between the guide plate 22 and the wheelchair adjustment rod 92 is controlled within the range of ±1~2mm of the adjustment rod diameter to ensure smooth transport and prevent jamming.
[0043] Regarding the specific structure and function of the aforementioned positioning and clamping component 3, this embodiment is as follows: Figure 1 As shown, the positioning clamping assembly 3 includes a first clamping member 31 and a second clamping member 32 arranged opposite to each other, forming a clamping plate-type fitting structure; at least one clamping member achieves opening and closing adjustment distance via an adaptive adjustment mechanism 5, and the clamping contact surface of the clamping member is an arc-shaped pad or a flexible covering layer, used to fit the outer surface of wheelchair adjustment rods 92 of different diameters.
[0044] Furthermore, the positioning clamping assembly 3 is equipped with a linkage positioning mechanism 33. During the closing process of the first clamping member 31 and the second clamping member 32, the linkage positioning mechanism 33 synchronously drives the end stop or the lateral limiting member to abut against the end and / or the step of the wheelchair adjustment rod 92, so as to perform axial positioning on the wheelchair adjustment rod 92 and suppress axial movement.
[0045] The positioning and clamping assembly 3 is driven by the motor of the drive and transmission mechanism 7 to clamp and release the first clamping member 31 and the second clamping member 32, and to extend and reset the linkage positioning mechanism 33.
[0046] When applied, the first clamping member 31 and the second clamping member 32 close synchronously under the drive of the adaptive adjustment mechanism 5. The arc-shaped pad or flexible cover fits against the outer ring of the rolling bearing fixture pre-installed on the end face of the wheelchair adjustment rod 92, forming a large area of force contact, thereby avoiding local indentations caused by clamping the outer surface of the wheelchair adjustment rod 92.
[0047] The linkage positioning mechanism 33 operates synchronously during the clamping and closing process, causing the end stop or lateral limiting member to abut against the end or step of the wheelchair adjustment rod 92, thereby achieving axial limiting. The linkage positioning mechanism 33 works in conjunction with the drive and transmission mechanism 7 to ensure that the wheelchair adjustment rod 92 has neither axial movement nor radial runout during rotary grinding, ensuring a stable grinding trajectory, thereby improving surface uniformity and consistency, and solving the problem of processing quality fluctuations caused by manual handling and unstable clamping.
[0048] The first clamping member 31 and the second clamping member 32 can be replaced with a curved surface pad; the linkage positioning mechanism 33 can be a cam linkage or a synchronous rod structure; the clamping closing speed is set to a segmented type, first approaching quickly and then fitting at a low speed.
[0049] The clamping force setting range of the first clamping member 31 and the second clamping member 32 can be set, for example, according to the different diameters of the wheelchair adjustment rod 92, in order to enhance clamping stability.
[0050] Before the rolling bearing fixture is installed on the end face of the wheelchair adjustment rod 92, the axis center needs to be measured by the axis positioning fixture and the threaded hole needs to be drilled. The threaded connector installed on the inner ring of the rolling bearing fixture is threadedly connected to the threaded hole on the end face of the wheelchair adjustment rod 92.
[0051] Regarding the specific structure and function of the aforementioned polishing component 4, this embodiment is as follows: Figure 1 As shown, the grinding assembly 4 is a belt grinding unit 41 and / or a grinding wheel grinding unit 41. The grinding assembly 4 is installed by a swing bracket or a universal hinge seat to adjust the grinding angle under the drive of the adaptive adjustment mechanism 5. The grinding assembly 4 is provided with a pressing follower mechanism 42 to maintain the grinding contact pressure within the set window.
[0052] The polishing component 4 is driven by the motor of the drive and transmission mechanism 7 to adjust the polishing angle and move on the surface of the wheelchair adjustment rod 92 for polishing.
[0053] During application, the grinding component 4, supported by a swing bracket or universal hinge, forms an adjustable contact angle with the wheelchair adjustment rod 92. The adaptive adjustment mechanism 5 adjusts the grinding angle θ according to the dimensional detection results, ensuring that the contact surface always maintains the optimal cutting posture. The clamping follow-up mechanism 42 compensates in real time for gap changes caused by material wear or micro-vibration, maintaining the contact pressure P within the set window, thereby ensuring a stable removal amount. This structure, in conjunction with the rotary drive unit 71, enables uniform circumferential grinding of the outer circumferential surface of the wheelchair adjustment rod 92, effectively solving the problem of local over-grinding or under-grinding caused by unstable manual hand-held grinding angles.
[0054] The belt speed of the belt grinding unit 41 can be set to 10–30 m / s; the clamping follow-up mechanism 42 can adopt a spring compensation or servo tracking compensation structure; the grinding assembly 4 can be equipped with a quick-change module.
[0055] The outer circumference of the wheelchair adjustment rod 92 is polished to achieve the target roughness Ra range, Ra≤1.6μm.
[0056] Regarding the specific structure and function of the aforementioned intelligent sensing system 6, this implementation is as follows: Figure 1 As shown, the intelligent sensing system 6 includes a size detection unit, which is one or more of a laser rangefinder, a structured light vision measurement component, and a contact displacement sensor, used to detect at least the diameter D, ellipticity E, and / or surface runout T of the wheelchair adjustment rod 92; the controller 91 generates a set value for the clamping distance and a set value for the grinding angle based on D, E, and / or T.
[0057] During application, the dimensional detection unit performs real-time detection of the diameter D, ellipticity E, or runout T of the wheelchair adjustment rod 92. The controller 91 generates clamping distance and grinding angle settings based on the detection results. The intelligent sensing system 6 and the adaptive adjustment mechanism 5 form a closed-loop control, enabling stable clamping and precise grinding of wheelchair adjustment rods 92 of different specifications without manual adjustment. This data-driven control method solves the problems of heavy reliance on manual experience and complex specification switching, improving processing consistency and automation levels.
[0058] In addition, a data storage module can be set up to save different specification parameters, and control instructions can be generated by introducing a simple mapping model or a lookup table method.
[0059] The controller 91 adopts a PLC or embedded control system, and the dimensional parameters can be converted into angle and clamping force set values through algorithms.
[0060] Regarding the specific structure and function of the aforementioned adaptive adjustment mechanism 5, this embodiment is as follows: Figure 1 As shown, the adaptive adjustment mechanism 5 includes an actuator and a feedback unit. The actuator is one or more of a servo motor + lead screw, linear electric cylinder, or pneumatic-hydraulic booster cylinder. The feedback unit includes a force sensor and / or a displacement sensor, which is used to provide closed-loop feedback on the clamping force F and / or clamping displacement S, so that the clamping force F is kept within a preset window range.
[0061] The adaptive adjustment mechanism 5 is driven by a servo motor of the drive and transmission mechanism 7.
[0062] During application, the actuator drives the first clamping member 31 and the second clamping member 32 to open and close or adjust the grinding angle of the grinding assembly 4 according to the instructions of the controller 91. The feedback unit collects the clamping force F or displacement S data in real time and sends it back to the controller 91, forming a closed-loop control to keep the clamping force within the preset range. This structure works in conjunction with the intelligent sensing system 6 to prevent damage to the rolling bearing fixture due to excessive tightness or slippage due to excessive looseness, which could cause large radial runout of the wheelchair adjustment rod 92. This ensures rotational stability and grinding uniformity, solving the problem that traditional mechanical rigid clamping cannot adapt to dimensional fluctuations.
[0063] In addition, the actuator can be a servo motor lead screw or an electric cylinder; the feedback sampling frequency can be set to 100–500Hz.
[0064] The closed-loop control logic of controller 91 automatically corrects when the clamping force F deviates from the set value by ±10%.
[0065] Regarding the specific structure and function of the aforementioned drive and transmission mechanism 7, this embodiment is as follows: Figure 1 As shown, the drive and transmission mechanism 7 includes a rotary drive unit 71. The rotary drive unit 71 drives the wheelchair adjustment rod 92 to rotate around its own axis by clamping the end of the wheelchair adjustment rod 92 with the clamping end, or drives the wheelchair adjustment rod 92 to rotate around its own axis by contacting the surface of the wheelchair adjustment rod 92 with the roller friction wheel, so that the grinding assembly 4 can achieve circumferential uniform grinding on the outer peripheral surface of the wheelchair adjustment rod 92.
[0066] In application, the rotary drive unit 71 drives the wheelchair adjustment rod 92 to rotate around its axis via end clamping or roller friction, enabling the grinding assembly 4 to continuously process the outer circumferential surface of the wheelchair adjustment rod 92. This structure, in conjunction with the positioning clamping assembly 3, forms a stable "fixed + rotating" processing mode, avoiding manual flipping operations, thereby improving efficiency and reducing the risk of eccentricity, thus solving the problems of low grinding efficiency and quality fluctuations.
[0067] When the wheelchair adjustment rod 92 is equipped with a rolling bearing fixture, the rotary drive unit 71 clamps the threaded connection of the rolling bearing fixture through the clamping end, thereby driving the wheelchair adjustment rod 92 to rotate.
[0068] The rotation speed of the rotary drive unit 71 can be set to 50–300 rpm; an acceleration / deceleration buffer program can be set in the controller 91; and the rotary drive method can be a servo motor + reducer structure.
[0069] Regarding the specific structure and function of the aforementioned dust removal component 8, this embodiment is as follows: Figure 1As shown, the dust collection assembly 8 includes a dust collection hood 81 surrounding the grinding contact area between the grinding assembly 4 and the wheelchair adjustment rod 92, a negative pressure suction pipe 82 connected to the dust collection hood 81, and a dust collection unit 83 connected to the negative pressure suction pipe 82; the opening of the dust collection hood 81 faces the contact area between the wheelchair adjustment rod 92 and the grinding assembly 4, and is provided with an adjustable opening gap to accommodate wheelchair adjustment rods 92 of different diameters; the dust collection unit 83 includes a cyclone separation structure and / or a filter cartridge filtration structure.
[0070] During application, the dust collection hood 81 covers the grinding contact area and creates a local negative pressure environment. Dust is transported to the dust collection unit 83 through the suction pipe, and after being separated by cyclone separation or filtered by filter cartridge, clean air is discharged. This structure works synchronously with the grinding component 4, and can adsorb dust the moment it is generated, effectively reducing dust diffusion and solving the problems of serious dust pollution and occupational health risks in the workshop.
[0071] The negative pressure value of the dust removal component 8 when adsorbing grinding dust can be controlled within the range of −500Pa to −1500Pa; a dust concentration detection linkage start-stop function can be set; among them, the filtration efficiency of the dust collection unit 83 needs to reach ≥90% to reduce the impact on the air quality of the workshop.
[0072] Based on the above embodiments of wheelchair adjustment rod manufacturing and processing equipment, a method for processing wheelchair adjustment rods is provided, which is applied to wheelchair adjustment rod manufacturing and processing equipment, such as... Figure 2 As shown, the process includes the following steps: S1, feeding and guiding: the feeding and guiding assembly feeds the wheelchair adjustment rod into the processing position and performs axial guidance; S2. Size recognition: The intelligent sensing system collects the diameter D and / or ellipticity E and / or runout T of the wheelchair adjustment rod; S3, Adaptive clamping and positioning: The controller generates clamping spacing and clamping force F set values according to D, E and / or T, drives the first clamping member and the second clamping member to close and controls the linkage positioning mechanism to perform axial limiting; S4. Adaptive Grinding: The drive and transmission mechanism drives the grinding component to run and drives the wheelchair adjustment rod to rotate. The controller sets the grinding angle θ and contact pressure P according to D, E and / or T, and dynamically corrects θ and / or P according to the grinding status parameters during the grinding process. S5. Dust removal: Simultaneously activate the dust removal components to perform negative pressure dust removal in the grinding contact area to capture and filter dust. S6. Unloading: After the wheelchair adjustment rod is polished, the positioning clamping assembly releases the clamp and axial positioning, and outputs the wheelchair adjustment rod.
[0073] Among them, the grinding status parameters in S4 include at least one of the following: the grinding drive motor current I of the grinding component, the vibration value V of the wheelchair adjustment rod, the dust concentration C of the dust removal component, or the surface roughness characterization parameter R of the wheelchair adjustment rod; when I, V, C, or R deviate from the preset threshold, the controller performs at least one linkage adjustment: adjusting the clamping force F, adjusting the grinding angle θ, adjusting the grinding speed, adjusting the rotation speed of the wheelchair adjustment rod, or triggering a stop alarm, thereby ensuring the quality consistency of batch processing of wheelchair adjustment rods and reducing dust escape.
[0074] During application, each step is executed sequentially from S1 to S6. Through control logic encompassing dimension recognition, clamping closed-loop, rotary grinding, status monitoring, and dynamic correction, a complete closed-loop system is formed during the processing. By monitoring current I, vibration value V, dust concentration C, or roughness parameter R, parameters can be automatically adjusted or an alarm can be triggered to stop the machine in case of abnormalities. This ensures consistent product quality in batch processing of wheelchair adjustment rods, reduces the risk of dust escape, and solves the problems of delayed manual intervention and quality fluctuations.
[0075] In addition, preset modes for different specifications of processing programs can be added to the controller; quality data records can be automatically generated after processing is completed; and the dynamic correction logic can be controlled by table lookup, empirical model or simple algorithm.
[0076] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described.
Claims
1. A wheelchair adjustment rod manufacturing and processing equipment, characterized in that, Includes a feeding and guiding assembly mounted on the frame, used to feed the wheelchair adjustment rod to be processed into the processing position and maintain axial guidance; A positioning and clamping assembly is provided at the processing position for clamping and positioning the wheelchair adjustment rod to limit radial sway and / or axial movement; A polishing assembly, located at the processing position, is used to polish the outer surface of the wheelchair adjustment rod; An adaptive adjustment mechanism, connected to the positioning clamping assembly and / or the grinding assembly, is used to automatically adjust the clamping distance, clamping force and / or grinding angle according to the actual size parameters of the wheelchair adjustment rod; The intelligent sensing system is used to collect the size parameters and / or polishing status parameters of the wheelchair adjustment rod, and output adjustment commands in conjunction with the controller; A drive and transmission mechanism for driving the grinding assembly to move and driving the wheelchair adjustment rod to rotate and / or convey; A dust collection component is located in the dust generation area of the grinding component and is used to collect the grinding dust generated during the grinding process and transport it to the dust collection unit. The controller generates the clamping force and the polishing angle based on the size parameters, and dynamically corrects the clamping force and / or the polishing angle based on the polishing state parameters during the polishing process, so that the wheelchair adjustment rod is uniformly polished under a stable clamping state.
2. The wheelchair adjustment rod manufacturing and processing equipment according to claim 1, characterized in that, The positioning and clamping assembly includes a first clamping member and a second clamping member arranged opposite to each other, forming a clamping plate-type fitting structure; at least one of the clamping members is opened and closed with adjustable distance via the adaptive adjustment mechanism, and the clamping contact surface of the clamping member is an arc-shaped pad or a flexible covering layer, used to fit the outer surface of the wheelchair adjustment rod of different diameters.
3. The wheelchair adjustment rod manufacturing and processing equipment according to claim 2, characterized in that, The positioning and clamping assembly is provided with a linkage positioning mechanism. During the closing process of the first clamping member and the second clamping member, the linkage positioning mechanism synchronously drives the end stop or the lateral limiting member to abut against the end and / or the step of the wheelchair adjustment rod, so as to perform axial positioning of the wheelchair adjustment rod and suppress axial movement.
4. The wheelchair adjustment rod manufacturing and processing equipment according to claim 1, characterized in that, The grinding assembly is a belt grinding unit and / or a grinding wheel grinding unit. The grinding assembly is mounted via a swing bracket or a universal hinge seat to adjust the grinding angle under the drive of the adaptive adjustment mechanism. Furthermore, the grinding assembly is equipped with a pressing follow-up mechanism to maintain the grinding contact pressure within a set window.
5. The wheelchair adjustment rod manufacturing and processing equipment according to claim 1, characterized in that, The intelligent sensing system includes a size detection unit, which is one or more of a laser rangefinder, a structured light vision measurement component, and a contact displacement sensor, used to detect at least the diameter D, ellipticity E, and / or surface runout T of the wheelchair adjustment rod. The controller generates the set values for the clamping distance and the grinding angle based on D, E, and / or T.
6. The wheelchair adjustment rod manufacturing and processing equipment according to claim 1, characterized in that, The adaptive adjustment mechanism includes an actuator and a feedback unit. The actuator is one or more of a servo motor with a lead screw, a linear electric cylinder, or a pneumatic-hydraulic booster cylinder. The feedback unit includes a force sensor and / or a displacement sensor, used to provide closed-loop feedback on the clamping force F and / or clamping displacement S, so that the clamping force F is kept within a preset window range.
7. The wheelchair adjustment rod manufacturing and processing equipment according to claim 1, characterized in that, The drive and transmission mechanism includes a rotary drive unit. The rotary drive unit drives the wheelchair adjustment rod to rotate around its own axis by clamping the end of the wheelchair adjustment rod with a clamping end, or drives the wheelchair adjustment rod to rotate around its own axis by contacting the surface of the wheelchair adjustment rod with a roller friction wheel, so that the grinding assembly can perform circumferential uniform grinding on the outer peripheral surface of the wheelchair adjustment rod.
8. The wheelchair adjustment rod manufacturing and processing equipment according to claim 1, characterized in that, The dust removal assembly includes a dust collection hood surrounding the grinding contact area between the grinding assembly and the wheelchair adjustment rod, a negative pressure suction pipe connected to the dust collection hood, and a dust collection unit connected to the negative pressure suction pipe. The opening of the dust collection hood faces the contact area between the wheelchair adjustment rod and the polishing assembly, and is provided with an adjustable opening gap to accommodate wheelchair adjustment rods of different diameters. The dust collection unit includes a cyclone separation structure and / or a filter cartridge filtration structure.
9. A method for processing a wheelchair adjustment rod, applied to the wheelchair adjustment rod production and processing equipment according to any one of claims 1 to 8, characterized in that, The process includes the following steps: S1, feeding and guiding: the feeding and guiding assembly feeds the wheelchair adjustment rod into the processing position and performs axial guidance; S2. Size recognition: The intelligent sensing system collects the diameter D and / or ellipticity E and / or runout T of the wheelchair adjustment rod; S3, Adaptive clamping and positioning: The controller generates clamping spacing and clamping force F set values according to D, E and / or T, drives the first clamping member and the second clamping member to close and controls the linkage positioning mechanism to perform axial limiting; S4. Adaptive Grinding: The drive and transmission mechanism drives the grinding component to run and drives the wheelchair adjustment rod to rotate. The controller sets the grinding angle θ and contact pressure P according to D, E and / or T, and dynamically corrects θ and / or P according to the grinding status parameters during the grinding process. S5. Dust removal: Simultaneously activate the dust removal components to perform negative pressure dust removal in the grinding contact area to capture and filter dust. S6. Unloading: After the wheelchair adjustment rod is polished, the positioning clamping assembly releases the clamp and axial positioning, and outputs the wheelchair adjustment rod.
10. The method for processing a wheelchair adjustment rod according to claim 9, characterized in that, The grinding state parameters in S4 include at least one of the following: the grinding drive motor current I of the grinding assembly, the vibration value V of the wheelchair adjustment rod, the dust concentration C of the dust removal assembly, or the surface roughness characterization parameter R of the wheelchair adjustment rod. When I, V, C, or R deviate from the preset threshold, the controller performs at least one linkage adjustment: adjusting the clamping force F, adjusting the grinding angle θ, adjusting the grinding speed, adjusting the rotation speed of the wheelchair adjustment rod, or triggering a stop alarm, thereby ensuring the quality consistency of the batch processing of the wheelchair adjustment rod and reducing dust escape.