258 results about "Surface finishing" patented technology

The invention relates to the technical field of stainless steel production and manufacturing, and discloses a high-strength corrosion-resistant duplex stainless steel shaft forging method which comprises the steps of blank preparation, homogenization treatment, preheating treatment, multidirectional forging, interrupted cooling, solution treatment, aging treatment and surface finish machining. Uniformity of components in the blank and consistency of temperature distribution are guaranteed, a uniform microstructure basis is provided for subsequent forging, meanwhile, grains are refined through large deformation and multi-pass deformation in multi-directional forging, the strength and toughness of the shaft are improved, brittle phase formation is avoided, and the mechanical property is optimized; by interrupting cooling and solution treatment, controlling the cooling rate and heating parameters in real time, inhibiting harmful phase precipitation and optimizing the austenite-ferrite phase proportion, the shaft has high corrosion resistance, and by means of aging treatment, through a stable structure, the long-term durability of the shaft in a severe environment is guaranteed, and the corrosion weight loss and pitting corrosion risk are reduced.

The invention relates to the related technical field of die casting machining, and discloses an automatic die casting machining device which comprises an automatic machining box set, a punching mechanism, a surface finishing mechanism, an edge treatment mechanism and a driving mechanism. The driving mechanism comprises a bidirectional driving unit and a one-way variable-speed transmission unit; the device further comprises a positioning platform, a power conversion mechanism, a surface finishing control mechanism, an edge processing transmission mechanism and an edge processing control mechanism. Different metal processing combinations are automatically controlled to operate by a single driving mechanism, the operation is stable, multiple metal processing operations with different properties are integrated, multiple processes are completed through one-time clamping, and collaborative innovation that different metal processing is synchronously performed while high efficiency and energy conservation are achieved is achieved; and the production efficiency of specific die castings which are relatively fixed and regular in structure and need to be produced on a large scale is effectively improved.

The present disclosure relates to compositions, assemblies, systems and methods for surface finishing, e.g., smoothing and polishing electrically conductive parts (e.g., metals or metal parts), e.g., via ion transport by means of said compositions, also referred herein as Magnetic Dry Electrolytes (MDEs), comprising free solid bodies retaining a liquid electrolyte used in combination with magnetic particles and / or magnetic fields. Thereby, the free solid bodies retaining the liquid electrolyte may be made magnetically active. The presence of the magnetic particles and / or magnetic fields presents a wide range of possible application, e.g., regarding the control and synchronization of the electrically conductive free solid bodies motion, packing factor and the electrochemical pulses and properties of the particles and the surface treatment, e.g., surface finishing, on which they are used, including the smoothing and polishing of electrically conductive parts, e.g., metal parts, for example punches, gears or inner channels (e.g., metal parts with inner channels).

The invention provides a torque arm part clamping device and method. The torque arm part clamping device comprises a base plate, a clamp and a cushion block assembly. The clamp comprises a first base, a pressing plate and a pressing rod, one end of the pressing rod is connected to the first base, and the other end of the pressing rod is connected to the pressing plate so that the pressing plate can apply pressure. The two clamps are symmetrically arranged in the X direction, and an acute angle is formed between the two first bases. The multiple cushion block assemblies are arranged between the two clamps, and the multiple cushion block assemblies are arranged in the Z direction; the cushion block assembly comprises a second base and at least one ejector rod connected to the upper end of the second base in a threaded mode. The first base and the second base are installed on the base plate. The online measuring system of the machine tool is utilized, the thought of automatic, reliable and efficient alignment and judgment is achieved, the B shaft of the part is rapidly aligned, it is guaranteed that the allowance of all end faces, namely holes, is uniform, and the tool connecting problem of appearance machining and end face finish machining is solved.

The invention relates to a vibration-free concrete surface finishing, wiping, pressing and finishing device which comprises a vehicle body and at least two tire sets installed on the vehicle body, and each tire set comprises two tires which are coaxially arranged. The crawler belt is used for connecting the at least two tire groups in a transmission manner; the wiping and pressing blades uniformly cover the outer surface of the crawler belt in the transmission direction of the crawler belt; the buffer part is used for reducing disturbance of the plastering and pressing blade to the surface of concrete in the plastering and pressing process, one end of the plastering and pressing blade is hinged to the outer surface of the crawler belt, and the other end of the plastering and pressing blade is connected to the outer surface of the crawler belt through the buffer part. The contact area with the concrete surface is increased in the mode that the wiping and pressing blade is arranged on the crawler belt, meanwhile, the wiping and pressing blade is connected with the crawler belt through the buffering piece, disturbance of the wiping and pressing blade to the concrete surface during wiping is reduced, and the construction quality is improved.

The utility model discloses a valve rod surface accurate grinding device which comprises a device body, a grinding wheel is rotatably connected between the inner walls of the device body, a transmission assembly is arranged in the device body and used for driving the grinding wheel to rotate, and a base is slidably connected between the inner walls of the device body. The telescopic electric cylinder drives the first positioning block to move on one side of the first connecting block, the valve rod abuts against the second positioning block on one side of the second connecting block, installation of the valve rod is completed, then the transmission assembly drives the grinding wheel to rotate between the inner walls of the device body, and meanwhile the displacement assembly drives the displacement plate to move on the top of the base. And chippings generated in the accurate grinding process are sucked into a dust suction box through a dust suction fan along a dust suction opening in the first time, and are collected and treated through a dust collection frame between the inner walls of a dust collection groove, so that the accurate grinding efficiency of the surface of the valve rod is improved, and the safety of the accurate grinding device is improved.

The invention discloses PVC plate surface finish machining equipment which comprises a conveying roller, a conveying belt and a machining frame, a polishing execution system is arranged in the machining frame and comprises a multi-degree-of-freedom driving device and a polishing execution assembly, and the polishing execution assembly is borne and driven by the multi-degree-of-freedom driving device. The polishing execution assembly comprises a third motor, a polishing assembly, a dust cover and a dust collection box, the output end of the third motor is fixedly connected with the polishing assembly, and the dust collection box is detachably arranged on the bottom surface of the dust cover; and generated dust is actively captured and collected in the polishing process through the polishing execution assembly. By designing the structure of the closed dust cover synchronously rotating along with the polishing wheel and the built-in vortex ring, a dynamic dust capturing cavity is formed at the moment of a polishing point, the mode of passively depending on external large-air-volume dust collection is fundamentally changed, and low-energy-consumption and high-efficiency dust capturing and collecting from the source are achieved.

The invention discloses a wafer precision grinding method based on laser subsurface modification softening, and belongs to the technical field of semiconductor manufacturing. The method is used for carrying out final damage layer removal and surface finish machining on the hard and brittle wafers (such as silicon carbide and diamond) subjected to preliminary mechanical polishing. The method comprises the following steps: (1) detecting the depth of a damaged layer on the subsurface of a wafer; (2) focusing ultrafast laser on the subsurface of the wafer, scanning to form a continuous and compact softened modified layer, controlling the modified layer to extend upwards in the vertical direction, so that the modified layer covers most of the volume of the material to be removed, and only retaining a micron or submicron original hard thin layer on the top layer of the wafer; (3) carrying out nondestructive testing on the modified layer; and (4) an ultra-precision grinding process (such as CMP or PAP) is adopted, the supporting weakening effect of the modified layer on the top hard thin layer and the characteristic that the modified layer is easy to remove are utilized, and all the to-be-machined allowances are rapidly removed at a time. According to the method, on the premise that the high-quality surface is not damaged, the finish machining efficiency of the superhard material is remarkably improved through the mechanism of internal softening and top layer collapse removal.

1. Name of the product in this design: Ice Surface Repair Vehicle. 2. Purpose of this design: for ice surface finishing. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses a multi-stage composite sand cleaning method and system for investment casting of a narrow inner cavity casting, and relates to the technical field of investment casting, the method comprises the following steps: S1, primary shot blasting cleaning is carried out to remove floating sand on the outer surface of the casting and a shallow inner cavity, and a deep sand inlet is exposed; s2, inner cavity impact sand loosening is conducted, specifically, a sand body blocked in the deep portion of the inner cavity of the casting cracks and loosens through pneumatic impact; s3, ultrasonic vibration sand removal is conducted, specifically, the casting is installed on a special tool, loose sand grains are stripped from the inner cavity wall through ultrasonic vibration output by an ultrasonic generation unit, and a tuning control module is arranged to conduct real-time scanning on the casting and adjust the frequency of the ultrasonic vibration so as to be matched with the local resonance frequency of the inner cavity of the casting; s4, secondary shot blasting finishing is conducted, falling residual sand in the casting is removed, and surface finishing is achieved; and efficient, thorough and damage-free sand removal of sand grains in narrow, bent and deep inner cavities of the casting is realized through the multi-stage sand removal step.

This invention belongs to the field of ceramic building materials, specifically relating to a surface decoration treatment method combining directional etching ink with marble slabs. The surface decoration treatment method includes: applying a base glaze to the surface of a ceramic body; inkjet printing a natural stone design pattern onto the glazed surface using conventional ceramic ink; inkjet printing directional etching ink onto the glazed surface; applying a decorative glaze containing a covering glaze onto the glazed surface; and firing the glazed ceramic body. This invention uses a special functional ink containing low-temperature frit to pre-penetrate and etch the marble slab, then inkjet prints it in specific locations matching the design, creating a relatively matte, frosted effect with downward concavity in specific areas.

To provide improved surgical instruments. [Solution] Surface preparation of sliding surfaces can improve the wear performance of surgical instruments such as surgical staplers, which include a reusable mechanism that is used multiple times with a single-use reloadable cartridge. A combination of surface hardening, surface finishing, and surface coating can be applied to the metal components of surgical instruments to reduce the possibility of abrasive wear in metal-to-metal sliding engagements. Surface hardening technology can enable further manufacturing operations such as welding without compromising the strength of the underlying metal substrate. With stainless steel metal substrates, surface hardening or surface hardening technology may reduce corrosion resistance, so a surface coating can be added to suppress surface oxidation and to provide a barrier against metal-to-metal contact. Further lubricating coating layers, such as a brazing coating layer, can enhance abrasion resistance.

The application provides a tantalum-based alloy and a preparation method thereof. The preparation method of the tantalum-based alloy comprises the following steps: sequentially laying a first mixed material, a second mixed material and magnesium chips in a reaction crucible in a top-down direction, igniting the reaction crucible to generate an aluminothermic reduction reaction, and then sequentially performing a temperature reduction treatment and a surface finishing treatment to obtain the tantalum-based alloy. The first mixed material comprises aluminum particles, tantalum pentoxide, titanium oxide, potassium chlorate and aluminum fluoride. The second mixed material comprises aluminum particles, tantalum pentoxide, titanium oxide, potassium chlorate, aluminum fluoride and calcium fluoride. By adopting double dosing and covering the magnesium chips with the upper material, the application improves the ignition efficiency, significantly improves the material loss caused by the slow ignition speed and insufficient ignition of the material in the traditional off-oven method, and introduces a titanium source to form an AlTaTi compound, thereby significantly enhancing the alloy uniformity.

The invention relates to the technical field of mold flattening processing, in particular to an EPS mold surface flattening processing treatment device which comprises a rack, a grip support, a control panel, a driving box, a vibration polishing mechanism, a polishing head, a dirt suction head, a spray head, a dirt suction support, a transmission box, a dirt suction mechanism, an exhaust barrel, a liquid storage barrel, a linkage box, a liquid spray mechanism and a pump body. The polishing heads of various special-shaped structures can be driven to vibrate at high frequency through the vibration grinding mechanism, polishing grinding can be conveniently conducted on the inner corners of the mold, stains on the rear side areas of the polishing heads can be adsorbed through the dirt suction mechanism, part of devices can suck and collect the stains generated after the mold is ground in time, and the polishing efficiency of the mold is improved. And polishing liquid can be sprayed to the front side area of the polishing head through the liquid spraying mechanism, a large amount of polishing liquid is effectively prevented from being attached to the surface of the mold for a long time, and the high efficiency, cleanliness and protection performance of the device are improved.

The invention discloses medical forceps constructed based on multi-material 3D printing and a preparation method of the medical forceps. Comprising the following steps: based on medical image data of a patient or a standard instrument model, carrying out personalized design through computer aided design software, and constructing an integrated three-dimensional digital model; then topological optimization is carried out, a weight reduction structure is designed in a non-key stress area, and slicing software is used for processing and generating a multi-material printing instruction file; then, multi-material 3D printing equipment is adopted, according to a preset material distribution scheme, materials with different mechanical properties are used for synchronously and integrally printing in the areas of the clamp beaks, the movable joints and the clamp handles, and a clamp green body is manufactured; and finally, carrying out cleaning, key part surface finish machining and sterilization treatment to obtain a final product. Matched forceps can be rapidly designed and manufactured according to special operation requirements, multiple materials with different properties are integrated on the same instrument, and the operation precision and effect are improved.

The utility model belongs to metal surface finishing technology field especially, and is especially related to a polishing machine's vibration swing eccentric mechanism. This vibration swing eccentric mechanism includes eccentric mechanism and mounting mechanism, and the eccentric mechanism includes eccentric shaft connecting disc, and the upper end of eccentric shaft connecting disc is provided with adjusting groove, and the inside of adjusting groove is rotatably connected with screw rod, and the screw rod is threadedly connected with sliding block, and the top of sliding block is fixedly installed with connecting seat, and the upper end center of connecting seat is fixedly installed with connecting screw rod, and the both sides of adjusting groove are provided with sliding slot, and the both sides of sliding block are slidably connected with sliding slot. The mounting mechanism includes mounting disc, and the bottom of eccentric shaft connecting disc is provided with mounting disc, and the bottom center of mounting disc is fixedly installed with shaft coupling. The utility model is guided by sliding slot through the thread transmission of screw rod and sliding block, realizes the accurate adjustment of eccentric distance, can adapt to the vibration swing demand of different polishing technology, and improves the precision and convenience of polishing machine eccentricity adjustment.

The application relates to the technical field of metal material processing, in particular to a rolling forming process of an aluminum composite plate, which comprises the following steps: S1, surface pretreatment of the aluminum composite plate; S2, accurate clamping and positioning; S3, applying directional pressure and material flow guiding to the aluminum composite plate through a multi-station continuous rolling forming device; S4, multi-pass progressive rolling and local thickening; S5, cooling, shaping, surface finishing and nondestructive testing. The application has the following effects: the multi-station continuous rolling device applies radial and axial pressure, drives directional flow of the material, realizes local accumulation and thickening through multi-pass progressive rolling, realizes the local strengthening effect of on-demand material distribution according to the principle of invariable volume, reduces the waste of the material in the aluminum composite plate processing process, improves the material utilization rate, and reduces the production cost.

The utility model discloses a soft magnetic ferrite core surface finishing device, which relates to the technical field of magnetic core production and comprises a base and a support plate, electric cylinders are mounted on two sides of the bottom of the support plate, output ends of the electric cylinders are connected with a support disc through extension rods, and an inner ring of the support disc is connected with a transmission wheel. Through the arrangement of the polishing disc, the sleeve, the bonding layer, the polishing abrasive paper, the electric cylinder, the supporting disc, the transmission wheel and the first transmission groove, the surface of the ferrite core body can be conveniently polished and trimmed through the arrangement of the polishing disc; when an inner ring of an annular ferrite core body needs to be polished and trimmed or a gap of an E-shaped ferrite core body needs to be polished and trimmed, the output end of an electric cylinder drives a supporting disc to move upwards through an extension rod, the supporting disc moves upwards to drive a polishing disc to move upwards through a transmission wheel, and therefore polishing abrasive paper leaks out of the bottom of the polishing disc; the polishing head does not need to be disassembled or replaced or replaced to another polishing device, and operation is easy and convenient.

The invention relates to the field of grinding wheel dressing, in particular to a novel binder accurate grinding roller grinding wheel and a surface dressing method.The device adopted in the surface dressing method comprises a rack, a control table and a grinding wheel frame are fixedly arranged at the upper end of the rack, a grinding wheel cover is fixedly arranged on one side of the grinding wheel frame, and a grinding wheel body is rotationally installed in the grinding wheel cover; a driving motor is fixedly arranged at the bottom of the rack and is in transmission connection with the grinding wheel body through a reduction gearbox, a first sliding table is fixedly arranged at the upper end of the rack, a second sliding table is slidably installed on the first sliding table in a matched mode, a dressing table is slidably installed at the upper end of the second sliding table in a matched mode, a clamping base is fixedly arranged on the dressing table, and a dressing pen is fixedly clamped in the clamping base. The progressive machining and finishing process combining rough finishing and fine finishing can be achieved on the grinding wheel body, operation is easy, finishing precision is high, the vibration problem can be thoroughly solved according to feedback data of vibration detection, and finishing quality can be improved.

The invention discloses an automatic plastering device and method for a pipeline connector. The automatic plastering device comprises a rail, a walking mechanism, a storage bin, a pressurizing mechanism and a discharging mechanism. The track is installed on a pipeline, and the walking mechanism is movably installed on the track and can move around the pipeline along the track. The storage bin is fixedly installed on the walking mechanism, and the pressurizing mechanism is arranged in the storage bin and used for conveying mortar in the storage bin. The discharging mechanism is connected with the storage bin and used for receiving the mortar conveyed by the pressurizing mechanism and smearing the mortar to the pipeline connector. According to the device, plastering and surface finishing can be automatically conducted on the pipeline connector, the construction quality of plastering is guaranteed, and the overall strength and sealing performance of the pipeline connector are improved.

This invention discloses a production line and equipment for surface correction of electro-galvanized steel wire, relating to the field of surface correction technology for electro-galvanized steel wire. It includes a functional box, a robotic arm, and a first clamping cylinder. A first servo motor is housed in a protective shell at the top of the outer wall of the functional box. The first servo motor is connected to the robotic arm via a rotating shaft. The robotic arm is connected to a first cylinder via a connecting rod. A first drawing die is mounted on the side of the outer wall of the first cylinder. A second servo motor inside the first cylinder is connected to a transmission shaft via a helical gear set. The transmission shaft is connected to the first clamping cylinder via threads on the outer wall. This invention, by installing a functional box, robotic arm, first cylinder, first clamping cylinder, limit ring, first servo motor, and second servo motor, achieves rapid and safe replacement of the drawing die, avoiding direct contact between workers and the high-temperature die, eliminating the risk of burns, greatly improving production efficiency and safety, and ensuring product quality stability.

The invention discloses an integrated forming process for a water cup mouth cover. The integrated forming process comprises the following steps that firstly, a plastic base material is formed; 2, inspecting the plastic base material; step 3, brushing a special primer on the joint surface; 4, baking and curing the primer; step 5, injecting silica gel for integral molding; step 6, carrying out edge removal treatment on the crude product; 7, water boiling purification treatment; 8, removing the supporting column and finishing the surface; step 9, comprehensive inspection of a finished product; and step 10, packaging and delivering finished products. According to the invention, through plasma activation treatment of the plastic base material bonding surface, micro-texture design of a mold cavity, use of a food-grade special primer and gradient baking curing, dual combination of physical occlusion and chemical bonding is constructed, the bonding strength of plastic and silica gel is greatly improved, stripping test verifies that the bonding surface is free of stripping and falling phenomena, and the bonding strength of the plastic and the silica gel is greatly improved. Even in long-term use, repeated opening and closing or high-temperature and low-temperature environments, the stable combination effect can still be kept.

1. The name of the design product: precision turning and tapping integrated tool. 2. The use of the design product: used for precision machining and tapping on the surface of workpiece. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: front view.

The application relates to the technical field of fiber product processing, and particularly relates to a fiber product surface finishing device which comprises a processing table, a polishing device, a polishing support assembly and a feeding assembly. The polishing device is connected with the processing table through the polishing support assembly, the feeding assembly is arranged on the processing table and feeds the fiber product. The polishing support assembly comprises a supporting guide rail, a guide sliding block, a mounting horizontal rod, a shock-absorbing spring, a buffer seat and a sliding block driving member. The supporting guide rail is fixedly connected with the processing table, the guide sliding block is slidingly connected with the supporting guide rail, the mounting horizontal rod is fixedly connected with the polishing device and fixedly connected with the guide sliding block, the two sides of the shock-absorbing spring abut against the guide sliding block and the supporting guide rail respectively, the buffer seat is connected with the guide sliding block, and the sliding block driving member is arranged on the supporting guide rail and drives the guide sliding block to move, so that the polishing device can float along with the ups and downs of the fiber product during polishing, and the polishing device is prevented from being damaged.

The invention relates to the technical field of additive and subtractive integrated intelligent manufacturing, and discloses an intelligent manufacturing system and method for coaxial feeding, stirring and friction solid-phase additive-subtractive machining integrated equipment. And efficient additive deposition and precise subtractive machining can be achieved on one equipment platform. A metal material is fed into a friction stir head through a coaxial feeding device, surface finishing and surface layer removal are carried out through a material reducing module while additive manufacturing is carried out through solid heating and plastic deformation technologies, surface, interlayer and internal structure performance regulation and control are carried out in combination with needle-free friction stir treatment and synchronous induction heating rolling, and the mechanical property of the metal material is improved. The problems of precision, surface quality and production efficiency which cannot be independently achieved through single additive manufacturing or subtractive machining are solved, efficient utilization of materials can be achieved in manufacturing of high-performance and large complex structural parts through the additive and subtractive composite technology, and meanwhile the forming precision and the mechanical property are guaranteed.

The utility model discloses a pitched roof concrete vibrating and smoothing device, which belongs to the technical field of building construction appliances and comprises a mounting frame, two face smoothing wheels are arranged below the mounting frame and are arranged in parallel front and back, and a vibrating plate is arranged between the two face smoothing wheels. A lifting mechanism used for driving the vibrating plate to work is arranged above the vibrating plate, a driving mechanism used for driving the noodle collecting wheel to rotate and the lifting mechanism to work is further arranged on the mounting frame, a telescopic rod is arranged on the mounting frame through a connecting frame, and an operating handle is arranged at the top end of the telescopic rod. According to the concrete surface finishing machine, the motor is used for driving the two surface finishing wheels to roll on the concrete surface to carry out concrete surface finishing operation; and meanwhile, the vibrating plate is driven to perform surface vibrating operation on the cement surface, so that the concrete surface is vibrated and polished, the construction operation is simple, the progress of vibrating and surface finishing of workers is greatly improved, the construction period is guaranteed, the labor cost is saved, the concrete appearance quality is improved, and very high practicability is achieved.

The utility model belongs to the technical field of auxiliary engineering cast-in-place slip-form construction, and particularly relates to a secondary surface finishing device for slip-form construction of a road shoulder plate and a shallow butterfly-shaped side ditch, which comprises a vehicle frame which is positioned above a slip-form construction completion part and is of a rectangular frame structure, and two ends of the vehicle frame extend to the outer side of the slip-form construction completion part; the four walking wheels are arranged at the four corners of the vehicle frame correspondingly, when the four walking wheels are parallel to the construction direction of the slip form, the vehicle frame can be supported to move on the ground, and when the front walking wheel and the rear walking wheel on the same side are in a splayed state, the vehicle frame can be locked to the ground; the wheel control structure is mounted on the frame and can control switching of two states of the traveling wheels; the supporting structure is fixedly mounted above the frame; and the top of the trowelling structure is clamped with the supporting structure, and the bottom of the trowelling structure extends to the position below the frame and can be attached to the construction completed part of the slip form. The secondary trowelling device has the advantage that secondary trowelling and surface finishing can be carried out on an area needing trowelling according to construction conditions.

The invention discloses a high-heat-resistance and anti-fouling TPO (thermoplastic polyolefin) automobile interior composite material and a preparation method, relates to the technical field of automobile interior layered artificial leather materials, and aims to meet the requirements of light-color TPO automobile interior materials on heat resistance and anti-fouling performance at the same time. The TPO compact layer comprises the following components: a bio-based material, modified TPO particles, modified polypropylene, nano calcium carbonate, glass beads, a hindered amine light stabilizer, a phosphite ester compound, montmorillonite, nano silicon dioxide, a pigment and polyethylene wax. Two surface coating layers are coated on one surface, and the first layer is prepared from matte resin, silicon dioxide, graphene and nano clay; the second layer comprises bright type resin, semi-bright type resin, an auxiliary agent, a cross-linking agent and water, a fluorine-containing surfactant is adsorbed on the surface of the second layer, and a surface covering layer of a fluorine-containing chain segment is formed; and polypropylene foam is attached to the other surface. The light-color TPO automobile interior composite material can meet the heat resistance, and has the capabilities of resisting pollution and being easy to clean at the same time.

A method for annealing lenses made of plastic material is disclosed, as well as a method for manufacturing lenses made of plastic, the method including the annealing method, wherein the annealing method is performed on a lens obtained by casting or injection molding of plastic material prior to lens finishing steps (such as surface finishing).

This utility model relates to the field of concrete finishing technology, and in particular to a concrete surface finishing device. The device includes a support rod, which comprises a fixed rod, an extension rod telescopically installed within the fixed rod, a telescopic assembly installed between the extension rod and the fixed rod, and a trowel installed at one end of the extension rod; a connecting assembly, which includes a fixed frame fixed to one end of the extension rod, a rotating frame rotatably connected to the side wall of the fixed frame, and a rotating shaft rotatably installed between the rotating frame and the trowel; and an angle adjustment assembly. By incorporating the telescopic assembly and the angle adjustment assembly, the construction worker can quickly control the extension and retraction of the extension rod at the end of the support rod, achieving rapid length adjustment of the device. Furthermore, the construction worker can quickly and stably adjust the angle of the trowel in real time at the handheld end, greatly improving operational convenience. The adjusted trowel angle remains stable, preventing accidental slippage and improving construction accuracy and efficiency.