284 results about "Compression screw" patented technology

The invention relates to the technical field of machining, in particular to a bolt rod drilling clamp and method. The clamp comprises a bottom plate and a V-shaped block support; the V-shaped block support is mounted on the top surface of the bottom plate; a plurality of V-shaped grooves are formed in the top surface of the V-shaped block support and are sequentially arranged at intervals from left to right; a plurality of pressing blocks are installed on the top face of the V-shaped block support, and every two V-shaped grooves are correspondingly provided with one pressing block. The middle of each pressing block is installed through a pressing screw. According to the drilling method, the clamp is adopted for clamping a bolt product to be machined. The clamp can clamp a plurality of bolt products to be machined at a time, so that the drilling efficiency of bolt rod parts is improved. The V-shaped block support and the pressing block are used for limiting and pressing bolt products, stability is better, two bolt products can be pressed at the same time through one pressing plate, only the pressing screws need to be tightened during pressing, and compared with the prior art, operation is easy and convenient, and the purpose of rapid clamping is achieved.

The invention discloses a stacked multi-star release mechanism adopting modular components, which is characterized by comprising a base (1), a separation seat (2), a T-shaped pressing rod (3), a pressing rod control block (4), a large pressing rod (5), a stacking column (6), a pressing cover (7), a hinge (8), a pressure spring A (9), a push rod component (10) and a pressing screw (11). The separation seat (2), the hinge (8) and the push rod assembly (10) are all modular assemblies, are simple in structure and easy to assemble and produce, and can be compatible with stacking columns in various forms.

The electrolytic bath comprises two supporting end plates and further comprises a plurality of electrolytic frames, the electrolytic frames are evenly arranged between the two supporting end plates, thin sealing gaskets are arranged at the two ends of each electrolytic frame, and the thin sealing gaskets are arranged between the two supporting end plates. A cathode plate or an anode plate, a thick sealing gasket and a diaphragm assembly are sequentially arranged between the thin sealing gaskets of every two adjacent electrolysis frames from back to front, and the cathode plates and the anode plates are sequentially aligned and staggered from back to front; the two supporting end plates are connected through a plurality of pressing screw rods, and the distance between the two supporting end plates is shortened through the pressing screw rods, so that the electrolysis frames are pressed and sealed with one another; and meanwhile, thin sealing gaskets or thick sealing gaskets are arranged between the electrolysis frames and between the electrolysis frames and the supporting end plates, so that the electrolysis frames and the electrolysis frames as well as between the electrolysis frames and the supporting end plates can be effectively sealed, and the problem of liquid leakage or gas leakage is avoided.

An orthopedic fixation device (e.g., an intramedullary (“IM”) nail or bone plate) including a lag screw and a compression screw, the compression screw being nested with the lag screw. In accordance with one or more features of the present disclosure, the compression screw may include a partially non-threaded medial segment, an enlarged diameter, and / or a cannulated bore. In addition, and / or alternatively, the lag screw may be provided as an integrated assembly including a lag screw and an outer sleeve to enable the lag screw to telescope or slide relative to the outer sleeve and IM nail.

This application relates to a limiting type internal fixation device for femoral neck fractures, which includes a first fixing plate, a second fixing plate provided on the first fixing plate, positioning screws provided on the first fixing plate, compression screw holes provided on the first fixing plate, and positioning holes provided on the second fixing plate. The second fixing plate is not parallel to the first fixing plate. The positioning screws include a base and a screw body provided on the base. The screw body has telescopic movement in the axial direction and swinging movement in the circumferential direction. The number of positioning screws is two. The limiting type internal fixation device for femoral neck fractures disclosed in this application promotes fracture healing by providing slight sliding in the axial direction and ensures the accuracy of the healing position through micro-displacement and automatic reset in the circumferential direction, so as to avoid excessive shortening of the femoral neck and achieve accurate position healing, thereby obtaining high-quality fracture healing and functional recovery.

The invention discloses a battery assembling device. The battery assembling device comprises a conveying assembly, an assembling station and a first carrying assembly, a second carrying assembly, a delay positioning assembly, a pre-assembling assembly and a main body positioning assembly are arranged on the assembly station, the delay positioning assembly, the pre-assembling assembly and the main body positioning assembly are arranged at intervals, and the second carrying assembly is arranged above the delay positioning assembly, the pre-assembling assembly and the main body positioning assembly; the first carrying assembly is used for carrying the delay module and the pressing screw to the delay positioning assembly and carrying the main body assembled with the supporting block to the main body positioning assembly; the second carrying assembly is used for carrying the delay module and the pressing screw to the pre-assembling assembly in sequence; the pre-assembling assembly is used for clamping and positioning the delay module and then pre-assembling the pressing screw and the delay module; and the second carrying assembly is used for carrying the pre-assembled delay module and the pre-assembled pressing screw to the main body positioning assembly, so that the pre-assembled delay module and the pre-assembled pressing screw are assembled on the main body. By means of the mode, the problem that the pressing screw entering teeth are prone to deflection is solved.

The invention discloses a novel metal test piece end face polishing and grinding device which comprises a test piece chuck, a pressing device, a straight driven piece, a plane cam, a movable sliding block assembly body, a linear guide rail structure and a movable frame. The test piece chuck comprises a dovetail matching block, a test piece chuck block, a pressing screw and a chuck fixing screw. The pressing device comprises a cover plate, a compression spring, a lifting block, a threaded pin and a rolling bearing; the straight follower comprises a lifting block, an indexing block and a limiting screw. By means of the novel metal polishing and grinding device, the problem that after traditional manual polishing and grinding equipment conducts polishing and grinding, cambered surfaces and fillets appear on the polishing and grinding end face is solved, the yield of metallographic samples and the utilization rate of consumable items such as abrasive paper are increased, a linear one-way polishing and grinding mode is researched, developed and provided, and a novel semi-automatic mechanical polishing and grinding device is designed.

The utility model relates to a building construction platform based on building construction, which belongs to the technical field of building construction and comprises a base, and the top of the base is fixedly connected with a hydraulic rod. According to the building construction platform based on building construction, when a worker at the top of the supporting platform needs to be protected during construction, two protective ball covers are inserted into two fixing bases through connecting columns, and two movable blocks are attached to mounting grooves under extrusion; then the two extrusion screws are rotated to enable the protective ball covers on the tops of the two connecting columns to be in a supporting state, then the double-shaft motor is started to drive the two sliding blocks to move relatively, the two protective ball covers are in butt joint together, and a hemisphere is formed to protect the falling rocks; and when the falling stone hits the outer surface of the outer protection plate, the spring shock absorber and the limiting clamping rod can buffer the generated impact force, and when the protection ball cover is connected with the buffer rod, the danger generated by the falling stone is further reduced, and the personal safety of workers is guaranteed.

The utility model discloses a high-efficiency clamping tool for lead type PTC thermistor resistance test, which comprises a tool bottom plate, a tool top plate and a pressing type clamping device, the pressing type clamping device comprises a clamping bottom plate, a clamping top plate and a metal sheet, the clamping top plate is arranged below the tool bottom plate, and the metal sheet is arranged below the clamping top plate. One end of the clamping bottom plate is rotationally connected with one end of the clamping top plate, the clamping bottom plate and the clamping top plate are respectively provided with a strip-shaped through hole, a plurality of upper strip-shaped grooves are respectively formed in the positions, outside the two opposite sides of the strip-shaped through hole, of the lower surface of the clamping top plate, and a metal sheet with the corresponding shape is installed in each upper strip-shaped groove; the other end of the clamping bottom plate is connected with the other end of the clamping top plate through a compression screw, and all the metal sheets are led to the tool top plate through wires. According to the utility model, the pressing type clamping between the clamping bottom plate and the clamping top plate is adopted, so that the lead cannot be mechanically damaged, and the appearance of a product is better protected; and the strip-shaped through holes can ensure that all the thermistors can be immersed by the silicone oil.

The utility model provides a multifunctional mini breathing machine pipeline support which is characterized in that a base is of a first U-shaped structure, a first screw hole is formed in a side plate of the first U-shaped structure, and a compression screw is arranged in the first screw hole; one side plate of the first U-shaped structure is provided with at least one fixing groove, the other side plate of the first U-shaped structure is provided with at least one fixing groove, the bottom plate of the first U-shaped structure is also provided with at least one fixing groove, pipeline clamping blocks are clamped in the fixing grooves and comprise C-shaped structures, openings of the C-shaped structures are adjustable structures, and breathing machine pipelines are arranged in the openings of the C-shaped structures. The base of the first U-shaped structure is small in size, light in weight and easy to carry, can be fixed beside a bed of a patient or on an infusion rod anytime and anywhere, and can be used after being installed; fixation is firm, and bed-up and bed-down movement is facilitated; the opening of the pipeline clamping block is of an adjustable structure, the breathing machine pipeline is installed in the opening of the pipeline clamping block, the occupied space area is small, operation is not hindered, the breathing machine pipeline can move up and down along with the bed, and the safety coefficient is large.

The present invention provides a universal and / or convertible glenosphere and / or glenosphere shoulder joint replacement system and method. [Solution] An implant component is provided. The implant component includes one of a glenosphere component having a concave outer surface and a glenosphere component having a convex outer surface. The system may also include one of a first base plate having a central boss portion extending from the bottom surface and a central opening through which it is positioned, or a second base plate having a central boss portion extending from the top surface and a central opening through which it is positioned. An anchor boss having a central opening through which it is positioned is provided. The system may include a central compression screw configured to reliably compress the first base plate, the second base plate, or the anchor boss against the patient's bone by being fixed through the central opening.

The utility model discloses an optical path adjustable flow cell which comprises a flow cell cavity, two adjusting seats are oppositely arranged in the flow cell cavity, the two adjusting seats are both in threaded connection with the flow cell cavity, lenses are arranged at the opposite ends of the two adjusting seats, compression screws are arranged on the opposite sides, facing the flow cell cavity, of the lenses, and the compression screws are in threaded connection with the flow cell cavity. A connector is arranged at the tail end of the adjusting seat; the optical path adjusting device is simple in structure and reasonable in design, rotary fine adjustment of the optical path is achieved through threaded connection of the adjusting base and the flow cell cavity, the optical path can be adjusted without disassembling and assembling the flow cell, and convenience of experimental operation is improved. The lens and the cavity are directly matched and installed, the parallelism of the lens is ensured, and the detection precision is improved. In addition, a perfluoroether O-shaped sealing ring is adopted, so that the sealing performance is better, the corrosion resistance and the pressure resistance are stronger, and the stability and the reliability of equipment in a complex environment are ensured.

The invention relates to the technical field of electric energy meter wiring auxiliary equipment, and discloses a novel electric energy meter combined junction box, which comprises a junction box main body, guide raised lines arranged on the inner wall of the junction box main body and metal connecting pieces arranged between compression screws in a sliding manner, the metal connecting pieces are divided into a transverse metal connecting piece and a longitudinal metal connecting piece, and the transverse metal connecting piece and the longitudinal metal connecting piece are arranged at intervals in a staggered manner; by arranging the control mechanism and the driving mechanism, the manual and automatic dual control mode of the metal connecting piece is achieved, an operator can manually adjust the position of the metal connecting piece by rotating a button, and the metal connecting piece can be automatically controlled by rotating the button; the metal connecting piece can be automatically adjusted through a micro motor and a micro electric cylinder, operation is convenient and fast, applicability is high, and meanwhile through cooperation of multiple transmission modes such as gear transmission and bevel gear transmission, the precision and stability of metal connecting piece adjustment are improved.

This invention relates to the field of aircraft assembly technology and discloses an aircraft assembly lift, including a fixing assembly. The fixing assembly houses a first lifting assembly, and the first lifting assembly houses a fifth lifting assembly. The bottom of the fifth lifting assembly has a supporting foot, the top of which is fixedly installed to the bottom of the fixing assembly. The fixing assembly includes a fixed outer cylinder, an electrical unit fixedly connected to the outer side of the fixed outer cylinder, a support fixedly installed at the bottom of the fixed outer cylinder, a first cover fixedly connected to the outer side of the support, the outer side of the first cover fixedly installed to the outer side of the fixed outer cylinder, and a first gasket fixedly connected to the outer side of the support. This aircraft assembly lift uses four high-strength linear guides for its slide rails. When the lift is raised, it facilitates lateral drilling. When the lift is close to the aircraft fuselage or work frame, the handle can be rotated to tighten the screws and connect to the side interface.

The invention discloses a cylinder part water pressure detection tool, which comprises a compression screw, a base, a V-shaped sealing ring, a sealing cover, a fastening screw and a connector, and is characterized in that the compression screw is used for fixing the base on a hydraulic press workbench; the V-shaped sealing ring is mounted in the sealing grooves of the base and the sealing cover; the sealing cover and the connecting body are assembled and connected through a fastening screw; the connecting body is connected with the hydraulic press pressing sliding table, and the hydraulic press pressing sliding table is used for driving the connecting body and the sealing cover to move up and down; a to-be-detected cylinder part is installed between the base and the sealing cover, water is injected into an inner cavity of the cylinder part through the water inlet below the base, and under the action of water pressure, the V-shaped sealing ring is attached to the outer circle surface of the cylinder part to achieve sealing. And the V-shaped sealing ring is made of a rubber material. The problem that a sealing ring is short in service life and inconvenient to use during existing water pressure detection is solved.

The utility model relates to a clamping component for welding a garden cutter, which comprises a driving cylinder, a clamping component, a clamping component and a clamping component, and is characterized in that the driving cylinder is provided with a piston rod; the driving air cylinder is mounted on the base through a pin shaft; a first support plate and a second support plate, wherein the first support plate and the second support plate are both mounted on the base; the connecting piece is arranged between the first supporting plate and the second supporting plate, and the connecting piece is connected to the first supporting plate and the second supporting plate in a pivoted mode, so that the connecting piece can pivot relative to the first supporting plate and the second supporting plate; the pressing screw rod is installed on the connecting piece, and a nut is arranged at the end of the pressing screw rod; when a piston rod of the driving air cylinder stretches out and draws back, the connecting piece is driven to pivot relative to the first supporting plate and the second supporting plate, and therefore the pressing screw rod is driven to ascend and descend.

To provide a material testing machine capable of accurately reproducing pressing force required for clamping.SOLUTION: A material testing machine (1) includes: an actuator (30) for loading a test piece (TP); a support member (14) for supporting the actuator (30) or the test piece (TP) and supported by a shaft member (12); and a clamp mechanism (70) for clamping the support member (14) to the shaft member (12). The clamp mechanism (70) includes an elastic member unit (80) having an elastic member (83) which is previously elastically deformed in advance with a predetermined compressive force. By pressing the elastic member unit (80) with a pressing screw (76), the support member (14) is clamped to the shaft member (12).SELECTED DRAWING: Figure 2

The utility model discloses a lever type displacement sensor comprising an elastic body which is provided with two spaced and parallel deformation parts. Wherein one deformation part is provided with an inductance coil, the other deformation part is in threaded connection with an adjusting nail corresponding to the inductance coil, the inductance coil comprises a magnetic sleeve, the magnetic sleeve is installed in a through hole of the deformation part, a cylindrical framework is coaxially arranged in the magnetic sleeve, a magnetic core is arranged in the framework in a sliding fit mode, and one end of the adjusting nail abuts against the magnetic core. A reset spring is arranged between the two deformation parts, one deformation part is provided with a blind hole abutting against the reset spring, and the other deformation part is in threaded connection with a compression screw abutting against the reset spring. Mounting holes correspondingly penetrate through the lower portions of the two deformation parts, and threaded holes extending to the mounting holes are formed in the lower end faces of the deformation parts. The utility model has the advantages of very high resolution, higher stability, simple and reliable structure and convenience in installation, and is widely applied to the field of precision measurement.

The present invention discloses a fin-type heat exchanger with a shockproof structure and a manufacturing method thereof. The heat exchanger includes a heat exchange box and a shock-absorbing base plate. A guide rod and a compression screw are respectively installed on the top outer wall of the shock-absorbing base plate. A buffer spring is provided on the side wall of the guide rod. Sliding side plates are respectively installed on the two side walls of the heat exchange box. The guide rod and the compression screw are movably connected to the sliding side plates. A guide rod is respectively installed on the two side walls of the shock-absorbing base plate. A buffer spring is provided on the side wall of the guide rod. A buffer base is movably connected to the guide rod. A compression screw is respectively installed on the bottom of the buffer base. A T-shaped friction plate is movably connected to the compression screw. The present invention can adjust the shock-absorbing effect of the heat exchanger and can also make the air contact the heat exchanger more evenly, which is beneficial to the utilization of the heat energy of the heat exchanger.

The invention discloses an aero-engine low-pressure turbine working blade self-adaptive clamping device which is composed of a pneumatic pressure module, a positioning clamping module, a detection display module and a main body frame. The positioning clamping module provides six-point positioning and self-adaptive clamping functions and a pressure detection function, the detection display module is located on one side of the main body frame, and the detection display module detects pressure values of six-point sensors in the positioning clamping module in real time through a built-in lithium battery and six paths of pressure transmitters. A pneumatic pressure mechanism is used for replacing manual compression screws, and a self-adaptive mechanism is used for replacing manual adjustment. Compared with a conventional mechanical positioning and clamping mode, the novel clamp has the advantages of being convenient to use, high in clamping efficiency and short in machine tool waiting time. Therefore, the processing efficiency is effectively improved, and the production cost is reduced.

The invention provides an edge plate machining clamping device for a turbine guide vane of a gas turbine, and relates to the technical field of machining, a turbine guide vane to be machined is supported through a knife edge ruler and a ball head positioning pin arranged on an axial positioning seat, and main positioning and positioning in the in-out direction are achieved; an outer ring positioning seat, an outer ring pressing seat, a first guide pressing mechanism, a C-shaped pressing screw and a Z-shaped pressing plate are connected, and a lateral supporting force is applied in combination with an outer ring floating support, so that the turbine guide vane to be machined is tightly attached to a molded surface outer ring air inlet side positioning point; an inner ring positioning seat, an inner ring pressing seat, a first guide pressing mechanism, a C-shaped pressing screw and a Z-shaped pressing plate are connected, and in combination with an inner ring floating support, lateral supporting force is applied, so that the turbine guide vane to be machined is tightly attached to a molded surface inner ring air inlet side positioning point; and the blade body pressing seat, the limiting pin, the second guide pressing mechanism, the connecting rod and the check block apply downward pressing force, so that the main positioning surface of the turbine guide blade to be machined is tightly attached to the profile positioning point and the axial positioning point of the turbine guide blade.

The utility model belongs to the technical field of semiconductor process, and particularly relates to a vacuum furnace door for semiconductor process equipment, which comprises a furnace door body, the furnace door body is connected with a quartz tube through a vacuum flange, one side of the furnace door body far away from the quartz tube is connected with one end of a corrugated pipe, and the other end of the corrugated pipe is connected with a fixing plate. A fixing plate is arranged on the furnace door body, a pressing screw rod is installed on the fixing plate, and the fixing plate moves towards the direction close to the furnace door to enable the pressing screw rod to abut against the furnace door body. The corrugated pipe is arranged, and the fixing plate moves towards the direction close to the quartz tube, so that the furnace door body is driven to make contact with a vacuum flange on the quartz tube; and the furnace door body continuously and slowly moves towards the quartz tube, the corrugated pipe is compressed until the pressing screw presses the furnace door body, and the corrugated pipe also applies pressure towards the quartz tube to the furnace door body at the moment, so that the sealing performance between the quartz tube and the furnace door body is further improved.

The invention relates to an oil mill device for extracting oil from oil-containing seed material, comprising an oil mill with a tubular assembly (1), with a press barrel having an oil-containing seed material input with a tubular section (5), a tubular oil discharge (18), a tubular compression section (2) for oil-containing material, an oil-containing material output (65), an adjustable throttle (58) with an integrated heat exchanger (62), the press barrel accommodating a rotating compression screw (19) which is concentric to the press barrel (5), wherein the root diameter of the compression screw increases in the direction of travel from the oil-containing seed material input to the oil-containing material output (65).

The utility model provides a filter tip guide rail installation structure which comprises a guide rail assembly, a fixing base and a locking screw, the guide rail assembly comprises a front guide rail, a rear guide rail, two guide rail stand columns, two connecting stand columns, two pressing screws, a sliding plate and an installation plate, and the two connecting stand columns are oppositely arranged on the front side face of the installation plate; the fixing seat comprises a fixing plate and a supporting block, the fixing plate is parallel to the front guide rail, and the supporting block is arranged on the front side face of the fixing plate; the sliding plate is vertically arranged on the rear side face of the mounting plate, a sliding groove is formed in the bottom face of the sliding plate, a supporting face used for being in sliding fit with the sliding groove is arranged on the top face of the supporting block, and a mounting screw hole used for being matched with the threaded section of the locking screw is vertically formed in the supporting face. A U-shaped opening for the threaded section of the locking screw to penetrate through is formed in the left side of the sliding plate. According to the utility model, the efficiency of filter tip acceleration drum wheel maintenance operation can be improved, and the labor intensity of maintenance personnel is reduced.

The utility model discloses an automobile metal plate bending device which comprises an operation table and a frame body, the top of the operation table is connected with the frame body, the bottom of the operation table is connected with a supporting base, a rubber pad is embedded in the top of the operation table, the side face of the frame body is connected with a strip-shaped plate, and scale marks are arranged on the top of the strip-shaped plate. The inner side of the strip-shaped plate is slidably connected with a transverse plate. According to the automobile metal plate bending device, a strip-shaped plate is installed on the top of an operation table, a transverse plate is connected to the inner side of the strip-shaped plate in a sliding mode, a pressing screw rod and pressing plates are installed in a reinforcing plate, the pressing screw rods on the tops of the pressing plates are screwed, the pressing plates on the two sides are pressed on the top of a metal plate, and before the metal plate is bent, the pressing plates on the two sides of the strip-shaped plate are clamped; and plates of different specifications and sizes can be pressed tightly, and the plates of different lengths can be clamped and fixed conveniently in the using process.

The utility model relates to a roll insert cutter of indexable gear, and relates to a cylindrical gear processing cutter. The utility model solves the problems of traditional roll insert method, such as vertical installation, non-anti-upwarping and risk of loosening and falling during processing. The cutter body is in a circular structure, and the circumference of the cutter body is provided with uniformly arranged blade grooves. The roll insert cutter blade of hard alloy is arranged in the blade groove, and is pressed in the blade groove by a pressing screw. The blade is made into an inverted inclined surface, and the blade groove is made into a corresponding positioning form, so that a pressing force is naturally formed to prevent the blade root from being upwarping. The utility model saves cost and improves work efficiency, maximally improves the strength of the roll insert cutter, increases the cutting depth and cutting speed, and shortens the processing time.

The utility model discloses a combined type quick-change jaw structure which comprises a fixed jaw and a quick-change jaw, a T-shaped open slot is formed in one side, facing the fixed jaw, of the quick-change jaw, a locking rod is inserted into the T-shaped open slot, the head of the locking rod is in a T shape matched with the T-shaped open slot, and the head of the locking rod is connected with the fixed jaw. A spring is arranged on the side, away from the T-shaped open groove, of the locking rod, the top of the locking rod is connected to the driving rod, the fixed jaw is connected with a compression screw matched with the driving rod, and a clamping spring matched with the compression screw is connected into the driving rod. Compared with the prior art, the utility model has the advantages that: 1, the jaw structure of the combined type quick-change flat tongs is provided, and the problem that the jaw of the existing flat tongs is inconvenient to replace is solved; 2, the jaw is efficiently and quickly replaced, the replacement time of the jaw is shortened, and the production efficiency is improved;

The dental implant structure with the zero-degree composite abutment comprises an implant, the zero-degree composite abutment, a compression screw and a dental crown, the implant is in threaded connection with the zero-degree composite abutment, and the zero-degree composite abutment is in inserted fit with the dental crown and then compressed on the zero-degree composite abutment by the compression screw, so that full-screw connection is realized; and the defects caused by full glue connection and full clamping connection are avoided. The dental implant structure disclosed by the utility model is stable and reliable in overall connection strength, and a dental crown can be directly mounted on a zero-degree composite abutment.

The invention relates to the technical field of bolt machining, in particular to a clamping tool and method for drilling holes in the head of a hexagonal head bolt product, and the clamping tool comprises a bottom plate, a support body and a sliding block; the support body is mounted on the top surface of the bottom plate; a supporting block and a door-shaped frame are integrally formed on the top face of the support body. The supporting blocks and the door-shaped frame are arranged at intervals to form air opening grooves. A plurality of V-shaped grooves are formed in the top surface of the supporting block; a plurality of pressing plates are installed on the top face of the supporting block through compression screws, and each V-shaped groove is correspondingly provided with one pressing plate. The sliding block is inserted into the door-shaped frame in a sliding mode, and the front end of the sliding block extends into the air switch groove. A plurality of hexagonal grooves are formed in the top face of the sliding block, and the positions of the hexagonal grooves correspond to the positions of the V-shaped grooves.

The utility model relates to the field of machining, and discloses an automotive auxiliary tool for machining a large-size elastic washer, which comprises a chassis, a pressing ring, a compression screw and an auxiliary top tray, the chassis is installed on a three-jaw chuck of a lathe, the pressing ring is installed on the right end face of the chassis, and the pressing ring tightly presses the periphery of a rubber square plate on the right end face of the chassis. The auxiliary top tray is used for tightly jacking the middle part of the rubber square plate; a center hole matched with a movable center of a lathe tailstock is formed in the right end face of the auxiliary top disc, and the movable center abuts against the auxiliary top disc through the center hole. When being used for machining workpieces, the elastic rubber pad turning clamp can adapt to different sizes, can carry out turning machining on rubber pads with large elasticity, solves the problems of clamping and positioning in turning machining of the elastic rubber pads with large inner hole sizes, and meets the requirement for large-batch production and machining of the parts of the type.