36results about How to "Avoid repeated positioning errors" patented technology

The invention discloses a plane milling and boring machine tool rest comprises a milling tool bit, a boring tool bit, a ram, a central shaft, an indexing mechanism and a tool rest body. The tool rest body is rotationally connected with the central shaft. The milling tool bit or the boring tool bit is mounted at one end of the tool rest body. The indexing mechanism is fixedly connected with the tool rest body. The milling tool bit comprises a five-axis milling head and a milling head pull rod which are fixedly connected. The boring tool bit comprises a boring tool rest pull rod, a lower-end fluted disc, a boring tool rest and a boring tool bar, wherein the boring tool rest pull rod and the lower-end fluted disc are fixedly connected at the upper end of the boring tool rest, and the boring tool bar is fixedly connected at the lower end of the boring tool rest. By the boring tool rest pull rod, indexing adjustment of the ram in a range of 1-20 degrees can be achieved, simple switch of the milling tool bit and the boring tool bit can be achieved, especially in machining of large workpieces, complex curve face milling, taper hole boring and excircle surface cutting can be completed after one-step mounting, machining efficiency and precision of the large workpieces are increased greatly, repeated positioning errors caused by secondary clamping are avoided.

The invention discloses a rotary IC card punching and milling equipment, comprising a frame, the frame is provided with two regular hexagon-shaped side plates arranged opposite to each other, and the two side plates are both provided with positioning mechanisms; A station rotating mechanism rotatably connected between the middle parts of the two side plates and in the form of a regular hexagonal column, and a card cutting station and a square groove rough milling station correspondingly arranged between the opposite sides of the two side plates in the circumferential direction. , square groove fine milling station, square groove size detection station, circular groove milling station; the invention forms a rotary multi-station cyclic operation, realizes the combination of card cutting, rough milling, fine milling and detection, and has high production efficiency , The dimensional accuracy and surface finish are higher, so that the product qualification rate is greatly improved, no repeated positioning is required, the accumulation of repeated positioning errors is avoided, and the dimensional accuracy of the square groove is guaranteed.

The present invention discloses a device for measuring thermal errors at a working state of a gear grinding machine. The device comprises a temperature measuring part and a displacement measuring part, the temperature measuring part comprises a temperature sensor arranged on the main heating part of the gear grinding machine, the displacement measuring part comprises an X-direction displacement sensor and a Y-direction displacement sensor which are fixed on a main shaft base of the gear grinding machine through a support, the X-direction displacement sensor and the Y-direction displacement sensor contact with a detection rod, and the detection rod is fixed on a rotary table. Also disclosed is a method for measuring thermal errors by using the device. The method comprises displacement measurement, detection rod circle centre coordinate sequence calculation, system error removal, rotary table axis expression calculation and thermal error modeling. According to the device, the X-direction displacement sensor and the Y-direction displacement sensor are arranged on the gear grinding machine, and temperature sensors are arranged on main heating parts of the gear grinding machine; and by using the device for thermal error measurement, the measuring precision is high and a compensation result is excellent. The device is simple in structure, and the measuring method is easy to learn and easy to popularize.

The invention provides a special tool for processing the end surface of a bearing cover. The special tool comprises a die holder, wherein the upper end surface of the die holder is connected with a rotating module, and the periphery of the bottom end of a pin shaft positioned in the rotating module is orderly sleeved with a plane bearing and a belleville spring; the bottom end of the pin shaft penetrates through the die holder to be connected with a locknut; the rotating module rotates round the pin shaft on the die holder and is positioned with the die holder through a positioning bolt; the upper end of the rotating module is connected with a central stud, the central stud is movably sleeved with a backing plate and a pressing plate, and a flanged nut is arranged at the top end of the central stud; a positioning column used for positioning the outer wall of the rotating module is clamped on the die holder positioned outside the rotating module. The special tool adopts the 180 degrees of rotation of the rotating module to meet the processing of the two parallel surfaces of the bearing cover, therefore realizing the purpose that one-time clamping meets the processing of two working procedures, greatly improving the processing efficiency and precision, and avoiding a repetitive position error.

The invention provides a processing tool and a processing method for a multi-cavity product. The processing tool is designed according to the structural characteristics of the multi-cavity product. The processing tool includes a fixture body, a positioning pin and a connecting device, and the fixture body is a stepped circular structure. , the position of the axis on the big-end disc is set with a center hole, and eight threaded holes are processed on both sides of the center hole to match the process holes on the multi-cavity product; the positioning pin is a stepped circular structure, and the big end and the processing tooling Cooperate with the center hole on the top, and the small end extends out of the center hole to match the positioning hole on the multi-chamber product. During processing, use the positioning pin as a reference, cooperate with four sets of threaded connectors passing through the product process hole and the threaded hole of the processing tool to accurately locate the position of the inner cavity of the product. The invention can process four inner cavities with one set of tooling, which solves the problems of long positioning and alignment time, large repeated positioning error, low speed during processing and easy to cause product surface crushing in traditional processing methods, effectively improves production efficiency and Ensure product quality.

The invention discloses an electrophoresis auxiliary micro-ultrasonic machining tool and a method for implementing electrophoresis auxiliary micro-ultrasonic machining by the utilization of the machine tool. The machining tool comprises a spindle system, an electricity feeding system, a spindle micro-ultrasonic longitudinal vibration system and a multi-functional cup-shaped working solution groove. A novel combined machining technology is provided, absorption of electrophoreses is added to the micro-ultrasonic machining, so that micro abrasive grains in ultrasonic machining working solution are driven by electric field force to move to neighborhood of a machining area, and existence of the abrasive grains in the machining area is guaranteed. The utilization ratio of the abrasive grains can be effectively improved, so that the efficiency of the micro-ultrasonic machining is improved.

The invention discloses a special machine tool for boring rear axle housings, which includes a bed and a fixture. The fixture includes an intermediate positioning mechanism for positioning the pipa holes of the rear axle housing arranged in the middle of the upper surface of the bed, and symmetrically arranged on the intermediate positioning mechanism. The centering clamping mechanism on both sides, the middle positioning mechanism includes the clamping body and the floating plate arranged on the clamping body, and the centering tensioning mechanism is arranged in the floating plate; the invention uses the V-shaped block of the centering clamping mechanism to carry out rear axle The two ends of the shell are clamped to perform axial positioning and eliminate the positioning error caused by the machining error of the outer circle of the shaft at both ends; The end face of the pipa hole is supported, and the support nails float with the floating plate to eliminate the processing error of the end face of the pipa hole; the rear axle housing is accurately positioned and clamped to ensure that the bearing hole of the boring bridge tube is concentric with the outer circle.

The invention relates to polishing of inner surfaces of metal or non-metal hard and brittle material micropores and particularly relates to a device for polishing the micropores through electrophoresis auxiliary micro-ultrasonic or micro-rotating ultrasonic and a processing method. Electrophoresis auxiliary processing and the micro-ultrasonic processing are combined together; under the adsorption action of electrophoresis, ultra-fine abrasive particles are adsorbed to the surface a fine tool; the fine tool penetrates through a micropore workpiece under the driving of a servo feeding system of a micro-ultrasonic processing machine tool; the fine tool vibrates at high frequency along the axial direction to drive working liquid to disturb severely, so that the ultra-fine abrasive particles can frictionize the inner surface of the micropore workpiece in a sliding manner to fulfill the aim of polishing the micropore workpiece; the polishing of the micropores with the diameters of less than or equal to 100 microns can be realized by implementing the processing of micropore polishing through the electrophoresis auxiliary micro-ultrasonic or micro-rotating ultrasonic; the utilization rate of the ultra-fine abrasive particles is increased, and the roughness of the inner surfaces of the micropores can be reduced.

The invention discloses flexible machining equipment of multi-main shaft and multi-station connecting rods. A bed body of an X axle is arranged on one side of a Y-axle stand column and a bed body (2); a main shaft box body (7) of the X axle is mounted on the bed body of the X axle; a balance device (3) is mounted on the Y-axle stand column and the bed body, and is connected with a Y-axle ram (4); the Y-axle ram is mounted on the Y-axle stand column and the bed body through a Y-axle feed driving system; a revolving worktable (6) with hydraulic fixtures is mounted on the Y-axle ram through an A-axle revolving head (5); multiple positioning and mounting holes of machined workpieces are formed in the revolving worktable with the hydraulic fixtures; multiple main shaft-cutter systems (8) are arranged in the main shaft box body of the X axle; four sets of fixtures are mounted on the revolving worktable with the hydraulic fixtures, and are corresponding to the main shaft-cutter systems on the main shaft box body of the X axle in number; and each set of fixtures can synchronously clamp multiple parts to synchronously participate in cutting. The flexible machining equipment is compact in structure, realizes high automation, and can reduce the labor cost.