43 results about "Machine interference" patented technology

A tooling and part design method automatically detects tooling and machining interferences with a desired part design. A user selects a mechanical component. Data indicative of the mechanical component, such as a part template, is determined and displayed to the user. The user selects one or more design parameters of the mechanical component to modify. Any necessary tooling and / or machining functions are embedded in the data, and performed automatically on the mechanical component when the user modifies a design parameter. Any interferences caused by the modification are automatically identified to the user.

The invention discloses a spacecraft damping vibration isolation micro-vibration test chamber which is divided into a test chamber body and a control chamber body. The test chamber body comprises a room body, vibration isolation platforms, a test device and an auxiliary facility. The room body of the test chamber body is a semi-damping chamber, the floor is a gravity-leveled floor, and a roof and surrounding walls of the test chamber body are provided with wedge absorbers respectively. The center of the floor of the test chamber body is provided with three vibration isolation platforms. The first vibration isolation platform is a single-machine micro-vibration source surrounding test station and is provided with two spacecraft single-machine interference source test platforms. The second vibration isolation platform is a special multi-freedom-degree source surrounding simulation station and is provided with a six-freedom-degree source surrounding simulation system. The third vibration isolation platform is a station for a manned spacecraft single-machine noise source device sound power test and a large-part and small satellite whole micro-vibration test and is provided with a product and micro-vibration test tool and the like. The side face of the test chamber body is provided with a sound isolation door beneficial to going in and going out of tested devices or products. The control chamber body is a conventional spacecraft environmental test chamber.

The invention provides an offset torsion beam elastic tailstock used for automatic clamping of a numerically-controlled machine tool. According to the offset torsion beam elastic tailstock, a tip is installed in an offset mode to form a torsion beam structure, clamping force is obtained through a compression spring, and quick advancing and retreating of the tailstock is achieved through a rolling linear guiding rail; when top clamping force is exerted on the tip, the offset torsion beam structure enables a box body of the tailstock to abut against a planar sliding friction guiding rail perpendicularly installed on the lateral side to be positioned accurately and generate pretightening force on the guiding rail; when radial action force is exerted on the tip in the horizontal direction, balance can be achieved effectively through the pretightening force, machining interference of the offset torsion beam elastic tailstock is reduced, positioning is accurate, and vibration and abrasion can be effectively reduced. The offset torsion beam elastic tailstock is suitable for a metal cutting numerically-controlled machine tool according to which a tip needs to be installed in the offset mode and the tip bears radial alternating cutting resistance which is exerted in the horizontal direction during machining.

The present invention provides a connector with a lever, which can be equipped with a lock forgetting detection mechanism without increasing the number of components, and can prevent the occurrence of lock forgetting at low cost, and the lock forgetting will not cause damage. Interference with external machines and materials. In the connector (4) with a lever, the lock forgetting detection mechanism (9) capable of judging whether the fitting operation lever (7) that completes the fitting of the connector housings is locked includes: an end edge proximity portion ( 91), which is integrally formed on the fitting operation lever (7), and is close to one end edge (621) of the cover part (62); the recess (76), which is formed through the joint along the mutual fitting direction of the connector housings The end edge approaching portion (91); and the locking confirmation protrusion (66), which protrudes from one end edge (621) of the cover portion (62) and is inserted through the recess (76) when the fitting operation lever (7) is locked. .

The invention belongs to the technical field of ultraprecision machining and complex part manufacturing and relates to a method for selecting ultraprecision turning tools. The method comprises the following procedures: a plurality of sectional curves for a machined surface are selected with rotating section analysis or according to the geometry of the machined surface; the solution is found, and with the sector of sectional curve method, the minimum blade arc radian value for machining each curve is solved; the depressed regions of each curve are searched and the solution for radii of the depressed regions is conducted with the method of circle fitting to obtain the maximum blade arc radius value of each curve; the minimum blade arc radian value and the maximum blade arc radius value of each sectional curve are compared, and the blade arc radian of a turning tool to be selected is confirmed according to the largest minimum blade arc radian value and the blade arc radius of the turning tool to be selected is confirmed according to the lowest maximum blade arc radius value; the turning tool is selected. The turning tool selecting method provided by the invention can reduce or avoid the problem of machining interference brought by improper turning tool selection.

The invention belongs to the field of computer aided manufacturing, and discloses a multi-axis machining interference detection and processing method based on a two-stage voxelization model, comprising the following steps of: 1) establishing a two-stage voxelization model according to the input workpiece STL model to be processed; 2) removing redundant point and redundant side information in a triangular mesh model, and establishing the topological relationship between triangular meshes; 3) finding the algorithm for passing the voxel through a seed triangle mesh; 4) searching for its topological neighborhood A in a certain voxel according to a seed triangle; 5) performing local interference detection and processing on a generated basic processing path; 6) performing global interference detection on the generated basic processing path; and 7) performing a global interference processing algorithm for the two-stage voxel model. The method adopts a two-stage voxel model, and can quickly locate the spatial coordinate point to the spatial topological position of the model. Therefore, when performing the spatial object intersection test, the method has high superiority in the aspect of efficiency.

An information processing device controls operation trouble or a calculation amount related to a machine interference check by automatically creating a three-dimensional model optimal for the machine interference check. The information processing device optimizes, for the interference check, three-dimensional model data of a machine including a plurality of structures. The information processing device includes a check object selection unit that performs selection among the structures, and a model creating unit that creates three-dimensional model data for an interference check which data includes the selected structure. Since the information processing device can generate three-dimensional model data optimized for an interference check, there is no trouble for a user to create new three-dimensional model data by himself / herself, and a simple and effective interference check can be realized.

The invention discloses a hip joint boosting device based on parallel mechanisms. The boosting device comprises a waist support assembly, two constraint assemblies and two execution assemblies; each execution assembly comprises a leg clamping sub assembly, a sensor sub assembly, a fixing plate and two driving branch chain sub assemblies, the driving branch chain sub assemblies are connected with the waist support assembly and the corresponding fixing plates and are UPS branch chains which are symmetrically distributed relative to the front and back of the leg of a person, and each sensor sub assembly is connected with the corresponding leg clamping sub assembly and the corresponding constraint assembly. According to the hip joint boosting device based on the parallel mechanisms, by means of the design of the constraint assemblies and the execution assemblies, three-degree-of-freedom rotation of the device can be achieved, it is guaranteed that the rotation center of the device is overlapped with that of hip joints of different patients, and injuries caused by human-machine interference force is effectively avoided; meanwhile, the structure is simple, and use is convenient.

A milling cutter for thread milling with less interference comprises a cutter body capable of rotating around a spin axis and cutting blades evenly distributed in the circumferential direction. The milling cutter is characterized in that the tooth forms of cutting teeth of the cutting blades are special tooth forms which can reduce machining interference. Tooth form outline modeling mainly comprises the following steps that firstly, a thread theoretical tooth form outline is established; secondly, the maximum over-cutting amount Emax in the thread milling process is calculated; thirdly, the tooth root length and the tooth top length of the tooth form outline of the thread milling cutter are changed; and fourthly, the special tooth form outline capable of reducing interference of thread milling is obtained. In addition, the milling cutter comprises a cutting part and a handle part, and half cutting blades on the cutting part are provided with back tapers. By means of the thread milling cutter, interference generated in the thread milling process can be reduced, the initial process of milling is stable, the cutting force is relatively small, the thread machining precision can be effectively improved, and the service life of the milling cutter can be effectively prolonged.