The invention discloses a positioning tool, a positioning testing device and a bevel gear circumferential backlash measuring method. The positioning tool is used for simulating rotor centering state and conveniently adjusting the circumferential backlash of a bevel gear. The positioning tool comprises a positioning part and a compressing part, wherein the positioning part is sleeved with a drivinggear and is capable of simulating a rotor, and the positioning part is assembled into an air inlet case together with the driving gear; and the compressing part is arranged coaxial with the positioning part and is in axial propping fitting with the positioning part in order to simulate the centering state of the rotor in working. According to the positioning tool, the rotor is simulated by the positioning tool; the front and the back of the positioning tool are centered through the positioning part and the compressing part; the state that the rotor in actual working is centered by front and back supporting is simulated; the positioning part and the driving gear are assembled into the air inlet case together; the compressing part and the positioning part are in axial propping fitting; an engine is mounted assembled into a rear supporting case, and the air inlet case part is simply assembled, thus the circumferential backlash of a central transmission bevel gear can be measured, and asa result, an engine assembling structure is greatly simplified.

Positioning tool, positioning testing device and bevel gear circumferential backlash measuring method

The invention relates to a machining method of sloping ring groove outer cylinder. The method comprises the steps that material characteristics and machining performance are analyzed, and according to factors such as machining devices, facilities and environmental conditions, a reasonable part machining technology is formulated. According to the machining technology, a device, a cutter, machining processes such as heat treatment, environmental safety and the like are controlled, by using turn-milling three-shaft rough milling grinding machining and five and a half shaft finish machining, after parts are subjected to heat treatment, a numerical control lathe and a numerical control grinding machine are adopted again, a certain technology strategy, a reasonable clamping mode and strict grinding parameters are adopted, and the sloping ring groove outer cylinder with good quality is obtained.

Machining method of sloping ring groove outer cylinder

The invention discloses a movable gap detection device for a mechanical lock of an aircraft actuator cylinder in a locked state. The movable gap detection device comprises a force bearing assembly, apower executing mechanism and a measuring block. The device is simple in structure and convenient to use, and an accurate movement gap of the mechanical lock is obtained by detecting the relative movement of a piston rod of the aircraft actuator cylinder and an aircraft outer cylinder. The problem of detecting a locked state movement gap value of the aircraft actuator cylinder mechanical lock withthe mechanical lock is solved, and the device can be applied to detection of locked state movement gaps of various aircraft actuator cylinder mechanical locks with mechanical locks.

Movable gap detection device for mechanical lock of aircraft actuator cylinder in locked state

The invention relates to filter multi-head automatic debugging equipment which comprises a plurality of coaxial adjusting devices, and the arrangement of the plurality of coaxial adjusting devices corresponds to the arrangement of screws on a filter; the coaxial adjusting device comprises a sleeve and a screwdriver rod, and the screwdriver rod is inserted into the sleeve to form two concentric rotating structures which rotate independently; the coaxial adjusting device further comprises a linkage rod, the linkage rod and the sleeve are arranged side by side in parallel, and the sleeve and thelinkage rod are in rotary linkage. The equipment also comprises a plurality of rotary driving mechanisms which are in one-to-one correspondence with the screwdriver rods and the linkage rods, are in transmission connection with the screwdriver rods and the linkage rods and are used for independently driving the screwdriver rods and the linkage rods to rotate. According to the equipment, screw debugging and nut self-locking can be carried out at the same time through multiple heads, debugging efficiency is improved, and the problems in the prior art are solved.

Filter multi-head automatic debugging equipment

The invention discloses a thin-wall through-hole part machining method. The thin-wall through-hole part machining method comprises the following steps that step A, an ejector rod plug is provided forplugging one end of a through inner cavity of a thin-wall shaft part; step B, a closed plug is provided and inserted into the other end of the inner cavity of the thin-wall through-hole part, and theinner cavity of the thin-wall through-hole part is ensured to be filled with oil by matching with the extending ejector rod part; step C, the thin-wall through-hole part in the step B is taken out from an oil groove for being wiped, and molded surface machining of the outer circle surface is carried out; and step D, after machining of the outer circle surface in the step C is completed, the closedplug is taken down firstly, then an ejector rod plug is taken down, and therefore machining of the outer circle surface of the thin-wall through-hole part can be completed. According to the thin-wallthrough-hole part machining method, the inner cavity of the thin-wall shaft part is filled with the oil, machining deformation is controlled to be reduced, molded surface machining of the outer circle surface of the part can be completed at a time, and therefore the production efficiency is greatly improved.

Thin-wall through-hole part machining method

The utility model discloses a clamping thin -walled workpiece from centring means. Clamping thin -walled workpiece from centring means is including being used for through the connecting piece teper -shank continuous with the lathe spindle for the tail bone of being connected through connecting piece and machine tool tailstock, the centre head is equipped with on the tail bone, be equipped with on the teper -shank rotational symmetry centering structure, the thin -walled workpiece suit this rotational symmetry centering structural and have through the centre head pushes up tightly thin -walled workpiece. The utility model provides a yielding problem of thin -walled workpiece processing.

Clamping thin -walled workpiece from centring means

The utility model discloses a fixed-distance inner hole annular groove forming structure. The method is specially used for annular groove turning of the inner hole of the tubular part. The device comprises a wedge-shaped driving shaft, a knife rest, a supporting guide sleeve, a screw cap and the like, the wedge-shaped driving shaft drives the cutter body arranged on the cutter rest through the inclined surface to feed and retract along the radial direction of the to-be-processed part; during use, the wedge-shaped driving shaft is installed and connected to a common lathe or a radial drill through the quick-change chuck, rotary cutting motion and feeding and retracting of the cutter body are achieved by driving rotation and axial motion of the wedge-shaped driving shaft, and the distance between an annular groove of an inner hole of a part and an orifice is determined through contact positioning of the guide portion of the supporting guide sleeve and the end face of the orifice of the part. The device is suitable for machining large-batch inner hole ring grooves and has the advantages of being easy to operate, high in efficiency and low in cost.

Fixed-distance inner hole annular groove forming structure

The utility model provides an undercarriage wheel hub's directional broaching device of spline bush, its includes the higher authority all be equipped with chassis (1) of a plurality of stands (12), the outer lane on this chassis of all is equipped with the centering hole who is used for with the horizontal broaching machine connection pad and is connected fixed waist shape hole (21), and the centre bore internal fixation on this chassis is equipped with setting element (18), the middle part of this setting element is equipped with location centre bore (181), and should fix a position the oneend that the centre bore is close to setting element up end (182) and all be equipped with the key tooth, circles fixed be equipped with diamond pin (16) and a plurality of uide pin (13) in this setting element up end, a deflector is fixed through the uide pin and is compressed tightly on setting up the big terminal surface of spline bush in the setting element centre bore, the top of a pluralityof stands is fixed to set up diaphragm (6), and fixed setting guide cover (11) on this diaphragm all is equipped with the key tooth in the guide cover centre bore, and the key tooth profile of tooth direction of fixing a position in centre bore, the guide cover centre bore is unanimous.

Undercarriage wheel hub's directional broaching device of spline bush

The invention discloses an upper lock gap detection device and a detection assembly method The upper lock gap detection device comprises a support framework and a clamp body arranged on a work bench and used for fixing an upper lock The bottom end of the support framework has a positioning surface positioned on the work bench; the top end of the support framework is provided with a fork shape member capable of moving up and down with respect to the support framework; the fork shape member is used for carrying out press adjustment on a lock hook of the upper lock; and the support framework is provided with a plurality of plug pins arranged transversely for press positioning of the upper lock after being assembled The gap detection device can be used for a plurality of gap detection and dimension guarantee of the upper lock; and through reasonable process arrangement, the quality of the product is ensured, and meanwhile, higher production efficiency is also ensured

Upper lock gap detection device and detection assembly method

The invention relates to a meshing clearance detection device for an airplane deceleration steering gear bevel gear pair. The detection device comprises a clamp body, wherein the clamp body is provided with a first spline shaft fixedly locked with a splined hole at one end of a deceleration steering gear small gear shaft, the first spline shaft is pressed tightly by a first pressing screw, the clamp body is further provided with a first fastener used for fixing a deceleration steering gear casing, one end of the clamp body is equipped with an indicating gauge, a spline sleeve is locked at a second spline shaft of a deceleration steering gear large gear shaft in a threaded mode, the second spline shaft is pressed tightly by a second pressing screw, the spline sleeve and the second spline shaft are integrated into one body, the spline sleeve is provided with a measurement reference surface, the measurement reference surface directly contacts with a measurement rod of the indicating gauge, the spline sleeve is symmetrically provided with two supporting screws, and the fixing portion of one supporting screw is provided with a standard counterweight. The detection device is advantaged in that the standard counterweight is utilized to make the deceleration steering gear large gear shaft drive the small gear shaft to realize positive rotation and reverse rotation, and the reading scope of a pointer of the indicating gauge is the meshing clearance scope of the bevel gear pair.

Li Zhenyuan

Papers

Clamping thin -walled workpiece from centring means

Fixed-distance inner hole annular groove forming structure

Undercarriage wheel hub's directional broaching device of spline bush

Upper lock gap detection device and detection assembly method

Meshing clearance detection device and method for airplane deceleration steering gear bevel gear pair