39results about How to "Improve clamping rigidity" patented technology

A steering column apparatus includes: a stationary column member; a movable column member whose one end is supported on the stationary column member nonrotatably about a center axis and movably along the center axis; a column head disposed on the other end of the movable column member; a wheel shaft supported rotatably on the column head; a column clamp for clamping and unclamping the movable column member with respect to the stationary column member at two or more points which are spaced along the center axis of the movable column member; and a control lever whose operation lever end is positioned in the vicinity of a steering wheel and which is capable of operating the column clamp.

A steering column apparatus comprising: a steering column provided with a body-side bracket mounted to a body strength member to have a pair of side plate portions opposed each other to be extended in a vertical direction, and a substantially cylindrical distance unit for supporting a steering shaft to be rotatable therein and having a pair of pressed and expanding portions formed to be expanded by plastic working to be pressed and supported by the side plate portions of the body-side bracket; and an adjusting mechanism capable of adjusting a position of the steering column with respect to the side plate portions of the body-side bracket within a predetermined range, wherein the steering column is formed with a reinforcement portion for enhancing the clamping rigidity of the distance unit with respect to the side plate portions.

The invention relates to a machine for cutting a groove on a semi-round tube, in particular to a machine special for cutting a waist-shaped arc groove. The machine comprises a workbench, a groove cutting mechanism, a workpiece clamping mechanism, a groove cutting feed mechanism and a cooling mechanism; the groove cutting mechanism comprises a motive power mechanism, a groove cutting cutter, and acutter shaft bracket; the motive power mechanism transfers motive power to the grove cutting cutter to rotate the groove cutting cutter so as to perform groove cutting operation; the workpiece clamping mechanism comprises a workpiece clamping hand, a motive power transfer joint and a motive power device; and the motive power device transfers the motive power to the workpiece clamping hand throughthe motive power transfer joint, and the workpiece clamping hand works to tightly clasp a workpiece. The groove cutting feed mechanism comprises a carriage and a carriage diving mechanism arranged onthe workbench and used for driving the carriage to be fed or retreated; and a workpiece clamping mechanism is arranged on the carriage. The machine can radially cut arc grooves or waist-shaped arc grooves on a cambered surface of the semi-round tube conveniently, efficiently and accurately.

The invention provides a tensioning clamp for a sheet-type part subjected to rotary milling processing. The tensioning clamp for the sheet-type part subjected to the rotary milling processing consists of a pedestal, a tensioning component and a clamping component, wherein the clamping component comprises a clamping driving device, a box body, a rotary shaft, a retainer cup, a movement crossover joint, a connecting rod, a pulling claw and a symmetrical clamping head; the tensioning component comprises a tensioning driving device, a transmission device and a guide rail sliding block device. According to the tensioning clamp for the sheet-type part subjected to the rotary milling processing, the sheet-type part is fixed by adopting a tensioning way; the clamping rigidity of the part can be effectively improved; the cutter relieving deformation in the processing process of the part is reduced; the processing vibration is restrained; the processing quality of the part is improved; the service life of a knife tool is prolonged; therefore, the processing cost is decreased; tensioning force is controlled through the tensioning driving device; the tensioning force can be guaranteed to be uniform and can be further regulated according to requirement; the symmetrical clamping head is tensioned to clamp the part through the clamping driving device; the rotary center of the part can be guaranteed to be unchangeable in a clamping process; the clamping deformation cannot be caused; further, the operation is simple; a clamping error caused by a human factor can be avoided.

The invention provides a clamping and machining method for turning of a thin-wall weak-rigidity part and belongs to the technical field of the machining process. The clamping and machining method is suitable for a lathe clamping tool for the thin-wall weak-rigidity part. The lathe clamping tool for the thin-wall weak-rigidity part comprises an expansion jig and an expansion bolt. According to themethod, the clamping tool is used for clamping the part. Through the clamping tool, the defects existing in the clamping and machining method of the existing process are overcome, the efficiency of alathe machining the thin-wall part can be improved, and the unqualified rate of products can be reduced.

The invention provides a clamp for drilling of a shifting fork, and belongs to the technical field of machining. The clamp comprises a compressing assembly, a locating assembly and a threaded hole guide assembly. A plug of the locating assembly penetrates a bearing support, and the rear end of the plug is arranged on the bearing support through a plug nut. An anti-rotation block is arranged between the inner end faces of two feet of the shifting fork. The lower end of a compressing plate bearing column of the compressing assembly is arranged on the bearing support, the upper end of the compressing plate bearing column abuts against one side of a compressing plate, and the other side of the compressing plate is pressed on the shifting fork. The lower end of a compressing adjusting rod is arranged on the bearing support, and the upper end of the compressing adjusting rod penetrates a U-type groove of the compressing plate and is locked by a compressing locking nut. A guide bearing plate of the threaded hole guide assembly is horizontally arranged on the upper side of the bearing support through bearing plate mounting screws. A guide sleeve is arranged in a clamping groove and compressed on the guide bearing plate through a guide sleeve mounting screw. The clamp is good in clamping effect, and the accuracy of the position of a threaded hole and drilling quality are improved through the threaded hole guide assembly.

The invention discloses a polygonal cutting blade with bulge parts in a hole and a cutter. The polygonal cutting blade comprises a blade body consisting of an upper surface, a lower surface and a plurality of side surfaces connected with the upper surface and the lower surface, wherein a center hole penetrating through the upper surface and the lower surface is formed in the blade body, the bladebody is in central symmetry about the central axis of the center hole, each side surface and the upper surface intersect to form a plurality of cutting edges, one bulge part is arranged in the position, corresponding to each side surface, of the inner surface of the center hole, and the bulge parts directly face the corresponding side surfaces. The cutting blade has the characteristics of positioning reliability and stability, multiple clamping and long service life. The cutter comprises the cutting blade, fastening screws and the center hole of the cutting blade produce over-positioning multidirectional clamping under multiple constraints, deformation directions and areas unfavorable for fasteners are effectively controlled, the vibration of the cutting blade can be effectively attenuated during cutting, and the service life of the cutter is prolonged.

The invention discloses a circular blade with an accurate positioning structure and a cutting tool. The circular blade comprises a blade body, wherein the blade body is composed of an upper surface, a lower surface and a side face which is used for connecting the upper surface with the lower surface; and the blade body is provided with a center hole which penetrates through the upper surface and the lower surface, the blade body is centrosymmetric relative to the central axis of the center hole, the upper surface intersects with the side face to form a cutting edge, the inner surface of the center hole is provided with at least two lug bosses, and the included angle between every two adjacent lug bosses is smaller than 180 degrees. The cutting blade has the advantages that positioning is reliable and stable, multi-ply clamping can be achieved, and the service life is long. The cutting tool is provided with the circular blade, sliding or rotating of the circular blade in the peripheral direction in the using process can be eliminated, the stability of the cutting edge in a cutting region is guaranteed, other cutting processes are prevented from participating in one cutting process, the usable frequency of the circular blade on the cutting tool is effectively stabilized, and then the service life of the cutting tool is prolonged.

The invention discloses a method for machining a thin web titanium alloy edge strip, wherein the method is convenient to operate and capable of eliminating part deformations. The method for machining the thin web titanium alloy edge strip comprises the following steps in order: rough machining, semi-finish machining and finish machining; in the process of rough machining, firstly, a hard alloy end mill is adopted for rough machining of a part at a large cutting depth, a low rotating speed and a low feed speed; and secondly, a clamped indexable milling cutter is adopted as a machining cutter for equal-height cutting machining at a small cutting depth in such a manner of fast feed. The method for machining the thin web titanium alloy edge strip is capable of quickly removing black allowance and improving the machining efficiency; besides, the allowance of each portion is uniform, which is favorable for programming during semi-finish machining of the part, and further, machining cutting can be more steady.

The grinding clamp suitable for the turbine multi-connection guide vane part assembly can be used for clamping the turbine multi-connection guide vane part assembly, clamping is convenient, stability is high, and the clamping rigidity of vanes can be enhanced. The device comprises a mounting bottom plate, and a positioning mechanism, a supporting mechanism and a pressing mechanism are mounted on the mounting bottom plate; the positioning mechanism comprises a blade positioning block and a blade outer ring runner surface clamp positioning block, and the top of the blade positioning block protrudes upwards to form a positioning boss I and a positioning boss II; the supporting mechanism comprises a first supporting structure and a second supporting structure, the first supporting structure corresponds to the bottoms of the inner ring and the outer ring of the part, and the second supporting structure is used for supporting the inner radial face of the part. The pressing mechanism comprises a first pressing structure, a second pressing structure and a third pressing structure. The first pressing structure is used for pressing an outer ring of a part, the second pressing structure is used for pressing an inner ring of the part, and the third pressing structure is used for being matched with a blade outer ring runner face clamp positioning block to clamp the outer ring runner face of the part.

The invention relates to a numerical control processing method and a special processing fixture for an inertial platform body. The special processing fixture comprises a fixture A and a fixture B. The numerical control processing method comprises the following steps: (1) mounting and adjusting bases of the fixture A and fixture B; (2) processing a reference surface, a positioning surface and a positioning hole of the inertial platform body; (3) processing the positioning surface, a positioning slot and other parts of the inertial platform body; and (4) processing other surfaces of the inertial platform body. The invention provides a processing method and a processing tool capable of conveniently clamping and quickly adjusting. By adopting CAM (Computer Aided Manufacturing) programming, the processing method and the processing tool have the advantages of easy processing, centralized processes, low production cost, high production efficiency, high processing precision and the like. By adopting the processing method provided by the invention, the defects of the prior art, such as long processing time of a single piece, low efficiency, high manufacturing cost and the like, are overcome, and the process flow and the manufacturing time of the platform body can be greatly reduced. By twice clamping and positioning, the processing for all the surfaces of a part along six directions is finished on a double operating platform horizontal type processing center.

The invention discloses a clamping and fixing device for machining an axle shell of a heavy truck. The clamping and fixing device comprises a pedestal, an automatic hydraulic clamping mechanism, a hydraulic three-jaw chuck, an automatic hydraulic leveling mechanism, an auxiliary hydraulic support component, an auxiliary hydraulic clamping mechanism and a top type automatic hydraulic tailstock. The hydraulic three-jaw chuck is connected with a fourth shaft of a numerically-controlled machine tool, the fourth shaft of a numerically-controlled machine tool is connected with a rotary hydraulic oil tank, the automatic hydraulic clamping mechanism is installed on the top type automatic hydraulic tailstock, the automatic hydraulic leveling mechanism is used for helping the pipa panel of the axle shell to automatically level, the hydraulic three-jaw chuck is used for clamping the flange hole in one end of the axle shell, the top type automatic hydraulic tailstock is used for clamping the flange hole in the other end of the axle shell, the auxiliary hydraulic support component is used for supporting the axle shell, and the auxiliary hydraulic clamping mechanism and the automatic hydraulic clamping mechanism are used for clamping the surface of the axle shell. According to the clamping and fixing device for machining the axle shell of the heavy truck, the automation degree is high, the axle shell of the heavy truck is firmly and reliably clamped and positioned, and the machining efficiency and the machining quality of the axle shell are improved.

The invention relates to a method and device for machining internal teeth of a planetary cycloidal pin gear reducer housing. A tool is installed on a vertical machining center, a workpiece is assembled on the tool, alignment of the tool is carried out, the tool is static after the workpiece is completely machined, and the workpiece is detached for machining a new workpiece. The invention further provides the method for machining the internal teeth of the planetary cycloidal pin gear reducer housing and a flexible device. When the method and device are used for machining the internal teeth of the planetary cycloidal pin gear reducer housing, machining of all pin tooth holes can be completed through one-time clamping, machining errors and assembly errors are reduced, the manufacturing accuracy is improved, the production speed is accelerated, and products meet the high precision requirements of reducers.

The invention relates to a processing method of a weakly rigid I-shaped component, and belongs to the technical field of machining, in particular to a processing method of a long and thin thin-walledhigh-strength component; and the goal of performing anti-deformation efficient processing on the weakly rigid I-shaped component is achieved by employing a combined processing measure of component rigidity-gradient steady-state processing and minimum control over cutting stress. The employed technical solution is that the processing method of the weakly rigid I-shaped component comprises the following steps of a clamping step: clamping with a double-parallel jaw vice; and a processing step: processing the weakly rigid I-shaped component in sequence of processing from two ends to the center byemploying a processing way of high-speed milling; moreover, when a groove in an I-shaped structure is processed, two technology grooves are firstly milled at a high speed; and the technology grooves are the two end parts of the groove in the I-shaped structure. The processing method disclosed by the invention is used for processing the weakly rigid I-shaped component.

The invention relates to a special clamp for realizing multi-point clamping. The special clamp comprises a clamp body, wherein a piston rod which is in horizontal arrangement and can move is arranged in the clamp body, the lower side of one end of the piston rod is provided with an inclined surface, the other end of the piston rod is provided with a piston, a guide sleeve with the Y-shaped cross section is arranged in the clamp body and under a position, provided with an inclined surface, of the piston, a spring sleeve, a spring and a press block which can vertically move are sequentially arranged in the guide sleeve from top to bottom, a rolling post is arranged between the spring sleeve and the inclined surface, the two sides of the rolling post are provided with position limiting rings, the lower end of the press block is provided with three press claws in circumferential distribution, and the three press claws can extend out of the guide sleeve for tightly pressing a workpiece. The special clamp has the advantages that through hydraulic driving, three press claws arranged on the press block are simultaneously in contact with the workpiece, the installing and clamping rigidity of the workpiece are improved, and the stability and the reliability of the installation and clamping are improved.

The invention discloses a symmetric double-spindle cutter groove grinding machine. The symmetric double-spindle cutter groove grinding machine comprises a workpiece shaft vertical column, grinding spindle vertical columns and a grinding machine base arranged at the bottoms of the workpiece shaft vertical column and the grinding spindle vertical columns, wherein a workpiece shaft is fixedly connected onto the workpiece shaft vertical column; a workpiece shaft working table is fixedly connected with the lower part of the workpiece shaft vertical column; the grinding spindle vertical columns are oppositely arranged on the left side and the right side of the front part of the workpiece shaft vertical column separately; a height adjustment sliding groove is formed in each of the grinding spindle vertical columns in the vertical direction; a swinging groove is formed in each of the height adjustment sliding grooves; a grinding spindle is connected with the interior of each of the swinging grooves; and two grooving grinding wheels are arranged on each of the grinding spindles.

A ventilation or check valve for ventilation or outlet openings of compressed air apparatuses of vehicles, includes at least one diaphragm disk which is made from flexible material, is held with a central region in a bore of a valve housing and is prestressed with a radially outer region against a valve seat on the valve housing, to lift up from the valve seat in a pressure-induced manner in the case of a pressure gradient between an inlet space and an outlet space or atmosphere and to open a flow cross section between the inlet space and the outlet space or atmosphere, in which, as viewed in the circumferential direction of the diaphragm disk, a plurality of hold-downs which are arranged at a circumferential spacing from one another and hold down the radially outer region of the diaphragm disk locally against the valve seat are provided on the valve housing.

The invention discloses a machining tool and method for slender shaft type parts. The machining tool comprises a machine frame, a left spindle box, a left tail clamping and pulling mechanism, a left tool rest, a left tool following mechanical hand unit, a left X axis transmission unit, a left Z1 axis transmission unit, a left Z2 axis transmission unit, a left chip removal mechanism, a right spindle box, a right tail clamping and pulling mechanism, a right tool rest, a right tool following mechanical hand unit, a right X axis transmission unit, a right Z1 axis transmission unit, a right Z2 axis transmission unit and a right chip removal mechanism. The two ends of a workpiece are clamped at the same time through two sets of tailstock clamping mechanisms and a main transmission mechanism, and the tail throwing phenomenon of clamped slender parts is avoided; through the tail clamping and pulling mechanisms, tool following mechanical hands solve the problem that clamping rigidity of slender parts is not enough, and part machining precision is guaranteed; machining is carried out at the same time through two sets of executing devices, and the requirement for clamping force is lowered through the main cutting force equivalent counteraction principle; the purpose of obviously improving productivity is achieved.

The invention discloses a circular cutting blade with an accurate positioning structure and a cutting tool. The circular cutting blade comprises a circular blade body which consists of an upper surface, a lower surface and side surfaces connecting the upper surface to the lower surface, wherein a central hole which penetrates through the upper surface and the lower surface is formed in the blade body; the blade body is centrosymmetric with respect to a central axis of the central hole; the upper surface is crossed with the side surfaces to form cutting edges; at least one circular-arc-shaped groove which is matched with the surface of a fastening screw for fixing the circular cutting blade is formed in the inner surface of the central hole; and offset distance is formed between the groovecentral axis of the circular-arc-shaped groove and the central axis. The cutting tool adopts the cutting blade. The circular cutting blade has the advantages of being reliable and stable in positioning, prolonging the service life of the cutting blade and being capable of preventing the circular blade from rotating in the peripheral direction.

The invention discloses a polygonal cutting blade with bulge parts in a hole and a cutter. The polygonal cutting blade comprises a blade body consisting of an upper surface, a lower surface and a plurality of side surfaces connected with the upper surface and the lower surface, wherein a center hole penetrating through the upper surface and the lower surface is formed in the blade body, the bladebody is in central symmetry about the central axis of the center hole, each side surface and the upper surface intersect to form a plurality of cutting edges, one bulge part is arranged in the position, corresponding to each side surface, of the inner surface of the center hole, and the bulge parts directly face the corresponding side surfaces. The cutting blade has the characteristics of positioning reliability and stability, multiple clamping and long service life. The cutter comprises the cutting blade, fastening screws and the center hole of the cutting blade produce over-positioning multidirectional clamping under multiple constraints, deformation directions and areas unfavorable for fasteners are effectively controlled, the vibration of the cutting blade can be effectively attenuated during cutting, and the service life of the cutter is prolonged.