CN113172452B - Machining pressing device and machining fixing device of engine shell - Google Patents
Machining pressing device and machining fixing device of engine shell Download PDFInfo
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- CN113172452B CN113172452B CN202110494292.9A CN202110494292A CN113172452B CN 113172452 B CN113172452 B CN 113172452B CN 202110494292 A CN202110494292 A CN 202110494292A CN 113172452 B CN113172452 B CN 113172452B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
- B23Q11/005—Devices for removing chips by blowing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/18—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for positioning only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a pressing device for machining and a fixing device for machining an engine shell, which relate to the technical field of machining and comprise a base, wherein a pressing mechanism is arranged on the base, the pressing mechanism comprises a frame body component which is fixed with the base and is hinged with a cross rod, a driving component, the output end of the driving component is connected with one end of the cross rod through a connecting part, a laminating component is hinged with the other end of the cross rod, an adaptive force-changing component is connected with the laminating component and the cross rod, when the fixing is carried out, the cross rods receive the extrusion of the adaptive force-changing component and elastically extrude the cross rods to different positions on the edge of the engine shell to realize the fixing, in the invention, the contact area of the pressing component and the engine shell is increased, the linear extrusion and even point extrusion of the engine shell is avoided, and the engine shell in a fixed state is protected, but also is beneficial to more stably clamping the engine shell.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a machined pressing device and a machining fixing device of an engine shell.
Background
The engine shell is an indispensable important component of the engine, and the engine shell is often fixed by related fixing devices in the production process of the engine shell, so that the processing of the engine shell is facilitated.
The traditional Chinese patent is disclosed as CN108723839A, wherein the name of the device is 'engineering machinery shell processing positioning clamping device', the device comprises an operation table, a shell bottom processing table is arranged on the left side of the top of the operation table, a shell side processing table is arranged in the center of the top of the operation table, a shell top processing table is arranged on the right side of the top of the operation table, the shell bottom processing table comprises a bottom processing bottom plate, clamping and positioning rails are arranged on two sides of the top of the bottom processing bottom plate, push rod fixing plates are arranged on the outer sides of the clamping and positioning rails, electric push rods are arranged on the tops of the push rod fixing plates, rotating gears are arranged on the tops of the electric push rods, and the device has the function of processing other surfaces after clamping different surfaces of a shell through the arrangement of the shell bottom processing table, the shell side processing table and the shell top processing table, so that the device can process each face of the housing separately without being affected by the clamping member.
The existing technology has the disadvantages that the engine shell is generally limited in position by pressing and clamping a clamping component and the outer surface of the shell, but in the clamping process of the existing fixing device, the clamping part is difficult to be ensured to keep surface contact with the surface of the engine shell, the linear extrusion or point extrusion is easy to occur, and the situation that the extruded part of the engine shell is deformed due to overlarge pressure occurs.
Disclosure of Invention
The invention aims to provide a machined pressing device and a machined fixing device of an engine shell, so as to solve the defects in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme:
a pressing device for machining an engine shell comprises a base, wherein a pressing mechanism is mounted on the base and comprises a pressing mechanism body and a pressing mechanism body;
the frame body assembly is fixed with the base and is hinged with a cross rod;
the output end of the driving component is connected with one end of the cross rod through a connecting part;
the attaching assembly is hinged with the other end of the cross rod;
the adaptive force assembly is connected to the attaching assembly and the cross rod;
when the variable force component is fixed, the cross rods receive the extrusion of the variable force component to elastically extrude the variable force component to realize the fixation at different positions on the edge of the engine shell.
Preferably, the base comprises a mounting seat fixed with the pressing mechanism, and a placing table matched with the pressing mechanism for use is arranged on the mounting seat.
Preferably, the frame body assembly comprises a support column fixed with the base, and the upper part of the support column is movably hinged with the cross rod.
Preferably, the driving assembly comprises a cylinder fixed to the base.
Preferably, the connecting part comprises a connecting frame fixed to the output end of the driving assembly, a connecting frame fixed to the end of the cross rod is movably sleeved on the outer side of the connecting frame, and the connecting frame slides along the inside of the connecting frame in the movement process.
Preferably, the attaching assembly comprises a pressing plate hinged to the other end of the cross rod, and the pressing plate is used for being extruded with the engine shell.
Preferably, a limiting plate in contact with the cross rod surface is fixed on the extrusion surface of the pressing plate, and when the limiting plate is in contact with the cross rod surface, the pressing plate and the cross rod are on the same horizontal plane.
Preferably, the force adapting and changing assembly comprises an arc-shaped cylinder fixed with the pressing plate, one end of the arc-shaped cylinder is suitable for an arc rod fixed with the cross rod, and the arc rod is connected with the arc-shaped cylinder through an elastic piece.
Preferably, the dust removing device further comprises a linkage type dust removing mechanism, the linkage type dust removing mechanism comprises a spring air valve communicated with the same air source of the air cylinder, an air outlet end of the spring air valve is communicated with an air duct, an air outlet end of the air duct is communicated with an air dispersing box fixed with the base, a pressing block fixed with an output shaft of the air cylinder is arranged at the top of a valve column of the spring air valve, and the pressing block extrudes the valve column of the spring air valve along with the motion state of the air cylinder.
A machining fixing device of an engine shell comprises a central part supporting mechanism, a datum hole positioning mechanism and a plurality of edge fixing mechanisms, wherein the edge fixing mechanisms are the pressing devices.
In the technical scheme, the clamping device for machining the engine shell provided by the invention has the advantages that the engine shell is limited and fixed at the top of the base, the deformation of the surface of the engine shell caused by the excessively small extrusion surface of the engine shell during fixing is favorably avoided, the good clamping area is always kept, and the good stabilizing effect in the clamping process is ensured.
Since the pressing device has the technical effects, the edge fixing mechanism also has corresponding technical effects.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a top view of a hold-down device for machining an engine housing of the present invention;
FIG. 2 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic view, partially in section, of a hold-down device for machining an engine housing of the present invention;
FIG. 4 is an enlarged view of the invention at B of FIG. 3;
FIG. 5 is a schematic view of an air dispersing box of the compressing device for machining the engine shell according to the invention;
FIG. 6 is a schematic cross-sectional view of the center supporting mechanism according to the present invention;
FIG. 7 is a top cross-sectional view of the center positioning mechanism of the present invention.
Description of reference numerals:
1. a base; 1.1, mounting seats; 1.2, placing a table; 2. a pressing mechanism; 3. a frame assembly; 3.1, a cross bar; 3.2, a strut; 4. a drive assembly; 4.1, a connecting part; 4.11, a connecting frame; 4.12, connecting frames; 4.2, a cylinder; 5. fitting the assembly; 5.1, pressing a plate; 5.11, limiting plates; 6. a variable force component; 6.1, an arc-shaped cylinder; 6.2, arc rods; 6.3, an elastic piece; 7. a linked dust removing mechanism; 7.1, a spring air valve; 7.2, an air dispersing box; 7.3, an air guide tube; 7.4, briquetting; 8. a sleeve; 9. a pillar; 10. a support assembly; 10.1, a bevel block; 10.2, adjusting a rod; 11. a spring; 12. a first support ramp; 13. a second support ramp; 14. a central positioning mechanism; 14.1, a body; 14.2, installing a cavity; 14.3, a rotator; 14.4, an arc-shaped groove; 14.5, clamping jaws.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 1-7, a pressing device for machining an engine housing according to an embodiment of the present invention includes a base 1, a pressing mechanism 2 is mounted on the base 1, and the pressing mechanism 2 includes;
the frame body component 3 is fixed with the base 1 and is hinged with a cross rod 3.1;
the output end of the driving component 4 is connected with one end of the cross rod 3.1 through a connecting part 4.1;
the attaching component 5 is hinged with the other end of the cross rod 3.1;
the adaptive force component 6 is connected with the attaching component 5 and the cross bar 3.1;
when fixed, the plurality of cross bars receive the extrusion of the variable force component 6 to elastically extrude the different positions on the edge of the engine shell to realize the fixation.
When the engine shell is machined, the position of the engine shell is usually required to be fixed through a related clamp and the like, and when the engine shell is clamped and limited, linear extrusion or point extrusion is easy to occur when a clamping part is in contact with the engine shell, so that the situation that the extruded part of the engine shell is deformed due to overlarge pressure occurs, and self-adaptive adjustment cannot be performed according to the specific clamping situation.
Usually, the shell mouth border of engine housing all is fixed with the protruding frame that the round is used for the installation fixed, and the fixing device for engine housing machine tooling that this embodiment provided extrudes spacing with the protruding frame top of the engine housing that the cover was detained on base 1 to reach fixed spacing effect.
Specifically, the base 1 is horizontally arranged on a machining table top and used as a fixed foundation for placing an engine shell to be machined; the number of the frame assemblies 3 is multiple, the plurality of frame assemblies 3 are uniformly distributed on the outer side of the position where the engine shell is placed on the base 1, so that the position limitation of multiple positions of the engine shell is facilitated, the top of each frame assembly 3 is used for hinging and supporting the cross rod 3.1, the bottom height of the cross rod 3.1 is ensured to be larger than the top height of the base 1, meanwhile, the cross rod 3.1 is ensured to vertically take a hinged point with the frame assembly 3 as a circle center, the cross rod 3.1 can do arc motion, so that downward pressure can be applied to the engine shell when the cross rod 3.1 is pressed downwards, after the pressure is relieved, the cross rod 3.1 can leave the vertical direction of the engine shell, and the disassembly and material taking of the engine shell are not affected; the cross bar 3.1 plays a role in force bridging transmission, one end of the cross bar 3.1 is positioned at the upper part of the base 1, thereby ensuring that the force applied by the cross bar 3.1 can act on the upper part of the base 1, the driving component 4 is preferably a telescopic cylinder which has simple principle and structure, is easy to install and maintain, can provide stable and reliable driving force for the movement of the cross bar 3.1, the connecting part 4.1 plays a role of sliding connection between the cross bar 3.1 and the driving component 4, through the fixing of the connecting part 4.1 and the end part of the cross rod 3.1, when the driving component 4 is driven linearly, so that the cross rod 3.1 and the driving component 4 can generate a certain relative displacement in the horizontal direction, the cross rod 3.1 can be ensured to perform circular arc motion, and in addition, when the driving component 4 is contracted and reset, the cross rod 3.1 can be pulled to the initial position through the connecting part 4.1, the limit of the engine shell is completely released, and the engine shell is favorably taken down from the base 1; the bottom of the attaching component 5 is positioned to contact with the outer side surface of the engine shell to apply pressure, so that the engine shell is fixed; it plays the effect of deflection resistance between laminating subassembly 5 and horizontal pole 3.1 to adapt to power subassembly 6, promptly along with laminating subassembly 5 and the contained angle between the horizontal pole 3.1 is less, thereby it is then bigger to adapt to the resistance that power subassembly 6 played, thereby be favorable to ensureing that laminating subassembly 5 has firm extrusion force to the engine housing that is located on base 1, and horizontal pole 3.1 is through laminating the subassembly, thereby increased the area of contact when extrudeing with the engine housing, be favorable to avoiding causing linear extrusion and even some extruded condition to the engine housing, play the guard action to the engine housing of fixed state, and be favorable to more firm to the centre gripping to the engine housing.
In the use, after putting on engine housing and base 1, this moment through among the pressing means 2 horizontal pole 3.1 under the drive power effect of the provision of drive assembly 4, thereby make horizontal pole 3.1 extrude engine housing through laminating subassembly 5, make engine housing realize spacing fixed at base 1's top, meanwhile, the adaptive force subassembly 6 makes corresponding resistance size change along with the angle change between laminating subassembly 5 and the horizontal pole 3.1, thereby further be convenient for laminating subassembly 5 and engine housing carry out better laminating, be favorable to avoiding the extrusion face undersize that engine housing received when fixed and lead to engine housing surface to appear deforming, and keep good clamping area all the time, guarantee at the good stable effect of clamping in-process.
In another embodiment provided by the invention, the base 1 comprises an installation seat 1.1 fixed with the pressing mechanism 2, and the installation seat 1.1 is provided with a placing table 1.2 matched with the pressing mechanism 2 for use, so that the base 1 forms a step state, and a certain height difference exists between the engine shell placed on the placing table 1.2 and the pressing mechanism 2, so that the pressing mechanism 2 can apply pressure to the engine shell, and the fixation and the limiting of the engine shell are facilitated.
In another embodiment provided by the invention, the frame body assembly 3 comprises a support post 3.2 fixed with the base 1, the support post 3.2 is vertical to the base 1, the upper part of the support post 3.2 is movably hinged with a cross rod 3.1, the hinging range of the cross rod 3.1 on the support post 3.2 is between 5 degrees and 160 degrees, so that the cross rod 3.1 is ensured to have a good moving range, the cross rod 3.1 can be pressed and fixed on the engine shell and can also move for a certain angle, and the carrying path of the cross rod 3.1 is staggered after the cross rod is detached from the engine shell, thereby not influencing the normal detachment of the engine shell.
In another embodiment of the present invention, the driving assembly 4 includes a cylinder 4.2 fixed to the base 1, the cylinder 4.2 is disposed parallel to the pillar 3.2, and a maximum extension length of an output shaft of the cylinder 4.2 is greater than a maximum length of the pillar 3.2, so as to ensure that an acute angle is formed between one end of the crossbar 3.1 away from the cylinder 4.2 and the pillar 4.2, so that the crossbar 3.1 can apply a downward pressure to an engine housing on the base 1.
In another embodiment of the present invention, the connecting portion 4.1 includes a connecting frame 4.11 vertically fixed to the output end of the driving assembly 4, preferably, the connecting frame 4.11 is a U-shaped frame, a connecting frame 4.12 fixed to the end of the cross bar 3.1 is movably sleeved on the outer side of the connecting frame 4.11, the connecting frame 4.12 is a long rectangular frame, one end of the connecting frame 4.11 is movably inserted into the connecting frame 4.12 until the outer side of the middle portion of the connecting frame 4.11 contacts with the inner wall of the connecting frame 4.12, at this time, the connecting frame 4.11 is sleeved on the connecting frame 4.12 fixed to the end of the cross bar 3.1, meanwhile, the included angle between the side of the connecting frame 4.11 and the side of the connecting frame 4.12 is ninety degrees, the side of the connecting frame 4.12 is perpendicular to the top of the cylinder 4.2, the connecting frame 4.12 is located right above the top of the cylinder 4.2, the connecting frame 4.11 contacts with the connecting frame 4.12, and the inner wall of the connecting frame 4.12 is fastened to the outer side of the connecting frame 4.11, the connecting frame 4.11 slides along the inside of the connecting frame 4.12 during the movement, thereby functioning as a sliding connection between the driving assembly 4 and the cross bar 3.1.
In another embodiment provided by the invention, the attaching assembly 5 comprises a pressing plate 5.1 hinged with the other end of the cross rod 3.1, the pressing plate 5.1 is used for being extruded with the engine shell, the pressing plate 5.1 is a hard plate, and in a natural state, the bottom of the pressing plate 5.1 is parallel to the bottom of the cross rod 3.1, so that the pressing plate 5 can be changed adaptively according to the actual engine shell.
In another embodiment provided by the invention, a limiting plate 5.11 in surface contact with a cross bar 3.1 is fixed on an extrusion surface of a pressing plate 5.1, when the limiting plate 5.11 is in surface contact with the cross bar 3.1, the pressing plate 5.1 and the cross bar 3.1 are on the same horizontal plane, the limiting plate 5.11 limits the position of the pressing plate 5.1 in a natural static state, the width edge of the limiting plate 5.11 is flush with the width edge of the pressing plate 5.1, one end of the length edge of the limiting plate 5.11 is flush with the length edge of one end of the pressing plate 5.1, and the length edge of the other end of the limiting plate 5.11 is greater than the length edge of one end of the pressing plate 5.1, so that the limiting plate 5.11 is ensured to effectively keep the bottom of the pressing plate 5.1 and the cross bar 3.1 in a flush state under the blocking effect of the cross bar 3.1.
In another embodiment provided by the invention, the adaptive force component 6 comprises an arc-shaped cylinder 6.1 fixed with a pressure plate 5.1, an arc center of the arc-shaped cylinder 6.1 coincides with a hinge point of the pressure plate 5.1 and a cross rod 3.1, so that the arc-shaped cylinder 6.1 can move along with the pressure plate 5.1 in a concentric circle track, one end of the arc-shaped cylinder 6.1 is adapted with an arc rod 6.2 fixed with the cross rod 3.1, the arc rod 6.2 is connected with the arc-shaped cylinder 6.1 through an elastic part 6.3, the elastic part 6.3 is preferably a spring, in the actual use process, after the pressure plate 5.1 is contacted with an engine shell on a base 1, the angle deflection occurs between the pressure plate 5.1 and the cross rod 3.1, the pressure plate 5.1 is contacted with the surface of the engine shell, the cross rod 3.1 applies pressure to the engine shell through the pressure plate 3.1, the contact area of the cross rod 3.1 when being extruded with the engine shell is increased, the stability of the cross rod 3.1 to the engine shell is improved, and the acting force of the engine shell when the cross rod 3.1 is extruded, prevent that engine housing atress too gathers and receive plastic deformation, contained angle between clamp plate 5.1 and horizontal pole 3.1 diminishes the back, arc 6.2 takes place to peg graft along arc 6.1 and removes this moment, meanwhile, elastic component 6.3 that is arranged in arc 6.1 receives the extrusion of arc 6.2 and takes place elastic deformation, elastic component 6.3's deformation volume is also big, the interact according to power, thereby just also big more to arc 6.2's reaction force, make and arc 6.1 looks fixed clamp plate 5.1 resistance when rotating become bigger, be favorable to promoting to play limiting displacement to the engine housing that is located on base 1.
In another embodiment provided by the invention, the dust removing device further comprises a linked dust removing mechanism 7, the linked dust removing mechanism 7 comprises a spring air valve 7.1 communicated with the same air source of the air cylinder 4.2, the spring air valve 7.1 is used for controlling the on-off condition of the air flow of the air guide pipe 7.3, the air flow output end of the spring air valve 7.1 is communicated with the air guide pipe 7.3, the air flow output end of the air guide pipe 7.3 is communicated with an air dispersing box 7.2 fixed with the base 1, the air dispersing box 7.2 is arranged in parallel with the placing table 1.2, an air outlet used for blowing air on the air dispersing box 7.2 is linearly arranged in parallel with the placing table 1.2, the air flow of the air dispersing box 7.2 can be uniformly and accurately blown along the top of the placing table 1.2, all positions on the top of the placing table 1.2 can be covered by the air flow, a pressing block 7.4 fixed with the output shaft of the air cylinder 4.2 is arranged on the top of the valve column of the spring air valve 7.1, the pressing block 7.4 extrudes the valve 7 along with the motion state of the air cylinder 4.2, when the top of the spring air valve 7.1 is under the external pressure, the spring air valve 7.1 is in a communication state at the moment, so that the air flow of the same air source as the air cylinder 4.2 can enter the air guide pipe 7.3 through the spring air valve 7.1, then the air guide pipe 7.3 transmits the air flow to the air dispersing box 7.2, and the air flow is blown to the top of the base 1 through the air outlet of the air dispersing box 7.2, thereby timely removing the processing scraps on the top of the base 1, facilitating the stable placement of the engine shell at the next time, in practical use, when the output end of the air cylinder 4.2 contracts, thereby driving the connecting frame 4.12 in the connecting part 4.1 to extrude the valve column of the spring air valve 7.1 through the connecting frame 4.11, so that the spring air valve 7.1 is in an open state, so that the air flow of the same air source as the air cylinder 4.2 can quickly enter the air dispersing box 7.2 through the air guide pipe 7.3, and then the corresponding base 1 is subjected to air blowing and dust removal, when the output end of the air cylinder 4.2 extends, the acting force of the valve column acting on the spring air valve 7.1 disappears, and the spring air valve 7.1 is restored to the closed state and is prepared for the next forced extrusion of the valve column of the spring air valve 7.1.
A machining fixing device of an engine shell comprises a central part supporting mechanism, a datum hole positioning mechanism and a plurality of edge fixing mechanisms, wherein the edge fixing mechanisms are the pressing devices.
Further, the machining fixing device provided by the embodiment includes a central portion supporting mechanism, the central portion supporting mechanism includes a sleeve 8 and a pillar 9, the pillar 9 is movably sleeved in the sleeve 8, the top of the pillar 9 is used for supporting the central portion of the engine housing, the sleeve 8 is connected with the pillar 9 through a spring 11, the machining fixing device further includes a supporting assembly 9, the supporting and adjusting assembly 3 includes a slope block 10.1 and an adjusting rod 10.2, the slope block 10.1 is provided with a first supporting slope 12, the adjusting rod 10.2 is in threaded connection with the sleeve 8, and the rotating of the adjusting rod 10.2 drives the slope block 10.1 to enable the first supporting slope 12 to be in wedge-shaped fit with a second supporting slope 13 on the pillar 9 to realize supporting.
Specifically, the machining center of the engine shell machine is relatively weak, and the center of the bottom of the engine shell is supported by the supporting mechanism, so that the deformation resistance of the center of the bottom of the engine shell is enhanced, and the machining of the engine shell machine is facilitated.
Specifically, the side surface of the pillar 9 is attached to the inner wall of the sleeve 8 to ensure that the pillar 9 can finish linear motion along the inner wall of the sleeve 8, the cross sections of the pillar 9 and the sleeve 8 can be polygonal or circular with any matched edges, the bottom end of the sleeve 8 is fixed with a processing machine, the top end of the sleeve 8 is flush with the top of a correspondingly processed workbench, the spring 11 can lift the pillar 9 in the sleeve 8 for a certain distance, so that one end of the pillar 9 protrudes out of one end of the sleeve 8, the pillar 9 is convenient to contact with the central part of the engine shell in advance, the inclined plane block 10.1 in the supporting assembly 9 plays a supporting and limiting role between the pillar 9 and the sleeve 8, and particularly the inclined plane block 10.1 plays a limiting role on the pillar 9, so that the central part of the engine shell is prevented from being extruded to deform in the processing process, and can be matched and supported according to the actual height position of the pillar 9, the adjusting rod 10.2 can flexibly control the position of the inclined plane block 10.1 in the horizontal direction, and has good control effect on the inclined plane block 10.1.
Adjust pole 10.2, it and sleeve 8 spiro union, be provided with the screw on the sleeve, it passes through the external screw thread spiro union in the screw, the axial of adjusting the pole is perpendicular or the setting of basically perpendicular with the axial of pillar, the spiro union of adjusting the pole rotates and makes it along axial reciprocating motion, this axial reciprocating motion drives inclined plane piece 10.1 reciprocating motion, the reciprocating motion of inclined plane piece is so that first support inclined plane 12 and the second on the pillar 9 supports inclined plane 13 wedge-shaped cooperation or leave, thereby restriction pillar 9's vertical direction's home range.
When the engine shell is used, after the engine shell is fixed on the table top of a processing machine table, the strut 9 is under the elastic action of the spring 11 at the moment, the top of the strut 9 is in contact with the central part of the engine shell, then the inclined plane block 10.1 moves under the action of the adjusting rod 10.2, so that the first supporting inclined plane 12 is in contact with the second supporting inclined plane 13 on the strut 9, the central part of the engine shell is supported, the whole process is simple and convenient to operate, the actual height position of the central part of the engine shell can be adapted, the engine shell has good adaptability, the situation that the thinner part of the central part of the engine shell is prone to concave deformation during machining is favorably prevented, and meanwhile, the problem that an existing thread supporting mechanism is prone to looseness during machining high-frequency vibration is effectively avoided.
Further this benchmark hole positioning mechanism includes central positioning mechanism 14, central positioning mechanism 14 includes body 14.1, solid of revolution 14.3 and at least three clamping jaw 14.5, wherein body 14.1 sets up on base 1, body 14.1 has seted up installation cavity 14.2 inside, solid of revolution 14.3, it can rotate in installation cavity 14.2, be provided with a plurality of arc walls 14.4 on solid of revolution 14.3, each arc wall 14.4 is kept away from the central axis of solid of revolution 14.3 from one end to the other end gradually, at least three clamping jaw 14.5, it and body 14.1 swing joint, the one-to-one sliding connection of one end of a plurality of clamping jaws 14.5 is in a plurality of arc walls 14.4, the rotation of solid of revolution 14.3 drives a plurality of clamping jaws 14.5 synchronous motion, solid of revolution 14.3 is used for arranging with the benchmark hole coaxial line on the engine housing, and the other end of three clamping jaw 14.5 all butts on the internal wall in benchmark hole.
When the engine shell is machined, the position of the engine shell cannot be conveniently determined, and the position of the engine shell can be quickly determined by the aid of the machined reference hole aligning mechanism, so that time is saved.
Specifically, the machining fixing device provided in this embodiment is used for positioning the engine housing during clamping during various machining (car washing, planing, grinding, and the like), generally speaking, when the engine housing has a large through hole (such as a through hole of a spindle), the hole is used as a reference hole during machining to perform positioning alignment for clamping, and the hole is positioned, so that the first-step positioning of the engine housing can be realized, the base 1 is used for placing the engine housing to be machined, the base 1 is a plate-shaped block, and the bottom of the base is in a supporting and suspending state through a supporting leg or a cushion block, which is the prior art and is not described herein again; the central positioning mechanism 14 is used for being inserted into a reference hole of the engine shell, so that the engine shell can determine a reference position conveniently; the body 14.1 is a solid hard block, preferably a hard metal block, and has good deformation resistance, the body 14.1 is fixedly installed on the top of the base 1 in a penetrating manner, so that the top of the body 14.1 is flush with the top of the base 1, the contact surface between the clamping jaw 14.5 and the engine shell is conveniently increased, and meanwhile, the next installation work of related parts at the bottom of the body 14.1 can be smoothly carried out, preferably, the installation cavity 14.2 is a cylindrical closed cavity, and the installation cavity 14.2 is located at the center of the body 14.1, so that the rotation of the revolving body 14.3 is conveniently matched; the plurality of arc-shaped grooves 14.4 are all used for restraining the moving track of the clamping jaw 14.5, the plurality of arc-shaped grooves 14.4 are uniformly distributed at equal intervals by taking the revolving body 14.3 as a circle center, the horizontal end of the clamping jaw 14.5 is vertical to the central axis of the revolving body 14.3, one end of the horizontal end of the clamping jaw 14.5 is in adaptive clamping with the arc-shaped groove 14.4 through a rotating rod, the rotating rod is vertical to the clamping jaw 14.5, the horizontal end of the clamping jaw 14.5 is parallel to the top of the revolving body 14.3, the vertical end of the clamping jaw 14.5 movably penetrates through the top of the mounting cavity 14.2, the clamping jaw 14.5 and the cavity wall of the mounting cavity 14.2 are in sliding clamping in a direction vertical to the axis of the revolving body 14.3, the vertical end of the clamping jaw 14.5 is in contact with the inner wall of a reference hole of a motor shell, when the revolving body 14.3 rotates, only one direction freedom degree exists at the vertical end of the clamping jaw 14.5, so that one end of the horizontal end of the clamping jaw 14.5 slides along the arc-shaped groove 14.4 through the rotating rod, and the groove 14.4 presses against the groove wall of the clamping jaw 14.5, the vertical ends of the clamping jaws 14.5 make linear motion on the body 14.1, so that the positions of the clamping jaws 14.5 are changed, meanwhile, the same parts of the clamping jaws 14.5 are on the same annular line, so that the moving distances of the clamping jaws 14.5 are kept consistent, the distances between the ends of the clamping jaws 14.5 and the rotary body 14.3 are equal, anti-slip sleeves are fixed on the side surfaces of the clamping jaws 14.5, so that the inner wall of a reference hole of an engine shell is protected, the inner wall of the reference hole of the engine shell is prevented from being damaged in the extrusion process of the clamping jaws 14.5, in a final state, the rotary body 14.3 and the reference hole on the engine shell are coaxially arranged, so that the positioning alignment of the reference hole is realized, in a positioning initial state, an operator covers the base on the engine shell through the reference hole of the engine shell and then drives the rotary body to rotate, and because the distances between the axes of the clamping jaws 14.5 and the rotary body 14.3 are the same, so that the inner wall of the reference hole of the engine shell is extruded through the clamping jaws 14.5, the center of the reference hole in the engine shell and the axis of the revolving body 14.3 are finally in a superposed state, and the alignment effect of the reference hole machined in the engine shell, namely the final state, is achieved.
In the practical use process, the revolving body 14.3 rotates in the installation cavity 14.2, the clamping jaw 14.5 which is in sliding connection with the arc-shaped groove 14.4 on the revolving body 14.3 moves until the clamping jaw 14.5 is extruded with the inner wall of the reference hole of the engine shell, so that the position of the engine shell is quickly determined, the whole process is simple and convenient to operate, the inner wall of the reference hole of the engine shell can be simultaneously extruded under stress, the stress is uniform, and the engine shell can be conveniently locked at a target position.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (8)
1. A hold-down device for machining an engine shell comprises a base (1), and is characterized in that a pressing mechanism (2) is mounted on the base (1), and the pressing mechanism (2) comprises a pressing mechanism body and a pressing mechanism body;
a frame body component (3) which is fixed with the base (1) and is hinged with a cross bar (3.1);
the output end of the driving component (4) is connected with one end of the cross rod (3.1) through a connecting part (4.1);
the attaching component (5) is hinged with the other end of the cross rod (3.1);
a force-adaptive component (6) connected to the attaching component (5) and the cross bar (3.1);
when the engine shell is fixed, the cross rods receive the extrusion of the adaptive force component (6) and are elastically extruded on different positions on the edge of the engine shell to realize fixation, the attaching component (5) comprises a pressing plate (5.1) hinged to the other end of the cross rod (3.1), the pressing plate (5.1) is used for extruding the engine shell, the adaptive force component (6) comprises an arc-shaped cylinder (6.1) fixed to the pressing plate (5.1), one end of the arc-shaped cylinder (6.1) is matched with an arc rod (6.2) fixed to the cross rod (3.1), and the arc rod (6.2) is connected with the arc-shaped cylinder (6.1) through an elastic piece (6.3).
2. The pressing device according to claim 1, characterized in that the base (1) comprises a mounting seat (1.1) fixed with the pressing mechanism (2), and a placing table (1.2) matched with the pressing mechanism (2) is arranged on the mounting seat (1.1).
3. Pressing device according to claim 1, characterized in that the frame assembly (3) comprises a pillar (3.2) fixed to the base (1), and the upper part of the pillar (3.2) is movably hinged to the cross bar (3.1).
4. Pressing device according to claim 1, characterized in that the drive assembly (4) comprises a cylinder (4.2) fixed to the base (1).
5. The pressing device according to claim 1, wherein the connecting portion (4.1) comprises a connecting frame (4.11) fixed to the output end of the driving assembly (4), a connecting frame (4.12) fixed to the end of the cross bar (3.1) is movably sleeved on the outer side of the connecting frame (4.11), and the connecting frame (4.11) slides along the inside of the connecting frame (4.12) in the moving process.
6. The pressing device according to claim 1, characterized in that a limiting plate (5.11) in surface contact with the cross bar (3.1) is fixed on the pressing surface of the pressing plate (5.1), and when the limiting plate (5.11) is in surface contact with the cross bar (3.1), the pressing plate (5.1) and the cross bar (3.1) are on the same horizontal plane.
7. The pressing device according to claim 4, further comprising a linkage type dust removing mechanism (7), wherein the linkage type dust removing mechanism (7) comprises a spring air valve (7.1) communicated with the same air source of the air cylinder (4.2), an air flow output end of the spring air valve (7.1) is communicated with an air guide pipe (7.3), an air flow output end of the air guide pipe (7.3) is communicated with an air dispersing box (7.2) fixed with the base (1), a pressing block (7.4) fixed with an output shaft of the air cylinder (4.2) is arranged at the top of a valve column of the spring air valve (7.1), and the pressing block (7.4) presses the valve column of the spring air valve (7.1) along with the movement state of the air cylinder (4.2).
8. A machining fixture for an engine casing comprising a central portion support means, a datum hole locating means and a plurality of edge fixing means, wherein the edge fixing means is a hold down device as claimed in any one of claims 1 to 7.
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| CN202110494292.9A CN113172452B (en) | 2021-05-07 | 2021-05-07 | Machining pressing device and machining fixing device of engine shell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110494292.9A CN113172452B (en) | 2021-05-07 | 2021-05-07 | Machining pressing device and machining fixing device of engine shell |
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| CN113172452B true CN113172452B (en) | 2022-03-08 |
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| CN114131393A (en) * | 2020-04-02 | 2022-03-04 | 广东原点智能技术有限公司 | Elastic cutter clamping mechanism |
| CN114131111B (en) * | 2021-11-24 | 2022-11-18 | 六安庆超建筑设计有限公司 | Section bar cutting device for building |
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| CN105149985A (en) * | 2015-09-08 | 2015-12-16 | 安徽合力股份有限公司 | Clamp for processing gearbox body of forklift |
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