CN114473565B - A comprehensive process fixture for machining engine connecting rods - Google Patents
A comprehensive process fixture for machining engine connecting rods Download PDFInfo
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- CN114473565B CN114473565B CN202110715751.1A CN202110715751A CN114473565B CN 114473565 B CN114473565 B CN 114473565B CN 202110715751 A CN202110715751 A CN 202110715751A CN 114473565 B CN114473565 B CN 114473565B
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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
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Abstract
本发明涉及一种加工发动机连杆综合工序夹具，用于机械加工领域。该夹具，包括与夹具配合工作的旋转四轴和圆盘刹车尾座，还包括底板、四轴垫板、尾座垫板、四轴连接板、尾座连接板、旋转桥板、小头定位装置、大头定位装置和大头夹紧装置。本产品能自动进行夹紧工件、夹紧效果好，且定位连杆大头和小头的中心距可调节，以适应不同型号的工件的加工，从而大大提高了生产效率的用于加工发动机连杆钻镗小头孔倒角、粗镗大头孔倒角、铣反面沉窝、铣承压面、钻孔、攻螺纹孔的综合夹具。
The present invention relates to a comprehensive process fixture for machining engine connecting rods, which is used in the field of mechanical machining. The fixture includes a rotating four-axis and a disc brake tailstock that work in cooperation with the fixture, and also includes a base plate, a four-axis pad, a tailstock pad, a four-axis connecting plate, a tailstock connecting plate, a rotating bridge plate, a small head positioning device, a large head positioning device and a large head clamping device. This product can automatically clamp the workpiece, has a good clamping effect, and the center distance between the large head and the small head of the positioning connecting rod can be adjusted to adapt to the machining of workpieces of different models, thereby greatly improving the production efficiency of the comprehensive fixture used for machining engine connecting rods, drilling and boring small head hole chamfers, rough boring and chamfering of large head holes, milling reverse surface sinks, milling pressure-bearing surfaces, drilling holes, and tapping threaded holes.
Description
Technical Field
The invention relates to a comprehensive working procedure clamp for machining an engine connecting rod, which is used in the field of machining.
Background
In the prior art, the clamp for machining the connecting rod joint surface of the engine and drilling and tapping the bolt hole mostly adopts a single-station or less-station arrangement mode, so that the production efficiency is relatively low, and therefore, in order to improve the production efficiency, as disclosed in China patent No. 201320333640.5, the clamp for machining the connecting rod joint surface of the engine comprises a clamp jig plate, a bolt surface positioning block, a fastening screw, a positioning mandrel, a big-head semicircular flat pad, a bolt surface clamping screw, a small-head circular flat pad, a clamping screw positioning block, a small-head side positioning block, a small-head top positioning block, a big-head top positioning block and a small-head clamping screw, wherein the clamp jig plate is provided with the big-head semicircular flat pad and the small-head circular flat pad, the big-head and the small-head are respectively placed above the clamping jig, the flat pad has the same thickness, the positioning mandrel for threaded connection is arranged on the big-head semicircular flat pad, one side of the big-head semicircular flat pad is provided with the bolt surface positioning block, the fastening screw is fixed on the other side, the big-head semicircular flat pad is provided with the bolt surface clamping screw, the small-head side is arranged below the big-head semicircular flat pad, the small-head positioning block is provided with the small-head side, the small-head clamping screw is also arranged on the small-head side of the small-head side clamping screw, the small-head positioning block is fixedly clamped on the small-head positioning block, and the small-head top positioning block is fixedly clamped on the small-head round positioning block, and is fixedly provided with the small-head positioning block.
The clamping device adopts the fastening screw to clamp the side face of the workpiece, when clamping each time, the fastening screw is required to be screwed down one by one to clamp the workpiece, so that the clamping operation is complicated, the working efficiency is low, the clamping plate is locked by screwing down the locking nut to clamp the workpiece, and the clamping force is limited by manually screwing down the locking nut, so that the workpiece is clamped by screwing down the fastening screw, the clamping force is insufficient, the workpiece possibly loosens, the machining is difficult in the subsequent machining, the machining error is increased, the workpiece can not reach the required precision, the manufacturing cost is greatly increased, the center distance between the big end and the small end of the positioning connecting rod is not adjustable, the clamp can only process connecting rods of single type, the machining of connecting rods of different types can not be adapted, the universality is poor, and the working efficiency is low.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the clamp which can automatically clamp a workpiece, has good clamping effect, and can adjust the center distance between the big end and the small end of the positioning connecting rod so as to adapt to the machining of workpieces of different types, thereby greatly improving the production efficiency and being used for machining the chamfer of the drilling and boring small end hole, the chamfer of the rough boring big end hole, milling the back surface, milling the bearing surface, drilling and tapping the threaded hole of the connecting rod of the engine.
The invention adopts the following technical scheme:
The utility model provides a processing engine connecting rod synthesizes process anchor clamps, includes bottom plate, four-axis backing plate, tailstock backing plate, rotatory four-axis, disc brake tailstock, four-axis connecting plate, tailstock connecting plate, rotatory lamina bridge, and the little head location of locating on rotatory lamina bridge of a plurality of is fixed to be set up in a row, the little head location device of a plurality of movable setting on the little head location of rotatable lamina bridge and the clamping device who is used for pressing from both sides tight work piece, a big head location device includes and supplies big head location device base, big head face push positioning and the big head location device base subassembly that supports connecting rod terminal surface location, a little head location device is including supplying little head appearance location to support little head terminal surface on the connecting rod, clamping device is by hydro-cylinder drive clamp work piece.
The clamping device of the clamp is driven by the oil cylinder to clamp the workpiece, the workpiece can be automatically clamped, the clamping effect is good, the machining precision of the workpiece is greatly improved, the positioning device for positioning the small end of the connecting rod can be movably arranged, and the center distance between the large end and the small end can be adjusted relative to the positioning device of the large end, so that the clamp is suitable for machining workpieces with different space sizes, can be used for machining connecting rods with various models, has good practicability and greatly improves the machining efficiency.
Preferably, the clamping device comprises a bidirectional clamping piece and a unidirectional clamping piece, wherein the bidirectional clamping piece and the unidirectional clamping piece are driven by the oil cylinder to clamp the workpiece, the adjacent workpiece is clamped by the bidirectional clamping piece, and the outer sides of the workpieces positioned at the two end parts are clamped by the unidirectional clamping piece.
Preferably, the bidirectional clamping piece comprises a clamping block I, a support column I for supporting the clamping block I and an oil cylinder I for clamping and adjusting the steering of the clamping block I, wherein the clamping block I comprises a clamping part I and a clamping part II which are symmetrically arranged and a connecting part I connected with the upper end of the support column I, the clamping part II and the connecting part I are of an integrated structure, a shaft hole I is arranged at the lower end of the connecting part, a shaft hole II matched with the shaft hole I is arranged at the upper end of the support column I, a movable pin I for connecting the clamping block I and the support column I is arranged on the shaft hole I and the shaft hole II, and the clamping block I rotates around the support column I by taking the movable pin I as a shaft to clamp and unclamp a workpiece.
Preferably, the unidirectional clamping piece comprises a clamping block II, a support column II for supporting the clamping block II and an oil cylinder II for clamping and adjusting the steering of the clamping block II, the clamping block II comprises a clamping part III, a supporting part and a connecting part II connected with the upper end of the support column II, the clamping part III, the supporting part and the connecting part II are of an integrated structure, the lower end of the connecting part II is provided with a shaft hole III, the upper end of the support column II is provided with a shaft hole IV matched with the shaft hole in a three-phase manner, the shaft hole III and the shaft hole IV are provided with a movable pin II for connecting the clamping block II and the support column II, and the clamping block II uses the movable pin II as a shaft to rotate around the support column II to clamp and loosen a workpiece.
Preferably, the first support column for supporting the support portion on the second clamping block is provided on the support plate. The two-way clamping piece comprises a clamping part I and a clamping part II which can clamp the end parts of the workpieces adjacently arranged at the same time, so that the installation space is greatly saved, the clamping effect is good, the clamping and loosening of the workpieces are realized by the driving force provided by the oil cylinder II, the clamping and loosening of the workpieces are realized by the driving force provided by the oil cylinder I, the clamping is not required to be realized manually, the working efficiency is greatly improved, the clamping effect is good, and the preparation for processing the workpieces is better. When the workpiece is clamped, the clamping blocks are driven to clamp the end parts of the workpiece relatively, after the workpiece is machined, the second oil cylinder drives the clamping blocks to rotate 90 degrees around the second support column by taking the second movable pin as an axis, the second clamping blocks leave the end parts of the workpiece, the workpiece is loosened, the machined workpiece can be taken down, and the machining is repeated in such a way, so that batch machining of the workpiece is realized. When the workpiece is clamped, the first clamping block is driven to clamp the end parts of the two connected workpieces relatively, when the machining is finished, the first clamping block is driven by the first oil cylinder to rotate 90 degrees around the second support column by taking the first movable pin as an axis, the first clamping block leaves the end part of the workpiece, and then the workpiece is loosened, the machined workpiece can be taken down, and the process is repeated to realize batch machining of the workpiece, and the clamping and loosening of the corner cylinder are carried out to 90 degrees, so that the workpiece is convenient to assemble and disassemble and is greatly improved.
Preferably, the first clamping part, the second clamping part and the third clamping part are respectively provided with a big-end pressing block.
The clamping part I, the clamping part II and the clamping part III are respectively provided with the big-end pressing blocks, when workpieces with different sizes are processed, the thickness of the workpiece connecting rod is different, the relative positions of the two-way clamping piece and the one-way clamping piece and the connecting rod can be adjusted through the big-end pressing blocks according to the requirements of the connecting rod on the clamping piece with different thicknesses, the workpieces are clamped, the large-end pressing blocks are matched with the processing of the connecting rods with different types, the structure is simple, the flexibility is good, the clamping device is suitable for processing of various connecting rods with similar structures, and the research and development time and the manufacturing cost of the clamping device are greatly saved.
The small head positioning device is of an integrated structure and comprises a small head positioning movable upper plate, a small head positioning movable upper plate T-shaped nut, a small head appearance positioning and supporting connecting rod small head positioning V-shaped and end face positioning blocks, a small head positioning base for supporting the small head end face on the connecting rod and a small head clamping device, wherein the small head positioning movable upper plate T-shaped nut can play a role in positioning and fixing by being embedded into a rotatable bridge plate T-shaped groove.
The small head positioning and moving upper plate, the small head positioning base, the small head shape positioning and supporting connecting rod small head end surface positioning block and the small head pressing oil cylinder device are integrally structured, the structure is simple, the installation is convenient, the center distance between the small head positioning device and the large head positioning device is adjusted according to the requirement of the size of a workpiece connecting rod, the positioning connecting rod is carried out, when the center distance between the small head positioning device and the large head positioning device is adjusted to the required center distance, the T-shaped nut penetrates through the mounting hole on the adjusting block, the lower end of the T-shaped nut is embedded into the T-shaped groove, the T-shaped nut is further screwed relatively, the machining of other connecting rods with different types is regulated in a similar mode, the flexibility is good, the clamp is applicable to machining of various connecting rods with similar structures, the clamp integrates the previous 1, rough boring and large head hole and chamfer, 2, boring and small head hole chamfer, 3, machining reverse face socket sinking, 4 and machining the bearing face drilling and tapping procedures, the four clamps are integrated into a sequence clamp, the research and development time and the manufacturing cost are greatly saved, and the cost of the machine tool is saved.
The small head is positioned in an inverted cone fixed V shape.
The big end positioning device is a self-centering mechanism.
The small end positioning device is a self-centering mechanism, has the functions of positioning and supporting the workpiece, can prevent the workpiece from rotating, and can better position the workpiece connecting rod.
Preferably, the four-axis support device also comprises a four-axis support plate for supporting the rotary four-axis, one side of the four-axis support plate is supported on the bottom surface of the rotary four-axis, one side of the four-axis support plate is fixed on the bottom plate, the four-axis support plate comprises a tailstock support plate for supporting the disc brake tailstock, one side of the tailstock support plate is supported on the bottom surface of the disc brake tailstock, and one side of the tailstock support plate is fixed on the bottom plate.
Drawings
In order to more clearly illustrate the embodiments of the invention or the solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it being obvious that the drawings in the description below are some embodiments of the invention and that other drawings may be obtained from them without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the structure of the product.
Fig. 2 is a schematic diagram of the structure of the product.
Fig. 3 is a schematic diagram of a small end positioning mechanism of the product.
Fig. 4 is a front view of an embodiment of the present product after clamping by the clamp link.
Fig. 5 is a schematic structural view of the clamping in the positioning section of the large end face of the product.
Fig. 6 is a schematic structural view of the small end face and the outline positioning mechanism of the product.
Fig. 7 is an exploded view of the present product, the large end bi-directional clamp.
Fig. 8 is an exploded view of the present product, the large end one-way clamp.
Some reference numerals illustrate a rotary four-axis 1, a disc brake tailstock 2, a base plate 100, a four-axis backing plate 200, a tailstock backing plate 300, a four-axis connecting plate 400, a tailstock connecting plate 500, a rotatable bridge plate 600, a small head positioning device 700, a large head positioning device 800, and a large head clamping device 900.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples:
As shown in fig. 1 to 4, as an embodiment of the present invention, a jig for machining a small-end hole chamfer of an engine boring, a large-end hole chamfer of a rough boring, a back face countersinking, a pressure face milling, a drilling, a tapping, a hole milling, includes a base plate 100, a rotary four-axis 1 (i.e., CNC large-aperture rotary table is a purchasing standard) provided on the base plate 100 and fixed to a four-axis backing plate 200 in parallel with the base plate 100, a disc brake tailstock 2 (purchasing standard) fixed to a tailstock backing plate 300, a four-axis connecting plate 400 fixed to the rotary four-axis, a tailstock connecting plate 500 fixed to the disc brake tailstock 2, and a rotatable bridge 600 fixed to the four-axis connecting plate 400 and the tailstock connecting plate 500, a plurality of large-end positioning devices 800 provided in a row fixed to the rotatable bridge 600, A plurality of small head positioning devices 700 which are movably arranged on the rotatable bridge plate 600 in rows and a big head clamping device 900 which is arranged on the rotatable bridge plate 600 and is used for clamping a workpiece, wherein one big head positioning device 800 comprises a big head positioning device base 801 for positioning in big head appearance parts, a big head positioning end face block 802 for pushing and positioning the big head positioning end face, a big head positioning pressing plate 803 for supporting and positioning the end face of a connecting rod and a big head positioning device base 801 for supporting the big head end face on the connecting rod, and the other small head positioning device 700 comprises a small head positioning and moving upper plate 701, a small head positioning and moving upper plate T-shaped nut 702, a small head positioning device base 801 for supporting the big head positioning and moving upper plate T-shaped nut 702, the small end shape positioning and supporting the 704 of the small end face on the connecting rod, Small head positioning base 703 supporting small head end face on connecting rod and small head clamping device 1000, the large head positioning device 800, large head positioning device base 801 is fixed on rotatable bridge plate 600 by screw, large head positioning end face block 802 is fixed on large head positioning device base 801 by screw, large head positioning press plate 803 is fixed on transmission shaft 804 by hole, transmission shaft 804 is fixed on large head positioning device base 801 hole, left middle division press plate 805 is fixed on middle division transmission shaft 806 by hole, middle division transmission shaft 806 is fixed on large head positioning device base 801 by hole, right middle division press plate 807 is fixed on middle division transmission shaft 806 by hole, left and right middle division press plates 805807 realize automatic middle division clamping workpiece by self-centering cylinder 1200, the big head positioning pressing plate 803 pushes the clamping workpiece through the self-centering oil cylinder 1200, the small head positioning device 700, the small head positioning moving upper plate 701 is connected with the rotatable bridge plate 600 through a small head positioning moving upper plate T-shaped nut 702, adjustment of connecting rods with different center distances is realized, the small head positioning base 703 is fixed on the small head positioning moving upper plate 701 through threads, the small head positioning V-shaped and end surface positioning blocks 704 are fixed on the small head positioning base 703 through threads, the small head clamping device 1000 is fixed on the small head positioning moving upper plate 701 through threads, a workpiece such as an engine connecting rod is positioned through a big head positioning device 800 and a small head positioning device 700, and then the small head positioning base 703 is fixed on the small head positioning base 703 through threads, the small head positioning V-shaped and end surface positioning blocks 1000 are fixed on the small head positioning moving upper plate 701 through threads, and the small head positioning device 900 is used for positioning a workpiece such as an engine connecting rod, The small end clamping device 1000 clamps the two ends of the big end and one section of the small end of the engine connecting rod to clamp, and can perform the working procedures of drilling, boring and positive and negative chamfering on the big end and the small end of the engine connecting rod, when the four-axis rotation is rotated by 90 degrees, the disc brake tailstock is fixed to mill the sinking nest on the back surface of the engine connecting rod, after the machining is completed, after the disc brake tailstock is loosened, when the four-axis rotation is rotated to 270 degrees, the disc brake tailstock is fixed to drill and attack on the bearing surface, the drilling bolt through hole and the bolt hole on the engine connecting rod.
In this embodiment, as shown in fig. 5 and 6, the big head clamping device 900 includes a bidirectional clamping member 901 and a unidirectional clamping member 902 which are driven by an oil cylinder to clamp a workpiece, the adjacent workpiece is clamped by the bidirectional clamping member 901, the workpiece at two ends is clamped by the unidirectional clamping member 902 to the big end of the engine connecting rod, the small head clamping device 1000 includes a left bidirectional clamping member 1001 and a right bidirectional clamping member 1002 which are driven by the oil cylinder to clamp the workpiece, and the adjacent workpiece is clamped by the left bidirectional clamping member 1001 and the right bidirectional clamping member 1002 to the small end of the engine connecting rod.
As shown in fig. 7, the bidirectional clamping piece 901 includes a clamping block 903, a support column 904 supporting the clamping block 903, and a cylinder 905 for clamping and adjusting the steering direction of the clamping block 903, the clamping block 903 includes a clamping portion 9031 and a clamping portion 9032 which are symmetrically arranged, and a connecting portion 9033 connected to the upper end of the support column 904, the clamping portion 9031, the clamping portion 9032 and the connecting portion 9033 are in an integral structure, a shaft hole 9034 is provided at the lower end of the connecting portion 9033, a shaft hole two 9041 matching with the shaft hole one 9034 is provided at the upper end of the support column 904, a movable pin 906 connecting the clamping block 903 and the support column one 904 is mounted on the shaft hole one 9034 and the shaft hole two 9041, and the clamping block 903 rotates around the support column one 904 with the movable pin 906 as a shaft to clamp and unclamp a workpiece.
As shown in fig. 8, the unidirectional clamping member 902 includes a second clamping block 907, a second support column 908 supporting the second clamping block 907, and a second cylinder 909 for clamping and adjusting the steering direction of the second clamping block 907, the second clamping block 907 includes a third clamping portion 9071, a second support portion 9072, and a second connecting portion 9073 connected to the upper end of the second support column 908, the third clamping portion 9071, the second support portion 9072, and the second connecting portion 9073 are integrally configured, a third shaft hole 9074 is provided at the lower end of the second connecting portion 9073, a fourth shaft hole 9081 matching with the third shaft hole 9074 is provided at the upper end of the second support column 908, a second movable pin 910 connecting the second clamping block 907 and the second support column 908 is installed on the third shaft hole 9074 and the fourth shaft hole 9081, the second clamping block 907 rotates around the second movable pin 908 as a shaft to clamp and unclamp a workpiece, and balance the second support rod 908 is provided for matching with the support of the second support column, the first support column 904 supporting the second support block 9072 is further provided on the support plate 600, the first support column 904 is further improved, and the clamping force of the second clamping block 907 can be further improved, and the second clamping block is not matched with a gasket or a different type of gasket is manufactured by adding the second clamping member.
During clamping, workpieces at two ends of the outer side are respectively clamped by the unidirectional clamping pieces 902, the workpieces at two ends are clamped at the outer side through the clamping parts III 9071 of the unidirectional clamping pieces 902, meanwhile, in order to improve balance and clamping force of the unidirectional clamping pieces 902, the first support column 904 is arranged at the lower end of the supporting part 9072 and bears the clamping force to clamp the workpieces better, the clamping parts I9031 and II 9032 of the bidirectional clamping pieces 901 can clamp the ends of the workpieces adjacently arranged at the same time, so that the structure is compact, the installation space is greatly saved, the clamping effect is good, the unidirectional clamping pieces 902 are provided with driving force by the second oil cylinder 909 to clamp and unclamp the workpieces, the bidirectional clamping pieces 901 are provided with driving force by the first oil cylinder 905 to clamp and unclamp the workpieces, the clamping is not needed to be realized manually, the working efficiency is greatly improved, and the clamping effect is good, so that the workpieces are better processed. When the workpiece is clamped, the second clamping block 907 is driven to clamp the end part of the workpiece relatively, after the workpiece is machined, the second clamping block 907 is driven by the second oil cylinder 909 to rotate 90 degrees around the second support column 910 by taking the second movable pin 910 as an axis, the second clamping block 907 leaves the end part of the workpiece, the workpiece is loosened, the machined workpiece can be taken down, and the process is repeated to realize batch machining of the workpiece. When the workpiece is clamped, the clamping block 903 is driven to clamp the end parts of the two workpieces relatively, when the machining is finished, the clamping block 903 is driven by the oil cylinder 905 to rotate around the support column 906 by 90 degrees by taking the movable pin 906 as an axis, the clamping block 903 leaves the end part of the workpiece, the workpiece is loosened, the machined workpiece can be taken down, the machining is repeated in such a way, the batch machining of the workpiece is realized, and the clamping and loosening of the corner cylinder is 90 degrees, so that the workpiece is convenient to assemble and disassemble and is greatly improved.
In this embodiment, in order to adapt to the machining of the engine connecting rod with different specifications and models, the first clamping part 9031, the second clamping part 9032 and the third clamping part 9071 are respectively provided with a big-end pressing block 912, and according to the machining requirement of the engine connecting rod, the clamping effect of the first clamping part 9031, the second clamping part 9032 and the third clamping part 9071 on the workpiece engine connecting rod is adjusted by adding or reducing the big-end pressing blocks 912, in this embodiment, the big-end pressing blocks 612 are movably arranged on the first clamping part 9031, the second clamping part 9032 and the third clamping part 9071, and the big-end pressing blocks 912 are detached from or installed on the first clamping part 9031, the second clamping part 9032 and the third clamping part 9071 through fasteners. When workpieces with different sizes are processed, because the thicknesses of the workpiece connecting rods are different, according to the requirements of the connecting rods on the clamping pieces with different thicknesses, the relative positions of the bidirectional clamping piece 901, the unidirectional clamping piece 902 and the connecting rods can be adjusted through the big-end pressing block 912, the workpieces are clamped, the connecting rods with different types are matched through the big-end pressing block 912, the structure is simple, the flexibility is good, the clamp is applicable to processing of various connecting rods with similar structures, and the research and development time and the manufacturing cost of the clamp are greatly saved.
In this embodiment, as shown in fig. 6, the small head positioning device 700, the small head positioning moving upper plate 701 is connected with the rotatable bridge plate 600 through the small head positioning moving upper plate T-shaped nut 702, so as to implement adjustment of connecting rods with different center distances, the small head positioning base 703 is fixed on the small head positioning moving upper plate 701 through threads, the small head positioning V-shaped and end surface positioning block 704 is fixed on the small head positioning base 703 through threads, the small head clamping device 1000 is fixed on the small head positioning moving upper plate 701 through threads, the distance between the integral mechanism is adjusted by tightening bolts on the small head positioning moving upper plate 701 and fixing the positioning T-shaped nut 702, so that installation and clamping of connecting rods with different center distances can be implemented, and the processing of connecting rods with other different types can be adjusted in a similar manner, so that the flexibility is good, the device is applicable to processing of connecting rods with similar structures, and the development time and the manufacturing cost of the clamp are greatly saved.
In this embodiment, the small end appearance location is the fixed V-arrangement of reverse taper, big end positioner is from centering branch well mechanism, plays location and support work piece effect, and big end is from centering branch well mechanism can also prevent the work piece rotation, the better location work piece connecting rod.
As shown in fig. 1, the four-axis brake system further comprises a rotary four-axis (purchase standard) for supporting the supporting base plate 100 and fixing the parallel base plate 100 on the four-axis base plate 200, a disc brake tailstock (purchase standard) fixed on the tailstock base plate 300, a four-axis connecting plate 400 fixed on the rotary four-axis, a tailstock connecting plate 500 fixed on the disc brake tailstock, and a rotatable bridge plate 600 fixed on the four-axis connecting plate 400 and the tailstock connecting plate 500, which plays a role of reinforcing, improves the firmness of the fixture, and further improves the stability of workpiece processing.
At the end of the description, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.
In summary, the foregoing description is only of the preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the claims should be construed to fall within the scope of the invention.
Claims (7)
1. The comprehensive working procedure clamp for machining the engine connecting rod comprises a rotary four-shaft (1) and a disc brake tailstock (2) which are matched with the clamp to work, and is characterized by further comprising a bottom plate (100), a four-shaft base plate (200), a tailstock base plate (300), a four-shaft connecting plate (400), a tailstock connecting plate (500), a rotatable bridge plate (600), a small-head positioning device (700), a large-head positioning device (800) and a large-head clamping device (900), wherein the rotary four-shaft (1) is arranged on the bottom plate (100) and is fixed on the four-shaft base plate (200) in parallel with the bottom plate (100), the disc brake tailstock is fixed on the tailstock base plate (300), the four-shaft connecting plate (400) is fixed on the rotary four-shaft (1), the tailstock connecting plate (500) is fixed on the disc brake tailstock (2), the rotatable bridge plate (600) is fixed with the four-shaft connecting plate (400) and the tailstock connecting plate (500), a plurality of large-head positioning devices (800) in rows are fixedly arranged on the rotatable bridge plate (600), and the small-head positioning devices (800) are arranged on the rotatable bridge plate (600) and can be used for clamping workpieces (900) in the rows;
The big head positioning device (800) comprises a big head positioning device base (801) for positioning in the big head appearance section, a big head positioning end face block (802) for pushing and positioning the big head end face and a big head positioning and positioning pressing plate (803) for positioning the end face of the supporting connecting rod, wherein the big head positioning device base (801) supports the big head end face on the connecting rod, the small head positioning device (700) is of an integrated structure, and the small head positioning device (700) comprises a small head positioning and moving upper plate (701), a small head positioning and moving upper plate T-shaped nut (702), a small head positioning V-shaped and end face positioning block (704) for positioning the small head appearance and supporting the small head end face on the connecting rod, a small head positioning base (703) for supporting the small head end face on the connecting rod and a small head clamping device (1000);
The large-head clamping device (900) comprises a bidirectional clamping piece (901) and a unidirectional clamping piece (902), wherein adjacent workpieces are clamped by the bidirectional clamping piece (901), and the outer sides of the workpieces at two ends are clamped by the unidirectional clamping piece (902);
The large head positioning device (800) is used for positioning the shape of a large head blank of a workpiece in a split mode, a large head positioning device base (801) is fixed on a rotatable bridge plate (600), a large head positioning end face block (802) is fixed on the large head positioning device base (801), a large head positioning pressing plate (803) is fixed on a transmission shaft (804) through a hole, the transmission shaft (804) is fixed on the large head positioning device base (801) through a hole, a left split middle pressure plate (805) is fixed on a split middle transmission shaft (806) through a hole, a split middle transmission shaft (806) is fixed on the large head positioning device base (801) through a hole, a right split middle pressure plate (807) is fixed on the split middle transmission shaft (806), the left split middle pressure plate (805) and the right split middle pressure plate (807) are used for automatically clamping the workpiece in a split mode through a self-centering oil cylinder (1200), and the large head positioning pressing plate (803) is used for pushing and clamping the workpiece through the self-centering oil cylinder (1200).
2. The integrated process clamp for machining engine connecting rod, as set forth in claim 1, wherein the two-way clamping piece (901) comprises a clamping block I (903), a supporting column I (904) for supporting the clamping block I (903) and a cylinder I (905) for clamping and adjusting the steering of the clamping block I (903), the clamping block I (903) comprises a clamping part I (9031) and a clamping part II (9032) which are symmetrically arranged, and a connecting part I (9033) connected with the upper end of the supporting column I (904), the clamping part I (9031), the clamping part II (9032) and the connecting part I (9033) are in an integrated structure, a shaft hole I (9034) is arranged at the lower end of the connecting part I (9033), a shaft hole II (9041) matched with the shaft hole I (9034) is arranged at the upper end of the supporting column I (904), a movable pin I (906) for connecting the clamping block I (903) and the supporting column I (904) is arranged on the shaft hole I (9034) and the shaft hole II (9041), and the movable pin (903) is used for realizing the rotation of the clamping block I (904) around the shaft and the workpiece 906.
3. The integrated process clamp for machining the engine connecting rod, as set forth in claim 2, wherein the unidirectional clamping piece (902) comprises a clamping block II (907), a support column II (908) for supporting the clamping block II (907) and a cylinder II (909) for clamping and adjusting the steering of the clamping block II (907), the clamping block II (907) comprises a clamping part III (9071) and a support part (9072) and a connection part II (9073) connected with the upper end of the support column II (908), the clamping part III (9071), the support part (9072) and the connection part II (9073) are of an integrated structure, the lower end of the connection part II (9073) is provided with a shaft hole III (9074), the upper end of the support column II (908) is provided with a shaft hole IV (9081) matched with the shaft hole III (9074), a movable pin II (910) for connecting the clamping block II (907) and the support column II (908) is arranged on the shaft hole III (9074) and the shaft hole IV (9081), and the clamping block II (908) is rotated around the support column II (908) to clamp and release a workpiece.
4. The integrated process clamp for machining an engine connecting rod according to claim 3, wherein the rotatable bridge plate (600) is provided with a first support column (904) for supporting a support portion (9072) of the second clamp block (907).
5. The integrated process clamp for machining the engine connecting rod, as set forth in claim 3, wherein the first clamping part (9031), the second clamping part (9032) and the third clamping part (9071) are respectively provided with a big-end pressing block (912).
6. The integrated process clamp for machining engine connecting rods, as set forth in claim 1, characterized in that the small head positioning device (700), the small head positioning movable upper plate (701) is connected with the rotatable bridge plate (600) through a small head positioning movable upper plate T-shaped nut (702), adjustment of connecting rods with different center distances is achieved, the small head positioning base (703) is fixed on the small head positioning movable upper plate (701) through threads, the small head positioning V-shaped and end face positioning blocks (704) are fixed on the small head positioning base (703) through threads, the small head V-shaped and end face positioning blocks (704) position a small head outline blank of a workpiece, and the small head clamping device (1000) is fixed on the small head positioning movable upper plate (701) through threads.
7. The integrated process clamp for machining engine connecting rods, as set forth in claim 1, characterized in that the four-axis connecting plate (400) and the tailstock connecting plate (500) are used for supporting the rotatable bridge plate (600), one side of the four-axis connecting plate (400) is connected to the rotatable bridge plate (600), the other side is fixed on the rotatable four-axis (1), one side of the tailstock connecting plate (500) is connected to the rotatable bridge plate (600), and the other side is fixed on the disc brake tailstock (2).
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| CN202110715751.1A CN114473565B (en) | 2021-06-24 | 2021-06-24 | A comprehensive process fixture for machining engine connecting rods |
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