CN114918757B - Repairing method for high-precision hole - Google Patents
Repairing method for high-precision hole Download PDFInfo
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- CN114918757B CN114918757B CN202210592450.9A CN202210592450A CN114918757B CN 114918757 B CN114918757 B CN 114918757B CN 202210592450 A CN202210592450 A CN 202210592450A CN 114918757 B CN114918757 B CN 114918757B
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- clamping
- hole
- driving
- cylindrical pin
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Classifications
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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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/48—Single-purpose machines or devices for grinding walls of very fine holes, e.g. in drawing-dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
- B23P9/02—Treating or finishing by applying pressure, e.g. knurling
- B23P9/025—Treating or finishing by applying pressure, e.g. knurling to inner walls of holes by using axially moving tools
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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
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- 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
- B24B41/02—Frames; Beds; Carriages
-
- 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
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
Abstract
The application relates to a method for repairing a high-precision hole, and belongs to the technical field of machining. Which comprises the following steps: 1) And manufacturing a cylindrical pin, wherein one end of the cylindrical pin is conical (the hardness of the cylindrical pin is higher than that of the repaired product, and the diameter of the cylindrical pin is 0.003-0.006 mm larger than the minimum value of the repaired pore diameter). Such as: the diameter of the cylindrical pin is phi 10.003-phi 10.006mm when the aperture is phi 10H 6; 2) Placing the product on a repairing device; 3) Determining the position of a hole on a product; 4) And inserting the tapered end of the cylindrical pin belt into the hole to be repaired by guiding, and applying force to the cylindrical pin to enable the cylindrical pin to pass through the hole so as to repair the diameter of the hole. The application has the effect of better treating the problem of small diameter out-of-tolerance of the hole.
Description
Technical Field
The application relates to the field of machining, in particular to a method for repairing a high-precision hole.
Background
In the machining process, high-precision positioning pin holes, small shaft holes and the like are required to be machined on many products, and the problem of out-of-tolerance small diameter is inevitably caused when the high-precision small-specification holes are machined. When the super-differential amount is less than or equal to 0.02mm, the method is very common because the cutting allowance is too small, and the repairing aperture is not feasible by means of boring, reaming, grinding and the like, and is usually carried out by manually and slowly polishing and repairing by using fine sand paper or other polishing tools, especially on some cast iron products.
The repairing method of sand paper or other polishing tools by manual slow polishing not only has long repairing time, but also is easy to damage the roundness and the surface roughness of the hole, and the effect is not ideal. Therefore, a new treatment mode is needed to better treat the problem of small out-of-tolerance diameter of the holes.
Disclosure of Invention
In order to better solve the problem of small diameter deviation and out of tolerance of the hole, the application provides a method for repairing the hole with high precision.
The repairing method of the high-precision hole provided by the application adopts the following technical scheme:
a repairing method of a high-precision hole comprises the following steps:
1) Manufacturing a cylindrical pin, and making a taper at one end;
2) Placing the product on a repairing device;
3) Determining the position of a hole on a product;
4) And inserting the tapered end of the cylindrical pin belt into the hole to be repaired by guiding, and applying force to the cylindrical pin to enable the cylindrical pin to pass through the hole so as to repair the diameter of the hole.
Through adopting above-mentioned technical scheme, through driving a cylindric lock in corresponding downthehole on the product, through cylindric lock to the extrusion and the friction of pore wall in the in-process through the hole to the hole size is restoreed, makes the hole size reach the requirement of design, and in the restoration process, the pore wall part wearing and tearing, but part is after the extrusion, further improves the hardness in hole, plays the further hardening effect to the hole, and the corresponding more stable in hole on the product is difficult to warp inefficacy.
Optionally, prosthetic devices includes the workstation and is located the subassembly that pushes down of workstation top, the workstation is equipped with the setting position that supplies the product to settle, the naked space in the hole of naked product has been seted up to the setting position, push down the subassembly including the centre gripping the clamp of cylindric lock and drive the clamp moves down the driving piece that moves down.
Through adopting above-mentioned technical scheme, the workstation supplies the product to settle, wherein the naked space in the hole of naked product on the workstation for the cylindric lock can be smooth and easy from the hole on the product pass and can not receive the restriction of workstation, anchor clamps centre gripping cylindric lock, move down driving piece drive anchor clamps and move down, and then drive the cylindric lock and move down, the cylindric lock inserts downthehole on the product, only need at last to extrude the cylindric lock from the downthehole, can accomplish the repair work of hole, adopt the mode of mechanical pushing down, the better maintenance of pushing down is vertical, the manual work has reduced the degree of difficulty to the hole, the cylindric lock also is difficult to cause the skew extrusion to the opening of hole because of the skew of pushing down.
Optionally, a clamping assembly for clamping the product is arranged on the workbench, the clamping assembly comprises clamping blocks, horizontal driving parts for driving the clamping blocks to horizontally move and first flexible fixing parts, four clamping blocks are respectively arranged on four sides of the placement position, and the corresponding horizontal driving parts are also four; the clamping block comprises a stress part and two abutting parts, the stress part is connected with the horizontal driving piece, the two abutting parts are arranged at intervals in the stress part along the horizontal direction, and the end part of the abutting part, which is far away from the stress part, is used for abutting against a product; the first flexible fixing piece covers the end part of the abutting part for abutting and elastic retraction pieces are arranged at two ends of the first flexible fixing piece, so that the first flexible fixing piece is kept in a tight state.
Through adopting above-mentioned technical scheme, the butt piece adopts the mode of two butt portions to carry out the butt to the product, compare in a whole butt piece and carry out the butt to the product, area of contact can keep as far as possible bigger, product butt effect to the appearance irregularity is better, simultaneously through setting up first flexible mounting, on the one hand, the bulge that lies in the product between two butt portions carries out further clamping action, and first flexible mounting can adapt the outer wall of product, the clamping effect is better, simultaneously because first flexible mounting covers the butt portion, thereby can protect the butt portion, make the butt portion be difficult for wearing and tearing each other with the product, above-mentioned clamping assembly all can exert certain clamping action, the suitability is wider to the product of different appearances.
Optionally, a clamping assembly for clamping the product is arranged on the workbench, the clamping assembly comprises clamping blocks, horizontal driving parts for driving the clamping blocks to horizontally move and first flexible fixing parts, four clamping blocks are respectively arranged on four sides of the placement position, and the corresponding horizontal driving parts are also four; and a second flexible fixing piece is arranged between the adjacent clamping blocks, and elastic retraction pieces are arranged at two ends of the second flexible fixing piece, so that the second flexible fixing piece is kept in a tight state.
Through adopting above-mentioned technical scheme, through the second flexible mounting that sets up for also can produce better fixed action to the four corners of product, fixed effect is better, also the appearance of the adaptation product more easily, and cooperation first flexible mounting, thereby carries out the stability of peripheral all position to the product.
Optionally, be provided with locating component on the workstation, locating component includes reference column and the vertical location driving piece that drives the reference column and upwards moves to and the horizontal location driving piece that drives reference column horizontal migration, the reference column tip is equipped with the inflation bulge structure, horizontal migration is followed in reverse movement earlier when the reference column location, resumes the central position and corresponds the subassembly that pushes down at last.
Through adopting above-mentioned technical scheme, can finely tune the product position through locating component, make product position and cylindric lock push down the direction and correspond, thereby prepare for the repair process, improve the repair precision, specifically, firstly, drive the product motion through the reference column to a direction motion, in order to solve the position error when placing the product and place, reverse motion process again, bring the product to the position of needs, the reference column resumes the former position at last, the inflation bulge structure at rethread reference column top, accomplish final fine setting, hole and cylindric lock coaxial on the guarantee product.
Optionally, the positioning assembly further comprises a moving column, the moving column vertically moves along with the positioning column, the top of the moving column is provided with balls in a rolling mode, and the workbench is provided with a moving column hole for the moving column to move upwards to protrude out of the surface.
Through adopting above-mentioned technical scheme, when carrying out the fine setting of product position, through removing the post jack-up product, owing to remove the post top and install the ball for the product can be under the drive of reference column, more smooth and easy removal, thereby be difficult for because the frictional force between product and the workstation, reverse apply too big counter-force to the reference column, lead to the reference column to warp, finally influence the regulation of product position, indirect make the position accuracy after the product adjustment higher.
Optionally, the subassembly that pushes down still includes the confession the seat of pushing down of anchor clamps installation, anchor clamps include the control seat, set up in the centre gripping arm in the control seat outside, drive the centre gripping arm towards the centre gripping driving piece of control seat axis motion, at least two of centre gripping arm, corresponding at least two of centre gripping driving piece, the control seat has seted up the confession the jack of cylindric lock cartridge, the pore wall of jack is equipped with the control the first start button of centre gripping driving piece, just the start control of centre gripping driving piece adopts two switches AND gate control logic and has the second start button.
By adopting the technical scheme, the control seat is used for arranging the cylindrical pins, when the cylindrical pins are inserted into the jacks, the first starting button can be triggered, so that the clamping driving piece is started when the cylindrical pins are inserted into the jacks, the clamping process of the cylindrical pins is completed, simplicity and convenience are realized, meanwhile, the first starting button is arranged on the hole walls of the jacks, and therefore when the cylindrical pins are forced into the holes of products, the first starting button is not easy to damage due to overlarge pressure, and the pressing function is kept not to interfere with each other while the clamping triggering is ensured; the clamping driving piece adopts double-door and door control logic, so that the cylindrical pin can be separated from a clamping state by controlling the second starting button, and the subsequent cylindrical pin can be separated from the jack conveniently.
Optionally, the pressure bar subassembly still includes the depression bar subassembly, the depression bar subassembly includes depression bar, depression bar cylinder and spacing cylinder, depression bar one end slides and runs through the push down the hole bottom of seat and terminal surface as the jack, the depression bar cylinder drive the depression bar axial motion, the gear hole has been seted up to the depression bar, the gear hole has a plurality ofly, spacing cylinder cartridge in the gear hole and restriction the depression bar axial motion.
By adopting the technical scheme, the function of pressing the cylindrical pin into the hole on the product and the function of further pressing the cylindrical pin down are integrated, so that continuous work is facilitated, repeated centering is not needed, and the repair process precision is higher; the cylindrical pin is pressed down for many times through the pressing rod multi-gear downward movement, the whole repairing process is finished, the pressing column is pressed down for many times through the multi-gear downward movement, compared with one-time downward pressing, on one hand, the pressing rod does not need to extend out for a long time, so that the length of the pressing rod between the control seat and a product is not too long when the pressing rod is pressed down, the possibility that the middle part is deformed completely is generated, after the pressing column extends out for each time, the cylindrical pin moves down for a part, when the pressing column is just driven into for the first time, the pressing column is required to be the most stable in the pressing rod, the whole pressing column is in the control seat, and when the cylindrical pin is completely pressed into the hole, the end part of the pressing rod can be in the hole, so that the pressing rod is stabilized through the hole wall, the stable non-translocation deformation of the pressing rod is guaranteed, the whole pressing process is continuous and reasonable, and the good stability is kept on the basis of locking the pressing time as much as possible.
Optionally, in step 3), the position of the hole is determined first, then the product position is adjusted, and then the product position is fixed.
Through adopting above-mentioned technical scheme, adjust the product position earlier, in carrying out subsequent repair process for the structure of whole equipment is simpler, does not need the cylindric lock to have horizontal translation ability, only need have push down stability can, the function is fewer, also more stable, guarantee repair process's stability, does not need to rely on the manual work to carry out the selection of hole position completely again simultaneously, and the adjustment is more convenient.
In summary, a cylindrical pin is driven into a corresponding hole in a product, and the hole is extruded and rubbed through the cylindrical pin in the process of passing through the hole, so that the size of the hole is repaired, the size of the hole meets the design requirement, the hole wall is partially worn in the repairing process, but the hardness of the hole is further improved after the hole is extruded, the hardening effect on the hole is further achieved, the corresponding hole on the product is more stable, and the hole is not easy to deform and lose efficacy.
Drawings
FIG. 1 is a schematic view of a cylindrical pin according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a repairing apparatus according to an embodiment of the present application;
FIG. 3 is a schematic view of a structure of a workbench according to an embodiment of the application;
FIG. 4 is a cross-sectional view of the structure of the clamping assembly in an embodiment of the application;
FIG. 5 is a schematic view of a positioning assembly according to an embodiment of the present application;
FIG. 6 is a schematic view of a structure of a pressing seat according to an embodiment of the present application 1;
fig. 7 is a schematic structural view of a pressing seat according to an embodiment of the present application.
Reference numerals illustrate: 1. a cylindrical pin; 2. a work table; 21. a setting bit; 22. bare space; 23. a placement groove; 3. pressing down the assembly; 31. a clamp; 311. a control base; 3111. a jack; 312. a clamping arm; 313. clamping the driving member; 32. pressing down a seat; 33. a downward movement driving member; 331. a hydraulic cylinder; 332. a movable beam; 34. a guide post; 4. a clamping assembly; 41. a clamping block; 411. a force receiving part; 412. an abutting portion; 42. a horizontal driving member; 43. a first flexible fixing member; 44. a second flexible fixing member; 45. a first flexible abutment space; 46. a second flexible abutment space; 47. an elastic retraction member; 48. an elastic wall; 49. an elastic hole; 5. a positioning assembly; 51. a positioning plate; 52. positioning columns; 53. a vertical positioning drive; 54. a horizontal positioning driving member; 55. a moving column; 56. a ball; 6. a compression bar assembly; 61. a compression bar; 611. a driving block; 612. a first gear hole; 613. a second gear hole; 614. a third gear hole; 62. a compression bar cylinder; 63. a limiting piece; 631. a vertical bar; 6321. a first limit bar; 6322. the second limit bar; 6323. a third limit bar; 641. a first limit cylinder; 642. the second limiting cylinder; 643. and a third limiting cylinder.
Detailed Description
The application is described in further detail below with reference to fig. 1-7.
The embodiment of the application discloses a method for repairing a high-precision hole.
Referring to fig. 1, a method for repairing a high-precision hole includes the steps of:
1) Manufacturing a cylindrical pin 1, wherein one end of the cylindrical pin 1 is conical (refer to figure 1), the hardness of the material of the cylindrical pin 1 is higher than that of a repaired product, and the diameter of the cylindrical pin 1 is 0.003-0.006 mm larger than the minimum value of the repaired pore diameter; such as: the diameter of the cylindrical pin 1 is phi 10.003-phi 10.006mm when the aperture is phi 10H 6;
2) Placing the product on a repairing device;
3) Determining the position of a hole on a product, firstly determining the position of the hole, then adjusting the position of the product to ensure that the position of the hole and the cylindrical pin 1 is opposite to each other without adopting the form of the cylindrical pin 1 to the hole, and then fixing the position of the product: specifically, the product is placed in the placement position 21, the positioning column 52 is inserted into the hole, when the positioning column 52 is positioned, the vertical positioning driving assembly is started, the moving column 55 is lifted to drive the product to be lifted, then the product is driven to move together by horizontal movement, then the product is driven to move together by reverse movement, finally the center position is recovered, the inflation expansion function is started, and the final fine adjustment of the position of the product is completed;
wherein the inflation and displacement step sequence of the positioning column 52 is interchangeable;
starting the clamping assembly 4 to clamp and fix the product, and then moving the positioning plate 51 downwards to drive the positioning column 52 to move downwards away from the product;
4) The cylindrical pin 1 is inserted into a hole to be repaired by guiding one tapered end of the cylindrical pin 1, the step is firstly completed, partial insertion of the cylindrical pin 1 is completed, final adjustment of the product position is completed, in the process, the product is lifted up by the lifting of the moving column 55 so as to be convenient for final adjustment of the product position, then the moving column 55 moves down and breaks away, the pressing seat 32 drives the cylindrical pin 1 to be partially inserted, then the clamping of the cylindrical pin 1 is released by the second starting button, the pressing seat 32 moves up again, the pressure rod 61 is adjusted to enter the second gear from the first gear, the pressure rod 61 stretches out to trigger the first starting button, the pressure rod 61 is clamped again by the clamping arm 312, then the pressing seat 32 moves down, the cylindrical pin 1 is completely pressed down, then the pressing seat 32 moves up again, in the upward process, the control arm is controlled to release the pressure rod 61 by the second starting button, and the limiting bar is completely moved out, and the air cylinder 62 simultaneously drives the pressure rod 61 to move down, so that when the pressing seat 32 moves up, the pressure rod 61 keeps the position, then the pressing rod 61 is fixed again, the hole is completed again, the pressing rod 61 is pressed down, the diameter of the cylindrical pin 1 is pressed down, and the cylindrical pin 1 is pressed out, and the hole is repaired.
Referring to fig. 2, the repairing apparatus includes a table 2 and a pressing assembly 3 above the table 2, the table 2 is placed with a product, the pressing assembly 3 is used for driving the cylindrical pin 1 into a hole on the product, and finally the cylindrical pin 1 passes through the hole to complete the repairing of the diameter of the hole.
Referring to fig. 3, the workbench 2 is in a cuboid shape standing up in the height direction, the middle part of the upper side wall of the workbench 2 is provided with a placement position 21 for placing products, the middle part of the placement position 21 is provided with a bare space 22 for exposing holes of the products, the bare space 22 is provided with a cylindrical pin 1 which can smoothly pass through the holes and fall into the bare space 22, the lower side wall of the workbench 2 is provided with a placement groove 23, and the bare space 22 is mutually communicated with the placement groove 23.
Referring to fig. 3 and 4, a clamping assembly 4 for clamping a product and a positioning assembly 5 for determining a product placement position and moving the product to a corresponding position are arranged on the workbench 2, the clamping assembly 4 comprises clamping blocks 41, horizontal driving members 42 for driving the clamping blocks 41 to horizontally move, a first flexible fixing member 43 and a second flexible fixing member 44, four clamping blocks 41 are arranged on four sides of the positioning seat 21, four corresponding horizontal driving members 42 are arranged on four sides of the positioning seat, four horizontal driving members 42 correspond to the four clamping blocks 41, and an air cylinder can be adopted for the horizontal driving members 42; the clamping block 41 comprises a stress portion 411 and an abutting portion 412, wherein the stress portion 411 is flat, one plate surface is fixed with a piston rod of the horizontal driving member 42, the other plate surface is provided with the abutting portion 412, two abutting portions 412 are integrally fixed with the stress portion 411 and are arranged at intervals along the length direction of the stress portion 411, the two abutting portions 412 are used for abutting against a product, and the end portion, away from the stress portion 411, of the abutting portion 412 is used for abutting against the product.
The space between two abutting portions 412 of the same abutting block is set to be a first flexible abutting space 45, a second flexible abutting space 46 is set between adjacent abutting portions 412 of adjacent abutting blocks, a first flexible fixing piece 43 is located between the two abutting portions 412 of the same abutting block and covers the end portions of the abutting portions 412 for abutting and the first flexible abutting space 45, elastic retracting pieces 47 are arranged at two ends of the first flexible fixing piece 43, the elastic retracting pieces 47 can be clamp springs or elastic ropes, one ends of the elastic retracting pieces 47 are connected with the end portions of the first flexible fixing piece 43, the other ends of the elastic retracting pieces are connected with the stress portions 411, the first flexible fixing piece 43 is kept in a tight state, the first flexible fixing piece 43 protects abutting surfaces between the abutting portions 412 and products, and the elastic retracting pieces 47 at each end of the first flexible fixing piece are two and are arranged at intervals in the vertical direction.
An elastic wall 48 is vertically arranged on the workbench 2 at the position, far from the positioning position 21, of each second flexible abutting space 46, the second flexible fixing piece 44 is positioned between two adjacent abutting parts 412 of the adjacent abutting blocks, the second flexible fixing piece 44 covers the second flexible abutting space 46, elastic retracting pieces 47 are arranged at two ends of the second flexible fixing piece 44, elastic ropes are adopted by the elastic retracting pieces 47 at two ends of the second flexible fixing piece 44, elastic holes 49 are formed in side walls, opposite to each other, of the two abutting parts 412 of the same abutting block, inlets and outlets of the elastic holes 49 are positioned on the same side wall, one end of the elastic retracting pieces 47 is connected with the end part of the first flexible fixing piece 43, and the other end of the elastic retracting pieces penetrate through the elastic holes 49 and are connected with the elastic wall 48, so that the second flexible fixing piece 44 keeps a tight state, and the elastic retracting pieces 47 at each end of the second flexible fixing piece are also two and are arranged at intervals in the vertical direction; the elastic retraction members 47 at the end of the first flexible fixing member 43 and the elastic retraction members 47 at the end of the second flexible fixing member 44 may be alternately arranged or may be arranged inside and outside.
Referring to fig. 3 and 5, the positioning assembly 5 includes a positioning plate 51, a positioning column 52, a moving column 55, a vertical positioning driving member 53 and a horizontal positioning driving member 54, the vertical positioning driving member 53 may be an oil cylinder and is installed in the installation groove 23 of the workbench 2, a piston rod of the vertical positioning driving member 53 is vertically disposed upwards, a plate surface of the positioning plate 51 is fixed on the piston rod of the vertical positioning driving member 53, a plurality of moving columns 55 are vertically fixed on the plate surface of the positioning plate 51 deviating from the vertical positioning driving member 53, in this embodiment, the moving columns 55 are eight, four moving columns 55 are located at four corners of the exposed space 22, four moving columns 55 are located at four sides of the installation position 21, moving column 55 holes for the moving columns 55 to pass through are vertically provided on the workbench 2, moving columns 55 located at four sides of the installation position 21 are slidingly disposed in the moving column 55 holes, and meanwhile, a ball 56 is rollingly installed at the top end of each moving column 55.
The positioning column 52 is arranged in the middle of the positioning plate 51, the positioning column 52 corresponds to the middle of the exposed space 22, and an inflatable bulge structure is arranged at the end part of the positioning column 52, so that the top of the positioning column 52 has an inflatable expansion function; the positioning column 52 is slidably mounted on the positioning plate 51 along the length direction of the positioning plate 51, a concrete positioning plate 51 is provided with a sliding groove, the bottom of the positioning column 52 is provided with a sliding block matched with the sliding groove, the horizontal positioning driving piece 54 can also adopt an oil cylinder, a piston rod of the horizontal positioning driving piece 54 is fixed with the top of the positioning column 52, the horizontal positioning driving piece 54 can also be mounted on the positioning plate 51 through a frame for stabilizing the positioning column 52, and then the piston rod of the horizontal positioning driving piece 54 is fixed with the middle part of the positioning column 52; meanwhile, the horizontal positioning driving piece 54 is positioned between the moving column 55 of the outer ring and the moving column 55 of the inner ring, so that the arrangement of the moving column 55 can not influence the sliding driving of the positioning column 52, and the jacking operation of different product shapes can be adapted.
Referring to fig. 2, 6 and 7, the pressing assembly 3 includes a clamp 31, a pressing seat 32, a downward driving member 33 and a pressing rod assembly 6, the downward driving member 33 is used for driving the pressing seat 32 to move vertically, four corners of the workbench 2 are provided with guide posts 34 for sliding installation of the pressing seat 32, the direction of sliding of the pressing seat 32 is limited by the guide posts 34, the downward driving member 33 is fixed at the top ends of the four guide posts 34, the downward driving member 33 and a pressure driving part of the hydraulic machine are similar to each other and include a hydraulic cylinder 331 and a movable beam 332, the movable beam 332 is slidably installed on the four guide posts 34 and is located above the pressing seat 32, and four sides of the movable beam 332 are associated with the pressing seat 32 through four pushing posts, so that the movable beam 332 can drive the pressing seat 32 to slide up and down together.
The fixture 31 is used for clamping the cylindrical pin 1 and is arranged on the side wall of the pressing seat 32 facing the workbench 2, the fixture 31 comprises a control seat 311, clamping arms 312 arranged on the outer side of the control seat 311 and clamping driving pieces 313 for driving the clamping arms 312 to move towards the axis of the control seat 311, at least two clamping arms 312 are arranged at equal angular intervals around the circumference of the control seat 311, three clamping arms 312 are arranged in the embodiment, and accordingly the cylindrical pin 1 is fixed by three claws and is more stable, three corresponding clamping driving pieces 313 are arranged corresponding to the clamping arms 312, the clamping driving pieces 313 can adopt oil cylinders, the three clamping driving pieces 313 are located outside the three clamping arms 312, and the three clamping driving pieces 313 drive the three clamping arms 312 to move close to and away from the control seat 311 in a one-to-one correspondence manner.
The control seat 311 is cylindrical and is coaxially provided with a jack 3111 for inserting the cylindrical pin 1, the hole wall of the jack 3111 is provided with a first start button for controlling the clamping driving member 313, and is additionally provided with a second start button for controlling the electric control and the manual control, the starting control of the clamping driving member 313 adopts double-switch and door control logic, namely the first start button and the second start button are required to trigger, the clamping arm 312 is kept in a clamping state for the cylindrical pin 1, and any start button can trigger the retracting movement of the clamping arm 312 to finish the loosening of the cylindrical pin 1.
The compression bar assembly 6 comprises a compression bar 61, a compression bar cylinder 62, a limiting cylinder and a limiting piece 63, wherein one end of the compression bar 61 slides to penetrate through the compression bar 32 and the end face of the compression bar 61 is used as the bottom of a hole of a jack 3111, the other end of the compression bar 61 protrudes out of the compression bar 32 and is positioned between the compression bar 32 and the movable beam 332, three limiting cylinders and the compression bar cylinder 62 are respectively arranged on four sides of the compression bar 61, the compression bar cylinder 62 is arranged on the compression bar 32 through a bracket, a driving block 611 positioned below a piston rod of the compression bar cylinder 62 is hung on the side wall of the compression bar 61, and the compression bar 61 is driven to axially move through the compression bar cylinder 62.
Wherein the diameter of the compression bar 61 is smaller than the diameter of the cylindrical pin 1, so that the compression bar 61 can smoothly press the cylindrical pin 1 to pass through the hole.
The pressure lever 61 is provided with three gear holes, the three gear holes are axially arranged at intervals along the pressure lever 61, the three gear holes are sequentially arranged as a first gear hole 612, a second gear hole 613 and a third gear hole 614 from bottom to top, and the three limiting cylinders are respectively arranged as a first limiting cylinder 641, a second limiting cylinder 642 and a third limiting cylinder 643, wherein the second limiting cylinder 642 is arranged opposite to the pressure lever cylinder 62.
The limiting part 63 comprises a vertical bar 631 and limiting bars, the limiting bars on the three limiting parts 63 are respectively arranged to be a first limiting bar 6321, a second limiting bar 6322 and a third limiting bar 6323 and located at different heights, the first limiting bar 6321 and the third limiting bar 6323 are respectively located at the highest position and the lowest position, the vertical bar 631 is fixed with a piston rod of a limiting cylinder, one end of the limiting bar is fixed to the other end of the vertical bar 631 towards the compression bar 61, the first limiting bar 6321 corresponds to the first limiting cylinder 641, the second limiting bar 6322 corresponds to the second limiting cylinder 642, and the third limiting bar 6323 corresponds to the third limiting cylinder 643.
Wherein the first gear hole 612 and the second gear hole 613 are cross holes and the third gear hole 614 is a single hole; when the pressure lever 61 is in the first gear, the first limiting bar 6321 is arranged in the first gear hole 612 in a penetrating manner, when the pressure lever 61 is in the second gear, the first limiting bar 6321 is arranged in the second gear hole 613 in a penetrating manner, the second limiting bar 6322 is arranged in the first gear hole 612 in a penetrating manner, when the pressure lever 61 is in the third gear, the first limiting bar 6321 is arranged in the third gear hole 614 in a penetrating manner, the second limiting bar 6322 is arranged in the second gear hole 613 in a penetrating manner, and the third limiting bar 6323 is arranged in the first gear hole 612 in a penetrating manner.
When needing to be noted, the piston rod of the limiting cylinder is coaxial with the second limiting bar 6322, two opposite vertical bars 631 are provided with stabilizing holes, and the third limiting bar 6323 and the first limiting hole pass through the compression bar 61 and then are respectively inserted into the corresponding stabilizing holes, so that the third gear is more stable; the staggered structure and the mutually buckled structure are arranged, so that the limit strength requirements of different gears are met, and the cylindrical pin 1 is pressed down better.
Meanwhile, the three limit air bars can be positioned on the same side, the opening orientations of the corresponding three gear holes are consistent, and when in different gears, all the gear holes which can be inserted are fully inserted into the limit bars, so that the stability and the strength of the compression bar 61 can be ensured when in different gears, and the limit bars are inserted into the gear holes to compensate the corresponding strength damage of the compression bar 61. Similarly, the arrangement of a plurality of limit gas rods can be correspondingly pushed out.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (4)
1. The repairing method of the high-precision hole is characterized by comprising the following steps of:
1) Manufacturing a cylindrical pin (1), wherein one end of the cylindrical pin is conical;
2) Placing the product on a repairing device;
3) Determining the position of a hole on a product;
4) The tapered end of the cylindrical pin (1) is used as a guide to be inserted into a hole to be repaired, and a force is applied to the cylindrical pin (1) to enable the cylindrical pin (1) to penetrate through the hole, so that the diameter of the hole is repaired;
the repairing device comprises a workbench (2) and a pressing component (3) positioned above the workbench (2), wherein the workbench (2) is provided with a placement position (21) for placing products, the placement position (21) is provided with a bare space (22) for exposing holes of the products, and the pressing component (3) comprises a clamp (31) for clamping the cylindrical pin (1) and a downward-moving driving piece (33) for driving the clamp (31) to move downward;
the workbench (2) is provided with a clamping assembly (4) for clamping products, the clamping assembly (4) comprises clamping blocks (41), horizontal driving parts (42) for driving the clamping blocks (41) to horizontally move and first flexible fixing parts (43), the clamping blocks (41) are four, the four clamping blocks (41) are respectively arranged on four sides of the placement position (21), and the corresponding horizontal driving parts (42) are also four; the clamping block (41) comprises a stress part (411) and abutting parts (412), wherein the stress part (411) is connected with the horizontal driving piece (42), two abutting parts (412) are arranged at intervals in the stress part (411) along the horizontal direction, and the end part, away from the stress part (411), of each abutting part (412) is used for abutting against a product; the first flexible fixing piece (43) covers the abutting part (412) and is used for abutting the end part, and elastic retraction pieces (47) are arranged at the two ends of the first flexible fixing piece (43), so that the first flexible fixing piece (43) is kept in a tight state;
the workbench (2) is provided with a clamping assembly (4) for clamping products, the clamping assembly (4) comprises clamping blocks (41), horizontal driving parts (42) for driving the clamping blocks (41) to horizontally move and first flexible fixing parts (43), the clamping blocks (41) are four, the four clamping blocks (41) are respectively arranged on four sides of the placement position (21), and the corresponding horizontal driving parts (42) are also four; a second flexible fixing piece (44) is arranged between the adjacent clamping blocks (41), and elastic retraction pieces (47) are arranged at two ends of the second flexible fixing piece (44) so that the second flexible fixing piece (44) is kept in a tight state;
the pressing assembly (3) further comprises a pressing seat (32) for mounting the clamp (31), the clamp (31) comprises a control seat (311), clamping arms (312) arranged on the outer side of the control seat (311) and clamping driving pieces (313) for driving the clamping arms (312) to move towards the axis of the control seat (311), at least two clamping arms (312) and at least two corresponding clamping driving pieces (313), the control seat (311) is provided with an inserting hole (3111) for inserting the cylindrical pin (1), the hole wall of the inserting hole (3111) is provided with a first starting button for controlling the clamping driving pieces (313), and the starting control of the clamping driving pieces (313) adopts double-switch and door control logic and is provided with a second starting button;
the pressing assembly (3) further comprises a pressing rod assembly (6), the pressing rod assembly (6) comprises a pressing rod (61), a pressing rod cylinder (62) and a limiting cylinder, one end of the pressing rod (61) slides to penetrate through the pressing seat (32) and the end face of the pressing rod as the bottom of the jack (3111), the pressing rod cylinder (62) drives the pressing rod (61) to axially move, the pressing rod (61) is provided with a plurality of gear holes, and the limiting cylinder is inserted into the gear holes to limit the axial movement of the pressing rod (61).
2. A method of repairing a high precision hole according to claim 1, wherein: the workbench (2) is provided with a positioning assembly (5), the positioning assembly (5) comprises a positioning column (52), a vertical positioning driving piece (53) for driving the positioning column (52) to move upwards and a horizontal positioning driving piece (54) for driving the positioning column (52) to move horizontally, the end part of the positioning column (52) is provided with an inflatable bulge structure, the positioning column (52) moves horizontally and then moves reversely when positioned, and finally the center position is restored to correspond to the pressing assembly (3).
3. A method of repairing a high precision hole according to claim 2, wherein: the positioning assembly (5) further comprises a moving column (55), the moving column (55) moves vertically along with the positioning column (52), balls (56) are mounted on the top of the moving column (55) in a rolling mode, and a moving column (55) hole for the moving column (55) to move upwards to protrude out of the surface is formed in the workbench (2).
4. A method of repairing a high precision hole according to claim 1, wherein: and 3) determining the position of the hole, adjusting the position of the product, and fixing the position of the product.
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| CN202210592450.9A CN114918757B (en) | 2022-05-28 | 2022-05-28 | Repairing method for high-precision hole |
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| CN202210592450.9A CN114918757B (en) | 2022-05-28 | 2022-05-28 | Repairing method for high-precision hole |
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|---|---|
| CN114918757A (en) | 2022-08-19 |
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