CN112247682B - Matching method of coupling fittings of hydraulic machine - Google Patents

Matching method of coupling fittings of hydraulic machine Download PDF

Info

Publication number
CN112247682B
CN112247682B CN202011148602.3A CN202011148602A CN112247682B CN 112247682 B CN112247682 B CN 112247682B CN 202011148602 A CN202011148602 A CN 202011148602A CN 112247682 B CN112247682 B CN 112247682B
Authority
CN
China
Prior art keywords
product
grinding tool
grinding
block
forming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202011148602.3A
Other languages
Chinese (zh)
Other versions
CN112247682A (en
Inventor
马建明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Yuanye Hydraulic Machinery Co ltd
Original Assignee
Jiangsu Yuanye Hydraulic Machinery Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Yuanye Hydraulic Machinery Co ltd filed Critical Jiangsu Yuanye Hydraulic Machinery Co ltd
Priority to CN202011148602.3A priority Critical patent/CN112247682B/en
Publication of CN112247682A publication Critical patent/CN112247682A/en
Application granted granted Critical
Publication of CN112247682B publication Critical patent/CN112247682B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/11—Lapping tools
    • 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
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/34—Accessories
    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0072—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using adhesives for bonding abrasive particles or grinding elements to a support, e.g. by gluing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention discloses a method for researching coupling accessories of a hydraulic machine, which relates to the technical field of manufacturing of accessories of hydraulic machines and comprises the following steps: forming and manufacturing accessories, lapping and finishing: manufacturing a first molding grinding tool and a second molding grinding tool corresponding to the first product and the second product according to the shapes and the sizes of the first product and the second product; electroplating the first molding grinding tool and the second molding grinding tool through an electroplating process to adsorb a previous layer of carborundum with corresponding specification; and respectively installing the first forming grinding tool and the second forming grinding tool on a grinding device, and respectively lapping the surfaces to be ground of the first product and the second product. The invention has the advantages that: the diamond dust with the corresponding specification is plated on the forming grinding tool to realize one-time lapping forming, so that manual lapping is replaced, the coupling part is prevented from being ground, the grinding surface is uniformly and smoothly ground, the quality of a product is improved, and the working efficiency is also improved.

Description

Matching method of coupling fittings of hydraulic machine
Technical Field
The invention relates to the technical field of hydraulic press accessory manufacturing, in particular to a method for researching coupling accessories of a hydraulic press.
Background
A hydraulic machine is a machine that uses liquid as a working medium to transfer energy to implement various processes. The hydraulic press can be used for forging and forming, straightening, press fitting, packing, pressing blocks, pressing plates and the like. The hydraulic machine comprises a hydraulic press and an oil press. The hydraulic press using water-based liquid as working medium and the hydraulic press using oil as working medium. In the hydraulic press accessory, there are a lot of coupling parts, realize the finish machining through the mutual grinding between the coupling part during the lapping, and the mutual grinding in-process, coupling part itself can be ground away, and the size can change, does not accord with original dimensional requirement, influences product quality.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a matching method of coupling parts of a hydraulic machine, which can solve the problems that the coupling parts are ground off, the size is changed and does not accord with the original size requirement when the coupling parts are ground mutually and the product quality is influenced during fine processing.
In order to solve the technical problems, the technical scheme of the invention is as follows: the method comprises the following steps:
s1, forming and manufacturing accessories: manufacturing corresponding part forming dies according to the sizes and the shapes of the first product and the second product of the coupling part, placing the raw material in the corresponding part forming dies, and performing compression forming under the pressure of 500-700MPa to obtain blanks of the first product and the second product, wherein the density of the blanks is controlled to be 6.4-6.8g/cm3；
S2, pre-burning: heating the first product and the second product blank which are manufactured and formed to 1100-plus 1150 ℃ in a protective atmosphere environment, preserving heat for 1-1.5 hours, cooling along with the furnace to obtain two pre-sintered blanks, respectively putting the two blanks into an ion nitriding furnace for gas nitriding, controlling the nitriding temperature to be 500 +/-10 ℃, keeping the nitriding temperature for 20-30 hours, and keeping the hardness after nitriding to be more than 700 HV;
s3, lapping and finishing:
s3.1, manufacturing a first forming grinding tool and a second forming grinding tool which correspond to each other according to the shapes and the sizes of the first product and the second product, wherein the grinding surfaces of the first forming grinding tool and the second forming grinding tool are reserved with electroplated layer sizes of 2-3 mm;
s3.2, electroplating the first molding grinding tool and the second molding grinding tool through an electroplating process, electroplating and adsorbing a layer of diamond dust with corresponding specifications on the surfaces of the grinding surfaces of the first molding grinding tool and the second molding grinding tool, wherein the sizes of the electroplated first molding grinding tool and the electroplated second molding grinding tool correspond to the sizes of the first product and the second product;
s3.3, mounting the first forming grinding tool on a grinding device, and lapping the surface to be ground of the first product by using carborundum on the grinding surface of the first forming grinding tool, wherein the surface roughness value of the first product after lapping is not more than 0.3 um; mounting a second forming grinding tool on a grinding device, and lapping the surface to be ground of a second product by using carborundum on the grinding surface of the second forming grinding tool, wherein the surface roughness value of the second product after lapping is not more than 0.3 um;
and S3.4, respectively lapping the surfaces to be ground of the first product and the second product to obtain a coupled first product and a coupled second product.
Further, in the step S3.2, when electroplating is carried out through an electroplating process, the first product and the second product are subjected to pre-plating treatment, including oil removal and activation, the diamond is subjected to wetting treatment, the diamond is boiled for 30 minutes by using nitric acid and is thoroughly washed by water, the components of the electroplating solution are 270g/L of nickel sulfate, 40g/L to 50g/L of nickel chloride, 40g/L to 50g/L of boric acid, 0.01g/L to 0.03g/L of sodium dodecyl sulfate, 0.2g/L to 0.5g/L of saccharin, and 0.1g/L to 0.3g/L of 1, 4-butynediol, the temperature of the electroplating solution is 50 ℃ to 55 ℃, and the pH value is 4 to 5.
Further, the first product and the second product of the coupling fitting are respectively a rear cover and an oil distribution disc of a double-arc channel of the hydraulic machine.
Further, the first product and the second product of the coupling fitting are respectively a pump liner and an oil distribution disc of a hydraulic plunger pump of a hydraulic machine.
Further, the grinding device comprises a driving mechanism and a swinging mechanism; the driving mechanism comprises a linear motor, a moving rod, a moving block and a driving block, and the swinging mechanism comprises a swinging block, an inserting rod and a grinding tool;
the linear motor is arranged on the workbench, the output end of the linear motor is connected with the movable rod, the linear motor drives the movable rod to move in the horizontal direction, the workbench is provided with a guide block, a guide hole is formed in the guide block, the movable rod penetrates through the guide hole in the guide block and is arranged horizontally, and one end, far away from the linear motor, of the movable rod is connected with a movable block;
two symmetrical fixing plates are fixedly arranged on the side face, far away from the moving rod, of the moving block, the fixing plates are connected with one end of the I-shaped driving block through bolts, and the other end of the I-shaped driving block is hinged to the top end of the swinging block;
the grinding tool is characterized in that an empty groove is formed in the workbench, the swinging block is longitudinally arranged in the empty groove, the bottom of the workbench is connected with a mounting plate, the mounting plate is L-shaped, a transverse plate of the mounting plate is fixed with the workbench through a bolt, a longitudinal plate of the mounting plate is arranged below the empty groove of the workbench, the center of the swinging block is rotatably connected with the longitudinal plate of the mounting plate, a threaded hole is formed in the bottom of the swinging block, external threads are formed in the top of the inserting rod, the inserting rod is fixedly screwed with the threads at the bottom of the swinging block, a spherical head is connected to the bottom of the inserting rod, a spherical hole corresponding to the spherical head is formed in the center of the top of the grinding tool, and the spherical head of the inserting rod penetrates into the spherical hole of the grinding tool;
the grinding tool is arranged on the grinding surface of the rear cover of the hydraulic machine, and the rear cover of the hydraulic machine is fixed on a platform below the workbench through a bench vice.
Further, the guide block is fixed on the workbench through a bolt.
Furthermore, one end, far away from linear electric motor, of the moving rod is connected with a screw rod, the diameter of the screw rod is smaller than that of the moving rod, and the screw rod penetrates through the center of the moving block and is locked and fixed through a nut.
The invention has the advantages that: the diamond dust plated with the corresponding specification on the forming grinding tool realizes one-time lapping forming, so that manual lapping is replaced, the coupling piece is prevented from being ground when finish machining is realized through a mutual grinding mode between the coupling pieces, the grinding surface is uniformly and smoothly ground, the quality of a product is improved, the working efficiency is also improved, the method is suitable for lapping the coupling piece of a hydraulic machine product, and the cost can be effectively reduced.
Drawings
FIG. 1 is a top view of the polishing apparatus of the present invention;
fig. 2 is a side view of the swing mechanism of the polishing apparatus of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and the detailed description. The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.
The specific implementation mode adopts the following technical scheme: the method comprises the following steps:
s1, forming and manufacturing accessories: according to coupling fittingsMaking corresponding accessory forming dies according to the sizes and shapes of the first product and the second product, placing the raw materials in the corresponding accessory forming dies, performing compression forming under the pressure of 500MPa to obtain blanks of the first product and the second product, and controlling the density of the blanks to be 6.4g/cm3；
S2, pre-burning: heating the first product and the second product blank which are manufactured and formed to 1100 ℃ in a protective atmosphere environment, preserving heat for 1 hour, cooling along with a furnace to obtain two pre-sintered blanks, respectively putting the two blanks into an ion nitriding furnace for gas nitriding, controlling the nitriding temperature at 500 ℃ for 20 hours, and keeping the hardness after nitriding to be more than 700 HV;
s3, lapping and finishing:
s3.1, manufacturing a first forming grinding tool and a second forming grinding tool which correspond to each other according to the shapes and the sizes of the first product and the second product, wherein the grinding surfaces of the first forming grinding tool and the second forming grinding tool are reserved with electroplated layer sizes of 2-3 mm;
s3.2, electroplating the first molding grinding tool and the second molding grinding tool through an electroplating process, electroplating and adsorbing a layer of diamond dust with corresponding specifications on the surfaces of the grinding surfaces of the first molding grinding tool and the second molding grinding tool, wherein the sizes of the electroplated first molding grinding tool and the electroplated second molding grinding tool correspond to the sizes of the first product and the second product;
during electroplating, the first product and the second product are subjected to pre-plating treatment, including oil removal and activation, the diamond is subjected to wetting treatment, the diamond is boiled for 30 minutes by nitric acid and is thoroughly washed by water, the components of the electroplating solution are 250g/L of nickel sulfate, 40g/L of nickel chloride, 40g/L of boric acid, 0.01g/L of sodium dodecyl sulfate, 0.2g/L of saccharin and 0.1g/L of 1, 4-butynediol, the temperature of the electroplating solution is 50 ℃, and the pH value is 4.
S3.3, mounting the first forming grinding tool on a grinding device, and lapping the surface to be ground of the first product by using carborundum on the grinding surface of the first forming grinding tool, wherein the surface roughness value of the first product after lapping is not more than 0.3 um; mounting a second forming grinding tool on a grinding device, and lapping the surface to be ground of a second product by using carborundum on the grinding surface of the second forming grinding tool, wherein the surface roughness value of the second product after lapping is not more than 0.3 um;
and S3.4, respectively lapping the surfaces to be ground of the first product and the second product to obtain a coupled first product and a coupled second product.
As shown in fig. 1 and 2, the grinding apparatus includes a driving mechanism and a swinging mechanism; the driving mechanism comprises a linear motor 2, a moving rod 3, a moving block 4 and a driving block 5, the driving of the swing mechanism is achieved, the swing mechanism comprises a swing block 6, an inserting rod 7 and a grinding tool 8, and swing grinding is achieved under the driving of the driving mechanism.
Linear motor 2 installs on the workstation, carriage release lever 3 is connected to linear motor 1's output, control on the 3 horizontal direction of linear motor 2 drive carriage release lever, install guide block 9 on the workstation 1, guide block 9 passes through the bolt fastening on the workstation 1, be equipped with the guiding hole in the guide block 9, carriage release lever 3 passes the guiding hole level setting in guide block 9, guide block 9 demountable installation is on workstation 1, can play the guide effect to the translation of carriage release lever 3, the one end that linear motor 2 was kept away from to carriage release lever 3 is connected with movable block 4, the one end that linear motor 2 was kept away from to carriage release lever 3 is connected with the screw rod, the diameter of screw rod is less than the diameter of carriage release lever 3, the screw rod passes the center of movable block 4 and is fixed through nut locking, carriage release lever 3 passes through the screw rod, the nut can be dismantled with movable block 4 and be connected, the installation is convenient with the dismantlement.
The side of the movable block 4, which is far away from the movable rod 3, is fixedly provided with two symmetrical fixing plates 10, the two fixing plates 10 are respectively connected with an I-shaped driving block 5, one ends of the fixing plates 10 and the driving block 5 are fixedly connected through bolts, the fixing plates can be detachably connected, the installation and the disassembly are convenient, the other end of the I-shaped driving block 5 is hinged to the top end of the swinging block 6, the linear motor 1 of the driving mechanism drives the movable rod 3, the movable block 4 and the driving block 5 to move horizontally, and the driving block 5 drives the top end of the swinging block 6 to rotate.
The workbench 1 is provided with an empty groove 11, the swing block 6 is longitudinally arranged in the empty groove 11, the bottom of the workbench 1 is connected with a mounting plate 12, the mounting plate 12 is L-shaped, a transverse plate of the mounting plate 12 is fixed with the workbench 1 through a bolt, a longitudinal plate of the mounting plate 12 is arranged below the empty groove 11 of the workbench 1, a rotating shaft penetrates through the center of the swing block 6 and the longitudinal plate of the mounting plate 12 to enable the two to be rotatably connected, the top end of the swing block 6 rotates to drive the swing block 6 to swing, the bottom of the swing block 6 swings, the bottom of the swing block 6 is provided with a threaded hole, the top of the inserting rod 7 is provided with an external thread, the inserting rod 7 is rotatably connected and fixed with the bottom thread of the swing block 6, the swing block 6 drives the inserting rod 7 to swing, the bottom of the inserting rod 7 is connected with a spherical head 71, the inserting rod 7 drives the spherical head 71 to swing, the top center of the grinding tool 8 is provided with a spherical hole corresponding to the spherical head 71, the spherical head 71 of the inserted rod 7 penetrates into a spherical hole of the grinding tool 8, the spherical head 71 drives the grinding tool 8 to swing, the rear cover of the hydraulic machine is fixed on a platform below the workbench 1 through a bench vice, the grinding tool 8 is arranged on the grinding surface of the rear cover of the hydraulic machine, and the grinding tool 8 swings to grind the rear cover of the hydraulic machine.
Before grinding by using the grinding device, the driving mechanism is connected with the swing installation, a product is fixed on a platform below the workbench 1 by a bench vice, the inserted bar 7 is rotated to raise the height of the inserted bar 7, the grinding tool 8 is conveniently arranged on the grinding surface of the product, after the grinding tool 8 is placed, the inserted bar 7 is rotated again to lower the height of the inserted bar 7, the spherical head 71 connected with the bottom of the inserted link 7 penetrates into the spherical hole of the grinding tool 8, the linear motor 2 is started, the linear motor 2 drives the movable rod 3 to move left and right in the horizontal direction, the movable rod 3 drives the movable block 4 and the driving block 5 to move horizontally, the driving block 5 drives the top end of the swinging block 6 to rotate, the top end of the swinging block 6 rotates, the swinging block 6 can be driven to swing, the bottom of the swinging block 6 drives the inserting rod 7 to swing, and the inserting rod 7 swings to drive the grinding tool 8 to swing to grind the product.
The first embodiment is as follows:
the first product is the back lid of the double-arc way of hydraulic press, and the second product is the oil distribution dish, grinds frock and the shaping of first oil distribution dish grinding frock according to the back lid of the double-arc way of hydraulic press and the corresponding back lid shaping of the shape and the size preparation of oil distribution dish, electroplates on the first abrasive surface that grinds frock and the shaping of first oil distribution dish grinding frock at back lid shaping and adsorbs the emery that the one deck granularity is 590 um.
When joining in marriage and grinding, earlier grind the back lid, grind frock 8 for back lid shaping grinding frock this moment, be fixed in the platform of workstation 1 below with the back lid through the bench vice on, then cover the shaping grinding worker after with and install on the abrasive surface of back lid, back lid shaping grinding frock is put the back well, rotatory inserted bar 7 again, make the spherical head 71 of connecting bottom the inserted bar 7 wear into the spherical hole of back lid shaping grinding frock, start linear electric motor 2, drive swing piece 6 realizes the swing, swing piece 6 drives back lid shaping grinding frock swing and grinds the double-arc way of back lid.
Grind the oil distribution disc again, grind frock 8 this moment and grind frock for first oil distribution disc shaping, will divide the oil distribution disc to be fixed in on the platform of workstation 1 below through the bench vice, then grind the frock with first oil distribution disc shaping and locate on the first abrasive surface of oil distribution disc, first oil distribution disc shaping grinds the frock and puts the back, rotatory inserted bar 7 again, make the spherical head 71 that inserted bar 7 bottoms are connected wear into the spherical hole of first oil distribution disc shaping grinding frock, start linear electric motor 2, the swing is realized to drive swing piece 6, swing piece 6 drives first oil distribution disc shaping and grinds the first abrasive surface of oil distribution disc in the swing of frock, join in marriage the back lid of double-arc way after grinding, oil distribution disc surface roughness value is not more than 0.3 um.
The method is used for matching and grinding the rear cover and the oil distribution disc of the coupled double-arc channel, so that the contact area between the oil distribution disc and the cylinder body is increased, the contact area between the rear cover and the oil distribution disc is also increased, the size consistency and the stability of the arc channels on the two sides of the rear cover can be effectively ensured by adopting the process, and the matching and grinding time is increased by 1.5 times compared with that of manual matching and grinding.
Example two:
the first product is a pump liner of a hydraulic plunger pump of the hydraulic press, the second product is an oil distribution disc, a pump liner forming grinding tool and a second oil distribution disc forming grinding tool which correspond to each other are manufactured according to the shape and the size of the pump liner and the oil distribution disc of the hydraulic plunger pump of the hydraulic press, and a layer of carborundum with the granularity of 710um is electroplated and adsorbed on the surfaces of second grinding surfaces of the pump liner forming grinding tool and the second oil distribution disc forming grinding tool.
When joining in marriage and researching, grind the pump courage earlier, grind 8 frock for pump courage shaping grinding frock this moment, be fixed in the platform of workstation 1 below with the pump courage through the bench vice on, then on locating the grinding surface of pump courage with pump courage shaping grinding frock, pump courage shaping grinding frock puts the back, rotatory inserted bar 7 again, make the spherical head 71 that the inserted bar 7 bottom is connected penetrate the spherical hole of pump courage shaping grinding frock, start linear electric motor 2, drive swing block 6 realizes the swing, swing block 6 drives the swing of pump courage shaping grinding frock and grinds the pump courage.
Grind the oil pan again, grind 8 frock for the second of this moment divides the oil pan shaping and grinds frock, will divide the oil pan to be fixed in on the platform of 1 below of workstation through the bench vice, then divide the second to divide the oil pan shaping to grind the frock and locate on the second abrasive surface that divides the oil pan, the second divides the oil pan shaping to grind the frock and put well the back, rotatory inserted bar 7 again, make the spherical head 71 that the 7 bottoms of inserted bar are connected penetrate the spherical hole that the second divides the oil pan shaping to grind the frock, start linear electric motor 2, the swing is realized to drive swing piece 6, swing piece 6 drives the swing of second branch oil pan shaping and grinds the frock and divides oil pan second abrasive surface, join in marriage the pump courage of ground back hydraulic pressure plunger pump, divide oil pan surface roughness value to be not more than 0.2 um.
The pump liner and the oil distribution disc of the coupled hydraulic plunger pump are matched by using the method, and the contact area of the pump liner and the oil distribution disc can be effectively increased for the pump liner of the hydraulic plunger pump through the matching and grinding process, so that an oil film can be effectively generated in the high-speed rotation process of the hydraulic plunger pump, the phenomena of pump vibration and dry grinding of the pump liner oil distribution disc in the use process of the plunger pump are avoided, the stability of the overall performance of the plunger pump is improved, the labor cost can be effectively saved, and the working efficiency is improved.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. A hydraulic press coupling accessory grinder which characterized in that: the grinding device comprises a driving mechanism and a swinging mechanism; the driving mechanism comprises a linear motor, a moving rod, a moving block and a driving block, and the swinging mechanism comprises a swinging block, an inserting rod and a grinding tool;
the linear motor is arranged on the workbench, the output end of the linear motor is connected with the movable rod, the linear motor drives the movable rod to move in the horizontal direction, the workbench is provided with a guide block, a guide hole is formed in the guide block, the movable rod penetrates through the guide hole in the guide block and is arranged horizontally, and one end, far away from the linear motor, of the movable rod is connected with a movable block;
two symmetrical fixing plates are fixedly arranged on the side face, far away from the moving rod, of the moving block, the fixing plates are connected with one end of the I-shaped driving block through bolts, and the other end of the I-shaped driving block is hinged to the top end of the swinging block;
the grinding tool is characterized in that an empty groove is formed in the workbench, the swinging block is longitudinally arranged in the empty groove, the bottom of the workbench is connected with a mounting plate, the mounting plate is L-shaped, a transverse plate of the mounting plate is fixed with the workbench through a bolt, a longitudinal plate of the mounting plate is arranged below the empty groove of the workbench, the center of the swinging block is rotatably connected with the longitudinal plate of the mounting plate, a threaded hole is formed in the bottom of the swinging block, external threads are formed in the top of the inserting rod, the inserting rod is fixedly screwed with the threads at the bottom of the swinging block, a spherical head is connected to the bottom of the inserting rod, a spherical hole corresponding to the spherical head is formed in the center of the top of the grinding tool, and the spherical head of the inserting rod penetrates into the spherical hole of the grinding tool;
the grinding tool is arranged on the grinding surface of the rear cover of the hydraulic machine, and the rear cover of the hydraulic machine is fixed on a platform below the workbench through a bench vice.
2. The hydraulic machine coupling accessory grinding apparatus of claim 1, wherein: the guide block is fixed on the workbench through a bolt.
3. The hydraulic machine coupling accessory grinding apparatus of claim 1, wherein: one end of the moving rod, which is far away from the linear motor, is connected with a screw rod, the diameter of the screw rod is smaller than that of the moving rod, and the screw rod penetrates through the center of the moving block and is locked and fixed through a nut.
4. A method of lapping accessories using the hydraulic press coupling accessory grinding apparatus of claim 1, wherein: the method comprises the following steps:
s1, forming and manufacturing accessories: manufacturing corresponding part forming dies according to the sizes and the shapes of the first product and the second product of the coupling part, placing the raw materials in the corresponding part forming dies, and performing compression forming under the pressure of 500-700MPa to obtain blanks of the first product and the second product, wherein the density of the blanks is controlled to be 6.4-6.8g/cm 3;
s2, pre-burning: heating the first product and the second product blank which are manufactured and formed to 1100-plus 1150 ℃ in a protective atmosphere environment, preserving heat for 1-1.5 hours, cooling along with the furnace to obtain two pre-sintered blanks, respectively putting the two blanks into an ion nitriding furnace for gas nitriding, controlling the nitriding temperature to be 500 +/-10 ℃, keeping the nitriding temperature for 20-30 hours, and keeping the hardness after nitriding to be more than 700 HV;
s3, lapping and finishing:
s3.1, manufacturing a first forming grinding tool and a second forming grinding tool which correspond to each other according to the shapes and the sizes of the first product and the second product, wherein the grinding surfaces of the first forming grinding tool and the second forming grinding tool are reserved with electroplated layer sizes of 2-3 mm;
s3.2, electroplating the first molding grinding tool and the second molding grinding tool through an electroplating process, electroplating and adsorbing a layer of diamond dust with corresponding specifications on the surfaces of the grinding surfaces of the first molding grinding tool and the second molding grinding tool, wherein the sizes of the electroplated first molding grinding tool and the electroplated second molding grinding tool correspond to the sizes of the first product and the second product;
s3.3, mounting the first forming grinding tool on the grinding device, and after the first forming grinding tool is mounted, lapping the surface to be ground of the first product by using carborundum on the grinding surface of the first forming grinding tool, wherein the surface roughness value of the first product after lapping is not more than 0.3 um; installing a second molding grinding tool on the grinding device of claim 1, and lapping the surface to be ground of a second product by using carborundum on the grinding surface of the second molding grinding tool, wherein the surface roughness value of the second product after lapping is not more than 0.3 um;
and S3.4, respectively lapping the surfaces to be ground of the first product and the second product to obtain a coupled first product and a coupled second product.
5. The method of fitting research according to claim 4, wherein: in the step S3.2, when electroplating is carried out by an electroplating process, the first product and the second product are subjected to pre-plating treatment, including oil removal and activation, and the diamond is subjected to wetting treatment, boiled for 30 minutes by nitric acid and thoroughly washed, wherein the electroplating solution comprises the components of nickel sulfate 250-270g/L, nickel chloride 40-50g/L, boric acid 40-50g/L, sodium dodecyl sulfate 0.01-0.03g/L, saccharin 0.2-0.5g/L and 1, 4-butynediol 0.1-0.3g/L, the temperature of the electroplating solution is 50-55 ℃, and the pH value is 4-5.
6. The method of fitting research according to claim 4, wherein: the first product and the second product of the coupling fitting are respectively a rear cover and an oil distribution disc of a double-arc channel of the hydraulic machine.
7. The method of fitting research according to claim 4, wherein: the first product and the second product of the coupling fitting are respectively a pump liner and an oil distribution disc of a hydraulic plunger pump of a hydraulic machine.
CN202011148602.3A 2020-10-23 2020-10-23 Matching method of coupling fittings of hydraulic machine Active CN112247682B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011148602.3A CN112247682B (en) 2020-10-23 2020-10-23 Matching method of coupling fittings of hydraulic machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011148602.3A CN112247682B (en) 2020-10-23 2020-10-23 Matching method of coupling fittings of hydraulic machine

Publications (2)

Publication Number Publication Date
CN112247682A CN112247682A (en) 2021-01-22
CN112247682B true CN112247682B (en) 2021-12-28

Family

ID=74261815

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011148602.3A Active CN112247682B (en) 2020-10-23 2020-10-23 Matching method of coupling fittings of hydraulic machine

Country Status (1)

Country Link
CN (1) CN112247682B (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5662518A (en) * 1996-05-03 1997-09-02 Coburn Optical Industries, Inc. Pneumatically assisted unidirectional conformal tool
CN102009390B (en) * 2009-09-04 2012-08-22 沈阳中科超硬磨具磨削研究所 Electroforming high-precision profiling grinding wheel and preparation process thereof
CN102581783B (en) * 2012-03-08 2014-03-26 宁波大学 Method for manufacturing electroplated diamond grinding wheel capable of being recycled easily
CN102851576B (en) * 2012-09-14 2014-01-01 益阳世龙新材料有限公司 Hydraulic plunger pump/hydraulic plunger motor cylinder body material and preparation method
CN105714196B (en) * 2016-04-11 2017-08-04 陈玉金 A kind of manufacture method of plunger pair for plunger pump
CN106392912B (en) * 2016-09-30 2018-10-12 河南工业大学 Single layer of super hard abrasive formed grinding wheel and its manufacturing method
CN107225497A (en) * 2017-07-03 2017-10-03 永嘉通球阀门有限公司 Spheroid autogenous mill
CN110421447A (en) * 2018-11-14 2019-11-08 西安成立航空制造有限公司 Special-shaped small precision part grinding device

Also Published As

Publication number Publication date
CN112247682A (en) 2021-01-22

Similar Documents

Publication Publication Date Title
CN103659535B (en) Workpiece surface machining system
CN201872037U (en) Quartz plate chamfering device and subsequent quartz plate processing system
KR101616643B1 (en) Automatic Grinding Apparatus for Inner Surface of Container
CN206567953U (en) A kind of bearing outer ring polishing machining production line
CN112247682B (en) Matching method of coupling fittings of hydraulic machine
CN210732068U (en) Machine part presss from both sides tight equipment of polishing
CN210650279U (en) Burnishing device is used in emery wheel production
CN108500768A (en) Kitchen range liquid-bearing pan automatic deburring machine
CN110695782A (en) Numerical control grinding machine
CN212578370U (en) But angle regulation's automobile parts is with equipment of polishing
CN211940143U (en) Vertical cylindrical grinding machine
CN213889440U (en) Automatic grinding machine
CN211760402U (en) Combined efficient grinding and pouring all-in-one machine
CN211805227U (en) Psammitolite unhairing limit device
CN204604009U (en) Change gear box overlap removal device
CN209256670U (en) A kind of precision grinder of cast(ing) surface processing
CN208146713U (en) A kind of high precision belt wheel spinning apparatus
CN110860966A (en) Combined efficient grinding and pouring all-in-one machine
CN219152493U (en) Grinding and polishing device for fused zirconia corundum bricks
CN211708928U (en) Mould grinding machine with good stability
CN214054840U (en) Burnishing device is used in metal casting
CN216801963U (en) High accuracy is grinding device for gear machining
CN213136216U (en) Polishing equipment for manufacturing die
CN112139936B (en) Casting burr polishing equipment and polishing process thereof
CN218017709U (en) Grinding device is used in processing of cone crusher welt

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant