CN213888277U - Equipment for finish machining of large-cylinder-diameter piston pin hole - Google Patents
Equipment for finish machining of large-cylinder-diameter piston pin hole Download PDFInfo
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- CN213888277U CN213888277U CN202022863893.6U CN202022863893U CN213888277U CN 213888277 U CN213888277 U CN 213888277U CN 202022863893 U CN202022863893 U CN 202022863893U CN 213888277 U CN213888277 U CN 213888277U
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Abstract
The utility model relates to an equipment of big cylinder diameter piston pin hole of finish machining belongs to internal-combustion engine technical field. The equipment comprises a base, supporting bridges, plankers, a liquid static pressure electric spindle, a pressing mechanism and a pin hole centering mechanism, wherein the supporting bridges are arranged at two ends of the base respectively, the liquid static pressure electric spindle is arranged on one supporting bridge and connected with a cutter bar, a cutter body is arranged on the cutter bar, the pin hole centering mechanism is arranged on the other supporting bridge, the plankers are arranged on the base in a sliding mode, pistons are arranged on the plankers, the pressing mechanism is arranged on one side of each planker, and the pistons are pressed through the pressing mechanism. The utility model discloses can a quire processing big cylinder diameter piston both ends pinhole, guarantee both ends pinhole axiality, the machining precision is high, has improved work efficiency.
Description
Technical Field
The utility model relates to an equipment of big cylinder diameter piston pin hole of finish machining belongs to internal-combustion engine technical field.
Background
The piston is a key part of an engine and has the function of transmitting gas pressure and inertia force on the piston to a connecting rod through a pin seat and a piston pin so as to complete conversion of kinetic energy to heat energy. The piston pin hole is the connecting position of the piston and the piston pin, and plays a role, but is not ignored, and the piston pin passes through the piston pin hole and the connecting rod in a general connecting mode, so that the piston and the connecting rod are assembled together. Along with the continuous promotion of engine power and explosion pressure, the piston pin bears violent impact force in piston reciprocating motion, can produce the deformation, for reducing the piston pin deformation, reduces the wearing and tearing of piston pin hole, more and more piston pin holes no longer design for the cylinder hole, but design for conical surface pinhole or oval pinhole, non-cylinder hole is collectively called special-shaped pinhole.
The special-shaped pin holes increase the processing difficulty, the processing of the piston pin holes is divided into rough processing and finish processing, the special-shaped pin holes are processed in the finish processing procedure, one-time clamping and one-time processing are carried out, the diameter of the small-cylinder-diameter piston is small, and the short cutter rod can be completed, but the large-cylinder-diameter ship electric piston is large in piston diameter and large in span of two pin holes, the two pin holes can be processed one time by a long cutter rod, the processing precision can be influenced by lengthening the cutter rod, the two ends are processed or processed twice, the coaxiality is difficult to guarantee, and the strict requirement is provided for processing equipment.
In view of the above, it is necessary to design a device for machining pin holes at two ends with high machining precision.
Disclosure of Invention
The not enough to prior art, the utility model provides an equipment of big cylinder diameter piston pin hole of finish machining can a quire processing big cylinder diameter piston both ends pinhole, guarantees both ends pinhole axiality, and the machining precision is high, has improved work efficiency.
The technical scheme of the utility model as follows:
an apparatus for fine machining large-diameter piston pin holes comprises a base, a supporting bridge, a dragging plate, a liquid static pressure electric spindle, a pressing mechanism and a pin hole centering mechanism, wherein,
the two ends of the base are respectively provided with a supporting bridge, one supporting bridge is provided with a liquid static pressure electric spindle, the liquid static pressure electric spindle is connected with a cutter bar, a cutter body is arranged on the cutter bar, the other supporting bridge is provided with a pin hole centering mechanism, a piston is positioned through the pin hole centering mechanism, the pin hole axis on the piston is coaxial with the liquid static pressure electric spindle, the base is provided with a carriage in a sliding mode, the carriage is provided with the piston, one side of the carriage is provided with a pressing mechanism, and the piston is pressed through the pressing mechanism.
According to the utility model discloses, preferred, liquid static electricity main shaft passes through elastic deformation body connection cutter arbor, and elastic deformation body is the spring steel material, and mechanical strength is high, and toughness is good, and is not fragile, and the installation speed governing is convenient.
According to the utility model discloses, preferred, pinhole centering mechanism includes centering box, sleeve, centering edging round pin and centering cylinder, and the centering box sets up on supporting the bridge, sets up the sleeve in the centering box, and the sleeve sets up the centering edging round pin towards the one end of piston, and the sleeve other end sets up the centering cylinder, and is flexible through centering cylinder drive sleeve, and then drives the centering edging round pin and stretch into the piston pin hole, fixes a position the piston.
According to the utility model discloses, preferred, hydrostatic pressure electricity main shaft is coaxial with the sleeve, guarantees that pinhole centering mechanism is coaxial with hydrostatic pressure electricity main shaft to the pinhole axis on the piston location back piston.
According to the utility model discloses, preferred, hold-down mechanism compresses tightly the support including compressing tightly the support, compressing tightly the dish and compressing tightly the cylinder, compresses tightly the support and sets up on the planker, compresses tightly the cylinder and connects and compress tightly the dish, compresses tightly the dish through compressing tightly the cylinder drive and pushes down, fixes the piston.
According to the utility model discloses, further preferred, it is circular dish to compress tightly the dish, and the convenience compresses tightly the piston.
According to the utility model discloses, preferred, set up linear guide on the base, set up the planker on the linear guide, set up ball in the linear guide, ball connection planker, ball one end sets up servo motor, drives the planker through servo motor drive ball and follows linear guide reciprocating motion.
According to the utility model discloses, it is preferred, set up the positioning disk on the planker, set up circular recess on the positioning disk, the recess shape matches with the piston, and the piston sets up in the recess, carries on spacingly through the positioning disk to the piston.
According to the utility model discloses, preferred, the base is cuboid case frame formula structure.
According to the utility model discloses, it is preferred, base and planker adopt the resin sand material, and integrated casting shaping, stability is good.
The working process of the equipment for finish machining the large-cylinder-diameter piston pin hole is as follows:
(1) the piston after rough machining is arranged on a positioning disc, a pin hole centering mechanism is started, a centering trimming pin extends into a piston pin hole after rough machining, and the piston is positioned, so that the axis of the pin hole is coaxial with the hydrostatic pressure electric spindle;
(2) the pressing mechanism is started, the pressing disc falls down, and the fixed piston is pressed;
(3) the servo motor is started to drive the carriage and the piston to move towards the liquid static pressure electric spindle cutter bar direction, the liquid static pressure electric spindle carries out micron feeding in the spindle direction, and special-shaped pin control is processed by matching with the servo motor.
The beneficial effects of the utility model reside in that:
1. the utility model discloses can a quire processing big cylinder diameter piston both ends pinhole, guarantee both ends pinhole axiality, the machining precision is high, has improved work efficiency.
2. The utility model discloses a liquid static pressure electricity main shaft passes through elastic deformation body connection cutter arbor, and elastic deformation body is the spring steel material, and mechanical strength is high, and toughness is good, and is not fragile, and the installation speed governing is convenient.
3. The utility model discloses a hydrostatic pressure electricity main shaft drive cutter arbor, hydrostatic pressure electricity main shaft adopt hydraulic oil to be working medium, have the high rigidity characteristic that bears, do not have wearing and tearing between the friction pair, bear the oil film and have the homogenization error effect for hydrostatic pressure electricity main shaft has minimum runout and axial float.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the structure of the present invention;
FIG. 3 is a left side view of the structure of the present invention;
fig. 4 is a top view of the structure of the present invention;
fig. 5 is a schematic structural view of the hydrostatic piezoelectric spindle of the present invention;
FIG. 6 is a schematic structural view of the pin hole centering mechanism of the present invention;
fig. 7 is a schematic structural view of the pressing mechanism of the present invention;
wherein: 1. a base; 2. a support bridge; 3. a carriage; 4. a piston; 5. hydrostatic motorized spindle; 6. a hold-down mechanism; 7. a pin hole centering mechanism; 8. an elastic deformable body; 9. a cutter bar; 10. centering the box body; 11. a sleeve; 12. centering and trimming the edge pin; 13. a centering cylinder; 14. compressing the bracket; 15. a compression disc; 16. a pressing cylinder; 17. a linear guide rail; 18. a ball screw; 19. a pin hole; 20. and (6) positioning a disc.
Detailed Description
The present invention will be further described, but not limited to, by the following examples in conjunction with the accompanying drawings.
Example 1:
as shown in fig. 1-7, the present embodiment provides an apparatus for finish machining a large-bore piston pin hole, which includes a base 1, a supporting bridge 2, a carriage 3, a liquid static pressure spindle 5, a pressing mechanism 6, and a pin hole centering mechanism 7, wherein,
two ends of the base 1 are respectively provided with a supporting bridge 2, one supporting bridge 2 is provided with a liquid static pressure spindle 5, the liquid static pressure spindle 5 is connected with a cutter bar 9, the cutter bar 9 is provided with a cutter body, the other supporting bridge is provided with a pin hole centering mechanism 7, a piston 4 is positioned through the pin hole centering mechanism 7, the pin hole axis of the piston 4 is coaxial with the liquid static pressure spindle 5, the base 1 is provided with a carriage 3 in a sliding manner, the carriage 3 is provided with the piston 4, one side of the carriage is provided with a pressing mechanism 6, and the piston is pressed through the pressing mechanism 6.
Pinhole centering mechanism 7 includes centering box 10, sleeve 11, centering edging round pin 12 and centering cylinder 13, and centering box 10 sets up on supporting the bridge, sets up sleeve 11 in the centering box 10, and sleeve 11 sets up centering edging round pin 12 towards the one end of piston, and the sleeve 11 other end sets up centering cylinder 13, and it is flexible through centering cylinder 13 drive sleeve 11, and then drives centering edging round pin 12 and stretch into piston pin hole 19, fixes a position the piston.
The hydrostatic pressure electric main shaft 5 is coaxial with the sleeve 11, so that the pin hole axis on the piston is coaxial with the hydrostatic pressure electric main shaft after the pin hole centering mechanism 7 positions the piston.
The pressing mechanism 6 comprises a pressing support 14, a pressing disc 15 and a pressing cylinder 16, the pressing support 14 is arranged on the carriage 3, the pressing cylinder 16 is arranged on the pressing support 14, the pressing cylinder 16 is connected with the pressing disc 15, the pressing disc 15 is driven to press downwards through the pressing cylinder 16 to fix the piston 4, and the pressing disc 15 is a circular disc and is convenient to press the piston.
The base 1 is provided with a linear guide rail 17, the linear guide rail 17 is provided with a carriage 3, a ball screw 18 is arranged in the linear guide rail 17, the ball screw 18 is connected with the carriage 3, one end of the ball screw 18 is provided with a servo motor, and the ball screw is driven by the servo motor to drive the carriage to reciprocate along the linear guide rail.
The carriage 3 is provided with a positioning disc 20, the positioning disc 20 is provided with a circular groove, the shape of the groove is matched with that of the piston, and the piston is arranged in the groove and is limited by the positioning disc.
The working process of the equipment for finish machining the large-cylinder-diameter piston pin hole is as follows:
(1) the piston after rough machining is arranged on a positioning disc, a pin hole centering mechanism is started, a centering trimming pin extends into a piston pin hole after rough machining, and the piston is positioned, so that the axis of the pin hole is coaxial with the hydrostatic pressure electric spindle;
(2) the pressing mechanism is started, the pressing disc falls down, and the fixed piston is pressed;
(3) the servo motor is started to drive the carriage and the piston to move towards the liquid static pressure electric spindle cutter bar direction, the liquid static pressure electric spindle performs micron feeding in the spindle direction, and 2 special-shaped pin controls are processed by matching with the servo motor.
Example 2:
the utility model provides an equipment of fine machining big cylinder diameter piston pin hole, the structure is as embodiment 1, the difference lies in, liquid static pressure electricity main shaft 5 passes through elastic deformation body 8 and connects cutter arbor 9, and elastic deformation body is the spring steel material, and mechanical strength is high, and toughness is good, and is not fragile, and the installation speed governing is convenient.
Example 3:
the utility model provides an equipment of big cylinder diameter piston pin hole of fine machining, the structure is as embodiment 1 the difference lies in, and base 1 is cuboid case frame formula structure, and base and planker adopt the resin sand material, and integrated casting shaping, stability is good.
Claims (10)
1. The equipment for finish machining the large-cylinder-diameter piston pin hole is characterized by comprising a base, a supporting bridge, a planker, a liquid static pressure spindle, a pressing mechanism and a pin hole centering mechanism, wherein,
the two ends of the base are respectively provided with a supporting bridge, one supporting bridge is provided with a liquid static pressure electric spindle, the liquid static pressure electric spindle is connected with a cutter bar, a cutter body is arranged on the cutter bar, the other supporting bridge is provided with a pin hole centering mechanism, the base is provided with a carriage in a sliding mode, the carriage is provided with a piston, one side of the carriage is provided with a pressing mechanism, and the piston is pressed through the pressing mechanism.
2. The apparatus according to claim 1 wherein the hydrostatic spindle is connected to the tool holder by an elastic deformable body, the elastic deformable body being made of spring steel.
3. The apparatus according to claim 1 wherein the pin bore centering mechanism comprises a centering box, a sleeve, a centering chamfered pin, and a centering cylinder, the centering box being disposed on the support bridge, the sleeve being disposed within the centering box, the sleeve having the centering chamfered pin at an end of the sleeve facing the piston and the centering cylinder at an opposite end of the sleeve.
4. An apparatus for finishing a large bore piston pin bore according to claim 3 wherein the hydrostatic spindle is coaxial with the sleeve.
5. The apparatus according to claim 1, wherein the hold-down mechanism comprises a hold-down bracket, a hold-down disk, and a hold-down cylinder, the hold-down bracket is disposed on the carriage, the hold-down cylinder is disposed on the hold-down bracket, and the hold-down cylinder is connected to the hold-down disk.
6. The apparatus for finishing a large bore piston pin bore according to claim 5 wherein the hold-down disc is a circular disc.
7. The apparatus according to claim 1, wherein the base has a linear guide, the linear guide has a carriage, the linear guide has a ball screw therein, the ball screw is connected to the carriage, and a servo motor is provided at one end of the ball screw.
8. The apparatus according to claim 1 wherein the carriage has a puck having a circular recess shaped to match the piston, the piston being disposed in the recess.
9. The apparatus for finishing a large bore piston pin bore according to claim 1 wherein the base is a rectangular parallelepiped box frame structure.
10. The apparatus according to claim 1, wherein the base and the carriage are formed by casting resin sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022863893.6U CN213888277U (en) | 2020-12-03 | 2020-12-03 | Equipment for finish machining of large-cylinder-diameter piston pin hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022863893.6U CN213888277U (en) | 2020-12-03 | 2020-12-03 | Equipment for finish machining of large-cylinder-diameter piston pin hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213888277U true CN213888277U (en) | 2021-08-06 |
Family
ID=77100017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022863893.6U Active CN213888277U (en) | 2020-12-03 | 2020-12-03 | Equipment for finish machining of large-cylinder-diameter piston pin hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213888277U (en) |
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2020
- 2020-12-03 CN CN202022863893.6U patent/CN213888277U/en active Active
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