CN100455412C - Press-fitting tool for engine piston pin - Google Patents
Press-fitting tool for engine piston pin Download PDFInfo
- Publication number
- CN100455412C CN100455412C CNB2005100571244A CN200510057124A CN100455412C CN 100455412 C CN100455412 C CN 100455412C CN B2005100571244 A CNB2005100571244 A CN B2005100571244A CN 200510057124 A CN200510057124 A CN 200510057124A CN 100455412 C CN100455412 C CN 100455412C
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- hole
- pilot hole
- seat
- press
- guide
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Abstract
The present invention relates to a press assembly tool of an engine piston pin. A guide seat (3), a balancing seat (9) and an operating rod seat (16) are arranged on a base plate (11), wherein a press head (1) is arranged in a guide hole of the upper end of the guide seat (3); a vertical balancing hole and a horizontal balancing hole are arranged on the balancing seat (9), and a horizontal balancing rod (10) of which both ends are symmetrically upward inclined planes is arranged in the horizontal balancing hole; a positioning seat (6) is arranged on the balancing seat (9); a guide hole, a balancing hole and a slotted hole are arranged on the positioning seat (6); a guide rod (5) is arranged in the guide hole; a support rod is arranged in the balancing hole, and the lower end of the support rod is matched with the horizontal balancing rod (10); an operating rod (14) is hinged on the operating rod seat (16); one end of a deflector rod (19) hinged with the lower end of the operating rod (14) passes through the slotted hole on the positioning seat (6) and is connected with the guide rod (5). The present invention enables the press fitting work of the piston pin to be convenient and fast, enhances production efficiency, and can obviously enhance the assembly quality of the piston pin.
Description
Technical field
The invention belongs to technical field of tooling clamps, specifically, relate to a kind of press-fitting tool for engine piston pin.
Background technology
The piston rod group is an in-engine vitals, and the quality of its assembly quality is to the sealing of cylinder operation with direct influence is arranged service life.Piston pin can be divided into two kinds of full floating wrist pin and semi-floating piston pins according to the matching relationship of piston pin and piston pin hole and piston pin and small end of connecting rod pin-and-hole.Full floating wrist pin is meant between piston pin and piston pin hole and piston pin and the small end of connecting rod pin-and-hole and is matched in clearance; Semi-floating piston pin is meant that piston pin and piston pin hole are matched in clearance, and piston pin and small end of connecting rod pin-and-hole are interference fit.Even full floating wrist pin cold charge at normal temperatures also may be very tight,, promptly before assembling, need piston or small end of connecting rod heating so generally want hot charging.Its assembling process is: piston is placed on the location-plate, clean piston pin hole, with hand piston pin is pushed in the piston pin hole, immediately small end of connecting rod is stretched in the piston, make piston pin aim at the pin-and-hole of small end of connecting rod, an end that knocks piston pin with wooden mallet makes piston pin pass through the small end of connecting rod pin-and-hole until piston other end pin-and-hole edge again, reinstall lock ring and finish whole assembling, because used tool is very scattered, and piston or small end of connecting rod need assemble under the condition of high temperature, therefore operator's action must need many people to assist to finish rapidly, and assembly precision is difficult to guarantee.
Summary of the invention
The problem to be solved in the present invention provides a kind of handled easily, and is time saving and energy saving, and can improve the press-fitting tool for engine piston pin of assembly quality.
For addressing the above problem, press-fitting tool for engine piston pin of the present invention comprises base, guide holder, positioning seat, balance seat and operating rod bearing, wherein, guide holder is fixedly mounted on the base, and its upper end plate is provided with pilot hole, and pressure head is housed in the pilot hole; The balance seat is fixedly mounted on the base, and be positioned at guide holder, on the balance seat, be provided with two VE holes and horizontal equilibrium hole, the vertical and intersectant centerline in VE hole and horizontal equilibrium hole, be provided with the horizontal equilibrium bar in the horizontal equilibrium hole, the longitudinal section of horizontal equilibrium bar is an isosceles trapezoid, and its base is positioned at the below; Positioning seat is fixedly mounted on the balance seat, which is provided with pilot hole, this pilot hole is positioned under the pilot hole of guide holder, guide post is housed in the pilot hole, one side of positioning seat has one section slotted eye that communicates with pilot hole, the bilateral symmetry of pilot hole is provided with two balance pipes, corresponding and big or small matching of two VE hole sites on two balance pipes and the balance seat, the two VE holes that enter respectively behind two balance pipes on the balance seat are passed in the lower end of two support bars, and are suitable with the inclined-plane at described horizontal equilibrium bar two ends respectively and contact; Operating rod bearing is fixedly mounted on the base, and is positioned at the outside of guide holder, and its upper end is hinged with control stick, and the lower end of control stick is hinged with driving lever, and an end of driving lever passes the lower end that enters behind the slotted eye on the positioning seat in the pilot hole with guide post and links.
Base among the present invention plays a part to support and location and installation guide holder, positioning seat, balance seat and operating rod bearing.Guide holder plays the guide-localization effect to pressure head, and pressure head can balance be descended and reliable location under the effect of press.Positioning seat plays the guide-localization effect to guide post and support bar, makes them carry out lifting in vertical direction.Support bar is arranged in the VE hole of the balance pipe and the balance seat of positioning seat, and piston is being supported in the upper end during assembling.Because the outer surface of piston is a black skin, the piston face of piston pin both sides is inconsistent usually to the active force of two support bars during assembling, horizontal equilibrium bar two ends in the balance seat be the symmetry towards ramp, and the lower end of two support bars and horizontal equilibrium bar two ends is suitable and contact towards ramp, therefore when two support bars stressed when inconsistent, the horizontal equilibrium bar can horizontally slip, ramp effect by two ends, stressed big support bar is descended, the stressed little support bar equal height that then rises, so constantly adjusting, make the stressed poised state that is in all the time of two support bars, thereby make the suffered support force of the piston of piston pin both sides consistent all the time, stressed equilibrium when having guaranteed the piston pin assembling, indeformable in the piston boss hole.Control stick drives driving lever and rises when its pin joint rotates, thus on lift guide post.
Remarkable result of the present invention is: make the work that press-fits of piston pin convenient and swift, improved production efficiency, and can significantly improve the assembly quality of piston pin.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the A-A cutaway view of Fig. 1;
Fig. 4 is the structural representation of positioning seat 6 among the present invention;
Fig. 5 is the vertical view of Fig. 4;
Fig. 6 is the B-B cutaway view of Fig. 4;
Fig. 7 is the structural representation of balance seat 9 among the present invention;
Fig. 8 is the vertical view of Fig. 7;
Fig. 9 is the structural representation of slide block 18 among the present invention;
Figure 10 is the C-C cutaway view of Fig. 9.
Among the figure: 9a horizontal equilibrium hole, pressure head 1 circular orientation step 1a fairlead, 2 guide holder 3 support bars, 4 guide post 5 limited step 5a hole 5b positioning seats, 6 pilot hole 6a slotted eye 6b balance pipe 6c limited step 6d spring 7 limited post 8 balance seats, 9 VE hole 9b horizontal equilibrium bar 10 bases 11 handles 12 rivets 13 control sticks 14 pins 15 operating rod bearings 16 pins 17 slide blocks 18 slide opening 18a driving levers 19 bolts 20 plain washers 21 straight pins 22 pistons 23 piston pins 24 bolts 25 bolts 26 bolts 27 plain washers 28 plain washers 29
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:
Extremely shown in Figure 8 as Fig. 1, base 11 is plate shaped, and guide holder 3 is fixedly mounted on the base 11 by bolt 25, plain washer 21 and positions with straight pin 22, and guide holder 3 is " ∏ " shape, guide holder 3 upper end plates are provided with pilot hole, and pressure head 1 is housed in the pilot hole.Balance seat 9 is fixedly mounted on the base 11 by bolt 26, plain washer 28, and be positioned at guide holder 3, on balance seat 9, be provided with two VE hole 9a and horizontal equilibrium hole 9b, the vertical and intersectant centerline of VE hole 9a and horizontal equilibrium hole 9b, horizontal equilibrium hole 9b is provided with horizontal equilibrium bar 10, the longitudinal section of horizontal equilibrium bar 10 is an isosceles trapezoid, its base be positioned at the below (be horizontal equilibrium bar 10 both ends of the surface for the symmetry towards ramp).Positioning seat 6 is fixedly mounted on the balance seat 9 by bolt 20, plain washer 29, positioning seat 6 is provided with pilot hole 6a, this pilot hole 6a is positioned under the pilot hole of guide holder 3, guide post 5 is housed in the pilot hole 6a, one side of positioning seat 6 has one section slotted eye 6b that communicates with pilot hole 6a, and the length of slotted eye 6b vertical direction should be greater than the range on driving lever 19 vertical direction.The bilateral symmetry of pilot hole 6a is provided with two balance pipe 6c, corresponding and big or small matching of 9a position, two VE holes on two balance pipe 6c and the balance seat 9, the two VE hole 9a that enter respectively behind the two balance pipe 6c on the balance seat 9 are passed in the lower end of two support bars 4, and are suitable with the inclined-plane at described horizontal equilibrium bar 10 two ends respectively and contact.Operating rod bearing 16 usefulness bolts 27 are fixedly mounted on the base 11, and be positioned at the outside of guide holder 3, its upper end is hinged with control stick 14 by pin 15, the lower end of control stick 14 is hinged with driving lever 19, one end of driving lever 19 enters among the pilot hole 6a after passing slotted eye 6b on the positioning seat 6, and tightly fits on the guide post 5 near among the hole 5b of lower end.
Fig. 3, Fig. 4, Fig. 5 and Fig. 6 illustrate in the pilot hole 6a of positioning seat 6 limited step 6d, this limited step 6d makes pilot hole 6a hypomere aperture greater than the epimere aperture, also be provided with the limited step 5a that matches with this limited step 6d on the guide post 5, be used for the maximum vertical penetration of restricted guidance bar 5.
Fig. 3 illustrates in the pilot hole 6a of guide post 5 belows and is provided with spring 7, and spring is provided with limited post 8 for 7 li.When guide post 5 rose, the elastic force of spring 7 can play booster action to the upper lifting force of driving lever 19, made operation easily; Can play cushioning effect again during decline.Limited post 8 had both carried out radially spacing to spring 7, its upper end is also carried out spacing to the extreme lower position on guide post 5 vertical direction.
Fig. 3 also illustrates between the pilot hole inwall of pressure head 1 and guide holder 3 and is provided with fairlead 2, and there is a circular orientation step 1a upper end of pressure head 1.Like this, only need the material and the accuracy of manufacture of fairlead 2 are controlled, just can guarantee the operating accuracy of pressure head 1.When piston pin has been press-fit into place and when also having overbottom pressure on the press, this overbottom pressure can be transferred to guide holder 3 by the circular orientation step 1a of pressure head 1 upper end, and further transfers on the base 11, thereby avoids because overvoltage causes the piston pin distortion.
Fig. 9, Figure 10 illustrate driving lever 19 is hinged on control stick 14 by slide block 18 lower end, the hinged end of slide block 18 is " U " v notch v structure, should be hinged on control stick 14 lower ends by pin 17 by " U " v notch v end, slide block 18 is provided with and is somebody's turn to do the slide opening 18a that " U " v notch v communicates, and an end of driving lever 19 is arranged in this slide opening 18a.When control stick 14 rotates around its pin joint, when slide block 18 drive driving levers 19 are lifted in vertical direction, driving lever 19 also will be done the slip of horizontal direction in the slide opening 18a of slide block 18, thereby avoids the pilot hole 6a inwall of driving lever 19 ends and positioning seat 6 to interfere.
Operation principle: during use, upwards spur handle 12, control stick 14 drives driving lever 19 by slide block 18 and produces to bottom offset, and the guide post 5 that driving lever 19 drives connect firmly with it moves downward and compresses spring 7 to position shown in Figure 1.Piston 23 (among Fig. 3 shown in the double dot dash line) is placed on the support bar 4, slowly pull down (or pushing away) fixed handle 12, guide post 5 is upwards inserted in the piston pin hole of piston 23 lower ends, again small end of connecting rod is put into piston, continue slowly to pull down (or pushing away) fixed handle 12, guide post 5 is moved on continuing and insert in the piston pin hole of small end of connecting rod, till limited step 6d on limited step 5a on guide post 5 and the positioning seat 6 among the pilot hole 6a contacted, at this moment the upper end of guide post 5 just was inserted into half height of small end of connecting rod piston pin hole.From the fairlead 2 at guide holder 3 tops, put into piston pin 24 (shown in Fig. 3 dotted line) then, because the piston pin hole on piston pin 24 and the piston 23 is a matched in clearance, so piston pin 24 will slip in the piston pin hole of piston 23 upper ends automatically, and drop on the upper surface of small end of connecting rod.From fairlead 2, put into pressure head 1, start press to pressing down pressure head 1, pressure is by piston pin 24, connecting rod and piston 23 are delivered on the support bar 4, because piston 23 is cast blank faces of non-processing with the contact-making surface of support bar 4, the perpendicularity of this contact-making surface and piston pin hole can not be guaranteed well, certainly will cause inhomogeneous contact the between piston pin 24 left and right sides and the support bar 4, a side support bar 4 of contact will move downward under the effect of pressure earlier, move on the support bar 4 by horizontal equilibrium bar 10 promotion opposite sides, till two support bars 4 are evenly stressed, guaranteed to be that the principle that benchmark is located is not damaged with the pin-and-hole.Press continues to press down, until the circular orientation step 1a of pressure head 1 upper end with till the upper surface of guide holder 3 contacts, at this moment piston pin 24 just just is press fit into the centre position of piston pin hole, and under the drive of guide post 5, control stick 14 also upwards is returned to position shown in Figure 1 automatically.The remaining pressure of press is directly delivered on the base 11 by guide holder 3, has avoided support bar 4 to bear excessive pressure and damage frock.The back press that is press-fit into place rises, and takes out pressure head 1, takes out to press-fit good piston rod, has just finished the whole work that press-fits.
Claims (7)
1, a kind of device that is used to press-fit engine gudgeon pin is characterized in that comprising base (11), guide holder (3), positioning seat (6), balance seat (9) and operating rod bearing (16), wherein:
A, guide holder (3) are fixedly mounted on the base (11), and its upper end plate is provided with pilot hole, and pressure head (1) is housed in the pilot hole;
B, balance seat (9) are fixedly mounted on the base (11), and be positioned at guide holder (3), on balance seat (9), be provided with two VE holes (9a) and a horizontal equilibrium hole (9b), the vertical and intersectant centerline in VE hole (9a) and horizontal equilibrium hole (9b), lining, horizontal equilibrium hole (9b) is provided with horizontal equilibrium bar (10), the longitudinal section of horizontal equilibrium bar (10) is an isosceles trapezoid, and its base is positioned at the below;
C, positioning seat (6) is fixedly mounted on the balance seat (9), which is provided with pilot hole (6a), this pilot hole (6a) is positioned under the pilot hole of guide holder (3), guide post (5) is equipped with in pilot hole (6a) lining, one side of positioning seat (6) has one section slotted eye (6b) that communicates with pilot hole (6a), the bilateral symmetry of pilot hole (6a) is provided with two balance pipes (6c), corresponding and big or small matching of position, two VE holes (9a) on two balance pipes (6c) and the balance seat (9), the two VE holes (9a) that enter respectively behind two balance pipes (6c) on the balance seat (9) are passed in the lower end of two support bars (4), and are suitable with the inclined-plane at described horizontal equilibrium bar (10) two ends respectively and contact;
D, operating rod bearing (16) are fixedly mounted on the base (11), and be positioned at the outside of guide holder (3), operating rod bearing (16) upper end is hinged with control stick (14), the lower end of control stick (14) is hinged with driving lever (19), and an end of driving lever (19) passes to enter in the pilot hole (6a) behind the slotted eye (6b) on the positioning seat (6) and links with guide post (5) lower end.
2, the device that is used to press-fit engine gudgeon pin according to claim 1, there is limited step (6d) pilot hole (6a) lining that it is characterized in that described positioning seat (6), this limited step (6d) makes pilot hole (6a) hypomere aperture greater than the epimere aperture, also is provided with the limited step (5a) that matches with this limited step (6d) on the guide post (5).
3, the device that is used to press-fit engine gudgeon pin according to claim 1 is characterized in that pilot hole (6a) lining of described guide post (5) below is provided with spring (7), and spring (7) lining is provided with limited post (8).
4, the device that is used to press-fit engine gudgeon pin according to claim 1 is characterized in that being provided with fairlead (2) between the pilot hole inwall of described pressure head (1) and guide holder (3).
5, the device that is used to press-fit engine gudgeon pin according to claim 1, it is characterized in that described driving lever (19) is hinged on the lower end of control stick (14) by slide block (18), the hinged end of slide block (18) is " U " v notch v structure, slide block (18) is provided with and is somebody's turn to do the slide opening (18a) that " U " v notch v communicates, and an end of driving lever (19) is arranged in this slide opening (18a).
6, the device that is used to press-fit engine gudgeon pin according to claim 1 is characterized in that there is a circular orientation step (1a) upper end of described pressure head (1).
7, the device that is used to press-fit engine gudgeon pin according to claim 1 is characterized in that the upper end of described control stick (14) is equipped with handle (12) by rivet (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100571244A CN100455412C (en) | 2005-06-16 | 2005-06-16 | Press-fitting tool for engine piston pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100571244A CN100455412C (en) | 2005-06-16 | 2005-06-16 | Press-fitting tool for engine piston pin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1699024A CN1699024A (en) | 2005-11-23 |
| CN100455412C true CN100455412C (en) | 2009-01-28 |
Family
ID=35475352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100571244A Expired - Fee Related CN100455412C (en) | 2005-06-16 | 2005-06-16 | Press-fitting tool for engine piston pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100455412C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100584540C (en) * | 2007-12-29 | 2010-01-27 | 力帆实业(集团)股份有限公司 | Engine pressing piston pin device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4050139A (en) * | 1976-06-22 | 1977-09-27 | Borroughs Tool & Equipment Corporation | Piston pin installing and removing apparatus |
| US4118852A (en) * | 1977-06-03 | 1978-10-10 | Schneider Peter F | Piston pin remover and installer |
| US4118851A (en) * | 1977-07-07 | 1978-10-10 | Martelaere David L De | Universal piston pin remover and installer |
| CN2084864U (en) * | 1991-02-01 | 1991-09-18 | 杨中祥 | Combined dismounting tools specially for internal-combusion engine piston set |
| US20040093728A1 (en) * | 2002-11-15 | 2004-05-20 | Hendricks George P. | Piston pin lock ring insertion tool and method |
| CN2815626Y (en) * | 2005-06-17 | 2006-09-13 | 重庆力帆实业（集团）有限公司 | Apparatus for press-mounting engine pistonpin |
-
2005
- 2005-06-16 CN CNB2005100571244A patent/CN100455412C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4050139A (en) * | 1976-06-22 | 1977-09-27 | Borroughs Tool & Equipment Corporation | Piston pin installing and removing apparatus |
| US4118852A (en) * | 1977-06-03 | 1978-10-10 | Schneider Peter F | Piston pin remover and installer |
| US4118851A (en) * | 1977-07-07 | 1978-10-10 | Martelaere David L De | Universal piston pin remover and installer |
| CN2084864U (en) * | 1991-02-01 | 1991-09-18 | 杨中祥 | Combined dismounting tools specially for internal-combusion engine piston set |
| US20040093728A1 (en) * | 2002-11-15 | 2004-05-20 | Hendricks George P. | Piston pin lock ring insertion tool and method |
| CN2815626Y (en) * | 2005-06-17 | 2006-09-13 | 重庆力帆实业（集团）有限公司 | Apparatus for press-mounting engine pistonpin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1699024A (en) | 2005-11-23 |
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Granted publication date: 20090128 Termination date: 20150616 |
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| EXPY | Termination of patent right or utility model |