CN203037193U - Piston pin hole roundness measurement fixture - Google Patents
Piston pin hole roundness measurement fixture Download PDFInfo
- Publication number
- CN203037193U CN203037193U CN 201220703285 CN201220703285U CN203037193U CN 203037193 U CN203037193 U CN 203037193U CN 201220703285 CN201220703285 CN 201220703285 CN 201220703285 U CN201220703285 U CN 201220703285U CN 203037193 U CN203037193 U CN 203037193U
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- China
- Prior art keywords
- piston
- pin hole
- anchor clamps
- roundness measurement
- piston pin
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a piston pin hole roundness measurement fixture, which comprises a base support fixed on a tester working table, a guide device fixed on the base support, a spotting spindle instrumented on the base support, two clamping devices which movably fit with the guide device, are positioned at two sides of the base support and are used for clamping outer circles at two sides of a piston, and an arresting device used for fixing the relative position of the clamping devices and the guide device. According to the piston pin hole roundness measurement fixture provided by the utility model, the base support is fixed on the tester working table; then, the spotting spindle is instrumented on the base support; pin holes of the piston are sleeved on the spotting spindle; the clamping devices are used to clamp the outer circles at two sides of the piston; the arresting device is used to fix the relative position of the clamping devices and the guide device; the spotting spindle is taken out; and roundness measurement is simultaneously carried out on the two pin holes of the piston. Thus, it is ensured that measurement centre lines of the two pin holes are one line, and the whole measurement accuracy and measurement efficiency are raised.
Description
Technical field
The utility model relates to the engine piston technical field, particularly a kind of piston pin hole roundness measurement anchor clamps.
Background technology
Piston is the requisite vital part of engine operate as normal, raising day by day along with engine fuel consumption, output power and rotating speed, the gaseous-pressure that piston bears and inertial force are more and more big, the load that piston pin hole bears is also increasing, the circularity of piston pin hole directly has influence on the motion of piston in cylinder sleeve of engine, therefore, in order to guarantee piston pin hole accurate circularity is arranged, need measure the circularity of piston pin hole.
At present, generally adopt the rotary roundness measuring instrument of worktable that the circularity of piston pin hole is measured, because measuring instrument is not equipped with special-purpose anchor clamps, piston is difficult to fixing at the worktable of measuring instrument, the existing piston anchor clamps, as shown in Figure 1, general vee-block 01 and axle 02 fixed piston of adopting, vee-block 01 is placed on the worktable of tester, axle 02 is inserted in the center fixation groove of vee-block 01, utilize the probe of tester that the rotation center that vee-block 01 is positioned at the tester worktable is also fixing, first pin-and-hole 031 with piston 03 is enclosed within on the axle 02 ordinatedly afterwards, and second pin-and-hole 032 carried out roundness measurement, after measurement finishes, piston 03 is taken off from axle 02, and second pin-and-hole 032 of this piston 03 is enclosed within on the axle 02, and first pin-and-hole 031 is carried out roundness measurement.
Above-mentioned piston anchor clamps in use, need by axle 02 piston 03 to be fixed on the vee-block 01, prevent that piston 03 from producing play because of the worktable rotation in measuring process, therefore in whole test process, axle 02 can not be taken off, piston 03 once is installed and can only measures the circularity of a pin-and-hole, therefore same piston 03 need be installed for twice and measure different pin-and-holes, though can measure the circularity of two pin-and-holes respectively, but, the measuring center line that may cause pin-and-hole that is installed for twice is offset, the measuring accuracy that influence is whole, and be installed for twice and influenced measurement efficient.
In sum, how guaranteeing that the measuring center line of two pin-and-holes of same piston is not offset, improve whole measuring accuracy and measure efficient, is those skilled in the art's problem demanding prompt solutions.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of piston pin hole roundness measurement anchor clamps, is not offset with the measuring center line of two pin-and-holes that guarantee same piston, improves whole measuring accuracy and measures efficient.
For achieving the above object, the utility model provides following technical scheme:
A kind of piston pin hole roundness measurement anchor clamps comprise:
Be fixed on the base support on the tester work top;
Be fixed on the guide piece on the described base support;
Can perpendicular to described tester work top be inserted into locator mandrel on the described base support;
Move with described guide piece and to cooperate, and be positioned at two clamp devices that described base support both sides are used for clamping piston both sides cylindrical;
The stop motion mechanism that is used for relative position between fixing described clamp device and the described guide piece.
Preferably, above-mentioned piston pin hole roundness measurement is with in the anchor clamps, and described base support comprises base body and contiguous block;
The bottom surface of described base body is circular face, and is fixed on the described tester work top by screw;
Described contiguous block is fixed on the described base body by screw.
Preferably, above-mentioned piston pin hole roundness measurement is with in the anchor clamps, and the length of described locator mandrel is more than or equal to the diameter of piston.
Preferably, above-mentioned piston pin hole roundness measurement is with in the anchor clamps, and described guide piece is guide pillar; Offer the through hole of horizontal direction on the described contiguous block, described guide pillar is interspersed to be fixed in the described through hole.
Preferably, above-mentioned piston pin hole roundness measurement is with in the anchor clamps, and described clamp device comprises that slide block, steel ball keep circle and clamp;
Described slide block is provided with slot, and described clamp is inserted in the described slot;
Described steel ball keeps circle to be flush-mounted in the described slide block, and cooperates with described guide pillar rolling;
The clamping surface of described clamp is vertical with described tester work top, and the height of described clamp is greater than the radius of piston.
Preferably, above-mentioned piston pin hole roundness measurement is with in the anchor clamps, and the number of described guide pillar is two.
Preferably, above-mentioned piston pin hole roundness measurement is with in the anchor clamps, and described stop motion mechanism comprises long bolt and star knob nut;
Described long bolt flatly runs through and is fixed on the described contiguous block;
Described slide block can be set on the described long bolt with relatively moving;
Described star knob nut cooperation is installed in and is used for holding out against described slide block on the described long bolt.
Preferably, above-mentioned piston pin hole roundness measurement is with in the anchor clamps, and the number of the slot on each described slide block is at least two.
Preferably, above-mentioned piston pin hole roundness measurement is with in the anchor clamps, and the material of described clamp is duroplasts.
Preferably, above-mentioned piston pin hole roundness measurement has engraved structure with in the anchor clamps on the described slide block.
Compared with prior art, the beneficial effects of the utility model are:
The piston pin hole roundness measurement anchor clamps that the utility model provides, when measuring the circularity of pin-and-hole, earlier base support is fixed on the tester worktable, afterwards with locator mandrel perpendicular to the tester work top be inserted on the base support, the pin-and-hole of piston is enclosed within on the locator mandrel, two clamp devices on the mobile guide device again, the both sides cylindrical of clamping piston, and with stop motion mechanism with clamp device and guide piece relative fixed, take out locator mandrel at last, just can carry out roundness measurement simultaneously to two pin-and-holes on the piston, only need be installed once, the measuring center line that has guaranteed two pin-and-holes is a line, has improved the precision of whole measurement, has also improved the efficient of measuring simultaneously.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or scheme of the prior art, to do simple the introduction to the accompanying drawing of describing required use in embodiment or the prior art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those skilled in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
A kind of piston pin hole roundness measurement that Fig. 1 provides for prior art structural representation of anchor clamps;
A kind of piston pin hole roundness measurement that Fig. 2 provides for the utility model embodiment structural representation of anchor clamps;
Fig. 3 is the vertical view of Fig. 2;
A kind of piston pin hole roundness measurement that Fig. 4 provides for the utility model embodiment structural representation of the contiguous block of anchor clamps;
Fig. 5 is the A-A cross-sectional view of Fig. 4;
A kind of piston pin hole roundness measurement that Fig. 6 provides for the utility model embodiment locator mandrel structural representation of anchor clamps;
A kind of piston pin hole roundness measurement that Fig. 7 provides for the utility model embodiment slide block structure synoptic diagram of anchor clamps;
Fig. 8 is the B-B cross-sectional view of Fig. 7;
A kind of piston pin hole roundness measurement that Fig. 9 the utility model embodiment provides base main body structure synoptic diagram of anchor clamps;
Figure 10 is the C-C cross-sectional view of Fig. 9.
Among above-mentioned Fig. 1-Figure 10:
Vee-block 01, axle 02, piston 03, first pin-and-hole 031, second pin-and-hole 032;
Embodiment
The utility model provides a kind of piston pin hole roundness measurement anchor clamps, has guaranteed that the measuring center line of two pin-and-holes of same piston is not offset, and improves whole measuring accuracy and measures efficient.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiment.Based on embodiment of the present utility model, all other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work belong to the scope that the utility model is protected.
Please refer to Fig. 2-Figure 10, a kind of piston pin hole roundness measurement that Fig. 2 provides for the utility model embodiment structural representation of anchor clamps; Fig. 3 is the vertical view of Fig. 2; A kind of piston pin hole roundness measurement that Fig. 4 provides for the utility model embodiment structural representation of the contiguous block of anchor clamps; Fig. 5 is the A-A cross-sectional view of Fig. 4; A kind of piston pin hole roundness measurement that Fig. 6 provides for the utility model embodiment locator mandrel structural representation of anchor clamps; A kind of piston pin hole roundness measurement that Fig. 7 provides for the utility model embodiment slide block structure synoptic diagram of anchor clamps; Fig. 8 is the B-B cross-sectional view of Fig. 7; A kind of piston pin hole roundness measurement that Fig. 9 the utility model embodiment provides base main body structure synoptic diagram of anchor clamps; Figure 10 is the C-C cross-sectional view of Fig. 9.
The piston pin hole roundness measurement anchor clamps that the utility model embodiment provides comprise base support 11, clamp device 12, guide piece 13, locator mandrel 14 and stop motion mechanism 16; Wherein, the bottom surface of base support 11 and tester work top are fixed; Guide piece 13 is fixed on the base support 11; Has the structure that cooperates with guide piece 13 on the clamp device 12, clamp device 12 can be mobile at guide piece 13, and clamp device 12 has two, lays respectively at the both sides of base support 11, be used for clamping piston 15 both sides cylindricals, piston 15 is fixed on the base support 11; Before measuring, locator mandrel 14 is inserted in the fixed orifice of base support 11, guarantees that the axis of locator mandrel 14 is vertical with the tester work top; Stop motion mechanism 16 is used for the relative position of fixed clamping device 12 and guide piece 13, makes clamp device 12 be in the position of clamping piston 15 when measuring always.
Above-mentioned piston pin hole roundness measurement with the course of work of anchor clamps is: before pin-and-hole 151 roundness measurements of carrying out piston 15, earlier base support 11 is placed on the tester work top, diameter according to the pin-and-hole 151 of piston to be measured 15, select supporting with it locator mandrel 14, and this locator mandrel 14 is inserted in the center fixation hole of base support 11, utilize the probe of tester locator mandrel 14 and base support 11 to be positioned at the rotation center position of tester worktable, afterwards, base support 11 is fixed on the work top of tester.Next, the pin-and-hole 151 of piston to be measured 15 is enclosed within on the locator mandrel 14, afterwards, the clamp device 12 of movable base support 11 both sides, clamp device 12 is mobile at guide piece 13, clamping part up to the clamp device 12 of both sides is against on the cylindrical of piston 15, at this moment, utilize the relative position of stop motion mechanism 16 fixed clamping devices 12 and guide piece 13, after fixing, piston 15 just has been fixed on the base support 11, locator mandrel 14 is taken out from pin-and-hole 151, piston 15 still can be fixed on the base support 11, and last, the use test instrument carries out roundness measurement simultaneously to two pin-and-holes 151 on the piston 15, thereby guaranteed the coincidence of the measuring center line of two pin-and-holes 151, improve overall measurement accuracy, and only needed piston 15 is installed once, improved the efficient of measuring.
Above-mentioned piston pin hole roundness measurement is optimized with anchor clamps, and base support 11 separated into two parts comprise base body 111 and contiguous block 112; Wherein, the bottom surface of base body 111 is designed to circular face, certainly, can also be other shape; Base body 111 is fixed on the tester work top by screw, is easy for installation and removal; Contiguous block 112 is fixed on the base body 111 by screw, and the main effect of contiguous block 112 is fixed pistons 15 and provides support for guide piece 13 etc.; Be processing for convenience with base support 11 purposes divided into two parts and install that certainly, base support 11 also can be integrative-structure.
Further optimize, the length of locator mandrel 14 is more than or equal to the diameter of piston 15, purpose is: when the pin-and-hole 151 of piston 15 was enclosed within on the locator mandrel 14, locator mandrel 14 can cooperate suit with two pin-and-holes 151 simultaneously, and the measuring center line of two pin-and-holes 151 is overlapped before measurement better; Certainly, cooperate suit with two pin-and-holes 151 simultaneously as long as satisfy locator mandrel 14, the length of locator mandrel 14 can be adjusted according to piston 15 diameters; Above-mentioned just preferred version in fact, even only cooperate suit with a pin-and-hole 151, also can guarantee the measuring center line of two pin-and-holes 151 point-blank.
For above-mentioned guide piece 13, if adopt guide pillar, then clamp device 12 comprises that slide block 123, steel ball keep circle 122 and clamp 121; Offer slot 124 on the slide block 123, clamp 121 plug-in mountings are fixed in the slot 124; It is standard component that steel ball keeps circle 122, selects the steel ball of respective model to keep circle 122 according to the diameter of guide pillar, keeps circle 122 setting-ins to be fixed in the through hole of slide block 123 steel ball, and is sleeved on the guide pillar, and rolling with guide pillar cooperates; Because two slide blocks 123 that are two clamp devices 12 of contiguous block 112 both sides keep circle 122 to realize relatively moving with guide pillar by steel ball, therefore deserving to be called and stating structure is two floating clamp structures, again since the difference of the through hole radius of slide block 123 and guide pillar radius less than steel ball size, be to be interference fit between steel ball and guide pillar and the through hole, the quality of fit height, so such cooperation makes that the gap between guide pillar and the through hole is little, limited the degree of freedom of slide block 123 along the guide pillar radial direction well, rocking of circumferencial direction can not take place in slide block 123 in slip, it is more steady to slide, and force of rolling friction is little, slide flexibly; The clamping surface of above-mentioned clamp 121 is vertical with the tester work top, and the height of clamp 121 is greater than the radius of piston, vertical purpose be for the application of force direction of the stressed along continuous straight runs that makes piston 15 and two clamps 121 using in pairs point-blank, guaranteed the fastness that piston 15 is fixing; Certainly, as long as the clamping surface of two clamps 121 that use is parallel in pairs, can reach the clamping effect of application of force direction conllinear equally, so clamping surface can also favour the tester work top; The height of clamp 121 is higher than the radius of piston 15 just for piston 15 being clamped, if insufficient height may can't clip, when worktable rotated, piston 15 can be loosening.
If what guide piece 13 adopted is slide rail, then cooperate the part of movement with slide rail be the draw-in groove structure to clamp device 12; If what guide piece 13 adopted is chute, then cooperate the part of movement with chute be road wheel or slide rail to clamp device 12; The structure of every locomotive function of can realizing leading all belongs to the novel protection domain of this use.
For guide pillar, to slide steadily in order to make slide block 123, the number of guide pillar adopts two, can also be three etc.; If the employing slide rail cooperates with draw-in groove, then a slide rail also can be realized smooth sliding, and certainly, a plurality of slide rails can use equally.
The stop motion mechanism 16 that the utility model embodiment provides comprises long bolt 161 and star knob nut 162; Wherein, long bolt 161 flatly runs through and is fixed on the contiguous block 112, and slide block 123 is set on the long bolt 161, and slide block 123 can relatively move at long bolt 161; At the two ends of long bolt 161 two star knob nuts 162 that cooperate with it are installed, star knob nut 162 can precession on long bolt 161, revolve and move back, when clamp device 12 arrives at the position of fixed piston 15, star knob nut 162 precessions respectively with two ends, up to pushing against with slide block 123, expression star knob nut 162 is with clamp device 12 fix in position, and then piston 15 is fixed on the base support 11; Except can adopting above-mentioned stop motion mechanism 16; can also directly offer threaded hole at slide block 123; when slide block 123 arrives the fixed position; use screw or bolt that slide block 123 is tightened on guide pillar, slide rail or the chute; the stop motion mechanism 16 of other form; as long as can realize locking function, all in protection domain of the present utility model.
As optimization, cylinder diameter scope according to different pistons 15, offer at least two slots 124 at each slide block 123, being positioned at two slots 124 that use in pairs on two slide blocks 123 of contiguous block 112 both sides is one group, then the utility model embodiment provides at least two group slots 124, according to different cylinder diameters, select a group slot 124 of corresponding spacing during use, clamp 121 is inserted on this group slot 124.
Further optimize clamp 121, its material adopts duroplasts, purpose be for weaken piston 15 in clamping process with the collision of clamp 121, certainly, can also adopt the softer materials of the relative metal of quality such as rubberite.
In order to alleviate the weight of slide block 123, it is more flexible that slide block 123 is slided, and slide block 123 adopts engraved structure, under the prerequisite that does not influence its slip, alleviates its weight as far as possible.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments herein.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. piston pin hole roundness measurement anchor clamps is characterized in that, comprising:
Be fixed on the base support (11) on the tester work top;
Be fixed on the guide piece (13) on the described base support (11);
Can perpendicular to described tester work top be inserted into locator mandrel (14) on the described base support (11);
Cooperate with described guide piece (13) is mobile, and be positioned at two clamp devices (12) that described base support (11) both sides are used for clamping piston (15) both sides cylindrical;
The stop motion mechanism (16) that is used for relative position between fixing described clamp device (12) and the described guide piece (13).
2. according to the described piston pin hole roundness measurement of claim 1 anchor clamps, it is characterized in that described base support (11) comprises base body (111) and contiguous block (112);
The bottom surface of described base body (111) is circular face, and is fixed on the described tester work top by screw;
Described contiguous block (112) is fixed on the described base body (111) by screw.
3. according to the described piston pin hole roundness measurement of claim 1 anchor clamps, it is characterized in that the length of described locator mandrel (14) is more than or equal to the diameter of piston (15).
4. according to the described piston pin hole roundness measurement of claim 2 anchor clamps, it is characterized in that described guide piece (13) is guide pillar; Offer the through hole of horizontal direction on the described contiguous block (112), described guide pillar is interspersed to be fixed in the described through hole.
5. according to the described piston pin hole roundness measurement of claim 4 anchor clamps, it is characterized in that described clamp device (12) comprises that slide block (123), steel ball keep circle (122) and clamp (121);
Described slide block (123) is provided with slot (124), and described clamp (121) is inserted in the described slot (124);
Described steel ball keeps circle (122) to be flush-mounted in the described slide block (123), and cooperates with described guide pillar rolling;
The clamping surface of described clamp (121) is vertical with described tester work top, and the height of described clamp (121) is greater than the radius of piston (15).
6. according to the described piston pin hole roundness measurement of claim 5 anchor clamps, it is characterized in that the number of described guide pillar is two.
7. according to the described piston pin hole roundness measurement of claim 6 anchor clamps, it is characterized in that described stop motion mechanism (16) comprises long bolt (161) and star knob nut (162);
Described long bolt (161) flatly runs through and is fixed on the described contiguous block (112);
Described slide block (123) can be set on the described long bolt (161) with relatively moving;
Described star knob nut (162) cooperation is installed in described long bolt (161) and goes up for holding out against described slide block (123).
8. according to the described piston pin hole roundness measurement of claim 5 anchor clamps, it is characterized in that the number of the slot (124) on each described slide block (123) is at least two.
9. according to the described piston pin hole roundness measurement of claim 5 anchor clamps, it is characterized in that the material of described clamp (121) is duroplasts.
10. according to the described piston pin hole roundness measurement of claim 5 anchor clamps, it is characterized in that described slide block has engraved structure on (123).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220703285 CN203037193U (en) | 2012-12-18 | 2012-12-18 | Piston pin hole roundness measurement fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220703285 CN203037193U (en) | 2012-12-18 | 2012-12-18 | Piston pin hole roundness measurement fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203037193U true CN203037193U (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220703285 Expired - Fee Related CN203037193U (en) | 2012-12-18 | 2012-12-18 | Piston pin hole roundness measurement fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203037193U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112871717A (en) * | 2021-03-24 | 2021-06-01 | 长春理工大学 | High-precision steel ball diameter sorting device and method |
| CN113386068A (en) * | 2021-07-30 | 2021-09-14 | 苏州中科行智智能科技有限公司 | Positioning and clamping mechanism for visual detection of piston hole |
-
2012
- 2012-12-18 CN CN 201220703285 patent/CN203037193U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112871717A (en) * | 2021-03-24 | 2021-06-01 | 长春理工大学 | High-precision steel ball diameter sorting device and method |
| CN113386068A (en) * | 2021-07-30 | 2021-09-14 | 苏州中科行智智能科技有限公司 | Positioning and clamping mechanism for visual detection of piston hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20181218 |