CN207873732U - Positioning fixture for the vertical station processing of crosshead pin - Google Patents
Positioning fixture for the vertical station processing of crosshead pin Download PDFInfo
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- CN207873732U CN207873732U CN201721881392.2U CN201721881392U CN207873732U CN 207873732 U CN207873732 U CN 207873732U CN 201721881392 U CN201721881392 U CN 201721881392U CN 207873732 U CN207873732 U CN 207873732U
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Abstract
A kind of positioning fixture for the vertical station processing of crosshead pin is installed on the workbench of lathe, it is characterised in that：The positioning fixture includes the oil cylinder for clamping workpiece, to support the pushing holder of the oil cylinder, to carry out the positioning pin of coarse localization to workpiece, to carry out pinpoint three-jaw detent mechanism to workpiece and the 4th axis to drive workpiece to rotate, the pushing holder is fixed on the workbench, the oil cylinder is fixed on the top of the pushing holder, 4th axis is fixed on the workbench below the oil cylinder, the positioning pin is set at the rotation center of the 4th axis, the three-jaw detent mechanism is arranged radially centered on the positioning pin on the 4th axis.The utility model reduces the clamping times of workpiece, keep workpiece centre positioning more accurate, also avoid the workpiece interference that main shaft is generated with pressing plate in the process of the hole of different angle position, reduce unnecessary non-cutting time, the labor intensity that worker is reduced while ensureing product quality, improves production efficiency.
Description
Technical field
It is the utility model is related to the processing to diesel engine part, more particularly to a kind of for the vertical station processing of crosshead pin
Positioning fixture, belong to diesel engine manufacturing technology field.
Background technology
Marine low speed diesel engine crosshead pin belongs to moving component, is a kind of typical column type structure.Outside the part
Simple in structure, internal holes are more, and processing difficulties are mainly reflected in the processing of outer circle face system, and hole system includes large diameter, deep borehole again
With perforation cross bore, each hole all processes on horizontal boring machine in outer circle at present.The outer circle of crosshead pin is processed on boring machine
When upper each hole, crosshead pin workpiece is in state is stood up, i.e. workpiece is in vertical station, and end face is parallel with workbench.Due to existing
Have that bed dimension is bigger than normal for excircle of workpiece diameter, if workpiece to be placed on to the centre of gyration position of workbench, plus
Main shaft can stretch out longer during work, and rigidity is bad, and processing operating mode is more severe, and bad shadow can be caused to lathe and cutter
It rings, while also influencing whether the quality of product.But if workpiece is not placed on the centre of gyration of workbench when processing, this is remote in processing
From when partial hole, may result in main shaft in the outer circle of main shaft apart from workpiece farther out, it can not directly process, need to lift workpiece
Rotation angle is tuned up so as to cause clamping again to Working position again, can waste many times, and workpiece lift after can make
At position offset, resets zero-bit and coordinate system is called to be also possible to malfunction.In addition, in partial hole on processing excircles,
After worktable rotary to position to be processed, main shaft can generate interference with pressing plate, to need to dismount pressing plate, replace clamping position,
Many inconvenience are caused to processing, not only labor intensity increases but also inefficiency.
Utility model content
The purpose of this utility model is to provide a kind of positioning fixture for the vertical station processing of crosshead pin, makes cross
Head pin can complete all processing contents on vertical station by clamped one time tune-up, avoid repeatedly filling in process
It presss from both sides tune-up and main shaft and generates interference with pressing plate, to reduce the non-cutting times such as clamping tune-up, raising production efficiency reduces worker's labour
Intensity.
Technical solution adopted by the utility model to solve its technical problems is：
A kind of positioning fixture for the vertical station processing of crosshead pin is installed on the workbench of lathe, feature exists
In：The positioning fixture includes the oil cylinder for clamping workpiece, the pushing holder to support the oil cylinder, being carried out to workpiece
The positioning pin of coarse localization, to workpiece carry out pinpoint three-jaw detent mechanism and to drive workpiece rotate the 4th
Axis, the pushing holder are fixed on the workbench, and the oil cylinder is fixed on the top of the pushing holder, and the 4th axis is solid
It is scheduled on the workbench below the oil cylinder, the positioning pin is set at the rotation center of the 4th axis, the three-jaw positioning
Mechanism is arranged radially centered on the positioning pin on the 4th axis.
Further, the positioning fixture further includes having to workpiece tune up the adjustable cushion block of centering, this can
Cushion block is adjusted to be set to the upper surface of described 4th axis.
Further, the three-jaw detent mechanism is arranged for circumference equal dividing.
The utility model has the beneficial effects that：The clamping times for reducing workpiece keep workpiece centre positioning more accurate, also
The workpiece interference that main shaft is generated with pressing plate in the process of the hole of different angle position is avoided, when reducing unnecessary auxiliary
Between, the labor intensity of worker is reduced while ensureing product quality, improves production efficiency.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the 3 D stereo schematic diagram of the utility model.
Fig. 3 is the scheme of installation of positioning pin and three-jaw detent mechanism on the 4th axis.
Fig. 4 is the installation diagram of the utility model on the table.
Fig. 5 is the vertical view of Fig. 4.
In figure：
1-oil cylinder, 2-pushing holders, 3-workpiece, 4-adjustable cushion blocks, 5-positioning pins, 6-three-jaw detent mechanisms, 7-
4th axis, 8-workbench.
Specific implementation mode：
The utility model is described in further detail with reference to the accompanying drawings and examples.
As depicted in figs. 1 and 2, the positioning fixture for the vertical station processing of crosshead pin is installed on the work of lathe
On platform, crosshead pin workpiece 3 is processed, which includes the oil cylinder 1 for clamping workpiece, to support cylinder 1
The pushing holder 2, positioning pin 5 to carry out coarse localization to workpiece 3, fixed to carry out pinpoint three-jaw to workpiece 3
Position mechanism 6, to drive workpiece 3 rotate the 4th axis 7 and to workpiece carry out tune up centering adjustable cushion block 4.
The pushing holder 2 on workbench 8, plays a supporting role to oil cylinder 1 by screw fixation lathe；Hydraulic pressure drives
Dynamic oil cylinder 1 is fixed on the top of the pushing holder 2, and is clamped to workpiece 3 by the pushing holder 2；4th axis 7
For rotating mechanism, it is fixed on the workbench 8 of 1 lower section of oil cylinder.
Referring to Fig. 3, the positioning pin 5 and three-jaw detent mechanism 6 are mounted on the 4th axis 7, wherein positioning pin 5 is arranged
At the rotation center of the 4th axis 7, the centre bore of workpiece 3 is passed through to be used for carrying out coarse localization to it；The three-jaw is fixed
Position mechanism 6 is set on the 4th axis 7 to radial circumference equal dividing centered on the positioning pin 5, the three-jaw detent mechanism 6
It come the small end outer circle of the clamping workpiece 3 and is accurately positioned by oil pressure actuated three-jaw.
The adjustable cushion block 4 is mounted on the 4th axis 7, is located at below the workpiece 3, to carry out school to the workpiece 3
Adjust centering.
360 ° of arbitrary rotations that the utility model realizes workpiece 3 by the 4th axis 7, to reduce clamping times, avoid
When processing different hole positions, main shaft is interfered with caused by pressing plate；In addition, in clamping process, it can be described adjustable by adjusting
The height of cushion block 4 to workpiece 3 carries out tune-up centering.
As shown in Figure 4 and Figure 5, the operation of the utility model is as follows：Positioning pin 5 with 3 centre bore of workpiece by connecting to work
Part 3 carries out coarse localization, then is accurately positioned to 3 center of workpiece by oil pressure actuated three-jaw detent mechanism 6, can by adjusting
The height of cushion block 4 is adjusted to carry out tune-up centering to workpiece 3.
The utility model improves processing operating mode, avoids the interference phenomenon of main shaft and pressing plate when processing different hole positions,
Reduce pressing plate dismounting number, improves production efficiency, reduce the labor intensity of worker to a certain extent, also reduce work
The probability of people's error in operation, while reducing lifting workpiece replacing Working position unproductive time used in clamping again again, it reduces
Process costs.
The embodiment is not used for limiting the scope of the utility model, and the protection domain of the requires of the utility model not only limits
In above-mentioned case study on implementation, also the utility model should obviously be converted including other and alternative solution, it is all according to this practicality
The equivalence changes and modification that novel content is made, belong to the scope of the utility model.
Claims (3)
1. a kind of positioning fixture for the vertical station processing of crosshead pin is installed on the workbench of lathe, it is characterised in that：
The positioning fixture includes the oil cylinder for clamping workpiece, the pushing holder to support the oil cylinder, to thick to workpiece progress
The positioning pin that slightly positions, to workpiece carry out pinpoint three-jaw detent mechanism and to drive that workpiece rotates the 4th
Axis, the pushing holder are fixed on the workbench, and the oil cylinder is fixed on the top of the pushing holder, and the 4th axis is solid
It is scheduled on the workbench below the oil cylinder, the positioning pin is set at the rotation center of the 4th axis, the three-jaw positioning
Mechanism is arranged radially centered on the positioning pin on the 4th axis.
2. the positioning fixture according to claim 1 for the vertical station processing of crosshead pin, it is characterised in that：Described
Positioning fixture further includes having to workpiece tune up the adjustable cushion block of centering, this is adjustable, and cushion block is set to the 4th axis
Above.
3. the positioning fixture according to claim 1 for the vertical station processing of crosshead pin, it is characterised in that：Described
Three-jaw detent mechanism is arranged for circumference equal dividing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721881392.2U CN207873732U (en) | 2017-12-28 | 2017-12-28 | Positioning fixture for the vertical station processing of crosshead pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721881392.2U CN207873732U (en) | 2017-12-28 | 2017-12-28 | Positioning fixture for the vertical station processing of crosshead pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207873732U true CN207873732U (en) | 2018-09-18 |
Family
ID=63504731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721881392.2U Active CN207873732U (en) | 2017-12-28 | 2017-12-28 | Positioning fixture for the vertical station processing of crosshead pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207873732U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449953A (en) * | 2019-09-06 | 2019-11-15 | 长春市吉通伟业汽车底盘零部件有限责任公司 | A kind of self-centering type hydraulically operated fixture for automotive hub processing |
-
2017
- 2017-12-28 CN CN201721881392.2U patent/CN207873732U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449953A (en) * | 2019-09-06 | 2019-11-15 | 长春市吉通伟业汽车底盘零部件有限责任公司 | A kind of self-centering type hydraulically operated fixture for automotive hub processing |
| CN110449953B (en) * | 2019-09-06 | 2024-05-10 | 长春市吉通伟业汽车底盘零部件有限责任公司 | Self-centering hydraulic clamp for machining automobile hubs |
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