Clamp used in processing of large end hole and small end hole in connecting rod
A technology of large and small heads and connecting rods, used in manufacturing tools, metal processing equipment, metal processing mechanical parts, etc., can solve the problems of labor and time-consuming, troublesome clamping, secondary damage of connecting rods, etc., and achieve accurate positioning and clamping. The effect of convenience and avoidance of matching errors
Inactive Publication Date: 2016-05-04
孙德春
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Problems solved by technology
[0002] We know that there are many kinds of fixtures and positioning datums used when machining the big and small head holes of the engine connecting rod. It is more common to use the small head hole as the positioning datum to process the connecting rod. However, the small head hole of the connecting rod and the positioning mandrel It is easy to produce matching errors between them, which seriously affects the center distance of the connecting rod and the position of the big and small head holes.
At the same time, this method is cumbersome to clamp, labor-intensive and time-consuming, and it is easy to cause secondary damage to the connecting rod
Method used
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Embodiment Construction
[0009] The present invention will be further described below in conjunction with accompanying drawing:
[0010] Such as figure 1 , figure 2 As shown, the present invention relates to a jig for processing the large and small head holes of connecting rods. Bolt 7, connecting rod 8, right-angle positioning block 2 is fixed on the perforated tire plate 1 with fastening screws 4, plane positioning block 3 is fixed on the perforated tire plate 1 with fastening bolts 4, and the positioning screw 5 is screwed into the right-angled positioning The block 2 and the plane positioning block 3 are respectively in contact with the positioning point of the small end of the connecting rod and the surface of the connecting rod bolt. The adjustment nut 6 is screwed into the right-angle positioning block 2, and the engine connecting rod 8 is fixed and compressed with the compression bolt 7.
[0011] When the present invention is used, the operator can adjust the length of the positioning bolt...
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The invention relates to a clamp used in processing of a large end hole and a small end hole in a connecting rod. The clamp comprises a right-angle positioning block, a flat surface positioning block, fastening screws, positioning screws, an adjusting nut, a compression bolt and the like, wherein the right-angle positioning block and the flat surface positioning block are fixed to a bed mould with holes through the fastening screws; the positioning screws are in contact with a connecting rod small end positioning point and a connecting rod large end bolt surface through the right-angle positioning block and the flat surface positioning block respectively; the adjusting screw is also arranged on the right-angle positioning block, and corresponds to a small end of the connecting rod leftwards; the compression bolt is fixed to the bed mould with the holes, and corresponds to a large end of the connecting rod. A positioning reference is transferred to two positioning points from a small end, so that fit clearance errors can be avoided, and the change of the small end hole cannot affect the center distance of the connecting rod and the position tolerance between a large hole and a small hole of the connecting rod; the clamp has the characteristics of being simple in structure, convenient to use, and capable of saving time and labor.
Description
technical field [0001] The invention relates to the field of engine connecting rod processing, in particular to a fixture for processing connecting rod big and small head holes. Background technique [0002] We know that there are many kinds of fixtures and positioning datums used when machining the big and small head holes of the engine connecting rod. It is more common to use the small head hole as the positioning datum to process the connecting rod. However, the small head hole of the connecting rod and the positioning mandrel It is easy to produce matching errors between them, which seriously affects the center distance of the connecting rod and the position of the big and small head holes. At the same time, this method is cumbersome to clamp, labor-intensive and time-consuming, and it is easy to cause secondary damage to the connecting rod. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the shortcomings o...
Claims
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IPC IPC(8): B23Q3/06
CPCB23Q3/062
Inventor 孙德春
Owner 孙德春