Unlock instant, AI-driven research and patent intelligence for your innovation.

Drill jig tooling for gear-shifting cam of engine

A technology for engines and jigs, which is applied to the jigs used for workpieces, positioning devices, manufacturing tools, etc., can solve problems such as poor positioning accuracy, depth tolerances that cannot meet the requirements, and poor limit accuracy, achieving ingenious design, The structure is simple and the effect of solving the precision problem of the drilling jig

Inactive Publication Date: 2013-09-11
力帆科技(集团)股份有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the shift indicator pin hole drill sleeve 4 is slender and stretches out more than one time of the drill body 1, the positioning accuracy is poor, and the position tolerance cannot reach; The bit accuracy is poor, resulting in the depth tolerance of the shift indicator pin hole 7a of the shift cam 7 and the shift wheel positioning pin hole 7b failing to meet the requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Drill jig tooling for gear-shifting cam of engine
  • Drill jig tooling for gear-shifting cam of engine
  • Drill jig tooling for gear-shifting cam of engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0018] Figure 4 The engine shift cam drilling jig tooling shown is composed of a jig body 1, a sliding positioning tip 2, a pressing positioning tip 3, a gear shift indicator pin hole drill sleeve 4, a gear shift wheel positioning pin hole drill sleeve 5, and a movable clamping block 8 Form with set screw cover 9.

[0019] A left support frame 1a extends upward from the left end of the drill template body 1, and a right support frame 1b extends upward from the right end. The pressing positioning top 3 and the gear shift indicating pin hole drill sleeve 4 are arranged on the left support frame 1a, and there are threaded holes for installing the pressing positioning top 3 and the gear shift indicating pin hole drill sleeve 4 on the left support frame 1a. The round hole, the counterbore hole 1c for the left end of the shift cam 7 to extend into, the counterbo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a drill jig tooling for a gear-shifting cam of an engine. The left end of the gear-shifting cam extends into a cushion cap hole of a left support of the drill jig and is clamped by a clamping positioning center screwed into the left support. The right end of the gear-shifting cam is clamped by a sliding positioning center inserted in a right support. A movable block is sleeved on the sliding positioning center between the gear-shifting cam and the right support. A positioning screw cap horizontally screwed into the right support from the right is in surface contact with the right end face of the sliding positioning center to realize limitation. The sliding positioning center, the clamping positioning center, the cushion cap hole and the gear-shifting cam are disposed coaxially. By the structure, length of drill sleeve of a gear-shifting denotation pin hole is shortened, and drilling precision of the gear-shifting denotation pin hole is guaranteed. The sliding positioning center is in surface contact with the positioning screw cap, limitation precision is high, and depth tolerance between the gear-shifting denotation pin hole of the gear-shifting cam and a positioning pin hole of the gear-shifting cam.

Description

technical field [0001] The invention relates to motorcycle processing tooling, in particular to a drilling jig tooling for gear shifting cams of engines. Background technique [0002] Such as figure 1 , 2 , 3, the left side of the engine shift cam 7 needs to drill and twist 5 shift indicator pin holes 7a, and the right side needs to drill and twist 1 shift wheel positioning pin hole 7b, in order to ensure that the shift cam 7 is accurately positioned in the engine. The gear shifting function requires that the drilling holes on both sides have strict position tolerance and depth tolerance requirements. To meet these requirements, generally large-scale enterprises with good conditions and mass-produced shift cams use special machines to ensure that; for small-scale enterprises with limited conditions or shift cams produced in small batches, special drilling jigs are usually used to process them on a drilling machine. To meet the product requirements, only higher requirement...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23B47/28B23Q3/00
Inventor 田亚平
Owner 力帆科技(集团)股份有限公司