2, Yunnan Province 20 16 college entrance examination mechanical professional skills assessment outline.

First, the nature of the examination.

According to the 20 16 (consulting) reform plan for the entrance examination for graduates of higher vocational and technical education in Yunnan province, higher vocational colleges in Yunnan province will recruit graduates from secondary vocational schools (including secondary vocational schools, vocational high schools and technical schools) in 20 16, and the assessment of mechanical professional skills is related to mechanical engineering in secondary vocational schools.

Second, the assessment basis and requirements

Evaluation basis

1, national occupational standard:

(1) Turner (occupation code: 6-04-01-0/)

(2) Milling workers (occupation code: 6-04-0 1-02)

(3) Fitter (occupation code: 6-05-02-02)

(4) CNC lathe operator (occupation code: 6-04-01-0/)

(5) CNC milling machine worker (occupation code: 6-04-0 1-02)

2, the national occupation standard elementary and intermediate workers basic knowledge:

(1) mechanical drawing reading

(2) Mechanical foundation

(3) Mechanical manufacturing process basis

(4) fitter, lathe worker, milling worker, CNC lathe worker and CNC milling worker related process knowledge and operation skills.

3, the Ministry of education secondary vocational schools, mechanical drawing, mechanical foundation, mechanical manufacturing technology foundation, etc. 3 mechanical professional basic course syllabus. (See Document No.8 [2009] of the Faculty)

4. This outline is subject to the latest national standards promulgated and implemented in 2008.

Examination requirements

Mechanical professional skills assessment, choose five skills of fitter, lathe worker, milling worker, CNC lathe worker and CNC milling worker in secondary vocational schools. According to the national technical grade standards for junior and intermediate workers, candidates are required to use mechanical processing technology to process workpieces to meet the technical requirements of parts drawings.

Third, the examination method

When registering, candidates can choose 1 position from five positions: fitter, lathe worker, milling worker, CNC lathe worker and CNC milling worker. During the examination, candidates can draw the test paper parts according to the selected positions and complete the operation examination of processing parts.

The full score of the operation test is 300, including 270 points for operation skills and 30 points for professional accomplishment (on-site operation specification).

The operation assessment time of locksmith, lathe operator, milling operator, CNC lathe operator and CNC milling operator is 150 minutes. Candidates extract the drawings of the test parts according to the selected types of work and complete the operation test of the processed parts.

Fourth, the assessment content

The assessment content is divided into five types of work: fitter, lathe worker, milling worker, CNC lathe worker and CNC milling worker.

appropriate

According to the drawings of the parts to be processed, the processing technology, cutters, cutters, measuring tools and fixtures are reasonably selected, the workpieces are correctly installed, tools and measuring tools are used, and the parts are processed by hand and drilling machine (Z5 16). The specific inspection contents are as follows:

1. Basic operation skills (workpiece quality)

(1) Understand machined parts drawings: Understand common parts drawings and simple assembly drawings of locksmiths.

(2) According to the part drawing, reasonably select the processing technology (working procedure and working step) steps, and correctly select the processing tools, tools, measuring tools and fixtures.

(3) Use fitter's general fixture and special fixture correctly to clamp and align the workpiece.

(4) the correct use of common locksmith tools and tools (drill, scraper, etc. ).

2. Specific elements and requirements of operation skills (workpiece quality)

(1) Plane marking and three-dimensional marking of general workpieces

A. Draw lines with the help of height ruler, angle ruler, cross gauge, cross needle, sample punch and magenta.

B. Simple indexing and marking with the help of the indexing head.

C. testing.

(2) filing

A. Will choose to use ordinary filing tools and electric angle grinder, polishing machine, etc.

B master the correct filing posture and common filing methods and steps.

C filing and testing of common parts (angle formwork, male and female sleeves, etc.). ) can be carried out as required.

D file the angle template and the male and female sleeves within the range of100 mm× 80 mm. ..

E. flatness tolerance class IT9 and parallelism IT9.

F. surface roughness Ra3.2um

(3) sawing

A. Ordinary sawing tools and hand-held electric cutting machines will be selected.

B master the correct sawing posture and the sawing methods and steps of common parts.

C sawing and testing of common parts (metal plate, round steel, pipe, etc.). ) can be carried out as required.

D sawing range is 40mm×40mm or φ 40mm.

E. the dimensional tolerance class is 0.8 mm.

(4) chisel

A. You will choose to use ordinary chisel tools.

B master the correct hair-cutting posture and common hair-cutting methods and steps.

C. Able to chisel and detect common parts (flat, straight or curved oil tanks, etc.). ) as required.

D. chisel various profiles within the range of 50 mm× 50 mm

E. the dimensional tolerance class is 0.8 mm.

(5) hole processing

A. be able to operate and adjust the table drilling machine and hand electric drill.

B. small-diameter twist drills can be ground.

C drilling, reaming, reaming and testing of parts can be carried out as required.

Drill and ream two or three holes on the same plane.

E. dimensional tolerance level IT8.

F. when reaming, the surface roughness is less than or equal to Ra3.2um

G. Position tolerance class φ 0.2mm.

(6) Thread processing

A. The aperture size of the bottom hole of internal thread will be calculated.

B hand tools with internal and external threads can be used.

Thread processing and testing can be carried out as required.

E. manual tapping or threading.

F. thread accuracy grade IT8.

(7) Processing of integral parts

A. Processing dovetail blocks, semi-dovetail blocks, multi-angle templates, curve templates, etc.

① Form and position tolerance grade IT9.

② Dimensional tolerance grade IT8.

③ Surface roughness Ra3.2um

(4) The tolerance of hole spacing is 0.2mm. ..

B, can use simple geometry to make matching parts, to achieve general matching accuracy.

① Form and position tolerance grade IT9.

② Dimensional tolerance grade IT8.

③ Surface roughness Ra3.2um

(4) The tolerance of hole spacing is 0.2mm. ..

⑤ The fitting accuracy is: the clearance is not more than 0.05mm, and the directions can be relatively interchanged as required.