For the lathe tool model of teaching demonstration
Technical field
The present invention relates to metal cutting instructional technology field, especially a kind of lathe tool model for teaching demonstration.
Background technology
The cutter of a cutting tip processed, has by lathe tool for turning.Lathe tool is one of cutter most widely used in cut.The effect of lathe tool is exactly the excess metal layer excising on workpiece, and the cutting tip of general lathe tool is mainly made up of rake face, main rear knife face, minor flank, main cutting edge, front cutting edge and nose angle.The combination of the cutting tip of lathe tool and cutter hub (being clamping part) mainly contains monoblock type, welded type, mechanical clamping type and welding-mechanical clamping type.
Cutting-tool angle is the principal element that affects stock-removing efficiency and crudy, also be key factor, therefore in design, manufacture, when sharpening and measurement cutter, often need to control and guarantee cutting-tool angle, control and guarantee that cutting-tool angle must use orthogonal plane reference frame, i.e. three auxiliary planes, basal plane, principal section (being also orthogonal plane) and cutting plane, these three faces are emphasis in teaching, also be a teaching difficulty, at present, teacher is in the time of three auxiliary planes of explanation lathe tool, normally on blackboard, directly draw and explain, owing to being plan Drawing, need student to have stronger space imagining ability, therefore teacher can be very hard in explanation, student sounds that nature is also hard, so just make quality of instruction can not be guaranteed, knowledge explanation for lathe tool aspect is the problem of teacher's headache always, therefore be necessary to design a kind of teaching lathe tool model and solve this difficulties in teaching.
Summary of the invention
The technical problem to be solved in the present invention is: in order to solve the technical matters that adopts plan Drawing explanation lathe tool knowledge to be difficult to be understood by student in existing teaching, provide a kind of time saving and energy saving in teaching process, student easily understands again the lathe tool model for teaching demonstration that also can strengthen impression directly perceived.
The technical solution adopted for the present invention to solve the technical problems is: a kind of lathe tool model for teaching demonstration, cutter head is slit into main cutting blade at principal section and the punishment of secondary section, front cutting edge portion, nose part and cutter head connecting portion, described main cutting blade is arranged on by web member on the secondary section of cutter head, described front cutting edge portion is arranged on by web member on the principal section of cutter head, described nose part is fixedly connected with front cutting edge portion with main cutting blade respectively between main cutting blade and front cutting edge portion and by web member, on described cutter head connecting portion, be positioned at principal section place and offer the first jack, in described the first jack, be equipped with the first slide bar, one end hinged front cutting edge portion of the first slide bar, on described cutter head connecting portion, be positioned at secondary section place and offer the second jack, in described the second jack, be equipped with the second slide bar, the hinged main cutting blade in one end of the second slide bar.The technical program is specialized lathe tool, cutter head is cut apart to assembling, by main cutting blade and nose part are together opened, so just can see intuitively secondary section, front cutting edge portion and nose part are together opened, just can see intuitively principal section, cutting plane and basal plane can intuitively be found out again on lathe tool mould, and abstract concept of space is specialized, and are conducive to student's understanding, also be convenient to teacher's explanation, thereby improve teaching efficiency.
The exposed portions serve tail end of described the first slide bar and the second slide bar is provided with for preventing that slide bar from skidding off the stop screw of jack.
For convenient manufacture processed, the detachable installation of described cutter hub and cutter head.
In order to reduce the weight of model, described cutter hub inside is hollow-core construction.
Swing bicycle knife mold during for the ease of explanation, described cutter hub bottom is provided with the support for fixing lathe tool.
For the ease of dismounting and easy to assembly, described web member is socket head cap screw.
The invention has the beneficial effects as follows, the lathe tool model for teaching demonstration of the present invention, its principal section, secondary section respectively all can be by the projection relation corresponding components that overturns, and tool has the following advantages:
1), simple in structure, easy accessibility, clear: to tap into row need to several flat sided straight of student explain and cut into piece, and then be assembled into tool bit part, and when explanation, split assembling, and can see clearly and want the plane seen.
2), time saving and energy saving, teacher and student doulbe-sides' victory: directly adopt explanation in kind being drawn at ordinary times the content of explaining on blackboard, material object is split to the method for similar dissection, abstract concept has been specialized, student, from having strengthened intuitively understanding, no longer dreams up, theoretical in conjunction with practice, deepen memory, therefore teacher is light again in teaching, and student has been raised again interest, and quality of instruction is also synchronously improved certainly.
Therefore the present invention has solved the difficult assurance of lathe tool teaching aspect teacher cleverly, and student's indigestible difficult problem hard to imagine, has increased the interest of imparting knowledge to students, and has strengthened the interaction between teachers and students.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of the lathe tool model for teaching demonstration of the present invention;
Constitutional diagram when Fig. 2 is the demonstration principal section of the lathe tool model for teaching demonstration of the present invention;
Fig. 3 is that the A of Fig. 2 is to view;
Constitutional diagram when Fig. 4 is the secondary section of the demonstration of the lathe tool model for teaching demonstration of the present invention;
Fig. 5 is that the B of Fig. 4 is to view.
In figure: 1. cutter hub, 2. cutter head, 21. main cutting blades, 22. front cutting edge portions, 23. nose part, 24. cutter head connecting portions, 241. first jacks, 242. second jacks, 3. the first slide bar, 4. the second slide bar, 5. stop screw.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, and basic structure of the present invention is only described in a schematic way, and therefore it only shows the formation relevant with the present invention.
The specific embodiment of the lathe tool model for teaching demonstration of the present invention as shown in Fig. 1 ~ 5, comprise cutter hub 1 and cutter head 2, cutter hub 1 and the detachable installation of cutter head 2, cutter head 2 is slit into main cutting blade 21 at principal section and the punishment of secondary section, front cutting edge portion 22, nose part 23 and cutter head connecting portion 24, main cutting blade 21 is arranged on by web member on the secondary section of cutter head 2, front cutting edge portion 22 is arranged on by web member on the principal section of cutter head 2, nose part 23 is fixedly connected with front cutting edge portion 22 with main cutting blade 21 respectively between main cutting blade 21 and front cutting edge portion 22 and by web member, on cutter head connecting portion 24, be positioned at principal section place and offer the first jack 241, in the first jack 241, be equipped with the first slide bar 3, one end hinged front cutting edge portion 22 of the first slide bar 3, on cutter head connecting portion 24, be positioned at secondary section place and offer the second jack 242, in the second jack 242, be equipped with the second slide bar 4, the hinged main cutting blade 21 in one end of the second slide bar 4.For the ease of dismounting and installation, web member adopts socket head cap screw.
As the preferred structure of the present embodiment, the exposed portions serve tail end of the first slide bar 3 and the second slide bar 4 is provided with for preventing that slide bar from skidding off the stop screw 5 of jack.In order to reduce tool weight, cutter hub 1 inside is hollow-core construction, swing bicycle knife mold during for the ease of explanation, and cutter hub 1 bottom is provided with the support for fixing lathe tool.In the present invention, principal section and secondary section all can overturn by projection relation respectively, introduce the present invention below in conjunction with concrete use.
As Fig. 2 ~ 3, in the time that demonstration principal section is orthogonal plane, turn on being fixed on the front cutting edge portion 22 on cutter head connecting portion 24 and the screw being fixed in the nose part 23 on main cutting blade 21, nose part 23 and front cutting edge portion 22 are fixed by socket head cap screw, screw herein is not taken apart, to guarantee nose part 23 and front cutting edge portion 22 one, due to front cutting edge portion 22 and the first slide bar 3 hinged, thereby in the time that the nose part of one 23 and front cutting edge portion 22 are overturn, the first slide bar 3 is raised, after upset puts in place, just can see principal section clearly clearly.
As Fig. 4 ~ 5, in the time of the secondary section of demonstration, turn on the screw of main cutting blade 21 and cutter head connecting portion 24 contact positions, the screw of turning on again nose part 23 and front cutting edge portion 22 contact positions, in main cutting blade 21 and nose part 23, fixing screw is not turned on, and guarantees integrative-structure, at this moment open nose part 23 and the main cutting blade 21 of one, the second slide bar 4 is raised, and after upset puts in place, just can clearly see secondary section.
Cutting plane and basal plane can directly be observed and draw in the present invention, without any parts of dismounting, therefore, the present invention directly cuts at secondary section and principal section punishment, assembles, when teaching by cutting apart the parts that obtain again, reasonably remove and install, just can obtain wanting the various planes of seeing, theory and practice combination, has promoted quality of instruction.
Take above-mentioned foundation desirable embodiment of the present invention as enlightenment, by above-mentioned description, relevant staff can, not departing from the scope of this invention technological thought, carry out various change and modification completely.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to claim scope.