CN205097065U - Helical -lobe compressor female rotor shaping CBN emery wheel - Google Patents
Helical -lobe compressor female rotor shaping CBN emery wheel Download PDFInfo
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- CN205097065U CN205097065U CN201520782195.XU CN201520782195U CN205097065U CN 205097065 U CN205097065 U CN 205097065U CN 201520782195 U CN201520782195 U CN 201520782195U CN 205097065 U CN205097065 U CN 205097065U
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Abstract
The utility model discloses a helical -lobe compressor female rotor shaping CBN emery wheel, including the base member wheel of disc type, be equipped with the centre bore in the axis department of base member wheel, take turns to at the base member and use its axis as a set of through -hole of central line circumference equipartition, be equipped with the annular mill body in the outside of base member wheel, be equipped with the molded lines profile that is used for the grinding in the outside of grinding the body, the both sides of molded lines profile all are equipped with the spill curved surface of inside setting, the both sides of molded lines profile all a circumference equipartition copy cast cut the groove, the row of molded lines profile homonymy cuts the rotatory incline direction in groove unanimously. The utility model discloses an advantage: this emery wheel is little in the loss of grinding in -process, can keep sharp nature, does not need in the course of working to maintain, and machining efficiency and life are high, prevents the abrasive wear passivation, and grinding resistance increases, the burn and the jam condition appear, suitable high -speed grinding, and the roughness ra value of work piece can reach 0.4 mu m, and the expensive expense that reuse and base member were processed has been saved to the wearability is good and the deflection is little steel.
Description
Technical field
The utility model relates to a kind of grinding materials and grinding tool, particularly relates to the shaping CBN emery wheel of a kind of helical-lobe compressor female rotor.
Background technology
Helical-lobe compressor is widely used in air force, art of refrigeration units, it has, and structure is simple, stability is strong, the life-span is long, efficiency advantages of higher, rotor is as the core component of helical-lobe compressor, its machining accuracy determines Kao ﹑ efficiency and the noise of compressor operating to a great extent, the molded line of rotor tooth form is very complicated, processing request is very high, and processing method conventional at present has three kinds: dish-type milling tool Fa ﹑ generate rolling method and shaping grinding method.
Need calibration milling one by one during dish-type milling tool method processing rotor profile of tooth, belong to discontinuous processing, there is the larger error of division.Therefore, there is the problem that production efficiency is low and machining accuracy is low in the processing of milling method, thus affects the operating efficiency of helical-lobe compressor.
Generate rolling method, compared with dish-type milling tool method, can complete processing by one-pass, need not calibration, in theory without the error of division, thus its productivity ratio is higher, and processing profile accuracy is high, and pitch error is little, the machining accuracy of rotor can be ensured, can save process time again, but also there is limitation, namely the molded line of screw rod must be processed by rolling method, molded line is confined to use standard tooth form, i.e. Symmetrical Circular Arc profile of tooth and arc toothed two kinds of monolateral asymmetric cycloid pin tooth.Because the arc toothed helical-lobe compressor of monolateral asymmetric cycloid pin tooth has the advantages such as low in energy consumption, machine air-tightness is good, current domestic manufacturer almost all adopts this molded line screw.But because its profile is complicated, there is cusp in profile and be asymmetric tooth, therefore, hobboing cutter manufacture and design difficulty, therefore be difficult to be promoted with the screw rod rolling method of rolling for milling.
Shaping grinding method emery wheel is made the shape matched with rotor tooth form profile to carry out comprehensive engagement grinding, this method can overcome the deficiencies such as the low and molded line limitation of production efficiency Di ﹑ machining accuracy that dish-type milling method and generate rolling method exist, the precision and stability of effective guarantee rotor, significantly improve working (machining) efficiency, and be applicable to various different molded lines of rotor.
Shaping CBN emery wheel take cubic boron nitride as abrasive material, this abrasive material is that hardness is only second to adamantine superhard material, it not only has adamantine many good characteristics, and have higher heat endurance and the chemical inertness to iron group metal and alloy thereof, effectively can reduce the fatigue strength of workpiece to be machined in grinding process, increase workpiece service life, and self-sharpening is good, grinding is sharp, and not easily block and burn workpiece, is applicable to high-speed grinding.CBN abrasive material is cemented in the steel matrix that Precision Machining is shaping by galvanoplastic, can carry out hard grinding, and can well keep form accuracy to steel part or ironcasting.Due to above characteristic, shaping CBN emery wheel is applicable to being used on shaping grinding method processing rotor of helical lobe compressor very much.
This helical-lobe compressor male rotor shaping CBN emery wheel can supporting home and overseas high-speed numeric control rotor grinding machine, and clamped one time carries out Cu ﹑ fine grinding, and emery wheel does not need finishing in using, and can keep very high contour accuracy, grinding wheel base body reuses after can taking off sand.
Utility model content
The purpose of this utility model is to provide the helical-lobe compressor female rotor that a kind of grinding accuracy is high, be applicable to different molded line, and the shaping CBN emery wheel of a kind of helical-lobe compressor female rotor proposed.
To achieve these goals, the utility model have employed following technical scheme:
The shaping CBN emery wheel of a kind of helical-lobe compressor female rotor, it is characterized in that: the matrix wheel comprising collar plate shape, the axis place of taking turns at described matrix is provided with centre bore, on described matrix wheel centered by its axis line circumference uniform distribution one group of through hole, the mill body of annular is provided with in the outside that described matrix is taken turns, the molded line profile for grinding is provided with in the outside of described mill body, the both sides of described molded line profile are equipped with the convex surface outwards arranged, in the both sides of described molded line profile, all circumference uniform distribution one group row cuts groove, and the row of described molded line profile homonymy cuts groove, and to rotate incline direction consistent.
Preferably, the diameter of described emery wheel is Φ 180-400mm, and thickness is 10-200mm, and the thickness of described mill body is less than the thickness of matrix wheel.
Preferably, be respectively equipped with a groove in the both sides that described matrix is taken turns, the length of described groove is 0-50mm.
Preferably, the quantity that the one-sided row of described molded line profile cuts groove is 0-100, and the width that each row cuts groove is 1-8mm, the degree of depth is 0.5-8mm.
Preferably, described row cuts the bottom land of groove is right angle or circular arc.
The utility model has the advantage of: the loss of a kind of helical-lobe compressor female rotor provided by the utility model shaping CBN emery wheel in grinding process is very little, sharpness can be kept, finishing is not needed in process, working (machining) efficiency and service life are enhanced about more than once than profile milling cutter wheel, more than twice is improved, within the deviation of initial workpiece and last part can be controlled in 0.005mm during batch machining than common corundum emery wheel.Adopt suitable CBN abrasive material can ensure that emery wheel keeps sharp in whole working life, prevent abrasive wear passivation, grinding resistance strengthens, and occurs burn and stopping state.
Shaping CBN emery wheel adopts the steel matrix of high strength, and maximum linear velocity can reach 125m/s, and plated metal bonding agent is also very firm to the hold of abrasive material, be applicable to high-speed grinding, rotating speed is higher, grinding quality and efficiency higher, the surface roughness Ra value of workpiece can reach 0.4 μm.Employing hardness and the steel that all even ﹑ wearability of structure is good and deflection is little, heat treatment hardness reaches as high as HRC60, and matrix can repeatedly reuse when artificial damage.
Shaping CBN emery wheel can really realize deeply grinding processing without milling, namely the method such as traditional Che ﹑ milling need not carry out preprocessing and directly output flute profile from entity grinding.Which save for the manufacture of the plenty of time needed for milling cutter and expensive expense, accelerate research and development and the production of new molded lines of rotor.
Emery wheel fluting makes grinding fluid enter grinding area and is beneficial to cooling and cleaning, effectively can avoid the situation occurring burn and blocking during large emery wheel bump contact grinding.
The utility model is reasonably combined by CBN Mo Liao ﹑ Ji body Cai Liao ﹑ basic structure and fluting form etc., meets the actual demand of different client, provides the emery wheel of high performance-price ratio.
Accompanying drawing explanation
Fig. 1 is the structural representation of the shaping CBN emery wheel of a kind of helical-lobe compressor female rotor provided by the utility model;
Fig. 2 is A-A sectional view of Fig. 1;
Fig. 3 is the another kind of structural representation of Fig. 1;
Fig. 4 is B-B sectional view of Fig. 3.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment one: this emery wheel is cemented in by cubic boron nitride (CBN) abrasive material in the steel matrix that Precision Machining is shaping by galvanoplastic.Described cubic boron nitride (CBN) abrasive material can select abrasive material that is domestic or import according to the Cai Zhi ﹑ life requirements of client's processing work and price request etc., and corase grind and finishing wheel select varigrained CBN abrasive material respectively.Described steel matrix can select domestic steel or imported steel according to the different demands of client, and require hardness and structure evenly, wearability is good and deflection is little, and heat treatment hardness reaches as high as HRC60.
As depicted in figs. 1 and 2, the shaping CBN emery wheel of a kind of helical-lobe compressor female rotor that the utility model provides, described grinding wheel diameter determines according to the length of great little ﹑ molded line of rotor and the model of special purpose grinder, this programme grinding wheel diameter adopts Φ 180-400mm, rotor is larger, molded line is longer, and the setting value of diameter is larger, but must consider the grinding stroke restriction of grinding machine.
The gross thickness of described emery wheel determines according to the width of molded lines of rotor and the model of special purpose grinder, and its thickness adopts 10-200mm, and molded lines of rotor is wider, and thickness is thicker, but must consider the main axis length restriction of grinding machine.
Described emery wheel comprises the matrix wheel 1 of collar plate shape, centre bore 2 is provided with at the axis place of described matrix wheel 1, on described matrix wheel 1 centered by its axis line circumference uniform distribution one group of through hole 3, be provided with the mill body 4 of annular in the outside of described matrix wheel 1, the thickness of described mill body 4 is less than the thickness of matrix wheel 1.
Be provided with the molded line profile 5 for grinding at the cylindrical of described mill body 4, the both sides of described molded line profile 5 are equipped with the convex surface outwards arranged, and in the both sides of described molded line profile 5, all circumference uniform distribution one group row cuts groove 6, and described row cuts groove 6 and is obliquely installed to same direction.The quantity that the one-sided row of described molded line profile 5 cuts groove 6 is 0-100, and the width that each row cuts groove 6 is 1-8mm, the degree of depth is 0.5-8mm.
Described row cuts groove 6 for chip removal, reduces the temperature of the emery wheel when grinding, the localized burn easily occurred when solving large area grinding and the generation of stopping state, and the fluting direction that described row cuts groove 6 is contrary with emery wheel direction of rotation, is conducive to the discharge of workpiece debris.It is right angle or circular arc that described row cuts groove 6 bottom land, and described row cuts two edges of groove 6 and described molded line profile 5 arc transition, and playing platform after preventing plating sand affects grinding accuracy.Emery wheel described in this programme must avoid damage in client's use procedure, and matrix reuses after can taking off sand.
Embodiment two, as shown in Figure 3 and Figure 4, the size that the both sides of matrix wheel 1 are respectively equipped with a groove 7, two described circular grooves described in embodiment one needs to determine according to particular type line profile and installation, and scope is 0-50mm.Two described groove 7 end surface thickness are root thickness of described emery wheel, root thickness is associated with the tool setting grinding position before the reference position of cylindrical molded line and stone and calculates, its tolerance is+0.05～– 0.05mm, both ends of the surface depth of parallelism General Requirements 0.002-0.01mm.
Claims (5)
1. the shaping CBN emery wheel of helical-lobe compressor female rotor, it is characterized in that: matrix wheel (1) comprising collar plate shape, centre bore (2) is provided with at the axis place of described matrix wheel (1), on described matrix wheel (1) centered by its axis line circumference uniform distribution one group of through hole (3), the mill body (4) of annular is provided with in the outside of described matrix wheel (1), the molded line profile (5) for grinding is provided with in the outside of described mill body (4), the both sides of described molded line profile (5) are equipped with the convex surface outwards arranged, in the both sides of described molded line profile (5), all circumference uniform distribution one group row cuts groove (6), the row of described molded line profile (5) homonymy cuts groove (6), and to rotate incline direction consistent.
2. the shaping CBN emery wheel of a kind of helical-lobe compressor female rotor according to claim 1, it is characterized in that: the diameter of described emery wheel is Φ 180-400mm, thickness is 10-200mm, and the thickness of described mill body (4) is less than the thickness of matrix wheel (1).
3. the shaping CBN emery wheel of a kind of helical-lobe compressor female rotor according to claim 1, it is characterized in that: be respectively equipped with a groove (7) in the both sides of described matrix wheel (1), the length of described groove (7) is 0-50mm.
4. the shaping CBN emery wheel of a kind of helical-lobe compressor female rotor according to claim 1, it is characterized in that: the quantity that the one-sided row of described molded line profile (5) cuts groove (6) is 0-100, the width that each row cuts groove (6) is 1-8mm, the degree of depth is 0.5-8mm.
5. the shaping CBN emery wheel of a kind of helical-lobe compressor female rotor according to claim 1, is characterized in that: the bottom land that described row cuts groove (6) is right angle or circular arc.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520782195.XU CN205097065U (en) | 2015-10-10 | 2015-10-10 | Helical -lobe compressor female rotor shaping CBN emery wheel |
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| CN201520782195.XU CN205097065U (en) | 2015-10-10 | 2015-10-10 | Helical -lobe compressor female rotor shaping CBN emery wheel |
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| CN205097065U true CN205097065U (en) | 2016-03-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108044202A (en) * | 2017-12-04 | 2018-05-18 | 汉江工具有限责任公司 | Process the hobboing cutter and its production method of screw rotor |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108044202A (en) * | 2017-12-04 | 2018-05-18 | 汉江工具有限责任公司 | Process the hobboing cutter and its production method of screw rotor |
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