A kind of diamond-impregnated wheel with multilayer helical teeth
Technical field
The utility model relates to grinding tool, particularly relates to a kind of diamond-impregnated wheel for carrying out grinding for hard material.
Background technology
The length and width specification that Ceramic Tiles or the many needs of stone material are fixed, so that construction and installation, therefore needs to carry out edging process.But the edge for firmly crisp Ceramic Tiles or stone material carries out grinding, need to use specific grinding tool---diamond-impregnated wheel.Adopt diamond abrasive tool to carry out grinding to goods, the product of the high-quality of fixing specification can be obtained.
At present, used in the industry diamond-impregnated wheel comprises: multiple diamond segments of discoid metallic matrix and marginal surface fixed thereon.The shape of diamond segment is roughly cuboid, along the radial vertical distribution of metallic matrix, is formed circular.Such vibrational power flow makes cutter head process and installs facility, but can cause adverse effect to diamond-impregnated wheel performance.Because the matrix installing cutter head is disc, cutter head is arranged in circular the circumferential edges installing matrix, and along installing the radial variations of matrix, the circumferential width of cutter head is unequal, inside adjacent tool tips, spacing is less simultaneously, arrange when being welded and fixed careless slightly, adjacent tool tips just there will be adhesion.
Based on the above feature of existing emery wheel, it is little to there is inner side spacing in it, and when can cause grinding, chip removal is not smooth, heat-sinking capability is not enough, affects the service life of rubbing down effect and diamond-impregnated wheel; During square cutter head grinding, cutting angle is comparatively large, cuts stressed comparatively large, makes the cutter head lost of life.
Summary of the invention
The utility model is in order to solve the technical problem of existing diamond-impregnated wheel, and it is high that proposition one has grinding efficiency, perfect heat-dissipating, the diamond-impregnated wheel with multilayer helical teeth of the advantage of long service life.
A kind of diamond-impregnated wheel with multilayer helical teeth that the utility model proposes, it comprises: metallic matrix and diamond segment.Described diamond segment is circular and be located at the side at described metallic matrix edge at least two circles, is provided with radial clearance, is provided with circular gap between the diamond segment that same circle is adjacent between the diamond segment that described each circle is circular; Described circular gap is skewed, and the radius of circular gap and described metallic matrix is an angle, makes diamond segment be helical teeth shape.
Preferably, described radial clearance can be 0.5 ~ 1mm.
Preferably, the radius angle of described circular gap and described metallic matrix can be 30 ~ 70 °.
Preferably, described diamond segment is the two circular sides being located at described metallic matrix edge of circle, circular gap between the diamond segment that outer ring is adjacent is 0.5 ~ 3mm, the equal or circular gap that is greater than between the adjacent diamond segment in outer ring of the circular gap between the diamond segment that the circular gap between the diamond segment that inner ring is adjacent is adjacent with described outer ring.
Wherein, described outer ring diamond segment outer arcuate radius equals exradius, the little 5 ~ 8mm of inner side arc radius ratio outer radius of described metallic matrix; Little 4 ~ the 6mm of outer arc radius of the inner side arc radius ratio inner ring diamond segment of inner ring diamond segment.
Described metallic matrix center is provided with installing hole, has locating hole around described installing hole.
Described locating hole can arrange 3 ~ 6.
Described quantity of often enclosing diamond segment can be 8 ~ 36.
Compared to the prior art, the utility model has following beneficial effect:
The lifting of cutting ability.Adopt helical teeth, reduce cutting angle during cutting, improve the sharpness of emery wheel, cutting ability gets a promotion.
The lifting of heat dispersion.Adopt the structure of multi-turn cutter head, often enclose and be made up of multiple cutter head, greatly add the area of dissipation of cutter head, thus effectively improve the heat dissipation problem of emery wheel.
Tool bit abrasion is even, and service life promotes.Because inner side cutter head radiating condition is poor, therefore must be thinner than the radial thickness of outer cutter head by interior segment design during design, thus wear extent is close in use to make both, the raising of emery wheel sharpness simultaneously and the improvement of thermal diffusivity, therefore the bulk life time of emery wheel gets a promotion.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the utility model preferred embodiment;
Fig. 2 is the cutter head end face structure schematic diagram of the utility model preferred embodiment;
Fig. 3 be in Fig. 2 B-B to semi-section schematic diagram;
Fig. 4 is the partial enlargement structural representation of cutter head part A in Fig. 2.
Wherein: 1-metallic matrix, 2-diamond segment, 3-installing hole, 4-locating hole, 201-inner ring cutter head, 202-outer ring cutter head, 501-Internal and external cycle cutter head spacing, 502-same circle cutter head spacing.
Detailed description of the invention
The technical solution of the utility model is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
As shown in Fig. 1 ~ 4, a kind of diamond-impregnated wheel with multilayer helical teeth that the utility model preferred embodiment discloses, it comprises: the discoidal metallic matrix 1 being passed through machine tooling by hard alloy steel or aluminium alloy, this metallic matrix is provided with installing hole 3,3-6 locating hole 4 is provided with around installing hole, matrix needs the groove having twice annular at the position car installing cutter head, locate when welding for cutter head.Also comprise the diamond segment 2 sintered by diamond alloy material.Diamond segment 2 is circular and be located at the side (end face) at described metallic matrix 1 edge at least two circles.Please read Fig. 4, between the diamond segment 2 that described each circle is circular, be provided with radial clearance 501, between the diamond segment 2 that same circle is adjacent, be provided with circular gap 502; Described circular gap 502 is in skewed, and circular gap 502 is an angle with the radius of described metallic matrix 1
α, make diamond segment 2 in helical teeth shape.And radial clearance 501 is 0.5 ~ 1mm.
The present embodiment, as shown in Fig. 1 ~ 4, diamond segment 2 is in the two circular sides (end face) being located at metallic matrix 1 edge of circle, and cutter head is divided into outer ring diamond segment 202 and inner ring diamond segment 201, in cutter head radial direction, lateral surface is arc surface, and left and right side is inclined plane.The radius angle of circular gap 502 and metallic matrix 1
αbe chosen to be 30 ~ 70 °.Angle is little, and the sharpness of cutter head increases, and grinding efficiency is high, but correspondingly, on cutter head, the feasibility broken of helical teeth also increases; Angle is large, and the sharpness of cutter head reduces, and grinding efficiency is low, but corresponding, and on cutter head, the possibility that breaks of helical teeth is also lower, thus consider angle be chosen at 30 ~ 70 ° comparatively suitable.Outer ring diamond segment outer arcuate radius equals exradius, the little 5 ~ 8mm of inner side arc radius ratio outer radius of metallic matrix 1; Little 4 ~ the 6mm of outer arc radius of the inner side arc radius ratio inner ring diamond segment of inner ring diamond segment.Namely outer ring diamond segment 202 radial thickness is 5 ~ 8mm, inner ring diamond segment 201 radial thickness is 4 ~ 6mm, because inner ring diamond segment 201 dispels the heat poor, therefore make interior cutter head grinding area less with this, make inside and outside tool bit abrasion amount substantially suitable, thus improve the bulk life time time of emery wheel.Circular gap 502 between the diamond segment 202 that outer ring is adjacent is 0.5 ~ 3mm, circular gap between the diamond segment 201 that inner ring is adjacent can be adjacent with outer ring diamond segment 2 between circular gap equal, also can be greater than the circular gap between the adjacent diamond segment in outer ring 202.The quantity of often enclosing diamond segment 2 is 8 ~ 36.
During making, soldering is used to be welded on by diamond segment on metallic matrix 1, it is 0.5 ~ 1mm that radial clearance 501 between inside and outside circle diamond segment 201,202 ensures, same circle diamond segment 2 circular gap 502 ensures be 0.5 ~ 3mm, and the bevel direction of Internal and external cycle cutter head is to it.By cutter head is divided into two circles, and be divided into multiple by every circle, greatly increase each cutter head area of dissipation, the circular gap 502 simultaneously tilted also is conducive to the eliminating of abrasive dust, thus effectively can improve chip removal and the heat dispersion of emery wheel.
During installation, emery wheel is arranged on the output shaft of grinding machine by installing hole 3, and by locating hole 4, use bolt to be fixed, certain locate mode is not limited thereto, and can play other modes of fixing emery wheel.During use, starter motor, when need the Ceramic Tiles of processing or stone material between relative diamond-impregnated wheel through out-of-date, diamond-impregnated wheel carries out grinding to its edge, obtains the product that the smooth of the edge is smooth, specification is consistent.Diamond-impregnated wheel mill sharpness of the present utility model is high, and chip removal is effective, can avoid cutting the gap location of residue between cutter head and remain, and evenly, tool bit abrasion is comparatively even, and bulk life time gets a promotion in heat radiation.
Below know-why of the present utility model is described in conjunction with specific embodiments.These describe just in order to explain principle of the present utility model, and can not be interpreted as the restriction to the utility model protection domain by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other detailed description of the invention of the present utility model, and these modes all will fall within protection domain of the present utility model.