CN208906319U - A kind of anti-milling cutter in bottom surface - Google Patents

Abstract

The utility model relates to a kind of anti-milling cutters in bottom surface, including be mounted on milling machine knife bar, be arranged in cutterhead fan-shaped on knife bar, cutterhead the blade of changeable cutting angle size is provided on the periphery of knife bar side and be connected with cutterhead for cutting off the cutter of cutting swarf, cutter can be swung relative to cutterhead, the double thread structure for chip removal is provided on cutter, the distance between cutter and blade are 13 ~ 15 centimetres, and the central angle of fan-shaped cutterhead is 180 ~ 270 degree.The utility model solves processing top when having the counterbore blocked, it has not been convenient to which the problem of moving back bits provides a kind of anti-milling cutter in bottom surface and its application method, be able to achieve the processing of workpiece and move back bits.

Description

A kind of anti-milling cutter in bottom surface

Technical field

The utility model belongs to the anti-milling cutter in cutting tool field more particularly to a kind of bottom surface.

Background technique

There are many kinds of blade shapes, adds on plain-milling machine and CNC milling machine processing groove and outline of straight line, milling boring machining center Drum chamber, type core, curved profile, profile are used.With the development of science and technology, more and more milling cutters are applied leads in cutting tool Domain.In Chinese Publication No. CN104339009A, publication date is on 2 11st, 2015, and utility model creates a kind of entitled use A kind of milling cutter for mold processing is disclosed in the milling cutter of mold processing, this application, it includes milling cutter shank, taper mill What interconnecting piece and cutter hub, cutter head, taper mill interconnecting piece and knife handle were wholely set, cutter hub is welded on taper mill interconnecting piece end Portion, cutter head are welded on cutter hub end, and cutter head and cutter hub weld are fixed with reinforcing rib, and the section of the reinforcing rib is arc.The Shen Please technical solution disclosed in case can carry out Milling Process to workpiece.But processing some counterbore class workpiece, counterbore to be processed Surface be provided with other positions and block, for example, workpiece as shown in Figure 1, utilizes technical solution disclosed in this application When directly processing, position can be interfered with milling cutter disclosed in this application above counterbore to be processed, lead to not process, In the workpiece that processing via diameter is different with diameter is processed, need to carry out the replacement of cutter.And milling cutter is in milling counterbore, When chip removal is excessive, on the one hand causes milling cutter fever serious, become larger additionally, due to resistance, it is easy to milling cutter be made asking for breaking occur Topic.It would therefore be highly desirable to design a kind of device that can move back bits, milling cutter can be made conveniently to move back bits during milling, and then make milling cutter Service life improves.

Summary of the invention

The utility model solves when having the counterbore blocked above processing, it has not been convenient to which the problem of moving back bits provides a kind of bottom The anti-milling cutter in face is able to achieve the processing of workpiece and moves back bits.

The utility model the specific technical proposal is:

A kind of anti-milling cutter in bottom surface, including be mounted on milling machine knife bar, cutterhead fan-shaped on knife bar is set, cutterhead leans on The blade of changeable cutting angle size is provided on the periphery of nearly knife bar side and what is be connected with cutterhead is used to cut off cutting swarf Cutter, cutter can be swung relative to cutterhead, and the double thread structure for chip removal is provided on cutter, between cutter and blade away from From being 13 ~ 15 centimetres, the central angle of fan-shaped cutterhead is 180 ~ 270 degree.The cutterhead of the prior art is cylinder, and cutterhead is arranged to Sector is more convenient chip removal compared with the prior art, and the chip removal that cutter processing generates can be discharged from the side of cutterhead, convenient for workpiece Move back bits；Blade is in cutterhead on the periphery of knife bar side, and blade and knife bar protrude into hole to be processed, there is processing top When the counterbore blocked, knife bar will not be interfered with position above counterbore to be processed；It is provided on the periphery of cutterhead changeable The blade of cutting angle size is able to achieve the requirement at different cutting angles；The double thread structure for chip removal, double spiral shells are provided on cutter Rotation structure is conducive to move back bits convenient for transferring out chip removal；The distance between cutter and blade are 13 ~ 15 centimetres, milling process When the chip removal of generation is excessive, cutter can cut chip removal, convenient for moving back bits, in addition, cutter can be with when chip removal accumulation is excessive Loose effect is played, convenient for moving back bits, when distance is greater than 15 centimetres, due to being too far apart the effect for being not achieved and being convenient for moving back bits； The processing diameter of via diameter and counterbore to be processed for different workpieces to be processed is applicable in.

Scheme as a preference of the above scheme, double thread structure are made of trapezoidal thread and triangle thread.It is trapezoidal Screw thread and triangle thread adapt to the requirement of different chip removals, realize better chip removal.

Scheme as a preference of the above scheme, the tall and big tooth in triangle thread of the tooth of trapezoidal thread are high.Trapezoidal spiral shell The tall and big tooth in triangle thread of the tooth of line is high, and chip removal is discharged by triangle thread two sides, is able to satisfy wanting for different chip removals It asks, trapezoidal thread plays the interval action between screw thread.

Scheme as a preference of the above scheme is provided with knife rest on cutterhead, and knife rest end is provided with mounting groove and support The wing, cutter are mounted in mounting groove, and braced wing holds cutter.Braced wing is mainly used for supporting cutter, and mounting groove is mainly used for cutting The installation of knife.

Scheme as a preference of the above scheme, cutter are hinged in the mounting groove of knife rest, and cutter two sides and knife rest are logical Cross spring connection.Cutter is connect with knife rest by spring, and cutter is enable to swing relative to knife rest, is convenient for better chip removal.

Scheme as a preference of the above scheme, the cutting angle that cutterhead cutter is arranged in is 40 ~ 50 degree.Work as cutting angle When greater than 40 degree or 50 degree, it is not easy to milling.

Scheme as a preference of the above scheme, the fixed form between cutterhead and knife bar are to be threadedly coupled.Cutterhead and Fixed form between knife bar is to be threadedly coupled, convenient for the installation and removal of cutterhead；Can according to the size in hole, to cutterhead size into Row adjustment, adapts to the requirement of different pore size.

Scheme as a preference of the above scheme, blade are TCMT16 carbide chip.TCMT16 carbide cutter tool There is piece superpower wear-resistant performance, performance to stablize.

Scheme as a preference of the above scheme, the material of knife bar are 40Cr.There is the knife bar of 40Cr manufacture to bear weight Load, low impact and has many advantages, such as preferable wearability.

The beneficial effects of the utility model are:

1. the utility model, which solves processing top, the counterbore blocked, it has not been convenient to which the problem of moving back bits is able to achieve workpiece Processing and move back bits；

2. the utility model is processed by the way of counter mill, there can be the counterbore blocked to process top；

3. the cutterhead of the utility model uses sector structure, bits are moved back when convenient for milling；

4. the scheme that the utility model uses is straight for the processing of the via diameter counterbore equally to be processed of workpiece to be processed Diameter is different or the different counterbore processing diameter to be processed of the via diameter of workpiece to be processed is the same or workpiece to be processed The different situation of processing diameter of the different counterbore to be processed of via diameter is applicable in.

Detailed description of the invention

Fig. 1 is the schematic diagram of the workpiece to be processed of the utility model；

Fig. 2 is the structural schematic diagram of the utility model；

Fig. 3 is the partial enlarged view in the portion A of Fig. 2 of the utility model；

Fig. 4 is the partial sectional view of the double thread structure of the utility model；

Fig. 5 is the knife bar of the utility model and the installation cross-sectional view of cutterhead；

Fig. 6 is the stereoscopic schematic diagram of the utility model.

In figure: 1, blade, 2, cutterhead, 3, knife bar, 4, cutter, 5, fixing screws, 6, double thread structure, 7, triangle spiral shell Line, 8, trapezoidal thread, 9, knife rest, 10, mounting groove, 11, braced wing, 12, screw, 13, workpiece to be processed, 14, counterbore to be processed, 15, spring.

Specific embodiment

Below by specific embodiment, and in conjunction with attached drawing, the utility model will be further described.

Embodiment 1:

As shown in Fig. 2, a kind of anti-milling cutter milled in bottom surface includes blade 1, cutterhead 2, knife bar 3, cutter 4 and knife rest 9.

As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, knife bar 3 is mounted on milling machine, and the material of knife bar 3 is 40Cr.Cutterhead 2 For sector structure, the central angle of fan-shaped cutterhead is 180 ~ 270 degree.Fixed form between cutterhead 2 and knife bar 3 is screw thread company It connects, is connected between cutterhead 2 and knife bar 3 by screw 12.Blade 1 is provided on cutterhead 2, blade is TCMT16 carbide cutter tool Piece, the cutting angle of blade 1 are 40 ~ 50 degree.Blade 1 is mounted on cutterhead 2 on the periphery of 3 side of knife bar, and blade 1 is triangle The cutting angle of star structure, the end of 1 triangle of blade is all different, and is fastened between blade 1 and cutterhead 2 by fixing screws 5, is led to It crosses and send out fixing screws 5 and rotating blade 1 that can realize that cutting angle size changes.

As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 6, knife rest 9 is provided on cutterhead 2,9 end of knife rest is provided with mounting groove 10 and support The wing 11, cutter 4 are mounted in mounting groove 10, and braced wing 11 holds cutter 4.Mounting groove 10 is T-shaped structure, and cutter 4 is hinged on knife In the mounting groove 10 of frame 9,4 two sides of cutter are connect with knife rest 9 by spring 15, and cutter 4 is enable to swing relative to cutterhead 2.Cutter 4 On be provided with double thread structure 6 for chip removal, double thread structure 6 is made of trapezoidal thread 8 and triangle thread 7.Trapezoidal spiral shell The tall and big tooth in triangle thread 7 of the tooth of line 8 is high.The distance between cutter and blade are 13 ~ 15 centimetres.

As shown in Figure 1, Figure 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6 make work in use, workpiece to be processed 13 is fixedly installed on milling machine Counterbore 14 to be processed is placed downward on part；Milling cutter is installed on milling machine；Control milling cutter moves down, and reaches it to be processed heavy In hole 14；A design eccentricity value is moved along the radial direction of counterbore 14 to be processed；Milling cutter rotation is controlled, workpiece to be processed is processed 13；According to the opposite direction withdrawing of direction of feed；It removes workpiece to be processed 13 and unloads lower milling cutter.By adjusting design eccentricity value, Keep the processing diameter for the via diameter counterbore equally to be processed for being directed to workpiece to be processed different or the via hole of workpiece to be processed The different counterbore to be processed processing diameter of diameter is the same or the different counterbore to be processed of via diameter of workpiece to be processed plus The different situation of work diameter is applicable in.

The above is only the preferred embodiment of the utility model, not imposes any restrictions to the utility model, all According to the utility model technical spirit any simple modification, change and equivalent transformation to the above embodiments, still fall within The protection scope of technical solutions of the utility model.

Claims (9)

1. a kind of anti-milling cutter in bottom surface, which is characterized in that including be mounted on milling machine knife bar, knife fan-shaped on knife bar is set Disk, cutterhead are provided with the blade of changeable cutting angle size on the periphery of knife bar side and what is be connected with cutterhead is used to cut off The cutter of cutting swarf, cutter can be swung relative to cutterhead, and the double thread structure for chip removal, cutter and blade are provided on cutter The distance between be 13 ~ 15 centimetres, the central angle of fan-shaped cutterhead is 180 ~ 270 degree.

2. the anti-milling cutter in a kind of bottom surface according to claim 1, which is characterized in that double thread structure is by trapezoidal thread and three Angular screw thread composition.

3. the anti-milling cutter in a kind of bottom surface according to claim 2, which is characterized in that the tooth of trapezoidal thread is tall and big in triangle The tooth of screw thread is high.

4. the anti-milling cutter in a kind of bottom surface according to claim 1 or 2 or 3, which is characterized in that knife rest is provided on cutterhead, Knife rest end is provided with mounting groove and braced wing, and cutter is mounted in mounting groove, and braced wing holds cutter.

5. the anti-milling cutter in a kind of bottom surface according to claim 4, which is characterized in that cutter is hinged on the mounting groove of knife rest Interior, cutter two sides are connect with knife rest by spring.

6. the anti-milling cutter in a kind of bottom surface according to claim 1 or 2 or 3, which is characterized in that cutterhead cutter is arranged in Cutting angle is 40 ~ 50 degree.

7. the anti-milling cutter in a kind of bottom surface according to claim 1 or 2 or 3, which is characterized in that consolidating between cutterhead and knife bar Mode is determined to be threadedly coupled.

8. the anti-milling cutter in a kind of bottom surface according to claim 1 or 2 or 3, which is characterized in that blade is the conjunction of TCMT16 hard Golden blade.

9. the anti-milling cutter in a kind of bottom surface according to claim 1 or 2 or 3, which is characterized in that the material of knife bar is 40Cr.