Attachment point of mine cutting tool

FIELD: mining.

SUBSTANCE: attachment point of mine cutting tool consists of holder, secured on executive device, of cutter with cone cutting part and rotating shank end secured in holder. The attachment point of the mine cutting tool is equipped with a swinging mechanism kinematically coupled with the shank end of a cutting insertion and made in form of a mechanical trigger facilitating a swivel of the cutter around axis. Also the cutting insertion swinging mechanism corresponds to three bushings inserted one into another and equipped with radial lugs axially tapered on ends.

EFFECT: increased resource of mine cutting tool and reduced power consumption for cutting.

6 dwg

 

The invention relates to mining machines, and more specifically to the attachment points Honorius tool on the Executive of mining machines, and may find application in mining and tunneling machines, plow installations and other rock mining machines.

Known fasteners Honorius tool, made in the form of the tool holder (fist) and fastened on her cutter (cutting insert comprising a cutting part, the reinforced plates of hard metal, and shank. Thus the shank of the cutter is in a holder for a conical or cylindrical surface. For example, the mount plow cutting tool /1/ (Mountain tools / Mggramisel, Ijarah, Niiai. M; "Nedra", 1990, p.32). The wear of the cutting part of the cutter on the rear face limits the duration of its operation and determines whether to use the cutting insert with dullness (up to the limit value), while increasing the specific energy of cutting, increase of cutting force and feed.

Several advantages, has the mount Honorius tool with removable cutting insert having a shank and a tapered cutting edge. Such cutting inserts can be rearranged in the tool holder rotated by increasing resource of the cutting tool, reducing the cutting forces and specific energoemko and cutting, providing samstock cutting part.

Also known attachment Honorius tool in the tool holder which carries a cutting insert with a possibility of rotation, and the shape of its cutting part has a cone shape. For example, the mount with automatic rotating cutter containing a gear sleeve with the cutter 121 (U.S. Patent No. 3833265). Due to the presence of the toothed sleeve interacting with a mass of rock, is the rotation of the cutter during operation of the mining machine and its samosatene. However, the use of toothed sleeve increases the total load on the holder and causes an additional increase of friction losses. This is the automatic rotation of the cutter is operable only when the cutters on the Executive bodies of the rotary type (for example, in the form of a crown or screw), as the surface interaction of the toothed part of the mechanism with the breed are necessary for reversal of the cutter angle. In the case of the use of such technical solutions on planes rotation of the cutter is not provided due to the lack of torque interaction of the gear sleeve and cutter with the coal face.

This solution accepted by us for the prototype. The aim of the invention is the reduction of energy consumption for cutting and increased resource Honorius tool.

the left goal is achieved by the mount Honorius tool is equipped with a rotation mechanism kinematically connected with the shank of the cutting insert and is designed as a mechanical trigger, enabling rotation of the cutter about an axis by pressing the cutting edge of forces from a face.

In the embodiment, the rotation mechanism of the cutting insert is made in the form of nested into each other three bushings is provided with radial projections, ending with axial bevels (the mechanism used in ballpoint pen). The inner sleeve is spring-loaded and kinematically connected with the shank of the tool, the bevel of the inner and outer sleeves, middle and outer sleeves are pairwise response-oriented, and the radial projections of the middle and inner sleeve nested radial protrusions in the outer sleeve.

The invention is illustrated by drawings, where:

figure 1 - the device in disassembled form;

figure 2 - cut it to 1 along a-a;

figure 3 - cut it to 1 on b-B;

Fig 4 - sections in figure 1 In-In;

figure 5 shows schematically the attachment Honorius tool that provides automatic rotation of the cutter from cutting forces;

Fig 6 is a diagram of the interaction of the projections of the sleeves.

The mount Honorius tool, comprising a holder (fist) 2 mounted on the Executive body of the mountain is down; a cutter having a tapered cutting portion and a shank 1, which are secured in the holder with the possibility of rotation. On the shank of the cutter 1 has an annular groove 3, which introduced spin the screw 4, so the cutter can rotate freely around its axis. As the width of the groove 3 greater than the thickness of the screw, the shank of the cutter 1 may be displaced along its axis. On the shank of the cutter 1 and the holder 2 is made of hard mating surfaces 5 and 6 and the end portion of the shank is made on channel 7 with a square cross section. Inside channel 7 entered with a small radial clearance rod with a square cross-section 8. This rod 8 is a continuation of the outer bottom stenobrachius sleeve 9, provided with four radial projections 10, which is made of the axial (along the axis of the sleeve) bevels 11 at an angle of 45. The sleeve 9 is spring-loaded inside the spring 12, which rests on the saddle 13 and the adjusting screw 14, screwed into the casing 15 and is locked by a lock nut 16. The sleeve 9 is placed inside the sleeve 17. The latter is equipped with eight radial projections 18, the end portion 19 opposite sides which are slanted at an angle of 45. Inside the sleeve 17 is mounted washer 20. The sleeve 17 is placed inside the sleeve 21, is equipped with eight axial slits 22 with bevels 23 at an angle of 45 and fixed in the housing 15 by screws 24 and 25. Between the holder 2 and the housing 15 are re the new gasket 26, protecting the internal cavity of the housing 15 from pollution, and between the shank of the cutter 1 and the sleeve 17 is laid washer 27. Between the sleeve 17 and the sleeve 9 is mounted a spring 28, which is weaker than the spring 12. The bevels 23 and outer bevels 11 internal bushings, bevels the end parts 19 average and bevels 11 internal bushings response-oriented, so that axial movement of the bevel interact with each other. The radial projections 18 middle and radial projections 10 of the inner bushing is enclosed between the radial protrusions of the outer sleeve in axial slits 22. In the assembled device status progress G holder 1 until it touches the stop faces 5 and 6 is less than the turn On the washer 20 to the sleeve 9, the process of D greater than the height E of the projections 10, and the height W of the axial slits 22 more progress D. Width from the wall of the ring groove 3 to the screw 4 more progress G, and move On more of the stroke And the bottom of the channel 7 to the rod with a square cross-section 8.

The above mechanism in the form of nested into each other three sleeves, made with radial and axial protrusions bevels, is essentially a mechanical trigger device, triggered by pressing and free during the reverse movement. In the present mount Honorius tool rotation mechanism can be made to other similar mechanism, for example one of the mechanisms used in the balloon is the same handles.

Works claimed by attachment Honorius tool as follows. In the initial state, when the cutter cooperates with the coal face, parts of the device occupy the position depicted in Fig 5. During the interaction of the cutter with the bottom along the axis of the cutter creates a force that moves the cutter with shank 1 into the holder 2, the arrow To the stroke of G, then the force from the bottom is perceived by the holder 2 through the surface 5 and 6, and is force closure of the shank 1 cutter with shank 2. Thus the shank of the cutting tool 1 moves the sleeve 17, which protrusions 18 presses the protrusions 10 of the sleeve 9 beyond the axial section 22. Under the action of the spring 12 bevels 11 slide on the annular part 19, and the sleeve 9 tends to rotate around its axis, choosing a small gap between the rod with a square cross section 8 and the channel 7 in the shank 1 of the cutter.

Because the spring 12 is sandwiched by the cutting force, the rotation of the cutter about its own axis does not occur. When the recession efforts to the cutter, for example, when did the Department of array coal from the face, the force of the spring 12, the sleeve 9 is sent forward and the bevel 11 of its projections 10 slide bevels 23, carrying the rotating rod with a square cross section 8 and the shank of the cutter 1 around its axis. The spring 28 returns the sleeve 17 to its original position, and the tabs 18 go in and soalnya sections 22 together with the tabs 10; the sleeve 9 completes the rotation of the shank of the cutter 1 around its axis. When you move the shank of the cutter from the efforts and subsequent removal of the efforts described the process of rotation of the cutter about the axis repeats. The screw 14 can adjust the force of rotation of the shank by changing the degree of compression of the spring 12.

As the process of cutting rocks characterized stochastically alternating large and small chips, cutter, compressing the spring at the time of major cleavage leads to the mechanical actuation of the trigger, after the decline of the efforts of the cutter is shifted to its original position and rotated. The magnitude of the elastic indentation of the cutter in the holder to ensure tripping of the mechanism of rotation of the cutter is 3-5 mm For most rock cutting machines is the magnitude of the fluctuations of the average depth of cut that has no noticeable effect on the cutting process. The work of the proposed mount Honorius tool provides automatic rotation of the cutter, which determines the number of its advantages. Since the surface of the carbide reinforcement wears out from all sides, the process is too dull to extreme sites longer, cutting forces - less, the specific energy of cutting - less, the life of the cutter is more specific consumption of cutters per 1 ton of production - less downtime for replacement cutting the instrument - less. Uniform wear of the conical cutting end of the cutter helps to improve its reliability.

Literature.

1. Mggramisel. Mountain instruments [Text] / Mggramisel IA,Crayfish, Niiai. M: "Nedra", 1990, p.32.

2. U.S. patent No. 3833265.

The mount Honorius tool, comprising a holder-fist mounted on the Executive body, the cutter having a tapered cutting portion and a shank mounted in the tool holder with the possibility of rotation, characterized in that the attachment Honorius tool is equipped with a rotation mechanism kinematically connected with the shank of the cutting insert and is designed as a mechanical trigger, enabling rotation of the cutter about the axis, and the rotation mechanism of the cutting insert is made in the form of nested into each other three bushings is provided with radial projections, ending with axial bevel.



 

Same patents:

FIELD: mining.

SUBSTANCE: equipped with round shank end cutter is held by means of slit clamping sleeve in aperture of cutter holder and is designed to rotate. Also the clamping sleeve is equipped with holding elements stamped and/or pressed inside; the elements are distributed along perimetre of the clamping sleeve and enter into a circular slot made in the round shank end. Two stamped edges directed across lengthwise axis of the clamping sleeve isolate holding elements. Also stamped edges run along part of perimetre of the clamping sleeve and are arranged at distance one from another corresponding to width of the circular slot in the round shank end of the cutter. Notably, the holding elements form coaxial concave centring section facing the convex bottom of the circular slot.

EFFECT: increased operation life of cutter due to increased reliability of fastening.

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FIELD: mining.

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FIELD: mining.

SUBSTANCE: attachment point of mine cutting tool consists of holder, secured on executive device, of cutter with cone cutting part and rotating shank end secured in holder. The attachment point of the mine cutting tool is equipped with a swinging mechanism kinematically coupled with the shank end of a cutting insertion and made in form of a mechanical trigger facilitating a swivel of the cutter around axis. Also the cutting insertion swinging mechanism corresponds to three bushings inserted one into another and equipped with radial lugs axially tapered on ends.

EFFECT: increased resource of mine cutting tool and reduced power consumption for cutting.

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5 dwg

FIELD: mining industry, particularly for mining operation and construction and repair work performing.

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Tool holder // 2334105

FIELD: mining.

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FIELD: mining.

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EFFECT: increased operation life of cutter due to increased reliability of fastening.

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FIELD: mining.

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EFFECT: increased resource of mine cutting tool and reduced power consumption for cutting.

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FIELD: process engineering.

SUBSTANCE: invention relates to toll intended for removing cutter from cutter holder. Proposed remover comprises moving base element to receive actuator that has ejection core. Said actuator is directly or indirectly jointed with cylinder-piston or electric drive. Said actuator is arranged on base element to turn about rotary support. In compliance with second version, said ejection core is driven by actuator mechanism. In compliance with third version, said base element is provided with rest section for rest on cutter holder or wear-resistant washer. In compliance with fourth version, ejection core is jointed with flexible element, in particular, to chain. Note here that flexible element is fitted with no lengthwise camber in guide, in particular, tube. In compliance with fifth version, ejection core 65 is driven by fluid 66.3.

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FIELD: mining.

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EFFECT: increase of error-free running time of working elements.

FIELD: process engineering.

SUBSTANCE: invention relates to cutter, particularly, to cutter with round shank comprising cutter head and cutter shank. Note here that fastening bush is retained in the cutter shank zone while said cutter is equipped with thrust element with guide zone. In compliance with this invention, for ease of cutter handling, said thrust element has deflecting section arranged in its zone opposite the cutter head bottom. Said section adjoins the guide zone to allow fastening bush to change from unlocked position to locked position of from partially locked position to locked position. Note also that guide zone extends through rounded flare to aforesaid thrust surface.

EFFECT: perfected design.

13 cl, 6 dwg

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