CN86200304U - Mechanical indexing unit with single handle - Google Patents

Abstract

The utility model discloses a mechanical interval circular indexing unit, which is operated by single handle and controlled by single cam. The mechanical interval circular indexing unit is operated by the single handle, which makes all functions of the indexing disk completed in sequence, such as loose, taper, indexing, latch, and brake tightly. The utility model can be used for the machine processing, and also used for the equant indexing (also not equant) of the platform scribing and other professions. Only one cam is used in the driving gear. The utility model has the advantages of simple structure, less parts, small size, light weight, low cost, and flexible operation. Besides, the operation power of the handle is small, which relieves the labor strength of the workers and improves the labor productivity.

Description

Mechanical indexing unit with single handle

The utility model relates to a kind of armstrong's patent indexing device.

At present, the armstrong's patent indexing device has two big classes, the first is the indexing means (being applicable to continuous division) of indexing component with the worm gear, it two is to be that the indexing means of indexing component (is applicable at interval calibration with the index dial, the equation graduation the most generally of usefulness wherein), only study the latter here.

Current known armstrong's patent is indexing device at interval, the imitative external product of China and the FN series and the serial direct dividing head of FNL (there are drawing and material object in Yantai Machine Tool Fitting Factory) that manufacture and design are by handle for example, main shaft, index dial, fastening screw, composition such as cam mechanism and supporting base, can operate by monolever, order is finished unclamping of index dial, pull pin, calibration, the latch (location) and the tight action of stopping, have 24 five equilibrium locating slots on the index dial, can make main shaft carry out 2,3,4,6,8,12, the calibration of 24 each five equilibrium, but its cam mechanism is made up of three driving cams, control each action respectively by three cover transmission devices, needs for interlocking and coordination, be provided with some interlocking mechanisms again between these three cams, for making interlocking effectively, some position needs to join when assembling and repaiies processing on the part, cause the complete machine structure complexity, part is many, make trouble, the cost height, volume is big simultaneously, the big matched host machine service behaviour (as being used in the moving range that influences platen on the lathe) that influences of weight, again because the part that rotates together with handle is many, stick control power is bigger, strengthened operator's labour intensity, improved little for many years always.

The utility model is to have done improvement at above-mentioned shortcoming, tries hard to simplify the internal structure of an organization greatly, reduces manufacturing cost, reduces volume, reduces stick control power, to raise labour productivity.

The utility model has been inherited the advantage of prior art, use the monolever operation can finish unclamping of index dial in proper order, pull pin, calibration, the latch (location) and the tight action of stopping, complete machine is by handle, main shaft, index dial, fastening screw, part such as cam mechanism and supporting base constitutes, its main points are to include only on the said cam mechanism that a driving cam (for example cylindrical cam) and one matches, can convert the variation of cam curve to latch extracting and inserting in proper order, index dial is stopped tight and is unclamped the transmission mechanism of action, get final product operate as normal, its index dial can make non-five equilibrium, but with the most use is to make the equation graduation dish with 24 five equilibrium grooves, can make main shaft obtain 2,3,4,6,8,12, the usefulness of 24 each equation graduation, said transmission mechanism also can be simplified to and include only a part (above driven little cam and a gear are arranged).

Accompanying drawing has provided structure of the present utility model, comprising stroke limit axle (1), stroke buting iron (2), buting iron locating hole (3), handle (4), main shaft (on a ratchet is arranged) (5), ratchet (6), transmission mechanism (7) (on a driven little cam and a gear are arranged---be made of one), index dial (8), fastening screw (9), supporting base (10), cam mechanism (11), spring (12) and banking pin (13).

Its operation principle is as follows:

Be shaped on a ratchet on the main shaft (5), driving cam (11) is enclosed within on the ratchet, ratchet (6) is contained on the cam, index dial (8) is fixed on the main shaft by key, operating grip (4) is contained on the cam, when handle was among the figure solid line position, fastening screw～(9) just had been inserted in the indexing trough of index dial, and index dial is in the location and the tight state of stopping.When needing calibration, earlier handle is rotated counterclockwise, cam rotates thereupon, ratchet slides on ratchet, cam curve (A) partly just contacts with little cam on the transmission mechanism (7), and, along with rotating counterclockwise of cam, the sweep of cam contact point is successively decreased, and this moment, little cam was loosened, and can do trace and clockwise rotate, thereby removed little cam by the gear on it, latch is to the pressure (it is tight promptly to force to stop) of index dial, (gears engaged on tooth bar and the transmission mechanism is arranged on the latch) is when cam (B) section curve contacts with little cam, because curve is steeper, little cam is forced to clockwise rotate, drive latch and overcome spring (12) resistance, withdraw from the five equilibrium locating slot of index dial, thereby finished unclamping and the action of pulling pin of index dial.At this moment, stroke buting iron (2) retaining on the cam is on locating shaft (1), it is motionless that handle also changes, again handle opposite direction (clockwise) is moved, then the ratchet on the cam drives ratchet (being main shaft) run-in synchronism, make index dial finish the calibration action, when (B) section curve on the cam and little cam coupling, little cam is loosened, fastening screw is able to fall into again under the spring force effect on the index dial in the locating slot, and latch drives little cam by its upper rack again and rotates counterclockwise, and little cam and driving cam are kept in touch, at this moment, by a projection inclined-plane on the supporting base (10) ratchet is lifted, cam and ratchet are thrown off, latch is lived the position surely so that index dial is positioned, when stopping operating, cam also can be rotated further.When (A) section curve clockwise rotates on the cam, strengthen gradually with little cam contact point place sweep, force little cam further to rotate counterclockwise, then latch is pressed in the locating slot of index dial, thereby has finished the location of index dial and stopped tight action.In order to obtain different five equilibrium effects, the stroke buting iron can be contained in the different locating holes and realize (for example the stroke buting iron being loaded in the locating hole (3), can realize 8 equation graduations), offside because of inertia when the calibration in order to prevent index dial, latch is inserted not advance locating slot and slipped up, can on supporting base, adorn a banking pin (13), when index dial is in the position that needs the location, be subjected to the damping of banking pin.

If when needing non-equation graduation, index dial can be made non-five equilibrium or change different angles by handle and realize.

The utility model is simple in structure, only have 23 basic parts (except outsourcing piece, the standard component), former FNL series direct dividing head then has 68 of bare bones, part basically needn't repair during manufacturing, thereby has reduced significantly manufacturing cost, has reduced small product size, enlarged the matched host machine scope of application, simultaneously handle power has also reduced, and uses lightly, can raise labour productivity. But this device horizontal-vertical double-purpose. Mix top, chuck, floral disc can replace dividing head and rotary table to use.

Claims (3)

1, a kind of monolever operation, can finish the loosening of index dial in proper order, pull pin, calibration, latch (location) and the mechanical separation indexing device of tight action of stopping, form by handle [4], main shaft [5], index dial [8], fastening screw [9], cam mechanism [11] and supporting base [10] etc., it is characterized in that said cam mechanism includes only that a driving cam [11] and one matches, in order to the variation of cam curve is converted to the reeve of latch and extracts, the transmission mechanism [7] of stop tight and the loosening up of index dial.

2, mechanical separation indexing device according to claim 1 is characterized in that said driving cam is a cylindrical cam.

3, mechanical separation indexing device according to claim 1 and 2 is characterized in that said transmission mechanism, only constitutes (above a driven little cam (7) and a gear (10) are arranged) by a part.

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