JPH0448914Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a feed control device used in various machine tools and other automatic machines, and is capable of feeding, returning, and returning workpieces and workpieces by pulse control. It is characterized by being able to perform other positioning control accurately and being easy to manufacture.

[Conventional technology]

As a device of this type, the applicant has proposed a system (Japanese Utility Model Publication No. 21144/1983) in which the rotation of a pulse motor is reduced by a gear, and both ends are fixed to a slider using a parallel timing belt.

[Problem that the invention attempts to solve]

In the conventional device described above, the slider is fitted into a guide rod whose both ends are fixed to one side inside a cylindrical cover.

Therefore, friction between the guide rod and the slider cannot be avoided, and if dirt or the like adheres to the guide rod, frictional resistance increases, making accurate control difficult.

Furthermore, since the guide rod is provided with both ends fixed, when a load or unbalanced load is applied to the feed rod provided from the slider, the guide rod itself becomes deflected, making it difficult to accurately control the feed rod. .

These problems were particularly noticeable when the stroke was long, that is, when the guide rod was configured to be long.

Furthermore, assembling the conventional guide rod with both ends fixed and the slider fitted thereon requires a lot of effort, and the entire device has to be assembled at the same time.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention replaces the conventional use of a guide rod with both ends fixed, and instead provides a guide rail protruding from the internally facing portion of the cylindrical body.

That is, one side of the guide rail is fixed to the cylindrical body, so there is no need to worry about bending.

Furthermore, guide rollers are provided at the front and rear of the slide block, which contact the upper, lower, and inner surfaces of both guide rails, respectively.

Therefore, frictional resistance is eliminated, and accurate control is possible without causing any deviation in the fit of the slide block to the guide rail.

That is, in the present invention, a guide rail is provided to protrude from the inner facing part of the cylindrical body, and a tamping pulley is provided at one end of the cylindrical body, which is rotated by a pulse motor via a reduction gear.
A suspension pulley is provided at the other end of the cylindrical body at a position facing the timing pulley, a timing belt is suspended between the two pulleys, and between the two guide rails, there are belts on the upper and lower and inner surfaces of both guide rails in the front and back, respectively. A slide block having a guide roller in contact with the timing belt is provided, and the slide block is fixed at a proper position of the timing belt, and further,
The structure is such that a movable member is provided that projects outside the cylindrical body.

[Effect]

In the present invention, a pulse motor is used, and the rotation of the pulse motor is decelerated, and the slide block is slid via a timing belt along a guide rail protruding from the inner facing portion of the cylindrical body.

A movable member protruding from the cylindrical body provided on the slide block controls the feeding, return, and other positions of the workpiece and the workpiece.

In the present invention, the guide rail is integrally provided to protrude from the inner facing portion of the cylindrical body.

That is, since only both ends are not fixed as in the conventional case, there is no need to worry about bending.

Furthermore, the guide rollers provided at the front and rear of the slide block are brought into contact with the upper, lower, and inner surfaces of both guide rollers, so that the slide block can be slid accurately without any rattling. .

〔Example〕

Although the cylindrical body 1 of the present invention can be constructed by welding, it is preferably constructed integrally from an extruded aluminum member as shown in the fourth figure.

In addition, in FIG. 4, the guide rails 2, 2a
are configured separately.

That is, guide grooves 3, 3a are integrally formed in the internally facing portions of the cylindrical body 1, and elaborate guide rails 2, 2a made of drawn material such as steel are fixed in the guide grooves 3, 3a with screws 4. , making it easy to manufacture.

However, the cylindrical body 1 and the guide rails 2, 2
a may be integrally constructed, and the accuracy of the guide rails 2, 2a may be improved later by machining.

Note that 1a in the figure indicates slide block 2, which will be described later.
The movable member provided from 2, specifically the slider 2
This is the opening that becomes the passage No. 7.

However, if the movable member is a rod 21 provided at the tip of a slide block 22, which will be described later, the opening 1a is unnecessary.

Next, a timing pulley 6 is provided at one end of the cylindrical body 1 and is rotated by a pulse motor 5 via a reduction gear.

However, in the case of the embodiment shown in the drawings, in order to facilitate assembly, the tamming pulley 6 is provided together with the gear box 7 containing the reduction gear, and the pulse motor 5 is also integrated, and the cylindrical body 1 is It is constructed so that it can be assembled at one end.

Incidentally, the reduction gears in the gearbox 7 are provided on the rotating shaft 5a of the pulse motor 5 in the embodiment shown in the drawings, and include a spur gear 8, spur gears 9, 10, 11, and a bevel gear 12.
and a bevel gear 13 provided on the central axis 6a of the timing pulley 6.

Next, a suspension pulley 14 is provided at a position facing the tamming pulley 6.

The suspension pulley 14 is movable, and the tension of the timing belt 15 suspended therebetween can be adjusted.

To be more specific, both side plates 16 are provided on both sides of the suspension pulley 14 and pivotally support the central axis 14a,
16a and the spacer 17,1 provided therebetween
7a constitutes a support frame 18, and the support frame 18
is movable toward the cap 19 fitted to the tip of the cylindrical body 1.

That is, adjustment screws 20, 20a are screwed into the spacers 17, 17a constituting the support frame 18 from outside the cap 19, so that the support frame 18 can be freely moved toward the cap. Note that 21 in the figure is a movable member, specifically a rod, provided from a slide block 22 which will be described later.

However, in the case of the present invention, a slide block 22 is provided between the guide rails 2, 2a within the cylindrical body 1 prior to the attachment of the cap 19.

The slide block 22 is provided with a guide roller 23 in contact with the upper side of both guide rails 2, 2a, a guide roller 24 in contact with the lower side, and a guide roller 25 in contact with the inner surface of the slide block 22.
Further, the timing belt 15 is fixed to the slide block 22 at an appropriate position.

In the embodiment shown in the drawings, both ends of the timing belt 15 are pressed and fixed to the slide block 22 by presser plates 26.

In the figure, 27 is another movable member provided from the slide block 22, specifically a slider.

In the present invention having the above structure, the internal device and both end devices can be easily assembled from both ends of the cylindrical body. Then, the pulse motor can be pulse-controlled according to the moving distance of the slide block in one pulse rotation of the pulse motor, and the reduction gear and timing pulley are decelerated, and the timing belt causes the slide block to reciprocate along the guide rail. It is dynamically controlled.

[Effect of idea]

According to the present invention, the guide rail that supports the slide block does not support both ends as in the past, but has one side fixed to the cylindrical body, so that load and uneven load are not applied to the movable member. Even if it is bent, no bending occurs and accurate control is possible.Furthermore, with the above configuration, it is extremely easy to assemble.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a cutaway plan view of the main part, FIG. 2 is a cutaway front view of the main part, FIG. 3 is a sectional view taken along the line A-A in FIG. 2, and FIG. 5 is a perspective view of the cylindrical body, and FIG. 5 is a sectional view taken along the line BB in FIG. 2. 1... Cylindrical body, 2, 2a... Guide rail, 5... Pulse motor, 6... Timing pulley, 8, 9, 10, 11... Spur gear, 12, 13
...Bevel gear, 14...Suspension pulley, 15...Timing belt, 21...(Movable member) rod,
22...Slide block, 23, 24, 25...
...Guide roller, 27... (movable member) slider.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A guide rail is provided to protrude from the internally facing portion of the cylindrical body, and a timing pulley rotated by a pulse motor via a reduction gear is provided at one end of the cylindrical body. A suspension pulley is provided at the other end of the cylindrical body at a position facing the timing pulley, a timing belt is suspended between the two pulleys, and between the two guide rails, the top and bottom of the guide rails in the front and rear and the A slide block having guide rollers abutting on the inner surface thereof is provided, the timing belt is fixed at an appropriate position on the slide block, and a movable member protruding outside the cylindrical body is provided. Features: Feed control device for various automatic machines. (2) A device for controlling feed, etc. of various automatic machines as set forth in claim 1, wherein the cylindrical body and the guide rail are made of extruded material. (3) A feed control device for various automatic machines as set forth in claim 1, wherein the guide rail is fixed in a guide groove formed in a body made of extruded material.