JPH0674242U - Stepless variable clamp tool - Google Patents

Abstract

(57) [Abstract] [Purpose] Improved the clamping tool used to fix the material to be machined on the machining table of the machine tool so that it can be used easily and without hindrance. To do. A clamping tool for fixing a work piece on a machining table of a machine tool, the clamping tool having at least one base unit, which is provided with one casing, and the casing is mounted on the machining table. It can be fixed by fixing means such as screw bolts, has one notch on one side, and has a pressure arm that penetrates the notch of the casing and projects freely, and this arm is free on the outside. Having a pressure shoe at the end that rests on the work piece, and at its inner end it is rotatably supported in the casing and swings in this position by the action of the spintor drive. Is possible, and the casing of the base unit uses the rotary tool unimpeded due to the screw bolts at least in the upper part of the notch. A continuously variable clamping tool that is formed in a greatly retracted shape so that it can be.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a continuously variable clamping tool suitable for fixing a material to be machined to a machining table of a machine tool.

[0002]

[Prior art]

 Known clamping tools of this kind consist of at least one base unit.

This unit can optionally be connected to a block for increasing the height of one or more heights in order to increase the height of the clamping position of the clamping tool as required and desired.

In this case, the base unit has a casing, and this casing is provided with fixed means, for example screw bolts, for example on a drilling machine, milling machine or other machining table, or on another plate, for example a perforated raster. It can be fixed to a plate or the like.

A cutout is provided on one side of the casing, and the pressure arm penetrates in such a manner that the cutout is freely projected.

The pressure arm has at its outer free end a pressure shoe which is located above the material to be machined.

At its inner end, the pressure arm is rotatably supported in the casing and, in this position, in the casing, a toothed rim provided at the inner end of the pressure arm. It can be swung by a spindle drive that meshes with the segment.

The known constructions of such clamping tools are entirely able to fulfill the clamping function intended for them, but on the contrary they have some disadvantages in practice.

[0009] This disadvantage is especially associated with the fact that they are often cumbersome to handle and require a great deal of force, and that they are fastened to the current processing table or hindered without hindrance to movement. That is, it is impossible to continue in blocks to increase the size.

[0010]

[Issues to be solved by the device]

 In order to solve the above disadvantages, the present invention provides a tool that can be used easily and without any hindrance to the operation.

[0011]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention has the following configuration. That is, such a clamping tool according to the present invention is a clamping tool for fixing a work piece on a machining table of a machine tool, which has at least one base unit and which is provided with one casing. Moreover, this casing can be fixed on the processing table by fixing means such as screw bolts, and has one notch on one side, and a pressure arm that penetrates the notch of the casing and freely projects. And this arm has at its outer free end a pressure shoe which rests on the work piece, and at its inner end it is rotatably supported in the casing and at this position. It is possible to swing by the action of the spintor drive unit, and the casing of the base unit has screw bolts at least above the notch. It is characterized in that it is formed largely retracted shape as can be used without being inhibited rotating tool.

[0012] A more advantageous configuration for this is as set forth in the second and subsequent claims.

[0013]

[Action]

 In the clamping tool according to the present invention, the casing of the base unit is largely retracted at least above the notch.

This makes it possible to operate the screw bolt without impairing the use of the rotary tool without impairing the main function of the clamp tool.

The fixing of the clamping tool can be done in any desired way, especially since a rotating tool, for example a fixed spanner for turning screw bolts, can be used in a substantially vertical position.

As a result, the material itself to be fixed does not get in the way.

Another advantage when the clamping tool is designed according to claim 2 is that it is easier to use the rotary tool in a vertical position due to the ease of using the rotary tool on the head of the screw bolt. Is born.

If the design of the casing is made according to claim 3, it is possible for the height of the casing of the base unit to be particularly low.

This also makes it possible to machine particularly flat material pieces, and at the same time the pressure arm moves the maximum possible clamping distance.

When the clamping tool is designed according to claim 4, the support of the screw bolts is carried out on a replaceable pressure plate.

The pressure plate has matching guide holes for selectable fixing bolt diameters, and the pressure plate itself can be inserted into a guide groove on the side under the notch of the casing. I can.

This method makes it possible to avoid damage to the front casing opening as well as the side casing cutouts, and this helps to prolong the life of the clamping tool.

It is desirable to simplify the design by making the pressure plate U-shaped.

When designing the clamping tool according to claim 6, it is possible for the casing to have an inwardly projecting stop near the upper end of the notch, which allows the downward swinging distance of the pressure arm. The advantage of being limited is born.

This stopper can act on the first tooth of a toothed rim segment provided around the end of the pressure arm carried in the casing, in particular around its position.

In a preferred embodiment, a single pin is used for this stopper, and this pin is externally inserted into the head of the casing, the insertion method being in particular a press-fitting or screwing-in method. Can be used.

The design of the clamping tool according to claim 8 is advantageous when the base unit has to be connected to a block for increasing the height in order to increase the clamping height of the clamping tool.

In this case, the casing of the base unit has a groove on its lower side that runs parallel to the pressure arm for mounting the guide protrusion, and this guide protrusion can be connected to the base unit. It is provided on the upper side of the block to increase the height.

With this, when the block for increasing the height is connected to the base unit, the guide in the direction of the screw bolt automatically works, and at the same time, the lateral restraint is guaranteed particularly when it is easily attached. Will be.

Of course, the lower groove of the base unit and the upper guide projection of the block for increasing the height are of a suitable shape, for example the Hatao set, in order to easily and reliably perform the above functions. Can be designed with.

Even in the block for increasing the height at any given time, the form of the front part and / or the side surface of the casing is obstructed by the rotary tool for the screw bolt for fixing the block for increasing the height on the working table. It is designed so that it can be used in a vertical or near-vertical position without being damaged.

With respect to supporting the screw bolt in the casing, the block for increasing the height also has a design similar to the base unit, and in this case details are given in claim 11.

This means that the head support of the screw bolt is likewise carried on a replaceable pressure plate, which has suitable guide holes for the selectable screw bolt diameter and This means that damage to the casing opening can be prevented.

The pressure plate itself can be inserted into the side guide groove in the lower part of the side casing notch of the block for increasing the height.

As noted above, this design eliminates the need for T-grooves for guides and support screws for restraint.

[0036]

【Example】

 The clamping tool shown in the drawing has at least one base unit 1 and this can be connected to at least one block 2 for increasing the height, thereby increasing the clamping position of the clamping tool. I can.

The base unit 1 of the clamping tool is provided with a casing 3 and this casing has a notch 4 on one side thereof.

A curved pressure arm 5 penetrates through this casing notch 4 and is hingedly supported at its outer free end in order to hold a material which is not described in detail. A pressure shoe 6 is provided.

The pressure arm 5 is rotatably supported in the casing 3 at its inner end.

For this purpose, the pressure arm has a bearing hole 7 in its larger end, as can be seen in more detail in FIG. 7, and in which two matable bearings are mounted. Collars 8 and 9 are inserted.

The bearing collars 8 and 9 themselves are provided in the casing holes 10 on the side surfaces, and they are securely fixed to each other by the bearing screws 11 screwed into the bearing collars 8.

The inner end of the pressure arm 5 supported by the casing 3 is provided with a toothed rim segment 12 on its outer circumference, as can be seen from FIGS. 1 and 7, and this segment Engages with the spindle drive of a pressure spindle 13 which is supported on the rear of the casing 3 in a substantially vertical position.

The pressure spindle 13 is supported in the casing 3 by a spindle bearing 14 and a spindle guide bush 15 and is rotated by a clamp T-handle 16 mounted on an appropriately shaped end of the pressure spindle 13. Be punished.

In this way, the pressing arm 5 can appropriately position the play position A on the upper side of FIG. 1 and its pressing shoe 6 on the material to be processed and securely hold it on the processing table. It can swing with B.

The swinging distance of the pressure arm 5 is limited to the lower side by a stopper, and this stopper has the shape of a pin 18 and its position from outside near the upper end of the notch 4 of the casing. Of the casing head is inserted by deep-pressing or screwing so that it projects inward.

This allows the first tooth 19 of the toothed rim segment 12 to hit the pin 18 when the pressure arm 5 is swung downwards, and in this way the downward swing distance of the pressure arm 5 is limited. .

The fixing of the clamping tool to the machining table of the base unit 1 or to the block 2 for increasing the height is carried out by means of screw bolts 20 and the heads 21 of the bolts are located below the casing notch 4 in the area. Located in.

For this purpose, the notch 4 of the casing is provided with an extension 22 at the lower side thereof.

The head 21 of the screw bolt 20 is set on a special pressure plate 23 in order to avoid damage at the front casing opening, ie at the casing notch 4.

This pressure plate is, as is apparent in FIG. 7, a casing plate for fixing a pressure plate 23 having a U-shaped design with a precisely sized opening 24 for receiving the head 21 of the screw bolt. A guide groove 25 on the side surface is provided in the lower portion of the notch 4, and the pressure plate 23 can be inserted into the guide groove 25 from the outside with the opening 24 facing outward.

After that, the screw of the screw bolt 20 whose head 21 is placed on the pressure plate 23 is screwed into the corresponding groove of the processing table by using the sliding block 26.

The casing 3 of the base unit 1 has its cutouts in order to allow the screw bolt 20 to be easily tightened by means of a suitable rotary tool 27, in the example shown by a hexagonal screwdriver. It has a large receding design in the upper area of 4.

As a result, as can be clearly seen in FIGS. 1 and 2, the rotary tool 27 can be fitted almost vertically into the head 21 of the screw bolt 20 without being disturbed and can be tightened. Is.

The base unit 1 of the clamping tool, which is further described in this unobtrusive tightening possibility, has an extension 22 at the bottom of the notch 4 in the casing, whereby The ability to freely approach the top surface of the head 21 of the screw bolt to be inserted is very useful.

In order to be able to connect the base unit 1 of the clamping tool to the block 2 for increasing the height on the lower side, the casing 3 of the base unit 1 is parallel to the pressure arm 5 on the lower side. It is provided with a groove 28 that travels to.

This groove can guide and / or hold a guide projection 29 mounted on the upper side of the casing 30 of the block 2 for increasing the height during the connecting operation.

The casing 30 of the block 2 for increasing the height has a screw hole 31 in its upper front part, and this screw hole is provided with its head 21 in the manner described above for the casing 3 of the base unit 1. The screw bolt 20 fixed inside is screwed.

From this it can be clearly seen from FIG. 6 that the base unit 1 is connected to the block 2 for increasing the height reliably and without slack.

In this state, the entire clamping tool, which is composed of the base unit 1 and the block 2 for increasing the height, is set on the machining table by another screw bolt 20, and this screw bolt is likewise attached to the base unit 1. Like the screw bolt 20, it is placed on a replaceable pressure plate 23.

This pressure plate has a U-shaped design with an opening 24 into which a screw bolt head can be inserted, and below the notch 32 of the casing on the side surface of the block 2 for increasing the height. It can be inserted into the side guide groove 25.

Even in the casing 30 of the block 2 for increasing the height, since the rotating tool fitted into the head 21 of the screw bolt 20 can be used without being disturbed, the casing 30 is It can be easily seen from the drawing that the side surface is designed to retract.

This allows the rotary tool 27 to be used almost vertically and tightened, as can be seen from FIGS. 3 and 4.

Reference should be made to the other features of the above invention, which have not been described in detail in the drawings and in the claims.

[0064]

[Effect of device]

 As is clear from the above description, the clamp tool according to the present invention is an improvement of the known clamp tool for machine tools, is easy to handle, and has difficulty in mounting the block tool for increasing the height. It became possible without it.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of a base unit of a clamp tool.

FIG. 2 is a partially sectional front view of a base unit of the clamp tool.

FIG. 3 is a side view of a block for increasing the height of the clamp tool.

FIG. 4 is a front view of the block of FIG.

FIG. 5 is a schematic view of the base unit of the clamp tool and a block in order to increase the height of the block in a disassembled state.

FIG. 6 is an assembly diagram of the block and unit of FIG.

FIG. 7 is an exploded view of the clamp tool.

[Explanation of symbols]

 1 Base Unit 2 Block 3 Casing 4 Cutting Blow 5 Pressure Arm 12 Toothed Rim Segment 20 Screw Bolt 30 Casing

Claims (11)

[Scope of utility model registration request] 1. A clamping tool for fixing a workpiece on a machining table of a machine tool, the clamping tool having at least one base unit, which is provided with one casing, and the casing is on the machining table. Can be fixed by a fixing means such as a screw bolt, and has a notch on one side and a pressing arm penetrating the notch of the casing and protruding freely, and this arm has an outer side. Has a pressure shoe mounted on the work piece at its free end, and is supported at its inner end in a casing so that it can rotate, and swings at this position by the action of the spintor drive unit. The casing of the base unit can be used unimpeded by the rotary tool due to the screw bolts at least in the upper part of the notch. A stepless variable clamping tool characterized in that it is formed in a largely retracted shape so that it can be performed. 2. The casing according to claim 1, wherein the casing is formed so as to have an extension portion protruding at a lower portion of the notch, and a head of a screw bolt for fixing the casing is fitted into the extension portion. Clamp tool. 3. The casing has a relatively low height.
Clamping tool described in. 4. The head of the screw bolt rests on a pressure plate with a separate suitable opening and is tightened, and this pressure plate can be inserted into the side guide groove under the notch of the casing. The clamp tool according to any one of claims 1 to 3. 5. The clamping tool according to claim 4, wherein the pressure plate is substantially U-shaped. 6. The casing is provided with a stopper projecting inwardly in the vicinity of the upper end of the notch, and the stopper is provided at the end of the pressure arm supported in the casing, in particular at the position outside the outer circumference. 6. The clamping tool according to claim 1, wherein the clamping tool is configured to limit the downward swing distance of the pressure arm by interfering with a toothed rim segment provided. 7. The clamping tool according to claim 6, wherein the stopper is a pin, and the pin is externally inserted by a method of press fitting or screwing into the casing head. 8. The casing of the base unit runs parallel to a pressure arm for fitting a guide protrusion provided on the upper side of the block for increasing the height below which the casing can be connected to the base unit. The clamping tool according to any one of claims 1 to 7, which has a groove to be formed. 9. The clamping tool according to claim 8, wherein the block for increasing the height has a screw hole for screwing the screw bolt of the base unit on the upper side of the front portion thereof. 10. The caging of the block for increasing the height is such that the screw bolts used for fixing the block for increasing the height can be tightened without being disturbed by a rotary tool. The clamp tool according to claim 8 or 9, wherein the clamp tool is formed in a shape in which the portion is retracted. 11. The head of the screw bolt used for fixing the block for increasing the height is mounted and tightened on a pressure plate having a separate appropriate opening, and the pressure plate is for increasing the height. Clamping tool according to any one of claims 8 to 10, which can be inserted into a guide groove on a side of the casing of the block of the block under the side notch.