CN210908426U - Stride across scalable accurate positioning fixture and spark machine of spark machine stroke limit - Google Patents

Abstract

The utility model discloses a scalable accurate positioning fixture of strideing across spark machine stroke limit, including installing smart location base subassembly and scalable cantilever subassembly on the lathe main shaft, the one end of scalable cantilever subassembly is installed and is used for the finish machining's of part characteristic electric spark machining processing electrode, and the length that surpasss the stroke during processing according to the lathe corresponds the extension length of adjusting scalable cantilever subassembly to accomplish to the part wholeness processing; the telescopic accurate positioning clamp spanning the stroke limit of the spark machine is mounted on a main shaft of the machine tool body. The large-scale over-travel die part can be processed by a small machine and is not limited by the rigid condition of the travel; the length of the cantilever can be manufactured and used in a matched mode according to needs, time is saved when the cantilever is adjusted or replaced once, and working efficiency is improved.

Description

Stride across scalable accurate positioning fixture and spark machine of spark machine stroke limit

Technical Field

The utility model belongs to the technical field of the part anchor clamps, especially, relate to a stride across scalable accurate positioning anchor clamps and spark machine of spark machine stroke limit.

Background

The size of the parts processed by the electric discharge machine is limited by the processing stroke of the machine. When a large-sized die is machined, part of the machining area exceeds the stroke limit, and the machining mode generally adopted is as follows:

1. the position of the die part on a machine tool needs to be moved repeatedly to process the die part (see figure 1 in detail), the processing mode relates to multiple clamping, and the processing efficiency is extremely low;

2. the fixed switching clamp commonly used in the market is adopted for processing, the stroke is fixed, a plurality of pieces are combined and positioned if necessary, and a plurality of switching clamps 13 are utilized for superposition (see figure 2 for details). The positioning error and the clamping firmness of the combination mode are increased along with the increase of the span range, and certain quality and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stride across scalable accurate positioning anchor clamps and spark machine of spark machine stroke limit to solve background art's problem.

In order to achieve the above object, the utility model discloses a stride across scalable accurate positioning anchor clamps and spark machine of spark machine stroke limit's concrete technical scheme as follows:

the utility model provides a stride across scalable accurate positioning anchor clamps of spark machine stroke limit, is including installing smart location base subassembly and scalable cantilever subassembly on the lathe main shaft, the one end of scalable cantilever subassembly is installed and is used for the finish machining electrode of part characteristic electric spark, and the length that surpasss the stroke during processing according to the lathe corresponds the extension length who adjusts scalable cantilever subassembly to the completion is to part wholeness processing.

Furthermore, a square groove is formed in the middle of the fine positioning base assembly, and the telescopic cantilever assembly with the square cross section is inserted into the square groove in a sliding mode to achieve cantilever extension adjustment.

Further, fine positioning base subassembly is including offering the first fine positioning body in square groove, scalable cantilever subassembly includes that the cross section is square adjustable cantilever.

Furthermore, a first fixing bolt is installed on the side wall of the first fine positioning body and is rotatably abutted to the side wall of the adjustable cantilever through the first fixing bolt, so that locking and positioning after the length of the cantilever is adjusted are realized.

Furthermore, a second fixing bolt is installed on the bottom wall of the first fine positioning body, and the second fixing bolt is rotated to abut against the bottom of the adjustable cantilever, so that further locking and positioning after the length of the cantilever is adjusted are realized.

Furthermore, the fine positioning base assembly comprises a positioning accessory which is in threaded connection with the end face of the first fine positioning body, and the positioning accessory is detachably and fixedly connected with the main shaft of the machine tool.

Furthermore, the end, far away from first smart location body, of adjustable cantilever is connected with second smart location body, and the lower extreme of second smart location body is connected with the processing electrode that is used for the finish machining of part characteristic electric spark.

Furthermore, the second fine positioning body is in threaded connection with the adjustable cantilever through a second fixing bolt.

Furthermore, the upper end of the processing electrode is provided with a positioning column with a side plane cut surface, the second fine positioning body is vertically provided with a middle hole cavity, the second fine positioning body is transversely provided with a threaded hole, and the locking positioning is realized by rotating the screw-in locking rod in the threaded hole to abut against the side plane cut surface of the positioning column.

A spark machine comprises a machine tool body, wherein the telescopic accurate positioning clamp spanning the stroke limit of the spark machine is mounted on a main shaft of the machine tool body.

Compared with the prior art, the utility model discloses following beneficial effect has:

the design is under the condition of low input cost;

1. the large-scale over-travel die part can be processed by a small machine and is not limited by the rigid condition of the travel;

2. the part placing distance does not need to consider the stroke of the switching clamp, the extending length is adjusted in a lean mode, and the processing precision and the processing efficiency are maximized;

3. the quick adjustment and positioning can be realized only by loosening and locking the bolt;

4. the structure is simple, the design is exquisite, and the overall weight is reduced by about 30% compared with that before the improvement (see the middle hollow part of the adjusting cantilever of the part 8 in fig. 3 in detail);

5. the length of the cantilever can be manufactured and used together according to the requirement, and only 2 minutes is needed for single adjustment or replacement.

Drawings

FIG. 1 is a schematic view of a conventionally machined part;

FIG. 2 is a schematic view of a prior art clamp modified by one skilled in the art;

fig. 3 is an exploded view of the clamp of the present invention;

FIG. 4 is an assembly view of the clamp of the present invention;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a cross-sectional view B-B of FIG. 5;

fig. 7 is a schematic view of the clamp of the present invention used in a machine tool.

The reference numbers in the figures illustrate: the machining device comprises a machining electrode 1, a first fixing bolt 2, a second fixing bolt 3, a third fixing bolt 4, a positioning accessory 5, a first fine positioning body 6, a second fine positioning body 7, an adjustable cantilever 8, a locking rod 9, a machine tool machining table 10, a part to be machined 11, a machine tool spindle 12 and a switching clamp 13.

Detailed Description

For a better understanding of the objects, structure and function of the invention, reference is made to fig. 1-7, wherein fig. 1 and 2 belong to the prior art and fig. 3-7 belong to the design of the invention.

As shown in fig. 1, the method belongs to a part machining mode, the part is too large, and the machining stroke of an electric discharge machine is short, so that when a large-sized mold is machined, a part of the machining area exceeds the stroke limit, and the whole machining can be realized only by adjusting the position of the part for multiple times. Later, people design like the anchor clamps of fig. 2, use a plurality of switching anchor clamps 13 stack to realize the overstroke restriction, avoid many times clamping location, however, this kind of mode positioning error, clamping firmness can increase along with span length increase, have the precision low with the potential safety hazard.

The telescopic accurate positioning clamp crossing the stroke limit of the spark machine is further improved in the prior art shown in figure 2, and the main structure of the telescopic accurate positioning clamp comprises two main components, namely a fine positioning base component and a telescopic cantilever component, which are arranged on a machine tool spindle 12.

The invention of the utility model is characterized in that:

1. the existing electrode clamp tooling is compatible;

2. the clamp adjusting cantilever is designed and replaced according to the requirement;

3. the clamp machining range can be extended or shortened according to actual working conditions;

4. the clamp does not need to be corrected after being arranged on a machine, and is high in clamping and positioning and high in precision;

5. after the electrode is clamped, the meter calibration and the centering are not needed, and the direct discharge machining can be carried out;

6. the clamp is designed in a light weight mode, operation habits of workers are met, and the clamp is convenient to use.

As shown in fig. 3, wherein the fine positioning base assembly comprises: one end of the first fixing bolt 2, the second fixing bolt 3, the positioning accessory 5 and the first fine positioning body 6 is repeatedly and finely positioned with a machine table clamping position, and the middle piece square groove is connected with the adjustable cantilever 8; the fine positioning base component comprises a positioning fitting part 5 which is in threaded connection with the end face of the first fine positioning body 6, and the positioning fitting part 5 is detachably and fixedly connected with the machine tool spindle 12. The positioning fitting 5 is used for repeatedly and rapidly positioning the spanning telescopic fixture on the machine table main shaft 12.

Wherein, scalable cantilever subassembly includes: third fixing bolt 4, second smart location body 7, cantilever 8 with adjustable, check lock lever 9, one end and smart location base are fixed a position fast, and processing electrode 1 is installed to the other end. And a machining electrode 1 for part characteristic electric spark finish machining is installed at one end of the telescopic cantilever assembly, and the extension length of the telescopic cantilever assembly is correspondingly adjusted according to the length exceeding the stroke during machining of a machine tool, so that the integral machining of the parts is completed.

As shown in fig. 3, a square groove is formed in the middle of the fine positioning base assembly, and the telescopic cantilever assembly with a square cross section is slidably inserted into the square groove to achieve cantilever extension adjustment. The middle square groove is finely processed by a slow-moving wire, so that the processing precision of a fine positioning surface is ensured to be parallel and vertical to the machine table; the fine positioning base assembly comprises a first fine positioning body 6 provided with a square groove, the telescopic cantilever assembly comprises an adjustable cantilever 8 with a square cross section, and the square groove and the square cross section are matched and mutually inserted to realize adjustment; the adjustable cantilever 8 is assembled into the square groove by the first fine positioning body 6, and screws on two sides are loosened and locked to be convenient for quick locking, adjustment and replacement. The adjustable cantilever 8 is mainly used for supporting the first fine positioning body 6 and the second fine positioning body 7, can be adjusted in a telescopic mode, and the middle of the adjustable cantilever 8 is hollowed to reduce the whole weight.

As shown in fig. 3, the first fixing bolt 2 is installed on the side wall of the first fine positioning body 6, and the first fixing bolt 2 is rotated to abut against the side wall of the adjustable cantilever 8, so as to realize locking and positioning after adjusting the length of the cantilever, and the first fixing bolt 2 is used for loosening and locking the adjustable cantilever 8 in the lateral direction. The second fixing bolt 3 is installed on the bottom wall of the first fine positioning body 6 and is rotatably abutted to the bottom of the adjustable cantilever 8 through the second fixing bolt 3, so that further locking and positioning after the length of the cantilever is adjusted are realized; for loosening and locking the direction of the bottom of the adjustable cantilever 8.

Further, the one end that first smart location body 6 was kept away from to cantilever 8 with adjustable is connected with second smart location body 7, and second smart location body 7 and cantilever 8 with adjustable pass through second fixing bolt 3 threaded connection. And the lower end of the second fine positioning body 7 is connected with a machining electrode 1 for part characteristic electric spark fine machining. The second fine positioning body 7 is used for rapidly positioning the electrode to a clamping position for processing, and is released and taken out after finishing. Ensure during the installation of second smart location body 7 and keep perpendicular and parallel with accessory 8, reuse fixing bolt 3 is even to be locked fixedly, and the installation accuracy is ensured within 0.001 mm.

As shown in fig. 3, the upper end of the processing electrode 1 is a positioning column with a side plane, the second fine positioning body 7 is vertically provided with a middle hole cavity, the second fine positioning body 7 is transversely provided with a threaded hole, and the locking positioning is realized by rotating the screw-in locking rod 9 in the threaded hole to abut against the side plane of the positioning column. The locking rod 9 is used for opening and closing the second fine positioning body 7 to lock or fix the machining electrode 1; is arranged in a side hole of the second fine positioning body 7 and can be loosened or locked in a rotating way and can be taken down when not used.

As shown in fig. 7, the jig set up as described above is used in a spark machine of the prior art, which includes a machine body having a spindle on which the telescopic precision positioning jig described above is mounted across the stroke limit of the spark machine.

Due to the high compatibility of the special clamp to the electrode clamp and the machine tool, the machining of large parts on a small machine tool (see figures 3-7 in detail) can be realized, the electrode clamping precision and the discharge machining quality are controllable, and the machining efficiency of the large parts on the small machine tool is improved by about 30 percent.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims (10)

1. A cross scalable accurate positioning anchor clamps of spark machine stroke limit which characterized in that: including installing smart location base subassembly and scalable cantilever subassembly on lathe main shaft (12), the one end of scalable cantilever subassembly is installed and is used for the finish machining electrode (1) of part characteristic electric spark, and the length that surpasss the stroke during processing according to the lathe corresponds the extension length who adjusts scalable cantilever subassembly to accomplish to the processing of part wholeness.

2. The telescopic precise positioning clamp spanning the stroke limit of the spark machine as claimed in claim 1, wherein a square groove is formed in the middle of the precise positioning base assembly, and the telescopic cantilever assembly with a square cross section is slidably inserted into the square groove to realize cantilever extension adjustment.

3. The telescopic precise positioning clamp spanning the stroke limit of the spark machine according to claim 2, characterized in that the precise positioning base assembly comprises a first precise positioning body (6) provided with a square groove, and the telescopic cantilever assembly comprises an adjustable cantilever (8) with a square cross section.

4. The telescopic precise positioning clamp spanning the stroke limit of the spark machine according to claim 3, characterized in that a first fixing bolt (2) is mounted on the side wall of the first precise positioning body (6), and the first fixing bolt (2) is rotatably abutted against the side wall of the adjustable cantilever (8) to realize locking and positioning after the length of the cantilever is adjusted.

5. The telescopic precise positioning clamp spanning the stroke limit of the spark machine according to claim 4, characterized in that a second fixing bolt (3) is installed on the bottom wall of the first precise positioning body (6), and the second fixing bolt (3) is rotatably abutted to the bottom of the adjustable cantilever (8) to realize further locking and positioning after the length of the cantilever is adjusted.

6. The telescopic precise positioning clamp spanning the stroke limit of the spark machine according to claim 4, characterized in that the fine positioning base assembly comprises a positioning fitting (5) which is in threaded connection with the end face of the first fine positioning body (6), and the positioning fitting (5) is detachably and fixedly connected with the machine tool spindle (12).

7. The telescopic precise positioning clamp spanning the stroke limit of the spark machine according to claim 6, characterized in that one end of the adjustable cantilever (8) far away from the first precise positioning body (6) is connected with a second precise positioning body (7), and the lower end of the second precise positioning body (7) is connected with a processing electrode (1) for part characteristic electric spark finish machining.

8. The telescopic precision positioning clamp spanning the stroke limit of the spark machine according to claim 7, characterized in that the second precision positioning body (7) and the adjustable cantilever (8) are in threaded connection by a second fixing bolt (3).

9. The telescopic precise positioning clamp spanning the stroke limit of the spark machine according to claim 8, wherein the upper end of the machining electrode (1) is a positioning column with a side plane surface, the second fine positioning body (7) is vertically provided with a central hole cavity, the second fine positioning body (7) is transversely provided with a threaded hole, and the locking rod (9) is rotated and screwed in the threaded hole to abut against the side plane surface of the positioning column, so that locking and positioning are realized.

10. A spark machine comprising a machine body, wherein a telescopic precision positioning clamp of any one of claims 1 to 9 is mounted on a spindle of the machine body to span the stroke limit of the spark machine.

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