CN216681743U

CN216681743U - Precision self-centering circular grinding clamp

Info

Publication number: CN216681743U
Application number: CN202220202912.7U
Authority: CN
Inventors: 唐超
Original assignee: Dalian Jiechao Tools Co ltd
Current assignee: Dalian Jiechao Tools Co ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-06-07
Anticipated expiration: 2032-01-25

Abstract

The utility model discloses a precise self-centering circular grinding clamp, which relates to the technical field of precise self-centering circular grinding clamps and comprises a main body and a bottom plate, wherein the bottom plate is positioned below the main body, the right side of the main body is sequentially provided with a rotary main body, a fixed disk, a clamp, a jacket nut and a clamping piece assembly, the jacket nut is connected with the clamp through a connecting piece, the clamp is connected with the fixed disk through a locking screw B, and the fixed disk is connected with the rotary main body through a locking screw A. This accurate from centering circle grinding anchor clamps through improving many position spare parts to and increased a lot of braking function and traction function, make processing cutter and mould product precision better, more swiftly more convenient, the smooth finish of processing has also improved a lot, machining efficiency has obtained very big improvement.

Description

Precision self-centering circular grinding clamp

Technical Field

The utility model relates to the technical field of precision self-centering circular grinding clamps, in particular to a precision self-centering circular grinding clamp.

Background

In the tool and die processing industry, most products are precise, so the grinding is generally used for finishing the processing of the products. The products to be processed are generally square and round products. Both of these products are used in the machining industry, such as tools: the method is generally suitable for the processing fields of turning, milling, drilling, reaming, boring and the like. The products produced by the main cutter comprise automobile products, steamship parts, aerospace industry, household appliances, mechanical equipment and other fields. The mold product is generally used for stamping, injection molding and the like, and generally used for processing parts such as shells of automobile parts, electronic products, shells of household electrical appliances and the like. The main precise parts of the circular grinding fixture are processed by a precise numerical control curve grinder, the numerical control curve grinder is suitable for processing precise parts and instrument precise parts of military industry, aviation, aerospace, satellites and the like in the early stage and is used for precisely processing civil precise parts, cutters and molds in the later stage, and the existing precise self-centering circular grinding fixture cannot meet the requirements of the existing circular products when in use. The special clamp is used for clamping products, so that a lot of waste is generated, and each product needs to be clamped by one clamp, so that the production period of the product is prolonged, the manufacturing cost of the clamp is increased, the cost of the product is increased, the clamp is abandoned after the product is used, and a lot of waste is caused. Some products are processed by a double-tip mode, although the jumping is good, almost all cutter and die products cannot have central holes, so that the tip holes are required to be removed after the products are processed, the material use is wasted, the subsequent tip hole removal and increase process also increase the manufacturing cost of the products, the process of removing the tip holes is also increased, the machining and removal allowance is required to be calculated independently at each process and machining position during the machining, the problems of calculation errors, machining errors and the like are easily caused, the machining scrapping of the products is caused, and few technicians are willing to use the machining method unless the products allow the tip holes to be reserved, but the number of the products is very small. So the grinding process is carried out through the chuck centre gripping to circle class product the majority, and the general centre gripping product of accurate grinding chuck has a problem, because accurate chuck is general all very little, can only pass through three-jaw chuck centre gripping, when the chuck jack catch is whole to press from both sides tightly, the centre can produce very big centre gripping closed gap, also the chuck centre gripping minimum diameter can only restrict at 6 millimeters promptly, is less than 6 millimeters diameter product, can't the centre gripping through the mode of chuck and accomplishes processing. When the diameter of a product exceeds 22 mm, the product cannot pass through the central inner hole of the chuck and can only be positioned and installed through the end face of the chuck, when the workpiece is too long, the chuck cannot fix the product, when the workpiece is too long, the chuck cannot clamp the workpiece, and when the workpiece is too long, the product cannot jump. Even if the product length is not long, when the jack catch of chuck presss from both sides tightly, because the length of jack catch centre gripping is too short, the product is also difficult to find good jump. In addition, the clamping jaws are high in hardness and small in clamping force, the problem that a product cannot be clamped and is easy to jump is solved, a workpiece is easy to shake and cannot be machined, or the workpiece splashes to cause injury accidents. If the clamping force is too large, scars are easily clamped on the surface of a product to cause product scrapping, or the product is deformed due to too large clamping force to cause the phenomena that the product is scrapped and the like, and the surface of a workpiece is scratched due to too large clamping force to cause defective products, so that much trouble is brought to subsequent processing. Some cutter products are processed through graduation, another cutting edge needs to be rotated after one cutting edge is processed, and then repeated processing is carried out, if an ordinary chuck cannot be rapidly and accurately rotated to the next cutting edge after manual rotation, the cutting edge can be processed only by carrying out cutting edge alignment through a dial indicator, and time waste and alignment are also troublesome. When some circle class cutter and mould need whole rotatory circle to grind, press from both sides through chuck clamping mode and press from both sides and carry out abrasive machining again after will beating the alignment, because it is very troublesome to beat very big alignment, also because ordinary chuck clamping mode all is rotatory together through the handle shaking chuck manually, not only the manual work is very hard, shake speed uneven and speed very slow, if the tiny product of machining diameter, need the rotation rate some high, shake speed through the manpower is manual and can't reach the requirement, also can't process, manual shaking chuck processing is extravagant time very, also can not process out the smooth finish of ideal easily, it is unqualified and produce and scrap to make product processing very easily.

Disclosure of Invention

In order to solve the problems, namely the problems of the prior art, the utility model provides a precise self-centering circular grinding clamp, which comprises a main body and a bottom plate, wherein the bottom plate is positioned below the main body, the right side of the main body is sequentially provided with a rotary main body, a fixed disc, a clamp, a clamping sleeve nut and a clamping piece assembly, the clamping sleeve nut is connected with the clamp through a connecting piece, the clamp is connected with the fixed disc through a locking screw B, the fixed disc is connected with the rotary main body through a locking screw A, and a wrench groove is formed in the outer part of the clamping sleeve nut;

the left side of main part is provided with belt pulley fixed screw, set screw, reference column, belt pulley fixed disk, anchor clamps belt pulley and drive assembly respectively, the belt pulley fixed disk links to each other with the anchor clamps belt pulley, and belt pulley fixed screw runs through the belt pulley fixed disk respectively and anchor clamps belt pulley links to each other with the main part, set screw and reference column set up the central point of putting at belt pulley fixed disk and anchor clamps belt pulley, drive assembly passes through toothed belt and links to each other with the anchor clamps belt pulley.

Preferably, the clamping sleeve nut and the clamp are internally provided with locking inner conical surfaces.

Preferably, an extension hole is formed in the main body, and the extension hole extends to the tail end of the rotary main body.

Preferably, the clamping piece assembly comprises a jacket locking outer conical surface, a clamping hole and a jacket outer conical surface;

the clamping sleeve locking outer conical surface is in contact fit with the locking inner conical surface, and the clamping sleeve outer conical surface is attached to the locking inner conical surface of the clamp;

the clamping hole penetrates through the extending hole.

Preferably, the driving assembly comprises a motor belt pulley, a variable frequency motor and a frequency converter, the motor belt pulley is located on the upper portion of the bottom plate, the variable frequency motor is electrically connected with the frequency converter, and the motor belt pulley is arranged at the shaft end of the variable frequency motor.

Preferably, the connecting piece includes concave station, boss, the concave station sets up the inside wall at anchor clamps, the boss sets up in the terminal surface outside of fixed disk, boss and concave station accordant connection.

Preferably, the outer circle of the swivel body is fitted with a dial.

The beneficial technical effects of the utility model are as follows: this accurate self-centering circle grinds anchor clamps through improving many position spare parts to and increased a lot of braking function and traction function, make processing cutter and mould product precision better, more swiftly more convenient, the smooth finish of processing has also improved a lot, machining efficiency has obtained very big improvement, specifically as follows:

1. the anchor clamps that set up, and anchor clamps are inside to be provided with interior conical surface, and the anchor clamps right-hand member is installed through the screw-thread fit and is pressed from both sides the cover nut to processing has the locking interior conical surface, spanner groove and the nut screw thread of cooperation nut, realizes that anchor clamps and clamp cover and the cooperation of screwing between the cover nut come the centre gripping by the processing work piece, has solved the not high problem of original centre gripping precision. The clamping sleeve with a proper clamping range is selected according to the clamping diameter of the product, the clamping is small in jumping after clamping, the jumping can be processed by slightly jumping adjustment, and much time for finding the jumping is saved.

2. The fixed disk is fixedly connected with the rotary main body through the locking screw A, and the fixed disk is connected with the clamp through the locking screw B, so that the stability and firmness of the whole clamp are guaranteed.

3. Through the extension hole of seting up, conveniently add the work piece of long and through using, can not interfere with other anchor clamps each other. The problem that chucks of parts such as a plurality of lengthened cutters and dies cannot be clamped is solved, and the range of the processed products is enlarged.

4. Through the concave station and the boss, the alignment time of maintaining or changing the clamp is facilitated, the clamp can be installed and debugged very quickly, a lot of adjustment time is saved, and certain efficiency is improved.

5. The outer conical surface and the inner conical surface are locked through the arranged clamping sleeve to be matched. And a clamping hole and a clamping sleeve outer conical surface are processed in the middle of the clamping sleeve, so that the jumping precision is ensured, and much jumping finding time is saved. The jumping adjustment is carried out in a small range, and the clamp has the function of automatic centering and precise clamping and fixing. Saves a lot of alignment time for batch processing products, improves the production efficiency and improves the precision.

6. The dial disc solves the problem that the prior common chuck needs to align every blade part, saves a lot of adjustment and debugging time, and also improves the indexing precision.

7. Through the drive assembly who sets up, be convenient for adjust motor's rotational speed to obtain the rotational speed of arbitrary needs, can solve the processing smooth finish problem of product, also solved artifical manual rotation anchor clamps influence the problem of processing smooth finish in the past.

Drawings

Fig. 1 shows a front view of the structure of a precision self-centering circular grinding fixture.

Fig. 2 shows a top view of the structure of fig. 1.

Fig. 3 shows a schematic view of an original tooling fixture.

Reference numeral 1, a jacket nut; 2. a main body; 3. a clamp; 4. fixing the disc; 5. locking the screw A; 6. a locking screw B; 7. an extension hole; 8. a concave platform; 9. the fixed disc is matched with the boss; 10. a swivel body; 11. locking the inner conical surface; 12. a wrench groove; 13. a dial scale; 14. the jacket locks the outer conical surface; 15. a clamping hole; 16. the outer conical surface of the jacket; 17. a base plate; 18. a belt pulley fixing screw; 19. a set screw; 20. a positioning column; 21. a belt pulley fixing disc; 22. a motor pulley; 23. a variable frequency motor; 24. a frequency converter; 25. a clamp pulley; 26. a toothed belt; .

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

Referring to fig. 1 to 3, the utility model provides a precise self-centering circular grinding clamp, which comprises a main body 2 and a bottom plate 17, wherein the bottom plate 17 is positioned below the main body 2, the right side of the main body 2 is sequentially provided with a rotating main body 10, a fixed disk 4, a clamp 3, a jacket nut 1 and a clamping piece assembly, the inner wall of the jacket nut 1 is processed with threads, the inner parts of the jacket nut 1 and the clamp 3 are processed with locking inner conical surfaces 11, the jacket nut 1 is connected with the clamp 3 through a connecting piece, the connecting piece comprises a concave platform 8 and a convex platform 9, the concave platform 8 is arranged on the inner side wall of the clamp 3, the convex platform 9 is arranged on the outer end surface of the fixed disk 4, the convex platform 9 is connected with the concave platform 8 in a matching manner, the clamp 3 is connected with the fixed disk 4 through a locking screw B6, the fixed disk 4 is connected with the rotating main body 10 through a locking screw a5, a wrench groove 12 is arranged outside the jacket nut 1, an extension hole 7 is arranged inside the main body 2, and the extension hole 7 is extended to the rear end of the swivel body 10. The clamping component comprises a jacket locking outer conical surface 14, a clamping hole 15 and a jacket outer conical surface 16;

the clamping sleeve locking outer conical surface 14 is connected with the locking inner conical surface 11 in a matching way, and the clamping sleeve outer conical surface 16 is attached to the locking inner conical surface 11 of the clamp 3;

the clamping hole 15 penetrates through the extension hole 7;

the outer wall of the swivel body 10 is fitted with a dial 13.

The left side of main part 2 is provided with belt pulley fixed screw 18 respectively, set screw 19, reference column 20, belt pulley fixed disk 21, anchor clamps belt pulley 25 and drive assembly, belt pulley fixed disk 21 links to each other with anchor clamps belt pulley 25, and belt pulley fixed screw 18 runs through belt pulley fixed disk 21 and anchor clamps belt pulley 25 respectively and links to each other with gyration main part 10, set screw 19 and reference column 20 set up the central point that puts at belt pulley fixed disk 21 and anchor clamps belt pulley 25, drive assembly passes through toothed belt 26 and links to each other with anchor clamps belt pulley 25, drive assembly is including being located the motor belt pulley 22 on bottom plate 17 upper portion, inverter motor 23 and converter 24 electric connection, and motor belt pulley 22 sets up the axle head at inverter motor 23.

In this embodiment, a workpiece is clamped in the clamping hole 15 of the clamping sleeve, the inner conical surface of the clamp and the outer conical surface 16 of the clamping sleeve are fitted and matched with each other, the clamping sleeve nut 1 is screwed rightwards, so that the inner conical surface 11 of the nut lock and the outer conical surface 14 of the clamping sleeve are matched with each other, and the clamping sleeve nut 1 compresses and contracts the clamping hole 15 of the clamping sleeve to clamp the outer diameter of the workpiece. And (5) detecting and aligning the jump of the excircle of the workpiece by using a dial indicator. And (4) screwing a jacket nut, starting the variable frequency motor to obtain a proper rotating speed, and then starting machine tool equipment to perform precise grinding processing on the workpiece.

After the processing is finished, the motor is stopped to rotate, when the motor and the clamp stop rotating, the clamping hole 15 can be loosened by the left-handed jacket nut 1, and when the workpiece is not clamped tightly, the processed workpiece can be taken out. The operation is repeated to process and use the products in batch.

While the utility model has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and particularly, features shown in the various embodiments may be combined in any suitable manner without departing from the scope of the utility model. It is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the utility model, and the technical scheme after the changes or substitutions can fall into the protection scope of the utility model.

Claims

1. The utility model provides a precision is from centering circle grinding anchor clamps, includes main part (2) and bottom plate (17), bottom plate (17) are located main part (2) below, its characterized in that: a rotary main body (10), a fixed disc (4), a clamp (3), a jacket nut (1) and a clamping piece assembly are sequentially arranged on the right side of the main body (2), the jacket nut (1) is connected with the clamp (3) through a connecting piece, the clamp (3) is connected with the fixed disc (4) through a locking screw B (6), the fixed disc (4) is connected with the rotary main body (10) through a locking screw A (5), and a wrench groove (12) is formed in the outer portion of the jacket nut (1);

the left side of main part (2) is provided with belt pulley fixed screw (18), set screw (19), reference column (20), belt pulley fixed disk (21), anchor clamps belt pulley (25) and drive assembly respectively, belt pulley fixed disk (21) links to each other with anchor clamps belt pulley (25), and belt pulley fixed screw (18) run through belt pulley fixed disk (21) and anchor clamps belt pulley (25) respectively and link to each other with gyration main part (10), set screw (19) and reference column (20) set up the central point of putting at belt pulley fixed disk (21) and anchor clamps belt pulley (25), drive assembly passes through toothed belt (26) and links to each other with anchor clamps belt pulley (25).

2. The precision self-centering circular grinding fixture of claim 1, wherein: the clamping sleeve nut (1) and the clamp (3) are both internally provided with locking inner conical surfaces (11).

3. The precision self-centering circular grinding fixture of claim 1, wherein: an extension hole (7) is formed in the main body (2), and the extension hole (7) extends to the tail end of the rotary main body (10).

4. A precision self-centering circular milling fixture as claimed in claim 1, 2 or 3, wherein: the clamping piece assembly comprises a jacket locking outer conical surface (14), a clamping hole (15) and a jacket outer conical surface (16);

the clamping sleeve locking outer conical surface (14) is in contact fit with the locking inner conical surface (11), and the clamping sleeve outer conical surface (16) is attached to the locking inner conical surface (11) of the clamp (3);

the clamping hole (15) is communicated with the extension hole (7).

5. The precision self-centering circular grinding fixture of claim 1, wherein: the driving assembly comprises a motor belt pulley (22), a variable frequency motor (23) and a frequency converter (24), wherein the motor belt pulley (22), the variable frequency motor (23) and the frequency converter (24) are located inside the bottom plate (17), the variable frequency motor (23) is electrically connected with the frequency converter (24), and the motor belt pulley (22) is arranged at the shaft end of the variable frequency motor (23).

6. The precision self-centering circular grinding fixture of claim 1, wherein: the connecting piece includes concave station (8), boss (9), concave station (8) set up the inside wall at anchor clamps (3), boss (9) set up the outside at fixed disk (4), boss (9) and concave station (8) phase-match connection.

7. The precision self-centering circular grinding fixture of claim 1, wherein: the excircle of the rotary body (10) is provided with a dial (13).