CN212169617U

CN212169617U - Milling groove clamp for T-shaped tubular workpiece

Info

Publication number: CN212169617U
Application number: CN202020755010.7U
Authority: CN
Inventors: 刘瑛; 雷阳; 江星瑶
Original assignee: Hangzhou Vocational and Technical College
Current assignee: Hangzhou Vocational and Technical College
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-12-18
Anticipated expiration: 2030-05-09

Abstract

The utility model provides a milling groove clamp for T-shaped tubular workpieces, which comprises a pressing plate, an index plate and a clamp body, wherein the pressing plate is arranged above the index plate and used for applying force to the direction of the index plate so as to press the workpieces on the index plate; the dividing plate is arranged above the clamp body, a workpiece is placed at the upper end of the dividing plate, the workpiece is axially positioned by the first positioning pin, the middle part of the dividing plate is rotatably connected with the clamp body through a mandrel, and a plurality of limiting holes are dispersedly arranged in the end face of the dividing plate along a certain circumference which takes the axis of the mandrel as the center of circle; the clamp body is provided with an upper end face which protrudes upwards and is used for bearing the dividing plate, the lower part of the upper end face is hollowed, and the clamp body is provided with a centering pin which penetrates through the upper end face and can slide up and down relative to the upper end face; the centering pin is arranged right below the circumference, and when the indexing disc drives the workpiece to rotate along the axial direction, the centering pin can be opposite to one limiting hole. The milling groove clamp is simple in structure, and can assist in processing different radial grooves of a workpiece.

Description

Milling groove clamp for T-shaped tubular workpiece

Technical Field

The utility model belongs to the technical field of the machining technique and specifically relates to a milling flutes anchor clamps of T type tubular workpiece are related to.

Background

The milling machine fixture is mainly used for processing planes, grooves, splines and various forming surfaces on parts, and is one of the most commonly used fixtures. Mainly comprises a positioning device, a clamping device, a clamp body, a connecting element and a tool setting element. During milling, the cutting force is large, the cutting is interrupted, and the vibration is large, so that the clamping force requirement of the milling machine clamp is large, and the requirements on the rigidity and the strength of the clamp are high.

The milling groove fixture is the most common milling machine fixture, is used for milling grooves on the end faces of workpieces, is generally complex in structure, and can clamp and fix T-shaped tubular workpieces less frequently.

In addition, in some cases, the same workpiece needs to have a plurality of key slots with different radial directions at the same time, and for the situation, in the prior art, the workpiece needs to be detached and clamped again to be positioned after one key slot is machined, and then the next key slot is machined, which is time-consuming and labor-consuming.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a milling flutes anchor clamps to T type tubular workpiece, this milling flutes anchor clamps is simple structure not only, can also assist the different radial groove class processing of T type tubular workpiece.

Based on the above-mentioned purpose, the utility model provides a milling flutes anchor clamps of T type tubular workpiece, this anchor clamps include clamp plate, graduated disk and the anchor clamps body, wherein:

the pressure plate is arranged above the index plate and used for applying force to the direction of the index plate so as to press the workpiece on the index plate;

the dividing plate is arranged above the clamp body, the workpiece is placed at the upper end of the dividing plate and is axially positioned by the first positioning pin, the middle part of the dividing plate is rotatably connected with the clamp body through a mandrel, and a plurality of limiting holes are dispersedly arranged in the end face of the dividing plate along a certain circumference which takes the axis of the mandrel as the circle center;

the clamp body is provided with an upper end face which protrudes upwards and is used for bearing the dividing plate, the lower part of the upper end face is hollowed, and the clamp body is provided with a centering pin which penetrates through the upper end face and can slide up and down relative to the upper end face; the centering pin is arranged right below the circumference, and when the indexing disc drives the workpiece to rotate along the axial direction, the centering pin can be opposite to one limiting hole;

when one limiting hole on the index plate rotates to the position above the centering pin, the centering pin is inserted into the limiting hole, and the index plate is circumferentially positioned, so that the workpiece is circumferentially rotated.

Preferably, a second positioning pin is arranged on the index plate below one end, far away from the workpiece, of the pressure plate, and the second positioning pin applies force upwards to abut against the pressure plate;

a stud penetrates through the middle part of the pressure plate, and the other end of the stud is connected with the index plate;

when the screw bolt is locked by the nut, the pressure plate, the screw bolt and the pressure plate are matched to form a lever structure, so that the pressure plate applies pressure towards the index plate to the workpiece, and the workpiece is fixed on the index plate.

Preferably, the pressing plate is Z-shaped, and one end of the pressing plate close to the workpiece protrudes upwards, so that the pressing plate can clamp the edge of the workpiece.

Preferably, the number of the pressing plates is two, and the two pressing plates are symmetrically arranged on two sides of the workpiece.

Preferably, a bearing assembly is arranged on the mandrel between the indexing disc and the clamp body; the upper end face of the clamp body is provided with a first nut used for fixing the lower end of the mandrel, and the top of the dividing plate is provided with a second nut used for fixing the upper end of the mandrel.

Preferably, the first nut is a wing nut.

Preferably, the bearing assembly comprises a bearing race, a thrust bearing and a bearing end cover from bottom to top, the bearing race is fixed on the upper end face of the clamp body, and the bearing end cover is arranged at the bottom of the dividing plate.

Preferably, a through hole is formed in the upper end face of the fixture body, a first bushing is arranged in the through hole, and the centering pin penetrates through the first bushing;

an inverted T-shaped pin hole is formed in the first bushing; the centering pin penetrates through the inverted T-shaped pin hole, and the middle part of the centering pin protrudes outwards in the radial direction to form a protruding part, so that the centering pin is limited to slide up and down in the range between the bottom of the dividing plate and the bottom of the pin hole.

Preferably, a second spring is fixed at a step of the inverted T-shaped pin hole, and the second spring is sleeved below the protruding structure of the counter pin and abuts against the protruding structure, so as to apply a force towards the direction of the index plate to the counter pin, thereby assisting the counter pin to be inserted into the limit hole.

Preferably, a handle is arranged at the bottom of the aligning pin to assist the aligning pin to slide up and down.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses can assist the different radial groove class processing of T type tubular workpiece, and to the condition that needs processed different radial keyways, after having processed a keyway, rotate the graduated disk and to its relocation can, needn' T dismantle the work piece, operation process is simple, and can improve machining efficiency.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1 is a partial sectional view of a first groove milling fixture according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a partial sectional view of a second groove milling fixture according to an embodiment of the present invention;

fig. 4 is a top view of the milling groove clamp in the embodiment of the present invention.

100, T-shaped tubular workpieces;

1. pressing a plate; 2. an index plate; 3. a mandrel; 4. a clamp body; 5. a bearing assembly;

11. a stud; 12. a first spring;

21. a limiting hole; 22. a first positioning pin; 23. a second nut; 24. a second positioning pin;

41. a through hole; 42. a first bushing; 43. aligning pins; 44. a first nut; 45. a positioning key; 46. a second spring;

431. a boss portion; 432. a handle.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Furthermore, in the description of the present invention, it is to be understood that the terms "central", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right" and "front", "rear", "left", "right" and "front", "rear", "side", "front", "rear", "side,

The terms "vertical," "horizontal," "top," "bottom," "inner," "clockwise," "counterclockwise," and the like are used in the orientation or positional relationship illustrated in the drawings for convenience in describing the invention and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present application, the terms "mounted", "connected", and "connected" are used unless otherwise specifically stated or limited,

The terms "fixed" and the like are to be understood in a broad sense, and for example, may be 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 and 3, a milling groove clamp for clamping a T-shaped tubular workpiece 100 comprises a pressure plate 1, an index plate 2 and a clamp body 4, wherein:

the pressure plate 1 is arranged above the index plate 2 and used for applying force to the direction of the index plate 2 so as to press the workpiece on the index plate 2;

as shown in fig. 1 and 4, the index plate 2 is disposed above the clamp body 4, the workpiece is placed on the upper end of the index plate and is axially positioned by a first positioning pin 22, the middle part of the index plate 2 is rotatably connected with the clamp body 4 through a mandrel 3, and a plurality of limiting holes 21 are dispersedly disposed in the end surface of the index plate 2 along a certain circumference with the axis of the mandrel 3 as the center of circle;

the clamp body 4 is provided with an upper end face which protrudes upwards and is used for bearing the dividing plate 2, the lower part of the upper end face is hollowed, and a centering pin 43 which penetrates through the upper end face and can slide up and down relative to the upper end face is arranged; the pair of fixed pins 43 is arranged right below the circumference, and when the indexing disc 2 drives the workpiece to rotate along the axial direction, the pair of fixed pins 43 can be just opposite to one limiting hole 21;

when one limiting hole 21 on the indexing disc 2 rotates to the position above the corresponding fixed pin 43, the corresponding fixed pin 43 is inserted into the corresponding limiting hole 21, the indexing disc 2 is circumferentially positioned, and therefore the workpiece is circumferentially rotated.

As a preferred embodiment, a second positioning pin 24 is arranged on the lower indexing disc 2 of the end of the pressure plate 1 away from the workpiece, and the second positioning pin 24 applies force upwards to abut against the pressure plate 1;

a stud 11 penetrates through the middle part of the pressure plate 1, and the other end of the stud 11 is connected with the index plate 2;

when the screw bolt 11 is locked by the nut, the pressure plate 1, the screw bolt 11 and the pressure plate 1 are matched to form a lever structure, so that the pressure plate 1 applies pressure towards the index plate 2 to the workpiece, and the workpiece is fixed on the index plate 2. Preferably, as shown in fig. 1, the stud 11 is further sleeved with a first spring 12 for cooperating with the first positioning pin 22 to abut against the pressure plate 1.

In a preferred embodiment, the pressing plate 1 is in a Z shape, and one end of the pressing plate 1 close to the workpiece protrudes upwards, so that the pressing plate 1 can clamp the edge of the workpiece.

As a preferred embodiment, two pressure plates 1 are symmetrically arranged on two sides of the workpiece; preferably, the bottom edge of the T-shaped tubular workpiece 100 is fixed to the upper end of the index plate 2, and the index plate 2 is provided with a plurality of first positioning pins 22, and the first positioning pins 22 are used for penetrating through the bottom edge of the T-shaped tubular workpiece 100 so as to axially fix the T-shaped tubular workpiece 100, so that the T-shaped tubular workpiece 100 is completely positioned by the cooperation of the pressure plate 1 and the first positioning pins 22. Of course, the first positioning pins 22 are preferably a plurality of pins, and are mounted on the index plate 2 in an interference fit manner, and the first positioning pins 22 may be all cylindrical pins or all diamond pins, or may be partially cylindrical pins and partially diamond pins, which is not limited in this embodiment.

As a preferred embodiment, as shown in fig. 4, three limiting holes 21 are provided, the limiting holes 21 are arranged at equal intervals, and the limiting holes 21 facing the aligning pin 43 are switched to realize 120 ° indexing of the workpiece.

As a preferred embodiment, a bearing assembly 5 is provided on the mandrel 3 between the indexing disk 2 and the clamp body 4; the upper end face of the clamp body 4 is provided with a first nut 44 for fixing the lower end of the mandrel 3, and the top of the dividing plate 2 is provided with a second nut 23 for fixing the upper end of the mandrel 3. Preferably, for ease of disassembly, the first nut 44 is a wing nut as shown in FIG. 1. Further preferably, the bearing assembly 5 comprises a bearing race, a thrust bearing and a bearing end cover from bottom to top, the bearing race is fixed on the upper end face of the clamp body 4, and the bearing end cover is arranged at the bottom of the index plate 2. Preferably, the mandrel 3 is installed on a thrust bearing, the mandrel 3 is in interference fit with a bearing tight ring through a shaft shoulder, a bearing race is installed in the bearing race, a bearing end cover is installed on the bearing race through a screw, and the bearing race is installed on the upper end face of the clamp body 4 through a screw; the second bush is installed in the upper end face of the clamp body 4 in an interference fit mode and is in clearance fit with the mandrel 3.

As a preferred embodiment, as shown in fig. 1 and 2, a through hole 41 is provided on the upper end surface of the clamp body 4, a first bushing 42 is provided in the through hole 41, and the centering pin 43 penetrates through the first bushing 42; preferably, an inverted "T" shaped pin hole is provided in the first bushing 42; the pair of fixing pins 43 penetrate the inverted T-shaped pin holes, and the middle portions of the pair of fixing pins 43 are protruded outward in the radial direction to form a protrusion 431, so that the pair of fixing pins 43 are defined in a range between the bottom of the index plate 2 and the bottom of the pin holes to slide up and down.

In a preferred embodiment, a second spring 46 is fixed to a step of the inverted T-shaped pin hole, and the second spring 46 is fitted under the protrusion of the counter pin 43 and abuts against the protrusion to apply a force to the counter pin 43 in the direction of the index plate 2, thereby assisting the counter pin 43 to be inserted into the stopper hole 21.

In a preferred embodiment, a handle is provided at the bottom of the alignment pin 43 to assist the alignment pin 43 to slide up and down.

In the embodiment, when the groove milling is performed, the following steps are adopted:

firstly, a workpiece is arranged on an index plate 2 and limited by a first locating pin 22, and a stud 11 and a nut are locked, so that a pressure plate 1 clamps the workpiece, and the positioning of the workpiece is completed;

inserting the centering pin 43 into one of the limiting holes 21, locking the butterfly nut, and processing a first groove;

after the first groove is machined, loosening the butterfly nut, pulling out the centering pin 43, rotating the index plate 2 until the next limiting hole 21 is opposite to the centering pin 43, loosening the handle, inserting the centering pin 43 into the limiting hole 21, locking the butterfly nut, and machining a second groove;

and repeating the above actions to finish the processing of the third groove.

According to the above embodiment, the utility model discloses can assist the different radial groove class processing of T type tubular workpiece, and to the condition that needs processed different radial keyways, after having processed a keyway, rotate the graduated disk and to its relocation can, needn' T dismantle the work piece, operation process is simple, and can improve machining efficiency.

Further, it should be noted that:

in the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention, and that any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims

1. The utility model provides a milling flutes anchor clamps of T type tubular workpiece which characterized in that, includes clamp plate (1), graduated disk (2) and anchor clamps body (4), wherein:

the pressure plate (1) is arranged above the index plate (2) and used for applying force to the direction of the index plate (2) so as to press the workpiece on the index plate (2);

the dividing plate (2) is arranged above the clamp body (4), the workpiece is placed at the upper end of the dividing plate, and is axially positioned by a first positioning pin (22), the middle part of the dividing plate (2) is rotatably connected with the clamp body (4) through a mandrel (3), and a plurality of limiting holes (21) are dispersedly arranged in the end face of the dividing plate (2) along a certain circumference which takes the axis of the mandrel (3) as the center of a circle;

the clamp body (4) is provided with an upper end face which protrudes upwards and is used for bearing the dividing plate (2), the lower part of the upper end face is hollowed out, and a centering pin (43) which penetrates through the upper end face and can slide up and down relative to the upper end face is arranged; the centering pin (43) is arranged right below the circumference, and when the indexing disc (2) drives the workpiece to rotate along the axial direction, the centering pin (43) can be opposite to one limiting hole (21);

when one limiting hole (21) on the indexing disc (2) rotates to the position above the centering pin (43), the centering pin (43) is inserted into the limiting hole (21) to circumferentially position the indexing disc (2), so that the workpiece is circumferentially rotated.

2. A slot milling fixture for a T-shaped tubular workpiece as claimed in claim 1, wherein a second positioning pin (24) is provided on the lower indexing plate (2) of the end of the pressure plate (1) away from the workpiece, the second positioning pin (24) being urged upwardly against the pressure plate (1);

a stud (11) penetrates through the middle part of the pressure plate (1), and the other end of the stud (11) is connected with the index plate (2);

when the screw bolt (11) is locked by the nut, the pressure plate (1), the screw bolt (11) and the pressure plate (1) are matched to form a lever structure, so that the pressure plate (1) applies pressure towards the index plate (2) to the workpiece, and the workpiece is fixed on the index plate (2).

3. A milling groove clamp for T-shaped tubular workpieces as claimed in claim 2, characterized in that the pressing plate (1) is Z-shaped, and one end of the pressing plate (1) close to the workpiece protrudes upwards, so that the pressing plate (1) can clamp the edge of the workpiece.

4. A milling groove clamp for T-shaped tubular workpieces according to claim 3, characterized in that the two pressing plates (1) are symmetrically arranged on both sides of the workpiece.

5. A slot milling fixture for T-shaped tubular workpieces as claimed in claim 1, characterized in that a bearing assembly (5) is provided on the mandrel (3) between the indexing disk (2) and the fixture body (4); the upper end face of the clamp body (4) is provided with a first nut (44) used for fixing the lower end of the mandrel (3), and the top of the index plate (2) is provided with a second nut (23) used for fixing the upper end of the mandrel (3).

6. A slot milling fixture for T-shaped tubular workpieces as set forth in claim 5, wherein said first nut (44) is a wing nut.

7. The milling groove clamp for T-shaped tubular workpieces as claimed in claim 5, wherein the bearing assembly (5) comprises a bearing race, a thrust bearing and a bearing end cover from bottom to top, the bearing race is fixed on the upper end face of the clamp body (4), and the bearing end cover is arranged at the bottom of the index plate (2).

8. A milling groove clamp for T-shaped tubular workpieces as claimed in claim 1, characterized in that the upper end surface of the clamp body (4) is provided with a through hole (41), a first bushing (42) is arranged in the through hole (41), and the centering pin (43) penetrates through the first bushing (42);

an inverted T-shaped pin hole is formed in the first bushing (42); the centering pin (43) penetrates through the inverted T-shaped pin hole, and the middle part of the centering pin (43) protrudes outwards in the radial direction to form a protruding part (431), so that the centering pin (43) is limited to slide up and down in the range between the bottom of the dividing plate (2) and the bottom of the pin hole.

9. A milling groove clamp for T-shaped tubular workpieces as claimed in claim 8, characterized in that a second spring (46) is fixed at the step of the inverted T-shaped pin hole, the second spring (46) is sleeved under the protruding structure of the counter pin (43) and abuts against the protruding structure, and is used for applying a force towards the direction of the dividing plate (2) to the counter pin (43) so as to assist the counter pin (43) to be inserted into the limiting hole (21).

10. A milling groove clamp for T-shaped tubular workpieces as claimed in claim 1, characterized in that the bottom of the centering pin (43) is provided with a handle to assist the centering pin (43) to slide up and down.