CN113385970A

CN113385970A - Centering clamping tool

Info

Publication number: CN113385970A
Application number: CN202110656190.2A
Authority: CN
Inventors: 王汝站; 李崇展; 王占泉; 徐晓龙; 李亮
Original assignee: Liuzhou Wuling Automobile Industry Co Ltd; Guangxi Automobile Group Co Ltd
Current assignee: Liuzhou Wuling Automobile Industry Co Ltd; Guangxi Automobile Group Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-09-14

Abstract

The invention discloses a centering and clamping tool which comprises a positioning table, wherein a workpiece to be assembled can be arranged on the positioning table; still include centering compressing tightly part, drive disk assembly and lathe pull rod, centering compressing tightly the one end of part and being equipped with the portion of compressing tightly, the other end is equipped with connecting portion, under the assembled state, the lathe pull rod can pass through drive disk assembly with connecting portion link to each other, the lathe pull rod can be followed the axial pulling centering compressing tightly part, so that centering compressing tightly part compress tightly treat the assembly work piece. According to the centering clamping tool, the centering pressing part, the transmission part and the machine tool pull rod can be automatically matched to clamp a workpiece to be assembled, the whole clamping and assembling process is less in manual participation, the automation degree is high, and the production efficiency is favorably ensured.

Description

Centering clamping tool

Technical Field

The invention relates to the technical field of clamps, in particular to a centering clamping tool.

Background

When parts such as a brake hub assembly are machined by a finishing machine, centering and clamping are required. However, most of the existing centering and clamping tools are operated manually, so that the labor intensity of the manual operation is high, and meanwhile, the production efficiency is influenced.

Disclosure of Invention

The invention aims to provide a centering and clamping tool which can reduce manual participation and further improve the production efficiency.

In order to solve the technical problem, the invention provides a centering and clamping tool which comprises a positioning table, wherein a workpiece to be assembled can be arranged on the positioning table; still include centering compressing tightly part, drive disk assembly and lathe pull rod, centering compressing tightly the one end of part and being equipped with the portion of compressing tightly, the other end is equipped with connecting portion, under the assembled state, the lathe pull rod can pass through drive disk assembly with connecting portion link to each other, the lathe pull rod can be followed the axial pulling centering compressing tightly part, so that centering compressing tightly part compress tightly treat the assembly work piece.

Different from the background technology, the centering and clamping tool provided by the invention has the advantages that the centering and clamping component, the transmission component and the machine tool pull rod can be automatically matched to clamp a workpiece to be assembled, the whole clamping and assembling process has less manual participation, the automation degree is higher, and the production efficiency is favorably ensured.

Optionally, the centering pressing part comprises a rod body, and the pressing part is detachably mounted on the rod body.

Optionally, the centering and pressing part comprises a rod body, a rod wall of the rod body is provided with connecting blocks protruding outwards in the radial direction, and the connecting part comprises the connecting blocks; the transmission component is a rotary pressing cylinder.

Optionally, the positioning table comprises a fixed table body and a floating table body, the floating table body is connected with the fixed table body in a sliding manner, the fixed table body is provided with a through hole, and a hole section of the through hole, which is far away from the machine tool pull rod, is a tapered hole section which is gradually expanded from the direction far away from the machine tool pull rod; the floating platform is characterized by further comprising a plurality of locking blocks with wedge-shaped sections, the floating platform body is connected with the locking blocks, the centering pressing part is inserted into the through hole in an assembling state, and the locking blocks are located in the conical hole section and arranged around the centering pressing part.

Optionally, the floating platform body comprises a platform body part and a cylinder body part, the cylinder body part is inserted into the through hole and connected with each locking block, and the centering pressing part is inserted into an inner hole of the cylinder body part.

Optionally, the outer wall of the barrel body is provided with a limiting matching portion which is recessed in the radial direction and extends in the axial direction, the fixed table body is provided with a limiting portion, and the limiting portion is inserted into the limiting matching portion.

Optionally, the table body portion includes a floating disc and a connecting disc, the connecting disc is fixedly connected with the barrel portion, and the floating disc is connected with the connecting disc through an elastic member.

Optionally, the gas detection device further comprises a gas detection device, wherein the gas detection device comprises a gas cavity, a detection channel and a communication channel, and the detection channel and the communication channel can be communicated with the gas cavity and the outside; the floating platform body is connected with the stop block, and the movable stop block can block or open the communication channel.

Optionally, the floating platform further comprises an elastic reset component for resetting the floating platform body.

Optionally, the outer edge clamping device further comprises a plurality of clamping arms, and each clamping arm can clamp the outer edge of the workpiece to be assembled.

Optionally, the clamping arm is hinged, one end of the clamping arm is connected with the chuck, and the other end of the clamping arm is in transmission connection with the driving piece.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a centering and clamping tool provided in the present invention;

FIG. 2 is a schematic view of the centering and pressing member with the pressing portion removed;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

FIG. 4 is a partial enlarged view of portion B of FIG. 1;

FIG. 5 is a schematic view of the locking block;

fig. 6 is a partially enlarged view of a portion C in fig. 1.

The reference numerals in fig. 1-6 are illustrated as follows:

1, a positioning table, 11 fixing table bodies, 111 limiting parts, 12 floating discs, 13 force transmission components, 131 connecting discs, 132 cylinder bodies, 132a limiting matching parts, 14 locking blocks and 15 elastic parts;

2, a workpiece to be assembled;

3, centering and pressing components, 31 pressing parts, 32 connecting parts and 33 rod bodies;

4 a transmission component;

5, a machine tool pull rod;

6, a gas detection device, 61 a first cylinder, 611 a stop block, 62 a second cylinder, 621 a detection channel, 622 a communication channel and 63 an air cavity;

7 outer edge gripping means, 71 gripping arms, 711 gripping head, 72 drive.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

As used herein, the term "plurality" refers to an indefinite number of plural, usually more than two; and when the term "plurality" is used to indicate a quantity of a particular element, it does not indicate a quantitative relationship between such elements.

The terms "first," "second," and the like, herein are used for convenience in describing two or more structures or components that are identical or similar in structure and/or function and do not denote any particular limitation in order and/or importance.

Referring to fig. 1 to 6, fig. 1 is a schematic structural view of an embodiment of a centering and clamping tool provided in the present invention, fig. 2 is a schematic structural view of a centering and clamping component with a clamping portion removed, fig. 3 is a partial enlarged view of a portion a in fig. 1, fig. 4 is a partial enlarged view of a portion B in fig. 1, fig. 5 is a schematic structural view of a locking block, and fig. 6 is a partial enlarged view of a portion C in fig. 1.

As shown in fig. 1, the invention provides a centering and clamping tool, which comprises a positioning table 1, wherein a workpiece 2 to be assembled can be arranged on the positioning table 1.

Further, the centering and pressing device comprises a centering and pressing component 3, a transmission component 4 and a machine tool pull rod 5, wherein one end of the centering and pressing component 3 is provided with a pressing part 31, the other end of the centering and pressing component is provided with a connecting part 32, the machine tool pull rod 5 is connected with the connecting part 32 through the transmission component 4 in an assembling state, and the machine tool pull rod 5 can pull the centering and pressing component 3 along the axial direction so that the pressing part 31 of the centering and pressing component 3 presses the workpiece 2 to be assembled.

Different from the background technology, the centering and clamping tool provided by the invention has the advantages that the centering and clamping component 3, the transmission component 4 and the machine tool pull rod 5 can be automatically matched to clamp the workpiece 2 to be assembled, the whole clamping and assembling process has less manual participation, the automation degree is higher, and the production efficiency is favorably ensured.

The centering and pressing part 3 can be of an integrated structure or a split structure, and the scheme can be adopted in specific implementation.

Taking a split structure as an example, referring to fig. 2, the centering pressing member 3 may include a rod 33, the pressing portion 31 is detachably mounted on the rod 33, and the detachable connection mode may be a threaded connection, a clamping connection, or the like. Therefore, the pressing part 31 can be conveniently replaced according to the type and the model of the workpiece 2 to be assembled, and the workpiece 2 to be assembled can be reliably pressed.

It should be noted that, even if the centering pressing member 3 is of a split structure, it needs to be assembled in advance before the workpiece 2 to be assembled is assembled, so as to avoid affecting the subsequent automatic pressing operation.

The design of the connection 32 and the transmission part 4 can be chosen widely, as long as a reliable connection between the machine tool tie rod 5 and the centering and pressing part 3 is ensured.

In an exemplary solution, in connection with fig. 3, the wall of the rod body 33 may be provided with a radially outwardly projecting connecting piece, which the aforementioned connecting portion 32 may comprise; the connecting blocks may be arranged around the rod body 33 for one circle, and at this time, the connecting blocks may be annular, or the connecting blocks may be arranged only at a local position on the circumferential direction of the rod body 33, and at this time, the number of the connecting blocks may be multiple; the transmission member 4 may be a rotary push-down cylinder.

The rotary hold-down cylinder may comprise a ram (not shown) which may be in a splayed state when the centering hold-down member 3 is not installed, to make room for installation of the centering hold-down member 3. After the centering pressing part 3 is installed, under the action of the machine tool pull rod 5, the pressure head can rotate to a position capable of acting on the connecting block in the axial direction, and then the centering pressing part 3 can be driven to perform axial displacement through the axial action of the pressure head and the connecting block.

It should be noted that the transmission component 4 is not limited to a rotary push-down cylinder, and may also adopt other forms of structural components; for example, the transmission component 4 may include a radial displacement portion and an axial displacement portion, the axial displacement portion may be in transmission connection with the machine tool pull rod 5, the radial displacement portion may include the aforementioned pressing head, the radial displacement portion may drive the pressing head to displace in the radial direction to move to a position avoiding the centering pressing component 3 or to a position capable of acting with the connecting block in the axial direction, and when the pressing head moves to a position capable of acting with the connecting block in the axial direction, the machine tool pull rod 5 may pull the centering pressing component 3 to act through the axial displacement portion and the radial displacement portion.

With continued reference to fig. 1, the positioning table 1 may include a fixed table body 11 and a floating table body, the workpiece 2 to be assembled is mounted on the floating table body, and the floating table body may axially slide relative to the fixed table body 11. It should be noted that the axial sliding between the two can not slip off, that is, a limiting member can be further disposed between the fixed stage body 11 and the floating stage body, and the specific structure of the limiting member is not limited herein, and in specific practice, the limiting member can be disposed with reference to the drawings or other prior art.

With reference to fig. 4 and 5, the fixed table body 11 may be provided with a through hole, and a hole section (an upper end hole section in the drawing) of the through hole far from the machine tool pull rod 5 is a tapered hole section gradually expanded from a direction (a bottom-to-top direction in the drawing) far from the machine tool pull rod 5; the floating platform can further comprise a plurality of locking blocks 14 with wedge-shaped sections, the floating platform body can be connected with the locking blocks 14, in an assembling state, the centering pressing part 3 is inserted into the through hole, and the locking blocks 14 are located in the conical hole section and arranged around the centering pressing part 3.

By adopting the structure, when the workpiece 2 to be assembled is arranged on the floating platform body, under the action of gravity of the workpiece 2 to be assembled, the floating platform body can move towards the direction of the machine tool pull rod 5, and further can drive each locking block 14 to move towards the direction of the machine tool pull rod 5, and under the action of the inner wall of the conical hole section and the wedge-shaped surface of each locking block 14, each locking block 14 can move inwards along the radial direction to hold the centering pressing part 3 tightly, so that the centering pressing part 3 can be positioned at the central position.

In detail, the floating platform body may include a platform body portion and a cylinder portion 132, the cylinder portion 132 may be inserted into the through hole and connected to each locking block 14, and the centering pressing member 3 is inserted into an inner hole of the cylinder portion 132. The connecting structure between the cylinder 132 and the locking block 14 is not limited herein as long as the connecting reliability between the two is ensured; in the illustrated embodiment, as shown in fig. 4, one of the body portion 132 and the locking block 14 may be provided with a projection, and the other may be provided with a groove, into which the projection may be inserted to form a coupling fit in the axial direction.

The number of locking blocks 14 can be adjusted as desired. In the embodiment of the drawings, as shown in fig. 5, the number of the locking blocks 14 may be three; of course, it may be provided in other numbers, such as four, five, etc.

Referring to fig. 4, the outer wall of the barrel 132 may be provided with a radially inwardly recessed and axially extending limit fitting portion 132a, and the limit fitting portion 132a may radially penetrate through the barrel wall of the barrel 132 or may not radially penetrate through the barrel wall of the barrel 132; the fixing table 11 may have a position-limiting portion 111, and the position-limiting portion 111 may be inserted into the position-limiting engaging portion 132 a. In this way, the axial displacement of the cylinder 132 relative to the fixed table 11 can be limited by the engagement of the limiting part 111 and the limiting engagement part 132a, so as to avoid the locking block 14 from locking the centering pressing member 3 due to the excessive axial displacement of the cylinder 132 as much as possible.

The limiting part 111 can be mounted on the fixed table body 11 in a connection mode capable of adjusting the radial assembling depth, so that the radial mounting position of the limiting part 111 can be conveniently adjusted, and the barrel part 132 can be conveniently disassembled and assembled. In the embodiment of the drawings, the position-limiting portion 111 may be a threaded member in the form of a screw or the like, and besides, the position-limiting portion 111 may be a member such as a spring pin or the like.

The platform part can comprise a floating disc 12 and a connecting disc 131, wherein the connecting disc 131 can be fixedly connected with the barrel part 132, the specific connecting mode can be threaded connection, clamping connection, welding connection and the like, and the floating disc 12 is connected with the fixed platform body 11 in a sliding mode; the floating disc 12 and the connecting disc 131 may be connected by an elastic member 15. For convenience of description, the combined component of the connecting plate 131 and the barrel portion 132 may be referred to as a force transmission member 13.

So set up, floating disc 12 directly bears the gravity from waiting to assemble work piece 2 to transmit this power to biography power component 13 through elastic component 15, elastic component 15 can well balance the atress to guarantee as far as possible that the power of transmitting power component 13 and biography power component 13 coaxial setting, like this, biography power component 13 is difficult for producing phenomenons such as slope, jamming in the action in-process.

The elastic member 15 may be an elastic member in various forms such as elastic string, elastic block, spring, etc., as long as the above technical effects can be achieved. In the case of a spring, the number of the elastic members 15 may be one, and in this case, the elastic members 15 may be sleeved on the barrel portion 132; alternatively, the number of the elastic members 15 may be plural, and in this case, each elastic member 15 may be arranged around the cylinder portion 132.

Further, the gas detection device 6 can be further included, the gas detection device 6 can include an air cavity 63, a detection channel 621 and a communication channel 622, and both the detection channel 621 and the communication channel 622 can be communicated with the air cavity 63 and the outside; a stop 611 may also be included, and the floating stage body may be coupled to the stop 611. In this way, the stop block 611 can displace synchronously with the floating platform body, and the moving stop block 611 can block or open the communication channel 622, thereby assisting in judging whether the workpiece 2 to be assembled is assembled in place.

For example, when the workpiece 2 to be assembled is assembled in place, the stopper 611 may block the communicating channel 622, and at this time, the air cavity 63 is a relatively closed chamber, and the air pressure may be detected through the detecting channel 621; when the stop block 611 does not block the communication channel 622, that is, when the workpiece 2 to be assembled is not assembled in place, the air cavity 63 can be communicated with the outside through the communication channel 622, and the air pressure cannot be detected through the detection channel 621; thus, whether the workpiece 2 to be assembled is assembled in place can be judged by whether the air pressure can be detected. Of course, it is also possible that the air pressure is not detected to indicate that the workpiece 2 to be assembled is installed in place, and the air pressure is detected to indicate that the workpiece 2 to be assembled is not installed in place, which is also feasible in practical application.

Referring to fig. 6, the air chamber 63 may be formed by the first cylinder 61 and the second cylinder 62, and the first cylinder 61 and the second cylinder 62 may surround the air chamber 63, the aforementioned stopper 611 may be disposed on the first cylinder 61, and the detection channel 621 and the communication channel 622 may be disposed on the second cylinder 62.

An elastic reset component can be arranged between the floating table body and the fixed table body 11 and is used for resetting the floating table body after the workpiece 2 to be assembled is removed; at the same time, the initial position of the floating platform body can also be limited. The choice of the type of elastic return means can be made with reference to the elastic element 15 described previously, without repeated explanation here.

Further, an outer edge clamping device 7 can be further included, and the outer edge clamping device 7 can include a plurality of clamping arms 71, and each clamping arm 71 can clamp the outer edge of the workpiece 2 to be assembled so as to clamp and position the outer edge of the workpiece 2 to be assembled.

Specifically, as also shown in fig. 1, the clamping arm 71 may be hinged, one end of the clamping arm may be connected with the chuck 711, and the other end of the clamping arm may be in transmission connection with the driving member 72, and the driving member 72 may apply a driving force to the clamping arm 71, so as to drive the clamping arm 71 to rotate around the hinged portion, and clamp or release the workpiece 2 to be assembled through the chuck 711.

The driving member 72 may be a cylinder, an oil cylinder, or the like, or may be a driving element in the form of a motor, or the like.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a centering presss from both sides tight frock, including locating platform (1), treat assembly work piece (2) can install in locating platform (1), its characterized in that still includes centering and compresses tightly part (3), drive disk assembly (4) and lathe pull rod (5), the centering compresses tightly the one end of part (3) and is equipped with to compress tightly portion (31), the other end and is equipped with connecting portion (32), under the assembled state, lathe pull rod (5) can pass through drive disk assembly (4) with connecting portion (32) link to each other, axial pulling can be followed in lathe pull rod (5) the centering compresses tightly part (3), so that the centering compresses tightly part (3) compress tightly portion (31) and compress tightly treat assembly work piece (2).

2. The centering and clamping tool as claimed in claim 1, wherein the centering and pressing member (3) comprises a rod body (33), and the pressing portion (31) is detachably mounted on the rod body (33).

3. The centering and clamping tool as claimed in claim 1, wherein the centering and pressing member (3) comprises a rod body (33), a rod wall of the rod body (33) is provided with a connecting block protruding outwards in the radial direction, and the connecting part (32) comprises the connecting block;

the transmission component (4) is a rotary pressing cylinder.

4. The centering and clamping tool as claimed in any one of claims 1 to 3, wherein the positioning table (1) comprises a fixed table body (11) and a floating table body, the floating table body is connected with the fixed table body (11) in a sliding manner, the fixed table body (11) is provided with a through hole, and a hole section of the through hole, which is far away from the machine tool pull rod (5), is a tapered hole section which is gradually enlarged from a direction far away from the machine tool pull rod (5);

the floating platform is characterized by further comprising a plurality of locking blocks (14) with wedge-shaped sections, the floating platform body is connected with the locking blocks (14), in an assembly state, the centering pressing component (3) is inserted into the through hole in a penetrating mode, and the locking blocks (14) are located in the conical hole section and arranged around the centering pressing component (3).

5. The centering and clamping tool as claimed in claim 4, wherein the floating table body comprises a table body part and a cylinder body part (132), the cylinder body part (132) is inserted into the through hole and connected with each locking block (14), and the centering and pressing part (3) is inserted into an inner hole of the cylinder body part (132).

6. The centering and clamping tool as claimed in claim 5, wherein the outer wall of the barrel portion (132) is provided with a limiting engagement portion (132a) which is recessed in the radial direction and extends in the axial direction, the fixed table body (11) is provided with a limiting portion (111), and the limiting portion (111) is inserted into the limiting engagement portion (132 a).

7. The centering and clamping tool as claimed in claim 5, wherein the stage body comprises a floating disc (12) and a connecting disc (131), the connecting disc (131) is fixedly connected with the barrel body (132), and the floating disc (12) is connected with the connecting disc (131) through an elastic piece (15).

8. The centering and clamping tool according to claim 4, further comprising an air detection device (6), wherein the air detection device (6) comprises an air cavity (63), a detection channel (621) and a communication channel (622), and both the detection channel (621) and the communication channel (622) can be communicated with the air cavity (63) and the outside;

the floating platform further comprises a stop block (611), the floating platform body is connected with the stop block (611), and the movable stop block (611) can block or open the communication channel (622).

9. The centering and clamping tool as claimed in claim 4, further comprising an elastic reset component for resetting the floating table body.

10. The centering and clamping tool as claimed in any one of claims 1 to 3, further comprising an outer edge clamping device (7), wherein the outer edge clamping device (7) comprises a plurality of clamping arms (71), and each clamping arm (71) can clamp the outer edge of the workpiece (2) to be assembled.

11. The centering and clamping tool as claimed in claim 10, wherein the clamping arm (71) is hinged, one end of the clamping arm is connected with the clamping head (711), and the other end of the clamping arm is in transmission connection with the driving member (72).