CN220783655U - Hydraulic clamp with air tightness detection function and shared by two high-pressure shell parts - Google Patents

Abstract

The hydraulic clamp comprises a clamp body, a positioning support seat, a hole positioning pin seat, an angular positioning seat, a plurality of clamping cylinders, pressing plates, a pushing cylinder seat, an angular clamping pushing cylinder and a push rod, wherein the positioning support seat is arranged on the clamp body and is provided with a conical positioning mandrel with a conical part, the angular positioning seat is provided with a stop pin for angular positioning, the clamping cylinders are arranged on the clamp body in a distributed mode, the pressing plates are correspondingly arranged on the clamping cylinders, the pushing cylinder seat is arranged on the clamp body, the angular clamping pushing cylinder is arranged on the pushing cylinder seat, and the push rod is connected to the front end of the angular clamping pushing cylinder, and an airtight detection hole is formed in the plane of the positioning support seat. The hydraulic clamp can share one set of clamp with two different but similarly positioned high-pressure shell parts, and can process the two high-pressure product parts by switching processing programs, so that the manufacturing cost of the hydraulic clamp is effectively reduced, the manufacturing period of the clamp is shortened, the equipment investment is reduced, and the processing efficiency is improved.

Description

Hydraulic clamp with air tightness detection function and shared by two high-pressure shell parts

Technical Field

The utility model relates to an automobile part processing technology, in particular to a hydraulic clamp with air tightness detection, which is shared by two high-pressure shell parts and is suitable for OP20 working procedure processing of high-pressure product shell automobile parts.

Background

The production and processing of automobile high-pressure parts are generally processed in sequence, and the working procedures can be classified into turning-milling and milling-milling according to different products, and the working procedures of milling are processed on a four-axis or five-axis processing center machine tool by using hydraulic clamps because of different angles of processing surfaces and holes. In the five-axis hydraulic clamp for milling, for example, because the main positioning surfaces and the hole sizes of two high-pressure shell parts after the front machining are basically consistent, if one set of clamp which can meet the machining requirements of the two workpieces can be developed, the manufacture of the other set of clamp can be omitted.

Disclosure of Invention

In order to solve the problems, the utility model aims to provide the hydraulic clamp with the air tightness detection, which is shared by two high-pressure shell parts, so that the replacement and debugging time of the clamp and the occupied number of machine tools can be reduced, the cost is saved, and the machining efficiency is improved.

According to the present utility model, there is provided a hydraulic jig with airtightness detection common to two high-pressure housing pieces, including: the clamping device comprises a clamp body, a positioning support seat, a hole positioning pin seat, an angular positioning seat, a plurality of clamping cylinders and pressing plates, wherein the positioning support seat is arranged on the clamp body and is provided with a conical positioning mandrel with a conical part, the angular positioning seat is provided with baffle pins for angular positioning, the clamping cylinders are arranged on the clamp body in a distributed manner, the pressing plates are correspondingly arranged on the clamping cylinders, the pushing cylinder seat is arranged on the clamp body, the angular clamping pushing cylinder is arranged on the pushing cylinder seat, and the pushing rod is connected to the front end of the angular clamping pushing cylinder, wherein an airtight detection hole is formed in the plane of the positioning support seat.

Preferably, the conical positioning mandrel is connected with the spring through a screw and the hole positioning pin seat in a mode of being in clearance fit with the hole positioning pin seat and capable of elastically moving up and down along the hole positioning pin seat, and the hole positioning pin seat is mounted on the clamp body.

Preferably, the hydraulic clamp is provided with two groups of equal-height positioning support seats with different heights.

Preferably, the fixture body is also provided with an oil path hole for connecting hydraulic pressure and an air path hole for connecting air pressure.

Preferably, the hydraulic clamp further comprises an auxiliary supporting seat detachably mounted on the clamp body and a hydraulic auxiliary supporting cylinder mounted in the auxiliary supporting seat.

Preferably, the auxiliary supporting seat is installed on a plane of a lower portion of the clamp body.

Therefore, according to the hydraulic clamp disclosed by the utility model, two different high-pressure shell parts with similar positioning can share one clamp, two high-pressure product parts are processed by switching processing programs, so that the manufacturing cost of the hydraulic clamp is effectively reduced, the manufacturing period of the clamp is shortened, the equipment investment is reduced, and the processing efficiency is improved.

Drawings

Fig. 1 schematically shows a front view, a side view, and a top view of the hydraulic clamp of the present utility model in (a), (B), and (C).

Fig. 2 is a perspective view of the hydraulic clamp.

Fig. 3 is a perspective view of a high pressure housing part housing to which the present utility model is applicable.

Fig. 4 is a perspective view of another high pressure housing part housing to which the present utility model is applicable.

Fig. 5 schematically shows a perspective view of a positioning support with airtight detection.

Fig. 6 is a perspective view of another modification of the positioning support base with airtight detection.

The clamping device comprises a 1-clamp body, a 2-positioning support seat, a 3-hole positioning pin seat, a 4-positioning mandrel, a 5-angle positioning seat, a 6-stop pin, a 7-auxiliary support seat, an 8-auxiliary support cylinder, a 9-clamping cylinder, a 10-angle clamping push cylinder, an 11-push rod, a 12-push cylinder seat, a 13-spring and a 14-pressing plate.

Detailed Description

Exemplary embodiments of the present utility model are described in detail below with reference to the attached drawings. The exemplary embodiments described below and illustrated in the drawings are intended to teach the principles of the present utility model to enable one skilled in the art to make and use the present utility model in a number of different environments and for a number of different applications. The scope of the utility model is therefore defined by the appended claims, and the exemplary embodiments are not intended, and should not be considered, as limiting the scope of the utility model. Moreover, for ease of description, where like elements are designated by like or similar reference numerals throughout the several views, the dimensions of the various parts shown are not necessarily drawn to scale, and references to orientation, such as longitudinal direction of the body, and orientation or positional relationship indicated above, below, left, right, top, bottom, etc., are all based on the orientation or positional relationship shown in the drawings, merely for ease of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the utility model. The following description of the embodiments emphasizes the differences between the embodiments, and the same or similar features may be referred to each other, so that technical features in the different embodiments may be freely combined to form further embodiments according to design needs for brevity and not described in detail.

As shown in fig. 1, a hydraulic jig with airtightness detection commonly used for two high-pressure housing members (hereinafter also referred to as "workpieces") includes: the clamping device comprises a clamp body 1, a positioning mechanism (comprising a positioning support seat 2, a hole positioning pin seat 3, a conical positioning mandrel 4, an angular positioning seat 5, a stop pin 6 and a spring 13), a clamping mechanism (an oil cylinder 9 and a pressing plate 14), an auxiliary mechanism (an auxiliary support seat 7, an auxiliary support cylinder 8, an angular clamping push cylinder 10, a push rod 11, a push cylinder seat 12 and a screw).

The positioning mechanism mounted on the clamp body 1 includes: four equal-height positioning support seats 2, a hole positioning pin seat 3 embedded with a conical positioning mandrel 4 with a conical part, and an angular positioning seat 5 provided with a stop pin 6 for angular positioning.

The hole locating pin seat 3 is arranged on the clamp body 1 and is in clearance fit with the conical locating mandrel 4, the conical locating mandrel 4 and the spring 13 are connected with the hole locating pin seat 3 through screws, so that the conical locating mandrel 4 can elastically move up and down, the conical part of the conical locating mandrel 4 is always in contact with a shell locating orifice of a high-pressure shell, and two workpieces with locating aperture and depth within 2mm of each other can be accurately located by adjusting the height of the locating mandrel 4 through the spring.

As the clamping mechanism, there are four clamping cylinders 9 mounted on the clamp body 1 in a distributed manner and pressing plates 14 mounted on the clamping cylinders 9 respectively for pressing the workpiece, and each clamping cylinder 9 drives the corresponding pressing plate 14 to apply pressure to the corresponding part of the workpiece.

As an auxiliary mechanism, on the clamp body 1, an angular clamping pushing cylinder 10 is mounted on a pushing cylinder seat 12, a push rod 11 is connected to the front end of the angular clamping pushing cylinder 10 so as to prop against a workpiece to accurately position the workpiece in an angular direction, and an angular positioning device is mounted on the clamp body 1 through the pushing cylinder seat 12. Thus, the angular clamping pushing cylinder 10, the pushing rod 11 and the pushing cylinder seat 12 form an angular clamping device so as to ensure accurate angular positioning of the workpiece.

In addition, as an auxiliary mechanism, an auxiliary support seat 7 is installed on a plane of the lower portion of the clamp body 1; the hydraulic auxiliary supporting cylinder 8 is installed in the auxiliary supporting seat 7 only when one high-pressure housing member a is machined and is removed when the other high-pressure housing member B is machined.

In addition, the inside of the clamp body 1 is also provided with oil and air holes which are respectively connected with each device through a bottom surface interface at the lower part of the clamp body.

The hydraulic clamp can thus be used for machining two high-pressure housing parts separately, as shown in fig. 3 and 4.

As shown in fig. 5 and 6, two groups of positioning support seats 2 with equal heights can be provided, and an airtight detection hole 22 is formed in the plane of each positioning support seat 2 and is used for detecting whether the workpiece is installed in place, whether the clamping cylinder 9 is clamped and whether the pressing plate 14 is pressed in place, if not, airtight detection alarm is triggered due to air leakage, so that the workpiece is installed correctly.

According to the present utility model, the following characteristic technical effects can be achieved.

1. The fixture body 1 of the hydraulic fixture can use forged high-quality steel to enable mechanical property, strength, surface hardness, rust resistance and the like of the material to meet production requirements through reasonable machining process, heat treatment process, surface treatment process and the like.

2. The fixture follows six-point positioning principle, a plane is determined by a workpiece through four equal-height positioning support seats 2 arranged on a fixture body 1, a hole positioning pin seat 3 and a tapered conical positioning mandrel 4 enable the workpiece to be positioned in a main mode through springs 13, a stop pin 6 on an angular positioning seat 5 is positioned in an angular mode, when the workpiece is clamped, an angular clamping pushing cylinder 10 is firstly communicated with hydraulic oil, the workpiece is positioned in an angular accuracy mode through a push rod 11, then four clamping cylinders 9 are communicated with hydraulic oil, and a pressing plate 14 on the clamping cylinders 9 tightly presses the workpiece.

3. The lower surface of a fixture body 1 of the hydraulic fixture is connected with a working table of the machine tool, the fixture body 1 is provided with an oil path hole and an air path hole, the oil path hole and the air path hole are connected with the oil path hole and the air path hole on the working table of the machine tool, so that each path of hydraulic oil and an airtight detection hole can be smoothly connected and sealed, and the hydraulic fixture is fixed on the working table through a mounting bolt.

4. An auxiliary supporting seat 7 is arranged on the clamp body 1, a hydraulic auxiliary supporting cylinder 8 is arranged on the auxiliary supporting seat, auxiliary supporting and clamping can be carried out on a high-pressure shell part A which is positioned and installed, auxiliary supporting is not needed when another high-pressure shell part B is processed, and the auxiliary supporting seat can be detached and oil and gas holes at the installation position of the auxiliary supporting seat are blocked by a special cover plate.

5. After the workpiece is machined, the auxiliary supporting cylinder 8, the angular clamping pushing cylinder 10 and the clamping oil cylinder 9 are loosened through the hydraulic oil circuit, the machined workpiece can be taken down, and the next workpiece can be installed.

In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly, as they may be fixed, removable, or integral, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be. While the utility model has been described with reference to various specific embodiments, it should be understood that numerous changes could be made within the spirit and scope of the inventive concepts described. Accordingly, it is intended that the utility model not be limited to the described embodiments, but that it have the full scope defined by the language of the following claims.

Claims (6)

1. A hydraulic clamp with air tightness detection for use with two high pressure housing members, comprising: the clamping device comprises a clamp body (1), a uniform-height positioning support seat (2) arranged on the clamp body (1), a hole positioning pin seat (3) embedded with a conical positioning mandrel (4) with a conical part, an angular positioning seat (5) provided with baffle pins (6) for angular positioning, a plurality of clamping cylinders (9) arranged on the clamp body (1) in a distributed manner and pressing plates (14) correspondingly arranged on the clamping cylinders (9), a pushing cylinder seat (12) arranged on the clamp body (1), an angular clamping pushing cylinder (10) arranged on the pushing cylinder seat (12) and a push rod (11) connected to the front end of the angular clamping pushing cylinder (10), wherein airtight detection holes (22) are formed in the plane of the positioning support seat (2).

2. A hydraulic clamp according to claim 1, characterized in that the conical positioning spindle (4) is connected with the spring (13) by means of a screw to the hole positioning pin holder (3) in a manner that it is in clearance fit with the hole positioning pin holder (3) and is elastically movable up and down along the hole positioning pin holder (3), the hole positioning pin holder (3) being mounted on the clamp body (1).

3. Hydraulic clamp according to claim 1, characterized in that two sets of equal-height positioning support seats (2) of different heights are provided.

4. The hydraulic clamp according to claim 1, wherein the clamp body (1) is further provided with an oil passage hole for connecting hydraulic pressure and an air passage hole for connecting air pressure.

5. The hydraulic clamp according to claim 1, further comprising an auxiliary support seat (7) detachably mounted to the clamp body (1) and a hydraulic auxiliary support cylinder (8) mounted in the auxiliary support seat (7).

6. A hydraulic clamp according to claim 5, characterized in that the auxiliary support seat (7) is mounted on the plane of the lower part of the clamp body (1).