CN214418255U

CN214418255U - Knuckle anchor clamps

Info

Publication number: CN214418255U
Application number: CN202120388376.XU
Authority: CN
Inventors: 刘海龙; 范鑫; 陈志�; 邓天翼; 贾志翔; 方正强; 范思洋; 刘会莹; 吴立权; 徐佐; 武汉琦
Original assignee: CITIC Dicastal Co Ltd
Current assignee: CITIC Dicastal Co Ltd
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2021-10-19
Anticipated expiration: 2031-02-22

Abstract

The utility model relates to a machining anchor clamps technical field, the utility model provides a knuckle anchor clamps, the anchor clamps main part has designed the contained angle and has been two obtuse anchor clamps bottom plates, two clamping face promptly, make the work piece put the gesture and can not exceed the biggest envelope body, can not interfere with the lathe, all in the main shaft stroke, in addition, first main pressure cylinder has been designed, the second owner compresses tightly the hydro-cylinder, first locating pin and second locating pin, make anchor clamps press from both sides tight knuckle from bearing hole and first support hole accuracy clamp, avoid pressing from both sides the machining error that tightly causes because of not, make the work piece can only be placed according to fixed position simultaneously, it is accurate to have ensured work piece repeated positioning.

Description

Knuckle anchor clamps

Technical Field

The application relates to the technical field of machining fixtures, in particular to a fixture for aluminum-cast automobile parts in machining of a five-axis numerical control machining center, and particularly relates to a steering knuckle fixture.

Background

For a steering knuckle product in an automobile chassis system, in a machining process, mainly due to the structure of the product, for example: the problems that products exceed the range of the main shaft stroke of a machine tool or a machining workbench is limited by a maximum enveloping body occur when special parts such as a shock absorber hole, a steering pull rod hole and the like are machined. In order to prevent collision with a back plate or other parts of a machine tool rotary table, processing cannot be finished in one step. In the conventional process development, in order to solve the problems and avoid interference, in the machining process, one tool can only clamp one part to be machined at a time, namely, one product is machined every time. How to improve the clamping efficiency of the existing machine tool clamp under the condition that the stroke and the corner of a main shaft of the machine tool are limited becomes a primary problem. In the machining process, efficiency is the first factor, and the beat is efficiency, and the beat is cost, and how to improve the machining efficiency, how to improve the efficiency of a machine tool, and how to save cost are important subjects in the field.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a steering knuckle clamp which can solve the problems in the background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a steering knuckle clamp, which comprises a clamp main body, a first main compression oil cylinder, a second main compression oil cylinder, a first positioning pin and a second positioning pin, wherein the top of the clamp main body comprises two clamp bottom plates with obtuse included angles, and the two clamp bottom plates are inclined downwards from the contact part; a first main pressing oil cylinder is arranged on the position, corresponding to the bearing hole of the steering knuckle, of the clamp bottom plate and is used for pressing the bearing hole of the steering knuckle; a second main pressing oil cylinder and a first positioning pin are arranged on the clamp bottom plate corresponding to the position of the first support hole of the steering knuckle, and a second positioning pin is arranged on the clamp bottom plate corresponding to the position of the second support hole of the steering knuckle; the second main pressing oil cylinder is used for pressing the first support hole from the upper side, the first positioning pin is used for positioning the first support hole from the lower side, and the second positioning pin is used for positioning the second support hole from the lower side.

In some embodiments, the clamp base plate is provided with a first clamp hole and a second clamp hole, the first clamp hole is used for installing the first main pressing cylinder, and the second clamp hole is used for installing the second main pressing cylinder.

In some embodiments, the first main pressing cylinder comprises a cylinder barrel, a first cylinder piston, a sealing element, a piston rod, a first pressing head, a second pressing head and a cylinder end cover, wherein a first oil hole and a second oil hole are formed in the cylinder end cover; the top end of a piston rod of the first oil cylinder piston is branched into a first rod and a second rod, the first rod and the second rod penetrate through a through hole formed in the end cover of the oil cylinder, the first pressure head is fixed on the first rod, and the second pressure head is fixed on the second rod; and a sealing element is arranged at the contact position of the first oil cylinder piston and the inner side wall of the cylinder barrel.

In some embodiments, the sealing element is a two-ring annular sealing ring, the cylinder piston is provided with two rings of sealing grooves, and the sealing ring is arranged in the sealing groove.

In some embodiments, the second main pressing cylinder comprises a cylinder pressing claw, a cylinder rod, a cylinder body, a cylinder mounting seat and a sealing plate, wherein a third oil hole and a fourth oil hole are formed in the cylinder mounting seat, the cylinder mounting seat is used for fixing the cylinder body, the bottom of the cylinder body is sealed through the sealing plate, and the third oil hole and the fourth oil hole are both communicated with an inner cavity of the cylinder body; one of the third oil hole and the fourth oil hole is used as an oil inlet hole, and the other is used as an oil outlet hole; the bottom end of the cylinder rod is positioned in the inner cavity of the cylinder body of the oil cylinder, and the top end of the cylinder rod is fixed with an oil cylinder pressing claw.

In some embodiments, the clamp body is further provided with a first coarse positioning rod, a second coarse positioning rod, and a mistake-proofing post.

In some embodiments, the clamp base plate is further provided with a detachable positioning seat, and the positioning seat is provided with a detachable adjusting sheet.

In some embodiments, the clamp bottom plate is further provided with a lifting ring.

In some embodiments, a cylinder end cover of the first main pressing cylinder on the clamp bottom plate is provided with a gas detection hole.

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

the utility model provides a knuckle anchor clamps, the anchor clamps main part has designed the contained angle and has been two obtuse anchor clamps bottom plates, two clamping face promptly, make the work piece put the gesture and can not exceed the biggest envelope body, can not interfere with the lathe, all in the main shaft stroke, in addition, first main pressure cylinder has been designed, the second main pressure cylinder, first locating pin and second locating pin, make anchor clamps press from both sides tight knuckle from bearing hole and first support hole accuracy clamp, avoid pressing from both sides the machining error that tightly causes because not, make the work piece can only be placed according to fixed position simultaneously, it is accurate to have ensured work piece repeated positioning.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a front view of a knuckle clamp of the present application.

FIG. 2 is a top view of a knuckle clamp of the present application.

FIG. 3 is a schematic view of a knuckle clamp of the present application with a knuckle placed thereon.

FIG. 4 is a schematic structural diagram of a first master holding-down cylinder of a knuckle clamp according to the present application.

FIG. 5 is a perspective view of a first master holding-down cylinder of a knuckle clamp of the present application.

FIG. 6 is a top view of a first master hold-down cylinder of a knuckle clamp of the present application.

Fig. 7 is a schematic view of an installation structure of a first master compression cylinder of a knuckle clamp according to the present application.

FIG. 8 is a schematic structural diagram of a second master holding-down cylinder of a knuckle clamp according to the present application.

FIG. 9 is a perspective view of a second master holding down cylinder of a knuckle clamp of the present application.

FIG. 10 is a top view of a second master hold-down cylinder of a knuckle clamp of the present application.

FIG. 11 is a schematic view of a mounting structure of a second master holding-down cylinder of a knuckle clamp according to the present application.

Wherein: 1-clamp main body, 2-clamp bottom plate, 3-first workpiece, 4-second workpiece, 5-first main pressing oil cylinder, 501-cylinder barrel, 502-first oil cylinder piston, 503-sealing element, 504-piston rod, 505-first oil hole, 506-first pressure head, 507-second pressure head, 508-oil cylinder end cover, 509-second oil hole, 510-first chamber, 511-second chamber, 6-first clamp hole, 7-first bracket hole, 8-second bracket hole, 9-second main pressing oil cylinder, 901-oil cylinder pressing claw, 902-cylinder rod, 903-oil cylinder body, 904-oil cylinder mounting seat, 905-sealing plate, 906-third oil hole, 907-fourth oil hole, 10-second clamp hole, 11-a first positioning pin, 12-a second positioning pin, 13-a first coarse positioning rod, 14-a second coarse positioning rod, 15-a mistake-proofing column, 16-a positioning seat, 17-an adjusting sheet and 18-a hanging ring.

Detailed Description

The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example 1:

as shown in fig. 1 to 11, the present application provides a hydraulic clamp for a composite angle knuckle, which includes a clamp main body 1, a first main pressing cylinder 5, a second main pressing cylinder 9, a first positioning pin 11, a second positioning pin 12, a first coarse positioning rod 13, a second coarse positioning rod 14, a mistake-proofing column 15, a positioning seat 16, an adjusting piece 17, and a hanging ring 18.

As shown in fig. 1 to 3, the top of the clamp body 1 includes two clamp bottom plates 2 with an obtuse angle, and the two clamp bottom plates 2 are inclined downwards from the contact portion. The left clamp bottom plate and the right clamp bottom plate 2 are respectively used for placing a first workpiece 3 (steering knuckle) and a second workpiece 4 (steering knuckle), and bearing mounting surfaces of the first workpiece 3 and the second workpiece 4 are respectively parallel to the clamp bottom plates 2.

As shown in fig. 2 and 4-7, a first main pressing cylinder 5 is arranged on the clamp base plate 2 at a position corresponding to a bearing hole of the knuckle, the first main pressing cylinder 5 is used for pressing the bearing hole of the knuckle, and the first main pressing cylinder 5 is non-standard. The first main pressing cylinder 5 comprises a cylinder barrel 501, a first cylinder piston 502, a sealing member 503, a piston rod 504, a first pressure head 506, a second pressure head 507 and a cylinder end cover 508, wherein a first oil hole 505 and a second oil hole 509 are formed in the cylinder end cover 508. The fixture base plate 2 is provided with a first fixture hole 6, the cylinder 501 is externally provided with threads and fixed in the first fixture hole 6 in a threaded insertion manner. The cylinder barrel 501 is sealed by the cylinder end cover 508, a first cylinder piston 502 is arranged in the cylinder barrel 501, the cylinder barrel 501 is divided into a first chamber 510 and a second chamber 511 by the first cylinder piston 502, the first chamber 510 is communicated with the first oil hole 505, and the second chamber 511 is communicated with the second oil hole 509. The top end of a piston rod 504 of the first oil cylinder piston 502 is bifurcated into a first rod and a second rod, the first rod and the second rod penetrate through a through hole formed in an oil cylinder end cover 508, the first pressure head 506 is fixed on the first rod, and the second pressure head 507 is fixed on the second rod. A sealing member 503 is arranged at the contact position of the first cylinder piston 502 and the inner side wall of the cylinder barrel 501, and the sealing member 503 is a two-ring annular sealing ring. Two circles of seal grooves are formed in the oil cylinder piston, and the seal ring is arranged in the seal groove.

As shown in fig. 2 and 8-11, a second main pressing cylinder 9 is arranged on the clamp base plate 2 at a position corresponding to the first bracket hole 7 of the steering knuckle. The second main pressing cylinder 9 comprises a cylinder pressing claw 901, a cylinder rod 902, a cylinder body 903, a cylinder mounting seat 904 and a sealing plate 905, wherein a third oil hole 906 and a fourth oil hole 907 are formed in the upper surface of the cylinder mounting seat 904. And a second clamp hole 10 is formed in the clamp bottom plate 2, and the oil cylinder body 903 is fixedly arranged in the second clamp hole 10 through an oil cylinder mounting seat 904. The bottom of the cylinder body 903 is sealed by a sealing plate 905, the third oil hole 906 and the fourth oil hole 907 are both communicated with the inner cavity of the cylinder body 903, one of the third oil hole 906 and the fourth oil hole 907 serves as an oil inlet, and the other one serves as an oil outlet. The bottom end of the cylinder rod 902 is positioned in the inner cavity of the cylinder body 903, and the top end of the cylinder rod 902 is fixed with a cylinder pressure claw 901.

As shown in fig. 1 to 3, a first positioning pin 11 is disposed on the clamp base plate 2 at a position corresponding to the first bracket hole 7 of the knuckle, and a second positioning pin 12 is disposed at a position corresponding to the second bracket hole 8 of the knuckle. The second main pressing oil cylinder 9 is used for pressing the first support hole 7 from the upper side, the first positioning pin 11 is used for positioning the first support hole 7 from the lower side, and the second positioning pin 12 is used for positioning the second support hole 8 from the lower side. The bottom surfaces of the first positioning pin 11, the second positioning pin 12 and the oil cylinder end cover of the first main pressing oil cylinder 5 are located on the same plane, so that the workpiece is parallel to the clamp bottom plate. The side surfaces of the first positioning pin 11 and the second positioning pin 12 are cylinders, and angular positioning of the workpiece is formed.

As shown in fig. 1 to 3, the jig main body 1 is further provided with a first rough positioning rod 13, a second rough positioning rod 14, and a mistake-proofing post 15. The first rough positioning rod 13 and the second rough positioning rod 14 are used for rough positioning of the workpiece. The mistake proofing post 15 enables the workpiece to be placed only according to a fixed position, and guarantees that the workpiece is accurately positioned repeatedly.

As shown in fig. 1-3, a plurality of detachable positioning seats 16 are further disposed on the bottom plate of the fixture, and a detachable adjustment sheet 17 is disposed on the positioning seat 16, so that the fixture can be adjusted locally and fixed more firmly.

As shown in fig. 1 to 3, the clamp base plate 2 is further provided with a hanging ring 18, which facilitates the lifting movement of the clamp on the production line.

The design of direction mistake proofing device in this embodiment 1, the workman of being convenient for places the work piece. In addition, in this embodiment, still be provided with gaseous inspection hole on anchor clamps bottom plate or on the hydro-cylinder end cover of first main pressure cylinder, integrated gaseous detection function, a great deal of mechanism cooperatees and has guaranteed that the workman can not misload and neglected loading.

In the embodiment, the hydraulic clamp for the steering knuckle with the composite angle comprises the following steps in the use process: firstly, setting an angle of a machine tool machining turntable, opening a machine tool protective door, placing a steering knuckle on a clamp bottom plate on the right side of a clamp, pressing by an oil cylinder, and feeding back a completion state by a gas detection device; secondly, pressing the right part tightly, and closing the machine tool door; thirdly, rotating the 90-degree clamp, and placing the steering knuckle on the left side in the same step; fourthly, closing the protective door and pressing the left part; and fifthly, rotating the workbench to enter the machining side without interference for machining.

Two clamp bottom plates with obtuse included angles, namely two clamping surfaces, are designed in the embodiment 1, so that the workpiece placing posture cannot exceed the maximum enveloping body, cannot interfere with a machine tool, and is in the stroke of the main shaft.

In the hydraulic clamp for the steering knuckle with the composite angle in the embodiment 1, the pressing oil ways of the left workpiece and the right workpiece are separated through the design of the internal hydraulic oil ways, so that the two parts can independently act, the workpieces can be independently tightened, and the hydraulic clamp is convenient for workers to go on and off the production line. In addition, a main compression oil cylinder of a non-standard system is designed, the compact thread plug-in type oil cylinder integrates two compression points and is fixed on a piston rod of the oil cylinder, and oil passages of a rodless cavity and a rod cavity of the oil cylinder are respectively communicated through a built-in oil passage in the cylinder body, so that the work of the oil cylinder is ensured.

Two compact positioning mechanism in this embodiment 1, first locating pin and second locating pin promptly have two functions: main positioning support and angular positioning. In this way, the bottom surface supporting points of the first main pressing oil cylinder form three points, namely a plane, a main positioning and an angular positioning, and the position of the workpiece is fixed.

The implementation of the technical scheme of the invention solves the problem that under the condition that the stroke and the corner of the main shaft (the maximum processing enveloping body of the machine tool) are limited, the purpose of accurately placing two workpieces for fixed processing at one time is achieved by designing the structure of the clamp and independently designing the specially-made oil cylinder and the combined type positioning device, thereby reducing the labor intensity of workers and improving the working efficiency of machining the machine tool.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A steering knuckle clamp is characterized by comprising a clamp main body, a first main pressing oil cylinder, a second main pressing oil cylinder, a first positioning pin and a second positioning pin,

the top of the clamp main body comprises two clamp bottom plates with an obtuse included angle, and the two clamp bottom plates are inclined downwards from the contact part;

a first main pressing oil cylinder is arranged on the position, corresponding to the bearing hole of the steering knuckle, of the clamp bottom plate and is used for pressing the bearing hole of the steering knuckle;

a second main pressing oil cylinder and a first positioning pin are arranged on the clamp bottom plate corresponding to the position of the first support hole of the steering knuckle, and a second positioning pin is arranged on the clamp bottom plate corresponding to the position of the second support hole of the steering knuckle;

the second main pressing oil cylinder is used for pressing the first support hole from the upper side, the first positioning pin is used for positioning the first support hole from the lower side, and the second positioning pin is used for positioning the second support hole from the lower side.

2. The knuckle clamp of claim 1, wherein the clamp base plate is provided with a first clamp hole and a second clamp hole, the first clamp hole is used for mounting the first master compression cylinder, and the second clamp hole is used for mounting the second master compression cylinder.

3. The knuckle clamp as claimed in claim 1, wherein the first main compression cylinder comprises a cylinder barrel, a first cylinder piston, a sealing member, a piston rod, a first pressure head, a second pressure head, and a cylinder end cover, wherein the cylinder end cover is provided with a first oil hole and a second oil hole, threads are arranged outside the cylinder barrel, the cylinder end cover seals the cylinder barrel, the cylinder barrel is internally provided with the first cylinder piston, the cylinder barrel is divided into a first chamber and a second chamber by the first cylinder piston, the first chamber is communicated with the first oil hole, and the second chamber is communicated with the second oil hole; the top end of a piston rod of the first oil cylinder piston is branched into a first rod and a second rod, the first rod and the second rod penetrate through a through hole formed in the end cover of the oil cylinder, the first pressure head is fixed on the first rod, and the second pressure head is fixed on the second rod; and a sealing element is arranged at the contact position of the first oil cylinder piston and the inner side wall of the cylinder barrel.

4. The knuckle clamp of claim 3, wherein the sealing element is a two-ring annular sealing ring, the cylinder piston is provided with two sealing grooves, and the sealing ring is disposed in the sealing groove.

5. The knuckle clamp according to claim 1, wherein the second main compression cylinder comprises a cylinder pressing claw, a cylinder rod, a cylinder body, a cylinder mounting seat and a sealing plate, wherein a third oil hole and a fourth oil hole are formed in the cylinder mounting seat, the cylinder mounting seat is used for fixing the cylinder body, the bottom of the cylinder body is sealed through the sealing plate, and the third oil hole and the fourth oil hole are both communicated with an inner cavity of the cylinder body; one of the third oil hole and the fourth oil hole is used as an oil inlet hole, and the other is used as an oil outlet hole; the bottom end of the cylinder rod is positioned in the inner cavity of the cylinder body of the oil cylinder, and the top end of the cylinder rod is fixed with an oil cylinder pressing claw.

6. The knuckle clamp of claim 1 wherein the clamp body is further provided with a first coarse positioning rod, a second coarse positioning rod and a mistake proofing post.

7. The knuckle clamp of claim 1 further comprising a removable alignment seat on the clamp base plate, the alignment seat having a removable tab thereon.

8. The knuckle clamp of claim 1 wherein said clamp base plate further comprises a bail.

9. The knuckle clamp of claim 1 wherein said clamp base plate has a gas detection hole in the cylinder end cap of said first master compression cylinder.