CN218397115U - Nodular cast iron foundry goods clamping instrument - Google Patents

Abstract

The utility model provides a nodular cast iron foundry goods clamping instrument, include: the base comprises a bottom plate and a workpiece bearing structure arranged in the middle of the bottom plate; the two thumb cylinders are respectively arranged on the bottom plate and are respectively positioned at two sides of the workpiece bearing structure, and clamping jaws are arranged on the thumb cylinders so as to clamp and fix the casting to be machined in a region where the casting to be machined does not expand; the positioning baffle is arranged on one side of the bottom plate and is fixedly connected with the adjacent thumb cylinder; spacing briquetting sets up in work piece bearing structure's top, and spacing briquetting detachably installs on closing device's the cylinder that compresses tightly, and bottom plate detachably installs on closing device's work platform. Through the technical scheme of the utility model for the work piece is difficult not hard up when the turning, thereby effectively avoids the inclined to one side defect of car that becomes flexible when cutting because of the work piece and cause, reduces the processing rejection rate of "case" product rises.

Description

Nodular cast iron foundry goods clamping instrument

Technical Field

The utility model relates to a nodular cast iron work piece processing appurtenance technical field particularly, relates to a nodular cast iron foundry goods clamping instrument.

Background

At present, in the casting process of a bearing seat, because a sand mold is a stacked casting mold, in the molten iron mold filling process of nodular cast iron, a top product is easy to cause the defect of box expansion due to overlarge buoyancy force, and the defect of the box expansion is that the middle of a casting is thick, two sides of the casting are thin, and the sizes of the castings are different. In the related art, the conventional 'positioning groove + cylinder pressing' tool is generally adopted for clamping production, and the following technical defects exist:

(1) If the size of the positioning groove is defined according to the theoretical standard size, the product of the 'box expansion' cannot be pressed into the positioning groove for processing;

(2) If the constant head tank size is for guaranteeing "case" product that rises all can process and when designing too big, then rock after making normal product the constant head tank of impressing, lead to the location to be inaccurate to cause the car to scrap partially easily, and "case" product that rises impresses behind the constant head tank, middle wall thickness position and constant head tank are point contact or line contact, poor stability, the foundry goods both sides can vibrate under rotary cutter's drive when adding man-hour, cause the car to arouse the waste product partially or the vibration line, thereby lead to the product percent of pass to be low, high in production cost.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

Therefore, an object of the utility model is to provide a nodular cast iron foundry goods clamping instrument through the design of two thumb cylinders, makes its clamping jaw centre gripping not have "case" that rises regional at the foundry goods to when making the different foundry goods of clamping, all be in standard position, make the work piece difficult not hard up when the turning, thereby effectively avoid the car partial defect because of not hard up when the work piece cutting causes, reduce the processing rejection rate of "case" product that rises.

In order to realize the above purpose, the technical scheme of the utility model a nodular cast iron foundry goods clamping instrument is provided, include: the base comprises a bottom plate and a workpiece bearing structure arranged in the middle of the bottom plate; the two thumb cylinders are respectively arranged on the bottom plate and are respectively positioned at two sides of the workpiece bearing structure, and clamping jaws are arranged on the thumb cylinders so as to clamp and fix the casting to be machined in the area where the casting to be machined does not expand; the positioning baffle is arranged on one side of the bottom plate and is fixedly connected with the adjacent thumb cylinder; the limiting pressing block is arranged above the workpiece bearing structure, the limiting pressing block is detachably mounted on a pressing cylinder of the pressing device, and the bottom plate is detachably mounted on a working platform of the pressing device.

Preferably, the width of the workpiece bearing structure is not less than the width of the 'expansion box' defect part structure of the casting to be processed and not more than the whole width of the casting to be processed.

Preferably, a hard rubber layer is bonded on the clamping jaw.

Preferably, the workpiece bearing structure is provided with lightening holes, and a plane structure is arranged above the workpiece bearing structure.

Preferably, the base plate and the workpiece bearing structure are integrally formed, the thumb cylinder is fixedly connected to the base plate through a bolt, and the positioning baffle is fixedly connected to the thumb cylinder through a bolt.

The utility model provides a nodular cast iron foundry goods clamping instrument has following beneficial technological effect:

(1) The utility model provides a nodular cast iron foundry goods clamping instrument adopts the design of two thumb cylinders, and the clamping jaw centre gripping of two thumb cylinders does not have "case" region that rises at the foundry goods to when making the different foundry goods of clamping, all be in standard position, moreover, adopt the multiaspect clamping, make the work piece difficult not hard up when the turning, and then the inclined to one side defect of car that not hard up caused when having avoided because of the work piece cutting in the at utmost.

(2) The utility model provides an in nodular cast iron foundry goods clamping instrument at a side-mounting location baffle of bottom plate, be favorable to waiting to process the effective position that the work piece bearing structure was placed to the foundry goods, the location of the spacing briquetting of being convenient for pushes down for the area processing foundry goods all receives pressure in X, Y direction, and the firm difficult vibration of location or not hard up, the reduction of very big degree processing appearance defects.

(3) The utility model provides an in nodular cast iron foundry goods clamping instrument to work piece bearing structure's width design, define by the size of treating "case" defect that rises of processing foundry goods to, the position of getting is got for not "case" region rises to the clamping jaw that has ensured the thumb cylinder, and then, has ensured to press from both sides the relative unity of its position when getting different foundry goods, and then has reduced the inclined to one side probability of car when the work piece cuts.

(4) The utility model provides a bonding stereoplasm rubber layer on thumb cylinder clamping jaw in nodular cast iron casting clamping instrument can effectively increase the frictional force between clamping jaw and the foundry goods to, the foundry goods misplaces along with the work track of lathe tool when avoiding the turning, has reduced the outward appearance waste product.

(5) The utility model provides a work piece bearing structure sets up the lightening hole in nodular cast iron foundry goods clamping instrument, and its top sets up to planar structure, and the placing of the different foundry goods of being convenient for can subtract heavy to the clamping instrument by the at utmost in addition, reduces the intensity of labour who changes clamping instrument.

(6) Adopt the utility model provides a nodular cast iron foundry goods clamping instrument is reduced to about 5% by 58% to the processing defect (car partially, lines of vibration etc.) rejection rate of "rising case" foundry goods, very big promotion the yield of product, reduced manufacturing cost, promoted the competitiveness in nodular cast iron product market.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic structural view of a ductile cast iron casting clamping tool according to an embodiment of the present invention;

figure 2 shows a schematic structural view of a nodular cast iron casting clamping tool according to one embodiment of the present invention in a state of clamping the casting,

wherein, the corresponding relation between the reference numbers and the components in fig. 1 and fig. 2 is as follows:

102 base, 1022 bottom plate, 1024 workpiece bearing structure, 104 thumb cylinder, 106 clamping jaws, 108 positioning baffle plates, 110 limiting pressing blocks, 112 hard rubber layers, 114 lightening holes and 116 to-be-machined castings.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A ductile cast iron casting clamping tool according to an embodiment of the present invention will be specifically described with reference to fig. 1 and 2.

As shown in fig. 1 and fig. 2, a clamping tool for ductile cast iron castings according to an embodiment of the present invention includes a base 102, a thumb cylinder 104, a positioning baffle 108, a limiting pressing block 110, and the like. The base 102 includes a base plate 1022 and a workpiece-carrying structure 1024 disposed between the base plate 1022, wherein the base plate 1022 and the workpiece-carrying structure 1024 can be integrally formed or fixedly connected. Two thumb cylinders 104 are respectively installed on the bottom plate 1022, and are respectively located at two sides of the workpiece bearing structure 1024, clamping jaws 106 are installed on the thumb cylinders 104, and the casting 116 to be machined is clamped and fixed in the area where the casting 116 to be machined does not expand, so that the casting 116 to be machined is in a standard position when different castings are clamped, and moreover, multi-surface clamping is adopted, so that the workpiece is not easy to loosen during turning, and the defect of deviation caused by loosening during workpiece cutting is avoided to the maximum extent. At one side installation location baffle 108 of bottom plate 1022, location baffle 108 and adjacent thumb cylinder 104 fixed connection are favorable to placing the effective position of work piece bearing structure 1024 with treating processing foundry goods 116, and the location of the spacing briquetting 110 of being convenient for is pushed down for the area processing foundry goods all bears the pressure in X, Y direction, and the firm difficult vibration of location or not hard up, the reduction of very big degree processing appearance defects. Spacing briquetting 110 sets up in the top of work piece bearing structure 1024, and spacing briquetting 110 detachably installs on closing device's the cylinder that compresses tightly, drives by compressing tightly the cylinder and realizes pushing down the action, and bottom plate 1022 detachably installs on closing device's work platform to realized installing this nodular cast iron foundry goods clamping instrument in closing device, with the closing device cooperation, realized compressing tightly the location of foundry goods, and difficult skew.

Further, as shown in FIGS. 1 and 2, the width of the workpiece support structure 1024 is not less than the width of the "expanded box" defect portion structure of the casting 116 to be machined and not greater than the overall width of the casting 116 to be machined. The width of the workpiece bearing structure 1024 is defined by the size of the "box expansion" defect of the casting 116 to be machined, so that the clamping position of the clamping jaw 106 of the thumb cylinder 104 is ensured to be an area without the "box expansion", further, the relative uniformity of the positions of the clamping jaws when clamping different castings is ensured, and further, the turning deviation probability of the workpiece during cutting is reduced.

Further, as shown in fig. 1, the hard rubber layer 112 is bonded on the clamping jaw 106, so that the friction force between the clamping jaw 106 and the casting can be effectively increased, thereby avoiding the displacement of the casting along with the working track of the turning tool during turning and reducing appearance waste.

Further, as shown in fig. 1 and fig. 2, the workpiece bearing structure 1024 is provided with lightening holes 114, and the upper part of the workpiece bearing structure is provided with a planar structure, so that different castings can be conveniently placed, the weight of the clamping tool can be reduced to the greatest extent, and the labor intensity of replacing the clamping tool is reduced.

Further, the base plate 1022 is integrally formed with the workpiece support structure 1024, the thumb cylinder 104 is fixedly connected to the base plate 1022 through a bolt, and the positioning baffle 108 is fixedly connected to the thumb cylinder 104 through a bolt. Therefore, the whole firm stability of the nodular cast iron casting clamping tool is guaranteed, and the positioning stability of the casting is further guaranteed.

The utility model provides a nodular cast iron foundry goods clamping instrument's use as follows: installing the limiting pressing block 110 on a pressing cylinder of the pressing device, and installing the bottom plate 1022 on a working platform of the pressing device; placing the casting 116 to be machined on the workpiece-carrying structure 1024 with one side thereof against the positioning fence 108; controlling the thumb cylinder 104 to enable the clamping jaw 106 to clamp the casting and clamp the casting in the area where the casting 116 to be machined does not expand, and controlling the pressing cylinder to enable the limiting pressing block 110 to press the casting; turning by starting the lathe, resetting the thumb cylinder 104 and the pressing cylinder after turning is finished, and circulating in this way.

Adopt the utility model provides a nodular cast iron foundry goods clamping instrument is reduced to about 5% by 58% to the processing defect (car inclined to one side, lines of vibration etc.) rejection rate of "box" foundry goods that rises, very big promotion the yield of product, reduced manufacturing cost, promoted the competitiveness in nodular cast iron product market.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a nodular cast iron foundry goods clamping instrument which characterized in that includes: the base comprises a bottom plate and a workpiece bearing structure arranged in the middle of the bottom plate; the two thumb cylinders are respectively arranged on the bottom plate and are respectively positioned at two sides of the workpiece bearing structure, and clamping jaws are arranged on the thumb cylinders so as to clamp and fix the casting to be machined in the area where the casting to be machined does not expand; the positioning baffle is arranged on one side of the bottom plate and is fixedly connected with the adjacent thumb cylinder; the limiting pressing block is arranged above the workpiece bearing structure, the limiting pressing block is detachably mounted on a pressing cylinder of the pressing device, and the bottom plate is detachably mounted on a working platform of the pressing device.

2. The ductile iron casting clamping tool according to claim 1,

the width of the workpiece bearing structure is not less than the width of the 'box expansion' defect part structure of the casting to be processed and not more than the whole width of the casting to be processed.

3. The ductile iron casting clamping tool according to claim 1,

and a hard rubber layer is bonded on the clamping jaw.

4. The ductile iron casting clamping tool according to claim 1,

the workpiece bearing structure is provided with lightening holes, and a plane structure is arranged above the workpiece bearing structure.

5. The spheroidal graphite cast iron casting clamping tool according to any one of claims 1 to 4, wherein,

the base plate and the workpiece bearing structure are integrally formed, the thumb cylinder is fixedly connected to the base plate through a bolt, and the positioning baffle is fixedly connected with the thumb cylinder through a bolt.

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