CN218556314U - Universal clamping tool for transverse machining of short shaft parts - Google Patents

Abstract

The utility model provides a general clamping instrument that is used for minor axis class part recumbent processing, include: the V-shaped seat body, the positioning support assembly and the fastening assembly; the positioning support assembly is arranged on the end face of the V-shaped seat body; the fastening assembly is used for fastening a workpiece to be processed on the V-shaped seat body; the fastening assembly includes any one or any plurality of: the first pressure plate assembly is arranged on two sides of the upper plane of the V-shaped seat body and used for fastening a small workpiece to be machined; the second pressing plate assemblies are arranged on two sides of the upper plane of the V-shaped seat body and used for fastening a medium-sized workpiece to be machined; and two ends of the chain locking assembly are respectively arranged on two side surfaces of the V-shaped seat body and used for fastening a large workpiece to be processed.

Description

Universal clamping tool for transverse machining of short shaft parts

Technical Field

The utility model relates to a machining technical field specifically relates to a general clamping instrument that is used for minor axis class part to crouch processing.

Background

In the machining process, a short shaft-shaped part has larger weight and both ends need to be machined. For example, in the crosshead pin of a marine low-speed diesel engine, the weight of the crosshead pin of various types is large (600-6000 Kg), the size and the span of external dimensions such as diameter (phi 400-phi 900 mm) and length (650-1200 mm) are large, and both ends and multiple orientations of an excircle are required to be processed. In the prior art, when such parts are subjected to boring and milling processing, generally, a V-shaped iron with a proper size is selected as a base to support a short shaft-shaped part, then a T-shaped groove on a machine tool workbench is utilized to lap and press a fastening workpiece by a T-shaped groove bolt pressing plate assembly, after the processing in the direction is finished, the workpiece is lifted by a hoisting device to be replaced and clamped again, and then the processing of other parts is performed. The clamping method is usually used for completing all processing of workpieces and needs to replace and clamp for multiple times, so that the existing clamping process method usually has the following technical problems:

1. when the whole machining of the workpiece is finished, multiple transposition and clamping are often needed, and the problems of low operation efficiency, high labor intensity of operators and the like exist;

2. the lifting operation is frequent, and the production efficiency of the whole operation area is directly influenced;

3. the V-shaped iron with the corresponding model and the T-shaped groove bolt and the pressing plate assembly with the corresponding model are adopted, and the V-shaped iron with various corresponding models and other pressing tools which are large and small need to be equipped for a machine tool for processing a series of short shaft parts, so that the production cost is high.

Disclosure of Invention

The utility model provides an above-mentioned not enough to exist among the prior art, provides a general clamping instrument of minor axis class part processing of crouching and clamping method thereof, belongs to an auxiliary tool and fixture, can be to like the machining such as crouching boring and milling is carried out to minor axis class series work piece that weight such as the cross head round pin of marine low-speed diesel engine is great, external diameter size differs, both ends all must process.

The utility model discloses a realize through following technical scheme.

According to the utility model discloses an aspect provides a general clamping instrument that is used for processing of minor axis class part crouching, a serial communication port, include: the V-shaped seat body, the positioning support assembly and the fastening assembly; in a working state, the positioning support assembly is arranged on one end face of the V-shaped seat body; the fastening assembly is used for fastening a workpiece to be processed on the V-shaped seat body; wherein:

the fastening assembly comprises any one or more of the following structural members:

the first pressure plate assembly is arranged on the near-V-shaped surfaces on two sides of the upper plane of the V-shaped seat body in the working state and used for fastening a first workpiece to be processed;

the second pressure plate assemblies are arranged on the two side near surfaces of the upper plane of the V-shaped seat body in the working state and used for fastening a second workpiece to be machined;

-a chain locking assembly, the two ends of which are respectively mounted on the two sides of the V-shaped seat body in an operating state, for fastening a third workpiece to be machined;

the height of the first platen assembly is less than the height of the second platen assembly; the outer diameter of the first workpiece to be machined is smaller than that of the second workpiece to be machined, and the outer diameter of the second workpiece to be machined is smaller than that of the third workpiece to be machined.

Optionally, the V-shaped seat is a carrying chassis of the fixture; wherein:

the center of the plane on the bearing chassis is symmetrically provided with a first bearing surface and a second bearing surface which are arranged in a 120-degree V-shaped angle, so that the bearing chassis has a wider clamping size range;

positioning support component mounting holes are formed in two end faces of the bearing chassis and used for mounting the positioning support components;

two groups of chain locking and mounting holes are symmetrically formed in the positions of the proximal end parts of the two side surfaces of the bearing chassis, and the chain locking and mounting holes are used for mounting the chain locking assemblies;

a group of first lapping screw holes which are symmetrically arranged and a group of second lapping screw holes which are symmetrically arranged are arranged at four corners of two sides of a first bearing surface and a second bearing surface which are arranged at a V-shaped angle on the upper plane of the bearing chassis, the first lapping screw holes are used for installing the first pressure plate assembly, and the second lapping screw holes are used for installing the second pressure plate assembly;

a cavity hole for reducing weight is formed in the bearing chassis;

the lower parts of the upper two side surfaces of the bearing chassis are respectively provided with two clamping grooves, and the clamping grooves are used for mounting the V-shaped seat body on a machine tool workbench.

Optionally, the bearing chassis is made of nodular cast iron.

Optionally, the positioning support assembly comprises: the positioning support seat, the connecting screw and the fastening screw are arranged; wherein:

the positioning support seat is a welding assembly and comprises a plate-shaped support block and three vertically welded support rods;

a through screw hole is formed in the position, above the plate-shaped supporting block, of the positioning supporting seat, and the screw hole is used for mounting the fastening screw;

the positioning support seat is provided with through bolt holes at the center positions of the three support rods for the installation of the connecting screws;

the supporting rod on the positioning supporting seat is in close contact with the V-shaped seat body;

the connecting screw is used for installing the position supporting seat on the end face of the V-shaped seat body;

the fastening screw is used for axially positioning and supporting the workpiece to be processed.

Optionally, the first platen assembly and the second platen assembly each comprise: the lapping stud, the lapping nut, the lapping washer and the pressing plate are arranged on the base; wherein:

the lapping stud is a stud with the same thread specification at two ends, and the length of the lapping stud of the first pressure plate component is smaller than that of the lapping stud of the second pressure plate component;

bolt holes are formed in the end portions of the two ends of the pressing plate, the bolt holes are used for enabling the lapping studs to penetrate through and be installed, the lapping studs are locked by the lapping washers and the lapping nuts, and the length of the pressing plate of the first pressing plate assembly 3 is smaller than that of the pressing plate of the second pressing plate assembly 4.

Optionally, the chain locking assembly comprises: the chain comprises a chain lock seat, a tightening nut, a gasket, a tightening screw and a chain with a detachable chain buckle; wherein:

the chain lock seat is of an L-shaped block structure, a bolt hole is formed in the long side surface of the chain lock seat and used for connecting the chain lock seat to the side surface of the V-shaped seat body, and a bolt hole is formed in the other side surface of the chain lock seat and used for installing the tightening screw rod;

and two ends of the chain with the detachable chain buckle are respectively connected with the other end of one tightening screw rod.

Optionally, the first workpiece to be processed is: the outer diameter is less than or equal to 500mm; the second workpiece to be processed is: 500mm < outer diameter <600mm; the third workpiece to be processed is: the outer diameter is more than or equal to 600mm.

According to another aspect of the present invention, there is provided a clamping method of the universal clamping tool, comprising:

placing the V-shaped seat body of the universal clamping tool at the middle position on a workbench of a machining center, leveling the end surface of the V-shaped seat body or straightening the side surface of the V-shaped seat body, and fixing the V-shaped seat body on the workbench;

hoisting a workpiece to be processed to a V-shaped angle of the V-shaped seat body, and enabling the two ends of the workpiece to be processed to be extended out by the same length;

adopt any kind of structure spare of fastening assembly is right wait to process the work piece and carry out the overlap fastening, wherein:

when the workpiece to be machined is a first workpiece to be machined, a first pressure plate assembly is adopted as a fastening assembly;

when the workpiece to be machined is a second workpiece to be machined, a second pressure plate assembly is adopted as a fastening assembly;

when the workpiece to be machined is a third workpiece to be machined, a chain locking assembly is adopted as a fastening assembly;

mounting the positioning support assembly to the end face of the V-shaped seat body at the end opposite to the end to be machined and screwing the positioning support assembly so that the positioning support assembly is attached to the end face of the workpiece to be machined;

after the end to be machined is machined, the positioning and supporting component is detached, replaced and installed on the end face of the V-shaped seat body of the machined end and screwed tightly, so that the positioning and supporting component is attached to the end face of the workpiece to be machined;

and processing the other end of the workpiece to be processed.

Optionally, the first workpiece to be processed is: the outer diameter is less than or equal to 500mm; the second workpiece to be processed is: 500mm < outer diameter <600mm; the third workpiece to be processed is: the outer diameter is more than or equal to 600mm.

Since the technical scheme is used, compared with the prior art, the utility model, have following at least one beneficial effect:

the utility model provides a general clamping instrument and clamping method for processing of short shaft class part crouching has solved the machining efficiency that exists on the clamping technological method in the prior art low, operating personnel's intensity of labour is big and need be equipped with the instrument many with high costs scheduling problem, has realized that a low cost, high efficiency, the reliable machining of structure assist general clamping technique.

The utility model provides a general clamping instrument for processing of lying of minor axis class part and clamping method thereof adopts clamp plate overlap pressure and two kinds of fastening methods of chain locking, has solved the clamping of the processing of lying of big, well, little various minor axis class work piece, makes anchor clamps have comparable flexibility, and has characteristics such as simple structure, cost of manufacture low, easy and simple to handle.

The utility model provides a general clamping instrument for processing of short shaft class part crouching and clamping method thereof, the clamping problem of when minor axis class parts such as the cross head round pin of marine low-speed diesel engine carry out crouching boring and milling machine tool processing has been solved, the whole processing in both ends can be accomplished to hoist once, the assistance-time of hoist and mount in the processing that has significantly reduced, effectively improve the reliability and the production efficiency of work piece clamping, reduce operating personnel's intensity of labour, and have comparable flexibility, the clamping scope is wide, moreover, the steam generator is simple in structure, high durability and convenient use, simultaneously have efficient with low costs, characteristics such as safe and reliable.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic overall structure diagram of a universal clamping tool for horizontal machining of short-axis parts according to a preferred embodiment of the present invention; wherein, (a) is a front view and (b) is a side view;

fig. 2 is a schematic structural view of a V-shaped seat body according to a preferred embodiment of the present invention;

fig. 3 is a schematic structural view of a positioning support assembly according to a preferred embodiment of the present invention;

FIG. 4 is a schematic view of a platen assembly according to a preferred embodiment of the present invention; wherein, (a) is a structural schematic diagram of a second (long) pressing plate assembly, and (b) is a structural schematic diagram of a first (short) pressing plate assembly;

FIG. 5 is a schematic view of a chain locking assembly in a preferred embodiment of the present invention; wherein, (a) is a whole structure schematic diagram, and (b) is a partial structure schematic diagram;

FIG. 6 is a schematic view of the clamping of the small outer diameter part according to a preferred embodiment of the present invention; wherein, (a) is a front view and (b) is a side view;

fig. 7 is a schematic view of clamping a middle-stop outer diameter part according to a preferred embodiment of the present invention; wherein, (a) is a front view and (b) is a side view;

FIG. 8 is a schematic view of a larger outer diameter part clamping in a preferred embodiment of the present invention; wherein, (a) is a front view, and (b) is a side view.

In the figure, 1 is a V-shaped seat body, 2 is a positioning support assembly, 3 is a first pressure plate assembly, 4 is a second pressure plate assembly, 5 is a chain locking assembly, 6 is a series of workpieces, 1-1 is a bearing surface, 1-2 is a first lap screw hole, 1-3 is a second lap screw hole, 1-4 is a cavity hole, 1-5 is a clamping groove, a is a positioning support seat, b is a central screw, c is a fastening screw, d is a stud, e is a first nut, f is a first washer, g is a long pressure plate, h is a short pressure plate, i is a chain lock seat, j is a second nut, k is a second washer, m is a tightening screw, and n is a chain with a detachable chain buckle.

Detailed Description

The following is a detailed description of embodiments of the present invention: this embodiment is using the utility model discloses technical scheme carries out under the prerequisite, has given detailed implementation mode and specific operation process. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention.

An embodiment of the utility model provides a general clamping instrument that is used for minor axis class part crouch processing.

As shown in fig. 1 (a) and (b), the universal clamping tool for the horizontal machining of the short-shaft type part provided by this embodiment may include: the V-shaped seat body 1, the positioning support component 2 and the fastening component; in the working state, the positioning and supporting component 2 is arranged on one end surface of the V-shaped seat body 1; the fastening assembly is used for fastening a workpiece to be processed on the V-shaped seat body 1; wherein:

the fastening assembly comprises any one or more of the following structural members:

a first pressing plate component 3, wherein the first pressing plate component 3 is arranged on the near-V-shaped surfaces on two sides of the upper plane of the V-shaped seat body 1 in the working state and is used for fastening a first workpiece to be processed;

a second platen assembly 4, the second platen assembly 4 being mounted on the upper plane of the V-shaped base 1 on both sides of the proximal surface in an operating state for fastening a second workpiece to be machined;

a chain locking assembly 5, the two ends of the chain locking assembly 5 being mounted on the two sides of the V-shaped seat 1 respectively in the working state, for fastening a third workpiece to be machined;

the first workpiece to be machined is a small workpiece with a small outer diameter, the third workpiece to be machined is a large workpiece with a large outer diameter, and the second workpiece to be machined is a medium-sized workpiece with an outer diameter larger than that of the first workpiece to be machined but smaller than that of the third workpiece to be machined. Thus, the height of the first platen assembly 3 is less than the height of the second platen assembly 4; the outer diameter of the first workpiece to be machined is smaller than that of the second workpiece to be machined, and the outer diameter of the second workpiece to be machined is smaller than that of the third workpiece to be machined.

In a preferred embodiment, as shown in fig. 2, the V-shaped seat 1, as a carrying chassis of the clamp; wherein:

the center of the plane on the bearing chassis is symmetrically provided with a first bearing surface and a second bearing surface which are arranged in a 120-degree V-shaped angle, so that the bearing chassis has a wider clamping size range;

two groups of positioning support component mounting holes are formed in symmetrical positions on end faces of two ends of the bearing chassis and used for mounting the positioning support components 2;

two groups of chain locking and mounting holes are symmetrically formed in the positions of the proximal end parts on the two side surfaces of the bearing chassis and used for mounting the chain locking assemblies 5;

a group of first lapping screw holes 1-2 which are symmetrically arranged and a group of second lapping screw holes 1-3 which are symmetrically arranged are arranged at four corners of two sides of a first bearing surface and a second bearing surface which are arranged at a V-shaped angle on the plane of the bearing chassis, the first lapping screw holes 1-2 are used for installing a first pressure plate component 3, and the second lapping screw holes 1-3 are used for installing a second pressure plate component 4;

the inside of the bearing chassis is provided with cavity holes 1-4 for weight reduction;

the lower parts of the two side surfaces of the bearing chassis are also respectively provided with two clamping grooves 1-5, and the clamping grooves 1-5 are used for installing the V-shaped seat body 1 on a machine tool workbench.

In a preferred embodiment, the load-bearing chassis is made of ductile cast iron.

In a preferred embodiment, as shown in fig. 3, the positioning support assembly 2 may comprise: the positioning support seat a, the connecting screw b and the supporting screw c are arranged; wherein:

the positioning support seat a is a welding assembly and comprises a plate-shaped support block and three vertically welded support rods;

a through screw hole is formed in the position, above the plate-shaped supporting block, of the positioning supporting seat a and used for mounting a supporting screw c;

the positioning support seat a is provided with through bolt holes at the center positions of the three support rods, and is used for installing connecting screws b;

the supporting rod on the positioning supporting seat a is tightly contacted with the end surface of the V-shaped seat body 1;

the connecting screw b is used for installing the position supporting seat a on the end face of the V-shaped seat body 1;

and the fastening screw c is used for axially positioning and supporting the workpiece to be processed.

In a preferred embodiment, as shown in fig. 4 (a) and (b), each of the first platen assembly 3 and the second platen assembly 4 may include: the pressing stud d, the pressing nut e, the pressing washer f and the pressing plate are pressed; wherein:

the lapping stud is a stud with the same thread specification at two ends, and the length of the lapping stud of the first pressure plate component 3 is smaller than that of the lapping stud of the second pressure plate component 4;

bolt holes are formed in the end portions of the two ends of the pressing plate, one end of the pressing stud d penetrates through the bolt holes to be installed and is locked through a pressing washer f and a pressing nut e, and the length of the pressing plate of the first pressing plate component 3, namely the length of a short pressing plate h in the drawing, is smaller than the length of the pressing plate of the second pressing plate component 4, namely the length of a long pressing plate g in the drawing.

Further, the first pressing plate component 3 is used, namely, the lower end of the pressing stud (shorter) is screwed into a first pressing screw hole 1-2 which is arranged on the upper plane of the V-shaped seat body 1, after the upper end of the pressing stud penetrates through a pressing plate bolt hole (shorter), a pressing washer and a pressing nut are sequentially penetrated and installed, and the pressing nut is screwed down to fasten a first workpiece to be processed on the V-shaped seat body 1.

Further, the second pressing plate component 4 is used, namely, the lower end of the pressing stud (longer) is screwed into a second pressing screw hole 1-3 arranged on the upper plane of the V-shaped seat body 1, after the upper end of the pressing stud penetrates through a pressing plate (longer) bolt hole, a pressing washer and a pressing nut are sequentially penetrated and installed, and the pressing nut is screwed down to fasten a second workpiece to be machined on the V-shaped seat body 1.

In a preferred embodiment, as shown in fig. 5 (a) and (b), the chain locking assembly 5 may include: the chain comprises a chain lock seat i, a tightening nut j, a tightening washer k, a tightening screw m and a chain n with a detachable chain buckle; wherein:

the chain lock base i is in an L-shaped block structure, a bolt hole is formed in the long side face of the chain lock base i and used for connecting the chain lock base i to the side face of the V-shaped base body 1, a bolt hole is formed in the other side face of the chain lock base i and used for installing a tightening screw rod m, and the chain lock base i is fastened through a tightening nut j and a tightening washer k;

two ends of the chain n with the detachable chain buckle are respectively connected with the other end of one tightening screw rod m.

In one embodiment, the first workpiece to be processed is: the outer diameter is less than or equal to 500mm; the second workpiece to be processed is: 500mm < outer diameter <600mm; the third workpiece to be processed is: the outer diameter is more than or equal to 600mm.

The utility model discloses the above-mentioned embodiment provides a general clamping instrument for minor axis class part processing of crouching can be exclusively used in minor axis class part and carry out machining such as crouching boring and milling, belongs to the flexible clamping instrument of a V type, is called V type anchor clamps for short. This V type anchor clamps mainly comprise V type pedestal 1, location supporting component 2 and fastening components, and wherein fastening components can include: a first (short) platen assembly 3, a second (long) platen assembly 4, and/or a chain locking assembly 5, as shown in fig. 1 (a) and (b).

In some embodiments of the present invention:

the V-shaped seat body 1 is a bearing part of the whole clamp, as shown in fig. 2, the material thereof adopts nodular cast iron to ensure that the clamp has enough strength and rigidity, and two working surfaces thereof form a 120-degree V-shaped angle, so that the clamp has a wider clamping size range; the upper plane is provided with an inner group of lapping screw holes and an outer group of lapping screw holes for facilitating clamping of small and medium-sized workpieces, the inner part of the upper plane is provided with a cavity hole for reducing weight of the clamp, and the two sides of the upper plane are provided with clamping grooves for facilitating installation of the clamp on a machine tool workbench.

The positioning support assembly 2 mainly comprises a positioning support seat a, a central screw b and a supporting screw c, and plays a role in positioning when a workpiece is clamped and supporting when the workpiece is processed as shown in figure 3; after the machining of one end is finished, the other end can be machined only by replacing the positioning support assembly 2 with the machined end, and the heavy-duty workpiece does not need to be lifted to ensure that the machining of the two ends is finished in one clamping.

The first (short) pressing plate component 3 and the second (long) pressing plate component 4 are both mainly composed of a stud d, a first nut e, a first washer f, a long pressing plate g and a short pressing plate h, and are used for lapping and fastening clamping of small and medium-sized workpieces as shown in (a) and (b) of fig. 4. Wherein, the small-sized workpiece is mainly a workpiece with the outer diameter less than or equal to 500mm, and the medium-sized workpiece is mainly a workpiece with the outer diameter less than 600mm and with the outer diameter less than 500 mm.

The chain locking assembly 5 mainly comprises a chain lock seat i, a second nut j, a second washer k, a tightening screw m and a chain n with a detachable chain buckle, as shown in fig. 5 (a) and (b), and is used for fastening a larger workpiece. Wherein, the large-scale work piece is mainly the work piece that the external diameter is no less than 600mm.

The utility model discloses above-mentioned embodiment provides a V type anchor clamps adopts clamp plate to take the mode of pressing and two kinds of fastening modes of chain locking, has solved the clamping of the crouching processing of big, well, little various minor axis class work piece, makes anchor clamps have comparable flexibility, and simple structure, and the cost of manufacture is low, characteristics easy and simple to handle.

An embodiment of the utility model provides a clamping method of the general clamping instrument of any one of above-mentioned embodiments, can include:

s1, placing a V-shaped seat body 1 of a universal clamping tool in the middle of a workbench of a machining center, leveling the end face of the V-shaped seat body 1 or straightening the side face of the V-shaped seat body 1, and fixing the V-shaped seat body 1 on the workbench;

s2, hoisting the workpiece to be machined to a V-shaped angle of the V-shaped seat body 1, and enabling the two ends of the workpiece to be machined to be extended out by the same length;

s3, adopting any structural part of the fastening assembly to carry out lap-pressing fastening on the workpiece to be processed, wherein:

when the workpiece to be machined is a first workpiece to be machined, the first pressure plate component 3 is adopted as a fastening component; as shown in fig. 6 (a) and (b);

when the workpiece to be machined is a second workpiece to be machined, the second pressure plate assembly 4 is adopted as a fastening assembly; as shown in fig. 7 (a) and (b);

when the workpiece to be machined is a third workpiece to be machined, the chain locking assembly 5 is adopted as a fastening assembly; as shown in fig. 8 (a) and (b);

s4, mounting the positioning support assembly 2 to the end face of the V-shaped seat body 1 at the end opposite to the end to be machined and screwing the positioning support assembly 2 to enable the positioning support assembly 2 to be tightly attached to the end face of the workpiece to be machined;

s5, after the end to be machined is machined, the positioning and supporting component 2 is detached, replaced and installed on the end face of the V-shaped seat body 1 of the machined end and screwed, so that the positioning and supporting component 2 is attached to the end face of the workpiece to be machined;

thus, the other end of the workpiece to be processed can be processed.

In one embodiment, the first workpiece to be processed is: the outer diameter is less than or equal to 500mm; the second workpiece to be processed is: 500mm < outer diameter <600mm; the third workpiece to be processed is: the outer diameter is more than or equal to 600mm.

It should be noted that, the steps in the method provided by the present invention can be implemented by using corresponding components in the system, and those skilled in the art can refer to the technical scheme of the system to implement the step flow of the method, that is, the embodiment in the system can be understood as a preferred example of the implementation method, and will not be described herein again.

The general clamping tool and the clamping method thereof provided by the above embodiments of the present invention are further described below with reference to a specific application example.

The specific application example is applied to clamping of horizontal boring and milling processing of a crosshead pin of a marine low-speed diesel engine, and specifically comprises the following steps:

step 1, placing a V-shaped clamp in the middle of a workbench of a machining center, leveling the end face of a V-shaped seat body 1 or straightening the side face of the V-shaped seat body, and fixing the V-shaped seat body 1 to the workbench by using T-shaped screws;

step 2, hoisting a workpiece (i.e. a crosshead pin) to a V-shaped groove of the V-shaped seat body 1, and enabling the two ends of the workpiece to be similar in overhanging length;

and 3, pressing and fastening the workpiece by using a pressure plate assembly or a chain locking assembly, wherein:

if the workpiece is a part with a smaller outer diameter (less than or equal to phi 500), selecting the first pressure plate component 3 to clamp the workpiece according to (a) and (b) in fig. 6;

if the workpiece is a part with a middle-gear outer diameter (phi 500-phi 600), selecting a second pressure plate component 4 to press and clamp the workpiece as shown in (a) and (b) in fig. 7;

if the workpiece is a part with a larger outer diameter (not less than phi 600), the chain locking component 5 is selected to clamp the larger workpiece according to the graph (a) and (b) in fig. 8.

Step 4, mounting the positioning support assembly 2 on the end surface of the V-shaped seat body 1 back to the end to be processed, and screwing a fastening screw c (shown in figure 3) to enable the fastening screw c to be tightly attached to the end surface of the workpiece;

step 5, after the boring and milling machining of the end to be machined of the workpiece is finished, the positioning and supporting component 2 is detached and replaced to the end face of the V-shaped seat body 1 of the machined end, and the fastening screw c is screwed tightly to be attached to the end face of the workpiece;

and processing each processing element of another end to be processed can be carried out and completed.

Use the utility model discloses clamping instrument and clamping method that above-mentioned embodiment provided assist the crosshead pin horizontal boring and milling processing of carrying on marine low-speed diesel engine, the assistance-time of processing clamping that has significantly reduced effectively improves the reliability and the production efficiency of work piece clamping, reduces operating personnel's intensity of labour.

The utility model discloses above-mentioned embodiment provides a general clamping instrument for minor axis class part processing of crouching and clamping method thereof, the clamping problem of minor axis class parts such as the cross head round pin of marine low-speed diesel engine carry out crouching boring and milling machining has been solved, once hoist and mount can accomplish the whole processing in both ends, the assistance-time of hoist and mount in the processing has significantly reduced, effectively improve the reliability and the production efficiency of work piece clamping, reduce operating personnel's intensity of labour, and V type anchor clamps have corresponding flexible clamping wide range, moreover, the steam generator is simple in structure, high in use convenience, and the efficiency is with low costs, safety and reliability.

The above embodiments of the present invention are not the best known techniques in the art.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims (7)

1. A general clamping instrument that is used for horizontal processing of minor axis class part, its characterized in that includes: the V-shaped seat body (1), the positioning support component (2) and the fastening component; in a working state, the positioning and supporting component (2) is arranged on one end face of the V-shaped seat body (1); the fastening assembly is used for fastening a workpiece to be machined on the V-shaped seat body (1); wherein:

the fastening assembly comprises any one or more of the following structural members:

the first pressure plate component (3) is mounted on the two side near V-shaped surfaces of the upper plane of the V-shaped seat body (1) in a working state and used for fastening a first workpiece to be machined;

the second pressure plate assembly (4) is mounted on the near side surfaces of two sides of the upper plane of the V-shaped seat body (1) in a working state and used for fastening a second workpiece to be machined;

the two ends of the chain locking component (5) are respectively arranged on the two side surfaces of the V-shaped seat body (1) in a working state and are used for fastening a third workpiece to be machined;

the height of the first pressure plate component (3) is less than that of the second pressure plate component (4); the outer diameter of the first workpiece to be machined is smaller than that of the second workpiece to be machined, and the outer diameter of the second workpiece to be machined is smaller than that of the third workpiece to be machined.

2. The universal clamping tool for horizontal machining of short shaft parts as claimed in claim 1, wherein the V-shaped seat body (1) is used as a bearing chassis of a clamp; wherein:

a first bearing surface and a second bearing surface which are arranged at a 120-degree V-shaped angle are symmetrically arranged at the central position of the plane on the bearing chassis;

two groups of positioning and supporting component mounting holes are formed in symmetrical positions on end faces of two ends of the bearing chassis and used for mounting the positioning and supporting components (2);

two groups of chain locking and mounting holes are symmetrically formed in the positions of the proximal end parts on the two side surfaces of the bearing chassis and used for mounting the chain locking assemblies (5);

a group of first lapping screw holes (1-2) which are symmetrically arranged and a group of second lapping screw holes (1-3) which are symmetrically arranged are arranged at four corners of two sides of a first bearing surface and a second bearing surface which are arranged at a V-shaped angle on the upper plane of the bearing chassis, the first lapping screw holes (1-2) are used for installing the first pressure plate component (3), and the second lapping screw holes (1-3) are used for installing the second pressure plate component (4);

a cavity hole (1-4) for weight reduction is formed in the bearing chassis;

the lower parts of the upper two side surfaces of the bearing chassis are respectively provided with two clamping grooves (1-5), and the clamping grooves (1-5) are used for installing the V-shaped seat body (1) on a machine tool workbench.

3. The universal clamping tool for the recumbent machining of short shaft parts as claimed in claim 2, wherein the bearing chassis is made of ductile iron.

4. The universal clamping tool for horizontal machining of short shaft parts as claimed in claim 1, wherein the positioning support assembly (2) comprises: the positioning support seat, the connecting screw and the fastening screw are arranged; wherein:

the positioning support seat is a welding assembly and comprises a plate-shaped support block and three vertically welded support rods;

a through screw hole is formed in the position, above the plate-shaped supporting block, of the positioning supporting seat, and the screw hole is used for mounting the fastening screw;

the positioning support seat is provided with through bolt holes at the center positions of the three support rods for the installation of the connecting screws;

the support rod on the positioning support seat is in close contact with the end face of the V-shaped seat body (1);

the connecting screw is used for installing the position supporting seat on the V-shaped seat body (1);

the holding screw is used for axially positioning and supporting the workpiece to be processed.

5. The universal clamping tool for the horizontal machining of short shaft parts according to claim 1, wherein the first pressure plate assembly (3) and the second pressure plate assembly (4) each comprise: the lapping stud, the lapping nut, the lapping washer and the pressing plate are arranged on the base; wherein:

the lap-pressure stud is a stud with the same thread specification at two ends;

bolt holes are formed in the end portions of the two ends of the pressing plate, and the lapping studs are installed in the bolt holes and locked through the lapping washers and the lapping nuts;

the length of the pressure stud of the first pressure plate component (3) is smaller than that of the pressure stud of the second pressure plate component (4); the length of the pressing plate of the first pressing plate component (3) is smaller than that of the pressing plate of the second pressing plate component (4).

6. Universal clamping tool for the lying machining of short shaft parts according to claim 1, characterised in that the chain locking assembly (5) comprises: the chain comprises a chain lock seat, a tightening nut, a gasket washer, a tightening screw and a chain with a detachable chain buckle; wherein:

the chain lock seat is of an L-shaped block structure, a bolt hole is formed in the long side surface of the chain lock seat and used for connecting the chain lock seat to the side surface of the V-shaped seat body (1), and a bolt hole is formed in the other side surface of the chain lock seat and used for installing the tightening screw rod;

and two ends of the chain with the detachable chain buckle are respectively connected with the other end of one tightening screw rod.

7. The universal clamping tool for the horizontal machining of the short shaft type part as claimed in any one of claims 1 to 6, wherein the first workpiece to be machined is: the outer diameter is less than or equal to 500mm; the second workpiece to be processed is: 500mm < outer diameter <600mm; the third workpiece to be processed is: the outer diameter is more than or equal to 600mm.

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