CN216463233U - Universal device for machining connecting rod - Google Patents

Abstract

The utility model discloses a universal device for machining a connecting rod, which is mainly used for universal positioning and clamping in the procedures of milling the end surfaces of the big end and the small end of the connecting rod, milling the inclined plane of the small end of the connecting rod, drilling the connecting rod, machining a shaft bush groove of the connecting rod and the like. The main technical scheme is as follows: the left part is fixedly connected with a small-head arc baffle, and then a bracket is welded, wherein the bracket is provided with an air cylinder, and the air cylinder is connected with a pressing block; on the right part, a small shell is welded with the fixed column, a large-head arc-shaped fixture block is connected with the small shell, and then a motor is installed; a screw rod is arranged in the large shell, a sliding rod is welded below the screw rod, the sliding rod is connected with a nut, and the nut is connected with a fixed column; in the small shell, the large-head arc-shaped clamping block is welded with the sliding block and then is installed in the small shell, and the two springs are welded at the same time. The application proves that: fundamentally has overcome the phenomenon that the instrument is with high costs, production efficiency is low, reaches the cost reduction, has improved production efficiency, can not cause the damage to the connecting rod in the processing, can satisfy the demand of existing production.

Description

Universal device for machining connecting rod

Technical Field

The utility model belongs to a tool for machining, which is mainly used for universal positioning and clamping in procedures of milling large and small end faces of a connecting rod, milling a small end inclined plane of the connecting rod, drilling the connecting rod, machining a shaft bush groove of the connecting rod and the like, and can also be used for positioning and clamping other similar workpieces.

Background

The connecting rod is a key part of an engine (see fig. 1), a connecting rod group generally comprises a connecting rod body, a connecting rod cover, a pin, a bolt and the like, the connecting rod bears the action force transmitted by a piston and the action of self-swinging and reciprocating inertia force of the piston group, the magnitude and the direction of the forces are periodically changed, so that the connecting rod is under the action of alternating loads such as compression, tension and the like, the connecting rod has enough fatigue strength and structural rigidity, the fatigue strength is insufficient, the connecting rod body or the connecting rod bolt is often broken, and then a serious accident of complete machine damage is generated, if the rigidity is insufficient, the bending deformation of the connecting rod body and the out-of-round deformation of the big end of the connecting rod are caused, eccentric wear of the piston, a cylinder, a bearing, the crank pin and the like is caused, and the serious accident and the service life is also influenced. Therefore, the connecting rod group has various processes in the machining process, the precision requirement is high, a large number of tool fixtures are naturally needed, almost every process has a special non-standard positioning clamping tool, the tool cost is high, the management is troublesome, and meanwhile, in the use aspect of the tool, the debugging auxiliary time is long, the improvement of the production efficiency is seriously influenced, and the requirement of the existing production cannot be met. However, the existing machining tool cannot position and clamp the connecting rods with different specifications and sizes, has poor protection effect, and is very easy to damage the connecting rods in the clamping and fixing process, so that the technical problem in the aspect is solved.

SUMMERY OF THE UTILITY MODEL

The technical problem and purpose to be solved by the utility model is to design a novel connecting rod processing positioning and clamping device for multiple processes to be universal according to the defects in the existing connecting rod production and processing. Fundamentally overcomes the phenomenon that the instrument cost is high, production efficiency is on the low side, reaches and reduces the instrument cost effectively, improves production efficiency, and the connecting rod can not cause the damage in the processing, can satisfy the demand of existing production.

The main technical scheme of the utility model is as follows: the device comprises a large shell, a motor, a small shell, a large-head arc-shaped fixture block, a support, a cylinder, a small-head arc-shaped baffle, a pressing block, a sliding rod, a sliding sleeve, a nut, a fixed column, a bearing seat, a screw rod, a screw, a sliding block, a sliding chute, a spring, a rubber pad and a controller, and is characterized in that the small-head arc-shaped baffle is fixedly connected to the left part of the surface of the large shell through the screw, the rubber pad is bonded to the arc part of the small-head arc-shaped baffle, the support is fixed through welding, the cylinder is arranged in the middle of a cross beam on the support, and the cylinder is connected with the pressing block; on the right part, the small shell is welded with a fixed column in a through groove of the large shell, the small shell is matched with the large-head arc-shaped fixture block to be connected, a rubber pad is bonded at the arc part of the large-head arc-shaped fixture block, and then a motor is installed; a screw rod is arranged in the large shell through a motor, a bearing and a nut, a sliding rod is welded at two ends in the large shell below the screw rod in parallel, the sliding rod penetrates through a sliding sleeve, the sliding sleeve is connected with the lower part of the nut, and the upper part of the nut is connected with a fixed column; in the small shell, the large-head arc-shaped clamping block and the sliding block are welded and then are arranged in the sliding groove of the small shell, and the two springs are welded and fixed at the same time.

Utility model passes through the practical application demonstration: the device has the advantages that the design purpose is completely achieved, the device is reasonable in design, accurate in positioning and stable in clamping; the positioning and clamping tools of at least six working procedures are saved, and the tool cost is obviously reduced; the time for converting products and debugging the tooling is obviously shortened, the operation is simple and convenient, and the production efficiency is obviously improved; the phenomenon that the connecting rod is damaged is thoroughly eliminated, and the requirements of various small-batch or large-batch production can be met.

Drawings

The following describes in further detail embodiments of the present invention with reference to the accompanying drawings.

FIG. 1 is a schematic external view of a semi-finished connecting rod;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic perspective view of the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

fig. 5 is a top sectional view of the small housing 3.

Detailed Description

The main technical solutions of the present invention will be explained with reference to fig. 3, 4, and 5: the device comprises a large shell 1, a stepping motor 2, a small shell 3, a large-head arc-shaped fixture block 4, a support 5, a cylinder 6, a small-head arc-shaped baffle 7, a pressing block 9, a sliding rod 10, a sliding sleeve 11, a nut 12, a fixed column 13, a bearing 14, a bearing seat 15, a screw rod 16, a screw 17, a sliding block 18, a sliding chute 19, a spring 20, a rubber pad 21 and a controller 22, wherein the surface of the large shell 1 is fixedly connected with the small-head arc-shaped baffle 7 along the left part of a central line through the screw 17, the rubber pad 21 is bonded at the arc part of the small-head arc-shaped baffle, the support 5 is fixed by welding, the cylinder 6 is arranged in the middle of a cross beam on the support, and the cylinder is connected with the pressing block 9; b. on the right part, the small shell 3 is welded with a fixed column 13 in a through groove of the large shell 1 (see figure 4), the large-head arc-shaped fixture block 4 is connected with the small shell 3 in a matching way, a rubber pad 21 is bonded at the arc part of the large-head arc-shaped fixture block, and then the stepping motor 2 is installed; c. a lead screw 16 is arranged in a large shell 1 through a stepping motor 2, a bearing 14 and a nut 12, a sliding rod 10 is welded at two ends in the large shell 1 below the lead screw in parallel, the sliding rod penetrates through a sliding sleeve 11, the sliding sleeve is connected with the lower part of the nut 12, and the upper part of the nut is connected with a fixed column 13; d. in the small shell 3 (see fig. 5), the large-head arc-shaped fixture block 4 and the slide block 18 are welded and then are installed in the chute 19 of the small shell, and two springs 20 are welded and fixed at the same time.

Referring to fig. 3, 4 and 5, the stepping motor 2 is of a standard model Y07-20D1-a401, and is manufactured by a manufacturer: ningbo Intelligent drive Limited; the standard name of the cylinder 6, model HBC63 × 100, manufacturer; wuxi technology, Inc.; the bearing 14 is a TIN652 bearing; the spring 20 is a common spring; the arc shape of the large-head arc-shaped fixture block 4 corresponds to the arc shape of the large-head end of the connecting rod; the arc shape of the small end arc baffle 7 corresponds to the arc shape of the small end of the connecting rod.

Referring to fig. 3 and 4, the working principle of the utility model is as follows: when connecting rods 8 with different lengths need to be positioned and clamped on a workbench of the device, firstly, a connecting rod body is placed on the surface of a base 1, and the tail ends of the connecting rods 8 are in contact with the arc-shaped surface of a small-head arc-shaped baffle 7; the stepping motor 2 is started through the controller 22, the nut 12 and the sliding sleeve 11 are driven to move leftwards on the sliding rod 10 through the rotation of the screw rod 16, meanwhile, the nut 12 drives the small shell 3 to start moving through the fixing column 13 (see figure 5), the small shell drives the large-head arc-shaped clamping block 4 to start moving, when the left side of the large-head arc-shaped clamping block 4 is in contact with the right side of the connecting rod 8, the large-head arc-shaped clamping block buffers the spring 20 through the sliding block 18, and the spring, the large-head arc-shaped clamping block 4 and the small-head arc-shaped baffle 7 are matched to clamp and fix the connecting rod 8; then, the air cylinder 6 is opened through the controller, and the air cylinder drives the pressing block 9 to move downwards, so that the pressing block presses the connecting rod 8. At the moment, the positioning and clamping of the connecting rod are finished. The connecting rod can be subjected to milling of the end face of the big head and the small head, milling of the inclined face of the small head, drilling of the big head and the small head, machining of a bearing bush groove and the like, positioning and clamping are performed according to the steps, and the operation of each process is specifically performed according to the rules of equipment, so that detailed description is omitted.

Referring to fig. 3, 4 and 5, the main innovation points of the utility model are as follows: the sliding sleeve 11 and the sliding rod 10 are arranged, so that the nut 12 can move stably when being used, and the problem that the nut is easy to rotate when being used is solved; the spring 20 is arranged, so that the large-head arc-shaped fixture block 4 has a buffering effect when in use, and the problem that a workpiece cannot be damaged when the large-head arc-shaped fixture block is in use is solved; the sliding groove 19 and the sliding block 18 are arranged, so that the large-head arc-shaped clamping block can be stably moved when in use, and the problem that the large-head arc-shaped clamping block is easy to incline when in use is solved. The flexible positioning and clamping device has the advantages that the connecting rods with different sizes can be flexibly positioned and clamped, the universality of the device is realized, and the connecting rod body is protected from being damaged.

The utility model is used for processing various connecting rods with specifications of N15A, NE14TG-AA, E12, EA10FF, Mercury 600, JL466Q5 and the like in multiple working procedures, and has good effect.

Claims (1)

1. A universal device for connecting rod processing is characterized in that: the device comprises a large shell (1), a stepping motor (2), a small shell (3), a large-head arc-shaped fixture block (4), a bracket (5), a cylinder (6), a small-head arc-shaped baffle (7), a pressing block (9), a sliding rod (10), a sliding sleeve (11), a nut (12), a fixing column (13), a bearing (14), a bearing seat (15), a screw rod (16), a screw (17), a sliding block (18), a sliding groove (19), a spring (20), a rubber pad (21) and a controller (22), and the specific structure is as follows, a small-end arc baffle (7) is fixedly connected to the left part of the surface of a large shell (1) through a screw (17), a rubber pad (21) is bonded to the arc part of the small-end arc baffle, a support (5) is fixedly welded to the large shell (1), a cylinder (6) is arranged in the middle of a cross beam on the support, and the cylinder is connected with a pressing block (9); on the right part, the small shell (3) is welded with a fixed column (13) in a through groove of the large shell (1), a large-head arc-shaped fixture block (4) is connected with the small shell (3) in a matching way, a rubber pad (21) is bonded at the arc part of the large-head arc-shaped fixture block, and a stepping motor (2) is installed; a lead screw (16) is arranged in a large shell (1) through a stepping motor (2), a bearing (14) and a nut (12), a sliding rod (10) is welded at two ends in the large shell (1) below the lead screw in parallel, the sliding rod penetrates through a sliding sleeve (11), the sliding sleeve is connected with the lower part of the nut (12), and the upper part of the nut is connected with a fixed column (13); in the small shell (3), the large-head arc-shaped fixture block (4) is welded with the slide block (18) and then is arranged in the chute (19) of the small shell, and one end of the large-head arc-shaped fixture block (4) is fixedly welded with two springs (20).

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