CN102114500B - Clamp for manufacturing lower bracket of automobile redirector - Google Patents

Abstract

The invention provides a jig for manufacturing the lower bracket of the automobile steering gear with high cost performance, simple operation and comprehensive shape correction. The clamp includes a base, a clamping mechanism and a shape-correcting mechanism arranged on the base, and is characterized in that the clamping mechanism includes two end clamping mechanisms for clamping the ends of the lower bracket of the steering gear, and the lower bracket of the steering gear It is horizontally arranged on the top of the clamping mechanism along its length direction, and the shape correction mechanism is arranged on both sides of the lower bracket of the steering gear between the two end clamping mechanisms. By adopting the above structure, the present invention can accurately correct the shape of the lower bracket of the steering gear bracket of the automobile instrument panel beam, solve the problem that the shape calibration of the lower bracket of the steering gear bracket of the automobile dashboard beam is difficult, and overcome the difficulty of the low efficiency of the shape calibration. The shortcomings of meeting the production requirements are especially suitable for the calibration of parts produced in large quantities in the industry, thus saving many tedious steps in the previous device and greatly improving the efficiency of the calibration work.

Description

A jig for manufacturing the lower bracket of an automobile steering gear

technical field

The invention relates to a manufacturing device of automobile parts, in particular to a fixture for manufacturing the lower bracket of the steering gear bracket of the crossbeam of the automobile instrument panel.

Background technique

With the development of the economy and the improvement of living standards, the use of automobiles is increasing year by year. The relationship between vehicles and human beings is really inseparable, and between vehicle manufacturers, vehicle component manufacturers and drivers, not only the performance, safety and fuel-saving effect of the vehicle itself are pursued, but also the components of the vehicle are becoming more and more important. Pay attention.

While automobiles have become our main means of transportation, people's requirements for their manufacturing processes have become higher and higher, making their production processes more and more advanced, and the production and testing of various parts have also become more and more advanced. Accuracy is getting higher and higher. The shape of the lower bracket of the steering gear is complex, and there are many three-dimensional space dimensions that need to be controlled during production. The dimensions of various installation spaces required by it must be within the allowable dimensional tolerance range. Its accuracy directly affects the performance of the car.

Fixtures are mainly used for shape correction in parts manufacturing. Shape correction means that after the workpiece has gone through various stamping processes, because its dimensional accuracy and surface shape cannot meet the requirements of the part, at this time, it needs to be close to the shape and size of the workpiece. On the basis of the requirements of the parts, a special mold is used to make it produce little plastic deformation, so as to obtain a stamping processing method of qualified parts. The purpose of shape correction is to trim the unevenness or arc of the workpiece surface to meet the requirements of the drawing. Generally speaking, for stamping parts with high surface shape and size requirements, shape correction is often required. Shaping is widely used in machinery manufacturing fields such as automobiles.

The calibration process has the following characteristics:

1. The amount of deformation of the school shape is very small, and most of them are local deformations;

2. The dimensional accuracy of the shaped workpiece is relatively high, so the accuracy of the mold forming part should be improved accordingly;

3. The properties of stress and strain during shape correction are different from those of the previous processes. The stress state during shape correction should be conducive to reducing the impact of springback on the accuracy of the workpiece, that is, it is conducive to stabilizing the shape and size of the workpiece under the action of the shape correction die. Therefore, the stress and strain of the workpiece during shape correction are much more complicated than the general forming process;

4. When correcting the shape, it needs to be carried out when the slider of the press is at the bottom dead center. Therefore, the shape correction requires high rigidity and precision of the equipment used, and is usually carried out on a special precision press. If the shape is corrected on a common press, an overload protection device must be provided to prevent damage to the equipment.

The beam is a key component of the car, especially the beam of the dashboard of the car. The beam of the dashboard of the car is an important part to ensure the stable and reliable use of various instruments of the car, including the beam, the metal sheet and the mounting hole. The high-speed rotation of the high-power engine and the harsh road conditions of the vehicle are likely to cause strong vibration and jolts to the cab, resulting in disconnection or failure of the instrument circuit and some functions in the front control panel.

The traditional fixture is made of a steel plate or steel pipe welded base and a metal bracket as structural parts. Due to the use of an integral steel plate or steel pipe welded structure, the fixture is very heavy and difficult to move. The traditional shape correction method is to use a fixture to test the beam. If the pin gauge can pass through the mounting hole on the beam and conforms to the hole diameter, the product is qualified. If the gauge pin cannot pass through the mounting hole on the beam, it needs to be fixed on the fixture. Up, use tools, and make corrections. This process needs to go through two processes of jig and jig, and it takes double time.

Contents of the invention

The present invention aims at the problems in the prior art of manufacturing the lower bracket of the steering gear that the correcting process has high requirements for operators, long correcting time, energy-consuming, low correcting efficiency, etc., and proposes a cost-effective, simple operation, Fixtures for quickly correcting the lower bracket of the car steering gear.

The technical problem to be solved in the present invention can be realized through the following technical solutions:

A jig for manufacturing the lower bracket of the steering gear, including a base, a clamping mechanism and a shape correction mechanism arranged on the base, characterized in that the clamping mechanism includes two end clamping mechanisms for clamping the ends of the lower bracket of the steering gear The lower bracket of the steering gear is horizontally arranged on the top of the clamping mechanism along its length direction, and the shape correction mechanism is arranged on both sides of the lower bracket of the steering gear between the two end clamping mechanisms.

In the present invention, the base is further provided with side plates to enhance the stability of the base.

The base is provided with a fixing hole for fixing the position of the clamp to prevent inaccurate detection caused by the movement of the clamp during operation.

A suspension ring is provided on the base to facilitate the movement of the fixture.

In the present invention, in order to enhance the clamping stability of the end of the lower bracket of the steering gear, an end fixing mechanism is also provided beside the end clamping mechanism. The support, the driving base and the fixed pressure head arranged on the base or outside the base, the pressure rod is set on the pressure rod support and supported by the pressure rod support, one end of the pressure rod is connected to the driving base through bolts, and the fixed pressure head is set Press the other end of the pressure rod against the end of the lower bracket of the steering gear.

The end fixing mechanism can also have other structures. The end fixing mechanism includes a base arranged on the base, a driving part fixed on the base, a driven part connected with the driving part, and a driven part arranged at the end of the driven part. The fixed pressure head of the part.

The shape-correcting mechanism on one side includes: a pedestal arranged on the base, a horizontal guide rail is provided on the base, a shape-correcting part that can slide along the horizontal guide rail is provided on the horizontal guide rail, the front end profile of the shape-correcting part and the diverter The outer contours of the part of the lower bracket to be shaped are the same.

The shape-correcting mechanism on the other side includes: a pedestal arranged on the base, an inclined guide rail is provided on the base, a shape-correcting part that can slide along the inclined guide rail is provided on the inclined guide rail, and the front end profile of the shape-correcting part and the steering gear The outer contours of the part of the lower bracket to be shaped are the same.

The bases of the two shape-correcting mechanisms are respectively provided with drive components that drive the respective shape-correcting components to slide on their respective guide rails.

Positioning pins are arranged on the two shape-correcting components to fix the shape-correcting components on their respective guide rails.

By adopting the above structure, the present invention can accurately correct the shape of the lower bracket of the automobile steering gear, solve the problem that the shape of the lower bracket of the automobile steering gear is difficult to calibrate, overcome the disadvantage of low efficiency of shape calibration and difficulty in meeting production requirements, and has high cost performance; This invention greatly reduces the calibration cost, is easy to operate, and has high calibration accuracy, and is especially suitable for calibration of industrial mass-produced parts; this invention is easy to move and carry, does not occupy space, and realizes simultaneous omni-directional calibration, thereby saving Many cumbersome steps in the previous device are eliminated, which greatly improves the efficiency of the calibration work.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural view of the front side of the present invention.

Fig. 2 is a structural schematic diagram of the rear side of the present invention.

Detailed ways

In order to make the technical means, creative features, goals and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

As shown in Figures 1 and 2, a fixture for manufacturing a steering gear bracket 11 of an automobile instrument panel crossbeam includes a base 2. In order to enhance the stability of the base, the base 2 is also provided with a side plate 21, the base 2 and the side plate 21 A fixing hole 22 for fixing the position of the clamp can be provided on the top. When using the clamp to detect the steering gear 11, the clamp must be fixed first to prevent the clamp from moving during operation and cause inaccurate detection. At the same time, in order to facilitate the movement of the clamp, A suspension ring 23 can be arranged on the base 2 .

The base 2 is provided with a clamping mechanism and a shape-correcting mechanism. The clamping mechanism includes end clamping mechanisms 31 and 32 that clamp the two ends of the steering gear 11. The end clamping mechanisms 31 and 32 support the lower bracket of the steering gear as a whole and Clamping it, the diverter 11 is disposed horizontally on top of the end clamping mechanisms 31 and 32 along its length.

In order to enhance the clamping stability of the end of the lower bracket of the steering gear, an end fixing mechanism is also provided beside the end clamping mechanism. The end fixing mechanism 4 is taken as an example, the end fixing mechanism 4 includes a pressure rod 41, a pressure rod support 42 arranged on the base 2, a driving base 43 and a fixed pressure head 44 arranged on the base 2 or outside the base 2, The pressure rod 41 is set on the pressure rod support 42 and is supported by the pressure rod support 42. One end of the pressure rod 41 is movably connected with the driving base 43 through bolts, and the fixed pressure head 44 is arranged on the other end of the pressure rod 41 and pressed under the steering gear. end of the bracket. Drive base 43 can adopt hydraulic device, and drive base 43 upwards drives an end of depression bar 41, and depression bar 41 is fulcrum rotation with depression bar support 42, and fixed pressure head 44 can be firmly pressed on the end of steering gear 11.

The end fixing mechanism can also have other structures. Taking the end fixing mechanism 5 arranged on one side of the end clamping mechanism 32 as an example, the end fixing mechanism 5 includes a base 51 arranged on the base 2, fixed on the base The driving part 52 on the seat 51 , the driven part 53 connected with the driving part 52 and the fixed pressure head 54 arranged at the end of the driven part 53 . The driving part 52 can use a hydraulic device to drive the driven part 53 to move, so that the fixed pressure head 54 at the end of the driven part 53 is pressed against the middle part of the steering gear 11 .

The shape correction mechanism is arranged on both sides of the diverter 11 between the end clamping mechanisms 31 and 32, wherein the shape correction mechanism 6 on one side includes a base 61 arranged on the base 2, and the base 61 is provided with a horizontal guide rail 62, the horizontal guide rail 62 is provided with a shape-correcting component 62 that can slide along the horizontal guide rail 62, and the front end profile of the shape-correcting component 62 is the same as the outer profile of the diverter 11 to be corrected.

The shape-correcting mechanism 7 on the other side comprises a base 71 arranged on the base 2, the base 71 is provided with an inclined guide rail 72, and the inclined guide rail 72 is provided with a shape-correcting part 73 that can slide along the inclined guide rail 72, the shape-correcting The front end profile of part 73 is identical with the outer profile of the part to be corrected of the steering gear lower bracket.

The base 61 is provided with the drive part 64 that drives the correction part 63 to slide on the horizontal guide rail 62, and the base 71 is provided with the drive part 74 that drives the correction part 73 to slide on the inclined guide rail 72, so that the correction can be easily adjusted. The positional relationship between the shape parts 63 and 73 and the steering gear 11 is convenient for carrying out the shape correction work, and the drive parts 64 and 74 can also adopt hydraulic devices. At the same time, the base 61 is provided with a positioning pin 65, and the base 71 is provided with a positioning pin 74 to fix the shape correcting components 63 and 73 on the respective guide rails.

The present invention adopting the above-mentioned structure can accurately correct the shape of the automobile steering gear 11, overcome the shortcoming that the efficiency of the shape correction is low and it is difficult to meet the production requirements, and improve the efficiency of the shape correction work.

The working process of the automobile steering gear 11 fixture of the present invention in the shape correction workpiece is described below.

Because the base 2 is the benchmark for the design, installation and commissioning of the entire fixture, when the clamping mechanism and the shape-correcting mechanism are fixed and installed with the base 2, they should first follow the dimensional tolerance range required by the relevant dimensions of the same series of steering gear 11 to be calibrated. Positioning is carried out, and then after the fixed connection, the clamping mechanism and the shape-correcting mechanism are installed, the workpiece diverter 11 can be calibrated.

First, the steering gear 11 that needs to be corrected is placed on the top of the end clamping mechanisms 31 and 32, and then the steering gear 11 is clamped with the fixed pressure heads of the end fixing mechanisms of each part so that it can no longer move. After doing the above preparations, carry out the work of shaping, adjust the position of the shaping component 63 on the horizontal guide rail 62, adjust the position of the shaping component 73 on the inclined guide rail 72, and make the front ends of the shaping components 63 and 73 close to the diverter 11 The part to be corrected, then check whether the front end contours of the corrected parts 63 and 73 match the outer contour of the part to be corrected by the steering gear 11, if they match, it means that the diverter 11 is qualified; otherwise, use an appropriate force to promote the corrected shape Components 63 and 73 extrude diverter 11 to correct its shape, until the outer contour of diverter 11 to be corrected matches with the front end contour of correcting components 63 and 73 . Then take off the diverter 11, and then correct all the diverters 11 that need to be corrected, so that the correct shape can be completed quickly.

This method can quickly and accurately correct the shape of the automobile steering gear 11, solves the problem of difficult shape correction of the automobile steering gear 11, overcomes the shortcomings of low efficiency of shape correction and cannot meet production requirements, and improves the efficiency of shape correction work.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments, and that described in the above-mentioned embodiments and the description only illustrates the principles of the present invention, and the present invention also has various aspects without departing from the spirit and scope of the present invention. Variations and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (1)

1. one kind manufactures the fixture of steering gear lower carriage, the clamping device comprising base and be arranged on base and shape rectifying mechanism, it is characterized in that: clamping device comprises the end clamping device of two clamping steering gear lower carriage ends, described steering gear lower carriage is flatly arranged on the top of clamping device along its length, and shape rectifying mechanism is arranged on the both sides of steering gear lower carriage between two end clamping devices; Described shape rectifying mechanism, comprise: be arranged on the pedestal on base, pedestal is provided with horizontal guide rail and inclined guide rails, horizontal guide rail and inclined guide rails are provided with the school shape parts that can slide along horizontal guide rail and inclined guide rails, and front end profile and the steering gear lower carriage of school shape parts treat that the outline of school shape part is identical; Described base is provided with side plate, for by fixing for the position of fixture fixing hole, suspension ring; Described end clamping device is other is provided with end fixing mechanism, described end fixing mechanism, comprise depression bar, the depression bar bearing be arranged on base, be arranged on driving base on base or outside base and fixing pressure head, depression bar is arranged on depression bar bearing by depression bar seat supports, one end of depression bar is flexibly connected by bolt with driving base, and the other end that fixing pressure head is arranged on depression bar is pressed in the end of steering gear lower carriage; Described pedestal is provided with the driver part driving school shape parts at slide on rails; Described school shape parts are provided with alignment pin.