CN209578904U - A hydraulic fixture for drilling four holes in the middle flange of end teeth - Google Patents

Abstract

The utility model relates to a kind of end-tooth intermediate flanges to bore four hole hydraulically operated fixtures, including pedestal, positioning plate, hydraulic cylinder, support base, spring, press mechanism, bushing plate and drill jig sleeve, seat under support base includes the support seat of honour and supports, support the upper surface of lower seat affixed by hexagon socket cap head screw and the support seat of honour, make that the seat of honour is supported to move up and down along the hexagon socket cap head screw, the upper surface at the support seat of honour opens up dustpan shape groove, and the interior arc radius of the dustpan shape groove is identical as end-tooth intermediate flange microcephaly's exradius, the spline mandrel that the intermediate setting direction of bushing plate cooperates downward and with end-tooth intermediate flange internal spline, and spline mandrel, the position of center line degree of hydraulic cylinder and dustpan shape groove inner arc is no more than 0.1mm, original detail major part outer circle is replaced using the spline mandrel cooperated with part internal spline As positioning datum, accurate positioning, this arrangement enhances machining accuracies, increase the enthusiasm for production of worker.

Description

A hydraulic fixture for drilling four holes in the middle flange of end teeth

technical field

The utility model relates to the technical field of end-face gear manufacturing, in particular to a four-hole hydraulic clamp for drilling the middle flange of end-face teeth.

Background technique

With the continuous development of the enterprise, the application of a large number of numerical control processing equipment and the progress of specialized mass production have made the existing tooling and fixtures continuously innovated and improved, and abandoned the previous high energy consumption, high consumables, high labor intensity and low efficiency. Tooling fixtures, actively looking for high-quality, high-efficiency production methods, new tooling fixtures that save manpower and material resources.

The process route for the middle flange part of the end tooth is: ①Turn the end face of the big head, the outer circle, the inner cavity of the car, the middle hole, and chamfer; , ④ drill four holes, ⑤ pull the face teeth. Among them, process ④ drilling four holes is to process four φ2 bolt holes on the distribution circle φ, and the position of the four holes is required to be ≤ Φ0.4 relative to the standard A internal spline and B end face tooth.

In the prior art, when the four-hole jig for drilling the middle flange of the end-face tooth is working, the outer circle Φ3 of the large head of the middle flange of the end-face tooth is used as the positioning reference, and the internal spline is used as the positioning reference when pulling the end-face tooth. The measurement of spline and B end face teeth, but the positioning references of drilling four holes and drawing end face teeth are different, which will be reflected on the processed end face gear middle flange parts, affecting the processing accuracy and production efficiency of parts, and the qualified rate of the measured four hole positions Only 70%. Then design a hydraulic fixture with four holes drilled in the middle flange of the face gear, which can facilitate the loading and unloading of workpieces, accurate positioning, and improve the pass rate and stability of face gear parts, which is the demand of the market.

Utility model content

Aiming at the deficiencies of the existing technology, this utility model provides a four-hole hydraulic fixture for end-face tooth middle flange drilling, which adopts internal spline positioning to replace the original four-hole clamp mechanism for center flange outer circle positioning drilling, and improves product quality stability. and production efficiency.

In order to achieve the above purpose, the technical solution of this utility model is: a four-hole hydraulic fixture for drilling the middle flange of the end face teeth, including a base, a positioning plate, a hydraulic cylinder, a support seat, a spring, a pressing mechanism, a drilling template and a drilling template cover , the base includes a bottom plate and vertical support plates arranged on both sides of the bottom plate, the opposite surfaces of the two vertical support plates are provided with slots along their height direction, the positioning plate is set in the slot, the hydraulic pressure The base of the cylinder is fixed on the bottom plate, and the telescopic rod of the hydraulic cylinder is fixedly connected with the lower end surface of the positioning plate to drive the positioning plate to move up and down in the slot. The supporting seat includes a supporting lower seat and a supporting upper seat. The lower end surface of the seat is fixedly connected with the upper end surface of the positioning plate, and the upper end surface of the supporting lower seat is fixedly connected with the supporting upper seat through the hexagon socket head screw, so that the supporting seat moves up and down along the hexagon socket head screw, and the hexagon socket head screw Screws are used to limit the displacement of the supporting upper seat. The upper end surface of the supporting upper seat is provided with a dustpan-shaped groove, and the inner arc radius of the dustpan-shaped groove is the same as the outer radius of the small head of the middle flange of the end tooth. The two ends of the spring They are respectively fixed in the middle of the upper end surface of the supporting lower seat and the lower end surface of the supporting upper seat, and the expansion and contraction of the spring is controlled by the pressing mechanism. In the middle of the formwork, set the spline mandrel facing downwards and cooperating with the splines in the middle flange of the end face teeth, and the position of the center line of the spline mandrel, hydraulic cylinder and the inner arc of the dustpan-shaped groove does not exceed 0.1mm. The template is provided with a through hole for interference and affixation with the drill sleeve.

As a further improvement of the four-hole hydraulic clamp for drilling the middle flange of the end face teeth of the utility model, the pressing mechanism includes a supporting rib, a connecting rod and a joint, and the supporting rib is in a U-shaped structure and is fixedly connected to the connecting rod. They form a rectangular frame together, and are arranged around the support upper seat, and the support upper seat is provided with a long groove for clamping the support ribs. The middle part of the connecting rod is affixed to the joint, and the joint is affixed to the support lower seat through a threaded column.

Beneficial effect

1. The utility model provides a four-hole hydraulic clamp for drilling the middle flange of the end face teeth. The spline mandrel matched with the internal spline of the part is used to replace the original outer circle of the big head of the part as the positioning reference, and the positioning is accurate. The structure improves the Machining accuracy increases the production enthusiasm of workers, improves production efficiency, and is designed based on the original fixture, which is convenient for transformation and saves the processing cost of parts;

2. The utility model provides a four-hole hydraulic fixture for drilling the middle flange of the end tooth. When it is necessary to process end teeth of different specifications, that is, the size of the splines in the middle flange of the end tooth is different, it is only necessary to replace the drilling template. Realization, strong scalability;

3. The utility model provides a four-hole hydraulic clamp for drilling the middle flange of the end-face teeth. The upper end surface of the support base is provided with a dustpan-shaped groove, and the inner arc radius of the dustpan-shaped groove is the same as that of the small head of the end-face tooth middle flange. If the radius of the circle is the same, it is more convenient and quick to place and remove the face gear workpiece;

4. The utility model provides a four-hole hydraulic clamp for drilling the middle flange of the end-face teeth. Since a spring is arranged between the support lower seat and the support upper seat, when the end-face teeth are initially installed, because the spring is against the support upper seat, the support If the distance between the upper seat and the splined mandrel is smaller than the height of the end tooth, the spring is compressed by the set pressing mechanism, and the outer circle of the small head of the middle flange of the end tooth is placed in the dustpan-shaped groove, and the middle flange of the end tooth The spline through hole just fits the spline mandrel, and initially stabilizes the entire end tooth workpiece, and the concept is novel and practical.

Description of drawings

Fig. 1 is the front structure schematic diagram of the utility model fixture;

Fig. 2 is a schematic view of the back structure of the utility model fixture;

Fig. 3 is a structural schematic diagram of removing the end face tooth workpiece by the clamp of the present invention;

Fig. 4 is a structural schematic diagram of the clamp of the present invention pressing the end face tooth workpiece;

Fig. 5 is a schematic structural view of the utility model supporting the upper seat;

Fig. 6 is a structural schematic diagram of the pressing mechanism of the utility model;

Fig. 7 is the reference schematic diagram of drilling four holes in the middle flange of the end face gear in the prior art;

Among the figure: 1, base, 101, bottom plate, 102, vertical support plate, 2, positioning plate, 3, hydraulic cylinder, 4, support seat, 401, support lower seat, 402, support upper seat, 403, dustpan-shaped groove , 404, long strip groove, 5, spring, 6, pressing mechanism, 601, supporting rib, 602, connecting rod, 603, joint, 604, threaded column, 7, drilling template, 701, positioning pin, 702, flower Key mandrel, 8, drill cover, 9, hexagon socket cap screw, 10, middle flange of end face teeth.

Detailed ways

As shown in the figure: a four-hole hydraulic clamp for drilling the middle flange of the end face teeth, including a base 1, a positioning plate 2, a hydraulic cylinder 3, a support seat 4, a spring 5, a pressing mechanism 6, a drilling template 7 and a drilling template cover 8 The base 1 includes a bottom plate 101 and vertical support plates 102 arranged on both sides of the bottom plate 101. The opposite surfaces of the two vertical support plates 102 are provided with slots along their height directions, and the positioning plate 2 is set on the card. In the groove, the base of the hydraulic cylinder 3 is fixed on the bottom plate 101, and the telescopic rod of the hydraulic cylinder 3 is fixedly connected with the lower end surface of the positioning plate 2, so as to drive the positioning plate 2 to move up and down in the groove. The seat 4 includes a support lower seat 401 and a support upper seat 402, the lower end surface of the support lower seat 401 is affixed to the upper end surface of the positioning plate 2, and the upper end surface of the support lower seat 401 is affixed to the support upper seat 402 through the hex socket head cap screw 9, Make the support upper seat 402 move up and down along the hexagon socket head screw 9, the hexagon socket head screw 9 is used to limit the displacement of the support upper seat 402, the upper end surface of the support upper seat 402 offers a dustpan-shaped groove 403, and the dustpan-shaped The radius of the inner arc of the groove 403 is the same as the radius of the outer circle of the small head of the middle flange 10 of the end face teeth. The pressing mechanism 6 controls the expansion and contraction of the spring 5. The pressing mechanism 6 includes a supporting rib 601, a connecting rod 602 and a joint 603. The supporting rib 601 is in a U-shaped structure and is fixedly connected with the connecting rod 602. It forms a rectangular frame and is arranged around the support upper seat 402. The support upper seat 402 is provided with a long strip groove 404 for clamping the support rib 601. The middle part of the connecting rod 602 is fixedly connected to the joint 603, and the joint 603 is connected to the support lower seat 401 through the threaded column 604. Fixed connection; the drill template 7 is installed on the top of the two vertical support plates 102 through the positioning pin 701, and the middle of the drill template 7 is provided with a spline mandrel facing downward and cooperating with the spline in the middle flange 10 of the end face teeth 702, and the position of the center line of the spline mandrel 702, the hydraulic cylinder 3 and the inner arc of the dustpan-shaped groove 403 is not more than 0.1mm, and the drill template 7 is provided with a through hole for interference and affixation with the drill template sleeve 8 together.

The working process of the fixture is carried out in three stages. 1. When loading the end-face tooth workpiece, because the spring 5 bears against the support upper seat 402, the distance between the support upper seat 402 and the spline mandrel 702 is smaller than the height of the end-face tooth, and the hand moves downward Press the support rib 601, place the small end of the middle flange 10 of the end face tooth downwards in the dustpan groove 403 of the upper support seat 402, and then push the middle flange 10 of the end face tooth inward to reach the positioning spline core of the drill template 7 When the shaft 702 is in position, the support rib 601 is released, and the end face tooth workpiece is pressed into the spline mandrel 702 of the drill template 7 under the expansion and contraction of the spring 5 for positioning; 2. When the workpiece is pressed, the pressure of the hydraulic cylinder 3 function, the telescopic rod of the hydraulic cylinder 3 stretches out so that the positioning plate 2 drives the support lower seat 401 and the support upper seat 402 to press the end-face tooth workpiece from bottom to top; 3. When the end-face tooth workpiece is unloaded, the hydraulic pressure will The retraction of cylinder 3 telescopic rod makes the positioning plate 2 drive the support lower seat 401 and the support upper seat 402 to fall, and the processed workpiece is separated from the spline mandrel 702 of the drilling template 7 and falls with the support upper seat 402. At this time, the support upper seat 402 is supported by the spring. 5, so that the workpiece is still not completely separated from the spline mandrel 702, the support rib 601 needs to be manually pressed down to completely separate the workpiece from the spline mandrel 702 of the drill template 7, and then the workpiece is pushed outward, and the workpiece is removed. The process loops like this.

The five degrees of freedom of the end tooth workpiece are limited by the lower end surface of the drilling template 7 and the spline mandrel 702, and the sixth degree of freedom is limited by the support upper seat 402 tightening the end tooth workpiece. The drilling template 7 is fixed on the base 1, and the hydraulic clamp The dustpan-shaped groove 403 that is tight and supports the upper seat 402 is used for loading and unloading the end tooth workpiece. The drilling template 7 does not need to be removed when clamping the workpiece, and the positioning references of the two processes of drilling four holes and pulling the end tooth are internal splines, which improves the end tooth. The machining accuracy of the position of the four holes in the middle flange 10.

And when it is necessary to process end face teeth of different specifications, that is, the size of the splines in the middle flange 10 of the end face teeth is not the same, it only needs to replace the drill template 7 to achieve, and its expansibility is strong.

The new fixture overcomes the disadvantages of the original fixture. On the premise of ensuring the production efficiency of the parts, it has a simple structure, convenient clamping, convenient loading and unloading of the workpiece, saves time and effort, improves the machining accuracy, increases the enthusiasm of the workers for production, and improves the production efficiency. Productivity.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those who are familiar with this profession, without departing from the scope of the technical solution of the present utility model, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all without departing from the technical solution of the utility model Content, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (1)

1. A four-hole hydraulic clamp for drilling the middle flange of the end face teeth, which is characterized in that it includes a base (1), a positioning plate (2), a hydraulic cylinder (3), a support seat (4), a spring (5), and a press Mechanism (6), drilling template (7) and drilling template cover (8), the base (1) includes a bottom plate (101) and vertical support plates (102) arranged on both sides of the bottom plate (101), two vertical The opposite surface of the straight support plate (102) is provided with slots along its height direction, the positioning plate (2) is clamped in the slot, the base of the hydraulic cylinder (3) is fixed on the bottom plate (101), hydraulic pressure The telescopic rod of the cylinder (3) is fixedly connected to the lower end surface of the positioning plate (2) to drive the positioning plate (2) to move up and down in the slot, and the supporting seat (4) includes a supporting lower seat (401) And supporting the upper seat (402), the lower end surface of the supporting lower seat (401) is fixedly connected with the upper end surface of the positioning plate (2), and the upper end surface of the supporting lower seat (401) is connected with the supporting upper seat ( 402) is fixedly connected, so that the support upper seat (402) moves up and down along the hexagon socket head screw (9). ) is provided with a dustpan-shaped groove (403), and the radius of the inner arc of the dustpan-shaped groove (403) is the same as the radius of the outer circle of the small head of the middle flange (10) of the end tooth, and the two springs (5) The ends are respectively fixed in the middle of the upper end surface of the supporting lower seat (401) and the lower end surface of the supporting upper seat (402), and the expansion and contraction of the spring (5) is controlled by the pressing mechanism (6), and the drilling template (7 ) is installed on the top of two vertical support plates (102) through positioning pins (701), and the middle of the drill template (7) is provided with a spline core facing downwards and cooperating with the inner spline of the middle flange (10) of the end teeth shaft (702), and the position of the center line of the splined mandrel (702), hydraulic cylinder (3) and dustpan-shaped groove (403) does not exceed 0.1mm, and the drill template (7) has a through hole for Interfering and affixed with the jig set (8); The pressing mechanism (6) includes a supporting rib (601), a connecting rod (602) and a joint (603), and the supporting rib (601) has a U-shaped structure and is fixedly connected with the connecting rod (602) to form a Rectangular frame, and set around the support upper seat (402), the support upper seat (402) is provided with a long groove (404) for clamping the support rib (601), and the middle part of the connecting rod (602) is fixed to the joint (603), The joint (603) is fixedly connected with the supporting base (401) through the threaded post (604).