CN102554650B - Processing type tooth aligning device for auxiliary shafts of gearbox with oblique teeth and double auxiliary shafts and gears of auxiliary shafts, and tooth aligning method - Google Patents

Abstract

The invention relates to a gear alignment device and a gear alignment method of a countershaft and countershaft gear processing type of helical double countershaft gearbox. The gear alignment device includes a countershaft gear gear alignment processing mechanism and a countershaft gear alignment processing mechanism. The gear-tooth processing mechanism includes an L-shaped base, a positioning plate, a positioning mandrel, a clamping unit, and a positioning pin, wherein the axes of the positioning mandrel and the positioning pin are perpendicular to each other; the auxiliary shaft-tooth processing mechanism includes a base plate and a V-shaped positioning block , countershaft positioning pin, and countershaft clamping unit. The tooth alignment method includes the following steps: machining the positioning pin holes of the countershaft gear; processing each positioning pin hole separately; pressing the positioning pin into the countershaft gear pin hole and the positioning pin hole, and realizing the auxiliary alignment of each countershaft assembly through the pin hole as an intermediary. Shaft gear consistent relative positional relationship. The gear aligning device of the invention has simple structure, convenient operation, low manufacturing cost and easy realization of large-scale production.

Description

Countershaft and countershaft gear machining type gear aligning device and gear aligning method of helical double countershaft gearbox

technical field

The invention relates to a helical double countershaft gearbox countershaft and countershaft gear processing type gear aligning device and a gear aligning method, belonging to the field of double countershaft heavy truck gearboxes.

Background technique

The gearbox with double countershaft structure has the characteristics of large transmission torque and long service life. However, in order to ensure that the two countershaft gears mesh with the main shaft gear at the same time, the double countershaft structure requires the high consistency of the two countershaft gears when they rotate. The ring gears of each gear on the assembly have a consistent relative positional relationship with other gear countershaft gear ring gears, which is commonly referred to as paired teeth. The traditional straight teeth use one tooth or tooth groove as a reference, and the keyway is processed to realize the pairing. Due to the helical angle of the shaft assembly, the helical teeth have different circumferential positions at different shaft sections, so the existing straight tooth alignment method cannot be used, and accurate tooth alignment cannot be achieved in the case of multiple ring gears .

Contents of the invention

One of the objectives of the present invention is to provide an assembled gear aligning device for countershaft assembly of helical double countershaft gearbox, which realizes the positioning of the helical countershaft gear relative to the countershaft and meets the tooth alignment requirements of the countershaft assembly.

In order to achieve the above object, the present invention adopts the following technical solutions:

A countershaft and countershaft gear processing type gear alignment device for a helical double countershaft gearbox, including a countershaft gear alignment processing mechanism and a countershaft gear alignment processing mechanism, wherein the countershaft gear alignment processing mechanism includes an L-shaped base, A positioning plate arranged on the L-shaped base to cooperate with the end face of the countershaft gear, a positioning mandrel installed on the L-shaped base, a clamping unit arranged on the positioning mandrel, and a certain distance from the positioning plate for positioning an auxiliary The positioning pin of the shaft gear, wherein the axis of the positioning mandrel and the axis of the positioning pin are perpendicular to each other; the countershaft gear alignment processing mechanism includes a bottom plate, a V-shaped positioning block installed on the bottom plate for determining the positioning reference of the secondary shaft, and a certain distance from the V-shaped positioning block A countershaft positioning pin for positioning one countershaft shaft tooth, and a countershaft clamping unit located between the V-shaped positioning block and the countershaft positioning pin.

Further, the clamping unit includes a pressure plate, a stud, a bearing and a compression nut sequentially arranged on the positioning mandrel along the axial direction of the positioning mandrel.

Further, the auxiliary shaft clamping unit includes a fork seat fixed on the bottom plate, and a fork body which is integrally connected with the fork seat and cooperates with the auxiliary shaft.

Further, a sliding sleeve is installed on the bottom plate, a spring is installed on the auxiliary shaft positioning pin and the end, and the other end of the spring is connected with the gland, and the gland and the sliding sleeve are connected by threads, and the guiding part of the auxiliary shaft positioning pin is in clearance fit with the sliding sleeve.

Further, the end of the positioning pin in contact with the countershaft gear and the contacting end of the countershaft positioning pin with the countershaft shaft teeth are spherical, conical, isosceles trapezoidal or open isosceles groove.

The second aspect of the present invention is to provide a method for aligning the countershaft assembly by using the assembled gear aligning device.

In order to achieve the above object, the present invention adopts the following technical solutions:

A method for aligning the countershaft assembly using the assembled gear aligning device, comprising the following steps:

1) Use the inner hole and one end face of the countershaft gear as the positioning surface, rely on the positioning mandrel installed on the L-shaped base for positioning, and use the positioning pin at a certain distance from the positioning plate to position one tooth, which is the circumferential positioning reference of the countershaft gear. Use the clamping unit to clamp the countershaft gear and process the positioning pin hole of the countershaft gear;

2) Take the shoulder of the bearing at the rear end of the auxiliary shaft as the axial positioning reference, rely on the V-shaped positioning block installed on the bottom plate for positioning, and use the positioning pin of the auxiliary shaft to locate the first tooth of the auxiliary shaft shaft, which is the circumferential positioning reference of the auxiliary shaft. The shaft clamping unit clamps the auxiliary shaft and processes each positioning pin hole separately;

3) Put the heated gears of the countershaft into the corresponding positions of the countershaft in sequence, and use the pin hole of the countershaft gear and the corresponding positioning pin hole of the countershaft as the assembly positioning reference to ensure that the gears of the countershaft can rotate freely. , press the positioning pin into the countershaft gear pin hole and the positioning pin hole, and realize the consistent relative positional relationship of the countershaft gears of each countershaft assembly through the pin hole as an intermediary.

Beneficial effects of the present invention:

The shaft journal of the auxiliary shaft mounting bearing is positioned with one tooth or tooth groove of the ring gear, and the positioning is stable and accurate; the device can be used for aligning teeth of the straight tooth auxiliary shaft assembly, and there is no need to process the alignment keyway on the gear and the auxiliary shaft, reducing the cost The amount of processing reduces the processing cost; the tooth does not need to process the keyway, which eliminates the influence of conventional straight teeth on the deformation of the tooth keyway during heat treatment; the structure of the tooth alignment device is simple, easy to operate, low manufacturing cost, and easy to achieve large-scale production.

Description of drawings

Fig. 1 is the schematic diagram of the front view of the countershaft gear pairing gear processing mechanism;

Fig. 2 is the schematic diagram of the front view of the gear-to-gear processing mechanism of the auxiliary shaft;

Fig. 3 is a schematic diagram of the tooth alignment principle and method of the invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. The following description is only exemplary and does not limit the protection scope of the present invention.

The countershaft and countershaft gear processing gear aligning device of the present invention comprises a countershaft gear gear aligning mechanism and a countershaft gear aligning mechanism.

With reference to accompanying drawing 1, countershaft gear pair tooth processing mechanism comprises L-shaped base 2, the positioning plate 24 that is arranged on L-shaped base 2 and countershaft gear end face cooperates, the positioning mandrel 7 that is installed on L-shaped base 2, The clamping unit arranged on the positioning mandrel 7, and the positioning pin 11 for positioning a countershaft gear at a certain distance from the positioning plate 24; Pin holes, a T-shaped plate 9 is installed by bolts above the vertical part of the L-shaped base 2, and a bushing 10 is installed on the T-shaped plate, and the positioning pin 11 and the bushing 10 are clearance fit; the positioning plate 24 The vertical part of the L-shaped base 2 is connected with the hexagon socket bolt 8; the axis of the positioning mandrel 7 is perpendicular to the axis of the positioning pin 11; the clamping unit includes a pressure plate 5 arranged on the positioning mandrel 7 in sequence along the axis of the positioning mandrel 7 , bearing 4 and compression nut 3, bearing 4 is used to prevent countershaft gear from rotating.

In practice, the stud 25 is integrated with the positioning mandrel 7 through the hexagonal bolt 6, and correspondingly, an installation groove is provided on the pressure plate 5 in consideration of the convenience of installation.

With reference to accompanying drawing 2, the subshaft-tooth processing mechanism includes a bottom plate 16, a V-shaped positioning block 19 installed on the bottom plate 16 for determining the positioning reference of the sub-shaft, and a certain distance from the V-shaped positioning block 19 for positioning a sub-shaft shaft tooth. The countershaft positioning pin 22, and the countershaft clamping unit located between the V-shaped positioning block 19 and the countershaft positioning pin 22; the sliding sleeve 15 is installed on the bottom plate 16, the countershaft positioning pin 22 and the end are equipped with a spring 13, and the spring 13 The other end is connected with the gland 14, and the gland 14 is connected with the sliding sleeve 15 through threads, and the guide part of the auxiliary shaft positioning pin 22 is in clearance fit with the sliding sleeve 15; the auxiliary shaft clamping unit includes screws 18 fixed on the bottom plate 16 The fork seat 17 , the fork body 23 that is connected with the fork seat 17 as a whole through the pin shaft 20 and the pressure claw 21 is matched with the auxiliary shaft.

One end of the positioning pin 11 in contact with the countershaft gear and one end of the countershaft positioning pin 22 in contact with the countershaft shaft teeth are spherical, conical, isosceles trapezoidal or open isosceles groove.

Referring to accompanying drawings 1, 2 and 3, a method for aligning the countershaft assembly using the assembled gear aligning device includes the following steps:

1) Use the inner hole and one end surface of the countershaft gear as the positioning surface, rely on the positioning mandrel 7 installed on the L-shaped base 2 for positioning, and position a tooth with the positioning pin 11 at a certain distance from the positioning plate 24, which is the countershaft gear Circumferential positioning reference, install the pressure plate 5 and the bearing 4, tighten the compression nut 3, use the clamping unit to clamp the countershaft gear, and process the positioning pin hole of the countershaft gear;

2) Take the shoulder of the bearing at the rear end of the auxiliary shaft as the axial positioning reference, rely on the V-shaped positioning block 19 installed on the bottom plate 16 for positioning, and use the auxiliary shaft positioning pin 22 to locate the first tooth of the auxiliary shaft shaft, which is the circumferential positioning reference of the auxiliary shaft , tighten the pin shaft 20 and the pressure claw 21 to clamp the auxiliary shaft through the auxiliary shaft clamping unit, and process each positioning pin hole respectively;

3) Put the heated gears of the countershaft into the corresponding positions of the countershaft in sequence, and use the pin hole of the countershaft gear and the corresponding positioning pin hole of the countershaft as the assembly positioning reference to ensure that the gears of the countershaft can rotate freely. , press the positioning pin into the countershaft gear pin hole and the positioning pin hole, and realize the consistent relative positional relationship of the countershaft gears of each countershaft assembly through the pin hole as an intermediary.

The above examples are only for the purpose of illustrating the present invention, rather than limiting the present invention. Those skilled in the related art should be able to modify the technical solution of the present invention, or equivalently replace the materials used. Changes or modifications made based on the inspiration should fall within the scope of the present invention.

Claims (6)

1. a helical teeth two-pack shaft gearbox countershaft and countershaft gear machining type tooth mesh device, it is characterized in that: comprise countershaft gear to tooth organisation of working and countershaft to tooth organisation of working, wherein countershaft gear comprises L shaped base (2) to tooth organisation of working, be arranged on the location-plate (24) coordinating with countershaft gear end face on L shaped base (2), be arranged on the positioning core axle (7) on L shaped base (2), be arranged on the clamping unit on positioning core axle (7), with apart from location-plate (24) certain distance for locating the alignment pin (11) of a countershaft gear, wherein positioning core axle (7) axis is mutually vertical with alignment pin (11) axis, countershaft to tooth organisation of working comprise base plate (16), be arranged on base plate (16) for determine countershaft positioning datum V-arrangement locating piece (19), apart from V-arrangement locating piece (19) certain distance for locate the countershaft alignment pin (22) of a countershaft axle tooth and be positioned at V-arrangement locating piece (19) and countershaft alignment pin (22) between countershaft clamping unit.

2. machining type tooth mesh device according to claim 1, is characterized in that: clamping unit comprises platen (5), double-screw bolt (25), bearing (4) and the clamp nut (3) that is successively set on positioning core axle (7) along positioning core axle (7) axis direction.

3. machining type tooth mesh device according to claim 1, is characterized in that: countershaft clamping unit comprises the forked standard (17) being fixed on base plate (16), the fork body (23) coordinating with countershaft connecting as one with forked standard (17).

4. machining type tooth mesh device according to claim 3, it is characterized in that: sliding sleeve (15) is installed on base plate (16), the end of countershaft alignment pin (22) is provided with spring (13), spring (13) other end is connected with gland (14), and gland (14) is connected by screw thread with sliding sleeve (15), countershaft alignment pin (22) targeting part and sliding sleeve (15) matched in clearance.

5. according to machining type tooth mesh device described in claim 1 or 2 or 3 or 4, it is characterized in that: alignment pin (11) and countershaft gear join and touch one end that countershaft alignment pin (22) contacts with countershaft axle tooth and be spherical, conical, isosceles trapezoid or opening isosceles flute profile.

6. utilize machining type tooth mesh device described in claim 1 or 2 or 3 or 4 to carry out, to a tooth method, it is characterized in that to countershaft assembly, comprise the following steps:

1) take endoporus and a side end face of countershaft gear is locating surface, dependence is installed on apotting spindle (7) location of L shaped base (2), with alignment pin (11) location one tooth apart from location-plate (24) certain distance, for countershaft gear circumferential registration benchmark, utilize clamping unit that countershaft gear is clamped, processing countershaft gear dowel hole;

2) take the countershaft rear end bearing shaft shoulder as axial location benchmark, dependence is installed on V-arrangement locating piece (19) location on base plate (16), with countershaft alignment pin (22) location countershaft axle tooth one tooth, for countershaft circumferential registration benchmark, by countershaft clamping unit, countershaft is clamped, process respectively each dowel hole;

3) countershaft after heating is respectively kept off to gear and be inserted in order the position that countershaft is corresponding, take the corresponding dowel hole of countershaft gear pin-and-hole and countershaft as assembling and positioning benchmark, while guaranteeing that countershaft respectively keeps off gear and can freely rotate, to countershaft gear pin-and-hole and dowel hole, being pressed into alignment pin, is the consistent relative position relation of countershaft gear that intermediary realizes each countershaft assembly by pin-and-hole.

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