Tractor rear axle housing machining and positioning device

Abstract

The application relates to the technical field of tractor rear axle housing machining equipment, in particular to a tractor rear axle housing machining positioning device, which comprises a base; the number of the base is two, the two bases are symmetrically arranged left and right, the upper surface of the base is provided with a base seat, the middle part of the upper surface of the base seat is provided with a positioning groove, the left and right sides of the upper surface of the base seat are respectively provided with a hinge bracket I and a hinge bracket II, the hinge bracket I is rotationally connected with an L-shaped clamping plate through a pin shaft I, and the hinge bracket II is rotationally connected with an arc-shaped pressing plate through a pin shaft II. The device is innovatively clamped and fixed from the side of the rear axle housing, the structure completely avoids shielding the two ends and the middle region of the housing, the mounting holes at the two ends of the housing and the mounting hole of the central main speed reducer are completely exposed after one-time clamping, therefore, the boring machining of all key hole positions can be continuously completed in the same clamping state without disassembling the workpiece or replacing the clamp in the middle.

Description

Technical Field

[0001] This application relates to the technical field of tractor rear axle housing processing equipment, specifically a tractor rear axle housing processing positioning device. Background Technology

[0002] As a core load-bearing and transmission component in the tractor chassis system, the rear axle housing typically has a slender cylindrical or irregularly shaped structure. Both ends and the middle section are equipped with precision holes for mounting key transmission components such as bearings and half-shafts. The machining accuracy of these holes directly determines the assembly quality, transmission efficiency, and service life of the rear axle assembly. Therefore, high-precision and high-efficiency hole machining is crucial in the manufacturing process of the rear axle housing.

[0003] Currently, the common method used in the industry for boring tractor rear axle housings is to clamp and fix them from both ends. While this traditional clamping method provides a certain positioning reference and clamping force, it has the following significant drawbacks in actual machining:

[0004] Limited machining area necessitates multiple fixture changes: Because the fixture clamps from both ends of the housing, the fixture body inevitably obstructs or occupies machining space near the holes at both ends of the housing. This means that in a single clamping state, boring can usually only be performed on the holes located in the middle of the housing. When machining holes at both ends of the housing is required, the current fixture must be disassembled and replaced or adjusted to another fixture specifically for machining end holes, or the workpiece must be re-clamped and positioned. The aforementioned process of repeatedly disassembling and replacing fixtures and repositioning the workpiece is not only cumbersome and time-consuming, but also requires a high level of skill from the operator, making it prone to clamping errors due to human factors. Frequent fixture changes severely disrupt the continuous machining process, significantly reducing the overall boring efficiency. At the same time, the conversion of positioning references during multiple clamping processes inevitably introduces repetitive positioning errors. The accumulation of these errors affects the relative positional accuracy between different hole systems, posing a potential threat to the final assembly performance of the rear axle housing. Utility Model Content

[0005] This application provides a tractor rear axle housing machining and positioning device, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a tractor rear axle housing processing and positioning device, comprising a base; the number of bases is two, the two bases are symmetrically arranged left and right, a base is provided on the upper surface of the base, a positioning groove is provided in the middle of the upper surface of the base, a hinge bracket one and a hinge bracket two are respectively provided on the left and right sides of the upper surface of the base, the hinge bracket one is rotatably connected to an L-shaped clamping plate through a pin shaft one, the hinge bracket two is rotatably connected to an arc-shaped pressure plate through a pin shaft two, a hydraulic telescopic rod one for controlling its rotation around the pin shaft one is installed on the hinge bracket one, and a hydraulic telescopic rod two for controlling its rotation around the pin shaft two is installed on the arc-shaped pressure plate.

[0007] Preferably, the base is fixed to the base by bolts.

[0008] Preferably, the inner side of the positioning groove has the same shape as the outer side of both ends of the rear axle housing of the tractor to be processed.

[0009] Preferably, each of the bases has two hinge brackets one and two hinge brackets two on its upper surface, and the two hinge brackets one and two hinge brackets two are arranged symmetrically front and back.

[0010] Preferably, a pressure plate is fixedly connected to the upper end of the outer side of the L-shaped clamp by bolts.

[0011] Preferably, the arc-shaped pressure plate is fixedly connected to a positioning clamping block by bolts located at the upper end of its outer side surface.

[0012] Preferably, the fixed end of the hydraulic telescopic rod is mounted on the outer side of the base via a hinge support, and the telescopic end of the hydraulic telescopic rod is connected to the outer end of the L-shaped clamp via the hinge support.

[0013] Preferably, the fixed end of the second hydraulic telescopic rod is mounted on the outer side of the base via a hinge support, and the telescopic end of the second hydraulic telescopic rod is connected to the outer end of the arc-shaped pressure plate via the hinge support.

[0014] Compared with the prior art, the beneficial effects of this application are:

[0015] 1. This device innovatively adopts a clamping and fixing method from the side of the rear axle housing. This structure completely avoids the obstruction of the two ends and the middle area of ​​the housing, so that the mounting holes at both ends of the housing and the mounting hole of the main reducer in the center are fully exposed after one clamping. Therefore, without disassembling the workpiece or changing the fixture in the middle, the boring of all key holes can be completed continuously under the same clamping state, which fundamentally solves the problem of limited processing area and forced division of process caused by traditional two-end clamping.

[0016] 2. The device adopts a hydraulic telescopic rod to drive the clamping mechanism, which realizes the fast and automated clamping action. The operator only needs to control the pneumatic system to complete the positioning, clamping and releasing of the workpiece, which greatly shortens the auxiliary clamping time and effectively improves the overall efficiency of boring operation.

[0017] 3. The machining of all key holes is completed in one clamping, which minimizes the inevitable repeated positioning errors during multiple clamping processes. The design of the positioning groove and the outer side of both ends of the housing are consistent. Combined with the stable clamping force provided by the L-shaped clamping plate, the arc-shaped pressure plate and the optional positioning clamping block, the positioning reference of the workpiece is consistent and stable throughout the entire machining process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this application;

[0019] Figure 2 This is the main view of this application.

[0020] In the diagram: 1. Hinge bracket one, 2. L-shaped clamping plate, 3. Hydraulic telescopic rod one, 4. Base, 5. Base, 6. Hinge bracket two, 7. Hydraulic telescopic rod two, 8. Arc-shaped pressure plate, 9. Positioning groove, 10. Positioning clamping block. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the description of this application, if directional descriptions are involved, such as "up," "down," "front," "back," "left," "right," etc., indicating directional or positional relationships, they are based on the appendix. Figure 2 The orientations or positional relationships shown are for the convenience of describing this application and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When a feature is referred to as "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0023] Please see Figure 1-2This application provides the following technical solution: a tractor rear axle housing processing and positioning device, including a base 5; the number of bases 5 is two, the two bases 5 are symmetrically arranged on the left and right, a base 4 is provided on the upper surface of the base 5, a positioning groove 9 is provided in the middle of the upper surface of the base 4, a hinge bracket 1 and a hinge bracket 2 6 are respectively provided on the left and right sides of the upper surface of the base 4, the hinge bracket 1 is rotatably connected to an L-shaped clamping plate 2 through a pin shaft 1, the hinge bracket 2 6 is rotatably connected to an arc-shaped pressure plate 8 through a pin shaft 2, a hydraulic telescopic rod 3 for controlling its rotation around the pin shaft 1 is installed on the hinge bracket 1, and a hydraulic telescopic rod 7 for controlling its rotation around the pin shaft 2 is installed on the arc-shaped pressure plate 8.

[0024] Specifically, the tractor rear axle housing to be processed is lifted into the positioning groove 9 on the upper surface of the base 4 by the hoisting equipment. Then, the four L-shaped clamps 2 are controlled to fix the tractor rear axle housing from the top, and the four arc-shaped pressure plates 8 rotate synchronously to clamp the tractor rear axle housing from the front and rear sides, thereby realizing the positioning of the tractor rear axle housing.

[0025] Furthermore, the base 4 is fixed to the base 5 by bolts.

[0026] Specifically, the bolt installation facilitates the disassembly and replacement of base 4.

[0027] Furthermore, the inner side of the positioning groove 9 has the same shape as the outer side of both ends of the rear axle housing of the tractor to be processed.

[0028] Specifically, the positioning groove 9 is used to support both ends of the rear axle housing of the tractor to be processed.

[0029] Furthermore, each of the bases 4 has two hinge brackets 1 and two hinge brackets 6 on its upper surface, and the two hinge brackets 1 and two hinge brackets 6 are arranged symmetrically front to back.

[0030] Specifically, by pressing down and clamping from the front and rear, the rear axle housing of the tractor to be processed can be fixed.

[0031] Furthermore, a pressure plate is fixedly connected to the upper end of the outer side of the L-shaped clamp 2 by bolts.

[0032] Specifically, this design makes it easy to replace the pressure plate at any time.

[0033] Furthermore, the arc-shaped pressure plate 8 is fixedly connected to a positioning clamping block 10 by bolts located on the upper part of its outer side surface.

[0034] Specifically, the shape of the positioning clamp 10 fits the outer side of the rear axle housing of the tractor to be processed.

[0035] Furthermore, the fixed end of the hydraulic telescopic rod 3 is mounted on the outer side of the base 4 via a hinge support, and the telescopic end of the hydraulic telescopic rod 3 is connected to the outer end of the L-shaped clamp 2 via the hinge support.

[0036] Furthermore, the fixed end of the hydraulic telescopic rod 7 is mounted on the outer side of the base 4 via a hinge support, and the telescopic end of the hydraulic telescopic rod 7 is connected to the outer end of the arc-shaped pressure plate 8 via the hinge support.

[0037] In use: The rear axle housing to be machined is hoisted into the positioning slot 9 using a hoisting device. Then, the hydraulic telescopic rod 2 7 extends, causing the arc-shaped pressure plate 8 to rotate around the pin 2 until it is pressed tightly against the outer surface of the rear axle housing. Simultaneously, the hydraulic telescopic rod 1 extends, causing the L-shaped clamping plate 2 to rotate around the pin 1 until the pressure plate is pressed tightly against the upper surface of the rear axle housing. Afterwards, boring operations can be performed simultaneously on the upper surface and both sides of the outer surface of the rear axle housing.

[0038] It is worth noting that the extension and retraction of both hydraulic telescopic rod 3 and hydraulic telescopic rod 7 are controlled by an external hydraulic station.

[0039] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning device for machining a tractor rear axle housing, characterized in that: Includes a base (5); there are two bases (5), which are symmetrically arranged on the left and right. A base (4) is provided on the upper surface of the base (5). A positioning groove (9) is provided in the middle of the upper surface of the base (4). A hinge bracket one (1) and a hinge bracket two (6) are respectively provided on the left and right sides of the upper surface of the base (4). The hinge bracket one (1) is rotatably connected to an L-shaped clamp (2) through a pin shaft one. The hinge bracket two (6) is rotatably connected to an arc-shaped pressure plate (8) through a pin shaft two. A hydraulic telescopic rod one (3) is installed on the hinge bracket one (1) to control its rotation around the pin shaft one. A hydraulic telescopic rod two (7) is installed on the arc-shaped pressure plate (8) to control its rotation around the pin shaft two.

2. The tractor rear axle housing machining and positioning device according to claim 1, characterized in that: The base (4) is fixed to the base (5) by bolts.

3. The tractor rear axle housing machining and positioning device according to claim 1, characterized in that: The inner side of the positioning groove (9) is consistent with the outer side of both ends of the rear axle housing of the tractor to be processed.

4. The tractor rear axle housing machining and positioning device according to claim 1, characterized in that: Each of the bases (4) has two hinge brackets (1) and two hinge brackets (6) on its upper surface, and the two hinge brackets (1) and two hinge brackets (6) are arranged symmetrically in front and behind.

5. The tractor rear axle housing machining and positioning device according to claim 1, characterized in that: The upper end of the outer side of the L-shaped clamp (2) is fixedly connected to a pressure plate by bolts.

6. The tractor rear axle housing machining and positioning device according to claim 1, characterized in that: The arc-shaped pressure plate (8) is fixedly connected to a positioning clamp (10) by bolts on the upper part of its outer side surface.

7. A tractor rear axle housing machining and positioning device according to claim 1, characterized in that: The fixed end of the hydraulic telescopic rod (3) is mounted on the outer side of the base (4) through a hinge support, and the telescopic end of the hydraulic telescopic rod (3) is connected to the outer side end of the L-shaped clamp (2) through a hinge support.

8. A tractor rear axle housing machining and positioning device according to claim 1, characterized in that: The fixed end of the hydraulic telescopic rod 2 (7) is mounted on the outer side of the base (4) through a hinge support, and the telescopic end of the hydraulic telescopic rod 2 (7) is connected to the outer side end of the arc-shaped pressure plate (8) through a hinge support.

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