Gearbox shell positioning device

Abstract

The invention relates to a gearbox shell positioning device. The gearbox shell positioning device comprises an expanding mechanism, a telescopic mechanism and a fixing seat, a plurality of expanding heads capable of expanding horizontally are arranged on the expanding mechanism and can retract, the telescopic mechanism is used for driving the expanding mechanism to ascend and descend, and the fixing seat is used for fixing the telescopic mechanism so that the telescopic mechanism can be fixed to other mechanisms. The through hole is fixed through the expanding mechanism provided with a plurality of expanding heads capable of expanding horizontally, the overall structure is simple and reasonable, and meanwhile thin-wall gearbox shells are firmly limited.

Description

Technical Field

[0001] This invention belongs to the field of gearboxes, specifically a positioning device for the production of gearbox housings. Background Technology

[0002] In the field of gearbox manufacturing, mounting devices play a crucial role in ensuring product quality and production efficiency. However, the lack of mounting devices with through holes in some current gearbox products has exposed a series of production defects, posing challenges to the industry's development.

[0003] As a core component of automobiles, the transmission has a complex structure and requires extremely high manufacturing precision. In traditional transmission production processes, the lack of hole-fixing devices makes it difficult to accurately position and stably clamp the workpiece during machining. Taking the machining of the transmission housing as an example, this step requires frequent changes of machine tools and cutting tools, demanding high precision. Due to the lack of effective hole fixing, it is difficult to meet high-quality standards when using ordinary machine tools, resulting in a cumbersome process, increased turnover, and significantly reduced production efficiency. Moreover, transmission housings are often complex, thin-walled structures with poor rigidity, making clamping extremely difficult. The lack of hole fixing further exacerbates clamping instability, leading to increased machining errors and a higher scrap rate.

[0004] The lack of a hole-fixing device also brings many inconveniences in tool selection. Tool selection requires comprehensive consideration of factors such as machine tool performance, workpiece material characteristics, fixture reliability, and cutting fluid type. The compatibility requirements for tools vary depending on the material of the gearbox housing. For example, in the milling process of gray cast iron gearbox housings, a multi-axis gantry milling machine with Huaxing superhard CBN tools of BN-S300 material is often used for high-speed milling, while BNK30 material is used for boring to extend tool life. Aluminum alloy gearbox housings are prone to built-up edge formation during machining, affecting dimensional accuracy and surface roughness. For surface machining, CDW010 material is recommended, PCD reamers are used for bearing holes, and PCD drill-reamers are used for mounting holes. Careful treatment of the tool cutting edges is necessary to ensure good chip removal and prevent vibration. However, due to the lack of hole-fixing, it is difficult for the tool to maintain stable cutting force and cutting angle during cutting, which not only reduces tool life but also affects machining quality and increases production costs.

[0005] In summary, the lack of through-hole fixing or positioning devices in the gearbox industry has led to a series of production defects in areas such as machining accuracy, production efficiency, tool usage, and output shaft runout testing, severely hindering the high-quality development of the gearbox industry. To improve gearbox product quality, increase production efficiency, and promote technological progress in the industry, the development of suitable through-hole fixing devices has become an urgent priority. Summary of the Invention

[0006] In view of the problems existing in the prior art clamping, the technical problem to be solved by the present invention is to provide a hole positioning and fixing device that is simple in structure, easy to use, and specifically used for gearbox housing.

[0007] To achieve the above objectives, according to one aspect of the present invention, the invention is implemented through the following technical measures: a gearbox housing positioning device, comprising:

[0008] An expansion mechanism is provided with a plurality of expansion heads that can be expanded horizontally, and the plurality of expansion heads can be retracted.

[0009] A telescopic mechanism, which is used to drive the expansion mechanism to move up and down;

[0010] A fixing base is used to fix the telescopic mechanism, enabling the telescopic mechanism to be fixed with other mechanisms.

[0011] This gearbox housing positioning device is fixed in use by a fixed base, and the expansion mechanism is moved by a telescopic mechanism. When the head of the expansion mechanism enters the fixing hole of the gearbox housing, several expansion heads expand horizontally to position and fix the gearbox housing.

[0012] Furthermore, the expansion mechanism includes an expansion seat, an expansion rod, several expansion heads, and a power cylinder. The power cylinder is driven to move by a telescopic mechanism. One end of the expansion rod is connected to the power cylinder, and the other end is inserted into the center of the expansion seat. The side wall of the expansion seat is provided with a horizontal through hole communicating with the center of the expansion seat. The horizontal through hole is for the expansion heads to be inserted. The expansion heads are assembled with the expansion rod. The expansion heads are fixed to the workpiece hole wall by moving the expansion rod downward. When the expansion rod is reset, the expansion heads are also reset.

[0013] Furthermore, the outer wall of the expansion rod is provided with several downward-sloping surfaces, and each surface is provided with a dovetail groove. The inner end of the expansion head is provided with a locking head that is engaged in the dovetail groove. The dovetail groove slides along the locking head and the expansion head moves back and forth through the slope.

[0014] Furthermore, the outer end of the expansion head is also provided with an elastic head.

[0015] Furthermore, the expansion seat is hollow, and a cover plate is movably fixed at the bottom of the expansion seat.

[0016] Furthermore, the telescopic mechanism is a piston or a telescopic cylinder.

[0017] Furthermore, the gearbox housing positioning device also includes an auxiliary clamp, which consists of a clamp body and a lifting cylinder that drives the clamp body to move up and down.

[0018] Furthermore, the cylinder shaft of the lifting cylinder is provided with a connector, the connector is provided with a ring-shaped bayonet, the upper end of the bayonet body is provided with a connecting seat, the connecting seat is provided with a storage cavity, the upper end of the storage cavity is provided with a notch, and the bayonet is locked at the notch, so that the connectors on both sides of the bayonet play a locking role.

[0019] Compared with the prior art, the advantages of the present invention are: the through hole is fixed by an expansion mechanism with several expansion heads that can expand horizontally, and the auxiliary clamp head can further play the role of limiting and clamping. Attached Figure Description

[0020] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with their description, serve to explain the principles of the disclosure. These drawings are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification. In the drawings:

[0021] Figure 1 This is a diagram showing the usage state of a gearbox housing positioning device according to the present invention.

[0022] Figure 2 This is a schematic diagram of the expansion head assembly according to the present invention.

[0023] The specific labels in the attached figures are as follows:

[0024] 1. Expansion mechanism; 2. Telescopic mechanism; 3. Fixed base; 4. Expansion head; 5. Expansion base; 6. Expansion rod; 7. Horizontal through hole; 8. Inclined surface; 9. Dovetail groove; 10. Elastic head; 11. Cover plate; 12. Auxiliary clamp; 13. Clamp body; 14. Lifting cylinder; 15. Connector; 16. Ring-shaped bayonet; 17. Notch. Detailed Implementation

[0025] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” other components or features would subsequently be positioned “above” said other components or features. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0026] Example 1

[0027] Please refer to Figure 1 and Figure 2 This embodiment provides a gearbox housing positioning device including an expansion mechanism 1, a telescopic mechanism 2, and a fixed base 3. The fixed base 3 allows the gearbox housing positioning device to be fixed to other devices. The telescopic mechanism 2 is preferably a piston or a telescopic cylinder. The lower end of the push rod of the telescopic mechanism 2 is fixed to the expansion mechanism 1. The expansion mechanism 1 includes an expansion seat 5, a lifting rod 6, several expansion heads 4, and a power cylinder. The expansion seat 5 has a central through hole, and a cover plate 11 is movably fixed to the lower end of the expansion seat 5. The outer wall of the expansion seat 5 has multiple horizontally arranged horizontal through holes 7 that communicate with the central through hole. Preferably, there are at least three. Furthermore, triangularly distributed on the outer wall of the expansion seat 5, each horizontal through hole 7 has an expansion head 4 inserted into it, and an elastic head 10 (which can be made of rubber material) is fixed on the outside of the expansion head 4. The aforementioned power cylinder is driven to move by the telescopic mechanism 2. The upper end of the expansion rod 6 is connected to the power cylinder, and the lower end is inserted into the center of the expansion seat 5. The outer wall of each horizontal through hole 7 of the aforementioned expansion rod 6 is machined with a downwardly oriented inclined surface 8, and a dovetail groove 9 is machined at each inclined surface 8. The inner end of the aforementioned expansion head 4 is machined with a locking head that is engaged in the dovetail groove 9. The dovetail groove 9 can slide along the locking head, and the expansion head 4 can move back and forth through the inclined surface 8.

[0028] In use, the telescopic mechanism 2 drives the expansion mechanism 1 to move back and forth, so that the lower side of the expansion mechanism 1 can pass through the through hole of the gearbox housing and enter the gearbox housing. At this time, the power cylinder drives the expansion rod 6 to move down, so that the expansion head 4 moves outward through the inclined surface 8 to lock.

[0029] Example 2

[0030] Example 2 adds an auxiliary clamp 12 to Example 1. The auxiliary clamp 12 consists of a clamp body 13 and a lifting cylinder 14 that drives the clamp body 13 to move up and down. In this way, the clamp body 13 can further fix the gearbox housing or position the gearbox housing.

[0031] As a preferred structure, the cylinder shaft of the lifting cylinder 14 is provided with a connector 15, the connector 15 is provided with a ring-shaped bayonet 16, the upper end of the bayonet body 13 is provided with a connecting seat, the connecting seat is provided with a storage cavity, the upper end of the storage cavity is provided with a notch 17, the bayonet 16 is engaged at the notch 17, so that the connectors 15 on both sides of the bayonet 16 play a locking role, and the above design realizes quick disassembly.

[0032] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. A gearbox housing positioning device, characterized in that: include: An expansion mechanism is provided with a plurality of expansion heads that can be expanded horizontally, and the plurality of expansion heads can be retracted. A telescopic mechanism, which is used to drive the expansion mechanism to move up and down; A fixing base is used to fix the telescopic mechanism, enabling the telescopic mechanism to be fixed with other mechanisms.

2. The gearbox housing positioning device according to claim 1, characterized in that: The expansion mechanism includes an expansion seat, an expansion rod, several expansion heads, and a power cylinder. The power cylinder is driven to move by a telescopic mechanism. One end of the expansion rod is connected to the power cylinder, and the other end is inserted into the center of the expansion seat. The side wall of the expansion seat is provided with a horizontal through hole communicating with the center of the expansion seat. The horizontal through hole is for the expansion heads to be inserted. The expansion heads are assembled with the expansion rod. The expansion heads are fixed to the workpiece hole wall by moving the expansion rod downward. When the expansion rod is reset, the expansion heads are also reset.

3. The gearbox housing positioning device according to claim 2, characterized in that: The outer wall of the expansion rod is provided with several downward-sloping surfaces, and each surface is provided with a dovetail groove. The inner end of the expansion head is provided with a locking head that is engaged in the dovetail groove. The dovetail groove slides along the locking head and the expansion head moves back and forth through the slope.

4. A gearbox housing positioning device according to claim 3, characterized in that: The outer end of the expansion head is also equipped with an elastic head.

5. A gearbox housing positioning device according to claim 2, characterized in that: The expansion seat is hollow, and a cover plate is movably fixed at the bottom of the expansion seat.

6. A gearbox housing positioning device according to claim 1, characterized in that: The telescopic mechanism is a piston or a telescopic cylinder.

7. A gearbox housing positioning device according to any one of claims 1-6, characterized in that: The gearbox housing positioning device also includes an auxiliary clamp, which consists of a clamp body and a lifting cylinder that drives the clamp body to move up and down.

8. A gearbox housing positioning device according to claim 7, characterized in that: The lifting cylinder has a connector on its cylinder shaft, and a ring-shaped bayonet on the connector. The upper end of the bayonet body has a connecting seat, and the connecting seat has a storage cavity. The upper end of the storage cavity has a notch. The bayonet is engaged with the notch, so that the connectors on both sides of the bayonet can be locked.

Images