Fixing clamp for machining middle shell of automobile gearbox

Abstract

The utility model discloses a fixing clamp for machining a middle shell of an automobile gearbox. The fixing clamp comprises a supporting base capable of supporting the middle shell of the automobile gearbox, a transverse clamping assembly arranged on the supporting base and a linkage type vertical clamping assembly arranged on the supporting base. By means of the linkage type vertical clamping assembly, when the gearbox middle shell needs to be machined, an operator can lift the gearbox middle shell integrally and place the gearbox middle shell on the supporting base through related equipment, at the moment, the primary pressing part is matched with the secondary pressing part, the pressing arm moves to the position above the gearbox middle shell, and then the gearbox middle shell is machined. The gearbox middle shell is clamped and fixed through the transverse clamping device, then the gearbox middle shell is clamped between the pressing arm and the supporting base through the vertical telescopic device, the vertical telescopic device is matched with the transverse clamping assembly, and when the size error of the gearbox middle shell is large, the gearbox middle shell is clamped and fixed through the transverse clamping assembly. And damage to the gearbox middle shell when the gearbox middle shell is directly clamped is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to a fixing fixture for processing a middle shell of an automobile gearbox. Background Art

[0002] The middle case of an automobile gearbox is usually the part of the main structure of the gearbox located between the front case and the rear case of the gearbox. Its interior can accommodate core transmission components such as the gearbox gear set, synchronizer, and shift mechanism. Common automobile gearbox middle cases are mostly made of cast iron or aluminum alloy. After making the rough mold, the operator will place the rough mold as a whole on the corresponding fixing fixture. After subsequent mechanical processing, electroplating and coating, and inspection, the manufacturing of the automobile gearbox middle case is completed.

[0003] The fixing fixtures used in the processing of common automobile gearbox middle shells are mostly composed of a metal support frame and a hydraulic cylinder or an air cylinder arranged on the metal frame. When clamping the gearbox middle shell, the operator hoists the gearbox middle shell onto the fixture through an instrument, and the control device controls the movement of the air cylinder or the hydraulic cylinder according to the preset data to clamp and fix the gearbox middle shell. However, due to the certain error in the thickness of the gearbox middle shell during the production process, when the error of the gearbox middle shell exceeds the set error, the hydraulic cylinder or the air cylinder that expands and contracts according to the fixed data is easy to cause a certain depression on the surface of the middle shell during the process of clamping and fixing the gearbox middle shell, affecting the production quality of the gearbox middle shell. Utility Model Content

[0004] In order to solve the above problems, the utility model provides the following technical solutions:

[0005] A fixing fixture for machining a middle housing of an automobile gearbox, comprising:

[0006] A support base, which is used to support the middle shell of the automobile gearbox;

[0007] A transverse clamping assembly, comprising a transverse telescopic device disposed on a support base, and a fixed support portion disposed opposite to the transverse telescopic device, wherein the fixed support portion can extend into the interior of the gearbox middle shell, and one end of the transverse telescopic device can move linearly toward the fixed support portion;

[0008] A linkage type vertical clamping assembly, comprising a primary clamping portion disposed on the surface of a support base, and a secondary clamping portion disposed on the surface of the primary clamping portion;

[0009] The surface of the secondary pressing part away from the fixed pressing part is provided with a vertical telescopic device that can be telescoped toward the support base, and the primary pressing part can drive the secondary pressing part to move, so that the vertical telescopic device on its surface contacts the surface of the car;

[0010] The primary pressing part can drive the secondary pressing part to move, leaving space for the gearbox middle shell to be vertically lowered onto the support base.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, the secondary pressing portion is also distributed on the surface of the support base, which can clamp and fix the bottom of the gearbox middle shell.

[0013] Furthermore, the fixed support portion includes a limiting plate and a fixed mounting member capable of fixing the limiting plate on the surface of the support base, and the limiting plate can penetrate from the opening on the surface of the gearbox into the interior thereof.

[0014] Furthermore, the number of the fixed support parts is at least two.

[0015] Furthermore, the primary pressing portion includes a support member arranged on the surface of the support base, and a traction device arranged on the surface of the support member.

[0016] Furthermore, the secondary clamping part includes a clamping arm and a movable connecting part connecting the clamping arm and the support member, the movable connecting part is located at the end of the clamping arm, the movable end of the traction device is connected to the surface of the clamping arm, and the traction device can drive the end of the clamping arm away from the support member to move, and the vertical telescopic device is arranged at the end of the clamping arm away from the support member.

[0017] Furthermore, the movable connecting member is connected to the clamping arm and the supporting member respectively through a rotating shaft, and the movable connecting member is located between the vertical telescopic device and the traction device.

[0018] Furthermore, the traction device is located outside the support base on the surface of the support member.

[0019] Furthermore, the surface of the support base is provided with a plurality of protrusions capable of limiting the position of the gearbox middle shell, the edges of the protrusions are provided with downwardly inclined slopes, and the secondary clamping portion located on the support base is located on the surface of the protrusions.

[0020] Beneficial Effects

[0021] Compared with the prior art, the utility model, through the provided linkage type vertical clamping assembly, can, when it is necessary to process the gearbox middle shell, the operator can hoist the gearbox middle shell as a whole and place it on the supporting base through relevant equipment. At this time, the primary clamping part cooperates with the secondary clamping part to allow the clamping arm to move above the gearbox middle shell, and the gearbox middle shell is first clamped and fixed by the transverse clamping device, and then the gearbox middle shell is clamped between the clamping arm and the supporting base by the vertical telescopic device, which cooperates with the transverse clamping assembly to effectively and stably clamp the gearbox middle shell. When the size error of the gearbox middle shell is large, the damage to the gearbox middle shell caused by directly clamping the gearbox middle shell can be effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 It is a front view structural schematic diagram of the utility model;

[0025] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0026] Figure 4 A schematic diagram of the three-dimensional structure of the gearbox middle shell installed for the utility model;

[0027] Figure 5 The utility model is a front view structural diagram of a gearbox middle shell installed;

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1. Support base; 2. Horizontal clamping assembly; 21. Horizontal telescopic device; 22. Fixed support part; 221. Limiting plate; 222. Fixed mounting part; 3. Linked vertical clamping assembly; 31. Primary clamping part; 311. Support part; 312. Pulling device; 32. Secondary clamping part; 321. Clamping arm; 322. Active connecting part; 33. Vertical telescopic device. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] It should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the technical products are usually placed when in use. They are only for the convenience of describing the present technology and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present technology.

[0034] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] See also Figure 1-5 A fixing fixture for processing a middle shell of an automobile gearbox comprises a supporting base 1 capable of supporting the middle shell of the automobile gearbox, a transverse clamping assembly 2 arranged on the supporting base 1, and a linked vertical clamping assembly 3 on the supporting base 1.

[0036] Among them, the transverse clamping assembly 2 includes a transverse telescopic device 21 arranged on the support base 1, and a fixed support portion 22 distributed relative to the transverse telescopic device 21, and the fixed support portion 22 can extend into the interior of the gearbox middle shell, and one end of the transverse telescopic device 21 can make a linear motion toward the fixed support portion 22.

[0037] Specifically, the linked vertical clamping assembly 3 includes a primary clamping portion 31 arranged on the surface of the support base 1, and a secondary clamping portion 32 arranged on the surface of the primary clamping portion 31. The surface of the secondary clamping portion 32 away from the fixed clamping portion is provided with a vertical telescopic device 33 that can be telescoped toward the support base 1. The primary clamping portion 31 can drive the secondary clamping portion 32 to move, so that the vertical telescopic device 33 on its surface is in contact with the surface of the car. The primary clamping portion 31 can drive the secondary clamping portion 32 to move, leaving space for the gearbox middle shell to be vertically lowered onto the support base 1, and the lateral telescopic device 21 and the vertical telescopic device 33 can both be common hydraulic cylinders. At the same time, an oil circuit control device that can control the internal oil pressure of the hydraulic cylinder can also be arranged on the device.

[0038] When the gearbox middle shell needs to be processed, the operator hoists the gearbox middle shell as a whole through relevant equipment and places it on the support base 1. At this time, the primary clamping part 31 cooperates with the secondary clamping part 32 to allow the clamping arm 321 to move above the gearbox middle shell. The gearbox middle shell is first clamped and fixed by the horizontal clamping device, and then the vertical telescopic device 33 is used to clamp the gearbox middle shell between the clamping arm 321 and the support base 1, and cooperates with the horizontal clamping component 2 to effectively and stably clamp the gearbox middle shell.

[0039] In order to adaptively clamp and fix the gearbox middle shell, the fixed support part 22 includes a limit plate 221 and a fixed mounting part 222 capable of fixing the limit plate 221 on the surface of the support base 1. The limit plate 221 can penetrate from the opening on the gearbox surface to the interior thereof. As shown in the figure, when the gearbox middle shell is placed on the support base 1, the limit plate 221 can penetrate from the opening on the gearbox middle shell. At this time, the lateral telescopic device 21 can be extended to push against the gearbox middle shell to form a clamp with the limit plate 221. In order to ensure the controllability of the clamping process, an appropriate amount of pressure sensors can also be provided on the lateral telescopic device 21 to achieve accurate clamping of the gearbox middle shell.

[0040] To ensure stable clamping of the gearbox middle housing, the number of the fixing support parts 22 is at least two, preferably two.

[0041] To ensure that the heavier gearbox middle shell can be placed in a vertical direction on the support base 1, the primary clamping part 31 includes a support member 311 arranged on the surface of the support base 1, and a traction device 312 arranged on the surface of the support member 311, wherein the support member 311 can be a common base structure, and the traction device 312 can be a hydraulic telescopic rod structure.

[0042] The secondary clamping part 32 includes a clamping arm 321 and a movable connecting member 322 connecting the clamping arm 321 and the support member 311. The movable connecting member 322 is located at the end of the clamping arm 321. The movable end of the traction device 312 is connected to the surface of the clamping arm 321, and the traction device 312 can drive the end of the clamping arm 321 away from the support member 311 to move. The vertical telescopic device 33 is arranged at the end of the clamping arm 321 away from the support member 311. The traction device 312 can be connected to the clamping arm 321 through a rotating shaft. The two and the movable connecting member 322 form a lever structure.

[0043] Considering that the gearbox middle shell as a whole is a shell structure, it is easy to become loose due to the vibration generated during processing if it is clamped in two directions. The secondary clamping part 32 is also distributed on the surface of the support base 1, which can clamp and fix the bottom of the gearbox middle shell.

[0044] In some embodiments, to ensure that the clamping arm 321 can be extended to a sufficient angle, the movable connecting member 322 is respectively connected to the clamping arm 321 and the support member 311 through a rotating shaft, and the movable connecting member 322 is located between the vertical telescopic device 33 and the traction device 312, and the traction device 312 is located outside the support base 1 on the surface of the support member 311.

[0045] In other embodiments, in order to provide preliminary guidance for the gearbox middle shell placed on the support base 1, a plurality of protrusions capable of limiting the position of the gearbox middle shell are provided on the surface of the support base 1, and a downwardly inclined slope is provided at the edge of the protrusion, and the secondary clamping portion 32 located on the support base 1 is located on the surface of the protrusion.

[0046] In the description of this technology, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this technology can be understood according to specific circumstances.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fixing fixture for machining the middle shell of an automobile gearbox, characterized in that: include: A support base (1) for supporting the middle housing of a vehicle gearbox; A transverse clamping assembly (2), comprising a transverse telescopic device (21) disposed on a support base (1), and a fixed support portion (22) disposed opposite to the transverse telescopic device (21), wherein the fixed support portion (22) is capable of extending into the interior of a gearbox middle shell, and one end of the transverse telescopic device (21) is capable of performing linear motion toward the fixed support portion (22); A linked vertical clamping assembly (3), comprising a primary clamping portion (31) disposed on the surface of a support base (1), and a secondary clamping portion (32) disposed on the surface of the primary clamping portion (31); The surface of the secondary pressing part (32) away from the fixed pressing part is provided with a vertical telescopic device (33) capable of telescoping toward the support base (1), and the primary pressing part (31) can drive the secondary pressing part (32) to move, so that the vertical telescopic device (33) on its surface contacts the surface of the automobile; The primary pressing part (31) can drive the secondary pressing part (32) to move, leaving space for the gearbox middle shell to be vertically lowered onto the support base (1).

2. A fixing fixture for machining a middle housing of an automobile gearbox according to claim 1, characterized in that: The secondary pressing portion (32) is also distributed on the surface of the support base (1), and is capable of clamping and fixing the bottom of the gearbox middle shell.

3. A fixing fixture for machining a middle housing of an automobile gearbox according to claim 2, characterized in that: The fixed support portion (22) comprises a limiting plate (221) and a fixed mounting member (222) capable of fixing the limiting plate (221) on the surface of the support base (1); the limiting plate (221) can penetrate into the interior of the gearbox from an opening on the surface of the gearbox.

4. A fixing fixture for machining a middle housing of an automobile gearbox according to claim 3, characterized in that: The number of the fixed support parts (22) is at least two.

5. A fixing fixture for machining a middle housing of an automobile gearbox according to claim 4, characterized in that: The primary pressing portion (31) comprises a support member (311) provided on the surface of the support base (1), and a traction device (312) provided on the surface of the support member (311).

6. A fixing fixture for machining a middle housing of an automobile gearbox according to claim 5, characterized in that: The secondary clamping portion (32) comprises a clamping arm (321) and a movable connecting member (322) connecting the clamping arm (321) and the supporting member (311); the movable connecting member (322) is located at the end of the clamping arm (321); the movable end of the traction device (312) is connected to the surface of the clamping arm (321), and the traction device (312) can drive the clamping arm (321) to move away from one end of the supporting member (311); and the vertical telescopic device (33) is arranged at one end of the clamping arm (321) away from the supporting member (311).

7. A fixing fixture for machining a middle housing of an automobile gearbox according to claim 6, characterized in that: The movable connecting member (322) is respectively connected to the pressing arm (321) and the supporting member (311) via a rotating shaft, and the movable connecting member (322) is located between the vertical telescopic device (33) and the traction device (312).

8. The fixing fixture for machining the middle housing of an automobile gearbox according to claim 7, characterized in that: The traction device (312) is located at a position outside the support base (1) on the surface of the support member (311).

9. A fixing fixture for machining a middle housing of an automobile gearbox according to claim 8, characterized in that: The surface of the support base (1) is provided with a plurality of protrusions capable of limiting the position of the gearbox middle shell, and the edges of the protrusions are provided with downwardly inclined slopes, and the secondary pressing portion (32) located on the support base (1) is located on the surface of the protrusions.

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