Efficient group machining device for valve bridge type parts

Abstract

The utility model provides an efficient group machining device for valve bridge parts, and belongs to the technical field of machining. Comprising a bottom plate, positioning pins, a double-sided fixing clamp, a pressing plate and equal-height blocks. The length of the bottom plate can be adjusted according to the size of the working table of the machine tool; the positioning pin is vertically fixed to the bottom plate and used for being inserted into a pin hole of a workpiece to achieve center positioning. The double-face fixing clamp is arranged on the bottom plate and used for clamping and positioning the opposite ends of the two symmetrically-arranged workpieces in one set at the same time. The pressing plate is used for pressing the workpiece; the equal-height blocks are arranged on the bottom plate and used for supporting the bottom face of a workpiece. The positioning pin, the double-face fixing clamp and the pressing plate jointly achieve six-point positioning of a workpiece. By means of the innovative clamp design, multiple workpieces can be positioned and clamped at the same time, and key characteristics can be completed through one-time machining. Compared with a traditional method, the machining efficiency is improved, the positioning precision is high, the structure is simple, adjustment is convenient, and the method is suitable for batch machining of various T-shaped parts.

Description

Technical Field

[0001] This utility model belongs to the field of machining technology, specifically relating to a high-efficiency group processing device for valve bridge parts, especially suitable for batch processing of T-shaped parts such as diesel engine valve bridges. Background Technology

[0002] The valve bridge is a key component of a diesel engine, and its structure is as follows: Figure 5-6 As shown, valve bridge components are used to simultaneously drive two or more valves, and their machining quality directly affects the engine's efficiency and performance. Valve bridge parts have strict dimensional tolerances, with a parallelism requirement of 0.015mm between the side holes / screw holes and the center pin hole. The conventional machining process involves first machining the center pin hole on a lathe, then aligning it by scribing, and finally machining one side hole on a vertical machining center as a positioning reference. A two-pin positioning method is used for clamping and positioning. Then, the other side hole is machined. During the machining process, the center pin hole and the side holes are processed in three separate steps, with only one part being machined at a time.

[0003] Traditional machining methods have the following problems: 1. The traditional machining method involves machining the two side holes in two separate processes, both of which require positioning or alignment using the central pin hole. This necessitates multiple clamping and positioning operations, resulting in large repeated positioning errors and affecting machining accuracy. 2. Each process uses a different positioning method, requiring independent clamping and alignment, leading to large machining errors. Furthermore, each clamping operation can only process one part, resulting in low efficiency. 3. The processes are dispersed, resulting in long preparation times and high production costs. 4. It requires highly skilled operators and results in poor quality stability.

[0004] Therefore, there is an urgent need for a processing device and method that can achieve efficient group processing, has a simple structure, and is easy to adjust. Utility Model Content

[0005] The technical problem solved by this utility model is to provide an efficient group processing device for valve bridge parts. The purpose of this utility model is to solve the problems of low efficiency and poor precision of traditional processing methods.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A high-efficiency group processing device for valve bridge parts, including a base plate, locating pins, double-sided fixing fixtures, pressure plates, and leveling blocks;

[0008] The base plate is used to be installed on the machine tool worktable, and its length can be adjusted according to the size of the machine tool worktable.

[0009] The positioning pin is vertically fixed to the base plate and is used to insert into the pin hole of the workpiece to achieve center positioning.

[0010] The double-sided fixing fixture is mounted on the base plate and is used to simultaneously clamp and position the opposite ends of two symmetrically arranged workpieces in a set.

[0011] The pressure plate is used to clamp the workpiece;

[0012] The contour blocks are set on the base plate to support the bottom surface of the workpiece;

[0013] The positioning pin, double-sided fixing fixture, and pressure plate together achieve six-point positioning of the workpiece.

[0014] Further, by adjusting the length of the base plate and the number of double-sided fixing fixtures, multiple sets of parts can be positioned and clamped simultaneously; the base plate is provided with multiple mounting holes for flexibly adjusting the positions of the positioning pins and double-sided fixing fixtures.

[0015] Further defining the above solution, each of the double-sided fixing clamps includes a double-sided clamp body, a wedge block, a positioning bolt, and a fixing screw;

[0016] The double-sided clamp body has symmetrical V-shaped positioning blocks on both sides and a U-shaped groove in the middle. The U-shaped groove makes the connection between the two V-shaped positioning blocks elastic. The upper openings of both sides of the U-shaped groove are inclined. The U-shaped groove in the middle of the double-sided clamp body is fixedly connected to the base plate by positioning bolts. The wedge block is inserted into the U-shaped groove and acts with the inclined surfaces on both sides to make the two V-shaped positioning blocks move slightly to both sides to contact the corresponding workpiece ends for positioning. The wedge block is connected to the base plate by fixing screws.

[0017] As a further limitation of the above scheme, the clamping surface of the V-shaped positioning block is provided with anti-slip texture.

[0018] Further defining the above solution, the pressure plate is connected to the base plate by bolts and nuts, the clamping force is adjustable, and the contact surface of the pressure plate is provided with elastic gaskets to prevent damage to the workpiece surface.

[0019] Further specifying the above solution, the base plate is made of high-strength cast iron or aluminum alloy material, and the surface is hardened to improve wear resistance and service life.

[0020] Advantages of this utility model compared to the prior art:

[0021] 1. This solution optimizes the fixture structure to achieve efficient machining of T-shaped parts such as valve bridges. It can achieve simultaneous machining of holes on both sides in one clamping, reducing the number of clamping operations. Furthermore, by using group modules, multiple workpieces can be positioned and clamped simultaneously, and key features can be completed in one machining operation. This enables efficient and high-quality group machining of parts, improving machining efficiency by more than 50%.

[0022] 2. The double-sided fixing fixture used in this solution can achieve simultaneous positioning and clamping of two parts. The fixture has a simple structure, low manufacturing cost, convenient maintenance, and easy operation, reducing the technical requirements for operators.

[0023] 3. Compared with traditional machining methods, the cutting parameters of this solution are easier to improve, resulting in higher efficiency;

[0024] 4. The processing method in this solution has low requirements for equipment and cutting tools; general-purpose equipment and cutting tools can meet the processing requirements, thus saving costs.

[0025] 5. This solution has good versatility and wide applicability. It can be extended to the processing of various T-shaped and plate parts, and has a wide range of applications and good promotional value.

[0026] 6. This scheme is reasonably designed, with a stable and reliable structure and strong safety; the processing method can meet the requirements for processing high-quality parts and has high processing efficiency. Attached Figure Description

[0027] Figure 1 This is a top view of the structure of the high-efficiency group processing device for valve bridge parts in this utility model;

[0028] Figure 2 This is a side view of the structure of the high-efficiency group processing device for valve bridge parts in this utility model;

[0029] Figure 3 This is a front view of the double-sided fixing clamp in this utility model;

[0030] Figure 4 This is a top view of the double-sided fixing clamp in this utility model;

[0031] Figure 5 This is a top view of the structure of a valve bridge component in the prior art;

[0032] Figure 6 This is a side view of the structure of a valve bridge component in the prior art. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Please see Figure 1-6 The embodiments of this utility model are described in detail below.

[0037] Example 1: A high-efficiency group processing device for valve bridge parts, including a base plate 1, a positioning pin 2, a double-sided fixing fixture 3, a pressure plate 4, and a height equalization block 6;

[0038] The base plate 1 is used to be installed on the machine tool worktable, and its length can be adjusted according to the size of the machine tool worktable; the positioning pin 2 is vertically fixed on the base plate 1 and is used to insert into the pin hole of the workpiece 5 to achieve center positioning; the double-sided fixing fixture 3 is set on the base plate 1 and is used to simultaneously clamp the opposite ends of two symmetrically arranged workpieces 5 in the positioning group; the pressure plate 4 is used to press the workpiece 5; the leveling block 6 is set on the base plate 1 and is used to support the bottom surface of the workpiece.

[0039] The positioning pin 2, the double-sided fixing clamp 3, and the pressure plate 4 together achieve six-point positioning of the workpiece.

[0040] In one specific embodiment, by adjusting the length of the base plate 1 and the number of double-sided fixing clamps 3, multiple sets of parts can be positioned and clamped simultaneously; the base plate 1 is provided with multiple mounting holes for flexibly adjusting the positions of the positioning pins 2 and the double-sided fixing clamps 3.

[0041] This embodiment allows for adjustment of the base plate length based on the size of the worktable, enabling simultaneous positioning and clamping of multiple sets of parts, thus improving processing efficiency; it also allows for group processing of the same processing elements; and enables batch processing of parts, significantly reducing the preparation time for part processing.

[0042] In one specific embodiment, each of the double-sided fixing fixtures 3 includes a double-sided fixture body 3-1, a wedge block 3-2, a positioning bolt 3-3, and a fixing screw 3-4; the double-sided fixture body 3-1 has symmetrical V-shaped positioning blocks 3-1-1 on both sides, and a U-shaped groove 3-1-2 in the middle of the double-sided fixture body 3-1. The U-shaped groove 3-1-2 makes the connection between the two V-shaped positioning blocks 3-1-1 elastic. The upper openings of both sides of the U-shaped groove 3-1-2 are inclined surfaces 3-1-3. The U-shaped groove 3-1-2 in the middle of the double-sided fixture body 3-1 is fixedly connected to the base plate 1 by the positioning bolt 3-3. The wedge block 3-2 is inserted into the U-shaped groove 3-1-2 and acts with the inclined surfaces 3-1-3 on both sides to make the two V-shaped positioning blocks 3-1-1 move slightly to both sides to contact the ends of the corresponding workpieces 5 on both sides for positioning. The wedge block 3-2 is connected to the base plate 1 by the fixing screw 3-4. Preferably, the clamping surface of the V-shaped positioning block 3-1-1 is provided with anti-slip texture.

[0043] This embodiment uses a double-sided fixing fixture, which can simultaneously position and clamp two parts with one fixture. The fixture has a simple structure, low manufacturing cost, convenient maintenance, and easy operation, reducing the technical requirements for operators.

[0044] In one specific embodiment, the pressure plate 4 is connected to the base plate 1 by bolts and nuts, the clamping force is adjustable, and the contact surface of the pressure plate 4 is provided with elastic gaskets to prevent damage to the workpiece surface.

[0045] Preferably, the base plate 1 is made of high-strength cast iron or aluminum alloy material, and the surface is hardened to improve wear resistance and service life.

[0046] To address the problems in existing technologies, this embodiment places the machining of the holes on both sides in the same process. By designing a positioning fixture, the bottom plane, the center pin hole, and the cylindrical surface on one side are used for positioning, and then the pressure plate is used for clamping, which ensures the six-point positioning of the part. Depending on the size of the worktable and the part, multiple parts can be clamped and processed at the same time, thereby improving work efficiency.

[0047] Example 2: A method for efficient group processing of valve bridge parts, comprising the following steps:

[0048] Install the base plate 1 on the machine tool worktable and position and clamp it;

[0049] Install the pin hole of workpiece 5 into the positioning pin 2, and support the bottom surface of the workpiece with the equal height block 6 to achieve Z-axis positioning;

[0050] Tighten the double-sided fixing clamp 3 to limit the opposite ends of the two symmetrically arranged workpieces 5, abut against the sides of the workpieces, and restrict their movement and rotation in the X and Y directions;

[0051] Use pressure plate 4 to press the upper surface of workpiece 5 to complete six-point positioning;

[0052] The machine tool, following the program, uses hole-making tools such as drilling, reaming, tapping, etc., to process the two end faces and hole structures of workpiece 5;

[0053] After processing is completed, loosen the pressure plate 4 and the double-sided fixing clamp 3, and remove the workpiece 5.

[0054] This machining method is suitable for efficient batch machining of diesel engine valve bridges, T-shaped parts, and other plate-type parts with similar structures.

[0055] This invention utilizes an innovative fixture design to simultaneously position and clamp multiple workpieces, enabling the completion of key features in a single machining operation. Compared to traditional methods, it increases processing efficiency by over 50%, provides high positioning accuracy, and features a simple structure and convenient adjustment, making it suitable for batch processing of various T-shaped parts.

[0056] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0057] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency group processing device for valve bridge parts, characterized in that: Includes base plate (1), positioning pin (2), double-sided fixing clamp (3), pressure plate (4), and leveling block (6); The base plate (1) is used to be installed on the machine tool worktable, and its length can be adjusted according to the size of the machine tool worktable. The positioning pin (2) is vertically fixed on the base plate (1) and is used to insert into the pin hole of the workpiece (5) to achieve center positioning; The double-sided fixing clamp (3) is set on the base plate (1) and is used to simultaneously clamp the opposite ends of two symmetrically arranged workpieces (5) in a positioning group; The pressure plate (4) is used to press the workpiece (5); The contour block (6) is set on the base plate (1) to support the bottom surface of the workpiece.

2. The high-efficiency group processing device for valve bridge parts according to claim 1, characterized in that: By adjusting the length of the base plate (1) and the number of double-sided fixing clamps (3), multiple sets of parts can be positioned and clamped simultaneously. The base plate (1) is provided with multiple mounting holes for flexibly adjusting the positions of the positioning pins (2) and the double-sided fixing clamps (3).

3. The high-efficiency group processing device for valve bridge parts according to claim 1, characterized in that: Each of the aforementioned double-sided fixing clamps (3) includes a double-sided clamp body (3-1), a wedge block (3-2), a positioning bolt (3-3), and a fixing screw (3-4). The double-sided fixture body (3-1) has symmetrical V-shaped positioning blocks (3-1-1) on both sides. The double-sided fixture body (3-1) has a U-shaped groove (3-1-2) in the middle. The U-shaped groove (3-1-2) makes the connection between the two V-shaped positioning blocks (3-1-1) elastic. The upper openings of the U-shaped groove (3-1-2) on both sides are inclined surfaces (3-1-3). The U-shaped groove (3-1-2) in the middle of the double-sided fixture body (3-1) is fixedly connected to the base plate (1) by positioning bolts (3-3). The wedge block (3-2) is inserted into the U-shaped groove (3-1-2) and acts with the inclined surfaces (3-1-3) on both sides to make the two V-shaped positioning blocks (3-1-1) move slightly to both sides and contact the ends of the corresponding workpieces (5) on both sides for positioning. The wedge block (3-2) is connected to the base plate (1) by fixing screws (3-4).

4. The high-efficiency group processing apparatus for valve bridge parts according to claim 3, characterized in that: The clamping surface of the V-shaped positioning block (3-1-1) is provided with anti-slip texture.

5. The high-efficiency group processing device for valve bridge parts according to claim 1, characterized in that: The pressure plate (4) is connected to the base plate (1) by bolts and nuts. The clamping force is adjustable, and the contact surface of the pressure plate (4) is provided with elastic gaskets to prevent damage to the workpiece surface.

6. The high-efficiency group processing apparatus for valve bridge parts according to claim 1, characterized in that: The base plate (1) is made of high-strength cast iron or aluminum alloy.

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