A processing technology for processing multiple high-precision slider parts

Abstract

The present invention discloses a processing technology for processing multiple high-precision slider-type parts, comprising the following steps: S1, rough milling the material to obtain a block material; S2, defining the end face with more processing elements as the large end face and the end face with fewer processing elements as the small end face according to the processing requirements, and first processing the large end face; S3, turning the material over and placing the material on the first fixture to process the small end face; S4, placing the material on the second fixture for fine processing. The same tool processing trajectory can be merged to reduce the number of tool changes and idle travel distance, thereby shortening the processing time of a single product and improving production efficiency. The fixture has a simple structure and is easy to operate. Multiple products can be processed in one clamping, which can better guarantee the dimensional accuracy and form and position tolerance of the parts and reduce the intensity of manual labor. The consistency of the part position accuracy is improved, tool wear is slowed down, and tool consumption is reduced. The problem of low processing efficiency, low positioning accuracy, and complex operation of existing slider-type parts is solved.

Description

Technical Field

[0001] The invention belongs to the field of mechanical processing technology, and in particular relates to a processing technology for processing multiple high-precision slider parts. Background Art

[0002] Slider parts must meet multiple requirements in mechanical movement, such as guiding accuracy, ensuring fit accuracy and stability, and controlling load and vibration. These requirements together constitute high standards and high requirements for part size and position accuracy. Figure 3 As shown, the slider material is TC4, and the initial blank of the part being processed is a small square sheet. Traditional vise clamping is often used. The vise jaws clamp the two end faces of the part, and the bottom face is ironed to complete the fine milling of the hexagon as a reference. The first face is fine milled first with the same clamping method, and then the second face is processed to complete the part processing in sequence. However, when processing the second face, it is affected by the dimensional position accuracy, and manual correction is required to keep the parallelism error of the upper and lower planes of the part within 0.02mm. This requires a very high level of operator skill. In addition, the size of the part clamping force, the cutting force during processing, the cutting heat, etc. are all affected. It will cause problems such as deformation of parts, often resulting in the dimensional position accuracy of parts being at the limit or out of tolerance, resulting in a low part qualification rate and it is difficult to ensure the consistency of processing quality. In addition, when processing the arc surface of the slider, a ball head tool is often used to complete the arc surface processing. Due to the tip of the ball head tool having a zero cutting speed, the residual height when processing the arc surface, and the tool vibration causing rapid wear of the tool, the combined results in not only low processing efficiency of the parts, high tool consumption and very high labor intensity for the operators. In response to this situation, a processing technology method for processing multiple high-precision slider parts was invented. Summary of the Invention

[0003] The purpose of the present invention is to provide a processing technology for processing multiple high-precision slider-type parts to solve the problems of low processing efficiency, low positioning accuracy and complex operation of existing slider-type parts.

[0004] In order to solve the above problems, the present invention discloses a processing technology for processing multiple high-precision slider parts, comprising the following steps:

[0005] S1, rough milling the material to obtain block material;

[0006] S2. According to the processing requirements, define the end face with more processing elements as the large end face, and the end face with fewer processing elements as the small end face. The large end face is processed first;

[0007] S3. Flip the material and place it on the first fixture for small end surface machining. The first fixture includes a first fixture body, a pressure plate, and pressure plate fixing screws. The first fixture body includes a first station, a second station, a third station, and a fourth station. The first station, the second station, the third station, and the fourth station are all provided with a first positioning screw hole. The first station and the second station are provided with a pressure plate and a pressure plate fixing screw. The coordinate system for the small end surface machining is established at the center of the first fixture body. In the X direction, the tool setter is used to align the plane C position, and then the offset is one tool setter radius value plus one dimension A1 value. In the Y direction, the tool setter is used to align the plane C1, and then the offset is one tool setter radius value plus one dimension A2 value. The Z direction coordinate is established on plane C2, and the machining coordinate system is determined in sequence.

[0008] S4. Place the material on the second fixture for fine processing. Fine processing here refers to the processing of independent curved surface structures, that is, the processing of the part that requires tool replacement. The second fixture includes a second fixture body and a second positioning screw hole. The X-direction of the processing coordinate system for the fine processing is input after the tool setter aligns the plane C4 position with the tool setter and then offsets it by a dimension F1; the Y-direction is input after the tool setter aligns the plane C3 with the tool setter and then offsets it by the tool setter radius value; the Z-direction coordinate is established on the large end surface, and the determination of the processing coordinate system is completed in sequence.

[0009] As a further improvement of the above technical solution:

[0010] The large end face dimensions D1, D2, D3 and D4 are in the same machining surface feature and are processed synchronously to ensure the consistency of dimensional position accuracy. A 0.1mm margin is reserved on one side of the outer dimensions E2 and E4.

[0011] The small end face processing includes processing outer dimensions E2 and E4.

[0012] The refinement process is used to process the cambered surface to a size of E6.

[0013] The first clamping body is provided with a first calibration base surface.

[0014] The second clamping body is provided with a second calibration base surface.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention is a process for processing multiple high-precision slider-type parts. During program editing, the same tool processing trajectory can be merged, reducing the number of tool changes and idle travel distance, thereby shortening the processing time of a single product and improving production efficiency. At the same time, the fixture has a simple structure and is easy to operate. Multiple products can be processed with one clamp, which can better ensure the dimensional accuracy and form and position tolerances of the parts, reduce manual labor intensity, and increase the part qualification rate by 100%. The fixture can be freely combined according to the size of the fixture blank, the size of the workpiece, and the production rhythm, and a multi-station design can be used to process multiple workpieces simultaneously, which will greatly improve the consistency of the part dimensional accuracy and positional accuracy, slow down tool wear, reduce tool consumption, and improve processing efficiency. The problem of low processing efficiency, low positioning accuracy, and complex operation of existing slider-type parts is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the schematic diagrams of the slider structure of the present invention;

[0018] Figure 2 This is the second schematic diagram of the slider structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the processing of the slider of the present invention;

[0020] Figure 4 This is a schematic diagram of the installation structure of the first clamp body of the present invention;

[0021] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0022] Figure 6 For the present invention Figure 5 Schematic diagram of the DD cross-section structure;

[0023] Figure 7 This is a schematic diagram of the positioning structure of the first clamp body of the present invention;

[0024] Figure 8 For the present invention Figure 7 Schematic diagram of EE cross-section structure;

[0025] Figure 9 This is a schematic diagram of the positioning structure of the second clamp body of the present invention;

[0026] Figure 10 For the present invention Figure 9 Middle JJ cross-sectional structure diagram;

[0027] Figure 11 This is a schematic diagram of the second clamping structure of the present invention.

[0028] Figure numerals: 1, pressure plate; 10, second clamping body; 11, second positioning screw hole; 12, second positioning screw; 13, second cylindrical pin; 2, pressure plate fixing screw; 7, first clamping body; 70, first positioning screw hole; 76, first positioning screw; 77, first cylindrical pin. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The processing technology of processing multiple high-precision slider parts in this embodiment is described from the following three aspects:

[0034] 1) Processing route arrangement:

[0035] 1-1. According to the part structure and technical requirements of the drawing, the key position accuracy benchmark is on the large end face of the part, and the large end face has a complex shape and many processing elements. Therefore, after completing the rough milling of the hexagon, directly clamp the part with a vise and process the large end face features of the part first. The large end face dimensions D1, D2, D3 and D4 are in the same processing surface features. The same process step can ensure the consistency of dimensional position accuracy. In addition to the 0.1mm margin reserved on one side of the external dimensions E2 and E4, the dimensions of other parts are processed in place according to the drawing requirements to complete the processing of the large end face features of the part. The schematic diagram of the part is as follows Figure 1 and Figure 2 As shown, Figure 3 Schematic diagram of parts processing.

[0036] 1-2. Processing of small end face of parts: The technical requirement is that the datum is D3, but there is a certain positional relationship between D3 and 4-D4, and both features are completed in the same process step on the large end face, with good consistency. In order to facilitate the fixture design, the datum is selected as the 4-D4 stepped hole. Figure 4 , the first step is to press the two sides of the parts with the pressing plate 1, such as Figure 4 The schematic diagram of the processed part is in state H. The processing position is the central structural part of the part. After the processing is completed, Figure 4 The schematic diagram of the processed part is in state I; the four small holes in the center of the rear part are fixed with the pressure plate and screws 2 to tighten the part, as shown in the figure. Figure 4 In the J state of the processing part diagram, remove the two side pressure plates and complete the processing on both sides, such as Figure 4 Schematic diagram of the processed part in K state; except for the arc surface dimension E6, the outer dimensions E2 and E4 and other dimensions are processed in place according to the drawing requirements, and the processing of the small end face features of the part is completed.

[0037] 1-3. Parts arc surface size E6 processing: see Figure 11 The parts are clamped on the workstation through the second clamping body 10, two parts are clamped at a time, and the processing can be completed efficiently by selecting a suitable large-diameter end mill according to the width of the arc surface.

[0038] 2) Special fixture design:

[0039] 2-1. Design a special fixture for the small end of the fine milling part - the first fixture: Figures 4 to 8 As shown, it consists of the following parts: first clamping body 7, pressure plate 1, pressure plate fixing screw 2, first set screw hole 70, and first set screw 76 (if the screw head interferes, it can be machined to the appropriate size by conventional lathe). Part H in the figure shows the center position of the part to be machined first, Part I shows the finished center position, Part J shows the clamping position of the pressure plates on both sides of the part to be machined, and Part K shows the finished small end.

[0040] The first clamp body 7 is integrally formed to ensure the consistency of dimensional position accuracy between each workstation. The first cylindrical pin 77 of each workstation on the first clamp body 7 and the step hole D4 of the part are matched with H7 / g6 to achieve precise orientation of the part and the fixture.

[0041] During operation, the first clamp body 7 is directly mounted on the milling machine workbench through screws, nuts and pressing plates. The clamping ensures that the plane C, plane C1 and plane C2 of the first clamp body 7 are aligned with the attached plane. Figure 3 The part is placed on the first clamping body 7, and the first cylindrical pin 77 of each workstation fixture on the first clamping body 7 is matched with the part hole 9 to achieve the reference orientation. Then the first positioning screw 76 fixes the part to the first clamping body 7, and the part clamping at each workstation is completed in sequence.

[0042] 2-2. Design a special fixture for fine milling the small end arc surface of the part - the second fixture: Figures 9 to 11 As shown, it consists of the following parts: a second clamping body 10, a second positioning screw 12, a second positioning screw hole 11, and a second cylindrical pin 13. The second clamping body 10 is formed by integral processing to ensure the consistency of the dimensional position accuracy between each workstation. Each second cylindrical pin 13 on the second clamping body 10 and the part step hole D4 adopt H7 / g6 matching, and realize the precise orientation of the part and the fixture. The plane C3, the lower end surface reference, and the plane C4 of the second clamping body 10 ensure that the attachment is achieved. Figure 9 and Figure 10 Dimensional position accuracy requirements.

[0043] During operation, the second clamping body 10 is directly mounted on the milling machine table using screws, nuts, and a pressure plate. The clamping ensures that the plane C3, the lower end face reference, and the plane C4 of the second clamping body 10 meet the installation accuracy requirements. The part is placed on the second clamping body 10. The second cylindrical pin 13 at each station on the second clamping body 10 mates with the stepped hole (4-D4) of the part and achieves precise orientation. The second positioning screw 12 then secures the part to the clamping body, completing the part clamping at each station in sequence.

[0044] 3) Determination of machining coordinate system for precision milling parts:

[0045] 3-1. Determination of the coordinate system for fine milling of the small end face

[0046] See attached Figure 7 , the part processing coordinate system is established at the center position of the first clamping base 7. In the X direction, the tool setter only needs to be offset by the tool setter radius value plus a dimension A1 value after aligning the plane C position. In the same principle, the tool setter in the Y direction only needs to be offset by the tool setter radius value plus a dimension A2 value after aligning the plane C1. The Z direction coordinate is established on the plane C2, and the determination of the processing coordinate system is completed in sequence.

[0047] 3-2. Determination of the coordinate system for machining the small end arc surface of fine milling parts

[0048] See attached Figure 9 , the X direction of the part processing coordinate system only needs to be offset by a dimension F1 after the tool setter is aligned in the plane C4 position, and the same principle is used. After the tool setter is aligned in the Y direction, it can be offset by a tool setter radius value and input. The Z direction coordinate is established on the upper end face of the part, and the determination of the processing coordinate system is completed in sequence.

[0049] Using this processing method, the same tool processing trajectory can be merged during program editing, reducing the number of tool changes and idle travel distance, thereby shortening the processing time of a single product and improving production efficiency. At the same time, the fixture has a simple structure and is easy to operate. It can process multiple products with one clamping, which can better ensure the dimensional accuracy and form and position tolerance of parts, reduce manual labor intensity, and increase the part qualification rate by 100%.

[0050] This processing method takes the processing of 4 parts as an example but is not limited to 4 parts. It can be freely combined according to the size of the fixture blank, the size of the workpiece and the production rhythm. It adopts a multi-station design to process multiple workpieces simultaneously, which will greatly improve the consistency of part size accuracy and position accuracy, slow down tool wear, reduce tool consumption and improve processing efficiency.

[0051] The above is only an embodiment of the present invention, and common sense such as the specific structure and characteristics of the scheme are not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claim involved.

Claims

1. A processing technology for processing multiple high-precision slider parts, characterized in that: The following steps are involved: S1, rough milling the material to obtain block material; S2. According to the processing requirements, define the end face with more processing elements as the large end face, and the end face with fewer processing elements as the small end face. The large end face is processed first; S3, turn the material over and place it on the first fixture for small end surface processing; the first fixture includes a first fixture body (7), a pressure plate (1), and a pressure plate fixing screw (2); the first fixture body (7) includes a first station H, a second station I, a third station J, and a fourth station K; the first station H, the second station I, the third station J, and the fourth station K are all provided with a first positioning screw hole (70); the first station H and the second station I are provided with a pressure plate (1) and a pressure plate fixing screw (2); the first fixture body (7) ) is formed by integral processing, and the first cylindrical pin (11) of each station on the first clamp body (7) is matched with the step hole D4 of the part by H7 / g6; the coordinate system for the small end surface processing is established at the center position of the first clamp body (7), and the X direction is offset by a tool setting instrument radius value plus a dimension A1 value after aligning the plane C position with the tool setting instrument; the Y direction is offset by a tool setting instrument radius value plus a dimension A2 value after aligning the plane C1 with the tool setting instrument; the Z direction coordinate is established on the plane C2, and the determination of the processing coordinate system is completed in sequence; S4. Place the material on the second fixture for fine processing. The second fixture includes a second fixture body (10), a second positioning screw hole (11), a second positioning screw (12) and a second cylindrical pin (13). The second fixture body (10) is formed by integral processing. Each second cylindrical pin (13) on the second fixture body (10) is matched with the step hole D4 of the part by H7 / g6. The X direction of the fine processing processing coordinate system is input after being offset by a dimension F1 after being aligned with the plane C4 position by the tool setting instrument; the Y direction is input after being offset by a tool setting instrument radius value after being aligned with the plane C3 by the tool setting instrument; the Z direction coordinate is established on the large end face, and the determination of the processing coordinate system is completed in sequence.

2. The process for processing multiple high-precision slider parts according to claim 1, characterized in that: The large end face dimensions D1, D2, D3 and D4 are in the same machining surface feature and are processed synchronously to ensure the consistency of dimensional position accuracy. A 0.1mm margin is reserved on one side of the outer dimensions E2 and E4.

3. The process for processing multiple high-precision slider parts according to claim 2, characterized in that: The small end face processing includes processing outer dimensions E2 and E4.

4. The process for processing multiple high-precision slider parts according to claim 3, characterized in that: The refinement process is used to process the cambered surface to a size of E6.

5. The process for processing multiple high-precision slider parts according to claim 4, characterized in that: A first calibration base surface is provided on the first clamp body (7).

6. The process for processing multiple high-precision slider parts according to claim 5, characterized in that: A second calibration base surface is provided on the second clamp body (10).

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