Machine tool stroke expansion tool

Abstract

The utility model provides a machine tool stroke expanding tool, and belongs to the technical field of machinery. A machine tool stroke expanding tool comprises a base, at least two parallel guide rails are fixed to the base, at least two sliding blocks are arranged on each guide rail in a sliding mode, and an air cylinder is fixed to each sliding block; the supporting plate is fixed to a piston rod of the air cylinder, the air cylinder can drive the supporting plate to ascend and descend, and at least one positioning sleeve is fixed to the lower portion of the supporting plate; the positioning columns are fixed to the base, the multiple positioning columns are arranged at intervals in the length direction of the base, and the positioning columns can be sleeved with the positioning sleeves so as to limit sliding of the supporting plate. According to the machining tool, the two supporting components are fixed to the base, the upper surfaces of the supporting components serve as supporting faces, and the supporting faces can abut against the supporting plate to make contact with the supporting plate.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology, and in particular to a machine tool travel extension tooling. Background Technology

[0002] In gantry milling, when the workpiece is too long and the machine tool stroke is insufficient, it is necessary to readjust the positioning and fix it. This not only easily causes errors after the second clamping, but also makes the operation more complicated. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a machine tool travel extension fixture. This fixture extends the machine tool travel, thereby enabling the processing of parts beyond the maximum travel of the machine tool.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A machine tool travel extension fixture, comprising:

[0006] A base, on which at least two parallel guide rails are fixed, and at least two sliders are slidably arranged on each guide rail, and a cylinder is fixed on each slider;

[0007] A support plate is fixed on the piston rod of the cylinder, and the cylinder can drive the support plate to rise and fall. At least one positioning sleeve is fixed to the lower part of the support plate.

[0008] A plurality of positioning posts are fixed on the base and are spaced apart along the length of the base. The positioning sleeve can be fitted onto the positioning posts to restrict the sliding of the support plate.

[0009] In the above-mentioned processing fixture, two support components are fixed on the base, and the upper surface of the support component serves as a support surface, which can abut against the support plate.

[0010] In the above-mentioned processing fixture, the support component is arranged along the length direction of the support plate and is located at the two side edges of the support plate.

[0011] In the above-mentioned processing fixture, a number of support columns are fixed on the base, the upper end of the support column can abut against the support plate, and the support column is located between two support components.

[0012] In the above-mentioned machining fixture, the upper end of the positioning column has a frustum-shaped positioning part, and the positioning sleeve has a receiving hole adapted to the positioning part, and the side wall of the receiving hole is inclined.

[0013] In the above-mentioned machining fixture, at least one positioning structure is fixed on the support plate.

[0014] In the above-mentioned processing fixture, the support plate includes a bearing plate and a connecting plate. The connecting plate is located below the bearing plate and is smaller than the bearing plate. Two limiting posts are fixed on the base, and the two limiting posts are respectively located on both sides of the connecting plate to limit the movement range of the connecting plate.

[0015] In the above-mentioned processing fixture, a reinforcing block is fixed on the connecting plate, and the reinforcing block corresponds to the limiting post and can abut against the limiting post.

[0016] Compared with the prior art, this application has the following advantages:

[0017] In this application, by fixing the workpiece onto the support plate once before processing, there is no need to disassemble and reposition it midway, thus avoiding dimensional and coaxiality errors caused by repeated clamping. Compared to replacing with a gantry milling machine with a longer stroke, it is only necessary to add this stroke extension tooling to the existing machine tool to realize the processing of ultra-long workpieces, saving expensive machine tool investment and modification costs. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram in this application;

[0019] Figure 2 This is a structural diagram of the support plate after it has been disassembled in this application;

[0020] Figure 3 This is a cross-sectional structural diagram in this application;

[0021] Figure 4 This is the structure of the support plate in this application;

[0022] In the picture,

[0023] 2. Base; 21. Guide rail; 22. Slider; 23. Cylinder; 24. Support component; 241. Support surface; 25. Support column; 26. Limiting column;

[0024] 3. Support plate; 31. Positioning sleeve; 311. Accommodating hole; 32. Bearing plate; 33. Connecting plate; 331. Reinforcing block; 34. Positioning structure;

[0025] 4. Positioning post; 41. Positioning part. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figures 1 to 4 As shown, a machine tool stroke extension fixture includes: a base 2, a support plate 3, and several positioning pins 4. At least two parallel guide rails 21 are fixed on the base 2, and at least two sliders 22 are slidably arranged on each guide rail 21. A cylinder 23 is fixed on each slider 22. The support plate 3 is fixed on the piston rod of the cylinder 23, and the cylinder 23 can drive the support plate 3 to rise and fall. At least one positioning sleeve 31 is fixed on the lower part of the support plate 3. The positioning pins 4 are fixed on the base 2, and several positioning pins 4 are spaced apart along the length direction of the base 2. The positioning sleeves 31 can be fitted onto the positioning pins 4 to restrict the sliding of the support plate 3.

[0028] In this application, the machine tool travel extension fixture is installed on the worktable of the gantry machine tool and used to install the extra-long workpiece on the support plate 3 for processing.

[0029] After the worktable moves to its maximum stroke, the piston rod can be extended by supplying air to the cylinder 23, which will drive the support plate 3 to rise along the direction of the cylinder 23. When the support plate 3 rises to the required height, the positioning sleeve 31 at its lower part disengages from the corresponding positioning post 4. The position of the support plate 3 can be manually adjusted. After it is adjusted to the preset position, the cylinder 23 resets, and the support plate 3 is repositioned under the joint constraint of the positioning post 4 and the positioning sleeve 31, thereby realizing the super-threading of the worktable stroke.

[0030] In this application, by fixing the workpiece onto the support plate 3 once before processing, there is no need to disassemble and reposition it midway, thus avoiding dimensional and coaxiality errors caused by repeated clamping. Compared to replacing with a gantry machine tool with a longer stroke, it is only necessary to add this stroke extension tooling to the existing machine tool to realize the processing of ultra-long workpieces, saving expensive machine tool investment and modification costs.

[0031] Specifically, two support components 24 are fixed on the base 2. The upper surface of the support component 24 serves as the support surface 241, which can abut against the support plate 3.

[0032] When cylinder 23 resets, support plate 3 automatically falls onto support component 24 without additional clamping, thus obtaining reliable static support, improving safety, and making the workpiece more stable and accurate during processing.

[0033] Specifically, the support component 24 is arranged along the length of the support plate 3 and is located at both sides of the support plate 3.

[0034] The support component 24 is arranged along the length of the support plate 3, which can provide uniform support throughout the entire range of the workpiece, avoiding local suspension or sagging caused by single-point support. The left and right sides of the support plate 3 are subjected to force at the same time, keeping the middle section relatively straight, ensuring that the rear end of the workpiece is subjected to force smoothly, and reducing vibration and shaking generated during processing.

[0035] Specifically, a number of support columns 25 are fixed on the base 2, the upper end of the support column 25 can abut against the support plate 3, and the support column 25 is located between two support components 24.

[0036] Specifically, the upper end of the positioning post 4 has a frustum-shaped positioning part 41, and the positioning sleeve 31 has a receiving hole 311 that is adapted to the positioning part 41. The side wall of the receiving hole 311 is inclined.

[0037] The frustum-shaped positioning part 41 and the receiving hole 311 on the inclined side wall form a conical fit. When the positioning sleeve 31 descends to the upper end of the positioning post 4, it can automatically guide the positioning part 41 to the center of the receiving hole 311, realize rapid self-positioning, and ensure the accuracy of the position each time.

[0038] In this application, the position of the positioning part 41 is fixed, and each movement can only move to the corresponding position of the positioning part 41, and then the positioning part 41 and the receiving hole 311 are precisely positioned. In terms of design, the support plate 3 can move a fixed stroke distance to the left or right, rather than moving freely.

[0039] Specifically, at least one positioning structure 34 is fixed on the support plate 3.

[0040] The positioning structure 34 is used to fix components such as fixtures, or directly for positioning workpieces.

[0041] Specifically, the support plate 3 includes a bearing plate 32 and a connecting plate 33. The connecting plate 33 is located below the bearing plate 32 and is smaller than the bearing plate 32. Two limiting posts 26 are fixed on the base 2. The two limiting posts 26 are respectively located on both sides of the connecting plate 33 to limit the movement range of the connecting plate 33.

[0042] Two limiting posts 26 are respectively set on both sides of the connecting plate 33 to form a clamping constraint, so that the connecting plate 33 can only slide slightly between the limiting posts 26 and cannot go out of the range. After the connecting plate 33 and the limiting posts 26 are abutted, the cylinder 23 can be reset at this time, so that the positioning sleeve 31 can be accurately fitted on the positioning post 4.

[0043] The bearing plate 32 is larger than the connecting plate 33. During the movement of the support plate 3, the bearing plate 32 shields the moving plate, making it safer to use.

[0044] Specifically, a reinforcing block 331 is fixed on the connecting plate 33. The reinforcing block 331 corresponds to the limiting post 26 and can abut against the limiting post 26.

[0045] The reinforcing block 331 has high hardness and will not deform after contacting the limiting post 26, thus ensuring accuracy after multiple uses.

[0046] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture, as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0047] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Meanwhile, the word "and / or" throughout the text means including three solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0048] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0049] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from this utility model or exceeding the scope defined by the appended claims.

Claims

1. A machine tool stroke extension tooling, characterized in that, include: The base (2) has at least two parallel guide rails (21) fixed on it, and at least two sliders (22) are slidably arranged on each guide rail (21), and a cylinder (23) is fixed on each slider (22). Support plate (3), the support plate (3) is fixed on the piston rod of the cylinder (23), the cylinder (23) can drive the support plate (3) to rise and fall, and at least one positioning sleeve (31) is fixed at the lower part of the support plate (3). A plurality of positioning posts (4) are fixed on the base (2) and the plurality of positioning posts (4) are spaced apart along the length of the base (2). The positioning sleeve (31) can be fitted on the positioning posts (4) to restrict the sliding of the support plate (3).

2. The machine tool stroke extension fixture according to claim 1, characterized in that, Two support components (24) are fixed on the base (2). The upper surface of the support component (24) serves as the support surface (241), and the support surface (241) can abut against the support plate (3).

3. The machine tool stroke extension fixture according to claim 2, characterized in that, The support component (24) is arranged along the length of the support plate (3) and is located at the two side edges of the support plate (3).

4. The machine tool stroke extension fixture according to claim 1, characterized in that, A number of support columns (25) are fixed on the base (2). The upper end of the support column (25) can abut against the support plate (3). The support column (25) is located between two support components (24).

5. The machine tool stroke extension fixture according to claim 1, characterized in that, The upper end of the positioning post (4) has a frustum-shaped positioning part (41), and the positioning sleeve (31) has a receiving hole (311) adapted to the positioning part (41), and the side wall of the receiving hole (311) is inclined.

6. The machine tool stroke extension fixture according to claim 1, characterized in that, At least one positioning structure (34) is fixed on the support plate (3).

7. The machine tool stroke extension fixture according to claim 1, characterized in that, The support plate (3) includes a bearing plate (32) and a connecting plate (33). The connecting plate (33) is located below the bearing plate (32) and is smaller than the bearing plate (32). Two limiting posts (26) are fixed on the base (2). The two limiting posts (26) are respectively located on both sides of the connecting plate (33) to limit the movement range of the connecting plate (33).

8. The machine tool stroke extension fixture according to claim 7, characterized in that, A reinforcing block (331) is fixed on the connecting plate (33). The reinforcing block (331) corresponds to the limiting post (26) and can abut against the limiting post (26).

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