Auxiliary tool for precise measurement and positioning of large workpiece

Abstract

The utility model provides an auxiliary tool for precise measurement and positioning of a large-sized workpiece, which relates to the technical field of workpiece measurement and positioning and comprises a positioning bottom plate, a first base, a second base, a vertical seat and a positioning sleeve assembly, a fixing hole is arranged at the top of the positioning bottom plate, the first base and the second base are connected with the fixing hole through fixing bolts, a rotation hole is arranged on the vertical seat, and the positioning sleeve assembly is arranged in the rotation hole. A positioning sleeve assembly is arranged at one end of the rotating shaft, the positioning sleeve assembly is formed by concentrically arranging a plurality of sleeve bodies with different diameters, a fastening bolt is arranged at the top of the outermost sleeve body, and through holes matched with the fastening bolt in position are formed in the tops of the multiple sleeve bodies on the inner side; according to the utility model, the rotating shaft is arranged in the rotating hole, the positioning sleeve assembly is arranged at one end of the rotating shaft, and the large-scale shaft workpiece positioned and installed through the positioning sleeve assemblies on the first base and the second base can perform angle rotation, so that holes in multiple surfaces of the large-scale shaft workpiece can be measured through one-time positioning and installation; and the convenience is high, and repeated positioning and clamping are avoided.

Description

Technical Field

[0001] This utility model relates to the field of workpiece measurement and positioning technology, and in particular to an auxiliary tool for precision measurement and positioning of large workpieces. Background Technology

[0002] Precision measurement of workpieces is a core component in modern manufacturing, ensuring product quality, improving process accuracy, and achieving standardized production. This is especially true in high-tech fields such as aerospace, automotive manufacturing, semiconductors, and medical devices, where measurement accuracy directly impacts product performance and safety. The core objectives of precision measurement include: geometric dimensional accuracy (measuring parameters such as length, width, height, diameter, angles, roundness, and flatness); positional accuracy (measuring relative positional deviations between locating holes and assembly surfaces); and microscopic features (surface roughness (Ra value), texture direction, and microscopic defects).

[0003] When measuring the drilling accuracy of large shaft-type workpieces, since the drilling occurs on multiple surfaces, the workpiece needs to be re-clamped after the accuracy of the holes on one surface is measured. For large workpieces, repeated clamping and positioning is difficult, time-consuming, and labor-intensive. Therefore, this utility model proposes an auxiliary tool for precision measurement and positioning of large workpieces to overcome the shortcomings of existing technologies. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide an auxiliary tool for precision measurement and positioning of large workpieces. This tool features rotating holes on the top of both the first and second bases, with a rotating shaft installed within each hole. A positioning sleeve assembly is then installed at one end of the rotating shaft. Large shaft-like workpieces positioned and installed via the positioning sleeve assembly on the first and second bases can rotate at an angle. A single positioning and installation can measure holes on multiple surfaces of the large shaft-like workpiece, offering high convenience and avoiding repeated positioning and clamping.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A precision measurement and positioning auxiliary tool for large workpieces includes a positioning base plate, a first base, a second base, a stand, and a positioning sleeve assembly. The positioning base plate has a fixing hole on its top, and there are multiple fixing holes. The first base and the second base are both connected to the fixing holes by fixing bolts. The first base and the second base are both provided with a stand on their tops. The stand has a rotating hole, and a rotating shaft is rotatably installed in the rotating hole. One end of the rotating shaft is provided with a positioning sleeve assembly.

[0007] The positioning sleeve assembly is composed of multiple sleeves of different diameters arranged concentrically. Adjacent sleeves are detachable and installable. The top of the outermost sleeve is provided with a fastening bolt, and the tops of the inner sleeves are provided with through holes that match the positions of the fastening bolts.

[0008] A further improvement is that: a driven gear is provided at one end of the rotating shaft on the upright of the first base, a drive motor is provided at the top of the first base, and a drive gear is provided at the output end of the drive motor, and the drive gear meshes with the driven gear.

[0009] A further improvement is that: an external threaded connector is provided on one side of the inner side of the sleeve, and an internal threaded connector is provided on the outer wall of one end of the sleeve. Adjacent sleeves are connected and fixed by the internal threaded connector and the external threaded connector.

[0010] A further improvement is that the outermost set of sleeves is fixedly installed to one end of the rotating shaft via an internal threaded connector.

[0011] A further improvement is that: one end of the inner sleeve extends out to the other end of the outer sleeve, and anti-slip textures are provided on the outer wall of the multiple sets of inner sleeve ends.

[0012] A further improvement is that: auxiliary fixing blocks are provided on both sides of one end of the first base and the second base, and auxiliary bolts are provided on the auxiliary fixing blocks, which are connected to the fixing holes.

[0013] The beneficial effects of this utility model are as follows: This utility model provides rotating holes on the uprights at the top of the first base and the second base, and sets a rotating shaft in the rotating holes. Then, a positioning sleeve assembly is set at one end of the rotating shaft. The large shaft workpieces that are positioned and installed by the positioning sleeve assembly on the first base and the second base can rotate at an angle. One positioning and installation can realize the measurement of holes on multiple surfaces of the large shaft workpiece, which is highly convenient and avoids repeated positioning and clamping.

[0014] The positioning sleeve assembly of this utility model consists of multiple sleeves of different diameters arranged concentrically, and adjacent sleeves can be detached and installed, enabling the positioning sleeve assembly to position large shaft workpieces of different diameters, with high adaptability. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 This is a three-dimensional schematic diagram of the first base structure of this utility model;

[0017] Figure 3 This is a three-dimensional schematic diagram of the second base structure of this utility model;

[0018] Figure 4 This is a schematic diagram showing the disassembled positioning sleeve assembly of this utility model;

[0019] Figure 5 This is a schematic diagram illustrating the working principle of the present invention.

[0020] The components are as follows: 1. Positioning base plate; 2. First base; 3. Second base; 4. Stand; 5. Positioning sleeve assembly; 501. Sleeve body; 502. External threaded connecting seat; 503. Internal threaded connecting seat; 6. Fixing hole; 7. Fixing bolt; 8. Rotary shaft; 9. Fastening bolt; 10. Through hole; 11. Driven gear; 12. Drive motor; 13. Drive gear; 14. Auxiliary fixing block; 15. Auxiliary bolt. Detailed Implementation

[0021] To deepen the understanding of this utility model, the following detailed description of the utility model will be provided in conjunction with the embodiments. These embodiments are only used to explain the utility model and do not constitute a limitation on the scope of protection of the utility model.

[0022] Example 1

[0023] according to Figure 1-5 As shown in the figure, this embodiment proposes a precision measurement and positioning auxiliary tool for large workpieces, including a positioning base plate 1, a first base 2, a second base 3, a stand 4, and a positioning sleeve assembly 5. The positioning base plate 1 has a fixing hole 6 on its top, and there are multiple fixing holes 6. The first base 2 and the second base 3 are both connected to the fixing holes 6 by fixing bolts 7. The first base 2 and the second base 3 are both provided with a stand 4 on their tops. The stand 4 is provided with a rotating hole, and a rotating shaft 8 is rotatably provided in the rotating hole. The positioning sleeve assembly 5 is provided at one end of the rotating shaft 8. The positioning sleeve assembly 5 is composed of multiple sleeves 501 of different diameters arranged concentrically. Adjacent sleeves 501 can be detachably installed. The top of the outermost sleeve 501 is provided with a fastening bolt 9, and the tops of the multiple inner sleeves 501 are provided with through holes 10 that are adapted to the position of the fastening bolt 9.

[0024] When using this utility model of a precision measurement and positioning auxiliary tool for large workpieces, firstly, select a sleeve 501 of appropriate size according to the diameter of the shaft workpiece to position both ends. If the size of the sleeve 501 is not suitable, it can be removed. After the two ends of the shaft workpiece are inserted into the sleeve 501, they are locked by fastening bolts 9 through the through hole 10. Then, the first base 2 and the second base 3 are connected to the fixing hole 6 on the positioning base plate 1 by fixing bolts 7.

[0025] One end of the rotary shaft 8 on the support 4 of the first base 2 is provided with a driven gear 11, and the top of the first base 2 is provided with a drive motor 12. The output end of the drive motor 12 is provided with a driving gear 13, which meshes with the driven gear 11. After the hole measurement on one working surface of the shaft-like workpiece in this utility model is completed, the drive motor 12 is started to drive the drive gear 13 to drive the rotary shaft 8 with the driven gear 11 to rotate. Due to the connection of the shaft-like workpiece, the rotary shaft 8 on the second base 3 rotates synchronously.

[0026] Example 2

[0027] according to Figure 1-5 As shown in the figure, this embodiment proposes a precision measurement and positioning auxiliary tool for large workpieces, including a positioning base plate 1, a first base 2, a second base 3, a stand 4, and a positioning sleeve assembly 5. The positioning base plate 1 has a fixing hole 6 on its top, and there are multiple fixing holes 6. The first base 2 and the second base 3 are both connected to the fixing holes 6 by fixing bolts 7. The first base 2 and the second base 3 are both provided with a stand 4 on their tops. The stand 4 is provided with a rotating hole, and a rotating shaft 8 is rotatably provided in the rotating hole. The positioning sleeve assembly 5 is provided at one end of the rotating shaft 8. The positioning sleeve assembly 5 is composed of multiple sleeves 501 of different diameters arranged concentrically. Adjacent sleeves 501 can be detachably installed. The top of the outermost sleeve 501 is provided with a fastening bolt 9, and the tops of the multiple inner sleeves 501 are provided with through holes 10 that are adapted to the position of the fastening bolt 9.

[0028] The sleeve 501 has an external threaded connector 502 on one side inside, and an internal threaded connector 503 on the outer wall of one end of the sleeve 501. Adjacent sleeves 501 are connected and fixed by the internal threaded connector 503 and the external threaded connector 502. The outermost set of sleeves 501 is threadedly fixed to one end of the rotary shaft 8 by the internal threaded connector 503. When installing the positioning sleeve assembly 5 of this utility model, firstly, the outermost sleeve 501 is threadedly fixed to one end of the rotary shaft 8 by the internal threaded connector 503 at one end. Then, a suitable sleeve 501 is selected according to the diameter of the workpiece. Any excess sleeves 501 can be disassembled by separating the internal threaded connector 503 at one end from the external threaded connector 502 of the outer sleeve 501.

[0029] One end of the inner sleeve 501 extends outward from one end of the outer sleeve 501, and the outer wall of one end of each of the multiple inner sleeves 501 is provided with anti-slip texture. The anti-slip texture facilitates the rotation and disassembly of the inner sleeve 501 by hand.

[0030] Both ends of the first base 2 and the second base 3 are provided with auxiliary fixing blocks 14, and auxiliary fixing blocks 14 are provided with auxiliary bolts 15, which are connected to fixing holes 6. By setting auxiliary fixing blocks 14 and auxiliary bolts 15, the installation stability of the first base 2 and the second base 3 on the positioning base plate 1 can be further improved.

[0031] The beneficial effects of this utility model are as follows: This utility model provides rotating holes on the uprights 4 at the top of both the first base 2 and the second base 3, and a rotating shaft 8 is installed within the rotating holes. A positioning sleeve assembly 5 is then installed at one end of the rotating shaft 8. Large shaft-like workpieces positioned and installed on the first base 2 and the second base 3 via the positioning sleeve assembly 5 can rotate at an angle. A single positioning installation can measure holes on multiple surfaces of the large shaft-like workpiece, offering high convenience and avoiding repeated positioning and clamping. The positioning sleeve assembly 5 of this utility model consists of multiple sleeves 501 of different diameters arranged concentrically, and adjacent sleeves 501 can be detachably installed, enabling the positioning sleeve assembly 5 to position large shaft-like workpieces of different diameters, resulting in high adaptability.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A precision measurement and positioning auxiliary tool for large workpieces, characterized in that: The system includes a positioning base plate (1), a first base (2), a second base (3), a stand (4), and a positioning sleeve assembly (5). The positioning base plate (1) has a fixing hole (6) at its top. The fixing hole (6) has multiple holes. The first base (2) and the second base (3) are connected to the fixing hole (6) by fixing bolts (7). The first base (2) and the second base (3) are both provided with a stand (4) at their top. The stand (4) has a rotating hole. A rotating shaft (8) is rotatably installed in the rotating hole. The positioning sleeve assembly (5) is provided at one end of the rotating shaft (8). The positioning sleeve assembly (5) is composed of multiple sleeves (501) of different diameters arranged concentrically. The adjacent sleeves (501) can be detachably installed. The top of the outermost sleeve (501) is provided with a fastening bolt (9), and the top of the multiple inner sleeves (501) is provided with through holes (10) that are adapted to the position of the fastening bolt (9).

2. The auxiliary tool for precision measurement and positioning of large workpieces according to claim 1, characterized in that: One end of the rotating shaft (8) on the stand (4) of the first base (2) is provided with a driven gear (11), and the top of the first base (2) is provided with a drive motor (12). The output end of the drive motor (12) is provided with a driving gear (13), and the driving gear (13) meshes with the driven gear (11).

3. The auxiliary tool for precision measurement and positioning of large workpieces according to claim 1, characterized in that: The sleeve (501) has an external threaded connector (502) on one side inside, and an internal threaded connector (503) on the outer wall of one end of the sleeve (501). Adjacent sleeves (501) are connected and fixed to each other by the internal threaded connector (503) and the external threaded connector (502).

4. The auxiliary tool for precision measurement and positioning of large workpieces according to claim 3, characterized in that: The outermost set of sleeves (501) is fixedly installed to one end of the rotating shaft (8) by an internal threaded connector (503).

5. The auxiliary tool for precision measurement and positioning of large workpieces according to claim 1, characterized in that: One end of the inner sleeve (501) extends out of the other end of the outer sleeve (501), and anti-slip textures are provided on the outer wall of one end of multiple sets of inner sleeves (501).

6. The auxiliary tool for precision measurement and positioning of large workpieces according to claim 1, characterized in that: Auxiliary fixing blocks (14) are provided on both sides of one end of the first base (2) and the second base (3). The auxiliary fixing blocks (14) are provided with auxiliary bolts (15), and the auxiliary bolts (15) are connected to the fixing holes (6).

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