Positioning device of precision automatic lathe

Abstract

The utility model is suitable for the technical field of precision automatic lathe, and provides a precision automatic lathe positioning device which comprises a base assembly, a positioning assembly is arranged on the top of the base assembly, a plurality of sets of fixing pins are arranged on the top of the positioning assembly, and a top cover assembly is arranged on the top of the positioning assembly. The base assembly comprises a base plate, four sets of butt joint positioning pins are arranged at the bottom end of the base plate, four sets of top plate fixing pin holes are formed in the top end of the base plate, and a plurality of sets of sliding grooves are formed in the top end of the base plate. The positioning assembly comprises a positioning disc, and the top of the positioning disc is slidably connected with a plurality of sets of positioning blocks. The device solves the problems that the operation difficulty is large, operation errors are caused, and the machining precision and efficiency are affected, and the functions that operation is easy, the working efficiency is improved, the cost is reduced, and the device is suitable for machining circular tube type workpieces of various diameters are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of Swiss-type lathes, and more particularly to a positioning device for Swiss-type lathes. Background Art

[0002] Swiss-type lathes, also known as CNC Swiss-type lathes, are high-precision CNC machine tools primarily used for machining long shaft parts. Swiss-type lathes are widely used, and workpiece positioning is essential to ensure machining accuracy and quality. The workpiece must be accurately positioned on the machine tool to ensure positional accuracy during machining and avoid degradation of workpiece precision due to accumulated errors.

[0003] Currently, Swiss-type lathes typically use appropriate positioning devices, such as chucks, collets, and positioning blocks, to ensure accurate positioning of the workpiece during machining. However, the design and operation of positioning devices are complex, requiring precise adjustment and calibration. This not only increases operational difficulty but can also lead to operational errors, impacting machining accuracy and efficiency. Furthermore, these devices must be selected based on the shape and size of the workpiece, making operation cumbersome and reducing work efficiency. Furthermore, high-precision fixtures and positioning devices are typically expensive, increasing production costs for manufacturers. Cost pressures are particularly high when these devices are used extensively. Therefore, a Swiss-type lathe positioning device is proposed to address the positioning issues faced by circular tubular workpieces of varying diameters prior to machining. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a Swiss lathe positioning device that is simple to operate, improves work efficiency, reduces costs, and is suitable for processing circular tube workpieces of various diameters.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A positioning device for a Swiss-type lathe comprises a base assembly, a positioning assembly is provided on the top of the base assembly, a plurality of sets of fixing pins are provided on the top of the positioning assembly, and a top cover assembly is provided on the top of the positioning assembly; the base assembly comprises a chassis, four sets of docking positioning pins are provided at the bottom end of the chassis, four sets of top plate fixing pin holes are provided at the top of the chassis, and a plurality of sets of sliding grooves are provided at the top of the chassis; the positioning assembly comprises a positioning plate, and a plurality of positioning blocks are slidably connected to the top of the positioning plate.

[0007] The utility model is further configured as follows: a circular base positioning hole is opened through the center of the chassis, multiple groups of sliding grooves are opened around the center of the base positioning hole, an opening limit column is set on one side of the chassis, and a retraction limit column is set on the same side of the opening limit column.

[0008] By adopting the above technical solution, the positioning pins are aligned with the holes on the Swiss machine that match their shapes, confirming that the axis of the Swiss machine coincides with the center of the positioning device. The base positioning hole opened on the chassis can pass through the workpiece. The top plate fixing pin hole cooperates with the top cover assembly to limit the movement of the positioning assembly to avoid exceeding the limit and making it impossible to align with the workpiece. The sliding groove is set to a double-layer structure, with the upper layer size smaller than the lower layer size, which is convenient for the fixing pin to fix and limit the sliding trajectory. The maximum opening position of the positioning assembly is limited by opening the limit column, and the minimum retracted position is limited by retracting the limit column.

[0009] The utility model is further configured as follows: the positioning plate is slidably connected to the chassis, a circular positioning alignment hole is opened through the center of the positioning plate, the diameter of the positioning alignment hole is the same as the diameter of the base positioning hole, and multiple groups of sliding grooves are opened through the top of the positioning plate, and the multiple groups of sliding grooves are opened around the center of the positioning alignment hole.

[0010] The utility model is further configured as follows: a limiting handle is provided on one side of the positioning plate, a circular positioning pin hole is penetrated through the top of the positioning block, the fixing pin passes through the positioning pin hole and is fixedly connected to the positioning block, and the sliding groove and the sliding groove are slidably connected to the fixing pin.

[0011] By adopting the above technical solution, by toggling the limit handle, the positioning plate rotates relative to the chassis, and the fixed pin passes through the positioning pin hole, the sliding groove and the sliding groove, so that the positioning block on the positioning plate moves according to the opening trajectory of the sliding groove and the sliding groove, that is, multiple groups of positioning blocks slide toward the center of the positioning alignment hole at the same time, thereby realizing the function of the positioning device to align and position the workpiece.

[0012] The utility model is further configured as follows: the top cover assembly includes a top plate, a circular top plate observation hole is opened through the center of the top plate, four groups of top plate fixing pins are provided at the bottom end of the top plate, and the top plate fixing pins are adapted to the shape of the top plate fixing pin holes.

[0013] The utility model is further configured as follows: a plurality of sliding limit strips are provided at the bottom end of the top plate, the sliding limit strips are arranged around the center of the top plate observation hole, the sliding limit strips are adapted to the shape of the positioning block, and the positioning block is slidably connected to the sliding limit strips.

[0014] By adopting the above technical solution, the top plate fixing pin at the bottom of the top plate is fixed to the top plate fixing pin hole, so that the sliding limit bar limits the moving direction of the positioning block to prevent the positioning block from rotating when sliding. The staff can intuitively observe the sliding trajectory of the positioning block through the top plate observation hole.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. Align the positioning pins with the holes on the Swiss machine that match their shapes, confirm that the axis of the Swiss machine coincides with the center of the positioning device, and the base positioning hole opened on the chassis can pass through the workpiece. The top plate fixing pin hole and the top cover assembly cooperate to limit the movement of the positioning assembly to avoid exceeding the limit and making it impossible to align with the workpiece. The sliding groove is set to a double-layer structure, with the upper layer size smaller than the lower layer size, which is convenient for fixing the fixing pin and limiting the sliding trajectory. The maximum opening position of the positioning assembly is limited by opening the limit column, and the minimum retracted position is limited by retracting the limit column.

[0017] 2. By turning the limit handle, the positioning plate rotates relative to the chassis, and the fixed pin passes through the positioning pin hole, the sliding groove and the sliding groove, so that the positioning block on the positioning plate moves along the track of the sliding groove and the sliding groove, that is, multiple groups of positioning blocks slide toward the center of the positioning alignment hole at the same time, realizing the function of the positioning device to align and position the workpiece.

[0018] 3. Fix the top plate fixing pin at the bottom of the top plate to the top plate fixing pin hole, so that the sliding limit strip limits the moving direction of the positioning block to prevent the positioning block from rotating when sliding. The staff can visually observe the sliding trajectory of the positioning block through the top plate observation hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the positioning device of the Swiss-type lathe of the present invention.

[0020] Figure 2 This is an exploded schematic diagram of the positioning device of the Swiss-type lathe of the present invention.

[0021] Figure 3 This is a structural diagram of the base assembly of the utility model.

[0022] Figure 4 for Figure 3 Sectional view in the AA cutting direction.

[0023] Figure 5 This is a structural diagram of the positioning component of the utility model.

[0024] Figure 6 It is a structural schematic diagram of the top cover assembly of the utility model.

[0025] Explanation of reference numerals: 1, base assembly; 11, chassis; 12, docking positioning pin; 13, base positioning hole; 14, top plate fixing pin hole; 15, sliding groove; 16, expansion limit column; 17, retraction limit column;

[0026] 2. Positioning assembly; 21. Positioning plate; 22. Positioning alignment hole; 23. Slide groove; 24. Limiting handle; 25. Positioning block; 26. Positioning pin hole;

[0027] 3. Fixed pin;

[0028] 4. Top cover assembly; 41. Top plate; 42. Top plate observation hole; 43. Top plate fixing pin; 44. Sliding limit strip. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0031] For example 1, please refer to Figure 1-6 , the utility model provides the following technical solutions:

[0032] Specifically refers to a Swiss lathe positioning device, see Figure 1-2 , including a base assembly 1, the base assembly 1 is aligned with the Swiss lathe to determine the position of the central axis, a positioning assembly 2 is provided on the top of the base assembly 1, and the positioning assembly 2 is moved to align the center of the workpiece with the axis of the Swiss lathe, and multiple groups of fixing pins 3 are provided on the top of the positioning assembly 2, which pass through the positioning assembly 2 through the fixing pins 3 and are plugged into the base assembly 1, ensuring that in actual use, the positioning assembly 2 is fitted with the base assembly 1. A top cover assembly 4 is provided on the top of the positioning assembly 2, and the top cover assembly 4 limits the moving trajectory of the positioning assembly 2.

[0033] See Figure 3-4 The base assembly 1 includes a chassis 11, four groups of docking positioning pins 12 are provided at the bottom end of the chassis 11, a circular base positioning hole 13 is opened through the center of the chassis 11, four groups of top plate fixing pin holes 14 are opened at the top of the chassis 11, and multiple groups of sliding grooves 15 are opened at the top of the chassis 11. The multiple groups of sliding grooves 15 are opened around the center of the base positioning hole 13, an opening limit column 16 is provided on one side of the chassis 11, and a retraction limit column 17 is provided on the same side of the opening limit column 16 of the chassis 11. By docking the positioning pin 12 and aligning it with the hole on the Swiss machine that matches its shape, it is confirmed that the axis of the Swiss machine coincides with the center of the positioning device. The base positioning hole 13 opened on the chassis 11 can pass through the workpiece. The top plate fixing pin hole 14 cooperates with the top cover assembly 4 to limit the movement of the positioning assembly 2 to avoid exceeding the limit and making it impossible to align with the workpiece. The sliding groove 15 is set to a double-layer structure, the upper layer size of which is smaller than the lower layer size, which is convenient for the fixing pin 3 to fix and limit the sliding trajectory. The maximum opening position of the positioning assembly 2 is limited by opening the limit column 16, and the minimum retracted position is limited by retracting the limit column 17.

[0034] See Figure 5The positioning assembly 2 includes a positioning plate 21, which is slidably connected to the chassis 11. A circular positioning alignment hole 22 is formed through the center of the positioning plate 21. The diameter of the positioning alignment hole 22 is the same as the diameter of the base positioning hole 13. Multiple sets of sliding grooves 23 are formed through the top of the positioning plate 21, and the multiple sets of sliding grooves 23 are formed around the center of the positioning alignment hole 22. A limiting handle 24 is provided on one side of the positioning plate 21. Multiple sets of positioning blocks 25 are slidably connected to the top of the positioning plate 21. The top of the positioning block 25 has a circular positioning pin hole 26 formed through the top. The fixing pin 3 passes through the positioning pin hole 26 and is fixedly connected to the positioning block 25. The sliding groove 15 and the sliding groove 23 are slidably connected to the fixing pin 3.

[0035] Specifically, by toggling the limit handle 24, the positioning plate 21 rotates relative to the chassis 11, and the fixing pin 3 passes through the positioning pin hole 26, the sliding groove 23 and the sliding groove 15, so that the positioning block 25 on the positioning plate 21 moves along the opening trajectory of the sliding groove 23 and the sliding groove 15, that is, multiple groups of positioning blocks 25 slide toward the center of the positioning alignment hole 22 at the same time, realizing the function of the positioning device to align and position the workpiece.

[0036] See Figure 6 The top cover assembly 4 includes a top plate 41, with a circular top plate observation hole 42 extending through the center of the top plate 41. Four sets of top plate fixing pins 43 are provided at the bottom end of the top plate 41. The top plate fixing pins 43 match the shape of the top plate fixing pin holes 14. Multiple sets of sliding limit bars 44 are provided at the bottom end of the top plate 41. The sliding limit bars 44 are arranged around the center of the top plate observation hole 42. The sliding limit bars 44 match the shape of the positioning block 25, and the positioning block 25 is slidably connected to the sliding limit bars 44. The top plate fixing pins 43 at the bottom of the top plate 41 are inserted into the top plate fixing pin holes 14, so that the sliding limit bars 44 define the moving direction of the positioning block 25, preventing the positioning block 25 from rotating when sliding. Through the top plate observation hole 42, the staff can directly observe the sliding trajectory of the positioning block 25.

[0037] The working principle of the positioning device of a Swiss-type lathe provided by the utility model is as follows:

[0038] By toggling the limit handle 24, the positioning disk 21 rotates relative to the chassis 11, and the fixed pin 3 passes through the positioning pin hole 26, the sliding groove 23 and the sliding groove 15, so that the sliding limit bar 44 limits the moving direction of the positioning block 25, preventing the positioning block 25 from rotating when sliding, so that the positioning block 25 on the positioning disk 21 moves along the opening trajectory of the sliding groove 23 and the sliding groove 15, that is, multiple groups of positioning blocks 25 slide toward the center of the positioning alignment hole 22 at the same time, realizing the function of the positioning device to align and position the workpiece.

[0039] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

Claims

1. A positioning device for a Swiss-type lathe, characterized by: It comprises a base assembly (1), a positioning assembly (2) is provided on the top of the base assembly (1), a plurality of sets of fixing pins (3) are provided on the top of the positioning assembly (2), and a top cover assembly (4) is provided on the top of the positioning assembly (2); The base assembly (1) includes a chassis (11), the bottom end of the chassis (11) is provided with four groups of docking positioning pins (12), the top end of the chassis (11) is provided with four groups of top plate fixing pin holes (14), and the top end of the chassis (11) is provided with multiple groups of sliding grooves (15); The positioning assembly (2) comprises a positioning plate (21), and a plurality of positioning blocks (25) are slidably connected to the top of the positioning plate (21).

2. A Swiss-type lathe positioning device according to claim 1, characterized in that: A circular base positioning hole (13) is provided through the center of the chassis (11), and a plurality of groups of sliding grooves (15) are provided around the center of the base positioning hole (13). An opening limit column (16) is provided on one side of the chassis (11), and a retraction limit column (17) is provided on the same side of the opening limit column (16) as the chassis (11).

3. The positioning device for a Swiss-type lathe according to claim 2, characterized in that: The positioning plate (21) is slidably connected to the chassis (11); a circular positioning alignment hole (22) is provided through the center of the positioning plate (21); the diameter of the positioning alignment hole (22) is the same as the diameter of the base positioning hole (13); a plurality of groups of sliding grooves (23) are provided through the top of the positioning plate (21); and the plurality of groups of sliding grooves (23) are provided around the center of the positioning alignment hole (22).

4. A positioning device for a Swiss-type lathe according to claim 3, characterized in that: A limiting handle (24) is provided on one side of the positioning plate (21); a circular positioning pin hole (26) is provided on the top of the positioning block (25); the fixing pin (3) passes through the positioning pin hole (26) and is fixedly connected to the positioning block (25); and the sliding groove (15) and the sliding groove (23) are slidably connected to the fixing pin (3).

5. The positioning device for a Swiss-type lathe according to claim 1, characterized in that: The top cover assembly (4) includes a top plate (41), a circular top plate observation hole (42) is opened through the center of the top plate (41), and four groups of top plate fixing pins (43) are provided at the bottom end of the top plate (41), and the top plate fixing pins (43) are adapted in shape to the top plate fixing pin holes (14).

6. The positioning device for a Swiss-type lathe according to claim 5, characterized in that: The bottom end of the top plate (41) is provided with a plurality of groups of sliding limit strips (44), the sliding limit strips (44) are arranged around the center of the top plate observation hole (42), the sliding limit strips (44) are adapted to the shape of the positioning block (25), and the positioning block (25) is slidably connected to the sliding limit strips (44).

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