A positioning device for machining shaft-type workpieces

Abstract

This application relates to the field of shaft workpiece processing technology, and in particular to a positioning device for shaft workpiece processing. The device includes a base and a connecting frame mounted on the base. The connecting frame is equipped with a rotating block, a driving component for driving the rotating block to rotate, and a three-jaw chuck for fixing one end of the shaft workpiece. The base is equipped with a lifting support structure for supporting the other end of the shaft workpiece. The rotating block is rotatably connected to the connecting frame via a rotating shaft, and the three-jaw chuck is rotatably connected to the rotating block. Four lifting support structures are provided, arranged in pairs opposite each other. The four lifting support structures jointly support the end of the shaft workpiece. The driving component drives the rotating block to rotate the three-jaw chuck, allowing the shaft workpiece to be angled according to processing requirements. Simultaneously, the lifting support structures adjust the height of the supporting shaft workpiece as needed, ensuring stable support and positioning at both ends of the shaft workpiece during the process of drilling oblique holes, thereby maintaining a fixed position.

Description

Technical Field

[0001] This application relates to the field of shaft workpiece machining technology, and in particular to a positioning device for shaft workpiece machining. Background Technology

[0002] The production process of flow meters usually involves machining shaft-type workpieces, such as grinding and drilling.

[0003] In the existing technology, when drilling holes in shaft-type workpieces, the pipe is usually fixed by a three-jaw chuck structure, and then the worker uses hand-held grinding or drilling equipment to process the outer wall of the pipe.

[0004] In actual use, one end of the shaft workpiece is fixed by a three-jaw chuck, and the other end is attached to the support. When it is necessary to perform oblique drilling on the shaft workpiece, since the drilling equipment is usually set vertically, it is difficult for the operator to accurately control the position and angle of the drilling, resulting in drilling position deviation, which needs to be improved. Utility Model Content

[0005] To ensure that shaft-type workpieces remain in a fixed position during the drilling of angled holes, this application provides a positioning device for machining shaft-type workpieces.

[0006] This application provides a positioning device for machining shaft-type workpieces, which adopts the following technical solution:

[0007] A positioning device for machining shaft-type workpieces includes a base and a connecting frame mounted on the base. The connecting frame is provided with a rotating block, a driving component for driving the rotating block to rotate, and a three-jaw chuck for fixing one end of the shaft-type workpiece. The base is provided with a lifting support structure for supporting the other end of the shaft-type workpiece. The rotating block is rotatably connected to the connecting frame via a rotating shaft, and the three-jaw chuck is rotatably connected to the rotating block. Four lifting support structures are provided and arranged in pairs opposite to each other, and the four lifting support structures together support the end of the shaft-type workpiece.

[0008] By adopting the above technical solution, a three-jaw chuck is used to fix one end of the shaft-like workpiece, and four lifting support structures arranged in pairs support the other end of the shaft-like workpiece. The drive component drives the rotating block to rotate the three-jaw chuck, so that the shaft-like workpiece can be angled according to processing requirements. At the same time, the lifting support structure can adjust the height of the support for the shaft-like workpiece according to actual needs, ensuring that both ends of the shaft-like workpiece have stable support and positioning during the process of drilling oblique holes, thereby maintaining a fixed position and improving processing accuracy and stability.

[0009] Preferably, the drive assembly includes a first arc plate, a connecting arc plate, a locking bolt, and a locking nut. There are two first arc plates, both of which are located on the side of the rotating block away from the three-jaw chuck. Each first arc plate is fixed to the connecting arc plate. Each first arc plate has a first arc hole. Limiting holes are symmetrically provided on the connecting frame. The locking bolts are positioned and numbered according to the limiting holes. Each locking bolt passes through the first arc hole and the limiting hole in sequence and is locked by the locking nut.

[0010] By adopting the above technical solution, the first arc-shaped hole on the first arc plate cooperates with the limiting hole on the connecting frame, and is locked by locking bolts and locking nuts. This structure allows the rotating block to rotate and adjust within a certain angle range, thereby driving the three-jaw chuck to rotate to adjust the clamping angle of the shaft workpiece. When the rotating block is adjusted to a suitable machining angle, the rotating block is fixed by locking bolts and nuts, realizing the angle positioning of the shaft workpiece. This facilitates machining operations such as oblique drilling on the shaft workpiece, and ensures the stability of the workpiece angle during machining, thereby improving machining accuracy.

[0011] Preferably, the drive assembly includes a second arc-shaped plate, a drive rod, a fixed disk, a rotating connecting rod, and a handwheel for driving the drive rod to rotate. Two second arc-shaped plates are provided, and both second arc-shaped plates are located on the side of the rotating block opposite to the three-jaw chuck. The fixed disk and the handwheel are coaxially fixed to the drive rod. Each second arc-shaped plate is provided with a second arc-shaped hole. The drive rod passes through the two second arc-shaped holes in sequence and is rotatably connected to the connecting frame. One end of the rotating connecting rod is rotatably connected to the rotating block, and the other end is rotatably connected to the fixed disk.

[0012] By adopting the above technical solution, the operator rotates the handwheel to drive the drive rod to rotate. The drive rod passes through the second arc-shaped holes on the two second arc-shaped plates and is rotatably connected to the connecting frame. At the same time, it drives the fixed plate to rotate. The rotating connecting rod transmits the rotation of the fixed plate to the rotating block. The rotating block drives the three-jaw chuck to rotate, thereby adjusting the clamping angle of the shaft workpiece. This structure is easy to operate and can accurately control the rotation angle of the rotating block, thereby realizing precise angle adjustment of the shaft workpiece. This facilitates the processing of shaft workpieces at various angles and improves the flexibility and accuracy of processing.

[0013] Preferably, the base includes a first base body, a second base body, and a telescopic plate. One side of the telescopic plate is fixed to the second base body, and the other side of the telescopic plate slides and extends inside the first base body. The connecting frame is disposed on the first base body, and any of the lifting support structures is disposed on the second base body.

[0014] By adopting the above technical solution, the telescopic plate can be extended and slid inside the first base body, so that the overall length of the base can be adjusted according to the length of the shaft-type workpiece.

[0015] Preferably, the first base is provided with a second connecting hole and a first bolt, the telescopic plate is provided with a sliding hole, and multiple sliding holes are provided. The first bolt passes through the second connecting hole and forms a threaded connection with the sliding hole.

[0016] By adopting the above technical solution, the first bolt passes through the second connecting hole and forms a threaded connection with the sliding hole, which can accurately lock the telescopic position of the telescopic plate, ensuring that the base length will not change during the processing and guaranteeing the stability of the positioning of shaft workpieces; at the same time, by selecting different sliding holes to cooperate with the first bolt, the base length can be adjusted in multiple stages to meet the processing requirements of shaft workpieces of different lengths.

[0017] Preferably, any of the aforementioned lifting support structures includes a connecting seat, a lifting seat that slides telescopically on the connecting seat, rollers for supporting shaft-like workpieces, and a second bolt for limiting the sliding movement of the lifting seat, wherein the rollers are rotatably connected to the top of the lifting seat.

[0018] By adopting the above technical solution, the four rollers provide initial support for the shaft-type workpiece. At the same time, the rollers reduce the friction between the shaft-type workpiece and the lifting seat, avoiding damage to the workpiece surface, and facilitate the rotation of the workpiece during processing, ensuring reliable positioning of the workpiece during processing. The lifting seat slides and extends on the connecting seat and is limited by the second bolt, so that the lifting seat can flexibly adjust the height of the rollers according to the size of the shaft-type workpiece and the clamping angle, so as to support shaft-type workpieces of different specifications and placement angles.

[0019] Preferably, the connecting seat is provided with a first connecting hole, the lifting seat is provided with a lifting hole, and a plurality of lifting holes are provided at intervals. The second bolt passes through the first connecting hole and forms a threaded connection with the lifting hole.

[0020] By adopting the above technical solution, the first connecting hole on the connecting seat and several lifting holes spaced apart on the lifting seat are used in conjunction with the second bolt, so that the height adjustment of the lifting seat has more selectable levels and can achieve more precise height adjustment.

[0021] Preferably, the base is provided with a slide rail, and there are two slide rails. Any two connecting seats can slide on the same slide rail, and any one of the connecting seats can slide on the slide rail and be tightened and limited by bolts to the base.

[0022] By adopting the above technical solution, the two slide rails on the base allow the two connecting seats to slide on the same slide rail, and the connecting seats and the base are tightened and limited by bolts. This design facilitates the adjustment of the spacing between the lifting support structures to support different positions of shaft-type workpieces.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. A three-jaw chuck is used to fix one end of a shaft-like workpiece, and four lifting support structures arranged in pairs support the other end of the shaft-like workpiece. The drive component drives the rotating block to rotate the three-jaw chuck, so that the angle of the shaft-like workpiece can be adjusted according to the processing requirements. At the same time, the lifting support structure can adjust the height of the support for the shaft-like workpiece according to the actual needs, ensuring that both ends of the shaft-like workpiece have stable support and positioning during the process of drilling oblique holes, thereby maintaining a fixed position and improving processing accuracy and stability.

[0025] 2. By utilizing the first arc-shaped hole on the first arc plate to engage with the limiting hole on the connecting frame and locking it with locking bolts and locking nuts, this structure allows the rotating block to rotate and adjust within a certain angle range. This rotating block drives the three-jaw chuck to rotate, thereby adjusting the clamping angle of the shaft workpiece. When the rotating block is adjusted to the appropriate machining angle, it is fixed by locking bolts and nuts, realizing the angle positioning of the shaft workpiece. This facilitates machining operations such as oblique drilling on the shaft workpiece and ensures the stability of the workpiece angle during machining, thus improving machining accuracy.

[0026] 3. The operator rotates the handwheel to drive the drive rod, which passes through the second arc-shaped holes on the two second arc-shaped plates and is rotatably connected to the connecting frame. At the same time, it drives the fixed plate to rotate. The rotating connecting rod transmits the rotation of the fixed plate to the rotating block, which drives the three-jaw chuck to rotate, thereby adjusting the clamping angle of the shaft workpiece. This structure is easy to operate and can precisely control the rotation angle of the rotating block, thereby achieving precise angle adjustment of the shaft workpiece. This facilitates the processing of shaft workpieces at various angles and improves the flexibility and accuracy of processing. Attached Figure Description

[0027] Figure 1 This is an isometric schematic diagram of the main overall structure in Embodiment 1 of this application;

[0028] Figure 2 This is a schematic diagram illustrating the overall structure supporting the inclined shaft-type workpiece in Embodiment 1 of this application.

[0029] Figure 3 This is a structural schematic diagram illustrating the main cooperative relationship between the rotating block, the three-jaw chuck, and the drive assembly in Embodiment 1 of this application;

[0030] Figure 4 This is a schematic diagram of the main lifting support structure in Embodiment 1 of this application;

[0031] Figure 5 This is a schematic diagram of the main structure of the driving component in Embodiment 1 of this application;

[0032] Figure 6 This is a schematic diagram illustrating the main cooperative relationship between the rotating block, the three-jaw chuck, and the drive assembly in Embodiment 2 of this application.

[0033] Figure 7 This is a schematic diagram of the main driving component in Embodiment 2 of this application.

[0034] Reference numerals: 1. Base; 11. First seat; 111. First telescopic groove; 112. Second connecting hole; 113. First bolt; 12. Second seat; 121. Slide rail; 13. Telescopic plate; 131. Sliding hole; 2. Connecting frame; 21. Limiting hole; 3. Rotating block; 4. Drive assembly; 41. First arc plate; 411. First arc hole; 42. Connecting arc plate; 43. Locking bolt; 44. Locking nut; 45. Second arc plate; 451. Second arc hole; 46. Drive rod; 47. Fixed plate; 48. Rotating connecting rod; 49. Handwheel; 5. Three-jaw chuck; 6. Lifting support structure; 61. Connecting seat; 611. Second telescopic groove; 612. First connecting hole; 62. Lifting seat; 621. Lifting hole; 63. Roller; 64. Second bolt. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail.

[0036] This application discloses a positioning device for machining shaft-type workpieces.

[0037] Example 1:

[0038] Reference Figure 1 and Figure 2 A positioning device for machining shaft-type workpieces includes a base 1 and a connecting frame 2. The base 1 is composed of a first seat body 11, a second seat body 12 and a telescopic plate 13. A first telescopic groove 111 is provided on the first seat body 11. One side of the telescopic plate 13 is integrally formed on the second seat body 12, and the other side of the telescopic plate 13 slides and extends within the first telescopic groove 111 of the first seat body 11, so that the overall length of the base 1 can be adjusted according to the length of the shaft-type workpiece.

[0039] Reference Figure 2 and Figure 3The connecting frame 2 is fixed to the first base 11 by bolts. The connecting frame 2 is provided with a rotating block 3, a drive assembly 4 and a three-jaw chuck 5. The rotating block 3 is rotatably connected to the connecting frame 2 by a rotating shaft, and the axis of the rotating shaft is set horizontally. The three-jaw chuck 5 is rotatably connected to the rotating block 3 by rotational damping. The drive assembly 4 is used to drive the rotating block 3 to rotate, thereby driving the three-jaw chuck 5 to rotate, so that the shaft workpiece can be angled according to the processing requirements.

[0040] Reference Figure 1 and Figure 2 The first base 11 is provided with a second connecting hole 112 and a first bolt 113, and the telescopic plate 13 is provided with a sliding hole 131. There are multiple sliding holes 131. In this embodiment, three sliding holes 131 are equally spaced. When in use, the first bolt 113 passes through the second connecting hole 112 and forms a threaded connection with any sliding hole 131, thereby precisely locking the telescopic position of the telescopic plate 13 and realizing the adjustment of the distance between the first base 11 and the second base 12. When processing long or short shaft workpieces, the base 1 can provide stable support and positioning.

[0041] Reference Figure 2 and Figure 4 The second seat 12 is provided with a lifting support structure 6 for supporting shaft-type workpieces. There are four lifting support structures 6 arranged in pairs opposite each other. The four lifting support structures 6 form a common support space for supporting shaft-type workpieces. In use, one end of the shaft-type workpiece is clamped and fixed by a three-jaw chuck 5, and the other end of the shaft-type workpiece is attached to the lifting support structure 6. At the same time, the lifting support structure 6 can adjust the height of supporting the shaft-type workpiece according to actual needs.

[0042] Reference Figure 2 and Figure 4 Two opposing lifting support structures 6 are set as a group, that is, two sets of lifting support structures 6 are set in the front and back on the second base 12. When the shaft workpiece is tilted, the two sets of lifting support structures 6 are in a support state of one high and one low, which is suitable for stable support of the shaft workpiece.

[0043] Reference Figure 2 and Figure 4 Since the four lifting support structures 6 have the same structure and connection method, we will now take one of the lifting support structures 6 as an example for explanation. The lifting support structure 6 includes a connecting seat 61, a lifting seat 62, a roller 63 and a second bolt 64. The connecting seat 61 has an upward-facing second telescopic groove 611. The lifting seat 62 slides up and down in the second telescopic groove 611 of the connecting seat 61. The roller 63 is rotatably connected to the top of the lifting seat 62 through a bearing. The four rollers 63 jointly support the end of the shaft workpiece, and when the shaft workpiece rotates, the rollers 63 will not cause wear on the side wall of the shaft workpiece.

[0044] Reference Figure 2 and Figure 4 The second base 12 is equipped with a slide rail 121. There are two slide rails 121. Two connecting seats 61 slide on either slide rail 121. Each connecting seat 61 slides on the slide rail 121 and is tightened and limited by bolts to the base 1. This design allows for easy adjustment of the spacing between the connecting seats 61 to support different positions of shaft-type workpieces. It also allows workers to quickly adjust the position of the connecting seats 61 according to the actual processing situation, thereby improving processing efficiency.

[0045] Reference Figure 2 and Figure 4 The connecting seat 61 is provided with a first connecting hole 612, and the lifting seat 62 is provided with a lifting hole 621. Several lifting holes 621 are provided at intervals. In this embodiment, three lifting holes 621 are provided at equal intervals. In use, the second bolt 64 passes through the first connecting hole 612 and forms a threaded connection with any of the lifting holes 621, thereby realizing the height locking of the connecting seat 61 and the lifting seat 62, meeting the different requirements of different shaft workpieces for support height, ensuring that different specifications of shaft workpieces can obtain a suitable support height during processing, and ensuring processing accuracy.

[0046] Reference Figure 3 and Figure 5 The drive assembly 4 includes a first arc plate 41, a connecting arc plate 42, a locking bolt 43, and a locking nut 44. There are two first arc plates 41, which are symmetrically welded to the side of the rotating block 3 away from the three-jaw chuck 5. Each first arc plate 41 is symmetrically welded to the connecting arc plate 42, and the arc surface of each first arc plate 41 is in contact with the arc surface of the connecting arc plate 42. Thus, the connecting arc plate 42 not only enhances the connection strength of the two first arc plates 41, but also ensures that the two first arc plates 41 can rotate simultaneously.

[0047] Reference Figure 3 and Figure 5 A first arc-shaped plate 41 is provided with a first arc-shaped hole 411. Limiting holes 21 are symmetrically provided on both sides of the connecting frame 2. The locking bolts 43 are set in the position and number corresponding to the limiting holes 21. Any locking bolt 43 passes through the first arc-shaped hole 411 and the limiting hole 21 in sequence and is locked by the locking nut 44.

[0048] Reference Figure 2 and Figure 5This structure allows the rotating block 3 to rotate and adjust within a certain angle range, thereby driving the three-jaw chuck 5 to rotate and adjust the clamping angle of the shaft workpiece. After the rotating block 3 is adjusted to the appropriate machining angle, the rotating block 3 is fixed by the locking bolt 43 and the locking nut 44 to realize the angle positioning of the shaft workpiece, which facilitates the machining operations such as oblique drilling of the shaft workpiece, and can ensure the stability of the workpiece angle during the machining process and improve the machining accuracy.

[0049] The implementation principle of this application embodiment is as follows: In actual operation, the operator loosens the first bolt 113, slides the telescopic plate 13 to the appropriate length of the shaft workpiece, and then locks it with the first bolt 113. Then, one end of the shaft workpiece is fixed with the three-jaw chuck 5, and the other end of the shaft workpiece is attached to the four rollers 63, and the four rollers 63 abut against the side wall of the shaft workpiece.

[0050] Next, loosen the locking nut 44, push the rotating block 3 to rotate to the target angle, and retighten the locking nut 44 on the locking bolt 43 so that the locking nut 44 abuts against the side wall of the connecting frame 2, thereby fixing the position of the rotating block 3. Then, by independently adjusting the height of each lifting seat 62, the shaft workpiece is stably attached to the roller 63. Finally, start the drilling machine to drill holes in the inclined shaft workpiece.

[0051] Example 2

[0052] The difference between Example 2 and Example 1 is that:

[0053] Reference Figure 6 and Figure 7 The drive assembly 4 includes a second arc-shaped plate 45, a drive rod 46, a fixed plate 47, a rotating connecting rod 48, and a handwheel 49 for driving the drive rod 46 to rotate. There are two second arc-shaped plates 45, which are symmetrically welded to the side of the rotating block 3 away from the three-jaw chuck 5. The fixed plate 47 and the handwheel 49 are coaxially fixed to the drive rod 46. A second arc-shaped hole 451 is provided on either of the second arc-shaped plates 45. The drive rod 46 passes through the two second arc-shaped holes 451 in sequence and is rotatably connected to the connecting frame 2. Rotational damping is provided at the rotational connection between the drive rod 46 and the connecting frame 2. The fixed plate 47 is located between the two second arc-shaped plates 45. One end of the rotating connecting rod 48 is rotatably connected to the rotating block 3 through a rotating shaft, and the other end is eccentrically glued to the fixed plate 47 through a rotating shaft.

[0054] Reference Figure 2 and Figure 7In use, the operator rotates the handwheel 49 to drive the drive rod 46 to rotate. The drive rod 46 passes through the second arc-shaped holes 451 on the two second arc-shaped plates 45 and is rotatably connected to the connecting frame 2. At the same time, it drives the fixed plate 47 to rotate. The rotating connecting rod 48 transmits the rotation of the fixed plate 47 to the rotating block 3. The rotating block 3 drives the three-jaw chuck 5 to rotate to adjust the clamping angle of the shaft workpiece, thereby achieving precise angle adjustment of the shaft workpiece.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A positioning device for machining shaft-type workpieces, characterized in that: The device includes a base (1) and a connecting frame (2) mounted on the base (1). The connecting frame (2) is provided with a rotating block (3), a driving component (4) for driving the rotating block (3) to rotate, and a three-jaw chuck (5) for fixing one end of the shaft-like workpiece. The base (1) is provided with a lifting support structure (6) for supporting the other end of the shaft-like workpiece. The rotating block (3) is rotatably connected to the connecting frame (2) via a rotating shaft. The three-jaw chuck (5) is rotatably connected to the rotating block (3). There are four lifting support structures (6) arranged in pairs opposite each other. The four lifting support structures (6) together support the end of the shaft-like workpiece.

2. The positioning device for machining shaft-type workpieces according to claim 1, characterized in that: The drive assembly (4) includes a first arc plate (41), a connecting arc plate (42), a locking bolt (43), and a locking nut (44). There are two first arc plates (41), both of which are located on the side of the rotating block (3) away from the three-jaw chuck (5). Each first arc plate (41) is fixed on the connecting arc plate (42). Each first arc plate (41) has a first arc hole (411). The connecting frame (2) has symmetrically arranged limit holes (21). The locking bolt (43) is set in the position and number corresponding to the limit holes (21). Each locking bolt (43) passes through the first arc hole (411) and the limit hole (21) in sequence and is locked by the locking nut (44).

3. The positioning device for machining shaft-type workpieces according to claim 1, characterized in that: The drive assembly (4) includes a second arc plate (45), a drive rod (46), a fixed plate (47), a rotating connecting rod (48), and a handwheel (49) for driving the drive rod (46) to rotate. There are two second arc plates (45), and both second arc plates (45) are located on the side of the rotating block (3) away from the three-jaw chuck (5). The fixed plate (47) and the handwheel (49) are coaxially fixed with the drive rod (46). A second arc hole (451) is provided on any of the second arc plates (45). The drive rod (46) passes through the two second arc holes (451) in sequence and is rotatably connected to the connecting frame (2). One end of the rotating connecting rod (48) is rotatably connected to the rotating block (3), and the other end is rotatably connected to the fixed plate (47).

4. A positioning device for machining shaft-type workpieces according to claim 1, characterized in that: The base (1) includes a first seat body (11), a second seat body (12) and a telescopic plate (13). One side of the telescopic plate (13) is fixed on the second seat body (12), and the other side of the telescopic plate (13) slides inside the first seat body (11). The connecting frame (2) is set on the first seat body (11), and any of the lifting support structures (6) is set on the second seat body (12).

5. A positioning device for machining shaft-type workpieces according to claim 4, characterized in that: The first base (11) is provided with a second connecting hole (112) and a first bolt (113), and the telescopic plate (13) is provided with a sliding hole (131). There are multiple sliding holes (131). The first bolt (113) passes through the second connecting hole (112) and forms a threaded connection with the sliding hole (131).

6. A positioning device for machining shaft-type workpieces according to claim 1, characterized in that: Any of the lifting support structures (6) includes a connecting seat (61), a lifting seat (62) that slides telescopically on the connecting seat (61), a roller (63) for supporting shaft-like workpieces, and a second bolt (64) for limiting the sliding of the lifting seat (62), wherein the roller (63) is rotatably connected to the top of the lifting seat (62).

7. A positioning device for machining shaft-type workpieces according to claim 6, characterized in that: The connecting seat (61) is provided with a first connecting hole (612), and the lifting seat (62) is provided with a lifting hole (621). The lifting holes (621) are spaced apart. The second bolt (64) passes through the first connecting hole (612) and forms a threaded connection with the lifting hole (621).

8. A positioning device for machining shaft-type workpieces according to claim 6, characterized in that: The base (1) is provided with a slide rail (121), and there are two slide rails (121). Any two connecting seats (61) slide on the same slide rail (121). Any connecting seat (61) slides on the slide rail (121) and is tightened and limited by bolts to the base (1).

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