Positioning device for machining special-shaped pipe parts and adjustable positioning assembly

Abstract

A positioning device for special-shaped pipe part machining comprises a second V-shaped block and an adjustable positioning assembly which are arranged at the two ends of a bottom plate respectively, and the adjustable positioning assembly comprises a first V-shaped block, two supporting rods used for supporting the first V-shaped block and two left-right adjusting devices; each supporting rod is of a stepped cylinder structure composed of a small cylinder and a large cylinder connected to the lower portion of the small cylinder, and external threads are arranged at the lower end of the small cylinder and the lower end of the large cylinder. The lower ends of the large cylinders of the two supporting rods are arranged in corresponding threaded holes in the bottom plate; the bottoms of the two ends of the first V-shaped block extend outwards to form horizontal supporting plates, and horse holes for avoiding the small cylinders are formed in the horizontal supporting plates. After the small cylinders of the two supporting rods penetrate through the galloping holes in the two ends of the V-shaped block I, fixing nuts are mounted at the end parts; the two left-right adjusting devices are arranged at the two ends of the first V-shaped block respectively. The error in the part clamping process is compensated through the adjustable V-shaped block and the positioning device, so that the part can be accurately positioned in the clamping process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the positioning device of frock clamp, specifically is a kind of positioning device and adjustable positioning assembly for special-shaped pipe class part machining. BACKGROUND

[0002] V-shaped block positioning is often used in mechanical clamp design, especially for pipe class parts with rotary body shape. According to the need of use performance, some pipe class parts are designed as the combination of multi-segment rotary body. In clamp design, the axis of the two selected cylindrical bodies for positioning of these pipe class parts is sometimes not coaxial, the axis of the two cylindrical bodies has distance in horizontal and height direction, and some even have angle. In addition, there is a certain deviation between the blank of these parts and the theoretical size of the design drawing. Therefore, the two V-shaped blocks for positioning cannot be designed and fixed according to the theoretical position size of the parts in clamp design. The two V-shaped blocks produced due to the manufacturing error and the actual error of the part blank are superimposed, and the part cannot be correctly positioned and clamped, or the function elements of the processed part deviate. SUMMARY

[0003] The utility model aims at solving the deficiency of prior art, and provides a positioning device for special-shaped pipe class part machining. The error in the clamping process of the part is compensated by adjustable V-shaped block and positioning device, so that the part can be accurately positioned in the clamping process.

[0004] The utility model also aims at providing an adjustable positioning assembly.

[0005] A positioning device for special-shaped pipe class part machining comprises:

[0006] A bottom plate;

[0007] A V-shaped block two for supporting the part and an adjustable positioning assembly, wherein the V-shaped block two and the adjustable positioning assembly are arranged on the two ends of the bottom plate;

[0008] The adjustable positioning assembly comprises a V-shaped block one, two supporting rods for supporting the V-shaped block one and two left-right adjusting devices for adjusting the left-right position of the V-shaped block one;

[0009] Each supporting rod is a stepped cylindrical structure composed of a small cylinder and a large cylinder connected below the small cylinder, and the lower end of the small cylinder and the large cylinder is provided with external threads;

[0010] The lower end of the large cylinder of the two supporting rods is installed in the corresponding threaded hole of the bottom plate;

[0011] The horizontal support plate on the two ends of the V-shaped block extends outward, and the horizontal support plate is provided with a walk-through hole for the small cylinder to pass through;

[0012] The two left-right adjusting devices are arranged on the two ends of the V-shaped block.

[0013] The left-right adjusting device comprises a positioning rod, the lower end of the positioning rod is fixed in the threaded hole on the bottom plate, the upper end of the positioning rod is provided with a horizontal positioning rod threaded hole, and the positioning rod threaded hole is provided with a positioning bolt which can abut against the side surface of the V-shaped block.

[0014] The positioning bolt is provided with a positioning nut two, and the positioning nut two is located between the positioning rod and the V-shaped block.

[0015] The lower end of the positioning rod and the lower end of the support rod are provided with a positioning nut one.

[0016] The small cylinder and the large cylinder are connected to form a stepped surface, and when the small cylinders of the two support rods pass through the walk-through hole on the two ends of the V-shaped block, the bottom of the V-shaped block is in contact with the stepped surface.

[0017] The upper end of the V-shaped block one and the upper end of the V-shaped block two are provided with a concave V-shaped opening groove.

[0018] The adjustable positioning assembly comprises a V-shaped block one, two support rods for supporting the V-shaped block one, and two left-right adjusting devices for adjusting the left-right position of the V-shaped block one.

[0019] Each of the support rods is a stepped cylindrical structure composed of a small cylinder and a large cylinder connected below the small cylinder, and the lower end of the small cylinder and the lower end of the large cylinder are provided with external threads.

[0020] The lower end of the large cylinder of the two support rods is arranged in the corresponding threaded hole on the bottom plate;

[0021] The horizontal support plate on the two ends of the V-shaped block extends outward, and the horizontal support plate is provided with a walk-through hole for the small cylinder to pass through; the small cylinders of the two support rods pass through the walk-through hole on the two ends of the V-shaped block, and the end part is provided with a fixing nut;

[0022] The two left-right adjusting devices are arranged on the two ends of the V-shaped block.

[0023] The left-right adjusting device comprises a positioning rod, the lower end of the positioning rod is fixed in the threaded hole on the bottom plate, the upper end of the positioning rod is provided with a horizontal positioning rod threaded hole, and the positioning rod threaded hole is provided with a positioning bolt which can abut against the side surface of the V-shaped block.

[0024] The positioning bolt is provided with a positioning nut two, and the positioning nut two is located between the positioning rod and the V-shaped block.

[0025] The lower end of the positioning rod and the supporting rod is equipped with a positioning nut.

[0026] The connecting position of the small cylinder and the large cylinder is formed with a stepped surface, and when the small cylinder of the two supporting rods passes through the horse hole at the two ends of the V-shaped block, the bottom of the V-shaped block is in contact with the stepped surface.

[0027] The utility model discloses to the situation of this kind of positioning, first fixed one V-shaped block on the fixture, and the other V-shaped block is made into adjustable V-shaped block device at the selected positioning position of the part, and the V-shaped block is fixed after adjusting according to the actual shape size of the part blank when processing, so that the above-mentioned problem is solved well. The utility model has the advantages of simple structure, low cost and easy popularization.

[0028] The utility model has the advantages that the V-shaped block can compensate the positioning error of the part when the product is clamped. In actual production, it is inevitable to produce error when making the fixture, and in addition to the actual error of the part blank, the part often cannot be correctly positioned and clamped. The utility model compensates the error in the clamping process of the part through the adjustable V-shaped block and the positioning device, so that the part can be accurately positioned in the clamping process. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the structural schematic diagram of the utility model;

[0030] Figure 2 It is the plan view of Figure 1

[0031] Figure 3 It is the structural schematic diagram of the V-shaped block 1 of the utility model;

[0032] Figure 4 It is the plan view of Figure 3

[0033] Figure 5 It is the structural schematic diagram of the positioning rod of the utility model;

[0034] Figure 6 It is the plan view of the positioning rod of the utility model;

[0035] Figure 7 It is the structural schematic diagram of the supporting rod of the utility model;

[0036] Figure 8 It is the plan view of the supporting rod of the utility model;

[0037] ​​In the figure: 1, bottom plate, 2, positioning nut one, 3, positioning rod, 4, positioning bolt, 5, positioning nut two, 6, fixed nut, 7, support rod, 8, V-shaped block one, 9, part, 10, V-shaped block one side, 12, V-shaped open slot, 13, horse hole, 14, positioning rod threaded hole, 15, external thread, 16, small cylinder, 17, large cylinder upper end face, 18, large cylinder, 19, V-shaped block two. DETAILED DESCRIPTION

[0038] Figure 1 、 Figure 2 In the figure: 1, bottom plate, 2, positioning nut one, 3, positioning rod, 4, positioning bolt, 5, positioning nut two, 6, fixed nut, 7, support rod, 8, V-shaped block one, 9, part, 10, V-shaped block one side, 12, V-shaped open slot, 13, horse hole, 14, positioning rod threaded hole, 15, external thread, 16, small cylinder, 17, large cylinder upper end face, 18, large cylinder, 19, V-shaped block two.

[0039] Figure 3 、 Figure 4 In the figure: 1, bottom plate, 2, positioning nut one, 3, positioning rod, 4, positioning bolt, 5, positioning nut two, 6, fixed nut, 7, support rod, 8, V-shaped block one, 9, part, 10, V-shaped block one side, 12, V-shaped open slot, 13, horse hole, 14, positioning rod threaded hole, 15, external thread, 16, small cylinder, 17, large cylinder upper end face, 18, large cylinder, 19, V-shaped block two.

[0040] Figure 5 、 Figure 6 In the figure: 1, bottom plate, 2, positioning nut one, 3, positioning rod, 4, positioning bolt, 5, positioning nut two, 6, fixed nut, 7, support rod, 8, V-shaped block one, 9, part, 10, V-shaped block one side, 12, V-shaped open slot, 13, horse hole, 14, positioning rod threaded hole, 15, external thread, 16, small cylinder, 17, large cylinder upper end face, 18, large cylinder, 19, V-shaped block two.

[0041] Figure 7 、 Figure 8In the embodiment, the support rod 7 is a stepped cylinder structure composed of a small cylinder 16 and a large cylinder 18 connected below the small cylinder, and the small cylinder 16 and the large cylinder 18 are both provided with external threads at the lower ends, and a stepped surface 17 is formed at the connection between the small cylinder 16 and the large cylinder 18.

[0042] In use, one end of the pipe 9 is pressed and fixed on the V-shaped block two 19, which is connected and fixed with the bottom plate 1. The other end of the pipe is in contact with the V-shaped opening slot 12 of the V-shaped block one 8. The two support rods 7 are threadedly connected with the bottom plate 1 and fixed by the positioning nut one 2, and the small cylinders 16 above the two support rods 7 respectively pass through the horse holes 13 on the left and right sides of the V-shaped block one 8. By adjusting the assembly height of the two support rods 7 with the bottom plate 1, the V-shaped block one 8 supported on the support rods 7 can be moved in the vertical direction, so as to compensate for the error in the vertical direction. Two positioning rods 3 are arranged on the two sides of the V-shaped block one 8 and threadedly connected with the bottom plate 1 and fixed by the positioning nut one 2. The positioning rods 3 are in contact with the side surface 10 of the V-shaped block one 8 through the positioning bolt 4 and the positioning nut two 5, so as to adjust and position the V-shaped block one 8 in the horizontal direction, thereby compensating for the error in the horizontal direction. After adjustment, the V-shaped block one 8 is pressed on the stepped surface 17 by the fixing nut 6, so as to position the V-shaped block one 8 in the vertical direction.

Claims

1. A positioning device for machining irregularly shaped tubular parts, characterized in that: include: Base plate (1); The V-shaped block 2 (19) and the adjustable positioning component are used to support the part (9), and the V-shaped block 2 (19) and the adjustable positioning component are respectively disposed on the two ends of the base plate (1); The adjustable positioning component includes a V-block (8), two support rods (7) for supporting the V-block (8), and two left and right adjustment devices for adjusting the left and right positions of the V-block (8). Each of the support rods (7) is a stepped cylindrical structure consisting of a small cylinder (16) and a large cylinder (18) connected below the small cylinder. The lower ends of the small cylinder (16) and the large cylinder (18) are provided with external threads. The lower ends of the large cylindrical bodies (18) of the two support rods (7) are installed in the corresponding threaded holes on the base plate (1); The bottom of both ends of the V-shaped block (8) extends outward with horizontal support plates, and the horizontal support plates have walkway holes (13) for small cylinders (16); the small cylinders (16) of the two support rods (7) pass through the walkway holes (13) at both ends of the V-shaped block (8) and are fitted with fixing nuts (6). The two left and right adjustment devices are respectively located at the two ends of the V-shaped block (8).

2. The positioning device for machining irregularly shaped tubular parts according to claim 1, characterized in that: The left and right adjustment device includes a positioning rod (3), the lower end of which is fixed in a threaded hole on the base plate (1), and the upper end of the positioning rod (3) has a horizontal positioning rod threaded hole (14), and a positioning bolt (4) is installed in the positioning rod threaded hole (14) that can abut against one side (10) of the V-shaped block.

3. The positioning device for machining irregularly shaped tubular parts according to claim 2, characterized in that: The positioning bolt (4) is equipped with a positioning nut (5), which is located between the positioning rod (3) and the V-block (8).

4. A positioning device for machining irregularly shaped tubular parts according to any one of claims 1-3, characterized in that: The lower ends of the positioning rod (3) and the support rod (7) are each equipped with a positioning nut (2).

5. A positioning device for machining irregularly shaped tubular parts according to claim 1, characterized in that: A stepped surface (17) is formed at the connection between the small cylinder (16) and the large cylinder (18). When the small cylinder (16) of the two support rods (7) passes through the running holes (13) at both ends of the V-shaped block (8), the bottom of the V-shaped block (8) contacts the stepped surface (17).

6. The positioning device for machining irregularly shaped tubular parts according to claim 1, characterized in that: Both V-block 1 (8) and V-block 2 (19) have a recessed V-shaped opening groove (12) at the middle of their upper ends.

7. An adjustable positioning component, characterized in that: It includes a V-block (8), two support rods (7) for supporting the V-block (8), and two left and right adjustment devices for adjusting the left and right positions of the V-block (8); Each of the support rods (7) is a stepped cylindrical structure consisting of a small cylinder (16) and a large cylinder (18) connected below the small cylinder. The lower ends of the small cylinder (16) and the large cylinder (18) are provided with external threads. The lower ends of the large cylindrical bodies (18) of the two support rods (7) are installed in the corresponding threaded holes on the base plate (1); The bottom of both ends of the V-shaped block (8) extends outward with horizontal support plates, and the horizontal support plates have walkway holes (13) for small cylinders (16); the small cylinders (16) of the two support rods (7) pass through the walkway holes (13) at both ends of the V-shaped block (8) and are fitted with fixing nuts (6). The two left and right adjustment devices are respectively located on the two ends of the V-block (8); the left and right adjustment devices include positioning rods (3), the lower end of the positioning rods (3) is fixed in the threaded hole on the base plate (1), the upper end of the positioning rods (3) has a horizontal positioning rod threaded hole (14), and the positioning rod threaded hole (14) is equipped with a positioning bolt (4) that can abut against the side (10) of the V-block.

8. An adjustable positioning component according to claim 7, characterized in that: The positioning bolt (4) is equipped with a positioning nut (5), which is located between the positioning rod (3) and the V-block (8).

9. An adjustable positioning component according to claim 7, characterized in that: The lower ends of the positioning rod (3) and the support rod (7) are each equipped with a positioning nut (2).

10. An adjustable positioning component according to claim 7, characterized in that: A stepped surface (17) is formed at the connection between the small cylinder (16) and the large cylinder (18). When the small cylinder (16) of the two support rods (7) passes through the running holes (13) at both ends of the V-shaped block (8), the bottom of the V-shaped block (8) contacts the stepped surface (17).

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