Round fine positioning device with adjustable pre-positioning platform

Abstract

The utility model relates to a round fine positioning device with an adjustable pre-positioning platform. The round fine positioning device sequentially comprises a base, a base and a positioning column assembly from bottom to top. The cam rod is mounted in a cam cavity in the inner side of the base, and a dial mounting table for placing a dial is arranged at the top of the base; the positioning column assembly comprises a cap, a positioning column shell and a connecting rod, the top of the connecting rod located in the positioning column shell is locked with the cap above through a connecting rod locking bolt, and the bottom of the connecting rod penetrates through a center hole of the dial and then is locked with the cam rod below through a connecting rod locking bolt. The positioning column assembly can be finely adjusted, visual adjustment can be achieved, and use is convenient; after the positioning column assembly is adjusted, the positioning column assembly can be subjected to embracing and locking treatment through the embracing and locking bolt, and loosening and tightening are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field related to mechanical processing, in particular to a circular precision positioning device with an adjustable pre-positioning platform. Background Art

[0002] The door knocker is a part of the car body structure. At present, in the design process of the door knocker, the cost reduction and light weight are tried to be achieved while ensuring the strength and stiffness. The use of hot-formed steel can improve the strength of the parts while reducing the number and thickness of the parts. Therefore, hot-formed parts are increasingly used in car bodies. Welding is an important process step in hot forming, and the quality of welding directly affects the quality of the product. In the welding process of the door knocker plate, multiple positioning columns and other structures are required for pre-positioning.

[0003] After massive searches, it was found that the prior art publication number is CN219403007U, which discloses a kind of automobile door ring welding positioning tool, including a workbench and a tool base, a tool base is arranged in the middle position of the workbench, a plurality of door ring positioning cavities are arranged in the tool base, a plurality of door ring positioning cavities are connected end to end, a partition groove is arranged between adjacent door ring positioning cavities, a plurality of clamping mechanisms are arranged on the tool base outside the door ring positioning cavity, a lifting hole is arranged in the door ring positioning cavity, a lifting mechanism is arranged on the tool base directly below the lifting hole, and an adsorption mechanism is arranged in the door ring positioning cavity on one side of the lifting hole. When positioning the workpiece, the utility model directly places a plurality of workpieces in the door ring positioning cavity, the positioning process is relatively simple and accurate, and the clamping process is performed by the outer clamping mechanism; the bottom auxiliary clamping of the positioned workpiece can be facilitated by the adsorption mechanism, and the processed workpiece can be lifted by the lifting mechanism, which is convenient for material discharge.

[0004] In summary, the existing positioning tooling has the following problems:

[0005] The current style of positioning device cannot be fine-tuned after being fixed, and visual adjustment is not possible, which is extremely inconvenient to use.

[0006] In view of the above-mentioned defects, the designers have actively carried out research and innovation in order to create a pre-positioning platform adjustable circular precision positioning device to make it more valuable for industrial use. Utility Model Content

[0007] In order to solve the above technical problems, the purpose of the utility model is to provide a circular precision positioning device with an adjustable pre-positioning platform.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A circular precision positioning device with an adjustable pre-positioning platform, which comprises, from bottom to top, a base, a pedestal and a positioning column assembly;

[0010] The base is locked with the upper base by the base locking bolts, the cam rod is installed in the cam cavity inside the base, a dial mounting platform for placing the dial is arranged on the top of the base, the dial is provided with scales, a dial clamping groove is arranged on one side of the center hole of the dial, a cam rod positioning pin is arranged on the top of the cam rod just below the dial clamping groove, and the cam rod positioning pin is located in the dial clamping groove;

[0011] The positioning column assembly includes a cover cap, a positioning column housing and a connecting rod. The top of the connecting rod located in the positioning column housing is locked with the cover cap above by a connecting rod locking bolt, and the bottom of the connecting rod passes through the center hole of the dial and is locked with the cam rod below by the connecting rod locking bolt.

[0012] As a further improvement of the utility model, a first clamping and locking hole and a second clamping and locking hole are provided on the base, and a clamping and locking side wall recessed inward is provided in the middle part of the cam rod. The clamping and locking bolt passes through the first clamping and locking hole and is then connected with the second clamping and locking hole. In the above process, the clamping and locking bolt contacts and is tightened with the inner clamping and locking side wall.

[0013] As a further improvement of the utility model, a plurality of base locking bolts are also installed at the bottom of the base.

[0014] As a further improvement of the utility model, a plurality of gaskets are installed between the cap and the top of the positioning column housing, and between the dial and the bottom of the positioning column housing.

[0015] As a further improvement of the utility model, a plurality of bearings are sequentially installed on the connecting rod located in the positioning column housing from top to bottom.

[0016] As a further improvement of the utility model, the scale plate is provided with a handle, and the scale plate mounting platform is provided with a notch of an arc structure, and the handle can move freely in the notch.

[0017] As a further improvement of the utility model, at least one base positioning pin is provided on the base, and a base positioning pin hole matching with the above-mentioned base positioning pin is provided at the bottom of the base.

[0018] By means of the above solution, the utility model has at least the following advantages:

[0019] The positioning column assembly of the utility model can be fine-tuned and can be visually adjusted, which is convenient to use;

[0020] After the positioning column assembly is adjusted, the utility model can be tightened and locked by tightening the locking bolt, and tightening and loosening are more convenient.

[0021] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a circular precision positioning device with an adjustable pre-positioning platform of the utility model;

[0024] Figure 2 yes Figure 1 Schematic diagram of the internal structure;

[0025] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle dial;

[0026] Figure 4 yes Figure 2 A schematic diagram of the structure on one side of the middle base;

[0027] Figure 5 yes Figure 2 Schematic diagram of the structure on the other side of the middle base;

[0028] Figure 6 yes Figure 2 Schematic diagram of the structure of the middle cam rod;

[0029] Figure 7 yes Figure 2 Schematic diagram of the structure of the middle base.

[0030] The meanings of the various reference numerals in the figures are as follows.

[0031] Base 1, base 2, positioning column assembly 3, dial 4, holding and locking bolt 5, base locking bolt 6, cover cap 7, positioning column housing 8, connecting rod locking bolt 9, gasket 10, connecting rod 11, bearing 12, cam rod 13, base locking bolt 14, handle 15, scale 16, dial positioning groove 17, dial mounting platform 18, notch 19, first holding and locking hole 20, second holding and locking hole 21, base positioning pin hole 22, cam rod positioning pin 23, holding and locking side wall 24, base positioning pin 25. DETAILED DESCRIPTION

[0032] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] In order to make the technical personnel in the technical field better understand the scheme of the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but only represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0034] Example

[0035] like Figure 1 to Figure 7 As shown,

[0036] A circular precision positioning device with an adjustable pre-positioning platform comprises a base 1, a pedestal 2, a positioning column assembly 3, a graduated plate 4 and a cam rod 13.

[0037] 1. The installation structure between the base 1, the base 2, the dial 4 and the cam rod 13:

[0038] A plurality of base locking bolts 6 are installed at the bottom of the base 1. The base 1 is locked with the base 2 above by the base locking bolts 14. The cam rod 13 is installed in the cam cavity inside the base 2. A dial mounting platform 18 for placing the dial 4 is provided at the top of the base 2. The dial 4 is provided with a scale 16. The dial 4 is provided with a handle 15. The dial mounting platform 18 is provided with a notch 19 of an arc structure, and the handle 15 can move freely in the notch 19. A dial clamping groove 17 is provided on one side of the center hole of the dial 4. A cam rod positioning pin 23 is provided on the top of the cam rod 13 directly below the dial clamping groove 17. The cam rod positioning pin 23 is located in the dial clamping groove 17.

[0039] At least one base positioning pin 25 is disposed on the base 1 , and a base positioning pin hole 22 matching with the base positioning pin 25 is disposed at the bottom of the base 2 .

[0040] 2. Structure and installation structure of positioning column assembly 3:

[0041] The positioning column assembly 3 includes a cap 7, a positioning column housing 8 and a connecting rod 11. The top of the connecting rod 11 located in the positioning column housing 8 is locked with the cap 7 above by a connecting rod locking bolt 9. The bottom of the connecting rod 11 passes through the center hole of the dial 4 and is locked with the cam rod 13 below by the connecting rod locking bolt 9. A plurality of gaskets 10 are installed between the cap 7 and the top of the positioning column housing 8 and between the dial 4 and the bottom of the positioning column housing 8. A plurality of bearings 12 are installed on the connecting rod 11 located in the positioning column housing 8 in sequence from top to bottom.

[0042] The handle 15 drives the dial 4 to rotate, the dial 4 drives the cam rod 13 to rotate, the cam rod 13 drives the connecting rod 11 and the cap 7 to rotate. Since the cam rod 13 is an eccentric cam structure, the cam rod 13 and the cap 7 move eccentrically, and the adjustment range is approximately plus or minus 1.5 mm.

[0043] 3. The locking structure of the positioning column assembly 3 during adjustment:

[0044] The base 2 is provided with a first clamping and locking hole 20 and a second clamping and locking hole 21, and the middle part of the cam rod 13 is provided with a clamping and locking side wall 24 that is recessed toward the inside. The clamping and locking bolt 5 passes through the first clamping and locking hole 20 and is then connected to the second clamping and locking hole 21. In the above process, the clamping and locking bolt 5 is in contact and pressed with the inner clamping and locking side wall 24. When the positioning column assembly 3 is adjusted to the right position, the clamping and locking bolt 5 is locked between the first clamping and locking hole 20 and the second clamping and locking hole 21. At this time, the clamping and locking bolt 5 is in contact and pressed with the inner clamping and locking side wall 24 to realize the clamping and locking of the positioning column assembly 3.

[0045] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly referring to the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A circular precision positioning device with an adjustable pre-positioning platform, comprising, from bottom to top, a base (1), a pedestal (2) and a positioning column assembly (3); Features: The base (1) is locked with the upper base (2) by a base locking bolt (14); the cam rod (13) is installed in a cam cavity inside the base (2); a dial mounting platform (18) for placing a dial (4) is provided on the top of the base (2); a scale (16) is provided on the dial (4); a dial clamping groove (17) is provided on one side of the center hole of the dial (4); a cam rod positioning pin (23) is provided on the top of the cam rod (13) directly below the dial clamping groove (17); and the cam rod positioning pin (23) is located in the dial clamping groove (17); The positioning column assembly (3) comprises a cover cap (7), a positioning column housing (8) and a connecting rod (11); the top of the connecting rod (11) located in the positioning column housing (8) is locked with the upper cover cap (7) through a connecting rod locking bolt (9); the bottom of the connecting rod (11) passes through the center hole of the dial (4) and is locked with the lower cam rod (13) through the connecting rod locking bolt (9).

2. A circular precision positioning device with adjustable pre-positioning platform as claimed in claim 1, characterized in that: The base (2) is provided with a first clamping and locking hole (20) and a second clamping and locking hole (21); the middle part of the cam rod (13) is provided with a clamping and locking side wall (24) recessed toward the inside; the clamping and locking bolt (5) passes through the first clamping and locking hole (20) and is then connected to the second clamping and locking hole (21); in the above process, the clamping and locking bolt (5) is in contact and pressed with the inner clamping and locking side wall (24).

3. A circular precision positioning device with adjustable pre-positioning platform as claimed in claim 1, characterized in that: A plurality of base locking bolts (6) are also installed at the bottom of the base (1).

4. A circular precision positioning device with adjustable pre-positioning platform as claimed in claim 1, characterized in that: A plurality of gaskets (10) are installed between the cover cap (7) and the top of the positioning column housing (8), and between the scale plate (4) and the bottom of the positioning column housing (8).

5. The circular precision positioning device with adjustable pre-positioning platform as claimed in claim 1, characterized in that: A plurality of bearings (12) are installed in sequence from top to bottom on the connecting rod (11) located in the positioning column housing (8).

6. A circular precision positioning device with adjustable pre-positioning platform as claimed in claim 1, characterized in that: The scale plate (4) is provided with a handle (15), and the scale plate mounting platform (18) is provided with a notch (19) with an arc structure, and the handle (15) can move freely in the notch (19).

7. A circular precision positioning device with adjustable pre-positioning platform as claimed in claim 1, characterized in that: The base (1) is provided with at least one base positioning pin (25), and the bottom of the base (2) is provided with a base positioning pin hole (22) matched with the base positioning pin (25).

Images