Hole pattern positioning clamp capable of adapting to special-shaped workpiece

Abstract

The utility model relates to the technical field of positioning clamps, and discloses a hole pattern positioning clamp capable of adapting to special-shaped workpieces, which comprises a base, a circular groove is arranged at the top of the base, a circular plate is arranged in the circular groove, a positioning mechanism is arranged at the top of the circular plate, and the positioning mechanism is arranged on the base. The positioning mechanism comprises a first positioning seat, a second positioning seat, a positioning groove, an anti-slip strip, a vertical plate, a screw rod and a screwing block, the first positioning seat is arranged at the top of the circular plate, the second positioning seat is arranged on the left side of the first positioning seat, and the positioning groove is formed in the top of the first positioning seat and the top of the second positioning seat; the special-shaped workpiece is placed between the first positioning seat and the second positioning seat which are loosened, the screwing block is rotated to drive the lead screw to rotate, the lead screw drives the second positioning seat to be close to the first positioning seat to clamp the special-shaped workpiece, and the special-shaped workpiece is stably clamped by the aid of the anti-slip strips in the positioning grooves. The purpose that the hole pattern positioning clamp can conveniently, accurately and firmly clamp the special-shaped workpiece is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning fixtures, in particular to a hole-type positioning fixture which can adapt to special-shaped workpieces. Background Art

[0002] A positioning fixture is a device used to quickly, conveniently and safely install workpieces. The positioning fixture can quickly clamp and fasten the workpiece and keep the workpiece in the correct position. Therefore, using a positioning fixture to clamp the workpiece during mechanical processing can ensure the processing accuracy of the workpiece and help improve the product quality and production efficiency of the workpiece.

[0003] When the original positioning fixture is used to clamp special-shaped workpieces such as threaded tubes, the clamping mouth of the original positioning fixture is usually a straight structure. Therefore, when clamping a threaded tubular workpiece with a smooth surface and uneven texture, the original positioning fixture cannot be stable and keep the workpiece in the correct position for a long time. At the same time, the clamping surface of the original positioning fixture needs to maintain a rough surface to increase the friction between the clamped workpiece and the clamped workpiece, thereby preventing the workpiece from loosening. However, when clamping a tubular special-shaped workpiece with a threaded structure on the surface, the original fixture is prone to extrusion and wear of the workpiece, thereby affecting the structural accuracy of the special-shaped workpiece. Therefore, the original positioning fixture is not conducive to improving the processing quality of special-shaped workpieces. In view of the above problems, it is urgently necessary to carry out innovative design based on the original hole-type positioning fixture. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the utility model provides a hole-type positioning fixture which can adapt to special-shaped workpieces.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hole-type positioning fixture that can adapt to special-shaped workpieces, including a base, a circular groove is opened on the top of the base, a circular plate is arranged inside the circular groove, and a positioning mechanism is arranged on the top of the circular plate. The positioning mechanism includes a first positioning seat, a second positioning seat, a positioning groove, an anti-slip strip, a vertical plate, a screw rod, and a screw block. The first positioning seat is arranged on the top of the circular plate, the second positioning seat is arranged on the left side of the first positioning seat, and the positioning groove is opened on the top of the first positioning seat and the second positioning seat.

[0008] Preferably, the bottom of the first positioning seat is fixedly connected to the top of the circular plate, the bottom of the second positioning seat is slidably connected to the top of the circular plate, and the second positioning seat is arranged opposite to the first positioning seat, and the anti-slip strip is fixedly connected to the inner wall of the positioning groove. By setting the anti-slip strip, the friction force of clamping can be increased, thereby improving the stability of clamping special-shaped workpieces. The number of anti-slip strips is several, and they are evenly distributed on the inner wall of the positioning groove.

[0009] Preferably, the vertical plate is fixedly mounted on the top of the circular plate, and the screw rod passes through the vertical plate and is threadedly connected to the vertical plate. The right end of the screw rod is rotatably connected to the left side of the second positioning seat through a bearing. The screw block is fixedly mounted on the left end of the screw rod. The screw rod is conveniently rotated by setting the screw block, and a strip groove is provided on the screw block to increase the friction of twisting.

[0010] Preferably, the circular plate is rotatably connected to the circular groove, a rectangular groove is opened at the bottom of the base, and an adjustment mechanism is arranged inside the rectangular groove, the adjustment mechanism includes a rotating shaft, a second bearing, an adjustment plate, a fixed groove, a fixed rod, a connecting plate, a spring, and a pull ring, the rotating shaft is fixedly connected to the bottom of the circular plate, and the bottom passes through the bottom of the inner wall of the circular groove and extends to the inside of the rectangular groove, the second bearing is fixedly installed on the top of the inner wall of the rectangular groove, and the rotating shaft passes through the second bearing, the outer wall of the rotating shaft is fixedly connected to the inner ring of the second bearing, and the rotating shaft is rotatably connected to the base, and the second bearing is arranged to enable the circular plate to rotate stably inside the circular groove.

[0011] Preferably, the adjustment plate is fixedly mounted on the bottom of the rotating shaft, the fixing groove is opened on the adjustment plate, the fixing rod is movably connected to the base, and one end is inserted into the inside of the fixing groove, the number of the fixing grooves is several, the shape of the adjustment plate is circular, and the several fixing grooves are arranged in a circular array on the adjustment plate.

[0012] Preferably, the connecting plate is fixedly sleeved on the outer wall of the fixing rod, and the spring is sleeved on the fixing rod, the two ends of the spring are respectively fixedly connected to the outer wall of the connecting plate and the inner wall of the rectangular groove, and the pull ring is fixedly installed on the other end of the fixing rod. By setting the spring, the fixing rod can be driven to reset, and by setting the pull ring, it is convenient to pull the fixing rod.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a hole positioning fixture that can adapt to special-shaped workpieces and has the following beneficial effects:

[0015] 1. This hole-type positioning fixture that can adapt to special-shaped workpieces places the special-shaped workpiece between the loosened first positioning seat and the second positioning seat, rotates the screw block to drive the screw to rotate, and the screw drives the second positioning seat to approach the first positioning seat to clamp the special-shaped workpiece, and cooperates with the anti-slip strip inside the positioning groove to firmly clamp the special-shaped workpiece, so as to achieve the purpose of the hole-type positioning fixture being able to facilitate accurate and firm clamping of the special-shaped workpiece.

[0016] 2. This hole-type positioning fixture can adapt to special-shaped workpieces. By pulling the pull ring, the fixed rod moves out of a fixed slot on the adjustment plate, and the circular plate is rotated to adjust the angle of the special-shaped workpiece. Then, the pull ring is loosened to insert the fixed rod into the corresponding fixed slot to complete the adjustment of the angle of the special-shaped workpiece, which is convenient for subsequent processing and improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a cross-sectional view of the utility model;

[0020] Figure 3 It is an enlarged view of the utility model A;

[0021] In the figure: 1. base; 2. round plate; 3. positioning mechanism; 31. first positioning seat; 32. second positioning seat; 33. positioning groove; 34. anti-slip strip; 35. vertical plate; 36. screw rod; 37. screw block; 4. adjustment mechanism; 41. rotating shaft; 42. bearing; 43. adjustment plate; 44. fixing groove; 45. fixing rod; 46. connecting plate; 47. spring; 48. pull ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Example 1

[0024] like Figure 1-3As shown, the utility model provides a hole-type positioning fixture that can adapt to special-shaped workpieces, including a base 1, a circular groove is opened on the top of the base 1, a circular plate 2 is arranged inside the circular groove, a positioning mechanism 3 is arranged on the top of the circular plate 2, and the positioning mechanism 3 includes a first positioning seat 31, a second positioning seat 32, a positioning groove 33, an anti-slip strip 34, a vertical plate 35, a screw rod 36, and a screw block 37. The first positioning seat 31 is arranged on the top of the circular plate 2, and the second positioning seat 32 is arranged on the left side of the first positioning seat 31. The positioning groove 33 is opened on the top of the first positioning seat 31 and the second positioning seat 32. The bottom of the first positioning seat 31 is fixedly connected to the top of the circular plate 2, and the bottom of the second positioning seat 32 is fixedly connected to the top of the circular plate 2. The second positioning seat 32 is slidably connected, and the second positioning seat 32 is arranged opposite to the first positioning seat 31. The anti-slip strip 34 is fixedly connected to the inner wall of the positioning groove 33. The anti-slip strip 34 can increase the friction of clamping, thereby improving the stability of clamping special-shaped workpieces. The number of anti-slip strips 34 is several, and they are evenly distributed on the inner wall of the positioning groove 33. The vertical plate 35 is fixedly installed on the top of the circular plate 2, and the screw rod 36 passes through the vertical plate 35 and is threadedly connected to the vertical plate 35. The right end of the screw rod 36 is rotatably connected to the left side of the second positioning seat 32 through a bearing 1. The screw block 37 is fixedly installed on the left end of the screw rod 36. The screw rod 36 is conveniently rotated by setting the screw block 37. The screw block 37 is provided with a strip groove to increase the friction of twisting.

[0025] In this embodiment, the special-shaped workpiece is placed between the loosened first positioning seat 31 and the second positioning seat 32, and the screw block 37 is rotated to drive the screw rod 36 to rotate. The screw rod 36 drives the second positioning seat 32 to approach the first positioning seat 31 to clamp the special-shaped workpiece, and cooperates with the anti-slip strip 34 inside the positioning groove 33 to firmly clamp the special-shaped workpiece, so as to achieve the purpose of the hole-type positioning fixture being able to facilitate accurate and firm clamping of the special-shaped workpiece.

[0026] Example 2

[0027] like Figure 1-3As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the circular plate 2 is rotatably connected to the circular groove, a rectangular groove is provided at the bottom of the base 1, and an adjustment mechanism 4 is arranged inside the rectangular groove, the adjustment mechanism 4 comprises a rotating shaft 41, a bearing 2 42, an adjustment plate 43, a fixed groove 44, a fixed rod 45, a connecting plate 46, a spring 47, and a pull ring 48, the rotating shaft 41 is fixedly connected to the bottom of the circular plate 2, and the bottom passes through the bottom of the inner wall of the circular groove and extends to the inside of the rectangular groove, the bearing 2 42 is fixedly installed on the top of the inner wall of the rectangular groove, and the rotating shaft 41 passes through the bearing 2 42, the outer wall of the rotating shaft 41 is fixedly connected to the inner ring of the bearing 2 42, and the rotating shaft 41 is rotatably connected to the base 1, and the circular plate is made 2 stably rotates inside the circular groove, the adjusting plate 43 is fixedly installed at the bottom of the rotating shaft 41, the fixing groove 44 is opened on the adjusting plate 43, the fixing rod 45 is movably connected to the base 1, and one end is inserted into the inside of the fixing groove 44, the number of the fixing grooves 44 is several, the shape of the adjusting plate 43 is circular, and the several fixing grooves 44 are arranged in a circular array on the adjusting plate 43, the connecting plate 46 is fixedly sleeved on the outer wall of the fixing rod 45, and the spring 47 is sleeved on the fixing rod 45, the two ends of the spring 47 are respectively fixedly connected with the outer wall of the connecting plate 46 and the inner wall of the rectangular groove, the pull ring 48 is fixedly installed on the other end of the fixing rod 45, the spring 47 can be set to drive the fixing rod 45 to reset, and the pull ring 48 is set to facilitate pulling the fixing rod 45.

[0028] In this embodiment, the pull ring 48 is pulled to drive the fixing rod 45 to move away from a fixing groove 44 on the adjustment plate 43, and the circular plate 2 is rotated to adjust the angle of the special-shaped workpiece. Then, the pull ring 48 is released to insert the fixing rod 45 into the corresponding fixing groove 44 to complete the adjustment of the angle of the special-shaped workpiece, facilitate subsequent processing, and improve the practicality of the device.

[0029] The following is a detailed description of the working principle of this hole-type positioning fixture that can adapt to special-shaped workpieces.

[0030] like Figure 1-3As shown, when in use, the special-shaped workpiece is placed between the loosened first positioning seat 31 and the second positioning seat 32, and the screw block 37 is rotated to drive the screw rod 36 to rotate, and the screw rod 36 drives the second positioning seat 32 to approach the first positioning seat 31 to clamp the special-shaped workpiece, and cooperates with the anti-slip strip 34 inside the positioning groove 33 to firmly clamp the special-shaped workpiece, so that the hole-type positioning fixture can facilitate the accurate and firm clamping of the special-shaped workpiece, and the fixing rod 45 is driven to move out of a fixing groove 44 on the adjustment plate 43 by pulling the pull ring 48, and the circular plate 2 is rotated to adjust the angle of the special-shaped workpiece, and then the pull ring 48 is loosened to insert the fixing rod 45 into the corresponding fixing groove 44 to complete the adjustment of the angle of the special-shaped workpiece, facilitate subsequent processing, and improve the practicality of the device; the above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

Claims

1. A hole-type positioning fixture that can adapt to special-shaped workpieces, comprising a base (1), characterized in that: A circular groove is provided on the top of the base (1), a circular plate (2) is arranged inside the circular groove, a positioning mechanism (3) is provided on the top of the circular plate (2), the positioning mechanism (3) comprises a first positioning seat (31), a second positioning seat (32), a positioning groove (33), an anti-slip strip (34), a vertical plate (35), a screw rod (36), and a screw block (37), the first positioning seat (31) is arranged on the top of the circular plate (2), the second positioning seat (32) is arranged on the left side of the first positioning seat (31), and the positioning groove (33) is provided on the top of the first positioning seat (31) and the second positioning seat (32).

2. The hole-type positioning fixture that can adapt to special-shaped workpieces according to claim 1 is characterized in that: The bottom of the first positioning seat (31) is fixedly connected to the top of the circular plate (2), the bottom of the second positioning seat (32) is slidably connected to the top of the circular plate (2), and the second positioning seat (32) is arranged opposite to the first positioning seat (31), and the anti-slip strip (34) is fixedly connected to the inner wall of the positioning groove (33).

3. The hole-type positioning fixture that can adapt to special-shaped workpieces according to claim 2 is characterized in that: The vertical plate (35) is fixedly mounted on the top of the circular plate (2), and the screw rod (36) passes through the vertical plate (35) and is threadedly connected to the vertical plate (35). The right end of the screw rod (36) is rotatably connected to the left side of the second positioning seat (32) through a bearing 1, and the screw block (37) is fixedly mounted on the left end of the screw rod (36).

4. The hole-type positioning fixture that can adapt to special-shaped workpieces according to claim 1 is characterized in that: The circular plate (2) is rotatably connected to the circular groove. A rectangular groove is provided at the bottom of the base (1), and an adjustment mechanism (4) is arranged inside the rectangular groove. The adjustment mechanism (4) comprises a rotating shaft (41), a second bearing (42), an adjustment plate (43), a fixed groove (44), a fixed rod (45), a connecting plate (46), a spring (47), and a pull ring (48). The rotating shaft (41) is fixedly connected to the bottom of the circular plate (2), and the bottom thereof passes through the bottom of the inner wall of the circular groove and extends to the inside of the rectangular groove. The second bearing (42) is fixedly installed on the top of the inner wall of the rectangular groove, and the rotating shaft (41) passes through the second bearing (42). The outer wall of the rotating shaft (41) is fixedly connected to the inner ring of the second bearing (42), and the rotating shaft (41) is rotatably connected to the base (1).

5. The hole-type positioning fixture that can adapt to special-shaped workpieces according to claim 4 is characterized in that: The adjustment plate (43) is fixedly mounted on the bottom of the rotating shaft (41); the fixing groove (44) is provided on the adjustment plate (43); the fixing rod (45) is movably connected to the base (1) and one end of the fixing rod is inserted into the fixing groove (44).

6. The hole-type positioning fixture that can adapt to special-shaped workpieces according to claim 5 is characterized in that: The connecting plate (46) is fixedly sleeved on the outer wall of the fixing rod (45), and the spring (47) is sleeved on the fixing rod (45), the two ends of the spring (47) are respectively fixedly connected to the outer wall of the connecting plate (46) and the inner wall of the rectangular groove, and the pull ring (48) is fixedly installed on the other end of the fixing rod (45).

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