Positioning tool

Abstract

The utility model belongs to the technical field of machining, and discloses a positioning tool which comprises a bearing seat, a main shaft, two semi-ring pieces and two locking hand wheels, the main shaft is arranged on the bearing seat in a penetrating mode, one end of the main shaft is provided with an adjusting hand wheel, and the other end of the main shaft is used for installing a workpiece. The two semi-ring pieces surround the periphery of the main shaft at intervals; the two locking hand wheels are installed on the two sides of the bearing base in a threaded mode respectively, correspond to the two semi-ring pieces one to one and are used for pushing the semi-ring pieces to tightly hold the main shaft. The two locking hand wheels are rotated, so that the two semi-ring pieces can tightly hold the main shaft, the main shaft is prevented from driving the workpiece to deviate, after machining of one preset position of the workpiece is completed, the locking hand wheels are loosened, the two semi-ring pieces loosen the main shaft, the adjusting hand wheel is rotated, the main shaft drives the workpiece to rotate to the preset angle position, and then the locking hand wheels are rotated. And the two semi-ring pieces can tightly hold the main shaft. The positioning tool is simple in structure, low in cost, convenient to operate and high in machining efficiency.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to positioning fixtures. Background Technology

[0002] Positioning fixtures are a common structure in the field of machining. After the workpiece is placed in the positioning fixture, locking components are used to lock the workpiece in the positioning fixture, so that the workpiece can be processed in a preset posture. Some workpieces have multiple positions to be processed. After a certain position is processed, the posture of the workpiece needs to be adjusted. Currently, it is not possible to adjust the posture of the workpiece on the positioning fixture alone. The positioning fixture and the workpiece can only be adjusted together, which is cumbersome. Utility Model Content

[0003] The purpose of this invention is to provide a positioning fixture and optimize the structure so that the spindle can be rotated and adjusted on the support.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] Positioning fixtures, including:

[0006] Support;

[0007] A main shaft is inserted through the bearing seat, with an adjusting handwheel installed at one end of the main shaft and a workpiece installed at the other end of the main shaft;

[0008] Two semi-ring components are spaced apart and encircle the circumference of the main shaft;

[0009] Two locking handwheels are threadedly installed on both sides of the bearing seat, and the two locking handwheels correspond one-to-one with the two semi-ring parts. The locking handwheels are used to push the semi-ring parts to hug the main shaft.

[0010] As an optional technical solution, the spindle is provided with a first annular groove on its periphery, and both of the two semi-ring parts are accommodated in the first annular groove.

[0011] As an optional technical solution, the spindle is provided with a limiting stage at one end for mounting the workpiece, and a first plane bearing is provided between the limiting stage and the bearing seat, the first plane bearing being sleeved on the periphery of the spindle.

[0012] As an optional technical solution, the bearing seat is fixedly equipped with a protective ring, which surrounds the periphery of the first planar bearing.

[0013] As an optional technical solution, the periphery of the limiting platform is provided with a second annular groove, and a sealing ring is tightly fitted into the second annular groove, with the outer wall of the sealing ring tightly abutting against the inner wall of the protective ring.

[0014] As an optional technical solution, the bearing seat is threaded with two positioning handwheels, and the end of the main shaft away from the workpiece is provided with a rear fixing plate. The two positioning handwheels are respectively located on both sides of the rear fixing plate and face each other. The rear fixing plate has four notches on its periphery, and the four notches are equidistantly distributed around the central axis of the main shaft. The positioning handwheels are used to insert into the notches to position the rear fixing plate.

[0015] As an optional technical solution, a second planar bearing is provided between the rear fixing plate and the bearing seat, and the second planar bearing is sleeved on the periphery of the main shaft.

[0016] As an optional technical solution, the rear fixing plate is provided with a protective part on the side facing the bearing seat, and the protective part surrounds the periphery of the second planar bearing.

[0017] As an optional technical solution, one of the protective part and the bearing seat is provided with a protruding ring, and the other of the two is provided with a third annular groove, the protruding ring extending into the third annular groove.

[0018] As an optional technical solution, a clamping ring is provided between the rear fixing plate and the second planar bearing, and the clamping ring presses the second planar bearing against the bearing seat.

[0019] The beneficial effects of this utility model are:

[0020] The positioning fixture provided by this utility model includes a bearing seat, a main shaft, two semi-ring parts, and two locking handwheels. The main shaft passes through the bearing seat, and an adjusting handwheel is installed at one end of the main shaft. The other end of the main shaft is used to install the workpiece. The two semi-ring parts are spaced around the circumference of the main shaft. The two locking handwheels are respectively threaded on both sides of the bearing seat. The two locking handwheels correspond one-to-one with the two semi-ring parts. The locking handwheels are used to push the semi-ring parts to clamp the main shaft.

[0021] The two locking handwheels counteract the spindle's force, allowing the two semi-rings to grip it tightly, preventing the spindle from shifting the workpiece. Once one of the workpiece's preset positions is completed, the locking handwheels are released, releasing the spindle's tension. The adjusting handwheel is then rotated, causing the spindle to rotate the workpiece to a preset angle position. Finally, the locking handwheels are rotated again, allowing the two semi-rings to grip the spindle tightly. This new positioning fixture features a simple structure, low cost, convenient operation, and high processing efficiency. Attached Figure Description

[0022] Figure 1 This is a first-view structural schematic diagram of the positioning tooling of this utility model;

[0023] Figure 2 This is a second-view structural schematic diagram of the positioning tooling of this utility model;

[0024] Figure 3 This is a front sectional view of the positioning tooling of this utility model;

[0025] Figure 4 yes Figure 3 A magnified view of a portion of position A in the middle;

[0026] Figure 5 yes Figure 3 A magnified view of a portion of position B in the middle;

[0027] Figure 6 This is a top sectional view of the positioning fixture of this utility model.

[0028] In the picture:

[0029] 1. Bearing seat; 101. Third annular groove; 2. Main shaft; 21. First annular groove; 22. Limiting platform; 23. Second annular groove; 3. Adjusting handwheel; 4. Half ring; 5. Locking handwheel; 6. First plane bearing; 7. Protective ring; 8. Positioning handwheel; 9. Rear fixing plate; 91. Notch; 92. Protective part; 93. Protruding ring; 10. Second plane bearing; 11. Pressure ring; 12. Front fixing plate; 13. Front base; 14. Ball pin; 15. Support plate; 16. Thrust bearing; 17. Locking plate. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] like Figures 1 to 6 As shown, the positioning fixture provided in this embodiment includes a bearing seat 1, a main shaft 2, two semi-ring parts 4, and two locking handwheels 5; the main shaft 2 passes through the bearing seat 1, one end of the main shaft 2 is equipped with an adjusting handwheel 3, and the other end of the main shaft 2 is used to install the workpiece; the two semi-ring parts 4 are spaced around the periphery of the main shaft 2; the two locking handwheels 5 are respectively threaded on both sides of the bearing seat 1, and the two locking handwheels 5 correspond one-to-one with the two semi-ring parts 4, and the locking handwheels 5 are used to push the semi-ring parts 4 to clamp the main shaft 2.

[0035] Specifically, due to the pushing action of the two locking handwheels 5, the two semi-ring parts 4 can hold the spindle 2 tightly, preventing the spindle 2 from causing the workpiece to shift. After one of the preset positions of the workpiece is processed, the locking handwheels 5 are released, the two semi-ring parts 4 release the spindle 2, and the adjusting handwheel 3 is rotated to make the spindle 2 drive the workpiece to rotate to the preset angle position. Then, the locking handwheels 5 are rotated again so that the two semi-ring parts 4 can hold the spindle 2 tightly. The positioning fixture structure of this embodiment is simple, low in cost, easy to operate, and has fast processing efficiency.

[0036] Optionally, the bearing seat 1 has a through hole in the middle, and threaded holes are provided on both sides of the through hole. The threaded holes are connected to the through hole. The main shaft 2 passes through the through hole. The semi-ring 4 is wrapped around the circumference of the main shaft 2 and faces the threaded hole. The locking handwheel 5 is threaded into the threaded hole. When the locking handwheel 5 is rotated, the locking handwheel 5 moves closer to or away from the semi-ring 4, thereby locking or loosening the semi-ring 4.

[0037] Optionally, the main shaft 2 has a first annular groove 21 around its periphery, and both semi-ring parts 4 are accommodated in the first annular groove 21. After the locking handwheel 5 is released, the semi-ring parts 4 are still accommodated in the first annular groove 21, and the first annular groove 21 limits the semi-ring parts 4 to prevent them from deviating from the preset position along the axial direction.

[0038] Optionally, the spindle 2 is provided with a limiting stage 22 at one end for mounting the workpiece, and a first plane bearing 6 is provided between the limiting stage 22 and the bearing seat 1. The first plane bearing 6 is sleeved on the periphery of the spindle 2.

[0039] When the processing equipment processes the workpiece, the spindle 2 is subjected to axial force. In this embodiment, a first plane bearing 6 is provided between the limiting stage 22 and the bearing seat 1 to support the limiting stage 22.

[0040] Optionally, a front fixing plate 12 is installed on the end face of the limiting stage 22. The front fixing plate 12 has multiple threaded holes. The workpiece is locked to the front fixing plate 12 with threaded fasteners, so that the workpiece can rotate together with the front fixing plate 12 and the spindle 2.

[0041] Optionally, a protective ring 7 is fixedly installed on the bearing seat 1, and the protective ring 7 surrounds the periphery of the first planar bearing 6. When the processing equipment processes the workpiece, it generates waste coolant and waste material. In this embodiment, the protective ring 7 is used to isolate and protect the first planar bearing 6, thereby extending the service life of the first planar bearing 6.

[0042] Optionally, the periphery of the limiting platform 22 is provided with a second annular groove 23, and a sealing ring is tightly fitted into the second annular groove 23. The outer wall of the sealing ring is in close contact with the inner wall of the protective ring 7. The sealing ring is an existing product, and its structure is not shown. In this embodiment, the sealing ring is sealed between the limiting platform 22 and the protective ring 7 to prevent waste coolant and waste materials from contacting the first planar bearing 6.

[0043] Optionally, the positioning fixture also includes a front base 13 and a ball pin 14. The ball pin 14 is fixedly installed on the top of the front base 13. When the spindle 2 drives the workpiece to rotate to a preset angle, the front base 13 moves to the bottom of the workpiece, and the ball pin 14 presses against the bottom of the workpiece.

[0044] Optionally, the bearing seat 1 is threaded with two positioning handwheels 8, and the end of the main shaft 2 away from the workpiece is provided with a rear fixing plate 9. The two positioning handwheels 8 are located on both sides of the rear fixing plate 9 and face each other. The periphery of the rear fixing plate 9 is provided with four notches 91, which are equidistantly distributed around the central axis of the main shaft 2. The positioning handwheels 8 are used to insert into the notches 91, thereby positioning the rear fixing plate 9.

[0045] The workpiece positioned by the positioning fixture provided in this embodiment needs to be machined at a right angle. In order to ensure the perpendicularity and flatness requirements of the workpiece, this embodiment uses two positioning handwheels 8 to limit the rotation of the rear fixed plate 9. For example, the four notches 91 of the rear fixed plate 9 are the first notch, the second notch, the third notch and the fourth notch. Before machining the workpiece, the first positioning handwheel 8 is inserted into the first notch and the second positioning handwheel 8 is inserted into the second notch. Since the four notches 91 are equidistantly distributed around the central axis of the spindle 2, after releasing the positioning handwheel 8 and the locking handwheel 5, the spindle 2 and the workpiece are quickly rotated by adjusting the handwheel 3 by 90°. At this time, the first positioning handwheel 8 is aligned with the second notch and the second positioning handwheel 8 is aligned with the third notch. Then the positioning handwheel 8 and the locking handwheel 5 are locked. The above steps are repeated until the workpiece is machined at a right angle.

[0046] Optionally, a second planar bearing 10 is provided between the rear fixing plate 9 and the bearing seat 1, and the second planar bearing 10 is sleeved on the periphery of the main shaft 2. When the adjusting handwheel 3 is rotated, the main shaft 2 is subjected to axial force, and the second planar bearing 10 supports the rear fixing plate 9.

[0047] Optionally, the rear fixing plate 9 has a protective part 92 on the side facing the bearing seat 1, and the protective part 92 surrounds the periphery of the second planar bearing 10. The protective part 92 isolates and protects the second planar bearing 10, preventing damage to the second planar bearing 10 and extending the service life of the second planar bearing 10.

[0048] Optionally, one of the protective part 92 and the bearing seat 1 is provided with a protruding ring 93, and the other is provided with a third ring groove 101. The protruding ring 93 extends into the third ring groove 101 to prevent waste coolant and waste materials from seeping into the space where the second plane bearing 10 is located.

[0049] Optionally, a clamping ring 11 is provided between the rear fixing plate 9 and the second planar bearing 10, and the clamping ring 11 presses the second planar bearing 10 against the bearing seat 1.

[0050] Optionally, the positioning fixture also includes a support plate 15, a thrust bearing 16, and a locking plate 17. The support plate 15 is fixedly installed on the bearing seat 1. The locking plate 17, the support plate 15, and the thrust bearing 16 are arranged sequentially in a direction away from the rear fixed plate 9. The adjusting handwheel 3 passes through the thrust bearing 16, the support plate 15, and the locking plate 17 in sequence and is then threadedly connected to the rear fixed plate 9.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A positioning tool, characterized in that Include: Bearing seat (1); Main shaft (2), threaded in the bearing seat (1), one end of the main shaft (2) is provided with an adjusting hand wheel (3), the other end of the main shaft (2) is used for installing a workpiece; Two half ring members (4) are spaced around the periphery of the main shaft (2); Two locking hand wheels (5) are respectively threaded on both sides of the bearing seat (1), two locking hand wheels (5) correspond to two half ring members (4), the locking hand wheel (5) is used for pushing the half ring member (4) to tightly embrace the main shaft (2).

2. The positioning tool of claim 1, wherein The periphery of the main shaft (2) is provided with a first ring groove (21), and the two half ring members (4) are accommodated in the first ring groove (21).

3. The positioning tool of claim 1, wherein The end of the main shaft (2) for installing the workpiece is provided with a limiting table (22), a first plane bearing (6) is arranged between the limiting table (22) and the bearing seat (1), and the first plane bearing (6) is sleeved on the periphery of the main shaft (2).

4. The positioning tool of claim 3, wherein The bearing seat (1) is fixedly provided with a protective ring (7), and the protective ring (7) surrounds the periphery of the first plane bearing (6).

5. The positioning tool of claim 4, wherein The periphery of the limiting table (22) is provided with a second ring groove (23), the second ring groove (23) is tightly sleeved with a sealing ring, and the outer wall of the sealing ring tightly abuts against the inner wall of the protective ring (7).

6. The positioning fixture of claim 1, wherein The bearing seat (1) is threaded with two positioning hand wheels (8), the end of the main shaft (2) away from the workpiece is provided with a rear fixed plate (9), the two positioning hand wheels (8) are respectively located on both sides of the rear fixed plate (9), and the two positioning hand wheels (8) face each other, the periphery of the rear fixed plate (9) is provided with four notches (91), and the four notches (91) are equidistantly and spacedly distributed around the central axis of the main shaft (2), the positioning hand wheel (8) is used for embedding the notch (91), so as to position the rear fixed plate (9).

7. The positioning fixture of claim 6, wherein The second plane bearing (10) is arranged between the rear fixed plate (9) and the bearing seat (1), and the second plane bearing (10) is sleeved on the periphery of the main shaft (2).

8. The positioning fixture of claim 7, wherein The side of the rear fixed plate (9) facing the bearing seat (1) is provided with a protection part (92), and the protection part (92) surrounds the periphery of the second plane bearing (10).

9. The positioning fixture of claim 8, wherein, One of the protection part (92) and the bearing seat (1) is provided with a convex ring (93), and the other is provided with a third ring groove (101), and the convex ring (93) extends into the third ring groove (101).

10. The positioning fixture of claim 7, wherein, The compression ring (11) is arranged between the rear fixed plate (9) and the second plane bearing (10), and the compression ring (11) tightly presses the second plane bearing (10) to the bearing seat (1).

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