High-precision multi-surface positioning clamp for bolt machining

Abstract

The utility model provides a high-precision multi-surface positioning clamp for bolt machining, which relates to the technical field of machining and comprises a base, a roll-over stand and a driving screw. Opposite L-shaped clamping plates are slidably connected into the plate penetrating holes in the overturning frame and the plate penetrating holes in the sliding plate; the driving screw is arranged, the driving screw is rotated through the hand wheel, the clamping plates in the sliding plate are driven to transversely move left and right, so that the clamping distance between the two clamping plates is adjusted, and bolt workpieces of different sizes can be machined; the L-shaped clamping plate is arranged, the horizontal plane of the upper end of the clamping plate abuts against the upper end face of the hexagonal head of the bolt workpiece, and the situation that in the machining process of the bolt workpiece, the bolt workpiece shakes back and forth, and errors of the machining size occur can be avoided; by arranging the rotating frame, the rotating frame rotates in the base rotating table, and the orientation of a screw rod of a bolt workpiece at a horizontal station can be adjusted so as to adapt to multi-angle positioning machining; the problems that an existing positioning clamp is insufficient in clamping force and single in machining station angle are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and more specifically relates to a high-precision multi-faceted positioning fixture for bolt processing. Background Art

[0002] A bolt is a standard component consisting of a head and a shank. The head is usually hexagonal, making it easy to tighten with pliers and then twist. The shank is a cylindrical body with external threads. Bolts are fasteners used to connect two objects with through-holes.

[0003] Based on the above, when tapping a bolt or creating a hexagon socket on the end of the bolt head, it is necessary to first clamp the bolt with a positioning fixture to prevent the bolt from shaking during machining and causing dimensional errors. Existing positioning fixtures have a limited clamping surface, which provides insufficient clamping force for the bolt, and the fixed clamping distance is not suitable for positioning bolts of different sizes. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a high-precision multi-faceted positioning fixture for bolt machining, so as to solve the problems of loose clamping force and single angle of existing positioning fixtures.

[0005] The utility model provides a multi-faceted positioning fixture for bolt machining with high precision, which is achieved by the following specific technical means:

[0006] A high-precision multi-faceted positioning fixture for bolt machining, comprising a base, a plug-in plate A, a plug-in plate B, a circular opening, a rotating table, a rotating frame, a rotating plate, a support, a limit plate, a plug-in plate C, a sliding hole, a turning frame, a base plate, a slide groove, a plate through-hole, a plug-in plate D, a motor base, a sliding plate, a middle plate, a slider, a boss, an upper pressure plate, a clamping plate, a lower pressure plate, a driving screw, a handwheel, and a plug-in block;

[0007] The base includes an upper plate and a lower plate, a plug-in plate A is provided at the front and rear of the lower end of the upper plate of the base, four plug-in plates B are provided in a ring shape at the upper end of the upper plate of the base, a circular opening is opened in the middle of the upper plate of the base, a rotating table is fixedly connected to the outside of the circular opening, and the inner diameter of the rotating table is larger than the radius of the circular opening; the rotating frame includes a rotating plate, two sets of parallel supports are fixedly connected to the rotating plate, a limiting plate is connected between the two legs of the support, a plug-in plate C is provided under the upper plate of the support, and a sliding hole is opened on the outside of the plug-in plate C on the support; the flip frame includes a base plate, a rightward sliding groove is opened under the base plate, a plate through-hole is opened on the left side of the base plate, and a groove is formed on the upper end of the base plate. Two plug-in plates D are provided at the rear, and a plug-in plate D and a group of motor seats are provided in front of the upper end of the base plate; a sliding plate is slidably connected in the slide groove of the flip frame, and the sliding plate includes a middle plate with a plate through-hole opened on the middle plate, and sliders are fixedly connected on both sides of the middle plate, a boss is provided on the right side of the middle plate, and an upper pressure plate is provided below the middle plate; the sliding plate is rotatably connected to one end of the driving screw in the boss on the right side of the sliding plate, and a handwheel is provided at the other end of the driving screw, and the threaded part of the driving screw is inserted through the plug-in block, and the plug-in block is fixed to the rightmost side of the slide groove of the flip frame; relative L-shaped clamping plates are slidably connected in the plate through-holes on the flip frame and the plate through-holes on the sliding plate.

[0008] Furthermore, the rotating plate of the rotating frame is placed on the rotating platform of the base to form a rotating connection; the same positioning pin is inserted into the limiting plate of the rotating frame and the front and rear plug-in plates B of the base.

[0009] Furthermore, a hinge shaft is provided on the leftmost side between the two supports of the rotating frame; a hinge hole is provided on the left side of the base plate, and the hinge hole and the hinge shaft together constitute a hinge pair, and a rotation connection is formed between the rotating frame and the flip frame through the hinge pair.

[0010] Furthermore, two sets of arc grooves are fixedly connected to the bottom of the base plate of the flip frame. The arc groove has a rotation angle slightly greater than ninety degrees. The arc groove is inserted into the sliding hole of the rotating frame. Another positioning pin is inserted into the lower end of the arc groove and the plug-in plate A of the base.

[0011] Furthermore, a plurality of screw holes are provided on the lower plate of the base, and fastening bolts are connected to the threads in the screw holes, with one side of the fastening bolt thread facing downward.

[0012] Furthermore, guide rods A are inserted on both the front and rear sides of the lower pressure plate of the two clamping plates, and a spring is wrapped around the outside of the guide rod A. The upper end of the guide rod A inserted through the left clamping plate is fixedly connected to the flip frame, and the upper and lower ends of the spring respectively rest on the flip frame and the lower pressure plate; the upper end of the guide rod A inserted through the right clamping plate is fixedly connected to the sliding plate, and the upper and lower ends of the spring respectively rest on the upper pressure plate and the lower pressure plate of the sliding plate.

[0013] Furthermore, guide rods B are inserted into the two right-side plug-in boards D, and limit blocks are set at both ends of the guide rods B, which rest on the outside of the plug-in boards D; two clamping blocks are inserted into the guide rods B to form a sliding connection, and the other end of the clamping block is threadedly connected to a bidirectional screw, and the two clamping blocks are respectively inserted into the opposite threaded parts of the bidirectional screw, and the smooth section at the rear end of the bidirectional screw is inserted into the left-side plug-in board D to form a rotating connection, and the front end of the bidirectional screw is fixedly connected to the servo motor, and the servo motor is installed in the motor seat of the flip frame.

[0014] Furthermore, when the two clamping plates clamp the bolt workpiece, the inner walls thereof abut against the hexagonal side plane of the bolt workpiece; and the inner walls of the two clamping blocks abut against the hexagonal edge of the bolt workpiece.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The utility model is provided with a driving screw, which is rotated by a hand wheel to drive the clamping plate in the sliding plate to move horizontally left and right to adjust the clamping distance between the two clamping plates. It can be adapted to process bolt workpieces of different sizes.

[0017] 2. The utility model provides an L-shaped clamping plate, the upper horizontal surface of which rests against the upper end surface of the hexagonal head of the bolt workpiece, thereby preventing the bolt workpiece from rocking back and forth during machining, thereby preventing errors in the machining dimensions.

[0018] 3. The utility model provides a turning frame, which rotates around the hinged pair to adjust the bolt workpiece to a horizontal position; and provides a rotating frame, which rotates within the base rotating table to adjust the direction of the screw of the bolt workpiece in the horizontal position to accommodate positioning machining at more angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the present utility model.

[0020] Figure 2 This utility model Figure 1 side view.

[0021] Figure 3 It is a structural schematic diagram of the turning frame of the utility model.

[0022] Figure 4 It is a structural schematic diagram of the rotating frame of the utility model.

[0023] Figure 5 It is a structural schematic diagram of the sliding plate of the utility model.

[0024] Figure 6 It is a structural diagram of part of the structure of the utility model.

[0025] Figure 7 It is a structural schematic diagram of the utility model at the horizontal processing station.

[0026] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0027] 1. Base; 101. Plug-in board A; 102. Plug-in board B; 103. Circular opening; 104. Rotating table; 2. Rotating frame; 201. Turning plate; 202. Support; 203. Limiting plate; 204. Plug-in board C; 205. Sliding hole; 206. Articulated shaft; 3. Turning frame; 301. Base plate; 302. Slide groove; 303. Plate through hole; 304. Plug-in board D; 305. Motor base; 306. Articulated hole; 30 7. Arc groove; 4. Sliding plate; 401. Middle plate; 402. Slider; 403. Boss; 404. Upper pressure plate; 5. Clamping plate; 501. Lower pressure plate; 6. Guide rod A; 7. Spring; 8. Drive screw; 9. Handwheel; 10. Connecting block; 11. Guide rod B; 111. Limit block; 12. Clamping block; 13. Bidirectional screw; 14. Servo motor; 15. Locating pin; 16. Fastening bolt; 17. Bolt workpiece. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail with reference to 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.

[0029] Example:

[0030] As attached Figure 1 To the attached Figure 7 As shown:

[0031] The utility model provides a multi-faceted positioning fixture for bolt processing with high precision, comprising a base 1, a plug-in plate A101, a plug-in plate B102, a circular opening 103, a rotating table 104, a rotating frame 2, a rotating plate 201, a support 202, a limiting plate 203, a plug-in plate C204, a sliding hole 205, a flip frame 3, a base plate 301, a slide groove 302, a plate through-hole 303, a plug-in plate D304, a motor seat 305, a sliding plate 4, a middle plate 401, a slider 402, a boss 403, an upper pressing plate 404, a clamping plate 5, a lower pressing plate 501, a driving screw 8, a hand wheel 9 and a plug-in block 10;

[0032] The base 1 includes an upper plate and a lower plate. A plug-in plate A101 is provided at the front and rear of the lower end of the upper plate of the base 1. Four plug-in plates B102 are provided in a ring shape at the upper end of the upper plate of the base 1. A circular opening 103 is opened in the middle of the upper plate of the base 1. A rotating table 104 is fixedly connected to the outside of the circular opening 103, and the inner diameter of the rotating table 104 is larger than the radius of the circular opening 103; the rotating frame 2 includes a rotating plate 201, two sets of parallel supports 202 are fixedly connected to the rotating plate 201, a limiting plate 203 is connected between the two legs of the support 202, a plug-in plate C204 is provided under the upper plate of the support 202, and a sliding hole 205 is opened on the outside of the plug-in plate C204 on the support 202; the flip frame 3 includes a base plate 301, a right-facing slide groove 302 is opened under the base plate 301, a plate through-hole 303 is opened on the left side of the base plate 30 Two plug-in boards D304 are provided at the rear of the upper end of 1, and a plug-in board D304 and a group of motor seats 305 are provided at the front of the upper end of the base plate 301; a sliding plate 4 is slidably connected in the sliding groove 302 of the turning frame 3, and the sliding plate 4 includes a middle plate 401, a plate through-hole 303 is opened on the middle plate 401, and sliders 402 are fixedly connected on both sides of the middle plate 401, a boss 403 is provided on the right side of the middle plate 401, and an upper pressure plate 404 is provided below the middle plate 401; one end of the driving screw 8 is rotatably connected in the boss 403 on the right side of the sliding plate 4, and a handwheel 9 is provided at the other end of the driving screw 8. The threaded portion of the driving screw 8 is inserted through the plug-in block 10, and the plug-in block 10 is fixed to the rightmost side of the sliding groove 302 of the turning frame 3; opposite L-shaped clamping plates 5 are slidably connected in the plate through-hole 303 on the turning frame 3 and the plate through-hole 303 on the sliding plate 4.

[0033] Among them, such as Figure 1 As shown, the rotating plate 201 of the rotating frame 2 is placed on the rotating table 104 of the base 1 to form a rotating connection; the same positioning pin 15 is inserted into the limit plate 203 of the rotating frame 2 and the front and rear plug-in plates B102 of the base 1. When the rotating flip frame 3 is rotated to adjust the bolt workpiece 17 to the horizontal position, the rotating frame 2 can be rotated on the base 1 to adjust the direction of the screw of the bolt workpiece 17 to adapt to the processing of multi-angle positions.

[0034] Among them, such as Figure 4 As shown, a hinge shaft 206 is provided on the leftmost side between the two supports 202 of the rotating frame 2; a hinge hole 306 is provided on the left side of the base plate 301, and the hinge hole 306 and the hinge shaft 206 together constitute a hinge pair, and the rotating frame 2 and the flip frame 3 are rotatably connected through the hinge pair.

[0035] Among them, such as Figure 1As shown, two groups of arc grooves 307 are fixedly connected to the bottom of the base plate 301 of the flip frame 3. The arc groove 307 has a rotation angle slightly greater than ninety degrees. The arc groove 307 is inserted into the sliding hole 205 of the rotating frame 2. Another positioning pin 15 is inserted into the lower end of the arc groove 307 and the plug-in board A101 of the base 1 to limit the flip frame 3 so that the base plate 301 of the flip frame 3 is in a horizontal state. After pulling out the positioning pin 15, the arc groove 307 can slide in the sliding hole 205 of the rotating frame 2 to adjust the base plate 301 of the flip frame 2 to a vertical state.

[0036] Among them, such as Figure 1 As shown, a plurality of screw holes are provided on the lower plate of the base 1, and fastening bolts 16 are connected to the inner threads of the screw holes. The threaded side of the fastening bolts 16 faces downward, and the positioning fixture is fixed to the working platform by the fastening bolts 16.

[0037] Among them, such as Figure 6 As shown, guide rods A6 are inserted on both the front and rear sides of the lower pressure plate 501 of the two clamping plates 5, and a spring 7 is wrapped around the outside of the guide rod A6, wherein the upper end of the guide rod A6 inserted through the left clamping plate 5 is fixedly connected to the flip frame 3, and the upper and lower ends of the spring 7 respectively rest on the flip frame 3 and the lower pressure plate 501; the upper end of the guide rod A6 inserted through the right clamping plate 5 is fixedly connected to the sliding plate 4, and the upper and lower ends of the spring 7 respectively rest on the upper pressure plate 404 and the lower pressure plate 501 of the sliding plate 4. Under the pressure of the spring 7, the horizontal surface of the upper end of the clamping plate 5 rests on the upper end surface of the hexagonal part of the bolt workpiece 17, so as to firmly fix the clamping plate 5 to the bolt workpiece 17.

[0038] Among them, such as Figure 1 As shown, a guide rod B11 is inserted into the two right plug-in boards D304, and limit blocks 111 are set at both ends of the guide rod B11, and the limit blocks 111 are against the outside of the plug-in board D304; two clamping blocks 12 are inserted into the guide rod B11 to form a sliding connection, and the other end of the clamping block 12 is threadedly connected to a bidirectional screw 13, and the two clamping blocks 12 are respectively inserted into the opposite threaded parts of the bidirectional screw 13, and the rear end smooth section of the bidirectional screw 13 is inserted into the left plug-in board D304 to form a rotating connection, and the front end of the bidirectional screw 13 is fixedly connected to the servo motor 14, which is installed in the motor seat 305 of the turning frame 3. When processing bolt workpieces 17 of different specifications, the servo motor 14 drives the clamping block 12 to move toward each other on the bidirectional screw 13, changing the clamping distance between the two clamping blocks 12 to adapt to the size of the hexagonal part of the different bolt workpieces 17, and ensuring that the central axis of the bolt workpiece 17 is always in the middle of the two clamping blocks 12.

[0039] Among them, such as Figure 1As shown, when the two clamping plates 5 clamp the bolt workpiece 17, the inner walls thereof abut against the hexagonal side plane of the bolt workpiece 17; the inner walls of the two clamping blocks 12 abut against the hexagonal edges of the bolt workpiece 17, providing high-precision multi-faceted positioning for the bolt workpiece 17.

[0040] The specific usage and function of this embodiment are as follows:

[0041] In the present invention, the left clamping plate 5 is pulled upward, and the hexagonal part of the bolt workpiece 17 is placed in the gap between the clamping plate 5 and the base plate 301 of the turning frame 3, the hexagonal side surface is close to the inner wall of the clamping plate 5, and the clamping plate 5 clamps the bolt workpiece 17; the right clamping plate 5 is pulled upward, and the hand wheel 9 is turned at the same time, and the clamping distance between the right clamping plate 5 and the left clamping plate 5 is adjusted by driving the screw 8 until the inner walls of the clamping plates 5 on both sides are against the bolt workpiece 17, and the right clamping plate 5 is lowered. Under the action of the spring 7, the upper end horizontal surface of the clamping plate 5 is against the hexagonal upper end surface of the bolt workpiece 17; through the servo motor 14 and the bidirectional screw 13, the clamping block 12 is slid toward each other along the guide rod B11, and the clamping distance between the two clamping blocks 12 is adjusted until the inner walls of the clamping blocks 12 are against the bolt workpiece 17, and the bolt workpiece 17 is firmly clamped by the positioning fixture. If you want to adjust the bolt workpiece 17 to the horizontal position, you can unplug the positioning pins 15 in the plug-in board B102 and the plug-in board A101, rotate the flip frame 3 around the hinge pair until the base plate 301 is perpendicular to the ground, and then insert the positioning pins 15 into the plug-in board C204 to fix the flip frame 3. At this time, the center axis of the bolt workpiece 17 is horizontal.

[0042] Anything not described in detail in the present invention is well known to those skilled in the art.

Claims

1. A high-precision multi-faceted positioning fixture for bolt machining, characterized by: It includes a base (1), a plug-in plate A (101), a plug-in plate B (102), a circular opening (103), a rotating table (104), a rotating frame (2), a rotating plate (201), a support (202), a limit plate (203), a plug-in plate C (204), a sliding hole (205), a flip frame (3), a base plate (301), a slide groove (302), a plate through-hole (303), a plug-in plate D (304), a motor seat (305), a sliding plate (4), a middle plate (401), a slider (402), a boss (403), an upper pressure plate (404), a clamping plate (5), a lower pressure plate (501), a driving screw (8), a hand wheel (9) and a plug-in block (10); The base (1) comprises an upper plate and a lower plate, a plug-in board A (101) is respectively provided at the front and rear ends of the lower end of the upper plate of the base (1), four plug-in boards B (102) are provided in a ring shape at the upper end of the upper plate of the base (1), a circular opening (103) is opened in the middle of the upper plate of the base (1), a rotating platform (104) is fixedly connected to the outer side of the circular opening (103), and the inner diameter of the rotating platform (104) is larger than the radius of the circular opening (103); the rotating frame (2) comprises a rotating plate (201), the rotating plate (201 ) is fixedly connected with two sets of parallel supports (202), a limit plate (203) is connected between the two legs of the support (202), a plug-in board C (204) is set below the upper plate of the support (202), and a sliding hole (205) is opened on the support (202) on the outside of the plug-in board C (204); the flip frame (3) includes a base plate (301), a rightward sliding groove (302) is opened below the base plate (301), a plate through hole (303) is opened on the left side of the base plate (301), and the upper end of the base plate (301) is provided with a plurality of slots (302) extending to the right. Two plug-in boards D (304) are provided at the rear, and a plug-in board D (304) and a set of motor seats (305) are provided at the front of the upper end of the base plate (301); a sliding plate (4) is slidably connected in the slide groove (302) of the flip frame (3), and the sliding plate (4) includes a middle plate (401), a plate through hole (303) is opened on the middle plate (401), and sliders (402) are fixedly connected on both sides of the middle plate (401), a boss (403) is provided on the right side of the middle plate (401), and the middle plate (401) is provided with a plurality of sliding blocks (402). ) is provided below an upper pressure plate (404); the right side boss (403) of the sliding plate (4) is rotatably connected to one end of the driving screw (8), the other end of the driving screw (8) is provided with a hand wheel (9), the threaded portion of the driving screw (8) is inserted through a plug-in block (10), and the plug-in block (10) is fixed to the rightmost side of the sliding groove (302) of the turning frame (3); the plate through hole (303) on the turning frame (3) and the plate through hole (303) on the sliding plate (4) are slidably connected with relative L-shaped clamping plates (5).

2. A high-precision multi-faceted positioning fixture for bolt machining according to claim 1, characterized in that: The rotating plate (201) of the rotating frame (2) is placed on the rotating platform (104) of the base (1) to form a rotating connection; the same positioning pin (15) is inserted into the limiting plate (203) of the rotating frame (2) and the front and rear plug-in plates B (102) of the base (1).

3. The high-precision multi-faceted positioning fixture for bolt machining according to claim 1, characterized in that: A hinge shaft (206) is provided on the leftmost side between the two supports (202) of the rotating frame (2); a hinge hole (306) is provided on the left side of the base plate (301); the hinge hole (306) and the hinge shaft (206) together constitute a hinge pair, and a rotational connection is formed between the rotating frame (2) and the flip frame (3) via the hinge pair.

4. A high-precision multi-faceted positioning fixture for bolt machining according to claim 3, characterized in that: Two sets of arc grooves (307) are fixedly connected to the bottom of the base plate (301) of the flip frame (3). The arc grooves (307) have a rotation angle slightly greater than ninety degrees. The arc grooves (307) are inserted into the sliding holes (205) of the rotating frame (2). Another positioning pin (15) is inserted into the lower end of the arc groove (307) and the plug-in plate A (101) of the base (1).

5. The high-precision multi-faceted positioning fixture for bolt machining according to claim 1, characterized in that: The lower plate of the base (1) is provided with a plurality of screw holes, and the inner threads of the screw holes are connected with fastening bolts (16), with one side of the fastening bolts (16) facing downward.

6. The high-precision multi-faceted positioning fixture for bolt machining according to claim 1, characterized in that: The lower pressure plates (501) of the two clamping plates (5) are both interspersed with guide rods A (6) on both sides, and a spring (7) is wrapped around the outer side of the guide rods A (6). The upper end of the guide rod A (6) interspersed with the left clamping plate (5) is fixedly connected to the turning frame (3), and the upper and lower ends of the spring (7) respectively abut on the turning frame (3) and the lower pressure plate (501); the upper end of the guide rod A (6) interspersed with the right clamping plate (5) is fixedly connected to the sliding plate (4), and the upper and lower ends of the spring (7) respectively abut on the upper pressure plate (404) and the lower pressure plate (501) of the sliding plate (4).

7. The high-precision multi-faceted positioning fixture for bolt machining according to claim 1, characterized in that: The two right plug-in boards D (304) are interspersed with guide rods B (11), and limit blocks (111) are provided at both ends of the guide rods B (11), and the limit blocks (111) are against the outside of the plug-in boards D (304); two clamping blocks (12) are interspersed on the guide rods B (11) to form a sliding connection, and the other ends of the clamping blocks (12) are threadedly connected to the bidirectional screw (13), and the two clamping blocks (12) are respectively interspersed in the opposite threaded parts of the bidirectional screw (13), and the rear end smooth section of the bidirectional screw (13) is interspersed with the left plug-in board D (304) to form a rotation connection, and the front end of the bidirectional screw (13) is fixedly connected to the servo motor (14), and the servo motor (14) is installed in the motor seat (305) of the flip frame (3).

8. The high-precision multi-faceted positioning fixture for bolt machining according to claim 7, characterized in that: When the two clamping plates (5) clamp the bolt workpiece (17), the inner walls thereof abut against the hexagonal side plane of the bolt workpiece (17); and the inner walls of the two clamping blocks (12) abut against the hexagonal edge of the bolt workpiece (17).

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