Auxiliary device for machining center hole in bolt

Abstract

The utility model relates to a bolt machining center hole auxiliary device which comprises a machine frame, an adjustable supporting assembly and an electric drill, the adjustable supporting assembly is arranged on the machine frame in a sliding mode, the electric drill capable of being matched with the adjustable supporting assembly is arranged at one end of the machine frame, and the adjustable supporting assembly comprises a transverse sliding frame, a supporting frame, a positioning block and a pressing rod. Guide rods are arranged on the machine frame in parallel, and the transverse sliding frame is installed on the guide rods in a sliding mode. By adjusting the position of the supporting frame on the transverse sliding frame, the center hole machining device can be suitable for machining center holes of bolts with different diameters, the positions of the positioning block and the positioning rod are adjustable, and the center hole machining device can be suitable for bolts with different lengths; the lead screw nut with the arc-shaped end face enables the lead screw to swing by a certain angle, and the lead screw is prevented from being stressed and distorted. When the bolt is placed on the positioning groove, the bolt is firmly fixed when a center hole is drilled through the cooperation of the positioning rod and the pressing rod. The device is simple in structure, ingenious in design and convenient to maintain and replace parts.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining, and relates to an auxiliary device for machining the center hole of a bolt. Background Art

[0002] The connecting bolt is one of the commonly used standard parts. When machining some bolts, in order to ensure the machining accuracy of the bolts, it is necessary to drill a center hole on the central axis of the bolts, so as to use the center point for fixing when threading. Usually, the center hole of the bolt is machined by a lathe or a drill press, which is troublesome to clamp, has low machining efficiency and high labor intensity; if a manual center hole is drilled, the sizes of the center holes will be inconsistent, resulting in inconvenient control of the axial dimension when the connecting rod bolts are machined with two center points. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies existing in the prior art, solve the problem of low efficiency in machining the center hole of the bolt, and provide an auxiliary device for machining the center hole of the bolt.

[0004] To achieve the above purpose, the following technical solutions are adopted:

[0005] The auxiliary device for machining the center hole of the bolt includes a frame, an adjustable support assembly and an electric drill. The adjustable support assembly is slidably arranged on the frame, and an electric drill capable of cooperating with the adjustable support assembly is arranged at one end of the frame. The adjustable support assembly includes a transverse slide, a support frame, a positioning block and a pressing rod. Guide rods are arranged in parallel on the frame, and guide holes capable of cooperating with the guide rods are arranged in parallel on the transverse slide.

[0006] A grooved inclined plate is arranged on one side of the transverse slide, and an assembly plate capable of cooperating with the grooved inclined plate is arranged on the support frame; connecting pieces are respectively arranged at the four corners of the assembly plate, and the connecting pieces can cooperate with the guide grooves of the grooved inclined plate; a positioning block is arranged at the upper end of the support frame, a positioning groove is opened on the positioning block, and a pressing rod capable of cooperating with the positioning block is arranged on one side of the support frame.

[0007] Preferably, a lead screw is hinged on the support frame at the upper end of the assembly plate, a lead screw nut is arranged on the lead screw, a limit clamping plate capable of cooperating with the lead screw nut is arranged on one side of the transverse slide, a lead screw through groove is opened in the middle of the limit clamping plate, and a lead screw moving groove corresponding to the lead screw through groove is opened on the transverse slide.

[0008] Preferably, an arc-shaped end face is arranged on the end face of the limit baffle of the lead screw nut.

[0009] Preferably, a tool box is arranged on one side of the limit clamping plate, an installation plate is arranged at one end of the tool box, and a positioning rod capable of cooperating with the positioning block is arranged on the installation plate.

[0010] Preferably, a rod mounting groove is formed in the mounting plate, and a fixing nut capable of cooperating with the rod mounting groove is screwed on the positioning rod.

[0011] Preferably, a connecting block is provided on one side of the support frame, a connecting rod is screwed on the connecting block, a hinge seat is provided at the upper end of the connecting rod, and one end of the pressing rod is hinged to the hinge seat by a hinge shaft.

[0012] Preferably, a mounting bracket is provided on one side of the machine frame, and the body of the electric drill is fixedly mounted on the mounting bracket.

[0013] Preferably, an assembly card slot is formed on the upper surface of the support frame, and an assembly card block capable of cooperating with the assembly card slot is provided on the lower surface of the positioning block.

[0014] Preferably, guiding grooves are arranged in parallel on the surface of the grooved inclined plate, a mounting groove is formed in the middle of the grooved inclined plate, a fixing plate is provided at one end of the connecting member, the fixing plate is located in the mounting groove, and the other end of the connecting member is fixed by a hexagonal nut.

[0015] Preferably, a connecting hole is formed in the support frame, a connecting shaft is arranged in the connecting hole, and a connecting ring capable of cooperating with the connecting shaft is arranged on the lead screw.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] By adjusting the position of the support frame on the transverse sliding frame, the utility model can be applicable to the work of processing center holes of bolts with different diameters, and the positions of the positioning block and the positioning rod are adjustable, so as to be able to adapt to bolts with different lengths; the lead screw nut with an arc-shaped end face enables the lead screw to swing a certain angle, avoiding the lead screw from being distorted by force; when the bolt is placed on the positioning groove, through the cooperation between the positioning rod and the pressing rod, the bolt is firmly fixed when drilling the center hole; the structure of the utility model is simple, the design is ingenious, and it is convenient for maintenance and component replacement. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a schematic diagram of the adjustable support assembly structure of the utility model.

[0020] Figure 3 It is a schematic diagram of the transverse sliding frame structure of the utility model.

[0021] Figure 4 It is a schematic diagram of the support frame structure of the utility model.

[0022] Figure 5 It is a schematic diagram of the lead screw part structure of the utility model.

[0023] In the figure: 1, frame; 2, adjustable support assembly; 3, electric drill; 4, horizontal carriage; 5, support frame; 6, positioning block; 7, pressing rod; 8, guide rod; 9, grooved inclined plate; 10, assembly plate; 11, connecting piece; 12, guide groove; 13, positioning groove; 14, lead screw; 15, lead screw nut; 16, limit clamping plate; 17, lead screw through groove; 18, lead screw movable groove; 19, limit baffle; 20, arc end face; 21, tool box; 22, mounting plate; 23, positioning rod; 24, rod mounting card slot; 25, fixing nut; 26, connecting block; 27, connecting rod; 28, hinge seat; 29, hinge shaft; 30, mounting bracket; 31, assembly card slot; 32, assembly card block; 33, mounting groove; 34, fixing plate; 35, hexagon nut; 36, connecting hole; 37, connecting shaft; 38, connecting ring. Detailed implementation manner

[0024] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] As Figures 1 - 5 shown, an auxiliary device for machining the center hole of a bolt includes a frame 1, an adjustable support assembly 2 and an electric drill 3. The adjustable support assembly 2 is slidably arranged on the frame 1, and an electric drill 3 capable of cooperating with the adjustable support assembly 2 is arranged at one end of the frame 1. The frame 1 provides installation support for each component. According to bolts of different specifications, the adjustable support assembly 2 can adjust the position of the bolt left and right and up and down on the frame 1, so as to facilitate the electric drill 3 to machine the center hole of the bolt;

[0026] The adjustable support assembly 2 includes a horizontal carriage 4, a support frame 5, a positioning block 6 and a pressing rod 7. Guide rods 8 are arranged in parallel on the frame 1, and guide holes 39 capable of cooperating with the guide rods 8 are arranged in parallel on the horizontal carriage 4. The adjustable support assembly 2 can slide left and right by the cooperation of the horizontal carriage 4 and the guide rods 8;

[0027] A grooved inclined plate 9 is arranged on one side of the horizontal carriage 4, and an assembly plate 10 capable of cooperating with the grooved inclined plate 9 is arranged on the support frame 5. The assembly plate 10 can slide on the grooved inclined plate 9;

[0028] Connecting pieces 11 are respectively arranged at the four corners of the assembly plate 10. The connecting pieces 11 can cooperate with the guide grooves 12 of the grooved inclined plate 9. The connecting pieces 11 pass through the guide grooves 12 to connect and fix the assembly plate 10 and the grooved inclined plate 9;

[0029] A positioning block 6 is provided at the upper end of the support frame 5, and a positioning groove 13 is opened on the positioning block 6. A pressure rod 7 that can cooperate with the positioning block 6 is provided on one side of the support frame 5. The bolts that need to be processed with the center hole are placed on the positioning groove 13, and then the pressure rod 7 is pushed downward to fix the bolts inside the positioning groove 13.

[0030] Furthermore, a screw rod 14 is hinged on the support frame 5 at the upper end of the assembly plate 10, and a screw rod nut 15 is arranged on the screw rod 14. By rotating the screw rod nut 5, the support frame 5 can be driven by the screw rod 14 to move on the transverse slide 4; a limiting card plate 16 capable of cooperating with the screw rod nut 15 is arranged on one side of the transverse slide 4, and the limiting card plate 16 is used to limit the limiting screw rod nut 15;

[0031] A screw rod slot 17 is provided in the middle of the limiting clamp 16, and one end of the screw rod 14 passes through the limiting clamp 16 through the screw rod slot 17, so that the screw rod nut 15 can cooperate with the limiting clamp 16; a screw rod movable slot 18 corresponding to the screw rod slot 17 is provided on the transverse slide 4, and the screw rod 14 can swing up and down in the screw rod movable slot 18.

[0032] Furthermore, an arcuate end surface 20 is provided on the end surface of the limit baffle 19 of the screw nut 15. When the screw 14 swings up and down in the screw movable groove 18, the arcuate end surface 20 allows the screw nut 15 to have a certain movable space to prevent the screw 14 from twisting.

[0033] Furthermore, a tool box 21 is provided on one side of the limit clamp 16, and tools such as wrenches can be placed in the tool box 21; a mounting plate 22 is provided at one end of the tool box 21, and a positioning rod 23 that can cooperate with the positioning block 6 is provided on the mounting plate 22. The positioning rod 23 can support one end of the bolt, so that the bolt position is fixed when the electric drill 3 drills the center hole.

[0034] Furthermore, a mounting rod slot 24 is provided on the mounting plate 22, and a fixing nut 25 that can cooperate with the mounting rod slot 24 is screwed on the positioning rod 23. After the two fixing nuts 25 are relatively locked, the positioning rod 23 can be fixed on the mounting plate 22; by adjusting the position of the positioning rod 23 in the mounting rod slot 24, the positioning rod 23 can be better aligned with the center of bolts of different specifications and sizes, and by adjusting the matching position of the positioning rod 23 and the fixing nut 25, the positioning rod can be suitable for fixing bolts of different lengths.

[0035] Further, a connection block 26 is provided on one side of the support frame 5. A connecting rod 27 is screwed onto the connection block 26. A hinge seat 28 is provided at the upper end of the connecting rod 27. One end of the pressure rod 7 is hinged to the hinge seat 28 by a hinge shaft 29. Rotating the connecting rod 27 can adjust the height of the hinge seat 28, so that the pressure rod 7 can better adapt to the pressing work of bolts with different diameters.

[0036] Further, an installation bracket 30 is provided on one side of the frame 1. The body of the electric drill 3 is fixedly installed on the installation bracket 30, and the installation bracket 30 provides an installation space for the electric drill 3.

[0037] Further, an assembly card slot 31 is formed on the upper surface of the support frame 5. An assembly card block 32 that can cooperate with the assembly card slot 31 is provided on the lower surface of the positioning block 6. The number of positioning blocks 6 is 2. The positioning block 6 can adjust its position on the support frame 5 by the cooperation of the assembly card block 32 and the assembly card slot 31 to be applicable to bolts of different lengths. The two positioning blocks 6 support the two ends of the bolt, which is convenient for better cooperation with the pressure rod 7 and prevents one end of the bolt from lifting when the pressure rod 7 presses down.

[0038] Further, two guiding grooves 12 are arranged in parallel on the plate surface of the grooved inclined plate 9, which can keep the position between the assembly plate 10 and the grooved inclined plate 9 accurate and not skewed. An installation slot 33 is formed in the middle of the grooved inclined plate 9. One end of the connecting piece 11 is provided with a fixing plate 34, and the fixing plate 34 is located in the installation slot 33. The other end of the connecting piece 11 is fixed by a hexagon nut 35. The connecting piece 11 fixes the assembly plate 10 and the grooved inclined plate 9 through the cooperation of the fixing plate 34 and the hexagon nut 35.

[0039] Further, a connection hole 36 is formed in the support frame 5. A connection shaft 37 is arranged in the connection hole 36. A connection ring 38 that can cooperate with the connection shaft 37 is arranged on the lead screw 14. The lead screw 14 is hinged to the support frame 5 through the cooperation of the connection ring 38 and the connection shaft 37.

[0040] Working principle: When the present utility model is in use, first, according to the length of the bolt, adjust the length of the positioning rod 23 and the distance between the two positioning blocks 6, so that the two ends of the bolt can be stably placed on the positioning blocks 6. Rotate the connecting rod 27 to adjust the height of the pressure rod 7, so that the pressure rod 7 can stably press the bolt. Then, place the bolt in the positioning slot 13 of the positioning block 6, loosen the four fixing nuts 25 with a wrench, so that the support frame 5 can move on the transverse sliding frame 4. Rotate the lead screw nut 15 to adjust the position of the support frame 5 on the transverse sliding frame 4, so that the center of the bolt is aligned with the drill bit. When the position of the bolt is accurate, then tighten the fixing nuts 25 to make the support frame 5 and the transverse sliding frame 4 stably connected. Then, use the pressure rod 7 to press the bolt tightly, and turn on the electric drill 3 to drill the center hole.

[0041] During use, the lead screw nut 15 with an arc-shaped end face 20 enables the lead screw 14 to swing by a certain angle, avoiding the lead screw 14 from being distorted by force; when the bolt is placed on the positioning groove 13, through the cooperation between the positioning rod 24 and the pressure rod 7, the bolt is firmly fixed when drilling the center hole.

[0042] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present invention, however, the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. An auxiliary device for machining the center hole of a bolt, comprising a frame (1), an adjustable support assembly (2) and a drill (3). The adjustable support assembly (2) is slidably arranged on the frame (1), and a drill (3) capable of cooperating with the adjustable support assembly (2) is arranged at one end of the frame (1). It is characterized in that: The adjustable support assembly (2) includes a transverse carriage (4), a support frame (5), a positioning block (6), and a pressure bar (7). Guide rods (8) are arranged in parallel on the frame (1), and guide holes (39) that can cooperate with the guide rods (8) are arranged in parallel on the transverse carriage (4). A grooved inclined plate (9) is arranged on one side of the transverse carriage (4), and an assembly plate (10) that can cooperate with the grooved inclined plate (9) is arranged on the support frame (5); connecting members (11) are respectively arranged at the four corners of the assembly plate (10), and the connecting members (11) can cooperate with the guide grooves (12) of the grooved inclined plate (9); a positioning block (6) is arranged at the upper end of the support frame (5), a positioning groove (13) is formed in the positioning block (6), and a pressure bar (7) that can cooperate with the positioning block (6) is arranged on one side of the support frame (5).

2. The auxiliary device for machining the center hole of a bolt according to claim 1, wherein: A lead screw (14) is hinged on the support frame (5) at the upper end of the assembly plate (10), a lead screw nut (15) is arranged on the lead screw (14), a limit clamping plate (16) that can cooperate with the lead screw nut (15) is arranged on one side of the transverse carriage (4), a lead screw through groove (17) is formed in the middle of the limit clamping plate (16), and a lead screw moving groove (18) corresponding to the lead screw through groove (17) is formed in the transverse carriage (4).

3. An auxiliary device for machining the center hole of a bolt according to claim 2, characterized in that: An arc-shaped end face (20) is arranged on the end face of the limit baffle (19) of the lead screw nut (15).

4. An auxiliary device for machining the center hole of a bolt according to claim 2, characterized in that: A tool box (21) is arranged on one side of the limit clamping plate (16), a mounting plate (22) is arranged at one end of the tool box (21), and a positioning rod (23) that can cooperate with the positioning block (6) is arranged on the mounting plate (22).

5. An auxiliary device for machining the center hole of a bolt according to claim 4, characterized in that: A rod mounting slot (24) is formed in the mounting plate (22), and a fixing nut (25) that can cooperate with the rod mounting slot (24) is screwed on the positioning rod (23).

6. The auxiliary device for machining the center hole of a bolt according to claim 1, characterized in that: A connecting block (26) is arranged on one side of the support frame (5), a connecting rod (27) is screwed on the connecting block (26), a hinge seat (28) is arranged at the upper end of the connecting rod (27), and one end of the pressure bar (7) is hinged on the hinge seat (28) by a hinge shaft (29).

7. An auxiliary device for machining the center hole of a bolt according to claim 1, characterized in that: A mounting bracket (30) is arranged on one side of the frame (1), and the body of the electric drill (3) is fixedly mounted on the mounting bracket (30).

8. An auxiliary device for machining the center hole of a bolt according to claim 1, characterized in that: An assembly slot (31) is formed on the upper surface of the support frame (5), and an assembly block (32) that can cooperate with the assembly slot (31) is arranged under the positioning block (6).

9. An auxiliary device for machining the center hole of a bolt according to claim 1, characterized in that: Guide grooves (12) are arranged in parallel on the surface of the grooved inclined plate (9), a mounting slot (33) is formed in the middle of the grooved inclined plate (9), a fixing plate (34) is arranged at one end of the connecting member (11), the fixing plate (34) is located in the mounting slot (33), and the other end of the connecting member (11) is fixed by a hexagon nut (35).

10. The auxiliary device for machining the center hole of a bolt according to claim 2, characterized in that: A connecting hole (36) is formed in the support frame (5), a connecting shaft (37) is arranged in the connecting hole (36), and a connecting ring (38) that can cooperate with the connecting shaft (37) is arranged on the lead screw (14).

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