Blank cutting device for mechanical part machining

Abstract

The utility model relates to the technical field of blank cutting devices, in particular to a blank cutting device for machining mechanical parts, which comprises a fixed platform and a cutting device mounted at the top end of the inner wall of the fixed platform, a protective cover is vertically movably arranged below the fixed platform, and a shaft blank inserting hole is formed in the surface of the protective cover. A shaft blank is movably inserted into the shaft blank insertion hole, a horizontal guide rail is fixed to the inner wall of the shaft blank insertion hole, a first bearing plate and a second bearing plate are arranged above the horizontal guide rail, the shaft blank is arranged at the top ends of the first bearing plate and the second bearing plate, and two sets of fixing plates are fixed to the top end of the first bearing plate; the radial positioning device has the beneficial effects that radial positioning of shaft blanks is achieved, the distance between the two sets of side clamping plates and the distance between the upper clamping plate and the first bearing plate can be adjusted, and therefore the radial positioning device can adapt to the shaft blanks of various diameter specifications.

Description

Technical Field

[0001] The utility model relates to the field of blank cutting devices, in particular to a blank cutting device used for machining mechanical parts. Background Art

[0002] The first step in processing many mechanical parts is to cut on the blank, cutting the large-sized blank into small sections to facilitate subsequent processing. This step is required for the processing of automotive shaft parts.

[0003] In the prior art, a patent document with application number CN201120166679.3 reviewed and published by the State Intellectual Property Office of China has published a utility model patent entitled automobile axle blank cutting device, which includes a fixed platform and a cutting motor installed on the fixed platform, and a cutting grinding wheel is installed at the end of the cutting motor; it also includes a movable platform, which is arranged on the fixed platform through a horizontal lower guide rail, and the movable platform can move horizontally along the radial direction of the cutting grinding wheel on the fixed platform, and the movable platform is installed with a horizontal upper guide rail parallel to the axial direction of the cutting grinding wheel, and a limit plate is installed at the front of the horizontal upper guide rail; its innovation lies in: a knife gap is provided on the movable platform, and the knife gap is aligned with the cutting grinding wheel, and a shield is installed on the knife gap. When in use, the steel circle is pressed against the horizontal upper guide rail, the end of the blank is against the limit plate, and the movable platform is pushed to move toward the cutting grinding wheel to achieve cutting. The length of each cutting is the same, and no material waste will be caused. The sparks generated during cutting are blocked in the shield to avoid spark splashing and causing safety hazards.

[0004] However, the automobile axle blank cutting device in the prior art simply presses and holds the blank in radial positioning by means of a pressing block, and the axle blank is in the form of a cylinder, and a shaft groove matching the shaft must be provided at the bottom of the pressing block. The shaft is passed through the shaft groove so that the pressing block is pressed on the axle blank of a certain diameter to achieve radial positioning of the shaft. This results in the inability to adapt to axle blanks of different diameters when the pressing block is used to press and hold the axle blank. Utility Model Content

[0005] The purpose of the utility model is to provide a blank cutting device for machining mechanical parts to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blank cutting device for machining mechanical parts, comprising: a fixed platform and a cutting device installed on the top of the inner wall of the fixed platform, a shield is movably arranged below the fixed platform, a shaft blank insertion hole is provided on the surface of the shield, a shaft blank is movably inserted in the shaft blank insertion hole, a horizontal guide rail is fixed on the inner wall of the shaft blank insertion hole, a first supporting plate and a second supporting plate are provided above the horizontal guide rail, the shaft blank is arranged on the top of the first supporting plate and the second supporting plate, two groups of fixed plates are fixed on the top of the first supporting plate, screw holes are provided on the surface of the fixed plate, a screw rod is rotatably connected in the screw hole, a side splint is rotatably connected to one end of the screw rod, two groups of side splints are arranged, the two groups of side splints are symmetrically distributed about the shaft blank, the side splints are in an "L"-shaped plate structure, an upper splint is movably arranged below the cross plate of the side splint, and the upper splint rests on the top surface of the shaft blank.

[0007] Preferably, a disc is fixed to one end of the screw rod movably connected to the side clamping plate, a rotation seat is provided on the surface of the side clamping plate, and the disc of the screw rod is rotationally connected in the rotation seat.

[0008] Preferably, a pull rod and a spring are fixed to the top end of the upper clamp plate, the rod body of the pull rod is movably inserted into the transverse plate surface of the side clamp plate and the top end of the pull rod extends out of the top end surface of the side clamp plate, and the top end of the spring is fixed to the bottom end of the transverse plate of the side clamp plate.

[0009] Preferably, a raising seat is fixed between the first supporting plate, the second supporting plate and the horizontal guide rail.

[0010] Preferably, a limiting plate is fixed to the top end of the second supporting plate, and the limiting plate abuts against one end surface of the shaft blank.

[0011] Preferably, a hydraulic tappet mechanism is fixed on the inner wall of the fixed platform, and the shield is fixed on the tappet of the hydraulic tappet mechanism.

[0012] Preferably, an observation hole is opened on the surface of the shield, and a glass plate is arranged in the observation hole.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model discloses a blank cutting device for machining mechanical parts. The thread between the screw hole and the screw rod has a self-locking function. When the screw rod is not rotating, the screw rod cannot move relative to the fixed plate, so that the two groups of side clamping plates clamp the two sides of the shaft blank. The elastic force of the spring generates a thrust on the upper clamping plate. This thrust causes the upper clamping plate and the first supporting plate to clamp the upper and lower ends of the shaft blank, thereby realizing the radial positioning of the shaft blank. The distance between the two groups of side clamping plates and the distance between the upper clamping plate and the first supporting plate can be adjusted, so as to adapt to shaft blanks of various diameter specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0018] Figure 4 It is a schematic diagram of the spring cross-section structure;

[0019] Figure 5 for Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0020] Figure 6 Schematic diagram of the internal structure of the shield.

[0021] In the figure: fixed platform 1, protective cover 2, hydraulic push rod mechanism 3, shaft blank insertion hole 4, shaft blank 5, horizontal guide rail 6, first supporting plate 7, fixed plate 8, screw hole 9, screw 10, screw seat 11, side clamping plate 12, upper clamping plate 13, pull rod 14, spring 15, cushion seat 16, second supporting plate 17, limit plate 18, cutting device 19, observation hole 20, glass plate 21. DETAILED DESCRIPTION

[0022] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] See also Figure 1-Figure 6The utility model provides a technical solution: a blank cutting device for machining mechanical parts, comprising: a fixed platform 1 and a cutting device 19 installed on the top of the inner wall of the fixed platform 1, a shield 2 is movably arranged below the fixed platform 1, a shaft blank insertion hole 4 is opened on the surface of the shield 2, a shaft blank 5 is movably inserted in the shaft blank insertion hole 4, a horizontal guide rail 6 is fixed on the inner wall of the shaft blank insertion hole 4, a first supporting plate 7 and a second supporting plate 17 are arranged above the horizontal guide rail 6, the shaft blank 5 is arranged on the top of the first supporting plate 7 and the second supporting plate 17, two groups of fixed plates 8 are fixed on the top of the first supporting plate 7, a screw hole 9 is opened on the surface of the fixed plate 8, a screw rod 10 is rotatably connected in the screw hole 9, one end of the screw 10 is rotatably connected to a side clamping plate 12, and the side clamping plate 12 is provided with two The two groups of side clamps 12 are symmetrically distributed about the shaft blank 5, and the side clamps 12 are in an "L"-shaped plate structure. An upper clamp 13 is movably arranged below the transverse plate of the side clamp 12, and the upper clamp 13 is against the top surface of the shaft blank 5. The screw 10 is movably connected to one end of the side clamp 12 and a disc is fixed thereon. A rotating seat 11 is arranged on the surface of the side clamp 12, and the disc of the screw 10 is rotatably connected in the rotating seat 11. A pull rod 14 and a spring 15 are fixed to the top of the upper clamp 13. The rod body of the pull rod 14 is movably inserted into the transverse plate surface of the side clamp 12 and the top of the pull rod 14 extends out of the top surface of the side clamp 12. The top of the spring 15 is fixed to the bottom end of the transverse plate of the side clamp 12. A limiting plate 18 is fixed to the top of the second supporting plate 17, and the limiting plate 18 is against the surface of one end of the shaft blank 5.

[0025] In actual use, the fixed platform 1 is suspended on the ceiling. Before the shaft blank 5 is inserted into the shaft blank insertion hole 4, the screw rod 10 is first rotated to make the two groups of side clamping plates 12 move away from each other under the action of the threaded connection between the screw rod 10 and the screw hole 9 on the surface of the fixed plate 8. When the screw rod 10 rotates, the disc at the end of the screw rod 10 rotates in the screw seat 11. At the same time, the bottom end of the side clamping plate 12 abuts against the top of the first supporting plate 7 and will not rotate with the screw rod 10 nor will it be separated from the screw rod 10, so that the screw 10 and the side clamping plate 12 are rotatably connected. After completing the above steps, one end of the shaft blank 5 is inserted into the shield 2 through the shaft blank insertion hole 4. When the shaft blank 5 is placed on the top of the first supporting plate 7 and the second supporting plate 17 and the end thereof abuts against the surface of the limit plate 18, on the one hand, the screw rod 10 is rotated to make the two groups of side clamping plates 12 approach each other, and on the other hand, the pull rod 14 is pulled upward to make the upper clamping plate 13 The shaft blank 5 is moved upward, which compresses the spring 15. After the side clamping plate 12 clamps the shaft blank 5 in the middle of the first supporting plate 7, the pull rod 14 is released, and the spring 15 pushes the upper clamping plate 13 downward under its own elastic force and makes the upper clamping plate 13 pressed against the top of the shaft blank 5. The shaft blank 5 is surrounded by the two sets of side clamping plates 12, the two sets of upper clamping plates 13 and the first supporting plate 7, and the thread between the screw hole 9 and the screw rod 10 has a self-locking function. When the screw 10 is not rotating, the screw 10 It is unable to move relative to the fixed plate 8, so that the two groups of side clamps 12 clamp the two sides of the shaft blank 5, and the elastic force of the spring 15 generates a thrust on the upper clamp 13. This thrust makes the upper clamp 13 and the first supporting plate 7 clamp the upper and lower ends of the shaft blank 5, thereby realizing the radial positioning of the shaft blank 5, and the distance between the two groups of side clamps 12 and the distance between the upper clamp 13 and the first supporting plate 7 can be adjusted, so as to adapt to shaft blanks of various diameter specifications.

[0026] Embodiment 2

[0027] On the basis of the first embodiment, in order to realize the up and down movement of the shield 2 , a hydraulic tappet mechanism 3 is fixed on the inner wall of the fixed platform 1 , and the shield 2 is fixed on the tappet of the hydraulic tappet mechanism 3 .

[0028] When the distance that the push rod of the hydraulic push rod mechanism 3 extends from the hydraulic cylinder becomes longer, the shield 2 moves downward. When the distance that the push rod of the hydraulic push rod mechanism 3 extends from the hydraulic cylinder becomes shorter, the shield 2 moves upward, thereby realizing the up and down movement of the shield 2. At the same time, when the shield 2 moves upward, it drives the shaft blank 5 to move upward, so that the shaft blank 5 contacts the cutting device 19, and the cutting device 19 cuts the shaft blank 5.

[0029] Embodiment 3

[0030] On the basis of the second embodiment, in order to prevent the horizontal guide rail 6 from being cut, a raised seat 16 is fixed between the first supporting plate 7, the second supporting plate 17 and the horizontal guide rail 6, and an observation hole 20 is opened on the surface of the protective cover 2, and a glass plate 21 is arranged in the observation hole 20.

[0031] A raising seat 16 is fixed between the first supporting plate 7, the second supporting plate 17 and the horizontal guide rail 6, so that there is a certain height difference between the raising seat 16 and the shaft blank 5. When the cutting device 19 cuts the shaft blank 5 by raising the height of the shield 2, the operator can observe the relative position of the cutting device 19 and the horizontal guide rail 6 through the observation hole 20. After the cutting device 19 completes the cutting of the shaft blank 5, the shortening of the push rod of the hydraulic push rod mechanism 3 is immediately stopped to prevent the horizontal guide rail 6 from contacting the cutting device 19, thereby preventing the horizontal guide rail 6 from being cut. At the same time, a glass plate 21 is arranged in the observation hole 20 to prevent debris from splashing out of the observation hole 20 without affecting the observation.

[0032] In actual use, the fixed platform 1 is suspended on the ceiling. Before the shaft blank 5 is inserted into the shaft blank insertion hole 4, the screw 10 is first rotated to make the two sets of side clamping plates 12 move away from each other under the action of the threaded connection between the screw 10 and the screw hole 9 on the surface of the fixed plate 8. When the screw 10 rotates, the disc at the end of the screw 10 rotates in the screw seat 11, and at the same time, the bottom end of the side clamping plate 12 is against the top of the first supporting plate 7 and will not rotate with the screw 10 nor will it be separated from the screw 10, so that the screw 10 and the side clamping plate 12 are rotationally connected. After completing the above steps, one end of the shaft blank 5 is inserted into the shield 2 through the shaft blank insertion hole 4. When the shaft blank 5 is placed on the first supporting plate 7 and the second supporting plate 1 After the top of 7 and the end thereof abuts against the surface of the limit plate 18, on the one hand, the two groups of side clamping plates 12 are brought closer to each other by rotating the screw rod 10, and on the other hand, the pull rod 14 is pulled upward to make the upper clamping plate 13 move upward, which compresses the spring 15. After the side clamping plates 12 clamp the shaft blank 5 in the middle of the first supporting plate 7, the pull rod 14 is released, and the spring 15 pushes the upper clamping plate 13 downward under the action of its own elastic force and makes the upper clamping plate 13 be pressed against the top of the shaft blank 5. The shaft blank 5 is surrounded by the two groups of side clamping plates 12, the two groups of upper clamping plates 13 and the first supporting plate 7, and the thread between the screw hole 9 and the screw rod 10 has a self-locking function. When the screw 10 is not rotating, the screw 10 cannot move relative to the fixed plate 8, so that the two groups of side clamping plates 12 can lock the shaft blank. 5 is clamped on both sides, and the elastic force of the spring 15 generates a thrust on the upper clamping plate 13. This thrust makes the upper clamping plate 13 and the first supporting plate 7 clamp the upper and lower ends of the shaft blank 5, thereby realizing the radial positioning of the shaft blank 5, and the distance between the two sets of side clamping plates 12 and the distance between the upper clamping plate 13 and the first supporting plate 7 can be adjusted, so as to adapt to shaft blanks of various diameter specifications; when the distance that the push rod of the hydraulic push rod mechanism 3 extends from the hydraulic cylinder becomes longer, the shield 2 moves downward, and when the distance that the push rod of the hydraulic push rod mechanism 3 extends from the hydraulic cylinder becomes shorter, the shield 2 moves upward, thereby realizing the up and down movement of the shield 2, and at the same time, when the shield 2 moves upward, it drives the shaft blank 5 to move upward, so that the shaft blank 5 contacts with the cutting device 19, The cutting device 19 is used to cut the shaft blank 5; the raising seat 16 is fixed between the first supporting plate 7, the second supporting plate 17 and the horizontal guide rail 6, so that there is a certain height difference between the raising seat 16 and the shaft blank 5. When the cutting device 19 is caused to cut the shaft blank 5 by raising the height of the shield 2, the operator can observe the relative position of the cutting device 19 and the horizontal guide rail 6 through the observation hole 20. After the cutting device 19 completes the cutting of the shaft blank 5, the shortening of the push rod of the hydraulic push rod mechanism 3 is immediately stopped, so that the horizontal guide rail 6 does not contact the cutting device 19, thereby preventing the horizontal guide rail 6 from being cut. At the same time, a glass plate 21 is arranged in the observation hole 20 to prevent debris from splashing out of the observation hole 20 without affecting the observation.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blank cutting device for machining mechanical parts, comprising: A fixed platform (1) and a cutting device (19) installed at the top of the inner wall of the fixed platform (1); a shield (2) is movably arranged below the fixed platform (1); a shaft blank insertion hole (4) is opened on the surface of the shield (2); a shaft blank (5) is movably inserted into the shaft blank insertion hole (4); a horizontal guide rail (6) is fixed on the inner wall of the shaft blank insertion hole (4); and the first support plate (7) and the second support plate (17) are arranged above the horizontal guide rail (6); the shaft blank (5) is arranged on the first support plate (7) and the second support plate (17). 7), two groups of fixing plates (8) are fixed on the top of the first supporting plate (7), screw holes (9) are opened on the surface of the fixing plates (8), a screw rod (10) is rotatably connected in the screw hole (9), one end of the screw rod (10) is rotatably connected to a side clamping plate (12), two groups of side clamping plates (12) are provided, the two groups of side clamping plates (12) are symmetrically distributed about the shaft blank (5), the side clamping plates (12) are in an "L"-shaped plate structure, an upper clamping plate (13) is movably provided below the horizontal plate of the side clamping plate (12), and the upper clamping plate (13) is against the top surface of the shaft blank (5).

2. A blank cutting device for machining mechanical parts according to claim 1, characterized in that: A disc is fixed to one end of the screw rod (10) movably connected to the side clamping plate (12), a rotating seat (11) is arranged on the surface of the side clamping plate (12), and the disc of the screw rod (10) is rotatably connected in the rotating seat (11).

3. A blank cutting device for machining mechanical parts according to claim 1, characterized in that: A pull rod (14) and a spring (15) are fixed to the top end of the upper clamping plate (13); the rod body of the pull rod (14) is movably inserted on the surface of the transverse plate of the side clamping plate (12) and the top end of the pull rod (14) extends out of the top end surface of the side clamping plate (12); the top end of the spring (15) is fixed to the bottom end of the transverse plate of the side clamping plate (12).

4. A blank cutting device for machining mechanical parts according to claim 1, characterized in that: A raising seat (16) is fixed between the first supporting plate (7), the second supporting plate (17) and the horizontal guide rail (6).

5. The blank cutting device for machining mechanical parts according to claim 1, characterized in that: A limiting plate (18) is fixed on the top end of the second supporting plate (17), and the limiting plate (18) is against the surface of one end of the shaft blank (5).

6. A blank cutting device for machining mechanical parts according to claim 1, characterized in that: A hydraulic tappet mechanism (3) is fixed on the inner wall of the fixed platform (1), and the shield (2) is fixed on the tappet of the hydraulic tappet mechanism (3).

7. A blank cutting device for machining mechanical parts according to claim 1, characterized in that: An observation hole (20) is provided on the surface of the protective cover (2), and a glass plate (21) is arranged in the observation hole (20).

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