Automatic pre-positioning device for cylindrical grinding

Abstract

The utility model relates to the technical field of steering systems, in particular to an automatic pre-positioning device for cylindrical grinding. An automatic pre-positioning device for cylindrical grinding comprises a bottom plate, a lifter, a lifting motor, a rotary clamping air cylinder, an inductance pen and a rotary motor, and is characterized in that a rotary positioning unit is connected to the bottom plate, a lifter assembly is arranged on the rear side of the rotary positioning unit, and a rotary clamping unit is arranged on the upper side of the lifter assembly. Compared with the prior art, the automatic pre-positioning device for cylindrical grinding is provided, the problem that equipment collides due to the fact that an elastic piece deforms and a part cannot be clamped into a drive in the machining process is fundamentally solved, and the stability in the machining process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steering systems, in particular to an automatic pre-positioning device for cylindrical grinding. Background Art

[0002] In the machining process of steering gears, external cylindrical grinding is one of the most important processes. Most of the key and important assembly dimensions are guaranteed by external cylindrical grinding to achieve the required size, shape and surface quality. During the external cylindrical grinding process, the driving fixture drives the parts to rotate. The parts are placed into the driving fixture from the truss and are compressed and rotated into the driving fixture using spring clips. If the spring clips fail abnormally, the parts cannot be inserted into the drive, which will lead to serious consequences such as inaccurate positioning and collision with the machine, affecting the accuracy of the equipment and the stability of continuous processing. Since the directions and angles of the parts in the material frame are randomly placed, in order to ensure that the parts can be directly placed into the driving fixture each time, rotational rebound is not used to insert the parts into the drive. Since the spring clips do not have repeated compression and rebound, their service life can be extended indefinitely, eliminating the risk of abnormal breakage of the spring clips and collision with the machine.

[0003] Therefore, in the process of continuous automated production, it is very necessary to design an automatic device for pre-positioning and alignment in the middle position of loading and unloading. Summary of the Invention

[0004] The utility model overcomes the deficiencies of the prior art and provides an automatic pre-positioning device for cylindrical grinding, which fundamentally eliminates the problem of equipment collision caused by deformation of spring pieces and failure of parts to be driven during the machining process, thereby improving the stability of the machining process.

[0005] To achieve the above purpose, an automatic pre-positioning device for cylindrical grinding is designed, which includes a base plate, a lifter, a lift motor, a rotary clamping cylinder, an inductive pen, and a rotary motor. The device is characterized in that: a rotary positioning unit is connected to the base plate, a lifter assembly is provided on the rear side of the rotary positioning unit, and a rotary clamping unit is provided on the upper side of the lifter assembly;

[0006] The rotary positioning unit includes a rotary motor, a table top, and a tool base. The bottom plate is connected to the rotary motor. The driving shaft of the rotary motor passes through the table top and is connected to the bottom of the tool base. The top of the tool base is connected to the base protrusion to drive the tool.

[0007] The elevator assembly includes a transition plate, an elevator, and a lifting motor. The rear side of the base plate is connected to the transition plate, the transition plate is provided with an elevator, and the rear side of the elevator is provided with a lifting motor.

[0008] The rotary clamping unit includes a rotary pressing cylinder, a pressure rod, a Z-shaped bracket, an inductive pen, and a sleeve. The top of the elevator is connected to the bottom of the rotary pressing cylinder using a cylinder transition plate, the top driving end of the rotary pressing cylinder is connected to one end of the pressure rod, the middle part of the pressure rod is connected to one end of the inductive pen using a Z-shaped bracket, and the other end of the inductive pen is connected to the sleeve.

[0009] The base protrusion driving tool is a cylindrical structure. The bottom of the base protrusion driving tool is embedded in the upper part of the tool base. A cylindrical protrusion is provided in the center of the top of the base protrusion, and positioning protrusions are provided on both sides of the cylindrical protrusion.

[0010] Side panels are respectively provided on the left and right sides of the rotating motor. The side panels are rectangular panel structures. The bottoms of the side panels are fixedly connected to the bottom plate, and the tops of the side panels are connected to the bottom of the desktop.

[0011] Reflection brackets are respectively provided on the left and right sides of the desktop. The reflection brackets are rectangular panel structures, and waist-shaped holes are provided at the lower parts of the reflection brackets.

[0012] A motor transition plate is sleeved on the output end of the lifting motor, and a motor protection plate is provided on the outer side of the motor transition plate.

[0013] The motor protection plate is a "convex"-shaped frame structure.

[0014] An elevator base is provided on the left and right sides of the elevator. The elevator base is L-shaped. The bottom of the elevator base is connected to the transition plate. The upper part of the elevator base is provided with a waist-shaped hole.

[0015] The bottom of the Z-shaped bracket is connected to the middle of the pressure rod, the top of the Z-shaped bracket is a C-shaped notch structure, the opening of the C-shaped notch structure is connected to the clamping plate, and an inductor pen cover is provided between the opening of the C-shaped notch structure and the clamping plate, and the inductor pen cover is provided on the top of the inductor pen.

[0016] The middle part of the inductive pen is sleeved with a nut, and the lower part of the inductive pen passes through the other end of the pressure rod and is connected with the sleeve; a spring sleeve is located on the top of the sleeve.

[0017] The inductance pen is an LVDT inductance pen for detecting LVDT.

[0018] Compared with the prior art, the utility model provides an automatic pre-positioning device for cylindrical grinding, which fundamentally eliminates the problem of equipment collision caused by deformation of spring pieces and failure of parts to be driven during the processing process, thereby improving the stability of the processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the utility model.

[0020] Figure 2 This is an exploded view of the structure of the utility model.

[0021] Figure 3 Schematic diagram of the structure of parts ground by cylindrical grinding.

[0022] Figure 4 This is a schematic diagram of the base protrusion driving tooling structure in the utility model. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figure 1 , Figure 2 As shown, the base plate 4 is connected to a rotation positioning unit, a lift assembly is provided on the rear side of the rotation positioning unit, and a rotation clamping unit is provided on the upper side of the lift assembly;

[0025] The rotary positioning unit includes a rotary motor, a tabletop, and a tooling base. The rotary motor 23 is connected to the bottom plate 4. The drive shaft of the rotary motor 23 passes through the tabletop 18 and is connected to the bottom of the tooling base 9. The top of the tooling base 9 is connected to the base protrusion driving tool 20.

[0026] The elevator assembly includes a transition plate, an elevator, and a lifting motor. The rear side of the bottom plate 4 is connected to the transition plate 10. The transition plate 10 is provided with an elevator 22. The rear side of the elevator 22 is provided with a lifting motor 21.

[0027] The rotary clamping unit includes a rotary pressing cylinder, a pressure rod, a Z-shaped bracket, an inductive pen, and a sleeve. The top of the elevator 22 is connected to the bottom of the rotary pressing cylinder 1 using a cylinder transition plate 13. The top driving end of the rotary pressing cylinder 1 is connected to one end of the pressure rod 17. The middle part of the pressure rod 17 is connected to one end of the inductive pen 24 using a Z-shaped bracket 2. The other end of the inductive pen 24 is connected to the sleeve 16.

[0028] The base protrusion driving tooling 20 is a cylindrical structure. The bottom of the base protrusion driving tooling 20 is embedded in the upper part of the tooling base 9. A cylindrical protrusion 20-1 is provided in the top center of the base protrusion driving tooling 20, and positioning protrusions 20-2 are provided on both sides of the cylindrical protrusion 20-1.

[0029] Side panels 3 are provided on the left and right sides of the rotating motor 23 . The side panels 3 are rectangular panel structures. The bottoms of the side panels 3 are fixedly connected to the bottom panel 4 , and the tops of the side panels 3 are connected to the bottom of the desktop 18 .

[0030] Reflection brackets 19 are respectively provided on the left and right sides of the desktop 18. The reflection brackets 19 are rectangular panel structures, and waist-shaped holes are provided at the bottom of the reflection brackets 19.

[0031] A motor transition plate 8 is sleeved on the output end of the lifting motor 21 , and a motor protection plate 7 is provided on the outer side of the motor transition plate 8 .

[0032] The motor protection plate 7 is a "convex"-shaped frame structure.

[0033] An elevator base 14 is provided on the left and right sides of the elevator 22 . The elevator base 14 is L-shaped. The bottom of the elevator base 14 is connected to the transition plate 10 , and a waist-shaped hole is provided on the upper portion of the elevator base 14 .

[0034] The bottom of the Z-shaped bracket 2 is connected to the middle of the pressure rod 17, and the top of the Z-shaped bracket 2 is a C-shaped notch structure. The opening of the C-shaped notch structure is connected to the splint 11, and an inductor pen cover 5 is provided between the opening of the C-shaped notch structure and the splint 11. The inductor pen cover 5 is mounted on the top of the inductor pen 24.

[0035] The middle part of the inductive pen 24 is sleeved with a nut 12 , and the lower part of the inductive pen 24 passes through the other end of the pressure rod 17 and is connected to the sleeve 16 ; a spring sleeve 25 is provided at the top of the sleeve 16 .

[0036] The inductance pen 24 is a LVDT inductance pen for detecting.

[0037] The elevator assembly consists of a lifting motor 21 and an elevator 22. It is mainly used to process different products with different total lengths. By adjusting the height of the elevator 22 to be compatible with different products, the length parameters of different products are input into the formula, and the lifting motor 21 can automatically call the parameter formula of the processed product.

[0038] The rotary clamping unit mainly presses the part through the upper rotary pressing cylinder 1 after the part is placed in the positioning fixture, and the rotary motor 23 at the bottom of the part rotates. When the groove of the part falls into the raised position corresponding to the base raised driving fixture 20, the rotation stops, the rotary pressing cylinder 1 moves away, and the rotation starts to enter the positioning process. Through the upper inductance pen 24 for detecting LVDT, when the part falls into the raised position of the base raised driving fixture 20, the inductance pen 24 detects the part at the set position. After the part is stuck in the positioning fixture, the height of the part drops, and the inductance pen 24 detects that the part changes from having a signal to having no signal, and the PLC determines that the positioning is successful.

[0039] The rotary positioning unit, once the part is locked into position, the spring sleeve 25 presses the part. The rotary motor 23 at the bottom drives the tooling base 9, the base protrusion drives the tooling 20 and the part back to zero, and the rotary clamping unit is raised and returns to the origin. The robot clamps the successfully scheduled parts into the equipment for processing, ensuring that each piece enters the equipment at the same posture and angle for processing.

[0040] Compared with the prior art, the utility model fundamentally eliminates the problem of equipment collision caused by deformation of shrapnel and failure of parts to be driven during the processing process, thereby improving the stability of the processing process.

Claims

1. An automatic pre-positioning device for cylindrical grinding, comprising a base plate, a lifter, a lift motor, a rotary clamping cylinder, an inductive pen, and a rotary motor, characterized in that: The bottom plate (4) is connected to a rotation positioning unit, a lift assembly is provided on the rear side of the rotation positioning unit, and a rotation clamping unit is provided on the upper side of the lift assembly; The rotary positioning unit includes a rotary motor, a tabletop, and a tool base. The bottom plate (4) is connected to the rotary motor (23). The drive shaft of the rotary motor (23) passes through the tabletop (18) and is connected to the bottom of the tool base (9). The top of the tool base (9) is connected to the base protrusion driving tool (20). The elevator assembly includes a transition plate, an elevator, and a lifting motor. The transition plate (10) is connected to the rear side of the base plate (4). The transition plate (10) is provided with an elevator (22). The lifting motor (21) is provided on the rear side of the elevator (22). The rotary clamping unit comprises a rotary pressing cylinder, a pressure rod, a Z-shaped bracket, an inductive pen, and a sleeve. The top of the lift (22) is connected to the bottom of the rotary pressing cylinder (1) by a cylinder transition plate (13). The top driving end of the rotary pressing cylinder (1) is connected to one end of the pressure rod (17). The middle of the pressure rod (17) is connected to one end of the inductive pen (24) by a Z-shaped bracket (2). The other end of the inductive pen (24) is connected to the sleeve (16).

2. The automatic pre-positioning device for cylindrical grinding according to claim 1, characterized in that: The base protrusion driving tool (20) is a cylindrical structure. The bottom of the base protrusion driving tool (20) is embedded in the upper part of the tool base (9). A cylindrical protrusion (20-1) is provided at the center of the top of the base protrusion driving tool (20), and positioning protrusions (20-2) are respectively provided on both sides of the cylindrical protrusion (20-1).

3. The automatic pre-positioning device for cylindrical grinding according to claim 1, characterized in that: Side panels (3) are provided on the left and right sides of the rotating motor (23), respectively. The side panels (3) are rectangular panel structures. The bottom of the side panels (3) is fixedly connected to the bottom plate (4), and the top of the side panels (3) is connected to the bottom of the desktop (18).

4. The automatic pre-positioning device for cylindrical grinding according to claim 1, characterized in that: Reflection brackets (19) are respectively provided on the left and right sides of the desktop (18). The reflection brackets (19) are rectangular panel structures, and waist-shaped holes are provided at the bottom of the reflection brackets (19).

5. The automatic pre-positioning device for cylindrical grinding according to claim 1, characterized in that: A motor transition plate (8) is sleeved on the output end of the lifting motor (21), and a motor protection plate (7) is provided on the outer side of the motor transition plate (8).

6. The automatic pre-positioning device for cylindrical grinding according to claim 5, characterized in that: The motor protection plate (7) is a "convex"-shaped frame structure.

7. The automatic pre-positioning device for cylindrical grinding according to claim 1, characterized in that: An elevator base (14) is provided on the left and right sides of the elevator (22), respectively. The elevator base (14) is an L-shaped structure. The bottom of the elevator base (14) is connected to the transition plate (10), and the upper part of the elevator base (14) is provided with a waist-shaped hole.

8. The automatic pre-positioning device for cylindrical grinding according to claim 1, characterized in that: The bottom of the Z-shaped bracket (2) is connected to the middle of the pressure rod (17), the top of the Z-shaped bracket (2) is a C-shaped notch structure, the opening of the C-shaped notch structure is connected to the clamping plate (11), and an inductor pen cover (5) is provided between the opening of the C-shaped notch structure and the clamping plate (11), and the inductor pen cover (5) is mounted on the top of the inductor pen (24).

9. The automatic pre-positioning device for cylindrical grinding according to claim 1, characterized in that: The middle part of the inductive pen (24) is sleeved with a nut (12), and the lower part of the inductive pen (24) passes through the other end of the pressure rod (17) and is connected to the sleeve (16); a spring sleeve (25) is provided at the top of the sleeve (16).

10. An automatic pre-positioning device for cylindrical grinding according to claim 1, 8 or 9, characterized in that: The inductance pen (24) is a LVDT inductance pen for detecting.

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