Machining positioning device for shaft workpieces

Abstract

The invention relates to the technical field of machining and positioning equipment, and provides a machining and positioning device for shaft workpieces, which comprises a base, an arched beam, a bracket, a bearing unit, a driving and sliding unit and a control unit, and is characterized in that the control unit is propped against the base in a sliding manner and forms a square-shaped movement track along the path of the arched beam; the control unit comprises a rod fork, and the rod fork is inserted into a shaft body hole to complete non-contact positioning and transferring. Through the square-shaped motion trail of the control unit and the positioning mode that the rod fork is inserted into the shaft body hole, direct contact with the outer surface of the workpiece is avoided, and indentation and scratch of the high-smoothness or coated shaft workpiece are effectively prevented.

Description

Technical Field

[0001] The invention relates to the technical field of machining positioning equipment, and in particular to a machining positioning device for shaft workpieces. Background Art

[0002] In the automated processing of tubular shaft workpieces, precise positioning and efficient transfer of workpieces are the core links to ensure processing quality. At present, the industry generally adopts the method of clamping the outer surface of the workpiece by V-blocks, pneumatic clamps and other devices for movement. This method is easy to cause indentations or scratches on the surface of the workpiece, especially for high-finish pipe fittings or coated workpieces, causing irreversible damage. Therefore, we propose a processing positioning device for shaft workpieces. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies of the prior art, the present invention provides a processing positioning device for shaft workpieces, which overcomes the deficiencies of the prior art, has a reasonable design, a compact structure, and solves the problems raised in the background technology.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A processing and positioning device for shaft workpieces includes a base, an arched beam, a bracket, a bearing unit, a driving sliding unit and a control unit, and is characterized in that: the control unit slides against the base and forms a "mouth"-shaped motion trajectory along the path of the arched beam, and the control unit includes a rod fork, which is inserted into the hole of the shaft body to complete non-contact positioning and transfer.

[0008] Preferably, the driving sliding unit comprises a first connecting rod, a second connecting rod, a frame, a cam, a motor, a cross bar and a sleeve, wherein the motor drives the cam to rotate, and controls the frame to drive the first connecting rod and the second connecting rod to cross and reciprocate.

[0009] Preferably, the control unit further comprises a horizontal bar, a guide column, a spring and a supporting column, wherein the guide column is sleeved in the sleeve, and two ends of the spring are respectively supported against the horizontal bar and the sleeve for resetting the control unit after being lifted.

[0010] Preferably, the bearing unit includes a bearing platform with a groove, a rotating column and a gear, and the steering unit includes a platform, an extension rod, an arc beam and a rack. The rack is engaged with the gear to drive the bearing platform to rotate, thereby realizing the end face conversion of the shaft.

[0011] Preferably, an arcuate beam is disposed in the path of the gear for lifting the rotating column to enable the rack to mesh with the gear.

[0012] Preferably, sleeves are connected to both ends of the crossbar, and the sleeves are slidably matched with the guide pillars to transmit the displacement of the driving sliding unit to the control unit.

[0013] Preferably, a ball head structure is provided at the end of the supporting column to reduce friction resistance when sliding on the base.

[0014] Preferably, the arched beam is convex in the middle and has smooth transitions on both sides, so as to lift the control unit and guide its lateral movement.

[0015] (III) Beneficial effects

[0016] The embodiment of the present invention provides a machining positioning device for shaft workpieces, which has the following beneficial effects:

[0017] 1. The "mouth"-shaped motion trajectory of the control unit and the positioning method of inserting the rod fork into the hole of the shaft body can avoid direct contact with the outer surface of the workpiece, effectively preventing indentations and scratches on high-finish or coated shaft workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 A partial schematic diagram of

[0020] Figure 3 A schematic diagram of a driving sliding unit of the present invention;

[0021] Figure 4 is a schematic diagram of a control unit of the present invention;

[0022] Figure 5 A further schematic diagram of the present invention;

[0023] Figure 6 It is a schematic diagram of the load-bearing unit and the steering unit of the present invention;

[0024] Figure 7 For the present invention Figure 5 Schematic diagram of .

[0025] In the figure: 1. base; 11. arched beam; 12. bracket; 2. driving sliding unit; 21. first connecting rod; 22. second connecting rod; 23. frame; 24. cam; 25. motor; 26. cross bar; 27. sleeve; 3. control unit; 31. cross bar; 32. guide column; 33. spring; 34. supporting column; 35. rod fork; 4. bearing unit; 41. bearing platform; 42. rotating column; 43. gear; 5. steering unit; 51. platform; 52. extension rod; 53. arc beam; 54. rack. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See attached Figure 1-4 , a processing and positioning device for shaft workpieces, comprising a base 1, and an arched beam 11, a bracket 12, and a bearing unit 4 arranged on the base 1, a pair of slots for accommodating the shaft body are opened on the bearing unit 4, and a control unit 3 is suspended on the base 1, and the control unit 3 slides against the base 1 and forms a "mouth"-shaped motion trajectory along the path of the arched beam 11. Since the arched beam 11 is convex in the middle and has smooth transitions on both sides, when the control unit 3 contacts the arched beam 11, the control unit 3 can be lifted upward;

[0028] The driving sliding unit 2 is also included on the bracket 12, and the driving sliding unit 2 includes a first connecting rod 21 slidingly arranged along the bracket 12, and a second connecting rod 22 slidingly arranged along the clamping fork on the first connecting rod 21. The motion trajectories of the first connecting rod 21 and the second connecting rod 22 are cross-arranged. The driving sliding unit 2 adopts a linkage design of a cam 24 and a cross connecting rod, that is, the first connecting rod 21 and the second connecting rod 22, and the motion is stable and controllable, which significantly improves the positioning accuracy of shaft workpieces. In this embodiment, a vertical cross is adopted, and the cross angle can be adaptively adjusted according to actual needs. One end of the second connecting rod 22 is connected to a frame 23, and the frame 23 is located on the top of a motor 25 installed on the bracket 12, and the output end of the motor 25 is also connected to a cam 24, and the cam 24 is located in the frame 23 to form a cam structure. When the motor 25 drives the cam 24 to rotate, the cam 24 will control the frame 23 to move first in the direction of the first connecting rod 21, and then in the direction of the second connecting rod 22, and so on.

[0029] The other end of the second connecting rod 22 is also connected to a cross bar 26 parallel to the first connecting rod 21, and the two ends of the cross bar 26 are connected to sleeves 27, which cooperate with the elastic control unit 3 to facilitate the control unit 3 to deform after the control unit 3 is lifted;

[0030] The control unit 3 includes two parallel horizontal bars 31 and guide columns 32 which are enclosed to form a frame structure, and the horizontal bars 31 and the guide columns 32 are fixedly connected, the sleeve 27 is sleeved on the guide column 32, and the cross bar 26 is located at the lower side of the top horizontal bar 31, that is, the guide column 32 can slide on the sleeve 27, and two ends are sleeved on the guide column 32 to respectively abut on the horizontal bar 31 and the sleeve 27, and a supporting column 34 is also connected to the bottom horizontal bar 31, and the supporting column 34 extends toward the base 1 and a ball head is connected to the end thereof to facilitate its sliding on the base 1, and a ball head structure is arranged at the end of the supporting column 34, which cooperates with the smooth transition of the arched beam 11, reduces sliding friction, and prolongs the service life of the device, and a rod fork 35 extending toward the direction of the carrying unit 4 is also connected to the top horizontal bar 31, which is convenient for the rod fork 35 Insert the hole of the shaft body to transfer the shaft body. The specific movement method is that when the driving sliding unit 2 controls the control unit 3 to make a "mouth" movement, the control unit 3 slides on the base 1, and when the supporting column 34 slides onto the arched beam 11, the supporting column 34 pushes the frame formed by the cross bar 31 and the guide column 32 to lift as a whole, and the sleeve 27 is sleeved on the guide column 32, that is, the height of the sleeve 27 remains unchanged, and the frame formed by the cross bar 31 and the guide column 32 can be lifted after the spring 33 contracts until it is reset, and when the rod fork 35 moves toward the direction of the bearing unit 4, the rod fork 35 is inserted into the hole of the shaft body, and the control unit 3 is lifted by the arched beam 11 and then moved horizontally to another groove body of the bearing unit 4. This method can avoid indentations or scratches on the surface of the workpiece.

[0031] See attached Figure 5-7 In order to improve the processing efficiency, especially for double-sided processing and testing, we set a bearing platform 41 embedded in the groove body in another groove body of the bearing unit 4, and the bottom of the bearing platform 41 is connected to a rotating column 42 extending downward, and a gear 43 is sleeved on the rotating column 42, and a ball head is set on the lower end surface of the gear 43;

[0032] A steering unit 5 is provided at the bottom of the gear 43 to abut against it. The bearing unit 4 and the steering unit 5 work together to realize automatic steering of the shaft body through the meshing of the rack 54 and the gear 43, support double-sided processing or detection, and greatly improve the processing efficiency. The steering unit 5 includes a platform 51, and an arc beam 53 is installed on the platform 51. The arc beam 53 is set on the path of the gear 43. One side of the platform 51 is connected to an extension rod 52 extending to the outside of the bearing unit 4 and connected to the second connecting rod 22. A strip groove is provided on the side wall to provide a sliding groove for the extension rod 52 and a support platform 51. A rack 54 is also connected to the other side of the platform 51. The rack 54 forms a height difference with the gear 43. When the second connecting rod 22 controls the platform 51 to slide horizontally through the extension rod 52, the arc beam 53 lifts the rotating column 42. At this time, the height of the rack 54 is consistent and corresponding to that of the gear 43 until the rack 54 and the gear 43 are meshed. When the second connecting rod 22 continues to move backward, it drives the support platform 41 to rotate, completing the conversion of the end face of the shaft body.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A processing and positioning device for shaft workpieces, comprising a base (1), an arched beam (11), a bracket (12), a bearing unit (4), a driving sliding unit (2) and a control unit (3), characterized in that: The control unit (3) slides against the base (1) and forms a "mouth"-shaped motion track along the path of the arched beam (11). The control unit (3) comprises a rod fork (35), and the rod fork (35) is inserted into the hole of the shaft body to complete non-contact positioning and transfer.

2. The processing and positioning device for shaft workpieces according to claim 1, characterized in that: The driving sliding unit (2) comprises a first connecting rod (21), a second connecting rod (22), a frame (23), a cam (24), a motor (25), a cross bar (26) and a sleeve (27); the motor (25) drives the cam (24) to rotate, and controls the frame (23) to drive the first connecting rod (21) and the second connecting rod (22) to cross and reciprocate.

3. The machining positioning device for shaft workpieces according to claim 1, characterized in that: The control unit (3) further comprises a horizontal bar (31), a guide column (32), a spring (33) and a supporting column (34); the guide column (32) is sleeved in the sleeve (27); two ends of the spring (33) are respectively supported on the horizontal bar (31) and the sleeve (27) for resetting the control unit (3) after being lifted.

4. The machining positioning device for shaft workpieces according to claim 1, characterized in that: The bearing unit (4) comprises a bearing platform (41) with a groove, a rotating column (42) and a gear (43); the steering unit (5) comprises a platform (51), an extension rod (52), an arc-shaped beam (53) and a rack (54); the rack (54) meshes with the gear (43) to drive the bearing platform (41) to rotate, thereby realizing the conversion of the end face of the shaft body.

5. The machining positioning device for shaft workpieces according to claim 4, characterized in that: The arc-shaped beam (53) is arranged on the path of the gear (43) and is used to lift the rotating column (42) so that the rack (54) is meshed with the gear (43).

6. The machining positioning device for shaft workpieces according to claim 2, characterized in that: The two ends of the crossbar (26) are connected to a sleeve (27), and the sleeve (27) and the guide column (32) are slidably matched to transmit the displacement of the driving sliding unit (2) to the control unit (3).

7. The machining positioning device for shaft workpieces according to claim 1, characterized in that: The end of the supporting column (34) is provided with a ball head structure, which is used to reduce friction resistance when sliding on the base (1).

8. The machining positioning device for shaft workpieces according to claim 1, characterized in that: The arched beam (11) is convex in the middle and has smooth transitions on both sides, and is used to lift the control unit (3) and guide its lateral movement.

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