Traction rod turning device

Abstract

The invention relates to a traction rod turning machining device which comprises a connecting disc, a clamping mechanism, a supporting mechanism and a balance weight mechanism. The number of the clamping mechanisms is two, each clamping mechanism comprises a pressing plate and a fastening bolt, a fastening threaded hole matched with the fastening bolt is formed in the connecting disc, a through hole is formed in the pressing plate, the fastening bolt penetrates through the through hole in the pressing plate and then is screwed into the fastening threaded hole, and the pressing plates of the two clamping mechanisms press the disc end of the draw bar workpiece when moving downwards. The supporting mechanism is installed on the connecting disc, matched with the gear ring end of the draw bar workpiece and used for supporting and fixing the draw bar workpiece. The balance weight mechanism is installed on the connecting disc and used for adjusting the gravity center of the machining device. Compared with the prior art, the clamping device is high in efficiency, low in cost, free of manual adjustment of clamping force, convenient and efficient, one-time clamping is achieved through the tool in the whole turning process, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to a processing device, in particular to a drawing rod turning processing device. Background Art

[0002] As an important process equipment, machine tool fixture plays a very important role in the mechanical manufacturing process. Its design should not only ensure the processing quality of the workpiece, improve processing efficiency, reduce costs, and be safe and convenient during operation and maintenance, but also pay attention to the standardization of the fixture structure and the precision of fixture manufacturing.

[0003] In the transmission mechanism, eccentric parts such as eccentric workpieces or crankshafts are generally used to complete the function of converting rotary motion into reciprocating motion. Therefore, eccentric parts are widely used in mechanical transmission. The traction rod is an eccentric workpiece, and its axis is parallel but not coincident with the axis.

[0004] For such small batch parts, four-jaw chucks and homemade jaws are generally used as fixtures on ordinary lathes. However, this clamping method is complicated to align and adjust, and it is difficult for operators to control the clamping force of the jaws at the clamping radial position. If the clamping force is too small, the workpiece is not clamped firmly and it is easy to loosen during processing, leading to dangerous accidents; if the clamping force is too large, the workpiece will be deformed, making it difficult to ensure the processing accuracy of the workpiece.

[0005] In order to process the outer circle of eccentric workpieces with high efficiency and high precision, a special fixture must be designed. Summary of the invention

[0006] The purpose of the present invention is to provide a traction rod turning processing device in order to overcome the defects of the above-mentioned prior art, so that the placement of the workpiece is more convenient, the stability of the processing process is higher, and it has the advantages of stable turning size, convenient workpiece placement, and high production efficiency.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A drawbar turning device comprises a connecting plate, a clamping mechanism, a supporting mechanism and a counterweight mechanism;

[0009] There are two clamping mechanisms, including a pressure plate and a fastening bolt. The connecting plate is provided with a fastening threaded hole adapted to the fastening bolt. The pressure plate is provided with a through hole. The fastening bolt passes through the through hole on the pressure plate and is screwed into the fastening threaded hole. When the pressure plates of the two clamping mechanisms move downward, they press the disc end of the traction rod workpiece.

[0010] The support mechanism is installed on the connecting plate and cooperates with the gear ring end of the traction rod workpiece to support and fix the traction rod workpiece;

[0011] The counterweight mechanism is mounted on the connecting plate and is used to adjust the center of gravity of the processing device.

[0012] Furthermore, the counterweight mechanism includes a counterweight block and a fixing bolt, the counterweight block is provided with an arc-shaped waist hole, the connecting plate is provided with a plurality of fixing threaded holes adapted to the fixing bolt, and the fixing bolt passes through the arc-shaped waist hole on the counterweight block and is screwed into a fixing threaded hole on the connecting plate.

[0013] Furthermore, the plurality of fixing threaded holes are distributed along the outer circumference of the connecting plate.

[0014] Furthermore, the supporting mechanism includes an auxiliary supporting plate, an auxiliary plate and a supporting bolt. The auxiliary supporting plate is installed on the connecting plate. The auxiliary supporting plate is provided with a supporting threaded hole adapted to the supporting bolt. The auxiliary plate is provided with an opening. The supporting bolt passes through the opening on the auxiliary plate and the center through hole of the gear ring end of the traction rod workpiece and is then screwed into the supporting threaded hole.

[0015] Furthermore, the pressure plate is L-shaped, including a horizontal part and a vertical part, and the clamping mechanism also includes a limiting guide groove, which is installed on the connecting plate. The vertical part of the pressure plate is slidably connected to the limiting guide groove, and the horizontal part of the pressure plate is used to press the disc end of the traction rod workpiece.

[0016] Furthermore, the connecting plate is provided with a connecting portion for connecting to a flange of a machining center.

[0017] Furthermore, the connecting portion includes a plurality of connecting holes.

[0018] Furthermore, the through hole on the pressing plate is arranged on the horizontal part of the L-shaped structure.

[0019] Furthermore, the number of the fixing threaded holes is 3.

[0020] Furthermore, the plurality of fixing threaded holes are distributed at equal intervals along the outer circle of the connecting plate.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) High efficiency and low cost. No need to manually adjust the holding force, which is convenient and efficient. The entire turning process is clamped once by the tooling, which greatly improves work efficiency.

[0023] (2) Good stability, high processing accuracy, and enhanced safety. Compared with the previous four-jaw manual clamping, the improved clamping mechanism and support mechanism can accurately position and clamp, and the configuration mechanism eliminates the eccentricity and dimensional instability caused by human operation. Therefore, the turning processing has good dimensional stability and high dimensional accuracy.

[0024] (3) The clamping mechanism includes a limiting guide groove, and the pressure plate is an L-shaped pressure plate, which is used in conjunction with the limiting guide groove to ensure the accuracy of the position. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of clamping a workpiece according to the present invention;

[0026] Figure 2 This is a schematic diagram of the workpiece after processing;

[0027] Figure 3 It is a schematic diagram and cross-sectional diagram of the workpiece after the previous processing;

[0028] Figure 4 It is a schematic diagram and cross-sectional diagram of the workpiece after the previous processing;

[0029] Figure 5 A top view of a clamped workpiece according to the present invention;

[0030] Figure 6 It is a cross-sectional view of a clamped workpiece according to the present invention;

[0031] Reference numerals: 100, disc end, 200, gear ring end, 300, end face center hole;

[0032] 1. Connecting plate, 2. Pressing plate, 3. Fastening bolts, 4. Limiting guide groove, 5. Counterweight, 6. Fixing bolts, 7. Auxiliary supporting plate, 8. Auxiliary plate, 9. Supporting bolts, 10. Workpiece, 11. Connecting hole. DETAILED DESCRIPTION

[0033] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given. Obviously, the described embodiment is only an embodiment of a part of the present invention, not all embodiments, and the protection scope of the present invention is not limited to the following embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0034] In the drawings, components with the same structure are indicated by the same numerical reference numerals, and components with similar structures or functions are indicated by similar numerical reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer and show the matching relationship between the various components, some parts in the drawings are appropriately scaled, and the distance between the components is increased or decreased.

[0035] In the description of the embodiments of the present application, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the application are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0037] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] Embodiment 1:

[0039] A drawbar turning device, such as Figure 1 , Figure 5 As shown, it includes a connecting disk 1, a clamping mechanism, a supporting mechanism and a counterweight mechanism; there are two clamping mechanisms, including a pressure plate 2 and a fastening bolt 3, the connecting disk 1 is provided with a fastening threaded hole adapted to the fastening bolt 3, the pressure plate 2 is provided with a through hole, the fastening bolt 3 passes through the through hole on the pressure plate 2 and is screwed into the fastening threaded hole, and the pressure plates 2 of the two clamping mechanisms press the disc end 100 of the traction rod workpiece 10 when moving downward; the supporting mechanism is installed on the connecting disk 1, and cooperates with the gear ring end 200 of the traction rod workpiece 10 to support and fix the traction rod workpiece 10; the counterweight mechanism is installed on the connecting disk 1, and is used to adjust the center of gravity of the processing device.

[0040] Among them, the connecting plate 1 is connected to the lathe spindle flange, and a connecting portion is provided on the connecting plate 1 for connecting to the machining center flange. In the embodiment of the present application, the connecting portion includes a plurality of connecting holes 11, so as to connect to the CNC lathe spindle flange.

[0041] After the processing, the workpiece 10 is as follows Figure 2 The top view and cross-sectional view of the unprocessed workpiece 10 are shown in FIG. Figure 3 , Figure 4After the previous processing, the ring gear end 200 of the traction rod workpiece 10 has been drilled. In this process, the disc end 100 of the workpiece 10 needs to be turned into an inner spherical shape. Figure 3 As shown, the disc end is a solid, and the center hole 300 of the end face has been reserved in the center. The workpiece 10 is placed on the connecting disc 1, and the center position is located with the lathe's center. The positioning state is maintained, and the fastening bolts 3 in the clamping mechanism are tightened to drive the pressure plate 2 to clamp the workpiece 10, and then the center is withdrawn. After completing the positioning and clamping, the support mechanism is used to clamp one end of the gear ring of the workpiece 10 to prevent the workpiece 10 from shaking during the processing. The configuration mechanism is installed on the connecting disc 1 to adjust the center of gravity of the entire device, increase the stability of the tooling, and prevent eccentricity caused by stress concentration during turning.

[0042] Among them, the counterweight mechanism includes a counterweight block 5 and a fixing bolt 6. The counterweight block 5 is installed on the connecting disk in a manner that the position can be adjusted (annular groove). Specifically, the counterweight block 5 is provided with an arc-shaped waist hole, and the connecting disk 1 is provided with a plurality of fixing threaded holes adapted to the fixing bolt 6. The fixing bolt 6 passes through the arc-shaped waist hole on the counterweight block 5 and is screwed into a fixing threaded hole on the connecting disk 1. The plurality of fixing threaded holes are distributed along the outer circle of the connecting disk 1, and the fixing threaded holes can be distributed at equal intervals to be more stable. In the embodiment of the present application, the number of the fixing threaded holes is 3. When adjusting the position of the counterweight block 5, loosen the fixing bolt 6, move the counterweight block 5 to a suitable position, and then tighten the fixing screw to lock the counterweight block 5 on the connecting disk 1.

[0043] The supporting mechanism includes an auxiliary supporting plate 7, an auxiliary plate 8 and a supporting bolt 9. The auxiliary supporting plate 7 is mounted on the connecting plate 1. The auxiliary supporting plate 7 is provided with a supporting threaded hole adapted to the supporting bolt 9. The auxiliary plate 8 is provided with an opening. The supporting bolt 9 passes through the opening on the auxiliary plate 8 and the central through hole of the gear ring end of the traction rod workpiece 10 and then screws into the supporting threaded hole. The auxiliary supporting plate 7 is mainly used to place the workpiece 10 and cooperates with the auxiliary plate 8 to lock one end of the workpiece 10 to prevent the workpiece 10 from being inconvenient to fix.

[0044] like Figure 6 As shown, in the clamping mechanism, the pressure plate 2 is L-shaped, including a horizontal portion and a vertical portion. The clamping mechanism also includes a limiting guide groove 4, which is installed on the connecting plate 1. The vertical portion of the pressure plate 2 is slidably connected to the limiting guide groove 4, and the horizontal portion of the pressure plate 2 is used to press the disc end of the traction rod workpiece 10. The L-shaped pressure plate 2 is stuck in the inner width of the limiting guide groove 4, and then the bolts 3 are tightened to fix the L-shaped pressure plate 2 on the connecting plate 1, and the horizontal portion of the L-shaped pressure plate 2 presses the workpiece 10 to limit the degree of freedom of the workpiece 10. In the embodiment of the present application, the through hole on the pressure plate 2 is set in the horizontal portion of the L-shaped structure.

[0045] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A drawbar turning device, characterized in that: It includes a connecting plate, a clamping mechanism, a supporting mechanism and a counterweight mechanism; There are two clamping mechanisms, including a pressure plate and a fastening bolt. The connecting plate is provided with a fastening threaded hole adapted to the fastening bolt. The pressure plate is provided with a through hole. The fastening bolt passes through the through hole on the pressure plate and is screwed into the fastening threaded hole. When the pressure plates of the two clamping mechanisms move downward, they press the disc end of the traction rod workpiece. The support mechanism is installed on the connecting plate and cooperates with the gear ring end of the traction rod workpiece to support and fix the traction rod workpiece; The counterweight mechanism is mounted on the connecting plate and is used to adjust the center of gravity of the processing device.

2. A drawbar turning device according to claim 1, characterized in that: The counterweight mechanism includes a counterweight block and a fixing bolt. The counterweight block is provided with an arc-shaped waist hole. The connecting plate is provided with a plurality of fixing threaded holes adapted to the fixing bolt. The fixing bolt passes through the arc-shaped waist hole on the counterweight block and is screwed into a fixing threaded hole on the connecting plate.

3. A drawbar turning device according to claim 2, characterized in that: The plurality of fixing threaded holes are distributed along the outer circumference of the connecting plate.

4. A drawbar turning device according to claim 1, characterized in that: The supporting mechanism includes an auxiliary supporting plate, an auxiliary plate and supporting bolts. The auxiliary supporting plate is installed on the connecting plate. The auxiliary supporting plate is provided with a supporting threaded hole adapted to the supporting bolt. The auxiliary plate is provided with an opening. The supporting bolt passes through the opening on the auxiliary plate and the center through hole of the gear ring end of the traction rod workpiece and is then screwed into the supporting threaded hole.

5. The drawbar turning device according to claim 1, characterized in that: The pressure plate is L-shaped and includes a horizontal portion and a vertical portion. The clamping mechanism also includes a limiting guide groove, which is installed on the connecting plate. The vertical portion of the pressure plate is slidably connected to the limiting guide groove, and the horizontal portion of the pressure plate is used to press the disc end of the traction rod workpiece.

6. The drawbar turning device according to claim 1, characterized in that: The connecting plate is provided with a connecting portion for connecting with a flange plate of a machining center.

7. A drawbar turning device according to claim 6, characterized in that: The connecting portion includes a plurality of connecting holes.

8. The drawbar turning device according to claim 5, characterized in that: The through holes on the pressing plate are arranged on the horizontal part of the L-shaped structure.

9. The drawbar turning device according to claim 2, characterized in that: The number of the fixing threaded holes is 3.

10. The drawbar turning device according to claim 3, characterized in that: The plurality of fixing threaded holes are distributed at equal intervals along the outer circle of the connecting plate.

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