Auxiliary clamping device for continuous machining of thin-wall ring workpiece

Abstract

The utility model discloses an auxiliary clamping device for continuous machining of a thin-wall ring workpiece. The auxiliary clamping device comprises a driving mechanism arranged in a machine tool and a clamping mechanism arranged on the driving mechanism and used for clamping the thin-wall ring workpiece. The driving mechanism comprises a longitudinal sliding rail arranged in the machine tool and perpendicular to the main shaft and a transverse sliding rail parallel to the main shaft. The clamping mechanism comprises an assembling block arranged on the transverse sliding rail, a driving air cylinder is arranged in the assembling block, and a pneumatic claw perpendicular to the axial direction of the driving air cylinder is further arranged at the piston end of the driving air cylinder. When the auxiliary clamping device is used for clamping a small-size thin-wall ring workpiece, the clamping mechanism is moved into a large-range space on the outer side of the main shaft through the driving mechanism, so that the small-size thin-wall ring workpiece can be conveniently clamped on the clamping mechanism, and then the thin-wall ring workpiece can be accurately arranged on the main shaft in a sleeving manner through the driving mechanism; the thin-wall ring workpiece can be machined through a machine tool cutter, and the problems that at present, when a small-size thin-wall ring is manually clamped, large difficulty exists, and potential safety hazards exist are effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of continuous processing of thin-walled annular workpieces, and in particular to an auxiliary clamping device for continuous processing of thin-walled annular workpieces. Background Art

[0002] The structure of the thin-walled ring workpiece is as shown in the attached manual. Figure 3 As shown, it can be used as a metal gasket in industrial assembly. When the thin-walled ring designed for the assembled equipment is not a conventional gasket of standard size, or the structural shape is a special-shaped part, it usually needs to be processed and formed separately.

[0003] When the thin-walled ring workpiece has a large size, the operator can clamp it by holding its side during continuous machining; when the size is small, such as the outer diameter is less than 20mm, it is difficult for the operator to effectively hold it firmly during machining, especially when clamping it to the machine tool spindle (the expansion sleeve spindle is usually used for ring workpiece processing, such as Figure 4-5 The structure shown needs to be manually sleeved outside the expansion sleeve, and the expansion core is contracted backward to achieve internal expansion and clamping of the thin-walled ring workpiece. In the process, in order to achieve rapid clamping of the workpiece by the expansion sleeve, a small gap is usually left between the inner diameter of the workpiece and the outer wall of the expansion sleeve. Therefore, when manually sleeveing ​​the workpiece, it is very easy to cause the workpiece and the expansion sleeve to deviate during sleeve installation, and after contacting the end of the expansion sleeve, it is easy to cause the workpiece to fall on the bottom surface of the machine tool. Therefore, for small-sized thin-walled ring workpieces, fast and effective clamping and assembly cannot be achieved during the clamping process, which affects the efficiency of continuous processing of the thin-walled ring workpiece. At the same time, manual alignment with the expansion sleeve for a long time is required, and there are certain safety hazards. Summary of the invention

[0004] In response to the above-mentioned problems, the present application aims to provide an auxiliary clamping device for continuous processing of thin-walled ring workpieces, which can achieve precise clamping of small-sized thin-walled ring workpieces and solve the current problem of great difficulty and safety hazards in manual clamping of small-sized thin-walled rings.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is as follows: an auxiliary clamping device for continuous processing of thin-walled ring workpieces, characterized in that: the auxiliary clamping device includes a driving mechanism arranged in a machine tool, the driving mechanism can be close to or far away from the machine tool spindle, and a clamping mechanism for clamping the thin-walled ring workpiece and in contact with the spindle is arranged on the driving mechanism.

[0006] Preferably, the driving mechanism includes a longitudinal slide rail arranged in the machine tool and perpendicular to the main axis and a transverse slide rail parallel to the main axis, and the clamping mechanism is arranged on the side close to the transverse slide rail and the main axis.

[0007] Preferably, the clamping mechanism comprises an assembly block arranged on a transverse slide rail, in which a driving cylinder is arranged, and a pneumatic claw perpendicular to the axial direction of the driving cylinder is also arranged at the piston end of the driving cylinder.

[0008] Preferably, arc-shaped plates contacting the side periphery of the thin-walled ring workpiece are detachably mounted on the adjacent end surfaces of the pneumatic claws, and a limiting portion is radially extended on the inner side of each arc-shaped plate.

[0009] Preferably, linear guide rods connected to the pneumatic claws are provided on both sides of the assembly block.

[0010] The beneficial effect of the present application is that when the auxiliary clamping device is clamping a small-sized thin-walled ring workpiece, the clamping mechanism is moved to a large space outside the main shaft through the driving mechanism, and it can be conveniently clamped on the clamping mechanism, and then the thin-walled ring workpiece can be accurately sleeved on the main shaft through the driving mechanism, and the thin-walled ring workpiece can be processed by machine tool tools, which effectively solves the problem of great difficulty and safety hazards in manual clamping of small-sized thin-walled rings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a top view of the internal structure of the machine tool.

[0012] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle.

[0013] Figure 3 This is a diagram of the thin-walled ring workpiece structure for this application.

[0014] Figure 4 The picture shows a thin-walled ring workpiece being manually mounted on the expansion sleeve spindle.

[0015] Figure 5 for Figure 4 Enlarged view of the structure at point B.

[0016] Figure 6 This is a top view of the auxiliary clamping device and machine tool assembly for this application.

[0017] Figure 7 For this application Figure 6 Enlarged view of the structure at point C in the middle.

[0018] Figure 8 This is an enlarged structural diagram of the clamping mechanism of this application.

[0019] Fig. 9 This is a diagram showing the corresponding displacement of the clamping mechanism and the axial direction of the expansion sleeve spindle in this application.

[0020] Fig.10 For this application Fig. 9 Enlarged diagram of the structure at point D in the middle.

[0021] Fig.11 This is a front view of the pneumatic claw structure of this application.

[0022] Fig.12 For this application Fig.11 Side view of the structure.

[0023] In the figure: 8-machine tool; 81-expansion sleeve spindle; 9-thin-walled ring workpiece. DETAILED DESCRIPTION

[0024] In order to enable ordinary technicians in the field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0025] See attached Figures 1 to 12 An auxiliary clamping device for continuous processing of thin-walled ring workpieces is shown, and the auxiliary clamping device includes a driving mechanism arranged in a machine tool, and the driving mechanism can be close to or far from the main shaft of the machine tool, and a clamping mechanism for clamping the thin-walled ring workpiece and contacting the main shaft is arranged on the driving mechanism. When clamping a small-sized thin-walled ring workpiece, the clamping mechanism is first moved to a large space outside the main shaft by the driving mechanism, and the thin-walled ring workpiece can be conveniently clamped on the clamping mechanism at this position, and then the clamping mechanism and the thin-walled ring workpiece are moved to a position corresponding to the main shaft axis by the driving mechanism, and then the thin-walled ring workpiece can be accurately sleeved on the main shaft by the axial movement of the clamping mechanism, and then the expansion sleeve of the main shaft is clamped, and the clamping mechanism is reversely reset, and the thin-walled ring workpiece can be processed by the machine tool tool. After the processing is completed, the driving mechanism drives the clamping mechanism to clamp the workpiece on the expansion sleeve again, and shift in the opposite direction to achieve unloading, and then perform the clamping and unloading operations on the next workpiece to be processed again. This cycle can realize the continuous clamping processing of thin-walled ring workpieces, solving the current problem of great difficulty and safety hazards in manual clamping of small-sized thin-walled rings.

[0026] Specifically, Figure 6-7 As shown, the driving mechanism includes a longitudinal slide rail 1 arranged in the machine tool and perpendicular to the main axis and a transverse slide rail 2 parallel to the main axis. The longitudinal slide rail 1 and the transverse slide rail 2 are preferably electric drive slide rail structures and integrated in the machine tool processing system to realize linkage with the processing of the machine tool. For example, after the machine tool spindle stops, the transverse slide rail 2 moves on the longitudinal slide rail 1 to shift the clamped workpiece to correspond to the spindle axis to wait for the workpiece to be clamped. After the workpiece is clamped, the transverse slide rail 2 is reset in the reverse direction, and then the spindle rotates and the tool moves to process the workpiece.

[0027] The clamping mechanism is arranged on the side close to the transverse slide rail 2 and the main shaft. The workpiece is aligned with the main shaft axis through the sliding of the transverse slide rail 2 and the workpiece is mounted on the main shaft to achieve accurate mounting of the workpiece.

[0028] Specifically, Figure 7-8 As shown, the clamping mechanism includes an assembly block 3 arranged on a transverse slide rail 2, in which a driving cylinder 4 is arranged, and a pneumatic claw 5 perpendicular to its axial direction is also arranged at the piston end of the driving cylinder 4. When the transverse slide rail 2 moves the pneumatic claw 5 to the outside of the spindle, the thin-walled ring workpiece is manually placed in the pneumatic claw 5, and then clamped in the up and down directions by the pneumatic claw 5, and then the transverse slide rail 2 moves the workpiece to the same axis as the spindle, and then the workpiece clamped by the pneumatic claw 5 is set on the expansion sleeve that has not expanded outward by extending the driving cylinder 4, and then the expansion sleeve expands outward to clamp the workpiece, and the pneumatic claw 5 is released and reset through the transverse slide rail 2. After the processing is completed, the workpiece is unloaded with the same action to achieve a single clamping and processing of the thin-walled ring workpiece.

[0029] To adapt to the clamping operation of thin-walled ring workpieces with different outer diameters and shapes, such as Fig.12 As shown, the pneumatic claw 5 has an arc-shaped plate 6 detachably mounted on the adjacent end faces thereof, which contacts the side periphery of the thin-walled ring workpiece. The arc-shaped plate 6 can be processed into an adaptive structure according to the size and shape of the processed thin-walled ring, and is preferably assembled in the pneumatic claw 5 by means of a top screw, thereby improving the applicability of the clamping device.

[0030] In order to realize the axial limit of the workpiece on the pneumatic claw 5, as Fig.12 As shown, a limiting portion 61 is radially extended on the inner side of each arc-shaped plate 6. During operation, after the pneumatic claw 5 is released, the workpiece is manually placed in such a way that one side wall is flush with the limiting portion 61, and then after the pneumatic claw 5 is clamped, the axial positioning of the workpiece can be achieved, thereby improving the clamping speed and ensuring the processing accuracy (after achieving axial positioning, the tool setting operation of each clamped workpiece is not required, which can greatly improve the efficiency of continuous processing).

[0031] When the thin-walled ring workpiece is of a special-shaped structure, in the process of putting it on the expansion sleeve by driving the cylinder 4 to move axially, in order to avoid the circumferential deflection of the piston rod affecting the clamping accuracy of the workpiece, Figure 8 As shown, linear guide rods 7 connected to the pneumatic claws 5 are also provided on both sides of the assembly block 3. When the piston rod of the driving cylinder 4 is extended, its circumferential deflection can be limited, thereby ensuring the position accuracy of the workpiece clamping and further ensuring the processing accuracy of the workpiece.

[0032] The principle of the present application is: when clamping a thin-walled ring workpiece, first the machine tool controls the transverse slide 2 to move the pneumatic claw 5 to the outside of the spindle, manually place the thin-walled ring workpiece in the pneumatic claw 5, and make the inner side of the workpiece flush with the limit part 61, and then clamp it in the up and down direction by the pneumatic claw 5, then the transverse slide 2 moves the workpiece to the same axis as the spindle, and then the workpiece sleeve clamped by the pneumatic claw 5 is set on the expansion sleeve that has not expanded outward by extending the driving cylinder 4, and then the expansion sleeve expands outward to clamp the workpiece, and the pneumatic claw 5 is released and reset through the transverse slide 2, and the thin-walled ring workpiece can be processed by the machine tool tool. After the processing is completed, the workpiece is unloaded with the same action to achieve a single clamping and processing of the thin-walled ring workpiece.

[0033] The above shows and describes the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected.

Claims

1. An auxiliary clamping device for continuous processing of thin-walled ring workpieces, characterized in that: The auxiliary clamping device comprises a driving mechanism arranged in a machine tool, the driving mechanism can correspond closely to or be far away from the main shaft of the machine tool, and a clamping mechanism for clamping a thin-walled ring workpiece and contacting the main shaft is arranged on the driving mechanism.

2. The auxiliary clamping device according to claim 1, characterized in that: The driving mechanism comprises a longitudinal slide rail (1) arranged in the machine tool and perpendicular to the main axis, and a transverse slide rail (2) parallel to the main axis, and the clamping mechanism is arranged on the side close to the transverse slide rail (2) and the main axis.

3. The auxiliary clamping device according to claim 2, characterized in that: The clamping mechanism comprises an assembly block (3) arranged on a transverse slide rail (2), a driving cylinder (4) being arranged inside the assembly block, and a pneumatic claw (5) perpendicular to the axial direction of the driving cylinder (4) being arranged at the piston end of the driving cylinder (4).

4. The auxiliary clamping device according to claim 3, characterized in that: The adjacent end surfaces of the pneumatic claws (5) are detachably equipped with arc plates (6) that contact the side periphery of the thin-walled ring workpiece, and a limiting portion (61) radially extends inside each arc plate (6).

5. The auxiliary clamping device according to claim 4, characterized in that: Linear guide rods (7) connected to the pneumatic claws (5) are also provided on both sides of the assembly block (3).

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