Worm and gear and inclined plane combination device for radial feeding of inner spinning roller in roller spinning

Abstract

A worm and gear and slope combination device for radial feeding of an inner spinning roller in roller spinning comprises a middle stand column, the bottom end of the middle stand column is perpendicularly connected to a worm and gear cover, and the worm and gear cover is connected to a bottom plate; a shaft shoulder at the upper end of the middle stand column is connected with an inner spinning roller frame, the upper end of the inner spinning roller frame is connected with an inner spinning roller frame upper pressing block and an inner spinning roller frame upper pressing block cover plate, and the inner spinning roller frame upper pressing block cover plate is connected with the top end of the middle stand column. The inner spinning roller frame is connected with a plurality of inner spinning roller shafts through guide rails, the inner spinning roller shafts are connected with inner spinning rollers, wedge-shaped blocks are inserted in gaps between inclined planes machined on the inner spinning roller shafts and the inner spinning roller frame in the axial direction, and the wedge-shaped blocks are installed on the wedge-shaped block frame; the wedge block frame is in threaded connection with the upper end of the feed screw, and the lower end of the feed screw is in threaded connection with the worm gear to form a screw-nut pair; a feeding lead screw is mounted in the middle stand column, and a servo motor and a speed reducer output shaft which are mounted outside a worm and gear cover are connected with a worm; the radial size of the inner spinning roller frame is reduced, and the motor control is simple.

Description

Technical Field

[0001] The invention belongs to the technical field of spinning processing, and in particular relates to a worm gear and inclined surface combination device for radial feeding of a wheel spinning inner wheel. Background Art

[0002] Wheel spinning is a powerful spinning technology developed on the basis of core mold spinning. It uses an inner wheel to replace the core mold, and the inner and outer wheels process the inner and outer surfaces of the tube blank at the same time. Wheel spinning uses multiple pairs of inner and outer wheels to process the inner and outer sides of the workpiece at the same time. Compared with the traditional core mold spinning method, wheel spinning uses an inner wheel to replace the core mold, which effectively improves the flexibility of the process, saves the cost of spinning mold manufacturing and tooling, significantly improves the internal stress state of the workpiece, and improves the surface quality of the workpiece. The wheel spinning equipment can change the position of the wheel through the inner wheel radial feed mechanism and the outer wheel radial feed mechanism to achieve flexible processing of cylindrical parts with different diameters and wall thicknesses.

[0003] The patent application entitled "A large-cylinder active high-force flexible spinning equipment for wheels" (publication number: CN116140447A) discloses an inner wheel radial feed mechanism. The inner wheel radial feed mechanism uses a motor to drive a nut-screw mechanism to push the inner wheel seat to complete the inner wheel radial feed. The disadvantage of the inner wheel radial feed mechanism is that the nut-screw transmission mechanism adopts a radial arrangement, which will greatly increase the radial size of the inner wheel frame; and each inner wheel radial feed mechanism requires a motor drive, and the motor is located at the top of the spinning equipment, resulting in the disadvantages of complex motor operation control and difficult installation. The patent application entitled “A special-shaped wheel spinning machine” (publication number: CN115229017A) and the patent application entitled “A fully hydraulic wheel master-slave high-power spinning device” (publication number: CN116441395B) respectively use a spiral three-way linkage mechanism and a gear rack mechanism to achieve radial feeding of the inner wheel, both of which effectively reduce the number of drive motors. However, since the main transmission mechanism is still radially arranged, the problem of excessive radial size of the inner wheel frame is not effectively solved, and the processing requirements of small inner diameter cylinders cannot be met. Summary of the invention

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a worm gear and inclined plane combination device for radial feed of the inner rotating wheel of the wheel spinning, which can reduce the radial size of the inner rotating wheel frame as much as possible, and at the same time use a single motor at the bottom to drive the radial feed of all the inner rotating wheels. It has the advantages of simple motor control system and easy installation, and meets the processing requirements of small inner diameter cylinders.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A worm gear and inclined plane combination device for radial feeding of a wheel spinning inner wheel, comprising an intermediate column 105, the bottom end of the intermediate column 105 is vertically connected to a worm gear cover 106, and the worm gear cover 106 is connected to a bottom plate 107; an inner wheel frame 109 is connected to the stepped shoulder at the upper end of the intermediate column 105, an inner wheel frame upper pressure block 116 is connected to the upper end of the inner wheel frame 109, an inner wheel frame upper pressure block cover plate 112 is connected to the upper end of the inner wheel frame upper pressure block 116, and the inner wheel frame upper pressure block cover plate 112 is connected to the top end of the intermediate column 105;

[0007] The inner wheel frame 109 is connected to a plurality of inner wheel shafts 103 via guide rails, and the inner wheel shafts 103 slide radially in the guide rails of the inner wheel frame 109; the inner wheel shafts 103 are connected to the inner wheel 104, and an inclined surface is processed on the inner wheel shaft 103, and a wedge block 110 is axially inserted into the gap between each inclined surface and the inner wheel frame 109, and the wedge block 110 is installed on the wedge block frame 101;

[0008] The wedge block frame 101 is threadedly connected to the upper end of the feed screw 113, and the lower end of the feed screw 113 is threadedly connected to the worm wheel 117 to form a screw-nut pair; the feed screw 113 is installed in the internal hole of the middle column 105, and the worm wheel 117 and the worm 114 transmission mechanism are installed in the worm wheel cover 106, and a servo motor and a reducer 108 are installed outside the worm wheel cover 106, and the output shaft of the servo motor and the reducer 108 is connected to the worm 114.

[0009] A screw anti-rotation block 115 is connected to the lower part of the bottom plate 107 , a guide surface is provided at the bottom of the feed screw 113 , and the screw anti-rotation block 115 is cooperatively connected with the guide surface at the bottom of the feed screw 113 .

[0010] The wedge block frame 101 is connected with wedge block pads, and radial feeding of the inner wheel 104 in different ranges can be achieved by adjusting the number of wedge block pads.

[0011] The end of the wedge block frame 101 is connected to a wedge block baffle 111 to prevent the wedge block 110 from sliding out of the wedge block frame 101 .

[0012] A spring 102 is connected between the hypotrochoid shaft 103 and the hypotrochoid frame 109 to achieve the retraction of the hypotrochoid shaft 103 .

[0013] There are four hypotrochoid axles 103 , and the four hypotrochoid axles 103 are evenly distributed on the hypotrochoid frame 109 around the axis of the hypotrochoid frame 109 .

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) Since the main transmission components for driving the radial feeding of the hypotrochanter are arranged axially, the axial movement of the main transmission components is converted into the radial feeding of the hypotrochanter, so the overall radial size of the hypotrochanter carrier is greatly reduced;

[0016] (2) Since the servo motor and reducer of the present invention are located at the bottom of the device and are driven by a single motor, the problem of complex motor control system and difficult installation is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0018] Figure 2 is a cross-sectional view of an embodiment of the present invention.

[0019] Figure 3 It is a schematic structural diagram of a lead screw anti-rotation block according to an embodiment of the present invention.

[0020] Figure 4 Schematic diagram of the structure of the inner wheel shaft according to an embodiment of the present invention.

[0021] Figure 5 It is a schematic structural diagram of an inner rotating wheel frame according to an embodiment of the present invention.

[0022] Figure 6 It is a schematic structural diagram of the middle column in an embodiment of the present invention.

[0023] In the figure: 101-wedge block frame; 102-spring; 103-inner rotating wheel shaft; 104-inner rotating wheel; 105-middle column; 106-worm gear cover; 107-bottom plate; 108-servo motor and reducer; 109-inner rotating wheel frame; 110-wedge block; 111-wedge block baffle; 112-inner rotating wheel frame upper pressure block cover plate; 113-feed screw; 114-worm; 115-screw anti-rotation block; 116-inner rotating wheel frame upper pressure block; 117-worm wheel. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments and drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Reference Figure 1-Figure 6A worm gear and inclined plane combination device for radially feeding the inner wheel of the wheel spinning press comprises an intermediate column 105, the bottom end of the intermediate column 105 is vertically connected to the worm gear cover 106, the worm gear cover 106 is connected to the bottom plate 107, the intermediate column 105 is connected to the inner wheel frame 109 at the stepped shoulder at the upper end, the inner wheel frame 109 is connected to the inner wheel frame upper pressure block 116 at the upper end, the inner wheel frame upper pressure block cover plate 112 is connected to the inner wheel frame upper pressure block cover plate 112 and the inner wheel frame upper pressure block cover plate 112 is bolted to the top end of the intermediate column 105.

[0026] The inner wheel frame 109 is connected to multiple inner wheel shafts 103 through guide rails, and the inner wheel shafts 103 slide radially in the guide rails of the inner wheel frame 109; the inner wheel shafts 103 are connected to the inner wheel 104, and the inner wheel shafts 103 are processed with inclined surfaces. A wedge block 110 is axially inserted into the gap between each inclined surface and the inner wheel frame 109, and the wedge block 110 is installed on the wedge block frame 101.

[0027] The threaded hole of the wedge block frame 101 is threadedly connected to the upper end of the feed screw 113, and the lower end of the feed screw 113 is threadedly connected to the threaded hole of the worm wheel 117 to form a screw-nut pair; the feed screw 113 is installed in the internal hole of the middle column 105, and the worm wheel 117 and the worm 114 transmission mechanism are installed in the worm wheel cover 106, and a servo motor and a reducer 108 are installed outside the worm wheel cover 106, and the output shaft of the servo motor and the reducer 108 is connected to the worm 114.

[0028] A screw anti-rotation block 115 is connected to the lower part of the bottom plate 107 , a guide surface is provided at the bottom of the feed screw 113 , and the screw anti-rotation block 115 is cooperatively connected with the guide surface at the bottom of the feed screw 113 .

[0029] The wedge block frame 101 is connected with wedge block pads, and radial feeding of the inner wheel 104 in different ranges can be achieved by adjusting the number of wedge block pads.

[0030] The end of the wedge block frame 101 is connected to a wedge block baffle 111 to prevent the wedge block 110 from sliding out of the wedge block frame 101 .

[0031] A spring 102 is connected between the hypotrochoid shaft 103 and the hypotrochoid frame 109 to achieve the retraction of the hypotrochoid shaft 103 .

[0032] There are four hypotrochoid axles 103 , and the four hypotrochoid axles 103 are evenly distributed on the hypotrochoid frame 109 around the axis of the hypotrochoid frame 109 .

[0033] The working principle of the present invention is as follows: when the inner wheel 104 is radially fed along the workpiece, the servo motor and the reducer 108 drive the worm 114 to rotate, and the rotation of the worm 114 causes the worm wheel 117 to rotate. The worm wheel 117 is internally processed with threads and forms a screw-nut pair with the feed screw 113. The rotation of the worm wheel 117 drives the feed screw 113 to move axially, and then drives the wedge block 110 installed on the upper end of the feed screw 113 to move axially. The inclined surface of the wedge block 110 cooperates with the inclined surface on the inner wheel shaft 103, so that the axial movement of the wedge block 110 is converted into the radial displacement of the inner wheel shaft 103 along the guide rail of the inner wheel frame 109, thereby realizing the radial feeding of the inner wheel 104.

[0034] In order to meet the processing requirements of cylinders with different diameters, wedge blocks are designed, and different feeding ranges can be achieved by adjusting the number of wedge blocks. In addition, the wedge block 110 realizes the radial outward feeding of the inner wheel shaft 103, and the retraction of the inner wheel shaft 103 is achieved by the spring 102 installed on the inner wheel frame 109 and the inner wheel shaft 103.

[0035] The above descriptions are merely embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related system fields, are also included in the protection scope of the present invention.

Claims

1. A worm gear and inclined plane assembly device for radial feeding of a wheel-pressing inner wheel, comprising an intermediate column (105), characterized in that: The bottom end of the middle column (105) is vertically connected to the worm gear cover (106), and the worm gear cover (106) is connected to the bottom plate (107); the stepped shaft shoulder at the upper end of the middle column (105) is connected to an inner wheel frame (109), the upper end of the inner wheel frame (109) is connected to an inner wheel frame upper pressure block (116), the upper end of the inner wheel frame upper pressure block (116) is connected to an inner wheel frame upper pressure block cover plate (112), and the inner wheel frame upper pressure block cover plate (112) is connected to the top end of the middle column (105); The inner wheel frame (109) is connected to a plurality of inner wheel shafts (103) via guide rails, and the inner wheel shafts (103) slide radially in the inner wheel frame (109) guide rails; the inner wheel shafts (103) are connected to the inner wheel (104), and an inclined surface is processed on the inner wheel shaft (103), and a wedge block (110) is inserted axially in the gap between each inclined surface and the inner wheel frame (109), and the wedge block (110) is installed on the wedge block frame (101); The wedge block frame (101) is threadedly connected to the upper end of the feed screw (113), and the lower end of the feed screw (113) is threadedly connected to the worm wheel (117), so as to form a screw-nut pair; the feed screw (113) is installed in the inner hole of the middle column (105), the worm wheel (117) and the worm (114) transmission mechanism are installed in the worm wheel cover (106), and a servo motor and a reducer (108) are installed outside the worm wheel cover (106), and the output shafts of the servo motor and the reducer (108) are connected to the worm (114).

2. The device according to claim 1, characterized in that: The bottom of the base plate (107) is connected to a screw anti-rotation block (115), the bottom of the feed screw (113) is provided with a guide surface, and the screw anti-rotation block (115) is matched and connected with the guide surface at the bottom of the feed screw (113).

3. The device according to claim 1, characterized in that: The wedge block frame (101) is connected to a wedge block pad, and radial feeding of the inner wheel (104) in different ranges can be achieved by adjusting the number of the wedge block pads.

4. The device according to claim 1, characterized in that: The end of the wedge block frame (101) is connected to a wedge block baffle (111) to prevent the wedge block (110) from sliding out of the wedge block frame (101).

5. The device according to claim 1, characterized in that: A spring (102) is connected between the hypotrochoid shaft (103) and the hypotrochoid frame (109) to achieve the retraction of the hypotrochoid shaft (103).

6. The device according to claim 1, characterized in that: The number of the hypotrochoid axles (103) is four, and the four hypotrochoid axles (103) are evenly distributed on the hypotrochoid frame (109) around the circumference with the axis of the hypotrochoid frame (109) as the center.

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