Bent pipe end horn mouth outer diameter turning equipment

Abstract

The utility model relates to elbow pipe end horn mouth outer diameter turning equipment which comprises a workbench, a workpiece clamp and a turning mechanism. According to the technical key points, the turning mechanism comprises a headstock, a main shaft, a main shaft outer shaft sleeve, a first outer shaft copper sleeve and a second outer shaft copper sleeve, wherein the main shaft outer shaft sleeve sleeves the front part of the main shaft through a thrust bearing; the first outer shaft copper sleeve is arranged between the front part of the peripheral surface of the main shaft outer shaft sleeve and the inner wall of a cavity of the headstock; the second outer shaft copper sleeve is arranged between the rear part of the peripheral surface of the main shaft outer shaft sleeve and the inner wall of the cavity of the headstock; the cutter head is arranged at the front end of the main shaft, the spline housing is connected with the rear part of the main shaft, the rotary driving mechanism is connected with the spline housing, the horizontal cutter feeding air cylinder is arranged above the headstock, the connecting frame is connected between an outer shaft sleeve of the main shaft and a cylinder rod of the horizontal cutter feeding air cylinder, and an axial avoiding hole corresponding to the connecting frame is formed in the top surface of the headstock. The device solves the problem that the turning machining difficulty of the horn-mouth-shaped end of an existing bent pipe is large, so that the dimensional tolerance requirement of a product is met, and the machining precision and the machining efficiency of the product are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the technical field of pipe bending equipment, specifically to a turning device for the outer diameter of the flared end of a pipe. Background Technology

[0002] Currently, to adapt to various applications, some bends in pipes require their ends to be flared. However, due to the limitations of the bend's structure, concentric rotation is not possible, making the machining of the flared end difficult. Consequently, its outer diameter may not meet design requirements, hindering subsequent assembly. This application addresses this issue. Utility Model Content

[0003] The purpose of this invention is to provide a reasonably structured and reliable turning device for the outer diameter of the flared end of bent pipes, solving the problem of high difficulty in turning the flared end of existing bent pipes, thereby meeting product dimensional tolerance requirements, ensuring assembly needs, and significantly improving product processing accuracy and efficiency.

[0004] The technical solution of this utility model is:

[0005] A turning device for the outer diameter of a bend at the end of a bell-shaped pipe includes a worktable, a workpiece fixture disposed above the worktable, and a turning mechanism. The key technical features are: the turning mechanism includes a headstock, a spindle, a spindle outer sleeve mounted on the front of the spindle using a thrust bearing, a first outer sleeve located between the front of the outer peripheral surface of the spindle outer sleeve and the inner wall of the cavity of the headstock, a second outer sleeve located between the rear of the outer peripheral surface of the spindle outer sleeve and the inner wall of the cavity of the headstock, a cutting head located at the front end of the spindle, a splined sleeve connected to the rear of the spindle using a splined structure, a rotary drive mechanism connected to the splined sleeve, a horizontal feed cylinder disposed above the headstock, and a connecting frame connecting the outer sleeve of the spindle and the cylinder rod of the horizontal feed cylinder. The top surface of the headstock is provided with an axial clearance hole corresponding to the connecting frame.

[0006] The aforementioned turning equipment for the outer diameter of the flared end of a bent pipe includes a rotary drive mechanism comprising a driven pulley fixed to the outer circumferential surface of a spline sleeve, a rotary drive motor reducer located below the worktable, a drive pulley fixed to the output shaft of the rotary drive motor reducer, and a transmission belt connecting the drive pulley and the driven pulley.

[0007] The aforementioned turning equipment for the outer diameter of the flared end of a bent pipe includes a workpiece fixture comprising a clamping base fixed to the upper surface of a worktable and a pneumatic clamping assembly located above the clamping base. The pneumatic clamping assembly consists of a fixed plate, a longitudinal cylinder inverted above the fixed plate, a clamping block located at the lower end of the cylinder rod of the longitudinal cylinder, a guide sleeve located above the fixed plate, and a guide post located on the upper surface of the clamping block and cooperating with the guide sleeve. The lower surface of the clamping block is provided with an upper groove, and the upper surface of the clamping base is provided with a lower groove that cooperates with the upper groove.

[0008] The aforementioned pipe bending end bell mouth outer diameter turning equipment has a positioning flange at the front end of the first outer shaft copper sleeve. The positioning flange is connected and fixed to the front end face of the machine head seat by a fixing component. The inner wall of the cavity of the machine head seat has a positioning shoulder corresponding to the front end of the second outer shaft copper sleeve. The rear end of the cavity of the machine head seat has an annular pressure cap corresponding to the rear end of the second outer shaft copper sleeve. The front end of the spline sleeve is connected to the inner circumference of the annular pressure cap by a bearing, and the rear end of the spline sleeve is connected to the tail of the machine head seat by a bearing.

[0009] The aforementioned turning equipment for the outer diameter of the flared end of a bent pipe has two thrust bearings, which are respectively fixed to the front and rear ends of the inner wall of the outer sleeve of the main shaft. The front end of the main shaft is provided with a limiting platform corresponding to one of the thrust bearings, and a limiting nut corresponding to the other thrust bearing is connected to the main shaft.

[0010] The aforementioned turning equipment for turning the outer diameter of the flared end of a bent pipe has an annular positioning part at the front end of the cutting head, and a fixing hole for fixing the cutting blade is provided on the side wall of the annular positioning part.

[0011] The aforementioned turning equipment for turning the outer diameter of the flared end of a bent pipe has a connecting wing at the bottom of the machine head seat. The connecting wing has an adjustment mounting elongated hole perpendicular to the axis of the spindle to facilitate adjustment of the mounting position.

[0012] The beneficial effects of this utility model are:

[0013] In operation, the workpiece fixture first clamps the bent pipe to be machined, positioning it to ensure displacement during machining. The turning mechanism, on one hand, uses a spline structure and spline sleeve to drive the spindle, cutter head, and inserts to rotate; on the other hand, a horizontal feed cylinder and connecting frame push the spindle outer sleeve, spindle, cutter head, and inserts forward, achieving axial feed to turn the flared end of the bent pipe. This is a turning device that does not require the pipe itself to move, solving the problem of high difficulty in turning the flared end of bent pipes, thus meeting product dimensional tolerance requirements, ensuring assembly needs, and significantly improving product machining accuracy and efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is an axial cross-sectional view of the headstock of this utility model.

[0016] In the diagram: 1. Headstock, 2. Horizontal feed cylinder, 3. Connecting frame, 4. Guide column, 5. Longitudinal cylinder, 6. Guide sleeve, 7. Fixing plate, 8. Clamping block, 9. Clamping base, 10. Bend, 11. Rotary drive motor reducer, 12. Drive pulley, 13. Worktable, 14. Second outer shaft sleeve, 15. Main spindle outer sleeve, 16. First outer shaft sleeve, 17. Cutting head, 18. Thrust bearing, 19. Limit nut, 20. Annular gland, 21. Driven pulley, 22. Main spindle, 23. Spline sleeve, 24. Bearing, 25. Axial clearance hole, 26. Annular positioning part. Detailed Implementation

[0017] The present invention will be described in detail with reference to the accompanying drawings.

[0018] like Figure 1 , Figure 2 As shown, the device for turning the outer diameter of the flared end of the bent pipe includes a worktable 13, a workpiece fixture disposed above the worktable 13, and a turning mechanism.

[0019] The turning mechanism includes a headstock 1, a spindle 22, a spindle outer sleeve 15 mounted on the front of the spindle 22 via a thrust bearing 18, a first outer sleeve 16 located between the front of the outer peripheral surface of the spindle outer sleeve 15 and the inner wall of the cavity of the headstock 1, a second outer sleeve 14 located between the rear of the outer peripheral surface of the spindle outer sleeve 15 and the inner wall of the cavity of the headstock 1, a cutting head 17 located at the front end of the spindle 22, a spline sleeve 23 connected to the rear of the spindle 22 via a spline structure, a rotary drive mechanism connected to the spline sleeve 23, a horizontal feed cylinder 2 located above the headstock 1, and a connecting frame 3 connecting the spindle outer sleeve 15 and the cylinder rod of the horizontal feed cylinder 2. The top surface of the headstock 1 has an axial clearance hole 25 corresponding to the connecting frame 3. The front end of the cutting head 17 has an annular positioning part 26, and the side wall of the annular positioning part 26 has a fixing hole for fixing the cutting tool (not shown in the figure).

[0020] In this embodiment, the rotary drive mechanism includes a driven pulley 21 fixed to the outer peripheral surface of the spline sleeve 23, a rotary drive motor reducer 11 located below the worktable 13, a driving pulley 12 fixed to the output shaft of the rotary drive motor reducer 11, and a transmission belt (omitted in the figure) connecting the driving pulley 12 and the driven pulley 21.

[0021] The workpiece fixture includes a clamping base 9 fixed to the upper surface of the worktable 13 and a pneumatic clamping assembly located above the clamping base 9. The pneumatic clamping assembly consists of a fixed plate 7, a longitudinal cylinder 5 inverted above the fixed plate 7, a clamping block 8 located at the lower end of the cylinder rod of the longitudinal cylinder 5, a guide sleeve 6 located above the fixed plate 7, and a guide post 4 located on the upper surface of the clamping block 8 and cooperating with the guide sleeve 6. The lower surface of the clamping block 8 is provided with an upper groove, and the upper surface of the clamping base 9 is provided with a lower groove that mates with the upper groove.

[0022] The first outer shaft copper sleeve 16 has a positioning flange at its front end, which is fixed to the front end face of the headstock 1 by means of a fastener. The inner wall of the cavity of the headstock 1 has a positioning shoulder corresponding to the front end of the second outer shaft copper sleeve 14. The rear end of the cavity of the headstock 1 has an annular pressure cap 20 corresponding to the rear end of the second outer shaft copper sleeve 14. The front end of the spline sleeve 23 is connected to the inner circumference of the annular pressure cap 20 by means of a bearing 24, and the rear end of the spline sleeve 23 is connected to the tail end of the headstock 1 by means of a bearing 24. There are two thrust bearings 18, which are fixed to the front and rear ends of the inner wall of the main shaft outer sleeve 15, respectively. The front end of the main shaft 22 is provided with a limiting platform corresponding to one of the thrust bearings 18, and a limiting nut 19 corresponding to the other thrust bearing 18 is connected to the main shaft 22.

[0023] The bottom of the headstock 1 is provided with a connecting wing, and the connecting wing is provided with an adjustment mounting elongated hole perpendicular to the axis of the main shaft 22, so as to facilitate the adjustment of the mounting position.

[0024] Working principle:

[0025] In use, the bent pipe 10 to be processed is placed in the upper groove of the clamping base 9, and then the longitudinal cylinder 5 of the pneumatic clamping assembly is used to push the clamping block 8 downward, so that the clamping block 8 is fastened above the clamping base 9, thereby achieving the purpose of clamping the bent pipe 10.

[0026] The rotary drive motor reducer 11 is started, which drives the spline sleeve 23 to rotate via the drive pulley 12, transmission belt, and driven pulley 21. The spline sleeve 23, through its spline structure, drives the spindle 22, the cutter head 17, and the insert fixed on the cutter head 17 to rotate synchronously. At the same time, the horizontal feed cylinder 2 is started, and the cylinder rod extends outward and pushes the spindle outer sleeve 15, the spindle 22, the cutter head 17, and the insert forward through the connecting bracket 3, realizing axial feed. The insert, through bidirectional motion of rotating around the axis of the spindle 22 and moving horizontally along the axis of the spindle 22, realizes the turning of the flared end of the bent pipe 10.

[0027] After processing is completed, the spindle 22, the cutter head 17 and the cutting blade are reset and stop rotating. The longitudinal cylinder 5 of the pneumatic clamping assembly drives the clamping block 8 to rise, and the processed bent pipe can be taken out.

[0028] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A turning device for the outer diameter of a bend in the end of a pipe, comprising a worktable, a workpiece fixture disposed above the worktable, and a turning mechanism, characterized in that: The turning mechanism includes a headstock, a spindle, a spindle outer bushing mounted on the front of the spindle using a thrust bearing, a first outer bushing located between the front of the outer peripheral surface of the spindle outer bushing and the inner wall of the cavity of the headstock, a second outer bushing located between the rear of the outer peripheral surface of the spindle outer bushing and the inner wall of the cavity of the headstock, a cutting head located at the front end of the spindle, a splined sleeve connected to the rear of the spindle using a splined structure, a rotary drive mechanism connected to the splined sleeve, a horizontal feed cylinder located above the headstock, and a connecting frame connecting the spindle outer bushing and the cylinder rod of the horizontal feed cylinder. The top surface of the headstock is provided with an axial clearance hole corresponding to the connecting frame.

2. The device for turning the outer diameter of the flared end of a bent pipe according to claim 1, characterized in that: The rotary drive mechanism includes a driven pulley fixed to the outer circumferential surface of the spline sleeve, a rotary drive motor reducer located below the worktable, a driving pulley fixed to the output shaft of the rotary drive motor reducer, and a transmission belt connecting the driving pulley and the driven pulley.

3. The device for turning the outer diameter of the flared end of a bent pipe according to claim 1, characterized in that: The workpiece fixture includes a clamping base fixed to the upper surface of the worktable and a pneumatic clamping assembly located above the clamping base. The pneumatic clamping assembly consists of a fixed plate, a longitudinal cylinder inverted above the fixed plate, a clamping block located at the lower end of the cylinder rod of the longitudinal cylinder, a guide sleeve located above the fixed plate, and a guide post located on the upper surface of the clamping block and cooperating with the guide sleeve. The lower surface of the clamping block is provided with an upper groove, and the upper surface of the clamping base is provided with a lower groove that cooperates with the upper groove.

4. The device for turning the outer diameter of the flared end of a bent pipe according to claim 1, characterized in that: The front end of the first outer shaft copper sleeve is provided with a positioning flange, which is connected and fixed to the front end face of the machine head seat by a fastener. The inner wall of the cavity of the machine head seat is provided with a positioning shoulder corresponding to the front end of the second outer shaft copper sleeve. The rear end of the cavity of the machine head seat is provided with an annular pressure cap corresponding to the rear end of the second outer shaft copper sleeve. The front end of the spline sleeve is connected to the inner circumference of the annular pressure cap by a bearing, and the rear end of the spline sleeve is connected to the tail of the machine head seat by a bearing.

5. The device for turning the outer diameter of the flared end of a bent pipe according to claim 1, characterized in that: The number of thrust bearings is two, which are fixed at the front and rear ends of the inner wall of the outer sleeve of the main shaft, respectively. The front end of the main shaft is provided with a limiting platform corresponding to one of the thrust bearings, and a limiting nut corresponding to the other thrust bearing is connected to the main shaft.

6. The device for turning the outer diameter of the flared end of a bent pipe according to claim 1, characterized in that: The front end of the blade is provided with an annular positioning part, and the side wall of the annular positioning part is provided with a fixing hole for fixing the blade.

7. The device for turning the outer diameter of the flared end of a bent pipe according to claim 1, characterized in that: The bottom of the machine head base is provided with a connecting wing, and the connecting wing is provided with an adjustment mounting elongated hole perpendicular to the axis of the main shaft.

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