Rapid chamfering equipment for interior and exterior of tubular workpiece

Abstract

The utility model relates to the technical field of double-sided chamfering of tubular workpieces, in particular to equipment for quickly chamfering the inside and the outside of a tubular workpiece. The utility model discloses a tubular workpiece inside and outside fast chamfering device which comprises tool bit mechanisms and a clamping mechanism used for clamping a tubular workpiece to be machined, and the tool bit mechanisms are arranged on the two opposite sides of the clamping mechanism respectively. The tool bit mechanisms on the two sides each comprise a first tool bit used for outer circle chamfering machining and a second tool bit used for inner circle chamfering machining, and the tool bit mechanisms are further matched with a feeding mechanism used for achieving translation of the first tool bits and the second tool bits and a rotating mechanism used for achieving autorotation of the first tool bits and the second tool bits with the transverse rotating shaft as the center. When the tubular workpiece to be machined is clamped on the clamping mechanism and located between the tool bit mechanisms on the two sides, the tubular workpiece to be machined is coaxial with the transverse rotating shaft. The utility model has the advantages that the production cost can be reduced and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double-sided chamfering of tubular workpieces, in particular to a device for rapid internal and external chamfering of tubular workpieces. Background Art

[0002] The Chinese patent application with application number 202010710450.5 discloses a device for chamfering the inner hole of an annular workpiece, including a chamfering mechanism and a workpiece clamping and moving mechanism. The chamfering mechanism includes a chamfering block and a first driving mechanism for rotating the chamfering block. The upper end of the chamfering block is a chamfering end, and the chamfering end has a conical structure that is narrow at the top and wide at the bottom. The workpiece clamping and moving mechanism includes a clamping jaw for clamping the workpiece and a second driving mechanism for lifting the clamping jaw. The clamping jaw includes clamping blocks arranged opposite to each other on the left and right, and positioning grooves for limiting the up and down movement of the workpiece are provided on the opposite inner walls of the two clamping blocks. The clamping jaws of the workpiece clamping and moving mechanism move to place the workpiece on the chamfering end and make the inner hole of the workpiece contact with the surface of the chamfering end.

[0003] In the above technical scheme, after internal chamfering is performed on one end of a high-hardness tubular workpiece (such as tungsten alloy, chromium alloy and other steel parts with a hardness of HRC40 or above after heat treatment), the workpiece can be turned over to perform internal chamfering on the other end on the same equipment. However, if both ends need to be internally chamfered and externally chamfered, it is difficult to set an external chamfering block for external chamfering at the end of the chamfering mechanism of the technical scheme due to the setting of the chamfering mechanism structure. Two devices are required to perform internal chamfering and external chamfering respectively, which is costly and will increase the number of processes. At the same time, since the internal and external chamfering are performed separately, the workpiece moves in the middle of the internal and external chamfering, so there are defects of different axes and different depths between the internal chamfer and the external chamfer, and secondary processing is required, which affects the processing efficiency. Utility Model Content

[0004] The utility model aims to provide a high-hardness tubular workpiece internal and external quick chamfering device which can simultaneously perform internal and external chamfering processing to ensure the coaxial precision of the internal and external chamfers.

[0005] To achieve the above-mentioned purpose, the utility model discloses a device for rapid internal and external chamfering of tubular workpieces, comprising a tool head mechanism and a clamping mechanism for clamping the tubular workpiece to be processed, a tool head mechanism is arranged on opposite sides of the clamping mechanism, the tool head mechanisms on both sides comprise a first tool head for external chamfering processing and a second tool head for internal chamfering processing, the tool head mechanism is also equipped with a feeding mechanism for realizing translation of the first tool head and the second tool head, and a rotating mechanism for realizing rotation of the first tool head and the second tool head around a transverse rotation axis, when the tubular workpiece to be processed is clamped on the clamping mechanism and is located between the tool head mechanisms on both sides, the tubular workpiece to be processed is coaxial with the transverse rotation axis.

[0006] When chamfering is required, the clamping mechanism clamps and fixes the tubular workpiece to be processed, and places the tubular workpiece to be processed between the two cutter head mechanisms. The feeding mechanism causes the first cutter head and the second cutter head to abut against the edge of the tubular workpiece to be processed. After the rotating mechanism is started, chamfering begins. When the chamfering is completed, the first cutter head and the second cutter head are controlled by the feeding mechanism to be away from the tubular workpiece and the rotating mechanism is stopped. Finally, the processed tubular workpiece can be taken out.

[0007] The utility model provides a cutter head mechanism on both sides of the clamping mechanism, and the two cutter head mechanisms are provided with a first cutter head for external chamfering and a second cutter head for internal chamfering. The utility model can simultaneously perform chamfering on the inner and outer surfaces of the tubular workpiece on both axial sides, thereby eliminating the need to set up two chamfering devices to perform internal chamfering and external chamfering respectively, and preventing the occurrence of the situation in which the internal and external chamfers are not coaxial due to the movement of the workpiece. The coaxial processing accuracy can be guaranteed, and there is no need to perform secondary chamfering on the workpiece. The utility model has the advantages of reducing production costs and improving production efficiency.

[0008] The tool head mechanism is located on both sides of the workpiece's axis and can simultaneously perform internal and external chamfering on both sides of the tubular workpiece to prevent the chamfering from being eccentric after the workpiece is disassembled and reprocessed, which affects the processing accuracy. Among them, the clamping mechanism can select any existing workpiece chamfering equipment for clamping and transferring the workpiece, such as a manipulator, a clamping claw assembly, etc.; the rotating mechanism can select any existing workpiece chamfering equipment for causing the tool head to rotate.

[0009] Preferably, a cutter head seat is provided at the output end of the rotating mechanism, and the rotating mechanism is arranged at the output end of the feeding mechanism. The first cutter head and the second cutter head are respectively detachably fixed to the cutter head seat by a connecting block, and an adjustment structure for adjusting the distance between the two connecting blocks is provided between the connecting block and the cutter head seat.

[0010] The adjustment structure can be a combination of a through hole or threaded hole and a strip groove set on the connecting block and the cutter head seat for use with a bolt assembly. For example, a strip groove is set on the cutter head seat, and a through hole or threaded hole for matching the bolt is set on the connecting block; or a number of parallel holes are set on the cutter head seat, and a through hole or threaded hole for matching the bolt is set on the connecting block.

[0011] By adjusting the distance between the first cutter head and the second cutter head, the invention can be applied to chamfering of tubular workpieces with different wall thicknesses; at the same time, when a strip groove is provided on the cutter head seat, a slight distance adjustment between the first cutter head and the second cutter head can be achieved, thereby achieving higher chamfering accuracy.

[0012] The detachable fixation can be achieved by bolt fixing, thereby facilitating the maintenance and replacement of the first cutter head and the second cutter head.

[0013] Preferably, the adjustment structure includes a plurality of first fixing holes arranged side by side on the cutter head seat, a second fixing hole arranged on the connecting block, and fixing bolts cooperating with the first fixing holes and the second fixing holes.

[0014] Compared with the method of digging strip grooves on the cutter head seat, the cutter head seat can have better structural strength and stability, and can facilitate the alignment of the first fixing hole and the second fixing hole when setting a cutter head of a fixed model.

[0015] Preferably, the tool head seat has a protruding fixing portion, the first fixing hole is arranged on the fixing portion, the fixing portion is provided with a fixing groove with a laterally opening, the first fixing hole is connected to the fixing groove and passes through the fixing portion up and down; when one end of the connecting block extends into the fixing groove and is fixed to the fixing portion by the fixing bolt, the outer walls on both sides of the connecting block are in contact with the groove walls on both sides of the fixing groove.

[0016] The positioning effect of the connecting block is improved by increasing the contact surface, and the fixing stability of the connecting block is improved; wherein, the fixing part is clamped by bolts and bolts, and the connecting block can be clamped / pressed by deforming the fixing part, thereby further improving the fixing effect of the connecting block and avoiding the loosening of bolts and nuts due to vibration.

[0017] Preferably, under the action of the rotating mechanism, the first cutter head and the second cutter head on the two cutter head mechanisms both rotate forward.

[0018] Since the two cutter head mechanisms are arranged opposite to each other, when the first and second cutter heads of the two cutter head mechanisms are both rotating forward, the two cutter heads on the two cutter head mechanisms move in opposite directions along the circumference of the workpiece, taking the axial surface of one end of the workpiece as the basic perspective. The counter-rotation method is used to balance the slight rotation of the tubular workpiece itself during grinding, reduce the clamping force required by the clamping mechanism, and thus avoid the mark on the outer cylindrical surface of the workpiece due to the large clamping force.

[0019] Preferably, the clamping mechanism includes a first clamping block and a second clamping block arranged opposite to each other, and a first driving mechanism for adjusting the distance between the first clamping block and the second clamping block. The clamping mechanism is equipped with a second driving mechanism for realizing translation of the clamping mechanism. When the clamping mechanism moves to an extreme position under the action of the second driving mechanism, the tubular workpiece to be processed on the clamping mechanism is coaxial with the transverse rotation axis. When the clamping mechanism moves to another extreme position under the action of the second driving mechanism, the tubular workpiece to be processed on the clamping mechanism is detached from the tool head mechanism.

[0020] The utility model can simultaneously perform chamfering on the inner and outer surfaces of both sides of the axial direction of a tubular workpiece, does not need to set up two chamfering devices, and does not need to perform secondary chamfering on the workpiece, and has the advantages of reducing production costs and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A structural schematic diagram of the utility model;

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 A structural schematic diagram of a cutter head seat of the utility model;

[0024] Figure 4 A structural schematic diagram of a connecting block of the utility model;

[0025] Figure 5 It is a schematic diagram of the rotation direction of the cutter head in the two-side cutter head mechanism of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the clamping mechanism of the utility model.

[0027] In the figure: 41, movable block; 42, second driving mechanism; 43, first clamping block; 46, second clamping block; 57, cutter head seat; 58, connecting block; 59, second fixing hole; 61, first cutter head; 62, second cutter head; 63, fixing groove; 64, first fixing hole; 65, bolt. DETAILED DESCRIPTION

[0028] Depend on Figure 1 As shown, this embodiment discloses a device for rapid internal and external chamfering of tubular workpieces, including a cutter head mechanism and a clamping mechanism for clamping the tubular workpiece to be processed, a cutter head mechanism is provided on both sides of the clamping mechanism, and the cutter head mechanisms on both sides include a first cutter head 61 for external chamfering and a second cutter head 62 for internal chamfering, and the cutter head mechanism is also equipped with a feed mechanism for realizing translation of the first cutter head 61 and the second cutter head 62, and a rotating mechanism for realizing rotation of the first cutter head and the second cutter head with the transverse rotation axis as the center, when the tubular workpiece to be processed is clamped on the clamping mechanism and located between the cutter head mechanisms on both sides, the tubular workpiece to be processed is coaxial with the transverse rotation axis. Among them, the rotating mechanism includes a reduction motor, the cutter head mechanism is arranged at the output end of the reduction motor, the feeding mechanism includes a translation cylinder and a slide rail, and the rotating mechanism is slidably matched on the slide rail and fixed at the output end of the translation cylinder. The rotating mechanism is used to rotate the first cutter head 61 and the second cutter head 62 in opposite directions. When the first cutter head 61 and the second cutter head 62 of the two cutter head mechanisms rotate forward, the two cutter heads on the two cutter head mechanisms move in opposite directions along the circumferential direction of the workpiece.

[0029] like Figure 2 As shown, the first cutter head 61 and the second cutter head 62 are detachably fixed on the cutter head seat 57 via a connecting block 58 respectively. The cutter head seat 57 is fixed at the output end of the reduction motor. An adjustment structure for adjusting the distance between the two connecting blocks 58 is provided between the connecting block 58 and the cutter head seat 57. The cutter head seat 57 has a laterally protruding fixing portion 56, and the adjustment structure includes a plurality of first fixing holes arranged on the fixing portion 56 and a second fixing hole 59 arranged on the connecting block 58, wherein the plurality of first fixing holes 64 are arranged side by side, and the fixing portion 56 is provided with a laterally opening fixing groove 63, and the first fixing hole 64 is communicated with the fixing groove 63 and passes through the fixing portion 56 up and down; wherein the first fixing hole 64 is a threaded hole matched with a fixing bolt, and the second fixing hole 59 is a through hole for the fixing bolt to pass through, and one end of the connecting block 58 extends into the fixing groove 63 and is fixed to the fixing portion 56 by the fixing bolt, and the upper and lower outer walls of the connecting block 58 are in contact with the upper and lower opposite side groove walls of the fixing groove 63, and the connecting block 58 is pressed between the upper and lower opposite side groove walls of the fixing groove 63.

[0030] Depend on Figure 6 As shown, the clamping mechanism includes a first clamping block 43 and a second clamping block 46 arranged opposite to each other, a first driving mechanism for adjusting the distance between the first clamping block and the second clamping block, and the clamping mechanism is equipped with a second driving mechanism for realizing the translation of the clamping mechanism. Among them, the first clamping block 43 and the second clamping block 46 are arranged opposite to each other, the first driving mechanism and the second driving mechanism are both cylinders, the second driving mechanism 42 is fixed on the platform, the output end of the second driving mechanism 42 is connected to the movable block 41, the first clamping block 43 as a fixed clamping jaw and the first driving mechanism are fixed on the movable block 41, and the second clamping block 46 as a movable clamping jaw is fixed on the output end of the first driving mechanism. When the clamping mechanism moves to the extreme position under the action of the second driving mechanism 42, the tubular workpiece to be processed on the clamping mechanism is coaxial with the horizontal rotation axis, and when the clamping mechanism moves to another extreme position under the action of the second driving mechanism 42, the tubular workpiece to be processed on the clamping mechanism is separated from the tool head mechanism.

[0031] When the high-hardness tubular workpiece is chamfered, the first cutter head 61 and the second cutter head 62 are fixedly installed on the connecting block 58 by installing screws in advance, and then the corresponding first fixing hole 64 to be assembled is manually selected according to the size of the tubular workpiece, and the connecting block 58 with the cutter head is inserted into the fixing groove 63, and assembled and fixed by bolts 65. The clamping mechanism clamps and fixes the tubular workpiece to be processed and drives it to between the cutter head mechanisms on both sides. The feeding mechanism uses the pre-set position information to move the first cutter head 61 and the second cutter head 62 to the edge of the tubular workpiece to be processed. When it is close to the edge of the tubular workpiece to be processed, it slowly drives the first cutter head 61 and the second cutter head 62 to feed. At the same time, the rotating mechanism is started, the motor 54 is started and then drives the cutter head seat 57 to rotate synchronously. The cutter head seat 57 drives the first cutter head 61 and the second cutter head 62 to rotate through the connecting block 58. At the same time, chamfering begins. After the chamfering is completed, the first cutter head 61 and the second cutter head 62 are controlled by the feeding mechanism to be away from the tubular workpiece and the rotating mechanism is stopped. Finally, the processed tubular workpiece can be taken out.

Claims

1. A device for rapid internal and external chamfering of a tubular workpiece, comprising a cutter head mechanism and a clamping mechanism for clamping the tubular workpiece to be processed, characterized in that: A tool head mechanism is provided on opposite sides of the clamping mechanism, and the tool head mechanism includes a first tool head for external chamfering processing and a second tool head for internal chamfering processing. The first tool head and the second tool head are arranged side by side. The tool head mechanism is also equipped with a feeding mechanism for realizing synchronous feeding of the first tool head and the second tool head, and a rotating mechanism for realizing simultaneous rotation of the first tool head and the second tool head around the transverse rotation axis. When the tubular workpiece to be processed is clamped on the clamping mechanism and is located between the tool head mechanisms on both sides, the tubular workpiece to be processed is coaxial with the transverse rotation axis.

2. The device for rapid internal and external chamfering of tubular workpieces according to claim 1, characterized in that: A cutter head seat is provided at the output end of the rotating mechanism, and the rotating mechanism is arranged at the output end of the feeding mechanism. The first cutter head and the second cutter head are detachably fixed to the cutter head seat through a connecting block respectively, and an adjustment structure for adjusting the distance between the two connecting blocks is provided between the connecting block and the cutter head seat.

3. The device for rapid internal and external chamfering of tubular workpieces according to claim 2, characterized in that: The adjustment structure includes a plurality of first fixing holes arranged side by side on the cutter head seat, a second fixing hole arranged on the connecting block, and fixing bolts matched with the first fixing holes and the second fixing holes.

4. The device for rapid internal and external chamfering of tubular workpieces according to claim 3, characterized in that: The tool head seat has a protruding fixing portion, the first fixing hole is arranged on the fixing portion, the fixing portion is provided with a fixing groove with a side opening, the first fixing hole is connected with the fixing groove and passes through the fixing portion up and down; when one end of the connecting block extends into the fixing groove and is fixed to the fixing portion by the fixing bolt, the outer walls on both sides of the connecting block are in contact with the groove walls on both sides of the fixing groove.

5. The device for rapid internal and external chamfering of tubular workpieces according to claim 1, characterized in that: Under the action of the rotating mechanism, the first cutter head and the second cutter head on the two cutter head mechanisms both rotate forward.

6. The device for rapid internal and external chamfering of tubular workpieces according to claim 1, characterized in that: The clamping mechanism includes a first clamping block and a second clamping block arranged opposite to each other, and a first driving mechanism for adjusting the distance between the first clamping block and the second clamping block. The clamping mechanism is equipped with a second driving mechanism for realizing translation of the clamping mechanism. When the clamping mechanism moves to an extreme position under the action of the second driving mechanism, the tubular workpiece to be processed on the clamping mechanism is coaxial with the transverse rotation axis. When the clamping mechanism moves to another extreme position under the action of the second driving mechanism, the tubular workpiece to be processed on the clamping mechanism is separated from the tool head mechanism.

Images