A high-temperature alloy bolt thread processing equipment

Abstract

The invention discloses a high temperature resistant alloy bolt thread processing equipment, and relates to the technical field of thread processing. The invention can realize automatic loading and unloading of bolts, and can be realized by only controlling the extension and retraction of a feeding cylinder telescopic rod, so that the overall feeding structure is more reliable; a closed-loop thread cutting detection system is set up, and the rotation torque on the driven tooth plate is adjusted in real time by measuring the force of the tool to prevent the tool from being broken due to force; a rotating disk that can rotate with the clamping sleeve is set up, which can prevent debris from falling on the clamping sleeve, and reduce the difficulty of equipment maintenance after thread processing.

Description

Technical Field

[0001] The invention relates to the technical field of thread processing, in particular to a high temperature resistant alloy bolt thread processing device. Background Art

[0002] Parts working in high temperature environments are mainly made of high temperature resistant alloys. The fitting relationship between these parts in high temperature environments is not the traditional welding relationship, but mostly bolted connection. This can effectively prevent weld damage caused by thermal expansion and contraction, thereby greatly reducing the structural strength. The hardness of high temperature alloys is often very high, and the tool edge is prone to chipping during the thread cutting process of the bolt. Therefore, the operator will be in great danger of life during the thread cutting process of high temperature alloys. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a high-temperature resistant alloy bolt thread processing equipment, including a thread cutting plate, a tool mounting frame for fixing the tool is movably installed on the thread cutting plate through a tool moving platform, the tool is composed of a tool handle and a tool head, an embedding groove is opened on the tool handle, and a strain gauge is arranged in the embedding groove; an outer ring gear is also rotatably installed on the thread cutting plate, a support frame is fixedly installed on the thread cutting plate, a planetary frame is rotatably installed on the support frame, the planetary frame is located on a side of the support frame close to the thread cutting plate, three planetary gears are rotatably installed on the planetary frame, the three planetary gears are meshed with the outer ring gear for transmission, and a central gear is also meshed at the position of the rotation center of the three planetary gears, and a regulating gear disk fixed to the planetary frame is arranged on a side of the support frame away from the thread cutting plate.

[0004] Preferably, a protective panel is fixedly mounted on the support frame or the threaded cutting plate, a gap is provided between the protective panel and the threaded cutting plate, and a control motor is fixedly mounted on the protective panel, and a regulating gear meshing with the regulating gear disc is fixedly mounted on the output shaft of the control motor.

[0005] Preferably, a drive motor cover is fixedly installed on the thread cutting plate, and a drive motor is fixedly installed inside the drive motor cover. The output shaft of the drive motor is fixedly matched with the central gear, and the output shaft of the drive motor has a rotation / non-matching relationship with the regulating gear disk and the planetary carrier.

[0006] Preferably, a driven chainring is rotatably mounted on the thread cutting plate, and a driving chainring is rotatably mounted between the protective panel and the thread cutting plate. The driving chainring is fixed as a whole with the outer ring gear via a rotating shaft, and the driving chainring and the driven chainring are coupled via a chain transmission.

[0007] Preferably, a clamping sleeve is fixedly mounted on the driven chainring, and three equidistant clamping heads are slidably mounted in the radial direction of the clamping sleeve, each clamping head is provided with a sliding pin, and a clamping drive ring is also rotatably mounted on the outer circumferential surface of the clamping sleeve, and three inclined slide rail grooves are provided on the clamping drive ring, wherein the sliding pins are slidably matched with the corresponding slide rail grooves to drive the clamping head to move radially along the clamping sleeve.

[0008] Preferably, the clamping sleeve is also provided with a groove, in which a clamping electric cylinder is arranged, the telescopic tube of the clamping electric cylinder is movably connected to the clamping sleeve, and the telescopic rod of the clamping electric cylinder is movably connected to the clamping drive ring for driving the clamping drive ring to rotate on the clamping sleeve.

[0009] Preferably, a plurality of rotating disks are fixedly mounted on the upper surface of the clamping sleeve, and a shielding plate is fixedly mounted on the driving motor cover, and there is no contact between the shielding plate and the rotating disk.

[0010] Preferably, a feeding tube is arranged below the threaded cutting plate, the top end of the feeding tube is arranged with an inclined surface, and a unloading shielding plate is overlapped on the inclined surface, the unloading shielding plate is rotatably mounted on the unloading shielding plate bracket, and the unloading shielding plate bracket is fixed on the feeding tube, wherein a torsion spring is arranged at the rotating connection between the unloading shielding plate and the unloading shielding plate bracket.

[0011] Preferably, a feeding cylinder is fixedly installed at the bottom of the feeding tube, the telescopic rod of the feeding cylinder is located inside the feeding tube, and a top platform is provided at the end of the telescopic rod of the feeding cylinder for lifting the bolts, and a feeding window for placing the bolts is also provided on the feeding tube.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention can realize automatic loading and unloading of bolts, and it can be realized only by controlling the extension and retraction of a telescopic rod of a loading cylinder, so that the overall loading structure is more reliable; (2) The present invention is provided with a closed-loop thread cutting detection system, which adjusts the rotational torque on the driven toothed disc in real time by measuring the force condition of the tool, thereby preventing the tool from being broken due to force; (3) The present invention is provided with a rotating disc that can rotate together with the clamping sleeve frame, which can prevent debris from falling on the clamping sleeve, thereby reducing the difficulty of maintaining the equipment after thread processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the structure of the feeding pipe of the present invention.

[0015] Figure 3 It is a schematic diagram of the structure of the rotating disk of the present invention.

[0016] Figure 4For the present invention Figure 3 Schematic diagram of the structure at point A in the middle.

[0017] Figure 5 The figure is a schematic diagram of the control gear structure of the present invention.

[0018] Figure 6 It is a schematic diagram of the planet carrier structure of the present invention.

[0019] Figure 7 It is a schematic diagram of the structure of the threaded cutting plate of the present invention.

[0020] Figure 8 It is a structural schematic diagram of the driven toothed disc of the present invention.

[0021] Fig. 9 It is a schematic diagram of the structure of the clamping sleeve frame of the present invention.

[0022] In the figure: 101-feeding cylinder; 102-feeding pipe; 103-unloading shielding plate bracket; 104-unloading shielding plate; 105-feeding window; 106-top platform; 107-thread cutting plate; 108-tool moving platform; 109-tool; 110-tool mounting frame; 111-embedded slot; 112-drive motor cover; 113-drive motor; 114-control motor; 115-protection panel; 116-support frame ; 117-regulating sprocket; 118-regulating gear; 119-planet carrier; 120-central gear; 121-planetary gear; 122-outer ring gear; 123-driving sprocket; 124-chain; 125-driven sprocket; 126-clamping sleeve; 127-clamping drive ring; 128-clamping electric cylinder; 129-clamping head; 130-slideway groove; 131-sliding pin; 132-rotating disk; 133-shielding plate. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-9 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0024] The present invention provides a high-temperature resistant alloy bolt thread processing device, comprising a thread cutting plate 107, on which a tool mounting frame 110 for fixing a tool 109 is movably mounted through a tool moving platform 108, the tool 109 is composed of a tool handle and a tool head, an embedding groove 111 is provided on the tool handle of the tool 109, and a strain gauge is provided in the embedding groove 111; an outer ring gear ring 122 is rotatably mounted on the thread cutting plate 107, and a support frame 116 is fixedly mounted on the thread cutting plate 107, A planet carrier 119 is rotatably mounted on the support frame 116. The planet carrier 119 is located on a side of the support frame 116 close to the thread cutting plate 107. Three planetary gears 121 are rotatably mounted on the planet carrier 119. The three planetary gears 121 are meshed with an outer ring gear 122 for transmission, and a central gear 120 is also meshed at the position of the rotation center of the three planetary gears 121. A regulating toothed disc 117 fixed to the planet carrier 119 is provided on a side of the support frame 116 away from the thread cutting plate 107. A protective panel 115 is also fixedly mounted on the support frame 116 or the thread cutting plate 107. A gap is provided between the protective panel 115 and the thread cutting plate 107. A control motor 114 is fixedly mounted on the protective panel 115. A regulating gear 118 meshed with the regulating toothed disc 117 is fixedly mounted on the output shaft of the control motor 114. A drive motor cover 112 is also fixedly mounted on the thread cutting plate 107, and a drive motor 113 is fixedly mounted inside the drive motor cover 112. The output shaft of the drive motor 113 is fixedly matched with the central gear 120, and the output shaft of the drive motor 113 is in a rotation / non-cooperation relationship with the regulating toothed disc 117 and the planetary carrier 119. A driven toothed disc 125 is also rotatably mounted on the thread cutting plate 107, and a driving toothed disc 123 is rotatably mounted between the protective panel 115 and the thread cutting plate 107. The driving toothed disc 123 and the outer ring gear 122 are fixed as a whole through a rotating shaft, and the driving toothed disc 123 and the driven toothed disc 125 are matched through a chain 124. A clamping sleeve 126 is fixedly mounted on the driven sprocket 125, and three equidistant clamping heads 129 are slidably mounted in the radial direction of the clamping sleeve 126, and each clamping head 129 is provided with a sliding pin 131. A clamping drive ring 127 is also rotatably mounted on the outer circumferential surface of the clamping sleeve 126, and three inclined slide rail grooves 130 are provided on the clamping drive ring 127, wherein the sliding pin 131 is slidably matched with the corresponding slide rail grooves 130, and is used to drive the clamping head 129 to move along the radial direction of the clamping sleeve 126. The clamping sleeve 126 is also provided with a groove, and a clamping electric cylinder 128 is arranged in the groove, and the telescopic cylinder of the clamping electric cylinder 128 is movably connected to the clamping sleeve 126, and the telescopic rod of the clamping electric cylinder 128 is movably connected to the clamping drive ring 127, and is used to drive the clamping drive ring 127 to rotate on the clamping sleeve 126.A plurality of rotating disks 132 are fixedly mounted on the upper surface of the clamping sleeve 126, and a shielding plate 133 is fixedly mounted on the driving motor cover 112, and the shielding plate 133 does not contact the rotating disk 132. A feeding pipe 102 is arranged below the thread cutting plate 107, and the top of the feeding pipe 102 is arranged with an inclined surface, and a discharge shielding plate 104 is overlapped on the inclined surface, and the discharge shielding plate 104 is rotatably mounted on the discharge shielding plate bracket 103, and the discharge shielding plate bracket 103 is fixed on the feeding pipe 102, wherein a torsion spring is arranged at the rotation connection between the discharge shielding plate 104 and the discharge shielding plate bracket 103. A feeding cylinder 101 is fixedly installed at the bottom of the feeding tube 102. The telescopic rod of the feeding cylinder 101 is located inside the feeding tube 102, and a top platform 106 is provided at the end of the telescopic rod of the feeding cylinder 101 for lifting bolts. A feeding window 105 for placing bolts is also provided on the feeding tube 102.

[0025] The working principle of a high-temperature resistant alloy bolt thread processing equipment disclosed in the present invention is as follows: push the high-temperature resistant alloy bolt into the feeding tube 102 through the feeding window 105 so that the nut contacts the top platform 106, and then start the feeding cylinder 101. The telescopic rod of the feeding cylinder 101 pushes the bolt to move upward, and pushes open the unloading baffle plate 104, so that the unloading baffle plate bracket 103 and the unloading baffle plate 104 rotate relative to each other, and then push the bolt to the middle position of the three clamping heads 129, start the clamping electric cylinder 128, and the clamping electric cylinder 128 drives the clamping drive ring 127 to rotate, and drives the clamping head 129 to move toward the bolt through the slide rail groove 130 and the sliding pin 131, so as to center and fix the bolt. Then, the telescopic rod of the loading cylinder 101 is controlled to retract so that the top platform 106 is reset. During this process, the unloading shielding plate 104 will contact the inclined surface of the loading tube 102 again under the action of the torsion spring (the thickness of the top platform 106 can just be stuck in the top position of the swing of the unloading shielding plate 104 and will not go over the unloading shielding plate 104. This depends on the thickness of the bolt and nut. Therefore, a top platform 106 of appropriate thickness is selected according to needs). When the thread processing of the bolt is completed, the clamping head 129 loosens the bolt, and it will fall on the inclined unloading shielding plate 104 under the action of gravity, and then slide away.

[0026] The tool moving platform 108 can drive the tool 109 to move along the axial and radial directions of the bolt, and is used to adjust the thread cutting depth, pitch and thread length. During the thread processing, the drive motor 113 needs to be started, and the output shaft of the drive motor 113 drives the central gear 120 to rotate. The rotation of the central gear 120 will drive the outer ring gear 122 to rotate through the planetary gear 121 (provided that the rotation of the planetary frame 119 is restricted). The rotation of the outer ring gear 122 will drive the active toothed disc 123 to rotate, and the active toothed disc 123 will drive the driven toothed disc 125 to rotate through the chain 124. The rotation of the driven toothed disc 125 will drive the clamping head 129 on the clamping sleeve 126 to rotate, thereby driving the clamped bolt to rotate, and the fixed tool 109 can cut the thread on the surface of the bolt.

[0027] When the tool 109 contacts the bolt, the tool 109 will be deformed, although the deformation is very small. Therefore, an embedding groove 111 is set on the handle of the tool 109. When the strain gauge set in the embedding groove 111 is subjected to external force, the internal resistance value will change, that is, the handle of the tool 109 will be bent by force, and the bending will stretch the strain gauge, thereby changing its internal resistance value. During normal cutting, the resistance value of the strain gauge changes within a specific range (it can be replaced by a force-sensitive resistor, which is set on the force-bearing surface at the connection between the tool mounting frame 110 and the tool 109, but a force-sensitive resistor with a larger detection range is required, which is generally not used). When the blade of the tool 109 becomes blunt, the cutting force on the tool 109 will increase, so it is easy to cause the blade to break, threatening the life and health of the operator. At this time, the force on the handle of the tool 109 increases, which means that it exceeds the set range, and the resistance value of the strain gauge itself will exceed the set range. As a result, the potential difference across the strain gauge increases (arranged in series with a fixed resistor), and the fixed resistor provides a positive trigger voltage for the base and emitter of the NPN transistor, and the collector and emitter of the NPN transistor will control the on and off of the control motor 114, which also needs to be controlled by a controller. That is to say, under normal circumstances, the voltage across the fixed resistor can provide a trigger on voltage for the base and emitter of the NPN transistor. When the resistance of the strain gauge exceeds the range, the potential difference across the fixed resistor decreases, resulting in a cutoff between the collector and emitter of the NPN transistor, causing the control motor 114 to be unable to receive power.

[0028] Only when the control motor 114 is in working state (a heat sink is required for the control motor 114), the control motor 114 can apply a torque to the control gear 118, which will limit the rotation of the control gear 117, thereby limiting the rotation of the planet carrier 119 (the control gear 117 and the planet carrier 119 are fixed). If the control motor 114 has no electricity, there will be no torque. At this time, the planet carrier 119 is in a free rotation state (the transmission resistance is ignored here), so the power from the output shaft of the drive motor 113 cannot be fully transmitted to the clamping sleeve 126, but is distributed to the planet carrier 119, and then distributed to the output shaft of the control motor 114 through the control gear 117 and the control gear 118. At this time, the torque rotating on the bolt will be greatly reduced, thereby preventing the occurrence of the phenomenon of the blade of the tool 109.

[0029] The rotating disk 132 can be provided to allow the fallen debris to be thrown away to prevent a reduction in the cleaning amount of the clamping sleeve 126. A protective baffle needs to be provided on the outer side of the rotating disk 132 to prevent flying debris from causing harm to surrounding personnel.

Claims

1. A high temperature resistant alloy bolt thread processing equipment, characterized in that: The invention comprises a thread cutting plate (107), on which a tool mounting frame (110) for fixing a tool (109) is movably mounted via a tool moving platform (108), the tool (109) being composed of a tool handle and a tool head, an embedding groove (111) being provided on the tool handle of the tool (109), and a strain gauge being provided in the embedding groove (111); An outer ring gear (122) is also rotatably mounted on the thread cutting plate (107), a support frame (116) is fixedly mounted on the thread cutting plate (107), a planet carrier (119) is rotatably mounted on the support frame (116), the planet carrier (119) is located on a side of the support frame (116) close to the thread cutting plate (107), three planetary gears (121) are rotatably mounted on the planet carrier (119), the three planetary gears (121) mesh with the outer ring gear (122) for transmission, and a central gear (120) is also meshed at the position of the rotation center of the three planetary gears (121), and a regulating toothed disc (117) fixed to the planet carrier (119) is provided on a side of the support frame (116) away from the thread cutting plate (107); A protective panel (115) is also fixedly mounted on the support frame (116) or the thread cutting plate (107), a gap is provided between the protective panel (115) and the thread cutting plate (107), and a control motor (114) is fixedly mounted on the protective panel (115), and a control gear (118) meshing with the control gear disc (117) is fixedly mounted on the output shaft of the control motor (114); A drive motor cover (112) is also fixedly mounted on the thread cutting plate (107), a drive motor (113) is fixedly mounted inside the drive motor cover (112), an output shaft of the drive motor (113) is fixedly matched with a central gear (120), and an output shaft of the drive motor (113) is in a rotational / non-matching relationship with a regulating gear disc (117) and a planet carrier (119); A driven toothed disc (125) is rotatably mounted on the thread cutting plate (107), and a driving toothed disc (123) is rotatably mounted between the protection panel (115) and the thread cutting plate (107). The driving toothed disc (123) and the outer ring gear (122) are fixed as a whole via a rotating shaft, and the driving toothed disc (123) and the driven toothed disc (125) are matched via a chain (124). A clamping sleeve (126) is fixedly mounted on the driven toothed disc (125), and three equidistantly arranged clamping heads (129) are slidably mounted in the radial direction of the clamping sleeve (126), and each clamping head (129) is provided with a sliding pin (131). A clamping drive ring (127) is also rotatably mounted on the outer circumferential surface of the clamping sleeve (126), and three inclined slide rail grooves (130) are provided on the clamping drive ring (127), wherein the sliding pin (131) is slidably matched with the corresponding slide rail grooves (130) to drive the clamping head (129) to move along the radial direction of the clamping sleeve (126); The potential difference at both ends of the strain gauge controls the on and off of the control motor (114). When the control motor (114) has no electricity, the power on the output shaft of the drive motor (113) is distributed to the output shaft of the control motor (114), and the rotating torque on the bolt will be reduced.

2. The high temperature resistant alloy bolt thread processing equipment according to claim 1 is characterized in that: The clamping sleeve (126) is also provided with a groove, in which a clamping electric cylinder (128) is arranged, a telescopic tube of the clamping electric cylinder (128) is movably connected to the clamping sleeve (126), and a telescopic rod of the clamping electric cylinder (128) is movably connected to a clamping drive ring (127) for driving the clamping drive ring (127) to rotate on the clamping sleeve (126).

3. The high temperature resistant alloy bolt thread processing equipment according to claim 2 is characterized in that: A plurality of rotating disks (132) are fixedly mounted on the upper surface of the clamping sleeve (126), and a shielding plate (133) is fixedly mounted on the driving motor cover (112), and the shielding plate (133) is not in contact with the rotating disk (132).

4. The high temperature resistant alloy bolt thread processing equipment according to claim 3 is characterized in that: A feeding tube (102) is arranged below the thread cutting plate (107), the top end of the feeding tube (102) is arranged with an inclined surface, and a discharge shielding plate (104) is overlapped on the inclined surface, the discharge shielding plate (104) is rotatably mounted on a discharge shielding plate bracket (103), and the discharge shielding plate bracket (103) is fixed on the feeding tube (102), wherein a torsion spring is arranged at the rotation connection between the discharge shielding plate (104) and the discharge shielding plate bracket (103).

5. The high temperature resistant alloy bolt thread processing equipment according to claim 4 is characterized in that: A feeding cylinder (101) is fixedly mounted at the bottom of the feeding tube (102); a telescopic rod of the feeding cylinder (101) is located inside the feeding tube (102); a top platform (106) is provided at the end of the telescopic rod of the feeding cylinder (101) for lifting bolts; and a feeding window (105) for placing bolts is also provided on the feeding tube (102).

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