Positioning and clamping mechanism for grease fitting thread machining

Abstract

The utility model discloses a locating and clamping mechanism for grease nipple thread machining, which comprises a machining table, a material guiding device, a driving device, a thread turning machine, a mounting frame and a gas cap device, the material guiding device is fixedly mounted in the middle of the upper end of the machining table, a plurality of material placing devices are arranged on the material guiding device, and grease nipple seats are respectively placed on the material placing devices. The material containing device is in transmission connection with the driving device, the driving device is fixedly installed on the machining table in an embedded mode, a mounting frame is fixedly connected to the position, on one side of the material guiding device, of the machining table, a thread turning machine is fixedly connected to the mounting frame, a gas jacking device is fixedly connected to one side of the upper end of the mounting frame, and the tail end of the gas jacking device abuts against the top of the oil nozzle base. The utility model aims to provide the positioning and clamping mechanism which can realize accurate positioning, efficient clamping and stable rotary machining of the oil nozzle seat.

Description

Technical Field

[0001] This utility model relates to the technical field of grease nipple processing equipment, specifically a positioning and clamping mechanism for grease nipple thread processing. Background Technology

[0002] Grease nipples are common lubrication components in mechanical equipment. Their nipple seats typically need to be fixedly installed on the oil filling holes of the equipment via external threads to achieve stable sealing and connection. Existing technology provides a grease nipple structure including a nipple seat, a quick-connect fitting, and a nipple head. During the machining of the nipple seat, the machining accuracy of the external threads directly affects its installation reliability and sealing performance. Traditional external thread machining methods usually involve manually clamping or using general-purpose jigs to fix the nipple seat, followed by turning on a lathe. However, this method has the following problems:

[0003] Insufficient positioning accuracy: The structure of the oil nozzle seat includes complex features such as threaded tubes, mounting bases and fixed pin holes. General-purpose fixtures cannot achieve precise positioning, which can easily lead to deviations in thread processing and affect the assembly effect.

[0004] Low clamping efficiency: Manual clamping requires repeated adjustment of the position of the nozzle seat and ensuring that the pin hole is aligned with the fixture. The operation is cumbersome and time-consuming, making it difficult to meet the needs of mass production.

[0005] Poor stability: During the machining process, the oil nozzle seat may shift due to uneven clamping force or rotational vibration, resulting in unstable thread turning quality and even scrap.

[0006] To address the aforementioned issues, the existing technology lacks a dedicated positioning and clamping mechanism capable of efficiently and accurately machining the external threads of the nozzle seat. Utility Model Content

[0007] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a positioning and clamping mechanism that can achieve precise positioning, efficient clamping and stable rotational machining of the nozzle seat.

[0008] The technical solution adopted by this utility model to achieve the above-mentioned objectives is as follows: First, in this utility model, the grease nipple to be processed includes a grease nipple seat, a quick-connect insert, and a grease nipple head. The grease nipple seat is fixedly installed on the oil filling hole of the equipment by a thread, while the grease nipple head is quickly installed on the grease nipple seat by a quick-connect insert. The grease nipple seat includes a check valve, a threaded tube, and a mounting base. The lower end of the threaded tube is fixedly connected to the check valve, and the upper end of the check valve is fixedly connected to the mounting base. The upper end of the mounting base has a mounting groove, and the middle part of the mounting groove has a slot hole, which communicates with the threaded tube. The quick-connect insert includes a connector, a mounting block, and a locking element. The lower end of the mounting block is fixedly connected to the connector, which passes through the slot hole and is inserted into the threaded tube. The mounting block is rotatably connected to the mounting groove, and the upper end of the mounting block extends out of the mounting groove and is fixedly connected to the locking element. The upper end of the locking element is fixedly connected to the grease nipple head. This utility model is aimed at the positioning and clamping operation during the processing of the external thread of the grease nipple seat.

[0009] A positioning and clamping mechanism for thread machining of grease nipples specifically includes a machining table, a guide device, a drive device, a thread turning machine, a mounting frame, and an air-cushioning device. The guide device is fixedly installed at the upper center of the machining table, enabling the rotational transport of the grease nipple seat. The guide device is equipped with several placement devices, each holding a grease nipple seat for relative installation. The placement devices are connected to the drive device; in use, the drive device rotates the placement devices, which in turn rotate the grease nipple seat, thus achieving thread machining of the grease nipple seat. The drive device is embedded in the machining table. A mounting frame is fixedly connected to one side of the machining table of the guide device, and a thread turning machine is fixedly connected to the mounting frame for thread machining of the grease nipple seat. An air-cushioning device is fixedly connected to one side of the mounting frame, with its end abutting against the top of the grease nipple seat for clamping and fixing, while ensuring the grease nipple seat can be rotated for machining.

[0010] In the above technical solution, the material guiding device includes a rotating disk, a first thrust bearing, a second thrust bearing, a first rotating shaft, a first gear, a second gear, and a first motor. The rotating disk is rotatably connected to the upper end of the processing table. The first thrust bearing and the second thrust bearing are fixedly connected between the rotating disk and the processing table, respectively. The second thrust bearing is sleeved inside the first thrust bearing. A plurality of material placement devices are rotatably connected to the rotating disk located between the first thrust bearing and the second thrust bearing. The first rotating shaft is fixedly connected to the middle of the lower end of the rotating disk. The first gear is fixedly connected to the other end of the first rotating shaft. The first gear meshes with the second gear, and both the first gear and the second gear are rotatably connected inside the processing table. The second gear is fixedly connected to the first motor, and the first motor is fixedly connected to the bottom of the processing table.

[0011] In the above technical solution, the material placement device includes a plug rod, a material placement seat, a positioning pin, a rotating disk, a second rotating shaft, a sliding bearing, and a connector. The rotating disk has several mounting holes, and a sliding bearing is fixedly connected in each mounting hole. The second rotating shaft is rotatably connected in the sliding bearing. The rotating disk is fixedly connected to the upper end of the second rotating shaft. The material placement seat is fixedly connected to the middle of the upper end of the rotating disk. The plug rod is fixedly connected to the middle of the upper end of the material placement seat. Several positioning pins are fixedly connected to the upper end of the material placement seat, and the positioning pins are evenly surrounding the plug rod. The connector is fixedly connected to the lower end of the second rotating shaft. A spline groove is formed at the lower end of the connector. One end of the driving device is connected to the spline groove.

[0012] In the above technical solution, the driving device includes a second motor, a lifting frame, a hydraulic cylinder, a sliding guide column, a movable plate, a third rotating shaft, and a spline head. A storage groove is provided on the machining table near the mounting frame, and a movable groove is provided on the machining table below the storage groove. A sliding sleeve hole is provided between the movable groove and the storage groove. A third rotating shaft is slidably connected within the sliding sleeve hole. A spline head is fixedly connected to the upper end of the third rotating shaft, and the spline head mates with the spline groove at the lower end of the connector. A movable plate is slidably connected within the movable groove, and a spline head is located at the lower end of the movable plate. A second motor is fixedly connected to the main body. The third rotating shaft passes through the movable plate and is connected to the second motor. The lower end of the second motor is fixedly connected to the lifting frame. Hydraulic cylinders are fixedly connected to both ends of the lifting frame. The other end of the hydraulic cylinder is fitted into the processing table. Two sets of symmetrical sliding guide columns are fixedly connected to the inner wall of the movable groove. Symmetrical sliding grooves are opened on the movable plate. The sliding guide columns are slidably connected in the sliding grooves. Two sets of symmetrical sliding guide holes are opened on the lifting frame. The sliding guide columns extend out of the movable groove and are slidably connected in the sliding guide holes.

[0013] In the above technical solution, the air-jacking device includes a pneumatic telescopic rod and an air-jacking pin. The pneumatic telescopic rod is fixedly connected to one side of the upper end of the mounting frame, and the air-jacking pin is fixedly connected to the top end of the pneumatic telescopic rod. The air-jacking pin abuts against the top of the nozzle seat.

[0014] The beneficial effects of this utility model are:

[0015] 1. Improved machining accuracy: This utility model ensures that the oil nozzle seat is fixed in position during machining by precisely matching the positioning pin in the material feeding device with the positioning pin hole of the oil nozzle seat, avoiding thread machining deviation and significantly improving the machining accuracy and consistency of the thread.

[0016] 2. Improve production efficiency: The feeding device, together with the drive device, realizes the automatic rotational transmission of the nozzle seat and the rotational processing of the feeding device, reducing manual intervention and enabling multiple nozzle seats to be processed continuously, which greatly improves the efficiency of batch production.

[0017] 3. Enhanced machining stability: The air jack applies stable axial pressure to the oil nozzle seat during machining, preventing vibration and deviation, ensuring a smooth thread turning process, and improving the quality of the finished product.

[0018] 4. Reduced operational difficulty: The spline connection drives the material feeding device to rotate, simplifying the clamping process. Operators only need to place the nozzle seat to complete the positioning and processing, reducing human adjustment errors.

[0019] 5. Extend equipment life: The first and second thrust bearings support the smooth rotation of the rotating disk, reduce friction loss, reduce equipment maintenance frequency, and extend the overall service life. Attached Figure Description

[0020] Figure 1 This is a top-view three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below;

[0022] Figure 3 This is a schematic cross-sectional view of the present invention.

[0023] Figure 4 for Figure 3 Detailed structural diagram of part A1 in the middle;

[0024] Figure 5 This is a schematic diagram of the disassembled structure of the drive device of this utility model;

[0025] Figure 6 This is a schematic diagram of the nozzle seat structure of this utility model.

[0026] In the diagram: 1. Machining table; 2. Material guiding device; 3. Drive device; 4. Thread turning machine; 5. Mounting bracket; 6. Air jack device; 7. Material placement device; 8. Oil nozzle seat; 101. Rotary disc; 102. First thrust bearing; 103. Second thrust bearing; 104. First rotating shaft; 105. First gear; 106. Second gear; 107. First motor; 201. Connecting rod; 202. Material placement seat; 203. Positioning pin; 204. Rotary disc; 205. Second rotating shaft; 206. Sliding bearing; 207. Connector; 208. Spline groove; 301. Second motor; 302. Lifting frame; 303. Hydraulic cylinder; 304. Sliding guide column; 305. Movable plate; 306. Third rotating shaft; 307. Spline head; 308. Storage groove; 309. Movable groove; 401. Pneumatic telescopic rod; 402. Air jack pin; 501. Mounting seat; 502. Threaded pipe; 503. Anti-reverse component; 504. Mounting groove; 505. Fixed pin hole. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] Please see Figure 1-5 Firstly, in this utility model, the grease nipple to be processed includes a grease nipple seat 8, a quick-connect fitting, and a grease nipple head. The grease nipple seat 8 is threadedly fixed to the grease filling hole of the equipment, while the grease nipple head is quickly installed on the grease nipple seat 8 via a quick-connect fitting. The grease nipple seat 8 includes a check valve 503, a threaded tube 502, and a mounting base 501. The lower end of the threaded tube 502 is fixedly connected to the check valve 503, and the upper end of the check valve 503 is fixedly connected to the mounting base 501. The upper end of the mounting base 501 has a mounting groove 504, and a insertion part is formed in the middle of the mounting groove 504. The slot and groove are connected to the threaded tube 502. Several fixed pin holes 505 are opened in the mounting groove 504 around the slot. The quick-connect includes a plug tube, a mounting block, and a locking element. The lower end of the mounting block is fixedly connected to the plug tube. After passing through the slot, the plug tube is inserted into the threaded tube 502. The mounting block is rotatably connected in the mounting groove 504. The upper end of the mounting block passes through the mounting groove 504 and is fixedly connected to the locking element. The upper end of the locking element is fixedly connected to the oil nozzle head. This utility model is aimed at the positioning and clamping operation during the external thread processing of the oil nozzle seat 8.

[0029] A positioning and clamping mechanism for machining grease nipple threads includes a machining table 1, a guide device 2, a drive device 3, a thread turning machine 4, a mounting bracket 5, and an air-lift device 6. The guide device 2 is fixedly mounted on the upper center of the machining table 1, enabling the rotational transport of the grease nipple seat 8. The guide device 2 is equipped with several placement devices 7, each holding a grease nipple seat 8, allowing for relative mounting of the grease nipple seats 8. The placement devices 7 are connected to the drive device 3, and in use, the drive device 3 can rotate the placement devices 7. The feeding device 7 can drive the oil nozzle seat 8 to rotate, thereby realizing the thread processing of the oil nozzle seat 8. The drive device 3 is embedded in the processing table 1. The processing table 1 on one side of the guide device 2 is fixedly connected to the mounting frame 5. The thread turning machine 4 is fixedly connected to the mounting frame 5. The thread turning machine 4 is used to realize the thread turning of the oil nozzle seat 8. The upper side of the mounting frame 5 is fixedly connected to the air lifting device 6. The end of the air lifting device 6 abuts against the top of the oil nozzle seat 8 to clamp and fix the oil nozzle seat 8, while ensuring that the oil nozzle seat 8 can be rotated for processing.

[0030] In the above technical solution, the material guiding device 2 includes a rotating disk 101, a first thrust bearing 102, a second thrust bearing 103, a first rotating shaft 104, a first gear 105, a second gear 106, and a first motor 107. The rotating disk 101 is rotatably connected to the upper end of the processing table 1. The first thrust bearing 102 and the second thrust bearing 103 are fixedly connected between the rotating disk 101 and the processing table 1, respectively. The second thrust bearing 103 is sleeved inside the first thrust bearing 102. A plurality of material placing devices 7 are rotatably connected to the rotating disk 101 located between the first thrust bearing 102 and the second thrust bearing 103. The first rotating shaft 104 is fixedly connected to the middle of the lower end of the rotating disk 101. The first gear 105 is fixedly connected to the other end of the first rotating shaft 104. The first gear 105 meshes with the second gear 106. The first gear 105 and the second gear 106 are both rotatably connected inside the processing table 1. The second gear 106 is fixedly connected to the first motor 107, which is fixedly connected to the bottom of the processing table 1. In use, the oil nozzle seats 8 are placed one by one on the material placement device 7, and then the first motor 107 is started. The first motor 107 drives the second gear 106 to rotate, and the second gear 106 drives the first gear 105 to rotate through meshing. The first gear 105 drives the rotating disk 101 to rotate through the first rotating shaft 104. The rotating disk 101 drives the material placement device 7 to rotate, so that the material placement device 7 and the oil nozzle seats 8 rotate to one side of the thread turning machine 4, which facilitates the thread turning operation of the oil nozzle seats 8. In this process, the first thrust bearing 102 and the second thrust bearing 103 are both used to realize the rotation bearing of the rotating disk 101.

[0031] In the above technical solution, the material placement device 7 includes a connecting rod 201, a material placement seat 202, positioning pins 203, a rotating disk 204, a second rotating shaft 205, a sliding bearing 206, and a connector 207. The rotating disk 101 has several mounting holes, and a sliding bearing 206 is fixedly connected to each mounting hole. The second rotating shaft 205 is rotatably connected to the sliding bearing 206. The rotating disk 204 is fixedly connected to the upper end of the second rotating shaft 205. The material placement seat 202 is fixedly connected to the middle of the upper end of the rotating disk 204. The connecting rod 201 is fixedly connected to the middle of the upper end of the material placement seat 202, and several positioning pins 203 are fixedly connected to the upper end of the material placement seat 202. 3. The positioning pin 203 is evenly surrounded around the plug rod 201. The lower end of the second rotating shaft 205 is fixedly connected to the connector 207. The lower end of the connector 207 is provided with a spline groove 208. One end of the drive device 3 is connected to the spline groove 208. In use, the threaded tube 502 in the nozzle seat 8 is inserted into the plug rod 201, and the mounting groove 504 at the lower end of the mounting base 501 is fitted into the material placement base 202. Rotating the nozzle seat 8 makes the positioning pin 203 face the fixed pin hole 505, so that the positioning pin 203 is inserted into the fixed pin hole 505 for positioning the nozzle seat 8 installed on the material placement device 7.

[0032] In the above technical solution, the drive device 3 includes a second motor 301, a lifting frame 302, a hydraulic cylinder 303, a sliding guide column 304, a movable plate 305, a third rotating shaft 306, and a spline head 307. A storage groove 308 is provided on the processing table 1 near the mounting frame 5. A movable groove 309 is provided on the processing table 1 below the storage groove 308. A sliding sleeve hole is provided between the movable groove 309 and the storage groove 308. The third rotating shaft 306 is slidably connected within the sliding sleeve hole. The upper end of the third rotating shaft 306 is fixedly connected to... Spline head 307 mates with spline groove 208 at the lower end of connector 207. Movable plate 305 is slidably connected within movable groove 309. A second motor 301 is fixedly connected to the lower center of movable plate 305. A third rotating shaft 306 passes through movable plate 305 and connects to the second motor 301. The lower end of the second motor 301 is fixedly connected to lifting frame 302. Hydraulic cylinders 303 are fixedly connected to both ends of lifting frame 302. The other end of each hydraulic cylinder 303 is fitted into processing table 1. Two sets of symmetrical sliding guide pillars 304 are fixedly connected to the inner wall of the groove 309. The movable plate 305 has symmetrical sliding grooves, and the sliding guide pillars 304 are slidably connected in the sliding grooves. The lifting frame 302 has two sets of symmetrical sliding guide holes. The sliding guide pillars 304 extend out of the movable groove 309 and are slidably connected in the sliding guide holes. In use, when the material placement device 7 installed on the rotating disk 101 places the oil nozzle seat 8, the oil nozzle seat 8 with the machining is rotated to one side of the thread turning machine 4, and then the hydraulic cylinder 303 drives the lifting frame 302 upward. The lifting frame 302 moves the second motor 301 upward, and the second motor 301 moves the third rotating shaft 306 upward, so that the spline head 307 is engaged with the spline groove 208 at the lower end of the connector 207. Then, the second motor 301 can drive the third rotating shaft 306 to rotate, and the third rotating shaft 306 drives the spline head 307 and the connector 207 to rotate. Then, the connector 207 drives the material feeding device 7 and the oil nozzle seat 8 to rotate, so as to facilitate the thread turning machine 4 to perform turning processing on the oil nozzle seat 8.

[0033] In the above technical solution, the air-lift device 6 includes a pneumatic telescopic rod 401 and an air-lift pin 402. The pneumatic telescopic rod 401 is fixedly connected to one side of the upper end of the mounting frame 5. The air-lift pin 402 is fixedly connected to the end of the push rod of the pneumatic telescopic rod 401. The air-lift pin 402 abuts against the top of the oil nozzle seat 8. When in use, on the oil nozzle seat 8 that needs to be machined, the pneumatic telescopic rod 401 drives the air-lift pin 402 to move downward, so that the air-lift pin 402 presses against the oil nozzle seat 8, so that the oil nozzle seat 8 is tightly fixed on the material feeding device 7.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A positioning and clamping mechanism for machining grease nipple threads, comprising a machining table (1), a material guiding device (2), a driving device (3), a thread turning machine (4), a mounting bracket (5), and an air-lift device (6), characterized in that: A material guide device (2) is fixedly installed at the upper middle part of the processing table (1). Several material placement devices (7) are provided on the material guide device (2). Oil nozzle seats (8) are placed on the material placement devices (7). The material placement devices (7) are connected to the drive device (3) for transmission. The drive device (3) is embedded in the processing table (1). A mounting frame (5) is fixedly connected on the processing table (1) on one side of the material guide device (2). A thread turning machine (4) is fixedly connected on the mounting frame (5). An air lifting device (6) is fixedly connected on one side of the upper end of the mounting frame (5). The end of the air lifting device (6) abuts against the top of the oil nozzle seat (8).

2. The positioning and clamping mechanism for machining grease nipple threads according to claim 1, characterized in that: The material guiding device (2) includes a rotating disk (101), a first thrust bearing (102), a second thrust bearing (103), a first rotating shaft (104), a first gear (105), a second gear (106), and a first motor (107). The rotating disk (101) is rotatably connected to the upper end of the processing table (1). The first thrust bearing (102) and the second thrust bearing (103) are fixedly connected between the rotating disk (101) and the processing table (1). The second thrust bearing (103) is sleeved inside the first thrust bearing (102) and is located between the first thrust bearing (102) and the second thrust bearing (107). A plurality of material placement devices (7) are rotatably connected to the rotating disk (101) between the push bearings (103). A first rotating shaft (104) is fixedly connected to the middle of the lower end of the rotating disk (101). A first gear (105) is fixedly connected to the other end of the first rotating shaft (104). The first gear (105) meshes with a second gear (106). The first gear (105) and the second gear (106) are both rotatably connected inside the processing table (1). The second gear (106) is fixedly connected to a first motor (107). The first motor (107) is fixedly connected to the bottom of the processing table (1).

3. The positioning and clamping mechanism for machining grease nipple threads according to claim 2, characterized in that: The feeding device (7) includes a plug rod (201), a feeding seat (202), a positioning pin (203), a rotating disk (204), a second rotating shaft (205), a sliding bearing (206), and a connector (207). The rotating disk (101) has several mounting holes. A sliding bearing (206) is fixedly connected to each mounting hole. A second rotating shaft (205) is rotatably connected to each sliding bearing (206). The upper end of the second rotating shaft (205) is fixedly connected to the rotating disk (204). 4) A material placement seat (202) is fixedly connected to the middle of the upper end. A plug rod (201) is fixedly connected to the middle of the upper end of the material placement seat (202). Several positioning pins (203) are fixedly connected to the upper end of the material placement seat (202). The positioning pins (203) are evenly surrounded around the plug rod (201). A connector (207) is fixedly connected to the lower end of the second rotating shaft (205). A spline groove (208) is opened at the lower end of the connector (207). One end of the driving device (3) is connected to the spline groove (208).

4. The positioning and clamping mechanism for machining grease nipple threads according to claim 1, characterized in that: The drive device (3) includes a second motor (301), a lifting frame (302), a hydraulic cylinder (303), a sliding guide column (304), a movable plate (305), a third rotating shaft (306), and a spline head (307). A storage slot (308) is provided on the processing table (1) near the mounting frame (5). A movable slot (309) is provided on the processing table (1) below the storage slot (308). A sliding sleeve hole is provided between the movable slot (309) and the storage slot (308). The third rotating shaft (306) is slidably connected in the sliding sleeve hole. A spline head (307) is fixedly connected to the upper end of the third rotating shaft (306). The spline head (307) cooperates with the spline groove (208) at the lower end of the connector (207). A movable plate (305) is slidably connected in the movable slot (309). A second motor (301) is fixedly connected to the middle of the lower end of the movable plate (305). The third rotating shaft (306) passes through the movable plate (305) and is connected to the second motor (301). The lower end of the second motor (301) is fixedly connected to the lifting frame (302). Hydraulic cylinders (303) are fixedly connected to both ends of the lifting frame (302). The other end of the hydraulic cylinder (303) is fitted into the processing table (1). Two sets of symmetrical sliding guide columns (304) are fixedly connected to the inner wall of the movable groove (309). A symmetrical sliding groove is opened on the movable plate (305). The sliding guide column (304) is slidably connected in the sliding groove. Two sets of symmetrical sliding guide holes are opened on the lifting frame (302). The sliding guide column (304) extends out of the movable groove (309) and is slidably connected in the sliding guide hole.

5. The positioning and clamping mechanism for grease nipple thread processing according to claim 1, characterized in that: The air-lift device (6) includes a pneumatic telescopic rod (401) and an air-lift pin (402). The pneumatic telescopic rod (401) is fixedly connected to one side of the upper end of the mounting frame (5). The air-lift pin (402) is fixedly connected to the top end of the pneumatic telescopic rod (401). The air-lift pin (402) abuts against the top of the nozzle seat (8).

Images