A lathe for processing curved surfaces of positioning pins

Abstract

This invention discloses a lathe for machining curved surfaces of positioning pins, relating to the field of machining technology. The lathe for machining curved surfaces of positioning pins includes a base mechanism and a machining assembly. The machining assembly includes a replication mechanism, which includes a housing. A sensor is fixedly embedded in the upper inner wall of the housing. An adjusting rail is fixedly embedded in the inner side wall of the housing, and a clamping bar is slidably inserted into the adjusting rail. A collar is provided inside the housing, and a ring rod for slidably inserting the clamping bar is fixedly connected to the side of the collar. A base is fixedly connected to the lower end face of the housing. Electrical rails are fixedly embedded in the inner walls of both sides of the base, and insert blocks are slidably inserted into the electrical rails. A tool body assembly is inserted into the lower side of the replication mechanism. The tool body assembly includes a tool shaft mechanism, which includes a tool shaft. A sensor head is fixedly connected to the upper end of the tool shaft. This lathe for machining curved surfaces of positioning pins can complete the machining of various eccentric positioning pins, improving the diversity and comprehensiveness of machining.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to a lathe for machining curved surfaces with positioning pins. Background Technology

[0002] Locating pins are widely used components in the mechanical field. Their main function is to achieve precise positioning and connection between parts, ensuring the relative positional accuracy of each component during assembly and operation, thereby ensuring the normal operation of the entire mechanical system. Locating pins are generally cylindrical, but some may have special structures designed at the ends or middle, such as curved surfaces, conical surfaces, or curved surfaces with special curves, to facilitate installation, fixation, or mating with other parts.

[0003] Patent CN208772464U discloses a surface machining device for an eccentric dumbbell pin. This device includes a dumbbell pin fixing device, a three-jaw chuck, a lathe center, and a lathe tool. The dumbbell pin fixing device includes a positioning sleeve, a sleeve, and two adjusting bolts. The inner holes of the positioning sleeve and the sleeve are eccentrically positioned. The positioning sleeve and the sleeve are respectively fitted and connected to both ends of the dumbbell pin. The positioning sleeve and the adjusting bolts fix both ends of the dumbbell pin. Since the center of the outer diameter of the positioning sleeve, the center of the outer diameter of the sleeve, and the center line of the first pin are on the same axis, when the three-jaw chuck drives the positioning sleeve to rotate, the axis of rotation of the three-jaw chuck is the rotation center of the first pin. Thus, the first pin can only rotate around its axis, allowing for stable machining by the lathe tool, saving auxiliary time such as clamping and alignment, and improving machining accuracy. Simultaneously, it reduces the pre-drilling of the center hole for forging the eccentric dumbbell pin, saving costs and improving efficiency.

[0004] The above technical solution can perform surface machining on eccentric positioning pins, but it can only machine eccentric positioning pins. When there are non-eccentric positioning pins with curved surfaces having special curves, the machining conditions are limited. Therefore, there is an urgent need for a lathe for machining the curved surfaces of positioning pins to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a surface machining lathe for positioning pins, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a surface machining lathe for positioning pins, comprising a base mechanism and machining components;

[0007] The base mechanism includes a base, and a fixing component for fixing a positioning pin is provided on the upper surface of the base. A movable component is mounted on the fixing component.

[0008] The processing component is movably mounted on the moving component. The processing component includes a replication mechanism, which includes a housing. A sensor is fixedly embedded in the upper inner wall of the housing, and an adjustment rail is fixedly embedded in the side inner wall of the housing. A clamping strip is slidably inserted into the adjustment rail.

[0009] A collar is provided inside the housing, and a ring rod with a sliding insertion clamp is fixedly connected to the side of the collar;

[0010] A base is fixedly connected to the lower end face of the cover, and electric rails are fixedly embedded in the inner walls of the two sides of the base, with plugs slidably inserted into the electric rails.

[0011] The replica mechanism has a blade assembly inserted into its lower side. The blade assembly includes a blade shaft mechanism, which includes a blade shaft with a fixed insertion collar. The upper end of the blade shaft is fixedly connected to a sensor head for sensing a sensor. The lower end of the blade shaft has a blade groove, in which a blade head assembly is installed.

[0012] As a preferred embodiment of the present invention, the fixing component includes a rotating component and a supporting component;

[0013] The rotary assembly includes a ring rail fixedly connected to the base, a first slider slidably inserted into the ring rail, a first motor fixedly embedded on the first slider, and the output end of the first motor extending out of the ring rail and fixedly connected to a fixed base for gripping and positioning one end of the pin shaft.

[0014] The support assembly includes a panel that is fixedly connected to the base. A first hydraulic telescopic column is fixedly connected to the surface of the panel. A conical abutment column is fixedly connected to the output end of the first hydraulic telescopic column. The abutment column is directly opposite the fixed base at the upper center position.

[0015] The moving component includes a crossbeam rail, with brackets fixedly connected to both ends of the crossbeam rail. One bracket is fixedly attached to the ring rail, and the other bracket is fixedly attached to the panel.

[0016] As a preferred embodiment of the present invention, a blade pad for protecting the blade head assembly is fixedly connected to the upper inner wall of the blade groove.

[0017] The cutter head assembly includes a first rotating shaft that passes through the cutter groove. A cutter head and an identification head that are adapted to be inserted into the cutter groove are fixedly connected to the first rotating shaft. The cutter head and the identification head are centrally symmetrical. The end of the first rotating shaft extends out of the cutter shaft and has a cross-shaped locking hole.

[0018] A second rotating shaft is inserted into the upper part of the cutter shaft. The end of the second rotating shaft extends out of the cutter shaft and is fixedly connected to a third motor mounted on the cutter shaft. The ends of the second rotating shaft and the ends of the first rotating shaft are together fitted with a chain that is movably embedded in the cutter shaft.

[0019] An air pump is fixedly embedded in the middle of the cutter shaft. Air pipes extending out of the cutter shaft are fixedly connected to both sides of the air pump. The ends of the air pipes are connected to a cylinder fixedly connected to the cutter shaft. The output end of the cylinder is adapted to insert a locking hole.

[0020] As a preferred embodiment of the present invention, a tool sleeve mechanism is provided on the outside of the tool shaft mechanism. The tool sleeve mechanism includes a tool sleeve that is sleeved onto the tool shaft, and a column is fixedly connected between the tool sleeve and the tool shaft.

[0021] The two sides of the blade sheath are respectively provided with vertical grooves for sliding insertion blocks, and springs that fit the insertion blocks are fixedly connected in the vertical grooves.

[0022] As a preferred embodiment of the present invention, a positioning mechanism is provided on the upper side of the replication mechanism. The positioning mechanism includes a second hydraulic telescopic column. The fixed end of the second hydraulic telescopic column is fixedly connected to a second slider that slides into the crossbeam rail. The output end of the second hydraulic telescopic column is fixedly connected to a second motor. The output end of the second motor is fixedly connected to a receiving plate. The receiving plate is fixedly connected to a cover.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] (1) A surface machining lathe for positioning pin shaft, which identifies and records the movement of the tool shaft through a sensor, thereby replicating the side surface of the mold, and then switching the position of the tool head and the identification head. While the tool body assembly slides along the base, the replicated data is moved up and down by the sliding of the clamping bar along the adjustment rail, thereby realizing the replication machining of the mold on the workpiece. By replicating the surface of the mold in advance, various complex surface machining of the positioning pin shaft can be realized, thereby improving the quality of the machined surface.

[0025] (2) A surface machining lathe with a positioning pin, wherein the positioning ring of the cutting head and the recognition head ensures the complete consistency of the positioning of the cutting head and the recognition head, thereby ensuring the consistency of the replication path and improving the uniformity of the machining.

[0026] (3) A surface machining lathe for positioning pin shaft, by setting the tool pad in the tool groove, when the mold is replicated, the identification head contacts the mold and the tool head is protected by the tool pad. When the positioning pin shaft is machined, the tool head contacts the positioning pin shaft and the identification head is protected by the tool pad, thereby effectively protecting the tool head assembly and extending its service life.

[0027] (4) A surface machining lathe with a positioning pin shaft, wherein the third motor of the easily damaged component is set away from the tool head assembly and the air pump is embedded in the tool shaft for protection, thereby keeping it away from machining risks during the machining process and being protected by the tool shaft and tool sleeve mechanism, thereby reducing the damage rate and lowering its maintenance cost.

[0028] (5) A surface machining lathe with positioning pin shaft, which uses a sensor to sense and identify the Y-axis data of the tool shaft when the X-axis data is fixed, and can then perform a one-to-one replication during machining. By increasing the number of positioning points of the X-axis data and Y-axis data, the actual machining accuracy can be changed, thereby realizing the switching between roughing and finishing and improving the adaptability of the machining range.

[0029] (6) A lathe for machining the curved surface of a positioning pin shaft, which drives the copying mechanism to rotate 180 degrees by a second motor, so that the other side can be processed immediately. At this time, the copying time is shortened by half during the copying process, and the processing efficiency of the positioning pin shaft with symmetrical shape can be improved.

[0030] (7) A surface machining lathe for positioning pins, for eccentric positioning pins, the X-axis data can be determined in advance by the position of the tool body assembly in the copying mechanism, and for the Y-axis data, the first motor drives the mold to rotate one revolution, and the Y-axis data of the mold one revolution is copied, so as to complete the machining of various eccentric positioning pins and improve the diversity and comprehensiveness of machining.

[0031] (8) A surface machining lathe for positioning pins, which, by setting a rotary assembly, processes the positioning pin of the central fixed seat clamp, while the positioning pin can be installed and disassembled in other positions, thereby improving the convenience and safety of loading and unloading, increasing the speed of loading and unloading, and thus improving the overall processing efficiency. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the base mechanism of the present invention;

[0034] Figure 3 This is a schematic diagram of the moving component of the present invention;

[0035] Figure 4 This is a schematic diagram of the rotary assembly of the present invention;

[0036] Figure 5 This is a schematic diagram of the support components of the present invention;

[0037] Figure 6 This is a schematic diagram of the processing components of the present invention;

[0038] Figure 7This is a schematic diagram of the positioning mechanism of the present invention;

[0039] Figure 8 This is a schematic diagram of the connection of the replication mechanism of the present invention;

[0040] Figure 9 This is a bottom view schematic diagram of the replication mechanism of the present invention;

[0041] Figure 10 This is a schematic diagram of the blade assembly of the present invention;

[0042] Figure 11 This is a schematic diagram of the tool holder mechanism of the present invention;

[0043] Figure 12 This is a schematic diagram of the cutter shaft mechanism of the present invention;

[0044] Figure 13 This is a schematic diagram of the internal structure of the cutter shaft mechanism of the present invention.

[0045] In the diagram: 1. Base mechanism; 101. Base; 102. Ring rail; 103. First slider; 104. First motor; 105. Fixed seat; 106. Panel; 107. First hydraulic telescopic column; 108. Abutment column; 109. Crossbeam rail; 110. Bracket; 2. Positioning mechanism; 201. Second hydraulic telescopic column; 202. Second slider; 203. Second motor; 204. Receiving plate; 3. Replicating mechanism; 301. Cover; 302. Sensor; 303. Adjusting rail; 304. Clamping bar; 305. Sleeve 306. Ring; 307. Base; 308. Electric rail; 309. Insert block; 4. Cutter shaft mechanism; 401. Cutter shaft; 402. Sensor head; 403. Cutter groove; 404. Cutter pad; 405. First rotating shaft; 406. Cutter head; 407. Recognition head; 408. Lock hole; 409. Second rotating shaft; 410. Third motor; 411. Chain; 412. Air pump; 413. Air pipe; 414. Cylinder; 5. Cutter sleeve mechanism; 501. Cutter sleeve; 502. Column; 503. Vertical groove; 504. Spring. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Example: Please refer to Figure 1 , Figure 2 , Figure 6 , Figure 8 , Figure 9 , Figure 10 , Figure 12 A surface machining lathe for positioning pins, comprising a base mechanism 1 and machining components;

[0048] The base mechanism 1 includes a base 101, and a fixing component for fixing the positioning pin is provided on the upper surface of the base 101. A movable component is mounted on the fixing component.

[0049] The processing component is movably mounted on the moving component. The processing component includes a replication mechanism 3. The replication mechanism 3 includes a cover 301. A sensor 302 is fixedly embedded in the upper inner wall of the cover 301. An adjustment rail 303 is fixedly embedded in the side inner wall of the cover 301. A clamping bar 304 is slidably inserted into the adjustment rail 303. The clamping bar 304 can only slide up and down along the adjustment rail 303.

[0050] A collar 305 is provided inside the cover 301, and a ring rod 306 of a sliding insertion clamping bar 304 is fixedly connected to the side of the collar 305.

[0051] A base 307 is fixedly connected to the lower end face of the cover 301. An electric rail 308 is fixedly embedded in the inner walls of the two sides of the base 307. A plug block 309 is slidably inserted into the electric rail 308.

[0052] The replica mechanism 3 has a blade assembly inserted into its lower side. The blade assembly includes a blade shaft mechanism 4. The blade shaft mechanism 4 includes a blade shaft 401 with a fixed insertion collar 305. The upper end of the blade shaft 401 is fixedly connected to a sensing head 402 for sensing the sensor 302. The lower end of the blade shaft 401 has a blade groove 403, and a blade head assembly is installed in the blade groove 403.

[0053] Please see Figure 2 , Figure 3 , Figure 4 , Figure 5 The fixed components include a rotary assembly and a support assembly;

[0054] The rotary assembly includes a ring rail 102 fixedly connected to the base 101. A first slider 103 is slidably inserted into the ring rail 102. A first motor 104 is fixedly embedded in the first slider 103. The output end of the first motor 104 extends out of the ring rail 102 and is fixedly connected to a fixed seat 105 for gripping one end of the positioning pin. Multiple fixed seats 105 are slidably inserted into the ring rail 102 through the first slider 103. The fixed seat 105 in the center grips the positioning pin for processing operations, while the fixed seats 105 in other positions are used for installing or removing the positioning pin.

[0055] The support assembly includes a panel 106 fixedly connected to the base 101. A first hydraulic telescopic column 107 is fixedly connected to the surface of the panel 106. A tapered abutment column 108 is fixedly connected to the output end of the first hydraulic telescopic column 107. The abutment column 108 is directly opposite the fixed base 105 at the center.

[0056] The moving component includes a crossbeam rail 109, with brackets 110 fixedly connected to both ends of the crossbeam rail 109. One bracket 110 is fixedly attached to the ring rail 102, and the other bracket 110 is fixedly attached to the panel 106.

[0057] Please see Figure 12 , Figure 13 A blade pad 404 for protecting the blade assembly is fixedly connected to the upper inner wall of the blade groove 403;

[0058] The cutter head assembly includes a first rotating shaft 405 that passes through the cutter groove 403. A cutter head 406 and an identification head 407 that are adapted to be inserted into the cutter groove 403 are fixedly connected to the first rotating shaft 405. The cutter head 406 and the identification head 407 are centrally symmetrical. The end of the first rotating shaft 405 extends out of the cutter shaft 401 and passes through a cross-shaped locking hole 408.

[0059] A second rotating shaft 409 is inserted into the upper part of the cutter shaft 401. The end of the second rotating shaft 409 extends out of the cutter shaft 401 and is fixedly connected to a third motor 410 mounted on the cutter shaft 401. The end of the second rotating shaft 409 and the end of the first rotating shaft 405 are together sleeved with a chain 411 that is movably embedded in the cutter shaft 401.

[0060] An air pump 412 is fixedly embedded in the middle of the cutter shaft 401. Air pipes 413 extending out of the cutter shaft 401 are fixedly connected to both sides of the air pump 412. The end of the air pipe 413 is connected to a cylinder 414 fixedly connected to the cutter shaft 401. The output end of the cylinder 414 is adapted to a locking hole 408. The cylinder 414 locks the cutter head assembly through the locking hole 408.

[0061] Please see Figure 9 , Figure 10 , Figure 11 A tool sleeve mechanism 5 is provided on the outside of the tool shaft mechanism 4. The tool sleeve mechanism 5 includes a tool sleeve 501 that is sleeved on the tool shaft 401. A column 502 is fixedly connected between the tool sleeve 501 and the tool shaft 401.

[0062] The two sides of the blade sheath 501 are respectively provided with vertical grooves 503 through which sliding insertion blocks 309 are opened. A spring 504 that fits the insertion block 309 is fixedly connected in the vertical groove 503. Initially, the insertion block 309 is in the upper part of the vertical groove 503 and the spring 504 is in the natural state.

[0063] Please see Figure 6 , Figure 7The upper side of the replication mechanism 3 is provided with a positioning mechanism 2. The positioning mechanism 2 includes a second hydraulic telescopic column 201. The fixed end of the second hydraulic telescopic column 201 is fixedly connected to the second slider 202 of the sliding crossbeam rail 109. The output end of the second hydraulic telescopic column 201 is fixedly connected to the second motor 203. The output end of the second motor 203 is fixedly connected to the receiving plate 204. The receiving plate 204 is fixedly connected to the cover 301. The receiving plate 204 and the blade tip of the cutter head 406 are directly opposite each other in the working state.

[0064] The working principle of this invention is as follows:

[0065] Before machining the positioning pin, the pre-made mold is clamped by the fixed base 105 and fed to the center position by the ring rail 102. The first hydraulic telescopic column 107 extends and abuts against the mold through the abutment column 108. The second hydraulic telescopic column 201 extends so that the recognition head 407 contacts the mold surface. The second hydraulic telescopic column 201 extends further to move the replication mechanism 3 downward. It stops when the insert block 309 slides to the middle of the vertical groove 503. Then, the insert block 309 slides along the electric rail 308, driving the cutter shaft mechanism 4 in the mold. The surface slides, and the movement of the cutter shaft 401 is identified and recorded by the sensor 302, thereby replicating the side curved surface of the mold. Then, the positions of the cutter head 406 and the identification head 407 are switched. While the cutter body assembly slides along the base 307, the replicated data is transmitted through the clamping bar 304 to slide along the adjusting rail 303, thereby moving the cutter body assembly up and down. This allows for the replication of the mold on the workpiece. By replicating the curved surface of the mold in advance, various complex curved surface processing of the positioning pin can be achieved, improving the quality of the processed curved surface.

[0066] After the recognition head 407 completes the mold replication, the air pump 412 drives the cylinder 414 to contract, the third motor 410 drives the second rotating shaft 409 to rotate, and then the chain 411 drives the first rotating shaft 405 to rotate 180 degrees, thereby switching the cutter head 406. Then, the output end of the cylinder 414 is inserted into the first rotating shaft 405 to limit the cutter head assembly. The positioning ring of the cutter head 406 and the recognition head 407 ensures the complete consistency of the positioning of the cutter head 406 and the recognition head 407, thereby ensuring the consistency of the replication path and improving the uniformity of processing.

[0067] With the tool pad 404 set in the tool groove 403, when the mold is replicated, the identification head 407 contacts the mold. At this time, the tool head 406 is protected by the tool pad 404. When the positioning pin is processed, the tool head 406 contacts the positioning pin. At this time, the identification head 407 is protected by the tool pad 404, thus effectively protecting the tool head assembly and extending its service life.

[0068] The vulnerable component, the third motor 410, is positioned away from the cutter head assembly, and the air pump 412 is embedded in the cutter shaft 401 for protection. This protects it from processing risks during the machining process, while also protecting it from the cutter shaft 401 and the cutter sleeve mechanism 5, thereby reducing the damage rate and lowering its maintenance costs.

[0069] During the mold replication process via the recognition head 407, the insert block 309 slides along the electric rail 308 to record X-axis data. The sensor 302 senses and identifies the Y-axis data of the tool axis 401 when the X-axis data is fixed. Subsequently, a one-to-one replication can be performed during processing. By increasing the number of positioning points for X-axis and Y-axis data, the actual processing accuracy can be changed, thereby enabling the switching between roughing and finishing and improving the adaptability of the processing range.

[0070] When the locating pin is symmetrical, the center point of the mold can be identified by the abutment of the abutment post 108 against the mold. Then, the tool body assembly is positioned to the center point of the mold by sliding the positioning mechanism 2 along the crossbeam rail 109 for single-sided copying. In the actual processing, after the single-sided processing of the locating pin is completed, the copying mechanism 3 is rotated 180 degrees by the second motor 203, so that the other side can be processed immediately. At this time, the copying time is shortened by half. The processing efficiency of symmetrical locating pins can be improved.

[0071] For eccentric positioning pins, the X-axis data can be determined in advance by the position of the tool body assembly in the copying mechanism 3. For the Y-axis data, the first motor 104 drives the mold to rotate one revolution, and the Y-axis data of the mold one revolution is copied. This can complete the processing of various eccentric positioning pins and improve the diversity and comprehensiveness of processing.

[0072] By setting up a rotary assembly, the positioning pin of the central fixed base 105 gripper is machined, while the positioning pins in other positions can be installed and removed, improving the convenience and safety of loading and unloading, increasing the speed of loading and unloading, and thus improving the overall processing efficiency.

[0073] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface machining lathe for positioning pins, comprising a base mechanism (1) and machining components; The base mechanism (1) includes a base (101), the upper surface of which is provided with a fixing component for fixing the positioning pin, characterized in that: The fixed component is equipped with a movable component; The processing component is movably mounted on the moving component. The processing component includes a replica mechanism (3). The replica mechanism (3) includes a cover (301). A sensor (302) is fixedly embedded in the upper inner wall of the cover (301). An adjustment rail (303) is fixedly embedded in the side inner wall of the cover (301). A clamping strip (304) is slidably inserted into the adjustment rail (303). The cover (301) is provided with a collar (305), and the side of the collar (305) is fixedly connected to the ring rod (306) of the sliding insertion clamp (304). The lower end face of the cover (301) is fixedly connected to a base (307), and electric rails (308) are fixedly embedded in the inner walls of the two sides of the base (307), and plugs (309) are slidably inserted into the electric rails (308). The replica mechanism (3) has a blade assembly inserted into its lower side. The blade assembly includes a blade shaft mechanism (4). The blade shaft mechanism (4) includes a blade shaft (401) with a fixed insertion collar (305). The upper end of the blade shaft (401) is fixedly connected to a sensing head (402) for sensing the sensor (302). The lower end of the blade shaft (401) has a blade groove (403). A blade head assembly is installed in the blade groove (403). The upper inner wall of the blade groove (403) is fixedly connected with a blade pad (404) for protecting the blade assembly. The blade assembly includes a first rotating shaft (405) that passes through the blade groove (403). A blade (406) and an identification head (407) adapted to insert into the blade groove (403) are fixedly connected to the first rotating shaft (405). The blade (406) and the identification head (407) are centrally symmetrical. The end of the first rotating shaft (405) extends out of the blade shaft (401) and is provided with a cross-shaped locking hole (408). The upper part of the cutter shaft (401) is connected to a second rotating shaft (409). The end of the second rotating shaft (409) extends out of the cutter shaft (401) and is fixedly connected to a third motor (410) mounted on the cutter shaft (401). The end of the second rotating shaft (409) and the end of the first rotating shaft (405) are together fitted with a chain (411) that is movably embedded in the cutter shaft (401). An air pump (412) is fixedly embedded in the middle of the cutter shaft (401). Air pipes (413) extending out of the cutter shaft (401) are fixedly connected to both sides of the air pump (412). A cylinder (414) fixedly connected to the cutter shaft (401) is connected to the end of the air pipe (413). The output end of the cylinder (414) is adapted to insert a locking hole (408).

2. The surface machining lathe for positioning pins according to claim 1, characterized in that: The fixing component includes a rotating component and a supporting component; The rotary assembly includes a ring rail (102) fixedly connected to the base (101), a first slider (103) is slidably inserted into the ring rail (102), a first motor (104) is fixedly embedded on the first slider (103), and the output end of the first motor (104) extends out of the ring rail (102) and is fixedly connected to a base (105) for gripping and positioning pin. The support assembly includes a panel (106) fixedly connected to the base (101), a first hydraulic telescopic column (107) fixedly connected to the surface of the panel (106), a conical abutment column (108) fixedly connected to the output end of the first hydraulic telescopic column (107), and the abutment column (108) is directly opposite to the fixed seat (105) at the upper center position.

3. The surface machining lathe for positioning pins according to claim 2, characterized in that: The moving component includes a crossbeam rail (109), with brackets (110) fixedly connected to both ends of the crossbeam rail (109). One bracket (110) is fixedly attached to the ring rail (102), and the other bracket (110) is fixedly attached to the panel (106).

4. The surface machining lathe for positioning pins according to claim 1, characterized in that: A tool sleeve mechanism (5) is provided on the outside of the tool shaft mechanism (4). The tool sleeve mechanism (5) includes a tool sleeve (501) that sleeves the tool shaft (401). A column (502) is fixedly connected between the tool sleeve (501) and the tool shaft (401). The two sides of the blade sheath (501) are respectively provided with vertical grooves (503) for sliding insertion blocks (309), and springs (504) that fit the insertion blocks (309) are fixedly connected in the vertical grooves (503).

5. A lathe for machining curved surfaces of a positioning pin according to claim 3, characterized in that: The replica mechanism (3) is provided with a positioning mechanism (2) on its upper side. The positioning mechanism (2) includes a second hydraulic telescopic column (201). The fixed end of the second hydraulic telescopic column (201) is fixedly connected to a second slider (202) of the sliding crossbeam rail (109). The output end of the second hydraulic telescopic column (201) is fixedly connected to a second motor (203). The output end of the second motor (203) is fixedly connected to a receiving plate (204). The receiving plate (204) is fixedly connected to the cover (301).

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