A clamping device for milling precision parts

Abstract

The present invention relates to the field of precision parts milling processing technology, and in particular to a precision parts milling processing clamping device, including a base, a vertical plate symmetrically fixedly connected to the front and rear upper sides of the middle part of the base, a main shaft rotating and penetratingly installed between the centers of the front and rear vertical plates, and locking mechanisms are provided on the front and rear vertical plates, the front locking mechanism is used to lock the center hole of the gear mold, and the rear locking mechanism is used to lock the center hole of the gear blank. The indexing and positioning assembly adopted by the present invention can lock gear molds of different diameters and different tooth groove sizes, and index, position and lock the coaxial gear blank through the tooth groove locking of the gear mold. By selecting gear molds of different specifications, the indexing and positioning requirements for processing gear blanks of different specifications are met, the adaptability is high, and the overall operation process is convenient and fast, and the structure is simple.

Description

Technical Field

[0001] The invention relates to the technical field of precision part milling processing, and in particular to a precision part milling processing clamping device. Background Art

[0002] Precision parts refer to components that require very high precision and high quality standards during the manufacturing process. Precision parts are usually used in high-precision mechanical equipment, instrumentation, aerospace, medical equipment and other fields, and have strict requirements on size, shape, surface roughness, etc. For example, bearings, gears, screws and guide rails in high-precision mechanical equipment, among which gears are the most common precision parts. There are many gear styles, and spur gears are one of the most commonly used gear styles.

[0003] Spur gears are generally manufactured by milling, and a clamping device is used during the machining process. The clamping device is usually a dividing clamp, and the dividing plate in the dividing clamp is used to divide the gear blank to be machined. However, the dividing range of the dividing plate is limited, and it is suitable for machining gears with a conventional number of teeth. When machining gears with a large or small number of teeth, the common dividing plate is difficult to meet the dividing requirements and is not suitable enough. At the same time, the existing clamping device adopts an inner hole fixing method for the gear blank, but the gear blank is also subjected to an axial tangential force when being milled. Under the action of this force, the gear blank may produce a slight axial movement, and the cutting path of the milling tool is fixed. Therefore, the slight offset of the gear blank is not conducive to ensuring sufficient milling of the milling tool. Summary of the invention

[0004] Technical problem to be solved: The present invention provides a precision parts milling clamping device, which can solve the above-mentioned problems.

[0005] Technical solution: In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a precision parts milling processing clamping device, including a base, a vertical plate is symmetrically fixedly connected to the front and rear sides of the middle upper side of the base, a main shaft is rotated and installed through the centers of the front and rear vertical plates, and locking mechanisms are provided on the front and rear vertical plates. The front locking mechanism is used to lock the center hole of the gear mold, and the rear locking mechanism is used to lock the center hole of the gear blank.

[0006] The front and rear locking mechanisms both include an inner hole locking assembly for internal support arranged at the corresponding ends of the main shaft, the front locking mechanism also includes a dividing positioning assembly arranged on the left side of the front vertical plate and used to lock the tooth position of the gear mold, the rear locking mechanism also includes an axial locking assembly symmetrically arranged on the rear vertical plate and used to limit the axial movement of the gear blank, and a rotating assembly for controlling the rotation of the main shaft is arranged between the front and rear vertical plates.

[0007] The indexing and positioning assembly includes a hollow movable seat movably arranged on the left part of the front vertical plate, a movable cylinder is slidably connected between the front ends of the left and right side walls of the movable seat and penetrates through the movable cylinder, a limiting ring located inside the movable seat is fixedly connected to the movable cylinder, a spring sleeved on the outside of the movable cylinder is connected between the limiting ring and the left inner wall of the movable seat, a shifting sleeve is fixedly connected to the left end of the movable cylinder, and a top gear seat is symmetrically arranged on the right end of the movable cylinder.

[0008] As a preferred technical solution of the present invention, the inner hole locking assembly includes seats equidistantly distributed circumferentially on the outside of the main shaft end, a mounting strip is integrally formed on the side of the seat close to the main shaft, and a locking control component for synchronously adjusting the distance between each seat and the main shaft axis is commonly provided between the circumferentially distributed mounting strips and the main shaft.

[0009] As a preferred technical solution of the present invention, the locking control component includes a fixed ring seat fixedly connected to the main shaft, and a movable ring seat slidably connected to the main shaft through a plurality of slide grooves 2 equidistantly arranged on the side wall of the main shaft, an X-shaped hinge arm group connected to the corresponding mounting strip is hinged between the movable ring seat and the fixed ring seat, the X-shaped hinge arm group is hinged to the mounting strip through a connecting pin, the X-shaped hinge arm group is composed of two connecting arms hinged in an X shape, a slide groove 1 is arranged at one end of the mounting strip corresponding to the movable ring seat, the slide groove 1 is slidably connected to the corresponding connecting pin, a bolt column 5 located inside the main shaft is threadedly connected at the center of the movable ring seat, the bolt column 5 is rotatably connected to the end center of the main shaft, one end of the bolt column 5 extends to the outside of the main shaft and is fixedly connected to a concentric dial 5.

[0010] As a preferred technical solution of the present invention, a bolt column four is threadedly connected to the dial five, the bolt column four and the bolt column five are not cocentric, one end of the bolt column four is fixedly connected to the dial four, and a socket is provided at the end of the main shaft to be plugged into and cooperate with the other end of the bolt column four, and the sockets are arranged circumferentially along the dial five.

[0011] As a preferred technical solution of the present invention, an angle adjustment component for adjusting the angle between the two top gear seats is arranged inside the movable cylinder, and a distance adjustment component for controlling the movable seat to move left and right is arranged on the left vertical plate.

[0012] As a preferred technical solution of the present invention, the angle adjustment component includes two bolt columns threadedly connected to the center of the left end wall of the movable cylinder, the outer end of the two bolt columns is fixedly connected to a dial, the inner end of the bolt column extends to the interior of the movable cylinder and is rotatably connected to an adapter block, the adapter block slides and is limitedly connected in the movable cylinder, a movable head located between the top gear seats is fixedly connected to the right side of the adapter block, a gear track is symmetrically arranged at the upper and lower right ends of the movable head, the top gear seats on the upper and lower sides are rotatably connected to the right end of the movable cylinder through a turn pin, and a gear ring segment is arranged at one end of the top gear seat close to the movable head, and the gear ring segment is meshed with the corresponding gear track.

[0013] As a preferred technical solution of the present invention, the distance adjusting component includes a guide groove opened on the left part of the front side vertical plate, the guide groove is at the same height as the main shaft, the rear end of the movable seat slides and is limitedly connected in the guide groove, a bolt column is threadedly connected on the front side vertical plate, the inner end of the bolt column extends into the guide groove and is rotatably connected to the movable seat, and the outer end of the bolt column is fixedly connected to a dial.

[0014] As a preferred technical solution of the present invention, the axial locking assembly includes a bolt column three which is symmetrically threadedly connected to the rear side vertical plate, the rear end of the bolt column three is fixedly connected to a dial three, the rear side of the bolt column three near the dial three is fixedly connected to a swivel seat, a swing arm is rotatably connected to the swivel seat, and a tightening block is fixedly connected to the front end of the swing arm away from the bolt column three.

[0015] As a preferred technical solution of the present invention, the front end of the stop in the locking mechanism on the rear side is fixedly connected with a stop bar extending radially along the main axis and formed integrally.

[0016] As a preferred technical solution of the present invention, the rotating assembly includes a worm wheel fixedly connected to the middle position of the main shaft, a worm with an axis extending from left to right is meshedly connected to the lower side of the worm wheel, the worm is rotatably connected between the front and rear side vertical plates through a support plate, and one end of the worm extends to the left side of a side support plate and is fixedly connected to a rocker.

[0017] Beneficial effects: 1. The indexing and positioning assembly adopted by the present invention can lock gear molds of different diameters and different tooth groove sizes, and index, position and lock the coaxial gear blanks through the tooth groove locking of the gear molds. By selecting gear molds of different specifications, the processing indexing and positioning requirements of gear blanks of different specifications can be met. It has high adaptability, and the overall operation process is convenient and fast, and the structure is simple.

[0018] 2. The inner hole locking assembly adopted in the present invention can stably support and lock the inner holes of the gear mold and the gear blank. The inner hole locking operation process is convenient and fast, which effectively improves the assembly and disassembly efficiency of the gear mold and the gear blank and speeds up the overall work efficiency.

[0019] 3. The locking mechanism adopted in the present invention utilizes the gear mold to perform indexing locking on the gear blank for milling. The overall clamping process is convenient and quick, and can be applied to the processing of more types of gears, effectively ensuring the uniformity of the milling processing of gears in the same batch, and improving the processing quality of gear milling. In addition, the axial freedom of the gear blank is limited, and the stability during milling is high, which is beneficial to improving the milling quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure from the first viewing angle of the present invention.

[0022] Figure 2 It is a front structural schematic diagram of the present invention.

[0023] Figure 3 It is a schematic diagram of the stereoscopic structure from a second viewing angle of the present invention.

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the inner hole locking component of the present invention.

[0025] Figure 5 It is a cross-sectional view of the main shaft and the movable ring seat of the present invention.

[0026] Figure 6 It is a cross-sectional view of the movable cylinder and the movable seat of the present invention.

[0027] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure of area A in the middle.

[0028] Figure 8 It is a schematic diagram of the structure of a swing arm, a swivel seat, a limit block 1 and a limit block 2.

[0029] In the figure: 1, base; 2, vertical plate; 3, locking mechanism; 31, indexing and positioning assembly; 311, distance adjustment component; 3111, guide groove; 3112, bolt column one; 3113, dial one; 312, moving seat; 313, dial sleeve; 314, movable cylinder; 315, spring; 316, limit ring; 317, angle adjustment component; 3171, dial two; 3172, bolt column two; 3173, adapter block; 3174, top gear seat; 3175, rotating pin; 3176, gear ring segment; 3177, movable head; 3178, gear rail; 32, axial locking assembly; 321, bolt column three; 3 22. swivel seat; 323. dial three; 324. swing arm; 325. tightening block; 33. rotating assembly; 331. spindle; 332. worm gear; 333. worm; 334. rocker; 34. inner hole locking assembly; 341. seat; 342. locking control component; 3421. X-shaped hinge arm group; 3422. slide slot one; 3423. connecting pin; 3424. bolt column four; 3425. dial four; 3426. dial five; 3427. movable ring seat; 3428. fixed ring seat; 3429. bolt column five; 3430. slide slot two; 343. retaining bar; 344. mounting bar. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0031] See also Figure 1 , Figure 2 and Figure 3A precision parts milling clamping device includes a base 1, a vertical plate 2 is symmetrically fixedly connected to the upper middle side of the base 1, a main shaft 331 is installed between the centers of the front and rear vertical plates 2, and a locking mechanism 3 is arranged on the front and rear vertical plates 2. The front locking mechanism 3 is used to lock the center hole of the gear mold (the gear mold is an original gear, which is a molded gear that has been completely processed), and the rear locking mechanism 3 is used to lock the center hole of the gear blank.

[0032] See also Figure 1 , Figure 2 and Figure 3 The front and rear locking mechanisms 3 both include an inner hole locking assembly 34 for implementing internal support, which is arranged at the corresponding end of the main shaft 331. The front locking mechanism 3 also includes a graduation positioning assembly 31 arranged on the left part of the front vertical plate 2 and used to lock the tooth position of the gear mold. The rear locking mechanism 3 also includes an axial locking assembly 32 which is symmetrically arranged on the rear vertical plate 2 and used to limit the axial movement of the gear blank. A rotating assembly 33 for controlling the rotation of the main shaft 331 is arranged between the front and rear vertical plates 2.

[0033] By using the front and rear locking mechanisms 3, the gear blank can be quickly indexed and locked for milling using the gear mold.

[0034] See also Figure 1-Figure 4 The inner hole locking assembly 34 includes a stopper 341 equidistantly distributed on the outer side of the end of the main shaft 331, and a mounting strip 344 is integrally formed on the side of the stopper 341 close to the main shaft 331, and a locking control component 342 for synchronously adjusting the distance between each stopper 341 and the axis of the main shaft 331 is provided between the circumferentially distributed mounting strip 344 and the main shaft 331.

[0035] See also Figure 4 and Figure 5The locking component 342 includes a fixed ring seat 3428 fixedly connected to the main shaft 331, and a movable ring seat 3427 slidably connected to the main shaft 331 through a plurality of slide grooves 3430 equidistantly arranged on the side wall of the main shaft 331. An X-shaped hinge arm group 3421 connected to the corresponding mounting strip 344 is hinged between the movable ring seat 3427 and the fixed ring seat 3428. The X-shaped hinge arm group 3421 is hinged to the mounting strip 344 through a connecting pin 3423. 21 is composed of two connecting arms hinged in an X shape, a sliding groove 3422 is provided at one end of the mounting strip 344 corresponding to the movable ring seat 3427, the sliding groove 3422 is slidably connected to the corresponding connecting pin 3423, the center of the movable ring seat 3427 is threadedly connected to a bolt column 5 3429 located inside the main shaft 331, the bolt column 5 3429 is rotatably connected to the end center of the main shaft 331, one end of the bolt column 5 3429 extends to the outside of the main shaft 331 and is fixedly connected to a concentric dial 5 3426.

[0036] See also Figure 1-Figure 5 The dial five 3426 is threadedly connected with a bolt column four 3424, the bolt column four 3424 and the bolt column five 3429 are not cocentric, one end of the bolt column four 3424 is fixedly connected with the dial four 3425, and the end of the main shaft 331 is provided with a socket that is plugged into the other end of the bolt column four 3424, and the sockets are arranged circumferentially along the dial five 3426.

[0037] During specific operation, the rotation of bolt column five 3429 is controlled by dial five 3426, and the bolt column five 3429 drives the movable ring seat 3427 to move along the slide groove two 3430, so that the X-shaped hinge arm group 3421 is extended to the outside of the main shaft 331 as a whole, so that the mounting strip 344 drives the support seat 341 to change the distance between it and the axis of the main shaft 331, so as to achieve the internal support locking effect of center holes of different diameters, and the rotation of bolt column four 3424 is controlled by dial five 3426, and then the bolt column four 3424 is rotated to make its end part engage with the corresponding socket, so as to limit the rotation of bolt column five 3429 and prevent the locking component 342 from loosening.

[0038] See also Figure 1 , Figure 2 , Figure 3 and Figure 6 The indexing and positioning assembly 31 includes a hollow movable seat 312 movably arranged on the left part of the front side vertical plate 2, a movable cylinder 314 is slidably connected between the front ends of the left and right side walls of the movable seat 312 and penetrates through it, a limiting ring 316 located inside the movable seat 312 is fixedly connected to the movable cylinder 314, a spring 315 sleeved on the outside of the movable cylinder 314 is connected between the limiting ring 316 and the left inner wall of the movable seat 312, a shifting sleeve 313 is fixedly connected to the left end of the movable cylinder 314, and a top gear seat 3174 is symmetrically arranged at the upper and lower ends of the right end of the movable cylinder 314.

[0039] See also Figure 1 , Figure 2 , Figure 3 and Figure 6 The movable cylinder 314 is provided with an angle adjustment component 317 for adjusting the angle between the two top gear seats 3174, and the left vertical plate 2 is provided with a distance adjustment component 311 for controlling the movable seat 312 to move left and right.

[0040] During specific operation, the movable cylinder 314 is moved to the left by pulling the pull sleeve 313, so that the top tooth seat 3174 is away from the gear mold and the spring 315 is compressed to avoid interfering with the angle adjustment of the gear mold. After the angle is adjusted, the top tooth seat 3174 is automatically snapped back into any tooth groove of the gear mold through the rebound force of the spring 315; when the top tooth seat 3174 does not contact the gear mold, the gear mold is in an active state and can rotate under force; when the top tooth seat 3174 is snapped into the tooth groove of the gear mold, the gear mold is in a fixed state, and the tooth groove of the gear mold is a symmetrical structure, and the two top tooth seats 3174 are also opposite According to the structure, when the tooth groove and the two top tooth seats 3174 are not completely opposite to each other, under the action of the rebound force of the spring 315, when the top tooth seat 3174 is reset, only one top tooth seat 3174 will press against the corresponding tooth groove wall. In this state, the top tooth seat 3174 will cause the gear mold to rotate under the rebound force of the compression spring 315 and the contact cooperation with the inclined inner wall of the tooth groove until the two top tooth seats 3174 are in contact with the gear mold. In this state, the force of the two top tooth seats 3174 on the gear mold is along the radial direction of the gear mold, so as to ensure the positioning accuracy of the indexing and the limiting of the gear mold.

[0041] See also Figure 1 , Figure 3 , Figure 6 and Figure 7 The angle adjustment component 317 includes a bolt column 3172 threadedly connected to the center of the left end wall of the movable cylinder 314, the outer end of the bolt column 3172 is fixedly connected to the dial 3171, the inner end of the bolt column extends into the interior of the movable cylinder 314 and is rotatably connected to a transfer block 3173, the transfer block 3173 is slidably and limit-connected in the movable cylinder 314, a movable head 3177 located between the top gear seats 3174 is fixedly connected to the right side of the transfer block 3173, a gear rail 3178 is symmetrically arranged at the upper and lower ends of the right end of the movable head 3177, the top gear seats 3174 on the upper and lower sides are rotatably connected to the right end of the movable cylinder 314 through a rotation pin 3175, and a gear ring segment 3176 is arranged at one end of the top gear seat 3174 close to the movable head 3177, and the gear ring segment 3176 is meshed with the corresponding gear rail 3178.

[0042] During specific operation, the bolt column 3172 is controlled to rotate by the dial 2 3171, and the bolt column 3172 drives the adapter block 3173 to move in the movable cylinder 314. The movement of the adapter block 3173 drives the movable head 3177 to move to control the rack 3178 to drive the gear ring segment 3176 to rotate. The rotation of the gear ring segment 3176 drives the top gear seat 3174 to rotate and change the angle between the two top gear seats 3174, so that the two top gear seats 3174 can contact and adapt to tooth grooves of different sizes.

[0043] See also Figure 1 and Figure 3 The distance adjustment component 311 includes a guide groove 3111 opened on the left part of the front side vertical plate 2, the guide groove 3111 is at the same height as the main shaft 331, the rear end of the movable seat 312 slides and is limitedly connected in the guide groove 3111, a bolt column 3112 is threadedly connected on the front side vertical plate 2, the inner end of the bolt column 3112 extends into the guide groove 3111 and is rotatably connected to the movable seat 312, and the outer end of the bolt column 3112 is fixedly connected to a dial 3113.

[0044] During specific operation, the bolt column 1 3112 is controlled to rotate by the dial 1 3113 to drive the movable seat 312 to move along the guide groove 3111, so as to achieve the effect of implementing the interference and limiting effect on the tooth grooves of the gear molds with different diameters.

[0045] See also Figure 1 , Figure 3 and Figure 8 The axial locking assembly 32 includes a bolt column three 321 which is symmetrically threadedly connected to the rear side vertical plate 2, the rear end of the bolt column three 321 is fixedly connected to a dial three 323, the rear side of the bolt column three 321 near the dial three 323 is fixedly connected to a swivel seat 322, a swing arm 324 is rotatably connected to the swivel seat 322, and a tightening block 325 is fixedly connected to the front of one end of the swing arm 324 away from the bolt column three 321, and a ball bearing is installed on the tightening block 325 (not shown in the figure).

[0046] During specific operation, the bolt column 321 is controlled to rotate by the dial 323 to drive the rotating seat 322 to move, and the position of the rotating seat 322 in the front-to-back direction is changed, so that the pressing block 325 can contact the original gear blank; the friction between the pressing block 325 and the original gear blank is reduced by the ball bearing, so that the original gear blank can rotate freely, and the position of the pressing block 325 in the left-right direction is changed by rotating the swing arm 324 to avoid affecting the installation and removal of the original gear blank. Figure 8 The outer ring surface at the rear end of the swivel seat 322 is symmetrically fixedly connected to the limit block 1, and the rear end surface of the swing arm 324 is fixedly connected to the limit block 2 located between the limit block 1. The cooperation between the limit block 1 and the limit block 2 is used to limit the rotation range of the swing arm 324, so that the tightening block 325 remains in a state of abutting against the original gear blank.

[0047] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The front end of the stop seat 341 in the rear locking mechanism 3 is fixedly connected with a stop bar 343 which extends radially along the main shaft 331 and is integrally formed.

[0048] During specific operation, the blocking bar 343 can be used to restrict the movement of the front side of the gear blank, thereby assisting the axial locking component 32 in performing bidirectional locking.

[0049] See also Figure 1 and Figure 3 The rotating assembly 33 includes a worm gear 332 fixedly connected to the middle position of the main shaft 331, and a worm 333 with an axis extending from left to right is meshedly connected to the lower side of the worm gear 332. The worm 333 is rotatably connected between the front and rear side vertical plates 2 through a support plate. One end of the worm 333 extends to the left side of a side support plate and is fixedly connected to a rocker 334.

[0050] During operation, the worm 333 is controlled to rotate by shaking the oscillating plate 334, and the worm 333 drives the worm wheel 332 to rotate, so that the main shaft 331 rotates, thereby achieving the effect of controlling the synchronous rotation of the gear mold and the gear blank.

[0051] See also Figure 1-Figure 8 , when used: S1: first select a gear mold that matches the specifications of the gear to be processed. The gear mold can be the original gear. Then fix the gear mold and the original gear blank in corresponding positions respectively. When fixing, the bolt column 5 3429 is controlled to rotate by the dial 5 3426, and the movable ring seat 3427 is driven by the bolt column 5 3429 to move along the slide groove 2 3430, so that the X-shaped hinge arm group 3421 is extended to the outside of the main shaft 331 as a whole, so that the installation strip 344 drives the seat 341 to change the position between the main shaft 331 and the axis. The distance can achieve the inner support locking effect of center holes with different diameters. The bolt column four 3424 is rotated by controlling the dial five 3426, and the inner end of the bolt column four 3424 is pressed against the end plate of the main shaft 331. When the gear blank is fixed, the bolt column three 321 is rotated by controlling the dial three 323 to drive the rotating seat 322 to change the forward and backward position, so that the pressing block 325 is close to the gear blank. After the gear mold is fixed, the top tooth seat 3174 is automatically snapped back into any tooth groove of the gear mold through the action of the spring 315.

[0052] S2: The milling cutter is driven by the existing milling lathe to feed toward the gear blank, and then moves along the central axis direction of the gear blank to complete the cutting of the first tooth groove.

[0053] S3: Then, the movable cylinder 314 is driven to move to the left by pulling the sleeve 313, so that the top tooth seat 3174 is away from the gear mold, and then the worm 333 is controlled to rotate by shaking the shaking plate 334. The worm 333 drives the worm wheel 332 to rotate, so that the main shaft 331 rotates, and the next tooth groove of the gear mold is aligned with the top tooth seat 3174. The spring 315 is used again to make the top tooth seat 3174 automatically snap back into the current tooth groove of the gear mold.

[0054] S4: S2-S3 are continuously performed until the original gear blank is processed. When the diameter or tooth groove width of the gear mold changes, the bolt column 2 3172 is controlled to rotate by the dial 2 3171, and the bolt column 2 3172 drives the adapter block 3173 to move in the movable cylinder 314. The movement of the adapter block 3173 drives the movable head 3177 to control the rack 3178 to drive the gear ring segment 3176 to rotate. The rotation of the gear ring segment 3176 drives the two top tooth seats 3174 to change the included angle, so that the two top tooth seats 3174 can contact and adapt to tooth grooves of different sizes. The bolt column 1 3112 is controlled to rotate by the dial 1 3113 to drive the movable seat 312 to move along the guide groove 3111, so as to meet the tooth groove insertion effect of gear molds with different diameters.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A precision parts milling clamping device, comprising a base (1), characterized in that: A vertical plate (2) is symmetrically fixedly connected to the upper middle part of the base (1) in front and back directions, a main shaft (331) is installed between the centers of the front and rear vertical plates (2) and is rotatable and penetrated, and a locking mechanism (3) is provided on both the front and rear vertical plates (2), the front locking mechanism (3) is used to lock the center hole of the gear mold, and the rear locking mechanism (3) is used to lock the center hole of the gear blank; The front and rear locking mechanisms (3) each include an inner hole locking assembly (34) provided at the corresponding end of the main shaft (331) for implementing internal support, the front locking mechanism (3) further includes an indexing positioning assembly (31) provided on the left side of the front vertical plate (2) and used for locking the tooth groove position of the gear mold, the rear locking mechanism (3) further includes an axial locking assembly (32) provided symmetrically on the rear vertical plate (2) and used for limiting the axial movement of the gear blank, and a rotation assembly (33) for controlling the rotation of the main shaft (331) is provided between the front and rear vertical plates (2); The indexing and positioning assembly (31) comprises a hollow movable seat (312) movably arranged on the left side of the front side vertical plate (2); a movable cylinder (314) is slidably connected between the front ends of the left and right side walls of the movable seat (312) and penetrates through the movable cylinder (314); a limiting ring (316) located inside the movable seat (312) is fixedly connected to the movable cylinder (314); a spring (315) sleeved on the outside of the movable cylinder (314) is connected between the limiting ring (316) and the left inner wall of the movable seat (312); a shifting sleeve (313) is fixedly connected to the left end of the movable cylinder (314); and a top gear seat (3174) is symmetrically arranged at the upper and lower ends of the right end of the movable cylinder (314); By using the front and rear two locking mechanisms (3), the gear mold can be used to quickly perform indexing locking on the gear blank for milling.

2. A precision parts milling clamping device according to claim 1, characterized in that: The inner hole locking assembly (34) comprises a stopper (341) equidistantly distributed around the circumference on the outer side of the end of the main shaft (331); a mounting strip (344) is integrally formed on one side of the stopper (341) close to the main shaft (331); and a locking control component (342) for synchronously adjusting the distance between each stopper (341) and the axis of the main shaft (331) is provided between the circumferentially distributed mounting strip (344) and the main shaft (331).

3. A precision parts milling clamping device according to claim 2, characterized in that: The locking component (342) comprises a fixed ring seat (3428) fixedly connected to the main shaft (331), and a movable ring seat (3427) slidably connected to the main shaft (331) through a plurality of sliding grooves (3430) equidistantly arranged on the side wall of the main shaft (331), an X-shaped hinge arm group (3421) connected to the corresponding mounting strip (344) is hinged between the movable ring seat (3427) and the fixed ring seat (3428), the X-shaped hinge arm group (3421) being hinged to the mounting strip (344) through a connecting pin (3423), and the X-shaped hinge arm group (3421) is hinged to the mounting strip (344). 421) is composed of two connecting arms hinged in an X shape, a sliding groove (3422) is provided at one end of the mounting strip (344) corresponding to the movable ring seat (3427), the sliding groove (3422) is slidably connected to the corresponding connecting pin (3423), the center of the movable ring seat (3427) is threadedly connected to a bolt column (3429) located inside the main shaft (331), the bolt column (3429) is rotatably connected to the center of the end of the main shaft (331), and one end of the bolt column (3429) extends to the outside of the main shaft (331) and is fixedly connected to a concentric dial (3426).

4. A precision parts milling clamping device according to claim 3, characterized in that: The dial plate five (3426) is threadedly connected with a bolt column four (3424), the bolt column four (3424) and the bolt column five (3429) are not co-centric, one end of the bolt column four (3424) is fixedly connected with the dial plate four (3425), and the end of the main shaft (331) is provided with a socket that is plugged into and matched with the other end of the bolt column four (3424), and the sockets are arranged circumferentially along the dial plate five (3426).

5. The precision parts milling clamping device according to claim 1, characterized in that: An angle adjustment component (317) for adjusting the angle between the two top gear seats (3174) is provided inside the movable cylinder (314), and a distance adjustment component (311) for controlling the movable seat (312) to move leftward and rightward is provided on the left vertical plate (2).

6. A precision parts milling clamping device according to claim 5, characterized in that: The angle adjustment component (317) comprises a second bolt column (3172) threadedly connected to the center of the left end wall of the movable cylinder (314); the outer end of the second bolt column (3172) is fixedly connected to a second dial (3171); the inner end of the bolt column extends into the interior of the movable cylinder (314) and is rotatably connected to a transfer block (3173); the transfer block (3173) is slidably and positionally connected in the movable cylinder (314); and the right side of the transfer block (3173) is fixedly connected to a position A movable head (3177) is disposed between the top gear seats (3174), and a gear track (3178) is symmetrically arranged at the upper and lower ends of the right end of the movable head (3177). The top gear seats (3174) on both upper and lower sides are rotatably connected to the right end of the movable cylinder (314) through a rotating pin (3175). A gear ring segment (3176) is arranged at one end of the top gear seat (3174) close to the movable head (3177), and the gear ring segment (3176) is meshed with the corresponding gear track (3178).

7. The precision parts milling clamping device according to claim 5, characterized in that: The distance adjustment component (311) comprises a guide groove (3111) provided on the left side of the front side vertical plate (2), the guide groove (3111) being at the same height as the main shaft (331), the rear end of the movable seat (312) being slidably and position-limitingly connected in the guide groove (3111), a bolt column (3112) being threadedly connected on the front side vertical plate (2), the inner end of the bolt column (3112) extending into the guide groove (3111) and being rotatably connected to the movable seat (312), and the outer end of the bolt column (3112) being fixedly connected to a dial (3113).

8. The precision parts milling clamping device according to claim 1, characterized in that: The axial locking assembly (32) comprises a bolt column three (321) symmetrically threadedly connected to the rear side vertical plate (2); a dial three (323) is fixedly connected to the rear end of the bolt column three (321); a rotating seat (322) is fixedly connected to the rear side of the bolt column three (321) near the dial three (323); a swing arm (324) is rotatably connected to the rotating seat (322); a front end of the swing arm (324) away from the bolt column three (321) is fixedly connected to a tightening block (325); and a ball bearing is mounted on the tightening block (325).

9. The precision parts milling clamping device according to claim 2, characterized in that: The front end of the stopper (341) in the locking mechanism (3) at the rear side is fixedly connected to a stop bar (343) extending radially along the main shaft (331) and formed integrally.

10. The precision parts milling clamping device according to claim 1, characterized in that: The rotating assembly (33) comprises a worm wheel (332) fixedly connected to the middle of the main shaft (331); a worm (333) whose axis extends from left to right is meshedly connected to the lower side of the worm wheel (332); the worm (333) is rotatably connected between the front and rear side vertical plates (2) via a support plate; one end of the worm (333) extends to the left side of a side support plate and is fixedly connected to a rocker (334).

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