A modular segmented cage precision machining tool

Abstract

The present invention discloses a modular segmented retainer precision machining tool, comprising a base, a retainer blank is placed on the base, a moving module is arranged on the base, and a movable clamping module for fixing the retainer blank is arranged at the movable end of the moving module. When machining a certain pocket roller contact surface, the movable clamping module can be moved to the adjacent pocket roller contact surface through the moving module in the state of clamping the retainer blank. The present invention relates to the technical field of bearing machining equipment, and can perform mobile clamping on two adjacent pocket roller contact surfaces, thereby avoiding the pocket roller contact surface machined by the boring tool. When moving to the adjacent pocket roller contact surface, the clamping force is restored, thereby improving the clamping and fixing effect on the pocket roller contact surface machined by the retainer blank. A movable dynamic clamping is formed, and the clamping force can be adjusted during and after the movement, thereby improving the overall machining efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bearing processing equipment, in particular to a modular segmented retainer precision processing tool. Background Art

[0002] With the continuous rise of the domestic engineering machinery industry, the market demand for bearings has increased year by year. The more representative industry is the shield machine industry, whose bearings are characterized by simple structure, but large size and high processing difficulty. Especially the cage, which requires multiple processing steps and has very high requirements for equipment and tooling.

[0003] There is a large shield machine bearing cage with a segmented design. The blank is sand casting, and the pocket roller contact surface and inner and outer diameter guide surfaces are subsequently fine-machined. The unstable machining size and machining accuracy of the casting surface of the bearing cage have a great impact on the installation and positioning of the subsequent processing, so the design of the tooling is particularly important.

[0004] In actual processing, when finishing the contact surface of the pocket roller, the existing milling boring cutter will collide with the pressure plate during processing. The solution of the existing technology is to avoid the pressure plate part during processing, change the pressing position of the pressure plate after the processing is completed, and press it again, and then re-process the avoided part, which leads to a decrease in overall processing efficiency. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a modular segmented retainer precision machining tooling, which solves the problem that when the existing bearing retainer contacts the rollers during the fine machining of the pockets, it is necessary to change the pressing position of the pressure plate during the machining process for re-pressing and then re-processing the avoided part by the boring tool, resulting in reduced overall machining efficiency.

[0006] To achieve the above object, the present invention is implemented by the following technical scheme: a modular segmented cage precision machining tool, comprising a base, a cage blank is placed on the base, a positioning piece for clamping the cage blank is arranged on the base, the cage blank has a cage-shaped area and a pocket roller contact surface, a moving module is arranged on the base, and a movable clamping module for fixing the cage blank is arranged at the moving end of the moving module, and the movable clamping module comprises:

[0007] An upper clamping platform and a lower clamping platform are arranged opposite to each other, and rotatable rollers are arranged on the inner sides of the upper clamping platform and the lower clamping platform;

[0008] An upper support rod and a lower support rod, wherein the upper support rod is connected to the upper clamping platform, and the lower support rod is connected to the lower clamping platform;

[0009] A height adjustment component is arranged on the upper support rod and the lower support rod to adjust the relative distance between the upper clamping platform and the lower clamping platform;

[0010] A main support rod, the bottom end of which is fixed to the moving end of the moving module, and the top end of which is fixed to the outer wall surface of the bottom of the lower support rod;

[0011] A clamping degree adjustment mechanism, arranged on the lower support rod, for adjusting the height of the horizontal plane of the lower clamping table;

[0012] Wherein, when processing a certain pocket roller contact surface, the movable clamping module can be moved to the adjacent pocket roller contact surface through the moving module in a state of clamping the retaining frame blank.

[0013] Preferably, the height adjustment component comprises:

[0014] A first motor is fixed on the top of the upper support rod;

[0015] A first main shaft passes through the upper support rod, and the top end is connected with the output end of the first motor; a ball screw is fixed at the bottom of the first main shaft;

[0016] A cavity is formed at the top of the lower support rod; the upper support rod is inserted into the cavity at the top of the lower support rod;

[0017] A connecting platform is fixed in the cavity, and a screw nut of the ball screw is fixed to the connecting platform.

[0018] Preferably, the top view of the cavity is polygonal, and the cross-section of the upper support rod is adapted to the cavity.

[0019] Preferably, the clamping degree adjustment mechanism comprises a cavity formed at the bottom of the lower support rod, an end cap is fixed to the bottom of the cavity; and a table frame, one end of which is fixed to the lower clamping table and the other end is inserted into the cavity; a groove is formed on the end surface of the table frame inserted into the cavity, and balls are rotatably arranged at the upper and lower ends of the groove;

[0020] Sliding rods are fixed at the upper and lower ends of the table frame;

[0021] A slot is fixed at the upper and lower ends of the cavity, and the slide bar is inserted into the slot; when the platform frame moves up and down, the slide bar is driven to slide up and down in the slot;

[0022] The second motor is fixed on the end cover; the output end of the second motor is connected with the second main shaft, and the second main shaft is fixed with a bevel wheel, and the outer edge of the bevel wheel abuts against the ball.

[0023] Preferably, the mobile module comprises:

[0024] Grooves are formed at the front and rear ends of the upper surface of the base;

[0025] A guide rail is fixed on the inner wall of the slot, and a rack is slidably connected to the guide rail; the main support rod is fixed on the rack;

[0026] The third motor is fixed on the base, and a driving gear is fixed to the output end of the third motor, and the driving gear is meshed with the rack.

[0027] Preferably, the positioning member comprises a left positioning member and a right positioning member clamped at the left and right ends of the retainer blank;

[0028] The left positioning member includes a fixed positioning member fixedly connected to the base;

[0029] The right positioning member comprises:

[0030] A positioning platform, fixedly connected to the base;

[0031] The movable positioning member is arranged on the front side of the positioning platform. A tightening bolt is threadedly connected to the movable positioning member, and the end of the tightening bolt is pressed against the movable positioning member.

[0032] Preferably, an inner bottom plate is provided at the bottom of the base, and an adjusting bolt is threadedly connected to the inner bottom plate, and the top of the adjusting bolt is rotatably connected to the base; guide rods are fixed on both sides of the base, and the guide rods pass through the inner bottom plate so that the inner bottom plate slides up and down on the wall of the guide rods; a support rod is fixed on the inner bottom plate, and the support rod passes through the base and then abuts against the bottom of the retaining frame blank.

[0033] Preferably, grooves are formed at the bottom of both sides of the base, a pedestal is fixed in the groove, an inner positioning device is provided on the pedestal, and the inner positioning device penetrates the groove and contacts the retaining frame-shaped area;

[0034] The inner positioning device comprises a first supporting plate and a second supporting plate, wherein the tops of the first supporting plate and the second supporting plate are hinged, and the bottoms are fixed to the pedestal by bolts; and a plurality of bolt holes are pre-opened on the pedestal.

[0035] Preferably, the outer wall surfaces of the first support piece and the second support piece are arc-shaped outer wall surfaces, and the tops of the first support piece and the second support piece are protrudingly provided with raised support points, and the arc-shaped outer wall surfaces and the raised support points are in contact with the retaining frame-shaped area.

[0036] Preferably, a boss is formed on the base, and a slide groove is formed at the bottom of the first supporting piece and the second supporting piece, and the slide groove is matched with the boss.

[0037] Beneficial effects of the present invention: By using a modular segmented retainer precision machining tool provided by the present invention, compared with the prior art, each movable clamping module can be clamped on the two adjacent pocket roller contact surfaces when clamped on the retainer blank frame part, thereby avoiding the pocket roller contact surfaces processed by the boring cutter, so that the processed pocket roller contact surfaces can be processed at one time. In addition, when processing adjacent pocket roller contact surfaces, the clamping adjustment mechanism works to fine-tune the clamping force of the lower clamping table to facilitate the movement of the movable clamping module. The clamping force is restored when moving to the adjacent pocket roller contact surface, thereby improving the clamping and fixing effect on the pocket roller contact surface processed by the retainer blank. A movable dynamic clamping is formed, and the clamping force can be adjusted during and after the movement, thereby improving the overall processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a diagram showing the use state of the retainer blank of the present invention being fixed on the base;

[0039] Figure 2 A top view of the mobile module of the present invention;

[0040] Figure 3 It is a schematic diagram of the three-dimensional structure of the movable clamping module of the present invention;

[0041] Figure 4 This is a front view of the movable clamping module of the present invention;

[0042] Figure 5 It is a schematic diagram of the structure of the clamping degree adjustment mechanism of the present invention;

[0043] Figure 6 This is a front view of the base of the present invention;

[0044] Figure 7 It is a top view of the internal positioning device of the present invention;

[0045] Figure 8 This is a front view of the internal positioning device of the present invention;

[0046] Fig. 9 This is a schematic diagram of the structure of the bevel wheel of the present invention;

[0047] Fig.10 For the present invention Figure 5 A magnified view of the structure in the middle.

[0048] Description of reference numerals in the figures

[0049] 1. Base, 2. Cage blank, 21. Cage V-shaped area, 22. Pocket roller contact surface, 3. Internal positioning device, 31. First support plate, 32. Second support plate, 33. Arc-shaped outer wall surface, 34. Raised support point, 4. Fixed positioning piece, 5. Movable clamping module, 51. Upper clamping table, 52. Roller, 53. Lower clamping table, 54. First motor, 55. Upper support rod, 56. Lower support rod, 57. Main support rod, 58. First spindle, 59. Connecting rod Connecting platform, 510, ball screw, 511, platform frame, 512, second spindle, 513, bevel wheel, 514, second motor, 515, ball, 516, slide bar, 517, slot, 6, slot, 7, support rod, 8, rack, 9, guide rail, 10, driving gear, 11, third motor, 12, inner bottom plate, 13, adjusting bolt, 14, movable positioning part, 15, positioning platform, 16, tightening bolt, 17, guide rod, 18, groove, 19, platform. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. As long as the effects of the present invention can be exerted, various changes can be made to the implementation scheme.

[0051] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.

[0052] Reference Figure 1-Figure 9 A modular segmented retainer precision machining tooling according to the present embodiment is described.

[0053] The tooling comprises a base 1 on which a cage blank 2 is placed. A positioning piece for clamping the cage blank 2 is arranged on the base 1. The cage blank 2 has a cage V-shaped area 21 and a pocket roller contact surface 22.

[0054] In this embodiment, if Figure 1 As shown, a moving module is provided on the base 1, and a movable clamping module 5 for fixing the cage blank 2 is provided at the moving end of the moving module. The movable clamping module 5 is clamped on the frame of the cage blank 2, and the moving module drives the movable clamping module 5 to move between two adjacent pocket roller contact surfaces 22 in a clamped state to avoid the pocket roller contact surfaces 22 processed by the boring tool, so that the processed pocket roller contact surfaces 22 can be processed at one time.

[0055] like Figure 3 , Figure 4 and Figure 5As shown, the movable clamping module 5 includes an upper clamping platform 51, a lower clamping platform 53, an upper support rod 55, a lower support rod 56, a height adjustment component, a main support rod 57, and a clamping degree adjustment mechanism. The upper support rod 55 is inserted into the cavity at the top of the lower support rod 56;

[0056] Specifically, the upper clamping platform 51 and the lower clamping platform 53 are arranged opposite to each other up and down; the inner sides of the upper clamping platform 51 and the lower clamping platform 53 are provided with rotatable rollers 52, which are rigid and maintain the clamping force during the movement. The upper support rod 55 is connected to the upper clamping platform 51, and the lower support rod 56 is connected to the lower clamping platform 53. The height adjustment component is arranged on the upper support rod 55 and the lower support rod 56 to adjust the relative distance between the upper clamping platform 51 and the lower clamping platform 53, so as to facilitate the disassembly and assembly process of the retaining frame blank 2 at the maximum opening and closing degree; the height adjustment component adjusts the upper clamping platform 51 to descend, so that the two rollers 52 are clamped on the frame of the retaining frame blank 2 to achieve fixation.

[0057] The bottom end of the main support rod 57 is fixed to the moving end of the moving module, and the top end of the main support rod 57 is fixed to the outer wall surface of the bottom of the lower support rod 56. The clamping degree adjustment mechanism is arranged on the lower support rod 56, and is used to adjust the horizontal height of the lower clamping table 53. Among them, when processing a certain pocket roller contact surface 22, the movable clamping module 5 can be moved to the adjacent pocket roller contact surface 22 through the moving module in the state of clamping the retaining frame blank 2. When moving, the clamping force of the two rollers 52 can be fine-tuned by the clamping degree adjustment mechanism to facilitate movement. At the same time, when the boring tool processes the pocket roller contact surface 22, the lower clamping table 53 in the adjacent movable clamping module 5 is adjusted by the clamping degree adjustment mechanism and moved upward, thereby increasing the clamping force, strengthening the clamping stability of the retaining frame blank 2, and ensuring high precision of the processed retaining frame blank 2.

[0058] like Figure 4 As shown, the height adjustment assembly includes a first motor 54, a first spindle 58, a cavity and a connecting platform 59. The first motor 54 is fixed to the top of the upper support rod 55; the first spindle 58 penetrates the upper support rod 55, and the top end is matched and connected with the output end of the first motor 54; a ball screw 510 is fixed to the bottom of the first spindle 58; the cavity is formed at the top of the lower support rod 56; the connecting platform 59 is fixed in the cavity, and the screw nut of the ball screw 510 is fixed to the connecting platform 59. The first motor 54 drives the first spindle 58 and the ball screw 510 to rotate, and the nut on the ball screw 510 is set on the connecting platform 59. When the ball screw 510 rotates, it drives the lower support rod 56 and the upper support rod 55 to move relative to each other through the connecting platform 59, completing the relative movement of the upper clamping platform 51 and the lower clamping platform 53, so that the roller 52 contacts or moves away from the frame of the clamping holder blank 2.

[0059] Further explanation of the height adjustment component is: when the two ends of the roller screw 510 are fixed and the screw nut is fixed on a fixed object, as the screw nut moves on the roller screw 510, it can drive the fixed object to move along the length direction of the roller screw 510; and when the two ends of the roller screw 510 are not fixed and the screw nut is fixed on a fixed object, the roller screw 510 will move up and down in the screw nut when it rotates. Combined with the content of this paragraph, since the first main shaft 58 rotates in the upper support rod 55, the roller screw 510 is fixed on the first main shaft 58. When the first motor 54 drives the first main shaft 58 and the ball screw 510 to rotate, the roller screw 510 moves up and down in the screw nut, thereby driving the upper support rod 55 to move up and down in the cavity at the top of the lower support rod 56.

[0060] In one embodiment, the top view of the cavity is polygonal, and the cross section of the upper support rod 55 is adapted to the cavity.

[0061] like Figure 5 As shown, the clamping degree adjustment mechanism includes a cavity formed at the bottom of the lower support rod 56, an end cap is fixed to the bottom of the cavity, and a strip groove is opened on one side of the cavity close to the lower clamping platform 53; it also includes a platform frame 511, a slide bar 516, a slot 517 and a second motor 514. One end of the platform frame 511 is fixed to the lower clamping platform 53, and the other end passes through the strip groove and is inserted into the cavity; the opening height dimension of the strip groove is greater than the height dimension of the platform frame 511. The end surface of the table frame 511 inserted into the cavity is provided with a groove, and the upper and lower ends of the groove are rotatably provided with ball bearings 515; the slide bar 516 is fixed at the upper and lower ends of the table frame 511; the slot 517 is fixed at the upper and lower ends of the cavity, and the slide bar 516 is inserted into the slot 517; when the table frame 511 moves up and down, the slide bar 516 is driven to slide up and down in the slot 517; the second motor 514 is fixed on the end cover; the output end of the second motor 514 is matched and connected with the second main shaft 512, and the second main shaft 512 is fixed with a bevel wheel 513, and the outer edge of the bevel wheel 513 abuts against the ball bearings 515. When the clamping force needs to be adjusted, the second motor 514 drives the second main shaft 512 and the bevel wheel 513 to rotate, and when the bevel wheel 513 rotates, the table frame 511 is moved up and down through its italic design, and when the table frame 511 moves up and down, the slide bars 516 at both ends slide in the slot 517. When the table frame 511 moves up and down, the lower clamping table 53 is driven to make fine adjustments up and down.

[0062] like Figure 1 and Figure 2As shown, the mobile module includes a slot 6, a guide rail 9 and a third motor 11. The slot 6 is formed at the front and rear ends of the upper surface of the base 1; the guide rail 9 is fixed to the inner wall of the slot 6, and a rack 8 is slidably connected to the guide rail 9; the main support rod 57 is fixed to the rack 8; the third motor 11 is fixed to the base 1, and a driving gear 10 is fixed to the output end of the third motor 11, and the driving gear 10 is meshed with the rack 8. Figure 2 As shown, in the initial state, the rack 8 is located at the left side of the guide rail 9, and the main support rod 57 is fixed at the right end of the rack 8. During operation, the third motor 11 drives the driving gear 10 to rotate, drives the rack 8 to move laterally on the guide rail 9, and drives the active clamping module 5 to move laterally, so that the active clamping module 5 moves from the pocket roller contact surface 22 of the pressed retainer blank 2 to the pocket roller contact surface 22 on the right side.

[0063] like Figure 1 and Figure 6 As shown, the positioning member includes a left positioning member and a right positioning member clamped at the left and right ends of the retainer blank 2, which are used to fix and clamp the left and right sides of the retainer blank 2; the positioning member cooperates with the movable clamping module 5 to complete the circumferential fixation of the retainer blank 2. The left positioning member includes a fixed positioning member 4, which is fixedly connected to the base 1, and the left side wall of the retainer blank 2 is attached to the fixed positioning member 4; the right positioning member includes a positioning platform 15 and a movable positioning member 14, and the positioning platform 15 is fixedly connected to the base 1; the movable positioning member 14 is arranged on the front side of the positioning platform 15, and a tightening bolt 16 is threadedly connected to the movable positioning member 14, and the end of the tightening bolt 16 is tightened against the movable positioning member 14. By adjusting the tightening bolt 16, the movable positioning member 14 is driven to move laterally, so that the movable positioning member 14 is attached to the right side wall of the retainer blank 2, and the two ends of the retainer blank 2 are positioned and fixed.

[0064] like Figure 6As shown, a bottom support module is provided at the bottom of the base 1, and the bottom support module includes an inner bottom plate 12, and an adjusting bolt 13 is threadedly connected to the inner bottom plate 12, and the top of the adjusting bolt 13 is rotatably connected to the base 1; guide rods 17 are fixed on both sides of the base 1, and the guide rods 17 penetrate the inner bottom plate 12, so that the inner bottom plate 12 slides up and down on the wall surface of the guide rods 17; a support rod 7 is fixed on the inner bottom plate 12, and the support rod 7 penetrates the base 1 and contacts the bottom of the retainer blank 2. During operation, the adjusting bolt 13 is rotated to drive the inner bottom plate 12 to move up and down. When the inner bottom plate 12 moves up and down, the guide rod 17 guides the up and down movement of the inner bottom plate 12, and drives the support rod 7 to move up and down when the inner bottom plate 12 moves up and down; when the support rod 7 moves upward, it contacts the bottom of the retainer blank 2 to support the retainer blank 2. The support rods 7 are arranged on the inner bottom plate 12, and then by adjusting the bolts 13 and the guide rods 17, all the support rods 7 are raised and lowered synchronously with the inner bottom plate 12, which can greatly reduce the adjustment time of each support rod 7, save working time and improve efficiency.

[0065] like Figure 6 , Figure 7 As shown, grooves 18 are formed on the bottom of both sides of the base 1, and a seat 19 is fixed in the groove 18, and a boss is formed on the seat 19. An internal positioning device 3 is provided on the seat 19, and the internal positioning device penetrates the base 1 and contacts the V-shaped area 21 of the retainer to radially position the retainer blank 2. Figure 8 As shown, the inner positioning device 3 includes a first support piece 31 and a second support piece 32. The tops of the first support piece 31 and the second support piece 32 are hinged, and the bottoms are fixed to the base 19 by bolts. A plurality of bolt holes are pre-opened on the base 19. The bottoms of the first support piece 31 and the second support piece 32 are formed with a slide groove, which is matched with the boss. By fixing the bolts in different bolt holes, the opening angles of the first support piece 31 and the second support piece 32 can be adjusted to adapt to the V-shaped area 21 of the cage blank 2 of different models.

[0066] The outer wall surface of the first support piece 31 and the second support piece 32 is an arc-shaped outer wall surface 33, and the arc-shaped outer wall surface 33 abuts against the side wall surface of the retainer V-shaped area 21 to form a first contact support point. The top of the first support piece 31 and the second support piece 32 is protrudingly provided with a convex support point 34, and the convex support point 34 abuts against the upper wall surface of the retainer V-shaped area 21 to form a second contact support point.

[0067] Working principle: In the preparation stage, according to the type of the retainer blank 2, first fix the bolts at the bottom of the first support plate 31 and the second support plate 32 in the corresponding bolt holes, and adjust the opening angles of the first support plate 31 and the second support plate 32 to adapt to the model of the retainer V-shaped area 21 of the retainer blank 2 being processed. Install the base 1 on the machine tool. Place the retainer blank 2 on the base 1 and overlap it on the lower clamping table 53. The left side of the retainer blank 2 abuts against the fixed positioning member 4, and the right side is adjusted by adjusting the tightening bolt 16 to drive the movable positioning member 14 to move laterally, so that the movable positioning member 14 fits on the right side wall of the retainer blank 2, and cooperates with the fixed positioning member 4 to complete the positioning and fixation of the two ends of the retainer blank 2.

[0068] The first motor 54 drives the first spindle 58 and the ball screw 510 to rotate. When the ball screw 510 rotates, it drives the lower support rod 56 and the upper support rod 55 to move relative to each other through the connecting platform 59, thereby completing the relative movement of the upper clamping platform 51 and the lower clamping platform 53, so that the two rollers 52 are pressed against the frame of the clamping retainer blank 2.

[0069] The inner bottom plate 12 is moved upward by rotating the adjusting bolt 13, so that all the support rods 7 rise synchronously with the inner bottom plate 12 and abut against the bottom of the cage blank 2. The first support piece 31 and the second support piece 32 abut against the V-shaped area 21 of the cage.

[0070] During the processing stage, the boring tool penetrates into the pocket roller contact surface 22 to process the inner wall surface of the pocket roller contact surface 22. When processing an adjacent pocket roller contact surface 22, the third motor 11 drives the driving gear 10 to rotate, drives the rack 8 to move laterally on the guide rail 9, and drives the active clamping module 5 to move laterally, so that the active clamping module 5 avoids and moves away from the pocket roller contact surface 22 to be processed. Before the movable clamping module 5 moves laterally, the second motor 514 works to drive the second spindle 512 and the bevel wheel 513 to rotate 180°. When the bevel wheel 513 rotates, the high end surface of its italic body rotates to the low end surface to contact the ball 515, and the toggle table frame 511 moves downward to drive the lower clamping table 53 downward, thereby reducing the clamping force of the two rollers 52. At this time, the two rollers 52 clamp the frame of the retaining frame blank 2 and move laterally. When the movable clamping module 5 moves to the adjacent pocket roller contact surface 22, the second motor 514 works to drive the second spindle 512 and the bevel wheel 513 to continue to rotate 180°. When the bevel wheel 513 rotates, the low end surface of its italic body rotates to the high end surface to contact the ball 515, and the toggle table frame 511 moves upward to drive the lower clamping table 53 upward, thereby adjusting the clamping force of the lower clamping table 53 and improving the clamping and fixing effect of the pocket roller contact surface 22 processed by the retaining frame blank 2.

[0071] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular segmented cage precision machining tool, comprising a base (1), a cage blank (2) being placed on the base (1), a positioning member for clamping the cage blank (2) being arranged on the base (1), the cage blank (2) having a cage V-shaped region (21) and a pocket roller contact surface (22), characterized in that: The base (1) is provided with a moving module, and a moving end of the moving module is provided with a movable clamping module (5) for fixing the retaining frame blank (2), and the movable clamping module (5) comprises: An upper clamping platform (51) and a lower clamping platform (53) are arranged opposite to each other, and rotatable rollers (52) are arranged on the inner sides of the upper clamping platform (51) and the lower clamping platform (53); an upper support rod (55) and a lower support rod (56), wherein the upper support rod (55) is connected to the upper clamping platform (51), and the lower support rod (56) is connected to the lower clamping platform (53); A height adjustment component is arranged on the upper support rod (55) and the lower support rod (56) to adjust the relative distance between the upper clamping platform (51) and the lower clamping platform (53); the height adjustment component comprises: A first motor (54) fixed to the top of the upper support rod (55); A first main shaft (58) passes through the upper support rod (55), and the top end is cooperatively connected with the output end of the first motor (54); a ball screw (510) is fixed to the bottom of the first main shaft (58); A cavity is formed at the top of the lower support rod (56); the upper support rod (55) is inserted into the cavity at the top of the lower support rod (56); A connecting platform (59) is fixed in the cavity, and a screw nut of the ball screw (510) is fixed to the connecting platform (59); A main support rod (57), wherein the bottom end of the main support rod (57) is fixed to the moving end of the moving module, and the top end of the main support rod (57) is fixed to the bottom outer wall surface of the lower support rod (56); A clamping degree adjustment mechanism, arranged on the lower support rod (56), and used for adjusting the height of the horizontal plane of the lower clamping platform (53); When machining a certain pocket roller contact surface (22), the movable clamping module (5) can be moved to an adjacent pocket roller contact surface (22) through a moving module while clamping the retaining frame blank (2).

2. A modular segmented cage precision machining tool according to claim 1, characterized in that: The top view of the cavity is polygonal, and the cross section of the upper support rod (55) is adapted to the cavity.

3. A modular segmented cage precision machining tool according to claim 1, characterized in that: The clamping degree adjustment mechanism comprises a cavity formed at the bottom of the lower support rod (56), an end cap being fixed to the bottom of the cavity; and A table frame (511) has one end fixed to the lower clamping table (53) and the other end inserted into the cavity; a groove is formed on the end surface of the table frame (511) inserted into the cavity, and balls (515) are rotatably provided at the upper and lower ends of the groove; Sliding rods (516) are fixed at the upper and lower ends of the platform frame (511); A slot (517) is fixed at the upper and lower ends of the cavity, and the slide bar (516) is inserted into the slot (517); the platform frame (511) drives the slide bar (516) to slide up and down in the slot (517); A second motor (514) is fixed on the end cover; an output end of the second motor (514) is cooperatively connected to a second main shaft (512); a bevel wheel (513) is fixed on the second main shaft (512); and an outer edge of the bevel wheel (513) abuts against a ball bearing (515).

4. A modular segmented cage precision machining tool according to claim 1, characterized in that: The mobile module comprises: Grooves (6) formed at front and rear ends of the upper surface of the base (1); A guide rail (9) is fixed to the inner wall of the slot (6), and a rack (8) is slidably connected to the guide rail (9); the main support rod (57) is fixed to the rack (8); A third motor (11) is fixed on the base (1); a driving gear (10) is fixed to the output end of the third motor (11); the driving gear (10) is meshed with the rack (8).

5. The modular segmented cage precision machining tool according to claim 1, characterized in that: The positioning piece comprises a left positioning piece and a right positioning piece clamped at the left and right ends of the retainer blank (2); The left positioning member comprises a fixed positioning member (4) fixedly connected to the base (1); The right positioning member comprises: A positioning platform (15) fixedly connected to the base (1); A movable positioning member (14) is arranged on the front side of the positioning platform (15), and a tightening bolt (16) is threadedly connected to the movable positioning member (14), with an end of the tightening bolt (16) being pressed against the movable positioning member (14).

6. A modular segmented cage precision machining tool according to claim 1, characterized in that: An inner bottom plate (12) is provided at the bottom of the base (1), an adjusting bolt (13) is threadedly connected to the inner bottom plate (12), and the top end of the adjusting bolt (13) is rotatably connected to the base (1); guide rods (17) are fixed on both sides of the base (1), and the guide rods (17) penetrate the inner bottom plate (12), so that the inner bottom plate (12) slides up and down on the wall surface of the guide rods (17); a support rod (7) is fixed on the inner bottom plate (12), and the support rod (7) penetrates the base (1) and contacts the bottom of the retaining frame blank (2).

7. A modular segmented cage precision machining tool according to claim 1, characterized in that: The bottom of both sides of the base (1) are provided with grooves (18), a pedestal (19) is fixed in the groove (18), an inner positioning device (3) is provided on the pedestal (19), and the inner positioning device penetrates the groove (18) and contacts the V-shaped area (21) of the retaining frame; The inner positioning device (3) comprises a first supporting plate (31) and a second supporting plate (32); the first supporting plate (31) and the second supporting plate (32) are hinged at the top and fixed to the pedestal (19) at the bottom by bolts; and a plurality of bolt holes are pre-opened on the pedestal (19).

8. A modular segmented cage precision machining tool according to claim 7, characterized in that: The outer wall surfaces of the first support piece (31) and the second support piece (32) are arc-shaped outer wall surfaces (33); the tops of the first support piece (31) and the second support piece (32) are protrudingly provided with raised support points (34); the arc-shaped outer wall surfaces (33) and the raised support points (34) are in contact with the V-shaped region (21) of the retaining frame.

9. A modular segmented cage precision machining tool according to claim 7, characterized in that: A boss is formed on the pedestal (19), and a slide groove is formed at the bottom of the first support sheet (31) and the second support sheet (32), and the slide groove is adapted to the boss.

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