Precise milling device for key groove of shaft workpiece

Abstract

The utility model discloses a precise milling device for a key groove of a shaft workpiece, which comprises a working table, a movable seat arranged at the top of the working table in a sliding manner, a self-adaptive clamping mechanism and a bearing mechanism, the self-adaptive clamping mechanism is arranged at the top of the moving seat in a sliding manner and comprises a sliding table, a pushing block and a first connecting rod; the sliding table is slidably arranged at the top of the moving seat, and a sliding groove is formed in the top of the sliding table; the pair of pushing blocks are arranged at the top of the sliding table in a sliding mode, and stroke grooves allowing the pushing blocks to move are formed in the top of the movable base. The first connecting rods are rotationally arranged at the top of the sliding table, and one end of each first connecting rod is rotationally connected with the sliding table. By means of the self-adaptive clamping mechanism, the to-be-machined rotor shafts are clamped and fixed, and the to-be-machined rotor shafts with different diameters can be clamped.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shaft workpiece machining equipment, in particular to a shaft workpiece keyway precision milling device. BACKGROUND

[0002] In the field of mechanical manufacturing, the precision milling of shaft workpiece keyways is a crucial machining process. As a key structure for installing keys to transmit torque and torque in shaft workpieces, the machining precision directly affects the overall performance and operational stability of mechanical equipment. However, in the existing shaft workpiece keyway precision milling devices, there are some problems that need to be solved.

[0003] First, it is not convenient to self-adaptively clamp the rotor shaft to be machined, which is a significant technical bottleneck. Traditional clamping methods often use fixed-size clamps, which are difficult to adapt to rotor shafts of different diameters and shapes. This not only limits the machining range, but also easily causes uneven stress on the rotor shaft during clamping, thereby affecting machining precision and workpiece quality. In addition, the replacement and adjustment of fixed clamps also increase processing time and cost.

[0004] In the prior art, for example, a rotor shaft keyway milling device disclosed in Chinese patent (authorized publication number CN221516219U) has a structure including a workbench, a first sliding groove and a second sliding groove are opened along the length direction of the workbench, the second sliding groove is located on both sides of the first sliding groove, three groups of rotor support assemblies are slidably arranged on the first sliding groove, a pressing assembly for pressing the rotor support assemblies is slidably arranged on the second sliding groove, at least one group of jack assemblies for supporting the rotor shaft is arranged on the workbench, and the at least one group of jack assemblies is located between the two groups of rotor support assemblies. During work, the distance between the three groups of rotor support assemblies can be adjusted according to different models of rotors, one group of rotor support assemblies can cooperate with the other two groups of rotor support assemblies to fix the end of the rotor away from the keyway to be milled, can satisfy the machining of super-long rotor structure, can make the rotor get more effective support, can reduce production cost, and can improve production quality.

[0005] However, the position and angle of the clamping block often need to be adjusted by manually rotating the adjusting mechanism in actual use. This process not only consumes time and effort, but also requires operators to have high skill levels and experience to ensure the accuracy and stability of the adjustment. Since manual intervention is required for detailed adjustment, the entire clamping process becomes relatively cumbersome, thereby indirectly reducing the clamping efficiency of the rotor shaft to be machined. This not only affects the continuity of machining and production, but also to some extent restricts the improvement of machining precision and production efficiency. UTILITY MODEL CONTENTS

[0006] Aiming at the above problems, a shaft workpiece keyway precision milling device is provided, which solves the problem of manual adjustment of the clamping of the rotor shaft to be processed through the self-adaptive clamping mechanism.

[0007] To solve the problems in the prior art, the utility model provides a kind of shaft workpiece keyway precision milling device, including workbench and the mobile seat of slidingly being arranged at the top of workbench, workpiece keyway precision milling device further include self-adaptive clamping mechanism and support mechanism;Self-adaptive clamping mechanism slidingly is arranged at the top of mobile seat, and self-adaptive clamping mechanism includes sliding table, push block and first connecting rod;Sliding table slidingly is arranged at the top of mobile seat, and the top of sliding table is provided with sliding slot;Push block has a pair of and is slidingly arranged at the top of sliding table respectively, and the top of mobile seat is provided with travel groove for push block movement;First connecting rod has a pair of and is rotatably arranged at the top of sliding table, and one end of first connecting rod is rotatably connected with sliding table, and the other end of first connecting rod is rotatably connected with push block;Support mechanism is arranged at the bottom of sliding table, and support mechanism is located above workbench.

[0008] Preferably, self-adaptive clamping mechanism further includes first telescopic cylinder and guide frame;First telescopic cylinder has a pair of and is respectively arranged at the top of mobile seat, and the output end of first telescopic cylinder is connected with sliding table;Guide frame is arranged at the top of mobile seat, and sliding table and guide frame are gap fit.

[0009] Preferably, support mechanism includes mounting plate, sliding rod and support block;Mounting plate has a pair of and is respectively arranged at the two sides of sliding table, and a pair of mounting plates are located at the side of push block;Sliding rod slidingly is arranged at the top of mounting plate, and sliding rod is located at the side of sliding table;Support block is arranged at the top of sliding rod, and the top of support block is provided with abutting groove.

[0010] Preferably, support mechanism further includes first telescopic spring;First telescopic spring is sleeved on the outside of sliding rod, and the two ends of first telescopic spring are fixedly connected with sliding rod and mounting plate respectively.

[0011] Preferably, support mechanism further includes displacement block, limiting rod and contact block;The side of sliding table is provided with a pair of displacement slots, and displacement slot is cuboid shape;Limiting rod has a pair of and is respectively arranged in displacement slot, and displacement block and limiting rod are gap fit;Contact block has a plurality of and is respectively arranged at the side of push block.

[0012] Preferably, support mechanism further includes second telescopic spring;Second telescopic spring has a plurality of and is respectively sleeved on the outside of limiting rod, and one end of second telescopic spring is fixed with displacement block, and the other end of second telescopic spring is fixed with limiting rod.

[0013] Preferably, the supporting mechanism further comprises a setting plate, a rotating rod and a second connecting rod; the setting plate has a pair of and is respectively installed on the top of the sliding rod, and the pair of setting plates are located on the side of the supporting block; the rotating rod has a pair of and is respectively rotatably installed on the side of the setting plate; the second connecting rod is rotatably installed on the side of the setting plate, one end of the second connecting rod is rotatably connected with the displacement block, and the other end of the second connecting rod is rotatably connected with the setting plate.

[0014] Preferably, the contact block is L-shaped structure, and the contact block is steel material.

[0015] The utility model discloses the beneficial effect compared with prior art is:

[0016] 1. The utility model discloses a self -adaptation clamping mechanism is set up, realized the clamping fixed of the rotor shaft of processing, and can different diameter's rotor shaft of processing is clamped.

[0017] 2. The utility model discloses a supporting mechanism is set up, realized when the state of relative close of pushing and shoving block, can be through contact block and second connecting rod push supporting block and present the state of rising, until supporting block and rotor shaft of processing contact, realize the clamping and the support of both sides and the bottom of rotor shaft of processing. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a first perspective view three-dimensional structure diagram of the shaft workpiece keyway precision milling device of the utility model.

[0019] Figure 2 It is a front view structure diagram of the shaft workpiece keyway precision milling device of the utility model.

[0020] Figure 3 It is a front view structure diagram of the pushing and shoving block of the shaft workpiece keyway precision milling device of the utility model relative to the state of far away.

[0021] Figure 4 It is a three-dimensional structure diagram of the sliding table of the shaft workpiece keyway precision milling device of the utility model and the pushing and shoving block relative to the state of far away.

[0022] Figure 5 It is Figure 4 The enlarged structure diagram of B in the middle.

[0023] Figure 6 It is Figure 2 The enlarged structure diagram of A in the middle.

[0024] The following are the labels in the diagram: 1. Workbench; 2. Moving seat; 3. Adaptive clamping mechanism; 31. Sliding table; 32. Pushing block; 33. First connecting rod; 34. First telescopic cylinder; 35. Guide frame; 4. Supporting mechanism; 41. Mounting plate; 42. Sliding rod; 43. Supporting block; 44. First telescopic spring; 45. Displacement block; 46. Limiting rod; 47. Contact block; 48. Second telescopic spring; 49. Setting plate; 491. Rotating rod; 492. Second connecting rod. Detailed Implementation

[0025] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0026] See Figures 1-4 As shown, a precision milling device for keyways of shaft-type workpieces includes a worktable 1 and a movable seat 2 slidably disposed on the top of the worktable 1. The precision milling device for keyways also includes an adaptive clamping mechanism 3 and a supporting mechanism 4. The adaptive clamping mechanism 3 is slidably disposed on the top of the movable seat 2 and includes a sliding table 31, a pushing block 32, and a first connecting rod 33. The sliding table 31 is slidably disposed on the top of the movable seat 2, and a sliding groove is provided on the top of the sliding table 31. The pushing block 32 has a pair and is slidably disposed on the top of the sliding table 31, and a stroke groove for the pushing block 32 to move is provided on the top of the movable seat 2. The first connecting rod 33 has a pair and is rotatably disposed on the top of the sliding table 31. One end of the first connecting rod 33 is rotatably connected to the sliding table 31, and the other end of the first connecting rod 33 is rotatably connected to the pushing block 32. The supporting mechanism 4 is disposed at the bottom of the sliding table 31 and is located above the worktable 1.

[0027] The pusher block 32 is preferably made of rubber, which effectively prevents the rotor shaft to be processed from sliding when clamped by the pusher block 32. In the initial state, a clamping space is formed between the two pusher blocks 32 to hold the rotor shaft to be processed. When a clamping operation is required on the rotor shaft to be processed, the sliding table 31 first moves downwards along the moving seat 2. During this process, the sliding table 31 drives the pusher block 32 through the rotatably connected first connecting rod 33, causing the pusher block 32 to move relatively closer along the moving seat 2. When the pusher block 32 contacts the rotor shaft to be processed, the sliding table 31 stops descending, and the rotor shaft to be processed is then firmly clamped by the two pusher blocks 32. This achieves the clamping and fixing of the rotor shaft to be processed and enables the clamping of rotor shafts of different diameters.

[0028] See Figures 2-4As shown in the figure, the adaptive clamping mechanism 3 further comprises a first telescopic cylinder 34 and a guide frame 35; the first telescopic cylinder 34 has a pair of and is arranged at the top of the moving seat 2 respectively, and the output end of the first telescopic cylinder 34 is connected with the sliding table 31; the guide frame 35 is arranged at the top of the moving seat 2, and the sliding table 31 is in clearance fit with the guide frame 35.

[0029] When it is needed to clamp the rotor shaft to be machined, first, the first telescopic cylinder 34 is started and drives the sliding table 31 to be in a stable descending state along the guide frame 35. When the sliding table 31 descends, the pushing block 32 can be driven to be in a relatively close state by the first connecting rod 33.

[0030] Referring to Figures 2-5 As shown in the figure, the supporting mechanism 4 comprises a mounting plate 41, a sliding rod 42 and a supporting block 43; the mounting plate 41 has a pair of and is arranged at the two sides of the sliding table 31 respectively, and the pair of mounting plates 41 are located at the side of the pushing block 32; the sliding rod 42 is slidingly arranged at the top of the mounting plate 41, and the sliding rod 42 is located at the side of the sliding table 31; the supporting block 43 is arranged at the top of the sliding rod 42, and the top of the supporting block 43 is provided with an abutting groove.

[0031] When the rotor shaft to be machined is clamped by the pushing block 32, in this process, the sliding rod 42 and the supporting block 43 can be raised and contact the rotor shaft to be machined, in this state, the rotor shaft to be machined can be lifted by the supporting block 43.

[0032] Referring to Figures 2-6 As shown in the figure, the supporting mechanism 4 further comprises a first telescopic spring 44; the first telescopic spring 44 is sleeved outside the sliding rod 42, and the two ends of the first telescopic spring 44 are fixedly connected with the sliding rod 42 and the mounting plate 41 respectively.

[0033] When the sliding rod 42 and the supporting block 43 are raised, the first telescopic spring 44 can be in a compressed state. When the pushing block 32 is in a relatively distant state, the first telescopic spring 44 releases and lifts the supporting block 43 and the sliding rod 42, drives the sliding rod 42 and the supporting block 43 to be in a descending state.

[0034] Referring to Figures 3-6 As shown in the figure, the supporting mechanism 4 further comprises a displacement block 45, a limiting rod 46 and a contact block 47; the side of the sliding table 31 is provided with a pair of displacement grooves, and the displacement grooves are in the shape of a cuboid; the limiting rod 46 has a pair of and is arranged inside the displacement groove respectively, and the displacement block 45 is in clearance fit with the limiting rod 46; the contact block 47 has a plurality of and is arranged at the side of the pushing block 32 respectively.

[0035] When the pushing block 32 is relatively close to the movement. In this process, the pushing block 32 can drive the contact block 47 to move synchronously, and the contact block 47 can contact the displacement block 45 when moving, and can drive the displacement block 45 to move along the limiting rod 46 when contacting the displacement block 45.

[0036] As shown in Figures 4-6 The supporting mechanism 4 further comprises a second telescopic spring 48. The second telescopic spring 48 has a plurality of sleeves outside the limiting rod 46, one end of the second telescopic spring 48 is fixed with the displacement block 45, and the other end of the second telescopic spring 48 is fixed with the limiting rod 46.

[0037] When the displacement block 45 is pushed by the contact block 47, the second telescopic spring 48 is in a compressed state in this process. When the pushing block 32 is relatively far away, the second telescopic spring 48 releases and pushes the displacement block 45 to the initial position.

[0038] As shown in Figure 5 And Figure 6 The supporting mechanism 4 further comprises a setting plate 49, a rotating rod 491 and a second connecting rod 492. The setting plate 49 has a pair of setting plates 49 mounted on the top of the sliding rod 42, and the pair of setting plates 49 are located on the side of the supporting block 43. The rotating rod 491 has a pair of rotating rods 491 rotatably mounted on the side of the setting plate 49. The second connecting rod 492 is rotatably mounted on the side of the setting plate 49, one end of the second connecting rod 492 is rotatably connected with the displacement block 45, and the other end of the second connecting rod 492 is rotatably connected with the setting plate 49.

[0039] When the contact block 47 contacts and pushes the displacement block 45 to move, the displacement block 45 can push the setting plate 49 to be inclined through the second connecting rod 492 in a rotating connection. When the setting plate 49 is pushed by the second connecting rod 492, the sliding rod 42 and the supporting block 43 can be lifted, and the first telescopic spring 44 is in a compressed state in this process. When the pushing block 32 is relatively close, the supporting block 43 can be pushed to be lifted by the contact block 47 and the second connecting rod 492 until the supporting block 43 contacts the rotor shaft to be machined, so as to clamp and support the two sides and the bottom of the rotor shaft to be machined. Different diameters of the rotor shaft to be machined can be fixed.

[0040] As shown in Figure 4 The contact block 47 is L-shaped structure, and the contact block 47 is steel material.

[0041] In order to reduce the production cost, the material of the contact block 47 is preferably iron material.

[0042] The material of the pushing block 32 is preferably rubber, so as to effectively prevent the rotor shaft to be machined from slipping when clamped. In the initial state, a clamping space is formed between the two pushing blocks 32. When it is required to clamp the rotor shaft to be machined, the first telescopic cylinder 34 is started, and the sliding table 31 is stably lowered along the guide frame 35. The sliding table 31 drives the pushing block 32 to move relatively close through the first connecting rod 33 connected in rotation. When the pushing block 32 contacts the rotor shaft to be machined, the sliding table 31 stops descending, and at this time the rotor shaft to be machined is clamped firmly. At the same time, the sliding rod 42 and the supporting block 43 are raised and contact the rotor shaft to be machined, and the rotor shaft to be machined is supported. In this process, the first telescopic spring 44 is compressed. When the pushing block 32 moves relatively far away, the first telescopic spring 44 is released, and the supporting block 43 and the sliding rod 42 are lifted to a descending state. When the pushing block 32 moves relatively close, the contact block 47 is synchronously moved. When the contact block 47 contacts the displacement block 45, the displacement block 45 is driven to move along the limiting rod 46. In this process, the second telescopic spring 48 is compressed. When the pushing block 32 moves relatively far away, the second telescopic spring 48 is released, and the displacement block 45 is pushed to the initial position. When the displacement block 45 is pushed by the contact block 47, the setting plate 49 is tilted through the second connecting rod 492 connected in rotation. When the setting plate 49 is tilted, the sliding rod 42 and the supporting block 43 are raised, and at this time the first telescopic spring 44 is compressed. Therefore, when the pushing block 32 moves relatively close, the supporting block 43 can be pushed up by the contact block 47 and the second connecting rod 492, until it contacts the rotor shaft to be machined, so as to clamp and support the two sides and the bottom of the rotor shaft to be machined, thereby being able to fix the rotor shaft to be machined with different diameters.

[0043] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A shaft workpiece keyway precision milling device, comprising a workbench (1) and a moving seat (2) slidingly arranged on the top of the workbench (1), characterized in that, The workpiece keyway precision milling device further comprises an adaptive clamping mechanism (3) and a supporting mechanism (4); The adaptive clamping mechanism (3) is slidably arranged on the top of the moving seat (2), and comprises a sliding table (31), a pushing block (32) and a first connecting rod (33); The sliding table (31) is slidably arranged on the top of the moving seat (2), and a sliding groove is formed in the top of the sliding table (31); The pushing block (32) has a pair of pushing blocks (32) and is slidably arranged on the top of the sliding table (31), and a stroke groove is formed in the top of the moving seat (2) for the movement of the pushing block (32); The first connecting rod (33) has a pair of first connecting rods (33) and is rotatably arranged on the top of the sliding table (31), one end of the first connecting rod (33) is rotatably connected with the sliding table (31), and the other end of the first connecting rod (33) is rotatably connected with the pushing block (32); The supporting mechanism (4) is arranged on the bottom of the sliding table (31), and the supporting mechanism (4) is located above the workbench (1).

2. The device for precision milling of keyways of shaft workpieces according to claim 1, characterized in that, The adaptive clamping mechanism (3) further comprises a first telescopic cylinder (34) and a guide frame (35); the first telescopic cylinder (34) has a pair of first telescopic cylinders (34) and is arranged on the top of the moving seat (2), and the output end of the first telescopic cylinder (34) is connected with the sliding table (31); the guide frame (35) is arranged on the top of the moving seat (2), and the sliding table (31) is in clearance fit with the guide frame (35).

3. The device for precision milling of keyways of shaft workpieces according to claim 1, characterized in that, The supporting mechanism (4) comprises a mounting plate (41), a sliding rod (42) and a supporting block (43); the mounting plate (41) has a pair of mounting plates (41) and is arranged on both sides of the sliding table (31), and the pair of mounting plates (41) are located on the side of the pushing block (32); the sliding rod (42) is slidably arranged on the top of the mounting plate (41), and the sliding rod (42) is located on the side of the sliding table (31); the supporting block (43) is arranged on the top of the sliding rod (42), and an abutting groove is formed in the top of the supporting block (43).

4. The device for precision milling of keyways of shaft workpieces according to claim 3, characterized in that, The supporting mechanism (4) further comprises a first telescopic spring (44); the first telescopic spring (44) is sleeved outside the sliding rod (42), and the two ends of the first telescopic spring (44) are fixedly connected with the sliding rod (42) and the mounting plate (41).

5. The device for precision milling of keyways of shaft workpieces according to claim 3, characterized in that, The supporting mechanism (4) further comprises a displacement block (45), a limiting rod (46) and a contact block (47); a pair of displacement grooves are formed in the side of the sliding table (31), and the displacement grooves are in the shape of a cuboid; the limiting rod (46) has a pair of limiting rods (46) and is arranged in the displacement groove, and the displacement block (45) is in clearance fit with the limiting rod (46); the contact block (47) has a plurality of contact blocks (47) and is arranged on the side of the pushing block (32).

6. The device for precision milling of keyways of shaft workpieces according to claim 5, characterized in that, The supporting mechanism (4) further comprises a second telescopic spring (48); the second telescopic spring (48) has a plurality of second telescopic springs (48) and is sleeved outside the limiting rod (46), one end of the second telescopic spring (48) is fixed with the displacement block (45), and the other end of the second telescopic spring (48) is fixed with the limiting rod (46).

7. The device for precision milling of keyways of shaft workpieces according to claim 3, characterized in that, The supporting mechanism (4) further comprises a setting plate (49), a rotating rod (491) and a second connecting rod (492); the setting plate (49) has a pair of and is respectively installed on the top of the sliding rod (42), and the pair of setting plates (49) are located on the side of the supporting block (43); the rotating rod (491) has a pair of and is respectively rotationally installed on the side of the setting plate (49); the second connecting rod (492) is rotationally installed on the side of the setting plate (49), one end of the second connecting rod (492) is rotationally connected with the displacement block (45), and the other end of the second connecting rod (492) is rotationally connected with the setting plate (49).

8. The device for precision milling of keyways of shaft workpieces according to claim 5, characterized in that, The contact block (47) is in L-shaped structure, and the contact block (47) is made of steel.

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