Clamp for machining shaft parts

Abstract

The utility model relates to a shaft part machining clamp which comprises a bottom plate, the left side and the right side of the upper end of the bottom plate are each provided with a clamping mechanism, each clamping mechanism comprises a connecting shaft, the two axial ends of each connecting shaft are rotationally connected with a driving block and a contact plate respectively, the side end of each connecting shaft is rotationally connected with a sliding block through a mounting ring, and meanwhile each clamping mechanism further comprises a sliding rail. According to the device, the connecting shaft is rotationally connected with the driving block, so that the contact plate has a large height adjusting range, the connecting shaft can be prevented from swinging upwards when not needed due to the existence of the pull rod, and it is guaranteed that the device can stably clamp and fix a to-be-machined workpiece arranged between the two clamping mechanisms.

Description

Technical Field

[0001] The utility model relates to the technical field of fixtures for processing parts, in particular to a fixture for processing shaft parts. Background Art

[0002] Shaft parts have excellent transmission and connection effects. Therefore, in practice, many components have shaft parts inside.

[0003] In practice, shaft parts require a variety of unique processing processes according to their different application scenarios, such as quenching, drilling, grinding, etc. During the processing of shaft parts, in order to ensure processing accuracy and safety, the corresponding clamping mechanism is generally used to fix the shaft parts.

[0004] The existing clamping mechanisms are generally linear clamping mechanisms, that is, by setting a corresponding contact plate, the distance between the contact plate and the shaft parts is changed by moving the position of the contact plate on the horizontal plane, so as to clamp and fix the shaft parts.

[0005] Although the prior art device can stably clamp shaft parts in most processing procedures, when shaft parts are processed in the vertical plane, that is, when the central axis of the shaft parts is vertical, this linear clamping mechanism cannot stably keep the central axis of the shaft parts from deviating. Although the method of extending the height of the contact plate can effectively fix the vertical processing, it cannot adapt to the horizontal plane, that is, when the central axis of the shaft parts is horizontal.

[0006] Therefore, we believe that there is a need for a fixture for machining shaft parts that can effectively adjust the clamping point, has a wider adaptability, and can be used for a variety of machining processes. Summary of the invention

[0007] In view of the deficiencies in the prior art, the utility model proposes a fixture for processing shaft parts, which has the advantage of wider adaptability and solves the shortcomings of the prior art devices that are not universal for horizontal and vertical processing and cannot be well adapted to different processing procedures.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A fixture for machining shaft parts, comprising a base plate, a clamping mechanism is respectively arranged on the left and right sides of the upper end of the base plate, each of the clamping mechanisms comprises a slide rail, a slider is inserted in the slide rail, a connecting shaft is arranged at the upper end of the slide rail, and an internal threaded hole I and a through hole I are penetrated through the lower end of the slide rail, and the two axial ends of each connecting shaft are rotatably connected with a contact plate and a driving block respectively, wherein each driving block is penetrated with an internal threaded hole II and a through hole II, and each side end of the connecting shaft is coaxially fixedly connected with a mounting ring, and a pull rod is arranged at the lower end of the mounting ring, and One axial end of the pull rod is rotatably connected to the mounting ring, and the other axial end of the pull rod is rotatably connected to the slider. Two left and right axial bidirectional screws and two left and right axial limit rods are arranged in parallel on the upper end of the connecting shaft, wherein a bidirectional screw is commonly inserted into the two internal threaded holes Ⅰ and the two internal threaded holes Ⅱ, and the two ends of the bidirectional screw are respectively threadedly connected to the corresponding slide rails and driving blocks, and a limit rod is respectively inserted into the two through holes Ⅰ and the two through holes Ⅱ, the limit rod is fixedly connected to the base plate, and the bidirectional screw is rotatably connected to the base plate.

[0010] Preferably, one axial end of each of the bidirectional screws is coaxially fixedly connected to a driven gear, and the two driven gears are meshingly connected.

[0011] Preferably, a support block is fixedly connected to the upper side of the middle section of the bottom plate, the workpiece to be processed is placed between the support blocks, and the two contact plates are in contact with the side end surfaces of the workpiece to be processed.

[0012] Preferably, each of the contact plates is fixedly connected to a rubber elastic pad on one side close to the workpiece to be processed, and each elastic pad is provided with a transverse anti-slip groove.

[0013] Preferably, the distance between the upper end of each tie rod and the workpiece to be processed is smaller than the distance between the lower end thereof and the workpiece to be processed, and the angle between the central axis of each tie rod and the horizontal plane ranges from 0° to 60°.

[0014] Preferably, each of the mounting rings comprises an upper connecting ring and a lower connecting ring, wherein the lower connecting ring is rotatably connected to the pull rod, and the upper connecting ring and the lower connecting ring are detachably connected by bolts.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model enables the contact plate rotatably connected to the connecting shaft through the driving block so that the height change of the contact plate rotatably connected to the connecting shaft is large. At the same time, the device is rotatably connected to a pull rod at the lower end of the connecting shaft, and the pull rod can be used to restrain the upward movement of the contact plate. This can fully ensure the stability of the contact between the contact plate and the workpiece to be processed, and ensure that the device can stably clamp and fix the workpiece to be processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the clamping mechanism of the utility model;

[0019] Figure 3 For this utility model Figure 1 A local enlarged structural diagram of point A in the middle;

[0020] Figure 4 This is a schematic diagram of the connection between the pull rod and the mounting ring of the utility model;

[0021] Figure 5 This is a schematic diagram of the overall structure of the drive block of the utility model.

[0022] In the figure: 1. Clamping mechanism; 101. Driving block; 102. Connecting shaft; 103. Contact plate; 104. Elastic pad; 105. Pull rod; 106. Internal threaded hole Ⅰ; 107. Through hole Ⅰ; 108. Slide rail; 109. Slider; 110. Internal threaded hole Ⅱ; 111. Bolt; 112. Upper connecting ring; 113. Lower connecting ring; 114. Through hole Ⅱ; 2. Workpiece to be processed; 3. Support block; 4. Limit rod; 5. Bidirectional screw; 6. Bottom plate; 7. Driven gear. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Please refer to Figure 1-5 A fixture for machining shaft parts is consistent with the prior art device. The device includes a base plate 6. In practice, the corresponding workbench can be regarded as the base plate 6. The base plate 6 is the basic fixing point of the device, that is, the position of the base plate 6 represents the reference point of the device.

[0026] At the same time, the device is also provided with a clamping mechanism 1 on the left and right sides of the upper end of the bottom plate 6 respectively, and the workpiece 2 to be processed 2 is clamped and fixed by changing the relative distance between the two clamping mechanisms 1 .

[0027] Therefore, the device has a support block 3 fixedly connected to the upper end of the middle section of the base plate 6, the workpiece 2 to be processed is placed above the support block 3, and the two clamping mechanisms 1 are respectively located on the left and right sides of the workpiece 2 to be processed, which can achieve clamping and fixing of the workpiece 2 to be processed.

[0028] Specifically, the clamping mechanism 1 includes a driving block 101, each driving block 101 is penetrated by an internal threaded hole II110, and a bidirectional screw 5 is inserted into the two internal threaded holes II110. Therefore, by rotating the bidirectional screw 5, the two driving blocks 101 can move toward or away from each other, which can quickly adjust the positions of the two driving blocks 101 to meet expectations.

[0029] At the same time, each driving block 101 is penetrated by a through hole II 114, and a limit rod 4 is inserted into the two through holes II 114. The limit rod 4 is fixedly connected to the base plate 6. Therefore, the limit rod 4 can limit the driving block 101 from rotating relative to the base plate 6, thereby ensuring that the threaded connection between the bidirectional screw 5 and the driving block 101 can function normally.

[0030] Different from the prior art device, the clamping mechanism 1 mentioned in the present device further includes a slide rail 108 .

[0031] In addition, each slide rail 108 is penetrated by an internal threaded hole Ⅰ106 and a through hole Ⅰ107 . A bidirectional screw rod 5 is inserted into the two internal threaded holes Ⅰ106 , and a limit rod 4 is inserted into the two through holes Ⅰ107 .

[0032] Therefore, in practice, if the two bidirectional screws 5 are constrained to rotate synchronously, it can be ensured that the corresponding slide rails 108 and the driving block 101 in a single clamping mechanism 1 maintain the same movement trend.

[0033] Therefore, in order to realize the synchronous rotation of the two bidirectional screws 5, the device coaxially and fixedly connects a driven gear 7 to one axial end of each bidirectional screw 5, and constrains the two driven gears 7 to be meshed and transmission-connected.

[0034] It should be noted that, in practice, there must be a corresponding driving mechanism at the axial end of the single bidirectional screw 5. This driving mechanism may be a transmission rod, a driving motor, a transmission belt, etc. In order to avoid misleading, it is not shown in the drawings of this application specification.

[0035] Specifically, in order to clamp and fix shafts of different shapes, the clamping mechanism 1 mentioned in the present device includes a connecting shaft 102, one axial end of which is rotatably connected to the driving block 101, and the other axial end of the connecting shaft 102 is rotatably connected to a contact plate 103 for contacting the workpiece 2 to be processed.

[0036] At the same time, a mounting ring is fixedly connected to the side wall of the connecting shaft 102, and a pull rod 105 is arranged at the lower end of the mounting ring. Moreover, one axial end of the pull rod 105 is rotatably connected to the mounting ring, and the other axial end of the pull rod 105 is rotatably connected to the slider 109. This can change the angle between the central axis of the connecting shaft 102 and the horizontal plane through the relative movement between the slider 109 and the slide rail 108, thereby adjusting the height of the contact plate 103 to ensure that the height of the contact plate 103 can be adapted to the height of the workpiece 2 to be processed.

[0037] Furthermore, the distance between the upper end of the constraint rod 105 and the workpiece 2 to be processed is smaller than the distance between the lower end and the workpiece 2 to be processed. This ensures that when the driving block 101 applies a horizontal thrust to the connecting shaft 102, the pull rod 105 can convert this horizontal thrust into an inclined downward downward force, thereby preventing the connecting shaft 102 from swinging upward due to the influence of the vertical force component, and preventing the contact plate 103 from being unable to form a stable clamping effect on the workpiece 2.

[0038] At the same time, the angle between the central axis of each pull rod 105 and the horizontal plane ranges from 0° to 60°, thereby ensuring that the contact plate 103 has a sufficient range of motion and that the contact plate 103 applies downward pressure on the workpiece 2 to be processed, thereby avoiding the inability of the contact plate 103 to stably clamp the workpiece 2 due to incorrect force.

[0039] Furthermore, in order to avoid damaging the outer wall of the workpiece 2 to be processed and to ensure that there is sufficient contact area between the device and the workpiece 2 to be processed, the device is fixedly connected to the near end of the two contact plates 103 with elastic pads 104 made of rubber material, and each elastic pad 104 is provided with a transverse anti-slip groove.

[0040] Furthermore, in order to facilitate the assembly process between the pull rod 105 and the connecting shaft 102 of the device, the constraint mounting ring of the device includes an upper connecting ring 112 and a lower connecting ring 113, wherein the lower connecting ring 113 is rotatably connected to the pull rod 105, and the upper connecting ring 112 and the lower connecting ring 113 are detachably connected by bolts 111.

[0041] In actual use, the utility model:

[0042] First, the two clamping mechanisms 1 are synchronously moved in opposite directions by using the corresponding driving mechanism and the transmission effect of the driven gear 7;

[0043] Then, the workpiece 2 to be processed is placed on the support block 3. At this time, the corresponding driving mechanism is turned on in the reverse direction, and the two clamping plates move toward each other. At this time, the angle between the two pull rods 105 and the horizontal plane should be adjusted to be large enough;

[0044] Afterwards, the two clamping mechanisms 1 are continuously moved toward each other until the elastic pad 104 can abut against the workpiece 2 to be processed. At this time, the contact plate 103 is pressed downward to ensure that the angle between the pull rod 105 and the horizontal plane is as small as possible;

[0045] Finally, the two clamping mechanisms 1 continue to move toward each other to ensure that the elastic pad 104 can stably clamp and fix the workpiece 2 .

[0046] 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 fixture for machining shaft parts, characterized in that: It comprises a bottom plate (6), and a clamping mechanism (1) is respectively arranged on the left and right sides of the upper end of the bottom plate (6); Each of the clamping mechanisms (1) comprises a slide rail (108), a slider (109) is inserted into the slide rail (108), a connecting shaft (102) is arranged at the upper end of the slide rail (108), and an internal threaded hole I (106) and a through hole I (107) are penetrated through the lower end of the slide rail (108); The two axial ends of each connecting shaft (102) are rotatably connected to a contact plate (103) and a driving block (101), respectively, wherein each driving block (101) is penetrated by an internal threaded hole II (110) and a through hole II (114); The side end of each connecting shaft (102) is coaxially fixedly connected with a mounting ring, the lower end of the mounting ring is provided with a pull rod (105), and one axial end of the pull rod (105) is rotatably connected to the mounting ring, and the other axial end of the pull rod (105) is rotatably connected to the slider (109); The upper end of the connecting shaft (102) is provided with two left and right axial bidirectional screws (5) and two left and right axial limit rods (4), wherein a bidirectional screw (5) is inserted into each of the two internal threaded holes I (106) and the two internal threaded holes II (110), and both ends of the bidirectional screw (5) are respectively threadedly connected to the corresponding slide rails (108) and the drive block (101), and a limit rod (4) is inserted into each of the two through holes I (107) and the two through holes II (114); The limiting rod (4) is fixedly connected to the bottom plate (6), and the bidirectional screw rod (5) is rotationally connected to the bottom plate (6).

2. A fixture for machining shaft parts according to claim 1, characterized in that: One axial end of each bidirectional screw (5) is coaxially fixedly connected to a driven gear (7), and the two driven gears (7) are meshed and transmission-connected.

3. The fixture for machining shaft parts according to claim 1, characterized in that: A support block (3) is fixedly connected to the upper side of the middle section of the bottom plate (6); the workpiece (2) to be processed is placed between the support blocks (3); and the two contact plates (103) are in contact with the side end faces of the workpiece (2) to be processed.

4. A fixture for machining shaft parts according to claim 3, characterized in that: Each of the contact plates (103) is fixedly connected to an elastic pad (104) made of rubber material on one side close to the workpiece (2) to be processed, and each elastic pad (104) is provided with a transverse anti-slip groove.

5. The fixture for machining shaft parts according to claim 3, characterized in that: The distance between the upper end of each pull rod (105) and the workpiece (2) to be processed is smaller than the distance between the lower end and the workpiece (2) to be processed, and the angle between the central axis of each pull rod (105) and the horizontal plane ranges from 0° to 60°.

6. The fixture for machining shaft parts according to claim 1, characterized in that: Each of the mounting rings comprises an upper connecting ring (112) and a lower connecting ring (113), wherein the lower connecting ring (113) is rotatably connected to the pull rod (105), and the upper connecting ring (112) and the lower connecting ring (113) are detachably connected via bolts (111).

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