Positioning tool for crankshaft machining

Abstract

The utility model relates to a positioning tool for crankshaft machining, which belongs to the field of crankshaft machining and comprises two vertical frames and a connecting assembly plate for connecting the two vertical frames, the top ends of the two vertical frames are rotatably connected with clamping seats for clamping the end part of a crankshaft, a supporting assembly rod is arranged above the connecting assembly plate, and the lengths of the connecting assembly plate and the supporting assembly rod are adjustable. The two ends of the supporting assembly rods are fixedly connected with the whole formed by connecting the vertical frames and the clamping bases on the same side through connecting rods correspondingly, the supporting assembly rods are sleeved with a plurality of sliding sleeves capable of sliding, and the outer sides of the sliding sleeves are connected with threaded sleeves and limiting sleeves in one-to-one correspondence with the threaded sleeves in a screwed mode through threads. A supporting roller used for providing side supporting for the crankshaft is arranged on the outer side of the threaded sleeve through a support, and the sliding sleeve and the threaded sleeve are paired in a one-to-one or one-to-many mode. According to the utility model, a multi-point supporting type positioning effect is provided for the crankshaft by utilizing a whole body formed by connecting the supporting rollers capable of sliding and rotating with the sliding sleeve.

Description

Technical Field

[0001] The utility model belongs to the field of crankshaft processing, and in particular relates to a positioning tool for crankshaft processing. Background Art

[0002] The crankshaft is one of the core components of a diesel engine. During the production of the crankshaft, due to the irregular shape of the crankshaft, it cannot be directly placed on the processing table during the processing. In order to ensure the processing accuracy, it is necessary to use a positioning tool to provide positioning support for the crankshaft. The existing positioning tool for crankshaft processing mainly includes two categories. One category is to clamp and fix the crankshaft at both ends. The advantage of this positioning support method is that the outer wall of the crankshaft can be fully exposed, which is convenient for processing various parts of the crankshaft. However, the clamping method at both ends lacks side and bottom support, and there is a risk of insufficient support stability. In addition, the positioning tool needs to be disassembled and assembled again when adjusting the angle of the crankshaft. The other type of positioning tool is to clamp the crankshaft at multiple points horizontally. This positioning method has high stability. However, due to the irregular shape of the crankshaft, in order to facilitate the selection of appropriate clamping points according to the structure and size of the crankshaft, this type of positioning tool is often composed of multiple separate clamping parts. When in use, each clamping part needs to be disassembled and assembled in turn, which is inconvenient to operate. In view of the above problems, the utility model provides a positioning tool for crankshaft processing. Utility Model Content

[0003] The purpose of the utility model is to provide a positioning tool for crankshaft processing in order to solve the above problems.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] The utility model provides a positioning tool for crankshaft processing, comprising two upright frames and a connecting group plate for connecting the two upright frames, the top ends of the two upright frames are rotatably connected with a clamping seat for clamping the end of the crankshaft, a supporting group rod is arranged above the connecting group plate, the lengths of the connecting group plate and the supporting group rod are both adjustable, the two ends of the supporting group rod are respectively connected to the upright frame and the clamping seat on the same side to form a whole fixedly connected by a connecting rod, a plurality of slidable sliding sleeves are arranged on the outer side of the supporting group rod, a screw sleeve and a limiting sleeve corresponding to the screw sleeve are screwed together on the outer side of the sliding sleeve through a thread, and a supporting roller for providing side support for the crankshaft is arranged on the outer side of the screw sleeve through a bracket.

[0006] As a further optimization solution of the utility model, the clamping seat is a horizontally placed bamboo hat-shaped structure and the two clamping seats are distributed symmetrically on the left and right.

[0007] As a further optimization scheme of the utility model, the connecting group plate includes an inner skateboard and an outer skateboard slidably sleeved on the outside of the inner skateboard, the far ends of the inner skateboard and the outer skateboard are respectively fixedly connected to the vertical frame on the same side, the inner skateboard is connected to the outer skateboard by a screw, the inner skateboard is screwed together with the screw by a thread, and the screw is rotationally connected to the outer skateboard.

[0008] As a further optimization scheme of the utility model, the support rod group includes an inner sliding rod and an outer sliding rod with a sliding sleeve arranged on the outside of the inner sliding rod. The inner sliding rod and the outer sliding rod are made of metal or hard plastic, and the outer sides of the inner sliding rod and the outer sliding rod are both covered with felt sleeves.

[0009] As a further optimization solution of the utility model, the sliding sleeve and the screw sleeve are paired in a one-to-one or one-to-many manner, and the screw sleeves correspond to the supporting rollers one-to-one.

[0010] The beneficial effects of the utility model are:

[0011] The positioning tool for crankshaft processing utilizes two clamping seats to provide support for the crankshaft by clamping at both ends. With the support of the clamping seats, the crankshaft is suspended and can rotate in situ. Subsequently, support rollers are utilized to provide multi-point side support for the crankshaft to adjust and fix the angle of the crankshaft. The position of the support rollers can be adjusted laterally, and the height of the support rollers can be rotationally adjusted, thereby comprehensively achieving the effect of adjusting the contact points between each support roller and the crankshaft. Thus, suitable positioning support can be provided for the crankshaft according to its processing requirements, thereby fully exposing the crankshaft portion to be processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the use state of the utility model;

[0013] Figure 2 It is a schematic diagram of the overall appearance of the utility model;

[0014] Figure 3 It is a schematic diagram of the support rod structure.

[0015] In the figure: 1, stand; 2, inner slide; 3, outer slide; 4, screw; 5, inner slide bar; 6, outer slide bar; 7, felt sleeve; 8, slide sleeve; 9, screw sleeve; 10, support roller; 11, connecting rod; 12, clamping seat; 13, limit sleeve. DETAILED DESCRIPTION

[0016] The present application is described in further detail below. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0017] Example 1

[0018] like Figure 1-3 As shown, the positioning tool for crankshaft processing in this embodiment includes two upright frames 1 and a connecting plate for connecting the two upright frames 1. The top ends of the two upright frames 1 are rotatably connected to a clamping seat 12 for clamping the end of the crankshaft. A supporting rod is provided above the connecting plate. The lengths of the connecting plate and the supporting rod are adjustable. The two ends of the supporting rod are respectively connected to the upright frame 1 and the clamping seat 12 on the same side to form a whole that is fixedly connected by a connecting rod 11. A plurality of slidable sleeves 8 are provided on the outer side of the supporting rod. A screw sleeve 9 and a limiting sleeve 13 corresponding to the screw sleeve 9 are screwed on the outer side of the sliding sleeve 8 through a threaded connection. A supporting roller 10 for providing side support for the crankshaft is provided on the outer side of the screw sleeve 9 through a bracket.

[0019] The clamping seat 12 is in a horizontally placed bamboo hat-shaped structure and the two clamping seats 12 are symmetrically distributed on the left and right.

[0020] The connecting group of plates includes an inner skateboard 2 and an outer skateboard 3 slidably sleeved on the outside of the inner skateboard 2. The distal ends of the inner skateboard 2 and the outer skateboard 3 are respectively fixedly connected to the stand 1 on the same side. The inner skateboard 2 and the outer skateboard 3 are connected by a screw rod 4. The inner skateboard 2 and the screw rod 4 are screwed together by threads and the screw rod 4 is rotationally connected to the outer skateboard 3.

[0021] The supporting rod group includes an inner sliding rod 5 and an outer sliding rod 6 which is slidably sleeved on the outer side of the inner sliding rod 5. The inner sliding rod 5 and the outer sliding rod 6 are made of metal or hard plastic material. The outer sides of the inner sliding rod 5 and the outer sliding rod 6 are sleeved with felt sleeves 7.

[0022] The sliding sleeve 8 and the screw sleeve 9 are paired in a one-to-one or one-to-many manner, and the screw sleeve 9 and the supporting roller 10 correspond one-to-one.

[0023] When using this crankshaft machining positioning fixture to provide positioning support for the crankshaft to be machined, the crankshaft needs to be placed between the two clamping seats 12 first, and then the screw rod 4 is rotated to make the two clamping seats 12 gradually approach to clamp the two ends of the crankshaft, and the clamping seat 12 with a bamboo hat shape structure can adapt to crankshaft end faces of various sizes, and can prevent the crankshaft from sliding left and right after being pressed against the end of the crankshaft. The crankshaft is in a suspended state but can rotate in situ under the clamping of the two clamping seats 12, and then the support rollers 10 are used to provide multi-point support for the crankshaft from both sides to fix the angle of the crankshaft. When adjusting the relative position of the support roller 10 and the crankshaft, on the one hand, the position of the support roller 10 can be adjusted laterally by sliding each sliding sleeve 8 and the screw sleeve 9 on the outer side thereof and the support roller 10 so that the support roller 10 can avoid the part to be processed of the crankshaft when supporting the crankshaft. On the other hand, the height of the support roller 10 can be adjusted by rotating the screw sleeve 9 and the support roller 10 so that the angle of the crankshaft can be adjusted by adjusting the height difference of the support rollers 10 on both sides of the crankshaft, so as to fully expose the part to be processed of the crankshaft during the processing.

[0024] When the screw sleeve 9 is rotated to adjust the height of the support roller 10, the whole formed by the screw sleeve 9 and the support roller 10 will undergo a small lateral displacement. In actual operation, the adjustment operations of the sliding sleeve 8 and the rotating screw sleeve 9 can be performed alternately to ensure that the support roller 10 is adjusted in place.

[0025] After the position of the support roller 10 is adjusted to the right position, each limit sleeve 13 should be rotated to fit with the corresponding screw sleeve 9. Since the limit sleeve 13 is only subjected to the axial pressure applied to it by the end face of the screw sleeve 9, and there is an axial limiting relationship between the limit sleeve 13 and the sliding sleeve 8, the screw sleeve 9 can be prevented from rotating downward after the limit sleeve 13 is fitted with the screw sleeve 9 (the left and right distribution relationship between the limit sleeve 13 and the screw sleeve 9 should be determined according to the thread direction, and the translation direction of the screw sleeve 9 during the downward rotation process is the setting direction of the limit sleeve 13), which can avoid the problem of the overall rotation of the support roller 10 and the screw sleeve 9 due to the pressure of the crankshaft.

[0026] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A positioning tool for crankshaft processing, comprising two vertical frames (1) and a connecting plate for connecting the two vertical frames (1), characterized in that: The top ends of the two vertical frames (1) are rotatably connected to a clamping seat (12) for clamping the end of the crankshaft, a support group rod is provided above the connecting plate, the lengths of the connecting plate and the support group rod are adjustable, the two ends of the support group rod are respectively connected to the vertical frame (1) and the clamping seat (12) on the same side to form a whole fixedly connected through a connecting rod (11), a plurality of slidable sleeves (8) are sleeved on the outer side of the support group rod, a screw sleeve (9) and a limit sleeve (13) corresponding to the screw sleeve (9) are screwed on the outer side of the sleeve (8), and a support roller (10) for providing side support for the crankshaft is provided on the outer side of the screw sleeve (9) through a bracket.

2. A positioning tool for crankshaft machining according to claim 1, characterized in that: The clamping seat (12) is in the form of a horizontally placed bamboo hat, and the two clamping seats (12) are symmetrically distributed on the left and right.

3. A positioning tool for crankshaft machining according to claim 1, characterized in that: The connecting plate assembly comprises an inner slide plate (2) and an outer slide plate (3) slidably mounted on the outer side of the inner slide plate (2); the distal ends of the inner slide plate (2) and the outer slide plate (3) are respectively fixedly connected to the stand (1) on the same side; the inner slide plate (2) and the outer slide plate (3) are connected via a screw rod (4); the inner slide plate (2) and the screw rod (4) are screwed together via a thread, and the screw rod (4) is rotationally connected to the outer slide plate (3).

4. A positioning tool for crankshaft machining according to claim 1, characterized in that: The supporting rod group comprises an inner sliding rod (5) and an outer sliding rod (6) which is slidably sleeved on the outer side of the inner sliding rod (5); the inner sliding rod (5) and the outer sliding rod (6) are made of metal or hard plastic material; and the outer sides of the inner sliding rod (5) and the outer sliding rod (6) are sleeved with felt sleeves (7).

5. A positioning tool for crankshaft machining according to claim 1, characterized in that: The sliding sleeve (8) and the screw sleeve (9) are paired in a one-to-one or one-to-many manner, and the screw sleeve (9) and the supporting roller (10) correspond one-to-one.

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