Small arc turning tool

Abstract

The utility model relates to the technical field of mechanical tools, and discloses a small arc turning tool which comprises a supporting body assembly and a fastening assembly. The support body assembly comprises a seat body and a connecting column; the base body comprises an upper base body and a lower base body which are both in a circular ring shape. The upper seat body and the lower seat body are connected through a plurality of connecting columns; the lower surface of the lower seat body is also provided with a plurality of supporting legs; a plurality of flat plate surfaces are circumferentially arranged on the inner circular surfaces of the upper seat body and the lower seat body; a plurality of first fastening holes are formed in the upper surface of the upper seat body in the circumferential direction, and a plurality of second fastening holes are formed in the lower surface of the lower seat body in the circumferential direction; the first fastening hole and the second fastening hole are coaxial; the fastening assembly comprises a screw supporting seat, a bolt and a nut; the screw supporting seat is installed at the first fastening hole and the second fastening hole, and the bolt and the nut are used for being matched with the screw supporting seat. According to the fixture, one-time clamping of batch products can be achieved, and on the premise that the product machining quality is guaranteed, the machining efficiency is improved, and the machining cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical tooling, in particular to a small arc turning tooling. Background Art

[0002] Light rail tension bearings are devices used to support and fix light rail tracks. Their function is to bear and transfer the weight and lateral force of light rail trains to ensure the stable operation of light rail trains. Light rail tension bearings are usually composed of upper bearing blocks, lower bearing blocks, connecting plates and anchors. The quality of light rail tension bearings is crucial to ensure the safe, smooth and comfortable operation of light rail trains. If light rail tension bearings malfunction or fail, it will cause the track to deform, sink or slide, affecting the normal operation of light rail trains and may even cause safety accidents.

[0003] The lower pressure block of the light rail tension bearing is the main component of the bearing that bears horizontal tension and lateral force. Its bottom surface is in direct contact with the track foundation and bears the weight and dynamic load of the light rail train. The bottom surface of the lower pressure block should be flat and smooth, without obvious wear and deformation, to ensure its good contact and stability with the track. At the same time, the bottom surface of the lower pressure block should also have good durability and wear resistance to withstand long-term loads and friction. In particular, as a consumable part that needs to be replaced regularly, it also has high requirements for economy. However, in the current processing of the lower pressure block, when processing the bottom surface of the lower pressure block, a single-piece single turning processing method is often used, which has high processing costs and low processing efficiency, and there is still a lot of room for improvement in the economy of the product. Utility Model Content

[0004] The utility model aims to provide a small arc turning tool, which can realize one-time clamping of batch products, and is helpful to improve processing efficiency and reduce processing costs under the premise of ensuring product processing quality.

[0005] The basic scheme provided by the utility model is: a small arc turning tool, including a support assembly and a fastening assembly; the support assembly includes a seat body and a connecting column; the seat body includes an upper seat body and a lower seat body, both of which are annular; the upper seat body and the lower seat body are connected by a plurality of connecting columns; the lower surface of the lower seat body is also provided with a plurality of supporting feet; the inner circular surfaces of the upper seat body and the lower seat body are circumferentially provided with a plurality of flat surfaces; the upper surface of the upper seat body is circumferentially provided with a plurality of first fastening holes, and the lower surface of the lower seat body is circumferentially provided with a plurality of second fastening holes; the first fastening holes and the second fastening holes are coaxial;

[0006] The fastening assembly includes a screw support seat, a bolt and a nut; the screw support seat is installed at the first fastening hole and the second fastening hole, and the bolt and the nut are used to cooperate with the screw support seat.

[0007] Furthermore, the fastening assembly also includes a pin; the pin is used to cooperate with the connecting holes on the left and right side surfaces of the workpiece to limit the workpiece; the workpiece is a lower pressure block to be processed.

[0008] Furthermore, a pin hole is provided on the left and right sides of the outer cylindrical surface of the nut; the pin hole is used to cooperate with the pin to limit the workpiece.

[0009] Furthermore, the axis of the pin hole is 70-80° to the axis of the nut.

[0010] Furthermore, a bolt connection hole is provided on the screw support seat; a fixing hole is also provided on the bottom surface of the screw support seat; and the axis of the bolt connection hole is perpendicular to the axis of the fixing hole.

[0011] Furthermore, the width of the flat surface is equal to the width of the top surface of the workpiece.

[0012] Furthermore, the distance between the upper surface of the upper seat body and the lower surface of the lower seat body is equal to the length of the top surface of the workpiece.

[0013] Furthermore, the distance between the lower surface of the upper seat body and the upper surface of the lower seat body is greater than the chord length of the circular arc segment of the top surface of the workpiece.

[0014] Furthermore, a first fastening hole is provided in an area corresponding to every two flat surfaces of the upper seat body, and a second fastening hole is provided in an area corresponding to every two flat surfaces of the lower seat body.

[0015] The working principle and advantages of the utility model are as follows: the scheme can be used for batch clamping and processing the bottom surface of the lower pressure block of the light rail tension support. In specific applications, the top surface of the workpiece to be processed is attached to the flat surface on the inner circular surface of the upper seat body and the lower seat body, and the upper and lower seats are adjusted so that the upper and lower seats avoid the arc section of the top surface of the workpiece; pins are inserted into the connection holes on the left and right side surfaces of the workpiece, and the other end of the pin is inserted into the pin hole of the nut, and then the screw support seat is installed at the first fastening hole and the second fastening hole (specifically, through the fixing hole and the first fastening hole and the second fastening hole, a plurality of screw support seats are respectively fixed on the upper seat body and the lower seat body), and a bolt is used to pass through the nut and screwed into the bolt connection hole. The fastening components (including pins) located on the left and right sides of the workpiece can fully limit and clamp the workpiece to achieve the fixation of a single workpiece. Repeat the above steps, and then multiple workpieces can be fixed on the inner circular surface of the seat body to complete the overall clamping of multiple workpieces.

[0016] During processing, first find the center of the small arc turning tool (i.e. the center of the seat body), and then use the vertical lathe to turn the bottom surface of the workpiece to complete the processing of the bottom surface of the workpiece. In addition, during the processing of multiple workpieces, there is no need to repeatedly disassemble and assemble the workpieces, which reduces the positioning and clamping steps, helping to improve processing efficiency and reduce processing costs while ensuring product processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a small arc turning tool embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of a workpiece structure of an embodiment of a small arc turning tool of the utility model;

[0019] Figure 3 It is a front view and a top view of a support assembly of a small arc turning tool embodiment of the utility model;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of a support assembly of a small arc turning tool embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the screw support structure of a small arc turning tool embodiment of the utility model;

[0022] Figure 6 This is a schematic diagram of a nut structure of an embodiment of a small arc turning tool of the utility model;

[0023] Figure 7 It is a schematic diagram of the structure of a fastening component of a small arc turning tooling embodiment of the utility model. DETAILED DESCRIPTION

[0024] The following is a further detailed description through specific implementation methods:

[0025] The marks in the drawings of the specification include: upper base 1, lower base 2, flat surface 3, first fastening hole 4, second fastening hole 5, connecting column 6, screw support seat 7, bolt connection hole 701, fixing hole 702, nut 8, pin hole 801, support foot 9, workpiece 10, top surface 101 of the workpiece, bottom surface 102 of the workpiece, top surface arc segment 103 of the workpiece, connecting hole 104, and pin 11.

[0026] The embodiment is basically as shown in the attached Figure 1 Shown: A small arc turning tool, including a support assembly and a fastening assembly.

[0027] The support assembly includes a seat body and a connecting column 6; the seat body includes an upper seat body 1 and a lower seat body 2 both in a circular shape; the upper seat body 1 and the lower seat body 2 are connected by welding through a plurality of connecting columns 6; the lower surface of the lower seat body 2 is also provided with a plurality of supporting feet 9, as shown in the attached Figure 3 and Figure 4 Specifically, in this embodiment, a mounting hole is provided on the bottom surface of the support leg 9 to facilitate fixing the seat body or cooperating with a machine tool or the like.

[0028] Several flat surfaces 3 are circumferentially arranged on the inner circular surfaces of the upper seat body 1 and the lower seat body 2; several first fastening holes 4 are circumferentially arranged on the upper surface of the upper seat body 1, and several second fastening holes 5 are circumferentially arranged on the lower surface of the lower seat body 2; the first fastening holes 4 and the second fastening holes 5 are coaxial.

[0029] Specifically, the width of the flat surface 3 is equal to the width of the top surface 101 of the workpiece. In this embodiment, the workpiece 10 is a lower pressure block to be processed, as shown in the attached Figure 2 As shown, the surface to be processed is the bottom surface of the lower pressure block. In this way, the flat surface 3 can match the outer structure of the workpiece 10, so that the top surface 101 of the workpiece can be relatively stably fitted with the inner surface of the seat body, preventing the workpiece 10 from rotating left and right, and can effectively limit the workpiece 10 and facilitate the subsequent tightening of the workpiece 10. It can be understood that in actual applications, the workpiece 10 can also be other products with a similar structure to the lower pressure block.

[0030] The distance between the upper surface of the upper seat body 1 and the lower surface of the lower seat body 2 is equal to the length of the top surface 101 of the workpiece. The distance between the lower surface of the upper seat body 1 and the upper surface of the lower seat body 2 is greater than the chord length of the arc segment 103 of the top surface of the workpiece. With this structure, the upper and lower seats 2 can respectively abut the upper and lower parts of the top surface of the workpiece 10, and avoid the arc segment of the top surface of the workpiece 10, so as to avoid affecting the remaining surfaces of the workpiece 10.

[0031] A first fastening hole 4 is provided in the area corresponding to every two flat surfaces 3 of the upper seat body 1, and a second fastening hole 5 is provided in the area corresponding to every two flat surfaces 3 of the lower seat body 2; that is, a first fastening hole 4 is provided in the area corresponding to the flat surfaces 3 on the left and right sides of every three flat surfaces 3 of the upper seat body 1, and a second fastening hole 5 is provided in the area corresponding to the flat surfaces 3 on the left and right sides of every three flat surfaces 3 of the lower seat body 2. With this structure, two groups of upper and lower fastening components can be provided at the positions of the two groups of fastening holes, which can ensure the stable clamping of the workpiece 10. In a specific application, the workpiece 10 is provided on the flat surface 3 in the middle of the three flat surfaces 3, and four groups of upper and lower, left and right fastening components can be provided corresponding to the fastening holes at the flat surfaces 3 on the left and right sides, so that the workpiece 10 can be stably clamped and the clamping of the workpiece 10 can be achieved.

[0032] The fastening assembly includes a screw support seat 7, a long bolt, a short bolt, a nut 8 and a pin 11.

[0033] As attached Figure 5 As shown, the screw support seat 7 is installed at the first fastening hole 4 and the second fastening hole 5, and the bolt and nut 8 are used to cooperate with the screw support seat 7. The pin 11 is used to cooperate with the connecting holes 104 on the left and right side surfaces of the workpiece 10 to limit the workpiece 10 (specifically, it can limit the freedom of up and down movement of the workpiece 10).

[0034] Specifically, as attached Figure 6 As shown, a pin hole 801 is provided on the left and right sides of the outer cylindrical surface of the nut 8; the pin hole 801 is used to cooperate with the pin 11 to limit the workpiece 10. The axis of the pin hole 801 is 70-80° with the axis of the nut 8. In this embodiment, the axis of the pin hole 801 is 75° with the axis of the nut 8. With this arrangement, the pin hole 801 can adapt to the clamping layout of the workpiece 10 arranged in a circular shape, and is convenient for cooperation with the workpiece 10. In practical applications, the nut 8 and the shape of a reasonable size can be designed according to the minimum installation gap between two adjacent workpieces 10 and the distance from the inner cylindrical surface of the seat body.

[0035] The screw support seat 7 is provided with a bolt connection hole 701 ; the bottom surface of the screw support seat 7 is also provided with a fixing hole 702 ; the axis of the bolt connection hole 701 is perpendicular to the axis of the fixing hole 702 .

[0036] In a specific application, the top surface 101 of the workpiece is attached to the flat surface 3 on the inner circular surface of the upper seat body 1 and the lower seat body 2, and the upper and lower seats 2 are adjusted so as to avoid the arc segment of the top surface of the workpiece 10. The pins 11 are inserted into the connection holes 104 on the left and right side surfaces of the workpiece 10, and the other end of the pin 11 is inserted into the pin hole 801 of the nut 8. The screw support seat 7 is installed at the first fastening hole 4 and the second fastening hole 5 (specifically, the screw support seat 7 is fixed to the upper seat body 1 and the lower seat body 2 through the fixing hole 702 and the first fastening hole 4 and the second fastening hole 5, and the short bolts are used), and the long bolts are passed through the nut 8 and screwed into the bolt connection hole 701, as shown in the attached figure. Figure 7 As shown, a single workpiece 10 is fixed. Repeat the above steps, and then multiple workpieces 10 can be fixed on the inner circular surface of the seat body, completing the overall clamping of multiple workpieces 10. During processing, first find the center of the small arc turning tool (i.e., the center of the seat body), and then use the vertical lathe to turn the bottom surface 102 of the workpiece to complete the processing of the bottom surface of the workpiece 10. In addition, during the processing of multiple workpieces 10, there is no need to repeatedly disassemble and assemble the workpieces 10, which reduces the positioning and clamping steps, helps to improve processing efficiency and reduce processing costs.

[0037] A small arc turning tool provided in this embodiment can realize one-time clamping of batch products, which helps to improve processing efficiency and reduce processing costs while ensuring product processing quality.

[0038] The above is only an embodiment of the utility model. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A small arc turning tool, characterized in that: It comprises a support assembly and a fastening assembly; the support assembly comprises a seat body and a connecting column; the seat body comprises an upper seat body and a lower seat body, both of which are annular; the upper seat body and the lower seat body are connected by a plurality of connecting columns; a plurality of legs are also arranged on the lower surface of the lower seat body; a plurality of flat surfaces are circumferentially arranged on the inner circular surfaces of the upper seat body and the lower seat body; a plurality of first fastening holes are circumferentially arranged on the upper surface of the upper seat body, and a plurality of second fastening holes are circumferentially arranged on the lower surface of the lower seat body; the first fastening hole and the second fastening hole are coaxial; The fastening assembly includes a screw support seat, a bolt and a nut; the screw support seat is installed at the first fastening hole and the second fastening hole, and the bolt and the nut are used to cooperate with the screw support seat.

2. A small arc turning tool according to claim 1, characterized in that: The fastening assembly also includes a pin; the pin is used to cooperate with the connecting holes on the left and right side surfaces of the workpiece to limit the workpiece; the workpiece is a lower pressure block to be processed.

3. A small arc turning tool according to claim 2, characterized in that: A pin hole is provided on the left and right sides of the outer cylindrical surface of the nut; the pin hole is used to cooperate with the pin to limit the workpiece.

4. A small arc turning tool according to claim 3, characterized in that: The axis of the pin hole is 70-80 degrees to the axis of the nut.

5. The small arc turning tool according to claim 3, characterized in that: The screw support seat is provided with a bolt connection hole; the bottom surface of the screw support seat is also provided with a fixing hole; the axis of the bolt connection hole is perpendicular to the axis of the fixing hole.

6. A small arc turning tool according to claim 2, characterized in that: The width of the flat surface is equal to the width of the top surface of the workpiece.

7. A small arc turning tool according to claim 2, characterized in that: The distance between the upper surface of the upper seat body and the lower surface of the lower seat body is equal to the length of the top surface of the workpiece.

8. A small arc turning tool according to claim 7, characterized in that: The distance between the lower surface of the upper seat body and the upper surface of the lower seat body is greater than the chord length of the arc segment of the top surface of the workpiece.

9. The small arc turning tool according to claim 1, characterized in that: A first fastening hole is provided in an area corresponding to every two flat surfaces of the upper seat body, and a second fastening hole is provided in an area corresponding to every two flat surfaces of the lower seat body.

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