90-pitch rail chain link machining tool clamp

Abstract

The utility model provides a 90-pitch rail chain link machining tool clamp which comprises a bottom plate, a side baffle, a sleeve hole positioning block, a pin hole positioning block and a clamping mechanism, and the side baffle is vertically arranged at the center line position of the top of the bottom plate; at least one group of sleeve hole positioning blocks and pin hole positioning blocks are arranged at intervals left and right, and are fixedly connected with the side baffles in a cross shape respectively; at least one group of clamping mechanisms are provided, and each group comprises two clamping mechanisms which are correspondingly mounted on the bottom plate on the front side and the rear side of the side baffle respectively and used for clamping the rail chain links placed on the sleeve hole positioning blocks and the pin hole positioning blocks. The 90-pitch rail link machining tool clamp is more reasonable in positioning reference, higher in positioning accuracy, more convenient and simpler in clamping and higher in machining efficiency.

Description

Technical Field

[0001] The utility model relates to a rail chain link processing auxiliary device, in particular to a 90-pitch rail chain link processing tooling fixture. Background Art

[0002] Track links generally refer to the connecting parts of crawlers used in construction machinery such as excavators and bulldozers and military machinery such as tanks. At present, in response to the development needs of miniaturization of excavators and to meet market demand, the company has developed small-pitch 90A pitch track links. The existing 90A pitch track links can only be processed one at a time, which not only has low processing efficiency, but also has large fluctuations in processing quality. In order to meet customer requirements and ensure product quality, it is urgent to design and develop a four-station special fixture that can process two pairs of links at a time, which not only improves production efficiency but also meets its processing accuracy. Utility Model Content

[0003] The technical problem to be solved by the utility model is: aiming at the defect of low processing efficiency of existing 90-pitch rail chain links, a 90-pitch rail chain link processing tooling fixture which can significantly improve production efficiency is provided.

[0004] The utility model adopts the following technical solutions to solve the above technical problems:

[0005] A 90-pitch rail chain link processing fixture comprises a bottom plate, a side baffle, a sleeve hole positioning block, a pin hole positioning block and a clamping mechanism, wherein:

[0006] The side baffle is vertically arranged at the midline position of the top of the bottom plate; the sleeve hole positioning block and the pin hole positioning block are at least one group, arranged at intervals on the left and right, and are respectively fixedly connected to the side baffle in a cross shape;

[0007] The clamping mechanism is at least one group, with two in each group, which are respectively installed on the bottom plate at the front and rear sides of the side baffle and are used to clamp the rail chain links placed on the sleeve hole positioning block and the pin hole positioning block.

[0008] Preferably, the two ends of the side baffle are fixedly connected to the bottom plate by a plurality of fastening bolts.

[0009] And / or the connection between the side baffle and the bottom plate is welded.

[0010] Preferably, the side baffle is provided with at least one set of first positioning grooves and second positioning grooves spaced apart from each other on the left and right sides, wherein:

[0011] The sleeve hole positioning block is fixedly penetrated in the first positioning groove, and the pin hole positioning block is fixedly penetrated in the second positioning groove.

[0012] Preferably, the side baffle is clamped and fixed to the sleeve hole positioning block and the pin hole positioning block by a first clamping bolt and a second clamping bolt which are arranged at intervals on the top left and right of the side baffle;

[0013] And / or the connection between the side baffle plate and the sleeve hole positioning block and the pin hole positioning block is welded.

[0014] Preferably, the front and rear ends of each group of the sleeve hole positioning blocks and the pin hole positioning blocks are arranged front-to-back symmetrically relative to the side baffle.

[0015] Preferably, there is a height difference L between the mounting surface at the top end of the sleeve hole positioning block and the mounting surface at the top end of the pin hole positioning block for maintaining the horizontal placement of the rail chain link.

[0016] Preferably, both ends of the pin hole positioning block are respectively provided with L-shaped limiting plates, wherein:

[0017] The mounting surface of the bottom end of the limiting plate is abutted and connected with the bottom of the pin hole end of the rail chain link, and the inner side wall thereof is abutted and connected with the end of the pin hole end of the rail chain link.

[0018] Preferably, the clamping mechanism comprises a clamping plate, a C-shaped clamping block and a clamping bolt, wherein:

[0019] The clamping plate is fixedly connected to the base plate by bolts, and two ends of the upper part thereof are respectively provided with limiting holes, and a threaded mounting hole is provided between the two limiting holes;

[0020] The legs at both ends of the C-shaped clamping block are limitedly installed in the corresponding limit holes;

[0021] The clamping bolt is threadedly installed in the threaded installation hole, and the end portion thereof is abutted and connected with the middle portion of the C-shaped clamping block.

[0022] Preferably, the bottom plate, side baffles, sleeve hole positioning blocks, pin hole positioning blocks and clamping mechanisms are made of stainless steel or aluminum alloy steel plates.

[0023] Preferably, the sleeve hole positioning block, the pin hole positioning block and the clamping mechanism are in two groups, which are symmetrically installed at the left and right ends of the bottom plate and the side baffle.

[0024] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0025] The 90-pitch rail chain link processing tooling fixture provided by the utility model is mainly assembled from a bottom plate, side baffles and a plurality of groups of pin hole positioning blocks, sleeve hole positioning blocks and clamping mechanisms. The rail chain link to be processed is accurately positioned by the pin hole positioning blocks and sleeve hole positioning blocks, and the outer clamping mechanism is used to lock and fix the accurately positioned rail chain link to avoid deviation of the rail chain link during processing. Compared with traditional tooling, the positioning reference is more reasonable and the positioning accuracy is higher; and each group of pin hole positioning blocks, sleeve hole positioning blocks and clamping mechanisms can realize the positioning and clamping of two rail chain links, so the clamping is more convenient and concise, and the processing efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a top view structural schematic diagram of a 90-pitch rail chain link processing fixture of the utility model;

[0027] Figure 2 This is a schematic diagram of the main structure of a 90-pitch rail chain link processing fixture of the utility model;

[0028] Figure 3 This is a schematic diagram of the top view of a 90-pitch rail chain link processing fixture used for clamping and fixing the rail chain link of the utility model;

[0029] Figure 4 The utility model is a schematic diagram of the main structure of a 90-pitch rail chain link processing tooling fixture used for clamping and fixing the rail chain link. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0032] In some of the embodiments, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a 90 pitch rail chain link processing tooling fixture is provided, which mainly includes a base plate 10, a side baffle plate 20, a sleeve hole positioning block 30, a pin hole positioning block 40 and a clamping mechanism 50. The sleeve hole positioning block 30, the pin hole positioning block 40 and the clamping mechanism 50 are at least a group, which are respectively installed on the base plate 10 and the side baffle plate 20 at left and right intervals.

[0033] Specifically, Figure 1 and Figure 2As shown, the bottom plate 10 and the side baffle 20 are both square plates with a certain thickness, which can provide a stable structural foundation for the fixture. The side baffle 20 is arranged vertically and is vertically installed at the midline position of the top of the bottom plate 10 to divide the bottom plate 10 into two symmetrical parts.

[0034] According to the needs, the sleeve hole positioning block 30 and the pin hole positioning block 40 are at least one group, and the sleeve hole positioning block 30 and the pin hole positioning block 40 are arranged in a left-right interval and in parallel. The sleeve hole positioning block 30 is vertically installed at the left end position of the side baffle 20 and is fixedly connected to the side baffle 20 in a cross shape, and the pin hole positioning block 40 is vertically installed at the right end position of the side baffle 20 and is fixedly connected to the side baffle 20 in a cross shape.

[0035] That is to say, the two ends of the sleeve hole positioning block 30 and the pin hole positioning block 40 are respectively located at the front and rear sides of the side baffle 20, and the two cooperate to form a support platform for placing the left and right ends of the rail chain link 90 to be processed.

[0036] In order to achieve locking and fixing of the rail chain links 90 placed on the sleeve hole positioning block 30 and the pin hole positioning block 40, the clamping mechanism 50 is at least one group, with two in each group, which are respectively installed on the bottom plate 10 on the front and rear sides of the side baffle 20, and are used to clamp and fix the rail chain links 90 placed on the sleeve hole positioning block 30 and the pin hole positioning block 40 to prevent the rail chain links 90 from shifting during the processing. Compared with traditional tooling, the positioning reference of the tooling fixture is more reasonable and the positioning accuracy is higher.

[0037] In some of the embodiments, Figure 1 and Figure 2 As shown, there are multiple ways to connect the bottom plate 10 and the side baffle 20, such as fixing the two ends of the side baffle 20 to the bottom plate 10 with a plurality of fastening bolts 60, and / or welding the connection between the side baffle 20 and the bottom plate 10.

[0038] Specifically, in order to achieve a stable connection between the side baffle 20 and the bottom plate 10, the two ends of the side baffle 20 are fixedly connected to the bottom plate 10 by a plurality of fastening bolts 60, or as needed, the connection between the side baffle 20 and the bottom plate 10 is welded at the same time for further welding reinforcement.

[0039] In some of the embodiments, Figure 2 and Figure 4As shown, in order to realize the installation of the sleeve hole positioning block 30 and the pin hole positioning block 40, at least one set of first positioning grooves 21 and second positioning grooves 22 arranged in a left-right interval are opened on the side baffle 20. The sleeve hole positioning block 30 is fixedly penetrated in the first positioning groove 21, and the pin hole positioning block 40 is fixedly penetrated in the second positioning groove 22.

[0040] There are many ways to install the sleeve hole positioning block 30 and the pin hole positioning block 40 on the side baffle 20. Preferably, screw holes connecting the first positioning groove 21 and the second positioning groove 22 are respectively provided at the top of the side baffle 20 corresponding to the first positioning groove 21 and the second positioning groove 22, and the first clamping bolt 70 and the second clamping bolt 80 are respectively installed in the two screw holes. The side baffle 20 is clamped and fixed with the sleeve hole positioning block 30 and the pin hole positioning block 40 by the first clamping bolt 70 and the second clamping bolt 80 arranged at intervals on the top left and right.

[0041] In addition, as an alternative, the sleeve hole positioning block 30 and the pin hole positioning block 40 can be directly welded and installed on the side baffle 20 as needed, that is, welding is used at the connection between the side baffle 20 and the sleeve hole positioning block 30 and the pin hole positioning block 40.

[0042] In order to improve the production efficiency of the fixture, the front and rear ends of each set of the sleeve hole positioning block 30 and the pin hole positioning block 40 are arranged symmetrically with respect to the side baffle 20. Clamping stations are formed at the front and rear ends of the sleeve hole positioning block 30 and the pin hole positioning block 40, respectively, so that the two rail chain links 90 can be accurately positioned and clamped at the same time.

[0043] It is worth noting that in order to achieve accurate positioning of the workpiece rail link 90, the rail link 90 is placed horizontally on the sleeve hole positioning block 30 and the pin hole positioning block 40 as a whole. According to the structural characteristics of the two ends of the rail link 90, it is required that there is a drop height L between the mounting surface at the top of the sleeve hole positioning block 30 and the mounting surface at the top of the pin hole positioning block 40 to maintain the horizontal placement of the rail link 90. ​​For example, if the rail link 90 adopts the newly developed small pitch 90A pitch rail link, then the drop height L of the mounting surface on the left and right end positioning blocks is 15.5mm.

[0044] In addition, in order to achieve accurate positioning of the rail link 90, the two ends of the pin hole positioning block 40 are respectively provided with L-shaped limit plates 41, and the L-shaped limit plates 41 form a stepped groove for placing the pin hole end of the rail link 90. ​​Through the structural design of the limit plate 41, the side baffle 20, the sleeve hole positioning block 30 and the clamping mechanism 50 can achieve accurate positioning of the rail link 90.

[0045] Specifically, Figure 3 and Figure 4As shown, when placing the rail link 90, the pin hole end of the rail link 90 is placed on the mounting surface at the bottom of the step groove of the limiting plate 41, and the mounting surface supports the pin hole end of the rail link 90, thereby realizing the Z-direction limit of the rail link 90. ​​At the same time, the side wall of the pin hole end of the rail link 90 is abutted and connected with the side wall of the step groove on the limiting plate 41, thereby realizing the X-direction limit of the rail link 90. ​​And, it is obvious that the inner side wall of the rail link 90 is tightly pressed against the side baffle 20 under the pressing action of the clamping mechanism 50, which realizes the Y-direction limit of the rail link 90.

[0046] In some of the embodiments, Figure 1 and Figure 2 As shown, the clamping mechanism 50 is used as a locking mechanism of the working fixture for fixing the rail chain link 90 , and is mainly composed of three parts: a clamping plate 51 , a C-shaped clamping block 52 and a clamping bolt 53 .

[0047] Specifically, the clamping plate 51 is fixedly mounted on the base plate 10 by bolts and is located between the ends of the sleeve hole positioning block 30 and the ends of the pin hole positioning block 40. To facilitate the installation of the C-shaped clamping block 52 and the clamping bolt 53, limiting holes 511 are respectively provided at both ends of the upper portion of the clamping plate 51, and a threaded mounting hole 512 is provided on the clamping plate 51 between the two limiting holes 511.

[0048] The legs at both ends of the C-shaped clamping block 52 are limitedly installed in the corresponding limiting holes 511 to form a slider structure, so as to limit and guide the C-shaped clamping block 52. The C-shaped clamping block 52 can only move in the Y direction along the opening direction of the limiting hole 511, so as to avoid the X-direction shaking of the limiting hole 511 during the forward and backward movement.

[0049] In order to achieve the abutment and compression of the C-type clamping block 52 against the rail chain link 90, the clamping bolt 53 is threadedly installed in the threaded installation hole 512, and its end is abutted and connected with the middle part of the C-type clamping block 52. When in use, by tightening the clamping bolt 53, the C-type clamping block 52 can be pushed backward, so that the back of the C-type clamping block 52 abuts against the rail chain link 90.

[0050] In addition, in order to avoid extrusion damage to the track link 90 during the clamping process of the clamping mechanism 50, an elastic buffer pad can be fixedly arranged at the position where the back of the C-shaped clamping block 52 contacts the track link 90 as needed. The elastic buffer pad is made of rubber material and has a certain buffering effect, and its surface can be set to match the surface characteristics of the contact surface of the track link 90 to improve the uniformity of the force on the track link 90.

[0051] In some of the embodiments, as required, the bottom plate 10, the side baffle plate 20, the sleeve hole positioning block 30, the pin hole positioning block 40 and the clamping mechanism 50 can be made of stainless steel or aluminum alloy steel plates.

[0052] As a more preferred embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, two groups of the sleeve hole positioning blocks 30, pin hole positioning blocks 40 and clamping mechanisms 50 are installed on the left and right ends of a group of bottom plates 10 and side baffles 20, and each group is arranged symmetrically with respect to the middle side baffle 20. By adopting the tooling clamping, the positioning, clamping and processing of four rail chain links 90 can be achieved at the same time, and the clamping mechanism 50 is used for clamping, which is more convenient and simple to operate and has higher processing efficiency.

[0053] Combination Figure 3 and Figure 4 The working principle of the 90-pitch rail chain link processing fixture is as follows: when working, first place the rail chain link 90 on the installation surface of the pin hole positioning block 40 and the sleeve hole positioning block 30, and install it as shown in the figure, then use the hexagonal wrench knob to tighten the bolt 53, push the C-type clamping block 52 to clamp the rail chain link 90, and pre-tighten the clamping bolt 53 by half a circle to one circle. Do not pre-tighten too much to cause the tooling to shift. After the processing is completed, loosen the clamping bolt 53 with the hexagonal wrench, and finally take out the rail chain link 90 to complete a working process.

[0054] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0055] Secondly, the drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0056] Finally, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A 90-pitch rail chain link processing fixture, characterized in that: It includes a bottom plate, a side baffle, a sleeve hole positioning block, a pin hole positioning block and a clamping mechanism, wherein: The side baffle is vertically arranged at the midline position of the top of the bottom plate; the sleeve hole positioning block and the pin hole positioning block are at least one group, arranged at intervals on the left and right, and are respectively fixedly connected to the side baffle in a cross shape; The clamping mechanism is at least one group, with two in each group, which are respectively installed on the bottom plate at the front and rear sides of the side baffle and are used to clamp the rail chain links placed on the sleeve hole positioning block and the pin hole positioning block.

2. The 90-pitch rail chain link processing fixture according to claim 1 is characterized in that: The two ends of the side baffle are fixedly connected to the bottom plate by a plurality of fastening bolts. And / or the connection between the side baffle and the bottom plate is welded.

3. The 90-pitch rail chain link processing fixture according to claim 1 is characterized in that: The side baffle is provided with at least one set of first positioning grooves and second positioning grooves arranged in a left-right interval, wherein: The sleeve hole positioning block is fixedly penetrated in the first positioning groove, and the pin hole positioning block is fixedly penetrated in the second positioning groove.

4. The 90-pitch rail chain link processing fixture according to claim 1, characterized in that: The side baffles are clamped and fixed to the sleeve hole positioning block and the pin hole positioning block by first and second clamping bolts arranged at intervals on the top left and right of the side baffles; And / or the connection between the side baffle and the sleeve hole positioning block and the pin hole positioning block is welded.

5. The 90-pitch rail chain link processing fixture according to claim 1, characterized in that: The front and rear ends of each group of the sleeve hole positioning blocks and the pin hole positioning blocks are arranged front-to-back symmetrically relative to the side baffle.

6. The 90-pitch rail chain link processing fixture according to claim 1, characterized in that: There is a height difference L between the mounting surface at the top end of the sleeve hole positioning block and the mounting surface at the top end of the pin hole positioning block for maintaining the horizontal placement of the rail chain link.

7. The 90-pitch rail chain link processing fixture according to claim 6, characterized in that: Both ends of the pin hole positioning block are respectively provided with L-shaped limiting plates, wherein: The mounting surface of the bottom end of the limiting plate is abutted and connected with the bottom of the pin hole end of the rail chain link, and the inner side wall thereof is abutted and connected with the end of the pin hole end of the rail chain link.

8. The 90-pitch rail chain link processing fixture according to claim 1, characterized in that: The clamping mechanism comprises a clamping plate, a C-shaped clamping block and a clamping bolt, wherein: The clamping plate is fixedly connected to the base plate by bolts, and two ends of the upper part thereof are respectively provided with limiting holes, and a threaded mounting hole is provided between the two limiting holes; The legs at both ends of the C-shaped clamping block are limitedly installed in the corresponding limit holes; The clamping bolt is threadedly installed in the threaded installation hole, and the end portion thereof is abutted and connected with the middle portion of the C-shaped clamping block.

9. The 90-pitch rail chain link processing fixture according to claim 1, characterized in that: The bottom plate, the side baffle plate, the sleeve hole positioning block, the pin hole positioning block and the clamping mechanism are made of stainless steel or aluminum alloy steel plates.

10. The 90-pitch rail chain link processing fixture according to claim 1, characterized in that: The sleeve hole positioning block, the pin hole positioning block and the clamping mechanism are in two groups and are symmetrically mounted on the left and right ends of the bottom plate and the side baffle.

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