Bolt groove milling tool

Abstract

The utility model relates to a bolt groove milling tool which comprises a bottom plate, a lower die is fixedly connected to the bottom plate and extends in the left-right direction, a plurality of bolt grooves extending in the front-back direction are formed in the lower die, the bolt grooves are formed in the upper end face of the lower die, and workpieces are supported in the bolt grooves. The inner walls of the bolt grooves are attached to the outer wall of the workpiece, a pressing plate is arranged above the lower die and extends in the left-right direction, the bolt grooves are located between the left end face and the right end face of the pressing plate, the pressing plate is in bolt connection with the lower die through pressing bolts extending up and down, and connecting gaps are formed between the adjacent bolt grooves. The number of the compression bolts is at least two, the connection gaps on the leftmost side and the rightmost side are each internally provided with one compression bolt, the bottom of the bolt groove is provided with a flow guide groove penetrating through the bolt groove in the front-back direction, and the spiral groove milling device can conduct groove milling operation on a plurality of bolts at the same time, so that the work efficiency of spiral groove milling is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of slot milling, in particular to the field of bolt slot milling, and specifically refers to a bolt slot milling tool. Background Art

[0002] Ordinary bolts are a type of fastener consisting of a head and a screw (a cylinder with external threads). They need to be matched with nuts to fasten and connect two parts with through holes. However, some bolts with special functions need to have a keyway milled on the bottom surface of the screw to position it with the matching part. Milling grooves are cut by specific tools. Simply put, a groove is cut using a tool with a bottom blade. The known processing technology for this type of bolt with a milled keyway is as follows: first, place the bolt on a fixture and tighten the screw to clamp the bolt to be processed. Then, after the milling cutter is fed in, a slot is milled out on the horizontally moving drag plate.

[0003] In the prior art, when milling a bolt, generally only one bolt can be milled at a time. After milling one bolt, it is necessary to loosen the bolt and replace the next bolt for milling. Only one bolt can be milled at a time, which greatly increases the working time and reduces the working efficiency. Utility Model Content

[0004] The utility model aims at the deficiencies of the prior art and provides a bolt slot milling tool, which can perform slot milling operations on a plurality of bolts at the same time, thereby improving the working efficiency of the spiral slot milling.

[0005] The utility model is realized through the following technical scheme, which provides a bolt slot milling tool, including a base plate, a lower mold is fixedly connected to the base plate, the lower mold extends in the left-right direction, a plurality of bolt slots extending in the front-back direction are opened on the lower mold, the bolt slots are opened on the upper end surface of the lower mold, the workpiece is supported in the bolt slots, the inner walls of the bolt slots are fitted with the outer walls of the workpiece, a pressing plate is arranged above the lower mold, the pressing plate extends in the left-right direction, a plurality of bolt slots are located between the left and right end surfaces of the pressing plate, and the pressing plate is connected to the lower mold bolts through clamping bolts extending up and down.

[0006] The utility model fixes the lower mold on the lathe by arranging a bottom plate, places the workpiece by arranging the lower mold, the workpiece is placed in the bolt groove, the lower part of the workpiece can be fitted in the bolt groove, a plurality of bolt grooves are arranged, and a plurality of workpieces can be placed on the lower mold at one time, the pressing plate can press the workpiece, and the workpiece can be firmly pressed in the bolt groove by tightening the pressing bolts, a plurality of workpieces are arranged in parallel in the left and right directions, and the saw blade can move to mill grooves for each workpiece installed on the lower mold in turn, thereby greatly improving the bolt milling speed and saving working time.

[0007] As an optimization, a connection gap is formed between adjacent bolt grooves, and at least two clamping bolts are provided, with one clamping bolt being provided in each of the connection gaps on the far left and the far right. The setting of this optimization scheme can press the pressure plate on the workpiece through multiple clamping bolts, so that the workpiece is fixed more firmly, and there is a clamping bolt at both ends to ensure that each workpiece is clamped.

[0008] As an optimization, a guide groove is provided at the bottom of the bolt groove and penetrates the bolt groove in the front-to-back direction. With the setting of this optimization scheme, the guide groove can facilitate the flow of liquid, and the coolant is sprayed on the front end of the workpiece. The used coolant can flow into the guide groove to prevent the coolant from staying between the bolt groove and the workpiece, thereby preventing the workpiece from slipping.

[0009] As an optimization, a slag groove is provided on the front end surface of the lower mold, and the slag groove extends upward to the upper end surface of the lower mold. The setting of this optimization scheme can facilitate the falling of waste slag during the milling process, and the waste slag falls on the slag groove for easy cleaning. At the same time, the slag groove can facilitate the movement of the saw blade and prevent the saw blade from hitting the knife.

[0010] As an optimization, the bottom plate is provided with a plurality of connection holes extending upward and downward, and the plurality of connection holes are respectively located on the left and right sides of the lower mold, and the bottom plate is fixedly connected to the lathe thread by connecting bolts passing through the connection holes. The setting of this optimization scheme fixes the bottom plate on the lathe by bolts for easy disassembly, and at the same time, the left and right sections of the bottom plate are fixedly connected by bolts, so that the bottom plate can be fixed more firmly on the lathe.

[0011] The beneficial effects of the utility model are as follows: the utility model is simple to operate, and can perform milling grooves on multiple workpiece bolts at one time; the pressing plate can press the workpiece, and the workpiece can be firmly pressed in the bolt groove by tightening the clamping bolt; multiple workpieces are arranged side by side in the left and right directions, and the rear end of the workpiece is pressed against the rear end surface of the lower mold, so that the front end surface of the workpiece is flush; the saw blade can move to mill grooves on each workpiece installed on the lower mold in turn, thereby greatly improving the bolt groove milling rate and saving working time. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0013] Figure 2 It is a top view of the utility model without the pressing plate;

[0014] Figure 3 This is a schematic diagram of workpiece slot milling;

[0015] As shown in the figure:

[0016] 1. Base plate, 2. Lower mold, 3. Workpiece, 4. Notch, 5. Pressing plate, 6. Clamping bolt, 7. Guide groove, 8. Bolt groove, 9. Slag groove, 10. Saw blade, 11. Tool bar. DETAILED DESCRIPTION

[0017] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0018] like Figures 1 to 3 The utility model is shown as a bolt milling tool, including a base plate 1, which extends in the horizontal direction and is installed on a lathe. A lower mold 2 is fixedly connected to the base plate, and the lower mold extends in the left-right direction. A plurality of connecting holes extending up and down are opened on the base plate. Two connecting holes are provided, and the two connecting holes are respectively located on the left and right sides of the lower mold. A plurality of base plates are fixedly connected to the lathe threads by connecting bolts passing through the connecting holes. The front end face of the lower mold is flush with the front end face of the base plate 1, and the rear end face of the base plate is flush with the rear end face of the lower mold 2.

[0019] The lower mold 2 is provided with a plurality of bolt grooves 8 extending in the front-to-back direction. In the present embodiment, there are four bolt grooves arranged in the left-to-right direction. A connection gap is formed between adjacent bolt grooves 8. The left-to-right length of the connection gap is greater than the maximum diameter of the bolt head of the workpiece. The bolt groove is provided on the upper end face of the lower mold. The bolt groove 8 is arc-shaped. The workpiece 3 is supported in the bolt groove 8. The inner wall of the bolt groove is fitted with the outer wall of the workpiece. The bolt head of the workpiece is located behind the bolt groove 8. The front end face of the bolt rod of the workpiece extends to the front of the bolt groove.

[0020] A pressing plate 5 is arranged above the lower mold, and the pressing plate 5 extends in the left-right direction. A plurality of bolt grooves 8 are located between the left and right end faces of the pressing plate 5. A plurality of upper holes extending in the up-down direction are opened on the pressing plate, and the upper holes penetrate the pressing plate 5. The pressing plate is connected to the lower mold bolts through the clamping bolts 6 extending up and down. The clamping bolts 6 pass through the upper holes to clamp the pressing plate on the workpiece. The lower end face of the pressing plate 5 contacts the upper end face of the bolt rod of the workpiece, so that the workpiece is clamped in the bolt groove.

[0021] At least two clamping bolts are provided, and a clamping bolt 6 is provided in the leftmost and rightmost connection gaps. A guide groove 7 is provided at the bottom of the bolt groove and penetrates the bolt groove in the front-to-back direction. The guide groove 7 is rectangular. A slag groove 9 is provided on the front end face of the lower mold. The slag groove extends upward to the upper end face of the lower mold. The slag groove 9 extends from the left end face of the lower mold to the right end face of the lower mold.

[0022] The tool bar 11 of the lathe extends in the up-down direction to the front of the bolt slot, and a saw blade 10 is fixed on the tool bar. The saw blade contacts the front end of the workpiece, and the tool bar moves so that the saw blade cuts a notch 4 on the workpiece.

[0023] During use of this embodiment, the workpiece 3 is placed in the bolt groove, and the workpiece is pushed so that the front end face of the bolt head of the workpiece is pressed against the rear end face of the lower mold. A workpiece is placed in each bolt groove, and the pressure plate 5 is placed on the upper end face of the bolt rod of the workpiece, so that the clamping bolt passes through the upper hole of the pressure plate 5 and is threadedly connected to the lower mold 2. The clamping bolt 6 is tightened to firmly clamp the workpiece in the bolt groove 8, and the tool bar 11 of the lathe moves to the left side of the leftmost workpiece, and the position is adjusted so that the tool bar drives the saw blade 10 to move slowly to the right. The saw blade passes through each workpiece in turn and mills a groove 4 on the workpiece. After the milling of all four workpieces is completed, the clamping bolt is loosened, the workpiece is pulled out, and other workpieces to be milled are replaced. The above steps are repeated to complete the milling operation of the four workpieces in this group.

[0024] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A bolt slot milling tool, characterized in that: The invention comprises a bottom plate (1) on which a lower mould (2) is fixedly connected. The lower mould extends in the left-right direction. The lower mould is provided with a plurality of bolt grooves (8) extending in the front-back direction. The bolt grooves are provided on the upper end surface of the lower mould. The workpiece is supported in the bolt grooves (8). The inner wall of the bolt grooves fits the outer wall of the workpiece. A pressing plate (5) is provided above the lower mould. The pressing plate (5) extends in the left-right direction. The plurality of bolt grooves (8) are located between the left and right end surfaces of the pressing plate (5). The pressing plate is bolt-connected to the lower mould via clamping bolts (6) extending up and down.

2. A bolt slot milling tool according to claim 1, characterized in that: A connection gap is formed between adjacent bolt slots (8), and at least two clamping bolts are provided, with a clamping bolt (6) being provided in each of the leftmost and rightmost connection gaps.

3. The bolt slot milling tool according to claim 1, characterized in that: A guide groove (7) is provided at the bottom of the bolt groove and penetrates the bolt groove in the front-to-back direction.

4. The bolt slot milling tool according to claim 1, characterized in that: A slag groove (9) is provided on the front end surface of the lower mold, and the slag groove extends upward to the upper end surface of the lower mold.

5. The bolt slot milling tool according to claim 1, characterized in that: The bottom plate is provided with a plurality of connection holes extending up and down, the plurality of connection holes are respectively located on the left and right sides of the lower mold, and the bottom plate is fixedly connected with the lathe thread by connection bolts passing through the connection holes.

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