Drilling tool for pull rod head

Abstract

The utility model discloses a pull rod head drilling tool which comprises a table top, a positioning groove is formed in the table top in a concave mode, a through hole is formed in the position, corresponding to the drilling position of a workpiece, of the positioning groove, an abutting sliding block is connected to one side of the positioning groove in a sliding mode, and a sliding groove used for the abutting sliding block to slide left and right is formed in the table top. A workpiece abuts against one side of a positioning groove through an abutting sliding block, the front side of the positioning groove is through, a pair of rod limiting sliding blocks is arranged at the front end of the positioning groove in a left-right spaced mode, the rod limiting sliding blocks are used for limiting the rod of the workpiece, and the rod limiting sliding blocks and the abutting sliding block are both provided with strip-shaped holes extending left and right. A bolt penetrating through the strip-shaped hole is fixed on the table top; the abutting sliding block is connected with a pressing plate used for being pressed on a workpiece through a bolt. The positioning groove is provided with a plurality of check blocks of different specifications, and the check blocks are detachably connected into the positioning groove. And meanwhile, the device is also suitable for workpieces of various specifications.

Description

TECHNICAL FIELD

[0001] The utility model relates to a drilling technology field, concretely relates to a drilling tool of pull rod head. BACKGROUND

[0002] The pull rod head is one of the essential accessories in the manufacturing process of the railway freight car braking device, and the production and processing of the accessory also become the necessary link of the total production process. At present, the pull rod head mainly adopts the scribing drilling mode, the drilling center is scribed on the accessory through the artificial scribing mode, then the pull rod head is fixed on the radial drilling machine through the clamp, and the worker adjusts the drill bit to the scribing center to drill.

[0003] Such processing mode relies on manual scribing for each accessory, and the working efficiency is low; the drill worker needs to adjust the drill bit to the scribing center every time for processing due to the different scribing hole positions of different models of pull rod head blanks, and the processing flow is complicated; the pull rod head as a large quantity of accessories is difficult to supply the production demand only through the scribing drilling mode. INNOVATION

[0004] The utility model aims at solving the technical problems existing in the prior art, and particularly innovatively provides a drilling tool of pull rod head, which does not need to be positioned for many times, saves time and effort, and is also suitable for various specifications of workpieces.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a drilling tool of pull rod head, including the mesa, the mesa is recessed with the positioning recess, the positioning recess is provided with the through hole corresponding to the drilling position of the workpiece, the one side of the positioning recess is connected with the abutting sliding block through the sliding, the mesa is provided with the sliding slot for abutting sliding block left and right sliding, the workpiece is abutted in the one side of the positioning recess through the abutting sliding block, the front side of the positioning recess is through, and a pair of rod part limit sliding blocks are arranged on the front end of the positioning recess and spaced apart left and right, the rod part limit sliding blocks are used for limiting the rod part of the workpiece, the rod part limit sliding blocks and the abutting sliding block are all provided with the strip hole extending left and right, and are fixed on the mesa through the bolt passing through the strip hole, the abutting sliding block is connected with the pressing plate for pressing on the workpiece through the bolt,

[0006] The positioning recess is provided with a plurality of different specifications of the stopper, the stopper is used for adjusting the front and back positions of the workpiece, and the stopper is detachably connected in the positioning recess.

[0007] In the above-mentioned scheme, the one side of the pressing plate is provided with the left and right extension of the slot for the bolt, the slot is used for adjusting the length of the pressing plate pressed on the workpiece, and the pressing stability is improved.

[0008] The bottom of the table top is provided with a support frame, and a chip removal inclined plate located below the table top is arranged on the support frame, and the chip removal inclined plate is used for discharging iron chips generated in the drilling process, is convenient and fast, and the iron chips cannot be accumulated in the tool.

[0009] In the scheme, the support frame is surrounded by three vertical plates located on the left side, the right side and the rear side, and the chip removal inclined plate is arranged in a manner that the front is lower and the rear is higher.

[0010] In the scheme, a chip prevention frame for being arranged outside the support frame is further included, the chip prevention frame comprises a slide plate with a front lower and a rear higher, a supporting leg is fixedly arranged at the rear end of the slide plate, the front end of the slide plate is used for abutting against the table top of the drilling machine, a baffle is vertically arranged on the left side and the right side of the slide plate, and a clamping opening for clamping the support frame is arranged on the front side of the slide plate.

[0011] In the scheme, the clamping opening extends to the front end of the slide plate and penetrates through, so that the support frame can be clamped.

[0012] In conclusion, the positioning groove, the abutting sliding block and the rod limiting sliding block can position the installation position of the workpiece, so that deviation is avoided as much as possible. The pressing plate can prevent the workpiece from being displaced in the vertical direction during the drilling process, and the drilling precision is further improved. The stopper can be applied to workpieces of different models and specifications, has a wide application range, and is used for adjusting workpieces of different models, so that the workpiece blank drilling position is located below the drill bit, and there is no need to draw a line. The chip prevention frame can block the flying chips generated during the drilling process to a certain extent, and the chips can be easily cleaned. The chip removal inclined plate can better prevent the accumulation of burrs and iron chips in the tool, reduce the probability of the jamming phenomenon of the pull rod head after drilling, and improve the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a perspective view of the utility model.

[0014] Figure 2 is Figure 1 a top view of

[0015] Figure 3 is a sectional view of the utility model.

[0016] Figure 4 is a perspective view of the table top. DETAILED DESCRIPTION

[0017] The utility model will be further described below by combining with the drawings:

[0018] As Figures 1-4 shown, a drill tool for drawbar head includes a table 1, and a positioning groove 1a is recessed on the table 1. The positioning groove 1a is provided with a H-shaped through hole 1c corresponding to the drilling position of the workpiece, which can support the accessory and facilitate chip removal. One side of the positioning groove 1a is connected with a abutting sliding block 6 through sliding connection. The table 1 is provided with a sliding groove for the abutting sliding block 6 to slide left and right. The workpiece is abutted on one side of the positioning groove 1a through the abutting sliding block 6, so as to position the installation position of the workpiece. A pressing plate 5 for pressing on the workpiece is connected on the abutting sliding block 6 through bolts. The height of the top of the abutting sliding block 6 is flush with the top of the workpiece. One side of the pressing plate 5 extends towards the positioning groove 1a and is pressed on the workpiece. The pressing plate 5 is also fixed on the abutting sliding block 6 through bolts 8. The workpiece can be pressed by the pressing plate 5, so as to avoid the vertical displacement of the workpiece during drilling. One side of the pressing plate 5 is provided with a left and right extending missing slot for the bolts 8 to pass through. The missing slot is used to adjust the length of the pressing plate 5 pressed on the workpiece, and improve the pressing stability.

[0019] The front side of the positioning groove 1a is through, and a pair of rod limiting sliding blocks 7 are arranged on the front end of the positioning groove 1a. The rod limiting sliding blocks 7 are used for limiting the rod of the workpiece. The rod limiting sliding blocks 7 and the abutting sliding block 6 are both provided with left and right extending strip-shaped holes, and are fixed on the table 1 through the bolts 8 passing through the strip-shaped holes.

[0020] The positioning groove 1a is provided with a plurality of different specifications of stop blocks 3. The stop blocks 3 are used for adjusting the front and back positions of the workpiece, and different types of drawbar heads only need to replace the stop blocks 3. The stop blocks 3 are detachably connected to the rear side of the positioning groove 1a. At the same time, the stop blocks 3 are often worn during daily use, and the stop blocks 3 can be replaced.

[0021] The bottom of the table 1 is provided with a support frame, which is surrounded by three vertical plates 9 located on the left and right sides and the rear side. The support frame further includes a bottom plate 11, and the vertical plates 9 are fixed on the bottom plate 11. The middle part of the bottom plate 11 is provided with a weight-reducing hole. The support frame is provided with a chip removal inclined plate 10 located below the table 1. The chip removal inclined plate 10 is arranged in a manner that the front is lower and the rear is higher. The left and right ends of the chip removal inclined plate 10 are fixed on the vertical plates 9 on the left and right sides, and the rear end of the chip removal inclined plate 10 is fixed on the vertical plate 9 on the rear side. The chip removal inclined plate 10 and the vertical plates 9 on the two sides form a chip removal groove, so that the iron chips generated during drilling can be discharged and not accumulated inside the tool. Only three vertical plates 9 are surrounded, which facilitates the discharge of iron chips from the front side.

[0022] The support frame is further provided with a chip guard 12. The chip guard 12 comprises a front-low rear-high sliding plate 12a. The rear end of the sliding plate 12a is fixedly provided with a supporting leg 12d. The front end of the sliding plate 12a abuts against the drill press workbench surface. The left and right sides of the sliding plate 12a are vertically provided with baffles 12b. The front side of the sliding plate 12a is provided with a card hole 12c for clamping the support frame. The chip guard 12 can block the flying chips generated in the drilling process, effectively protect the left and right sides and the rear side, and drop the flying chips on the front side. The card hole 12c extends to the front end of the sliding plate 12a and penetrates through, facilitating the clamping of the support frame.

[0023] Before use, first fix the tool to the drill press workbench surface through the clamp, put the workpiece template into the positioning groove 1a, adjust the abutting block 6 and the rod limiting block 7 to align the drill hole template, put the drill bit into the drill hole of the drill hole template, and complete the positioning of the tool.

[0024] During drilling, the workpiece to be processed is placed in the positioning groove 1a, the head of the workpiece is pressed against the stop block 3, the abutting block 6 is slid and fixed to the middle of the workpiece, the two rod limiting blocks 7 are adjusted to fix the tail of the workpiece, and the pressing plate 5 presses the middle of the workpiece. After positioning, it is fixed by bolts.

[0025] Adjust the radial drill press to drill. The iron chips are discharged through the chip removal inclined plate 10 during drilling. After drilling a through hole, lift the drill bit over the workpiece, close the drill press, and take out the workpiece. After processing, use the air gun to remove the iron chips to prevent positioning deviation.

[0026] Directly save the scribing process and reduce the processing cost. After clamping the workpiece to the tool, only one adjustment of the drill bit is needed for mass production of accessories, which can greatly improve work efficiency and meet the needs of mass production. The positioning of the drill hole template greatly improves the positioning accuracy. The same batch of workpieces do not need to be repositioned, improving production efficiency and not relying on manual alignment of the drill bit. Quality control can be achieved. If the drill hole deviates, it only needs to be repositioned for further processing. The tool design adopts lightweight design, which reduces the weight of the tool while ensuring the strength of the tool, reducing the labor intensity of the operator. The workpiece production batch is large, and the tool wears out greatly during daily use. For frequently worn parts, the sliding block, baffle, pad, and template sleeve are made of high-strength 45 steel. Each part of the tool is connected by bolts. Any part that wears out can be easily disassembled and replaced. Even if the tool is damaged, replacing the parts will not affect daily production. The tool bottom is designed with a chip removal inclined plate, surrounded by a chip guard, which can effectively prevent iron chips from flying and reduce the difficulty of processing and cleaning and the risk caused by flying iron chips. The product quality, positioning accuracy, processing difficulty, production efficiency, labor intensity, and other goals are improved.

Claims

1. A drill jig for a drawbar head, characterized by: The utility model provides a drilling jig, including the mesa (1), the mesa (1) is recessed with the positioning recess (1a), the positioning recess (1a) is provided with the through -hole (1c) to the drilling position of work piece, one side of the positioning recess (1a) is connected with the abutting sliding block (6) through sliding, the mesa (1) is provided with the slide groove for abutting sliding block (6) left and right sliding, and the work piece is abutted in the one side of positioning recess (1a) through abutting sliding block (6), the front side of the positioning recess (1a) is through, and a pair of rod part limit sliding blocks (7) are arranged at the front end of the positioning recess (1a) and spaced apart left and right, the rod part limit sliding block (7) is used for the location for the rod part of work piece, and the rod part limit sliding block (7) and abutting sliding block (6) are all provided with the strip hole extending left and right, and are fixed on the mesa (1) through the bolt (8) passing through the strip hole, the abutting sliding block (6) is connected with the pressing plate (5) for pressing on the work piece through bolt, The positioning recess (1a) is equipped with a plurality of different specifications of stop block (3), the stop block (3) is used for adjusting the front and back positions of work piece, and the stop block (3) is detachably connected in the positioning recess (1a).

2. A drawbar head drilling fixture according to claim 1, wherein: The pressing plate (5) is provided with the left and right extending slot for the bolt (8) passing through on one side, and the slot is used to adjust the length of the pressing plate (5) pressed on the work piece.

3. The drawbar head drilling fixture of claim 1 wherein: The bottom of the mesa (1) is provided with a support frame, the support frame is provided with the chip removal inclined plate (10) below the mesa (1), and the chip removal inclined plate (10) is used for the iron chips generated in the drilling process to be discharged.

4. A drawbar head drilling jig according to claim 3 wherein: The support frame is surrounded by three vertical plates (9) on the left side, the right side and the back side, and the chip removal inclined plate (10) is arranged from low to high in front to back.

5. The drawbar head drilling fixture of claim 1 wherein: It also includes the anti -chip frame (12) for being supported outside the support frame, the anti -chip frame (12) includes the slide plate (12a) of low front and high back, the rear end of the slide plate (12a) is fixedly provided with the supporting leg (12d), the front end of the slide plate (12a) is used to abut with the drilling bed worktop, the left and right sides of the slide plate (12a) are vertically provided with the baffle (12b), and the slide plate (12a) is provided with the bayonet (12c) for supporting the frame to be clamped on the front side.

6. A drawbar head drilling fixture according to claim 5 wherein: The bayonet (12c) extends to the front end of the slide plate (12a) and penetrates.

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