Gas path pipe end broaching device

Abstract

The utility model relates to a broaching device for the end of a gas path pipe. The device comprises a motor, a linear guide rail, a sliding block, an air path pipe mounting frame, a hollow shaft, a second drill chuck and a clamp. The motor and the linear guide rail are fixed to the left side and the right side of the base respectively, the reamer is installed on a rotating shaft of the motor through the first drill chuck, and the axis of the rotating shaft of the motor is parallel to the linear guide rail. The sliding block is installed on the linear guide rail, the air path pipe installation frame is fixedly installed on the upper surface of the sliding block, the hollow shaft is horizontally fixed to the middle of the air path pipe installation frame, the left end of the hollow shaft is fixedly connected and communicated with the right end of the second drill chuck, and the left end of the air path pipe penetrates into the right end of the hollow shaft and extends out of the left end of the second drill chuck. The clamp is mounted on the upper surface of the gas path pipe mounting frame, and an inverted L-shaped positioning plate is connected to a chuck of the clamp; a left limiting block is fixed on the linear guide rail; the machining quality of the gas path pipe is improved, operation is easy, fast and safe, and the production cost is low.

Description

(1) Technical field:

[0001] The utility model relates to a hole expanding device, in particular to a hole expanding device for the end of an air pipe. (2) Background technology:

[0002] A gas chromatograph is a device used for chromatographic separation and analysis. It includes a sample injection system, a detection system, a recording and data processing system, a temperature control system, and a mobile phase control system. To facilitate gas circulation within the gas chromatograph, several gas lines are installed. During installation, these lines sometimes need to be cut. Using a tube cutter or file to cut the line will inevitably shrink the end of the line, sometimes leaving debris and burrs, which can affect the ability to fill filters or chemicals inside the line.

[0003] In order not to affect the filling quality inside the air tube, it is necessary to expand the end of the air tube. In the existing technology, the operation method of manually trimming the cutting surface or the operation method of using a motor to drive the reaming drill (in this case, the operator needs to hold the air tube in hand and contact the rotating reaming drill to perform the reaming work). The operation method of manually trimming the cutting surface has low work efficiency and is suitable for single-piece or small-batch production. The operation method of using a motor to drive the reaming drill is similar to the operation method of existing machine tools. Although this operation method improves efficiency, it has the following disadvantages: 1. The operator needs to hold the air tube in hand and contact the rotating drill bit, which is relatively dangerous; 2. When the operator holds the air tube in hand and contacts the reaming drill, the reaming depth cannot be guaranteed, and the quality of the processed end face is uneven. 3. When the operator holds the air tube, it cannot be guaranteed that the center of the air tube and the center of the drill bit coincide, and the processing accuracy cannot be guaranteed.

[0004] The existing machine tools are general-purpose devices and are not suitable for reaming the ends of gas pipes: when the machine tools replace the tools (including reaming drills), the tool extension length is not fixed, and when controlling the feed rate, the tool must be aligned first, and then the feed rate of the workpiece is controlled to achieve it. Moreover, the tool needs to be aligned every time a workpiece is clamped or a tool is replaced, which is very cumbersome to use and has low work efficiency. (3) Utility model content:

[0005] The technical problem to be solved by the utility model is to provide a gas pipe end reaming device, which improves the processing quality of the gas pipe, is simple, fast, safe, and has low production cost, and can realize rapid batch processing.

[0006] The technical solution of this utility model:

[0007] A device for reaming a hole at the end of an air pipe comprises a motor, a first drill chuck, a reaming drill and a base. The reaming drill is mounted on the rotating shaft of the motor through the first drill chuck. The rotating shaft of the motor is arranged horizontally. The axes of the reaming drill and the first drill chuck coincide with the axis of the motor rotating shaft. The device also comprises a linear guide rail, a slider, an air pipe mounting frame, a hollow shaft, a second drill chuck and a fixture. The motor and the linear guide rail are respectively fixed on the left and right sides of the upper surface of the base. The linear guide rail is arranged in the left and right directions. The axis of the motor rotating shaft is parallel to the linear guide rail. The slider is mounted on the linear guide rail. The slider and the linear guide rail cooperate with each other. The air pipe mounting frame is fixedly mounted on the upper surface of the slider. The hollow shaft is horizontally fixed to the middle part of the air pipe mounting frame. The axis of the hollow shaft coincides with the axis of the motor rotating shaft. The left end of the hollow shaft is fixedly connected and communicated with the right end of the second drill chuck, the left end of the air pipe passes through the right end of the hollow shaft and extends out from the left end of the second drill chuck, and the axis of the air pipe and the second drill chuck also coincides with the axis of the motor shaft; the clamp is installed on the upper surface of the air pipe mounting frame, and an inverted L-shaped positioning plate is connected to the chuck of the clamp, the horizontal part of the positioning plate is connected to the chuck of the clamp, and the vertical part of the positioning plate is free; when the clamp is tightened, the vertical part of the positioning plate blocks the left side of the left end of the air pipe, and the surface of the vertical part of the positioning plate is perpendicular to the axis of the air pipe; when the clamp is opened, the positioning plate flips upward to above the second drill chuck; a left limit block is fixed on the linear guide rail and on the left side of the slider, and the left limit block is used to limit the left stroke of the slider.

[0008] A protective panel is provided to the right of the right end of the reamer. The surface of the protective panel is perpendicular to the axis of the reamer. A first through hole is opened in the middle of the surface of the protective panel. The axis of the reamer passes through the center of the first through hole. The inner diameter of the first through hole is larger than the outer diameter of the air pipe. The first through hole can be used for the air pipe to pass through. The protective panel is connected to the right end face of the motor through the panel bracket.

[0009] The first through hole is a circular through hole; the panel bracket includes a left vertical plate, a front vertical plate and a lower horizontal plate, the left side of the left vertical plate is fixedly connected to the right end face of the motor, the rotating shaft of the motor passes through the second through hole in the middle of the left vertical plate, the left and right sides of the front vertical plate are respectively fixedly connected to the left vertical plate and the front side of the protective panel, the left and right sides of the lower horizontal plate are respectively fixedly connected to the left vertical plate and the lower side of the protective panel, and the lower side of the front vertical plate is fixedly connected to the front side of the lower horizontal plate.

[0010] The space enclosed by the protective panel and the panel bracket forms a hole expansion operation area, which can not only be used to collect debris generated during hole expansion, but also ensure production safety.

[0011] The first drill chuck and the second drill chuck are both hand-tight drill chucks; the fixture is a vertical quick fixture; the horizontal part of the positioning plate is connected to the chuck of the fixture by bolts, and the bolt mounting holes on the chuck of the fixture are long strip-shaped through holes in the left and right directions.

[0012] A right limit block is fixed on the linear guide rail and on the right side of the slider. The right limit block is used to limit the right stroke of the slider to prevent the slider from sliding out of the linear guide rail.

[0013] The left limit block and the right limit block are detachably connected to the linear guide rail.

[0014] Alternatively, the slider, the air pipe mounting bracket and the hollow shaft may also be an integrated structure.

[0015] In actual applications, the combination of the linear guide rail, the slider, the left limit block and the right limit block can also be replaced by a linear motion mechanism such as a cylinder, a hydraulic cylinder, or an electric push rod.

[0016] When the reaming device at the end of the air pipe is working, the reaming drill is first clamped on the first drill chuck, and the protruding length of the reaming drill is positioned with a positioning sleeve before the first drill chuck is tightened; the positioning sleeve is a pipe sleeve with an inner hole as a circular stepped through hole, the inner hole on one side of the positioning sleeve is a large hole, and the inner hole on the other side is a small hole. The inner diameter of the large hole is larger than the outer diameter of the reaming drill, and the inner diameter of the small hole is smaller than the outer diameter of the reaming drill; the positioning sleeve is put on the reaming drill from the large hole end, so that the large hole end face of the positioning sleeve contacts the right end face of the first drill chuck, and the drill bit cone surface of the reaming drill contacts the inner step of the positioning sleeve. At this time, the reaming drill reaches the required position, and then the first drill chuck is tightened and the positioning sleeve is removed.

[0017] By designing positioning sleeves of different lengths and inner diameters, the positioning requirements of reamers with different diameters and extension lengths can be met.

[0018] An annular step is provided on the outer surface of the positioning sleeve. At the same time, a positioning sleeve placement hole is opened on the lower horizontal plate of the panel bracket to facilitate the storage of the positioning sleeve. The inner diameter of the positioning sleeve placement hole is larger than the outer diameter of the positioning sleeve and smaller than the outer diameter of the annular step.

[0019] After installing the reamer, tighten the fixture and insert the air pipe to be trimmed into the hollow shaft and the second drill chuck, so that the left end of the air pipe contacts the surface of the vertical part of the positioning plate. Then tighten the second drill chuck and open the fixture to flip the positioning plate upward to prevent it from blocking the air pipe from moving to the left. At this time, you can push the slider to move to the left, thereby driving the air pipe to move to the left to the reamer for reaming.

[0020] The positioning plate can limit the length of the air pipe extending from the second drill chuck. By adjusting the left and right positions of the bolts on the fixture chuck, the positioning plate can be moved left and right, thereby adjusting the length of the air pipe extending from the second drill chuck.

[0021] The positioning plate, positioning sleeve and left limit block work together to limit the contact depth between the air pipe and the reamer, thereby improving the processing quality.

[0022] Beneficial effects of the utility model:

[0023] 1. The utility model provides a linear guide rail opposite the reaming drill, installs an air pipe mounting bracket on the slider on the linear guide rail, installs the air pipe in the hollow shaft on the air pipe mounting bracket and the second drill chuck, and makes the axis of the air pipe and the reaming drill coincide, thereby improving the processing accuracy; an inverted L-shaped positioning plate is connected to the clamp on the air pipe mounting bracket, and the positioning plate is used to limit the extension length of the air pipe. Combined with the position of the left limit block on the linear guide rail and the extension length of the reaming drill (which can be limited by a positioning sleeve), the contact depth of the air pipe and the reaming drill can be controlled to make the expanded hole depth consistent; therefore, the utility model improves the processing quality of the air pipe, and is simple and quick to operate, and can realize rapid batch processing.

[0024] 2. A protective panel is provided on the right side of the right end of the reaming drill of the present invention. A first through hole is provided in the middle of the surface of the protective panel for the passage of the air pipe. The protective panel can prevent flying debris from injuring people during the reaming operation, thereby ensuring production safety.

[0025] 3. The utility model has a simple structure and low production cost. (IV) Description of the accompanying drawings:

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the gas pipe end expansion device;

[0027] Figure 2 It is a partially enlarged three-dimensional structural diagram of the reaming device at the end of the gas pipe;

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the partial installation method of the gas pipe end expansion device;

[0029] Figure 4 This is a schematic diagram of the enlarged axial cross-section structure of the first drill chuck, the reamer, and the positioning sleeve. (V) Specific embodiments:

[0030] See also Figures 1 to 4, In the figure, the reaming device at the end of the gas pipe comprises a motor 1, a first drill chuck 2, a reaming drill 3 and a base 4. The reaming drill 3 is mounted on the rotating shaft of the motor 1 through the first drill chuck 2. The rotating shaft of the motor 1 is arranged horizontally. The axes of the reaming drill 3 and the first drill chuck 2 coincide with the axis of the rotating shaft of the motor 1. The device also comprises a linear guide 5, a slider 6, a gas pipe mounting bracket 7, a hollow shaft 8, a second drill chuck 9 and a fixture 10; the motor 1 and the linear guide 5 are respectively fixed to the left and right sides of the upper surface of the base 4, the linear guide 5 is arranged in the left and right directions, and the axis of the rotating shaft of the motor 1 is parallel to the linear guide 5; the slider 6 is mounted on the linear guide 5, the slider 6 and the linear guide 5 cooperate with each other, the gas pipe mounting bracket 7 is fixedly mounted on the upper surface of the slider 6, the hollow shaft 8 is horizontally fixed to the middle part of the gas pipe mounting bracket 7, the axis of the hollow shaft 8 coincides with the axis of the rotating shaft of the motor 1, and the left side of the hollow shaft 8 The end is fixedly connected and communicated with the right end of the second drill chuck 9, and the left end of the air pipe 21 passes through the right end of the hollow shaft 8 and extends out from the left end of the second drill chuck 9, and the axis of the air pipe 21 and the second drill chuck 9 also coincides with the axis of the rotating shaft of the motor 1; the clamp 10 is installed on the upper surface of the air pipe mounting bracket 7, and the chuck of the clamp 10 is connected with an inverted L-shaped positioning plate 11, the transverse part of the positioning plate 11 is connected to the chuck of the clamp 10, and the vertical part of the positioning plate 11 is free; when the clamp 10 is tightened, the vertical part of the positioning plate 11 blocks the left side of the left end of the air pipe 21, and the surface of the vertical part of the positioning plate 11 is perpendicular to the axis of the air pipe 21; when the clamp 10 is opened, the positioning plate 11 flips upward to the top of the second drill chuck 9; a left limit block 12 is fixed on the linear guide rail 5 and on the left side of the slider 6, and the left limit 12 is used to limit the left stroke of the slider 6.

[0031] A protective panel 22 is provided to the right of the right end of the reamer 3. The surface of the protective panel 22 is perpendicular to the axis of the reamer 3. A first through hole 23 is opened in the middle of the surface of the protective panel 22. The axis of the reamer 3 passes through the center of the first through hole 23. The inner diameter of the first through hole 23 is larger than the outer diameter of the air pipe 21. The first through hole 23 can be used for the air pipe 21 to pass through. The protective panel 22 is connected to the right end face of the motor 1 through the panel bracket.

[0032] The first through hole 23 is a circular through hole; the panel bracket includes a left vertical plate 14, a front vertical plate 15 and a lower horizontal plate 16. The left side of the left vertical plate 14 is fixedly connected to the right end face of the motor 1, and the rotating shaft of the motor 1 passes through the second through hole 20 in the middle of the left vertical plate 14. The left and right sides of the front vertical plate 15 are respectively fixedly connected to the left vertical plate 14 and the front side of the protective panel 22, and the left and right sides of the lower horizontal plate 16 are respectively fixedly connected to the left vertical plate 14 and the lower side of the protective panel 22, and the lower side of the front vertical plate 15 is fixedly connected to the front side of the lower horizontal plate 16.

[0033] The space enclosed by the protective panel 22 and the panel bracket forms a hole enlarging operation area, which can not only be used to collect debris generated during hole enlarging, but also ensure production safety.

[0034] The first drill chuck 2 and the second drill chuck 9 are both hand-tight drill chucks; the clamp 10 is a vertical quick clamp; the transverse part of the positioning plate 11 is connected to the chuck of the clamp 10 by a bolt 19, and the bolt mounting hole on the chuck of the clamp 10 is a long strip through hole in the left and right directions.

[0035] A right limit block 13 is fixed on the linear guide rail 5 and located on the right side of the slider 6. The right limit block 13 is used to limit the right stroke of the slider 6 to prevent the slider 6 from sliding out of the linear guide rail 5.

[0036] The left limit block 12 and the right limit block 13 are detachably connected to the linear guide rail 5 .

[0037] When the reaming device at the end of the air pipe is working, the reaming drill 3 is first clamped on the first drill chuck 2, and the protruding length of the reaming drill 3 is positioned with the positioning sleeve 18 before the first drill chuck 2 is tightened; the positioning sleeve 18 is a pipe sleeve with an inner hole as a circular stepped through hole, and the inner hole on one side of the positioning sleeve 18 is a large hole, and the inner hole on the other side is a small hole. The inner diameter of the large hole is larger than the outer diameter of the reaming drill 3, and the inner diameter of the small hole is smaller than the outer diameter of the reaming drill 3; the positioning sleeve 18 is put on the reaming drill 3 from the large hole end, so that the large hole end face of the positioning sleeve 18 contacts the right end face of the first drill chuck 2, and the drill bit cone surface of the reaming drill 3 contacts the inner step of the positioning sleeve 18. At this time, the reaming drill 3 reaches the required position, and then the first drill chuck 2 is tightened and the positioning sleeve 18 is removed.

[0038] By designing positioning sleeves 18 of different lengths and inner diameters, the positioning requirements of reamers 3 of different diameters and extension lengths can be met.

[0039] An annular step 24 is provided on the outer surface of the positioning sleeve 18. At the same time, a positioning sleeve placement hole 17 is opened on the lower horizontal plate 16 of the panel bracket to facilitate the storage of the positioning sleeve 18. The inner diameter of the positioning sleeve placement hole 17 is larger than the outer diameter of the positioning sleeve 18 and smaller than the outer diameter of the annular step 24.

[0040] After installing the reamer 3, tighten the clamp 10 and insert the air pipe 21 to be trimmed into the hollow shaft 8 and the second drill chuck 9, so that the left end of the air pipe 21 contacts the surface of the vertical part of the positioning plate 11, then tighten the second drill chuck 9, and open the clamp 10 to flip the positioning plate 11 upward to prevent it from blocking the air pipe 21 from moving to the left. At this time, you can push the slider 6 to move to the left, thereby driving the air pipe 21 to move to the left to the reamer 3 for reaming.

[0041] The positioning plate 11 can limit the length of the air pipe 21 extending from the second drill chuck 9. By adjusting the left and right positions of the bolts 19 on the chuck of the clamp 10, the positioning plate 11 can be moved left and right, thereby adjusting the length of the air pipe 21 extending from the second drill chuck 9.

[0042] The positioning plate 11 , the positioning sleeve 18 and the left limit block 12 work together to limit the contact depth between the air pipe 21 and the reamer 3 , thereby improving the processing quality.

Claims

1. A gas line pipe end reaming device, comprising a motor, a first drill chuck, a reamer and a base, wherein the reamer is mounted on the rotating shaft of the motor through the first drill chuck, the rotating shaft of the motor is arranged horizontally, and the axes of the reamer and the first drill chuck coincide with the axis of the rotating shaft of the motor, wherein: It also includes a linear guide, a slider, an air pipe mounting frame, a hollow shaft, a second drill chuck and a fixture; the motor and the linear guide are respectively fixed on the left and right sides of the upper surface of the base, the linear guide is arranged along the left and right directions, and the axis of the motor shaft is parallel to the linear guide; the slider is installed on the linear guide, the slider and the linear guide cooperate with each other, the air pipe mounting frame is fixedly installed on the upper surface of the slider, the hollow shaft is horizontally fixed in the middle of the air pipe mounting frame, the axis of the hollow shaft coincides with the axis of the motor shaft, the left end of the hollow shaft is fixedly connected and communicated with the right end of the second drill chuck, and the left end of the air pipe passes through the right end of the hollow shaft. The air pipe and the second drill chuck are inserted into and extended from the left end of the second drill chuck, and the axis of the air pipe and the second drill chuck also coincide with the axis of the motor shaft; the clamp is installed on the upper surface of the air pipe mounting frame, and an inverted L-shaped positioning plate is connected to the chuck of the clamp, the transverse part of the positioning plate is connected to the chuck of the clamp, and the vertical part of the positioning plate is free; when the clamp is tightened, the vertical part of the positioning plate blocks the left side of the left end of the air pipe, and the surface of the vertical part of the positioning plate is perpendicular to the axis of the air pipe; when the clamp is opened, the positioning plate flips upward to the top of the second drill chuck; a left limit block is fixed on the linear guide rail and on the left side of the slider.

2. The gas line pipe end hole expanding device according to claim 1, characterized in that: A protective panel is provided to the right of the right end of the reamer, the surface of the protective panel is perpendicular to the axis of the reamer, a first through hole is opened in the middle of the surface of the protective panel, the axis of the reamer passes through the center of the first through hole, the inner diameter of the first through hole is larger than the outer diameter of the air pipe, and the protective panel is connected to the right end face of the motor through a panel bracket.

3. The gas line pipe end hole expanding device according to claim 2, characterized in that: The first through hole is a circular through hole; the panel bracket includes a left vertical plate, a front vertical plate and a lower horizontal plate, the left side surface of the left vertical plate is fixedly connected to the right end surface of the motor, the rotating shaft of the motor passes through the second through hole in the middle of the left vertical plate, the left and right sides of the front vertical plate are respectively fixedly connected to the left vertical plate and the front side of the protective panel, the left and right sides of the lower horizontal plate are respectively fixedly connected to the left vertical plate and the lower side of the protective panel, and the lower side of the front vertical plate is fixedly connected to the front side of the lower horizontal plate.

4. The gas line pipe end hole expanding device according to claim 1, characterized in that: The first drill chuck and the second drill chuck are both hand-tight drill chucks; the fixture is a vertical quick fixture; the transverse part of the positioning plate is connected to the fixture's chuck by bolts, and the bolt mounting holes on the fixture's chuck are long strip-shaped through holes in the left and right directions.

5. The gas line pipe end hole expanding device according to claim 1, characterized in that: A right limit block is fixed on the linear guide rail and located on the right side of the sliding block.

6. The gas line pipe end hole expanding device according to claim 5, characterized in that: The left limit block and the right limit block are detachably connected to the linear guide rail.

7. The gas line pipe end hole expanding device according to claim 1, characterized in that: The slide block, the air pipe mounting frame and the hollow shaft are an integrated structure.

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