A flat key groove processing numerical control slotting machine driven by a hole type servo electric cylinder

Abstract

This utility model discloses a CNC keyway machining machine driven by a hole-type servo electric cylinder, comprising: a bed, a gantry fixed to the bed, a worktable longitudinally sliding with the bed, a first drive unit for driving the worktable to move, a quick-change fixture positioned on top of the worktable, a tool holder vertically sliding with the gantry, and a second drive unit fixed to the gantry and driving the tool holder to rise and fall. The quick-change fixture has at least one row of positioning slots on its top for positioning parts. The quick-change fixture secures the parts using magnetic attraction or fixing components. A row of tool holders for mounting insert tools is fixed to the tool holder. When the first drive unit drives the worktable and moves the quick-change fixture, each row of positioning slots moves sequentially to below a row of tool holders, corresponding one-to-one with the tool holders. Using this technical solution, multiple parts can be machined simultaneously for keyways, greatly improving the machining efficiency of keyways on blind-hole type parts and increasing production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of flat keyway machining, and in particular to a CNC slotting machine for flat keyway machining driven by a hole-type servo electric cylinder. Background Technology

[0002] In the structural design of mechanical parts, the use of parallel keys is quite common. Parallel keyways on shafts are generally machined using vertical milling cutters, while parallel keyways inside holes are typically machined using wire EDM or broaching. However, when machining parallel keyways on the inner walls of blind-hole parts (shaft supports, flange seats, etc.), it is generally necessary to use a slotting machine. Existing slotting machines can generally only machine the parallel keyway on one part at a time, resulting in low machining efficiency and failing to meet production needs. Therefore, designing a slotting machine that can improve the machining efficiency of parallel keyways on blind-hole parts has become an urgent technical problem to be solved. Utility Model Content

[0003] In order to overcome the existing technical defects, the purpose of this utility model is to provide a CNC slotting machine for machining flat keyways driven by a hole-type servo electric cylinder to solve the above-mentioned technical problems.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0005] According to one aspect of this utility model, a CNC keyway machining machine driven by a hole-type servo electric cylinder is designed, comprising: a bed, a gantry fixed to the bed, a worktable that slides longitudinally with the bed, a first drive unit for driving the worktable to move, a quick-change fixture positioned on the top of the worktable, a tool holder that slides vertically with the gantry, and a second drive unit fixed to the gantry and driving the tool holder to rise and fall. The quick-change fixture has at least one row of positioning slots on its top for positioning and placing parts. The quick-change fixture fixes the parts by magnetic attraction or fixing components. A row of tool holders for mounting insert tools is fixed on the tool holder. When the first drive unit drives the worktable to move the quick-change fixture, each row of positioning slots can move sequentially to below a row of tool holders and correspond one-to-one with the tool holders.

[0006] Using the above technical solution, when a flat keyway needs to be machined on a part, multiple parts are placed in the positioning slots of the quick-change fixture. The positioning slots position the parts, and the quick-change fixture fixes the parts using magnetic attraction or a fixing component. After the parts are fixed, the quick-change fixture is positioned on the worktable. After the equipment is started, the first drive unit drives the worktable to move the quick-change fixture, causing one row of parts to move under a row of tool holders. Then, the second drive unit drives the tool holders to move downwards, and the tool holders move the inserts mounted on them downwards. The inner wall of the part is cut by inserting the tool. Then, the second drive unit drives the tool to move upward by a set distance, the first drive unit drives the worktable to move forward by a set distance, and then the second drive unit drives the tool to move downward again to cut the inner wall of the part. The inner wall of the part is cut multiple times in sequence to process the flat keyway. After the flat keyway on one row of parts is processed, the flat keyway on another row of parts is processed. The tool table moves downward, driving multiple tools to move downward at the same time. This can realize the simultaneous processing of flat keyways on multiple parts. As a result, the processing efficiency of flat keyways on blind hole type parts can be greatly improved, thus improving production efficiency.

[0007] To better address the aforementioned technical deficiencies, this utility model also offers a superior technical solution:

[0008] In some embodiments, positioning posts are provided at the left and right ends of the worktable, and positioning holes that cooperate with the positioning posts are provided on the quick-change tooling.

[0009] In some embodiments, a first guide rail is longitudinally fixed to the bed, the worktable is longitudinally slidably engaged with the first guide rail, a second guide rail is vertically fixed to the gantry, and the tool holder is vertically slidably engaged with the second guide rail.

[0010] In some embodiments, a first mounting base is fixedly connected to the rear side of the bed, the first drive unit is fixedly connected to the first mounting base, and its drive end is fixedly connected to the worktable; a second mounting base is fixedly connected to the front side of the gantry, the second drive unit is fixedly connected to the second mounting base, and its drive end is fixedly connected to the tool holder.

[0011] In some embodiments, the quick-change tooling is provided with three rows of positioning slots on the top, with three positioning slots in each row.

[0012] In some embodiments, both the first drive unit and the second drive unit are orifice-type servo cylinders. An orifice-type servo cylinder integrates a servo motor, bearing housing assembly, and lead screw assembly into a single functional component, greatly simplifying the design structure and facilitating installation.

[0013] In some embodiments, the fixing assembly includes a pressure plate for clamping the fixing part and a locking bolt, the threaded end of the locking bolt passing through a through hole in the pressure plate and threadedly engaging with a threaded hole in the quick-change tooling.

[0014] In some embodiments, the quick-change tooling is a permanent magnet chuck.

[0015] In some embodiments, the fixing component is a locking screw, the threaded end of which passes through a through hole on the part and engages with a threaded hole on a quick-change tooling to fix the part. Attached Figure Description

[0016] Figure 1 A schematic diagram of a CNC keyway machining CNC slotting machine driven by a hole-type servo electric cylinder, according to one embodiment of this utility model;

[0017] Figure 2 A schematic diagram of another perspective of a CNC keyway machining machine driven by a hole-type servo electric cylinder;

[0018] Figure 3 This is a schematic diagram of the main structure of a CNC keyway machining machine driven by a hole-type servo electric cylinder.

[0019] Figure 4 A schematic diagram of the structure after the quick-change tooling is removed from a CNC keyway machining machine driven by a hole-type servo electric cylinder;

[0020] Figure 5 This is a schematic diagram showing the state in which parts are pressed and fixed onto a quick-change tooling for fixing components. In this diagram, the front row of parts does not have flat keyways machined on them.

[0021] Figure label:

[0022] 1. Bed; 2. Gantry frame; 3. Worktable; 31. Positioning column; 4. First drive unit; 5. Quick change tooling; 51. Positioning hole; 52. Positioning slot; 6. Tool post; 61. Tool holder; 62. Tool inserter; 7. Second drive unit; 81. Pressure plate; 82. Locking bolt; D1. First guide rail; D2. Second guide rail; Z1. First mounting base; Z2. Second mounting base; L1. Part. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as setting, installing, connecting, and fixing should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] refer to Figures 1 to 5 As shown, the present invention provides a CNC slotting machine for machining flat keyways driven by a hole-type servo electric cylinder, comprising: a bed 1, a gantry frame 2, a worktable 3, a first drive unit 4, a quick-change tooling 5, a tool post 6, and a second drive unit 7.

[0027] The gantry frame 2 is fixed to the bed 1 by bolts or welding.

[0028] The worktable 3 slides longitudinally with the bed 1. Specifically, two first guide rails D1 are fixedly connected longitudinally on the bed 1, and the slide groove at the bottom of the worktable 3 slides longitudinally with the first guide rails D1, or a slider is fixedly connected to the bottom of the worktable 3, and the slider slides longitudinally with the first guide rails D1.

[0029] The first mounting base Z1 is fixed to the rear side of the bed 1 by screws or welding. The first drive unit 4 is fixed to the first mounting base Z1 by bolts. The drive end of the first drive unit 4 passes through the through hole on the first mounting base Z1 and is fixed to the worktable 3. The first drive unit 4 is used to drive the worktable 3 to move longitudinally. The first drive unit 4 is a hole-type servo electric cylinder.

[0030] The quick-change fixture 5 is positioned on top of the worktable 3. Specifically, positioning posts 31 are respectively provided on the left and right ends of the worktable 3. The quick-change fixture 5 is provided with positioning holes 51 that cooperate with the positioning posts 31. The quick-change fixture 5 is positioned by cooperating with the positioning posts 31 through the positioning holes 51. When the quick-change fixture 5 is relatively heavy, it does not need to be fixed after being placed on the worktable 3. When the quick-change fixture 5 is relatively light, it needs to be fixed after being placed on the worktable 3. The fixing methods are: bolts pass through the through holes on the quick-change fixture 5 and lock into the threaded holes on the worktable 3, or the worktable 3 is a permanent magnet chuck, and the quick-change fixture 5 is fixed by magnetic attraction. Of course, in this case, the quick-change fixture 5 is made of a magnetically attractive material, such as iron or other iron-containing materials.

[0031] The quick-change tooling 5 has one, two, three or more rows of positioning slots 52 on its top for positioning and placing parts. In this embodiment, the quick-change tooling 5 preferably has three rows of positioning slots 52 on its top, with each row having two, three, four or more positioning slots 52. In this embodiment, the number of positioning slots 52 in each row is preferably three.

[0032] The quick-change fixture 5 uses magnetism or a fixing component to fix the part. When the quick-change fixture 5 fixes the part magnetically, it is a permanent magnet chuck, which uses magnetic attraction to fix the part. When the quick-change fixture 5 fixes the part using a fixing component, the fixing component includes a pressure plate 81 and locking bolts 82. There are two pressure plates 81, and each pressure plate 81 is fitted with two locking bolts 82. The threaded end of the locking bolt 82 passes through a through hole on the pressure plate 81 and engages with a threaded hole on the quick-change fixture 5 to fix the part L1. In other embodiments, the fixing component is a locking screw, and the threaded end of the locking screw passes through a through hole on the part and engages with a threaded hole on the quick-change fixture 5 to fix the part.

[0033] The tool holder 6 and the gantry 2 are vertically slidably engaged. Specifically, two second guide rails D2 are vertically fixed on the gantry 2, and the slide groove on the rear side of the tool holder 6 is vertically slidably engaged with the second guide rails D2. Alternatively, a slider is fixed on the rear side of the tool holder 6, and the slider is vertically slidably engaged with the second guide rails D2.

[0034] The front side of the gantry 2 is fixed with a second mounting base Z2 by screws or welding. The second drive unit 7 is fixed to the second mounting base Z2 by bolts. The drive end of the second drive unit 7 passes through the through hole on the second mounting base Z2 and is fixed to the tool holder 6. The first drive unit 4 is used to drive the tool holder 6 to move up and down. The second drive unit 7 is a hole-type servo electric cylinder.

[0035] A row of tool holders 61 is fixedly connected to the tool holder 6. The number of tool holders 61 in the row is the same as the number of positioning slots 52 in the row. The tool holders 61 are used to install insert tools 62. When the first drive unit 4 drives the worktable 3 to move the quick change tooling 5, each row of positioning slots 52 can move sequentially to the bottom of a row of tool holders 61 and correspond one-to-one with the tool holders 61.

[0036] It also includes a control device, which is an industrial computer, a PLC controller or other control device. The first drive unit and the second drive unit are electrically connected to the control device, and the control device controls the start and stop of the first drive unit and the second drive unit respectively.

[0037] When a flat keyway needs to be machined on part L1, multiple parts L1 are placed in the positioning slots 52 of the quick-change fixture 5. The quick-change fixture 5 fixes the parts by magnetic attraction or a fixing component. After the parts are fixed, the quick-change fixture 5 is positioned on the worktable 3. After the equipment is started, the first drive unit 4 drives the worktable 3 to move. The movement of the worktable 3 drives the quick-change fixture 5 to move, so that one row of parts moves under a row of tool holders 61. Then, the second drive unit 7 drives the tool holders 6 to move down. The movement of the tool holders 6 drives the tool holders 61 to move down. The tool holders 61 move the tool holders mounted on them. The inserter 62 moves downward to insert and cut the inner wall of the part. After one cut, the second drive unit 7 drives the inserter 62 to move upward a set distance, and the first drive unit 4 drives the worktable 3 to move forward a set distance. Then, the second drive unit 7 drives the inserter 62 to move downward again to cut the inner wall of the part. The inner wall of the part is cut multiple times in sequence to process the flat keyway. After the flat keyway on one row of parts is processed, the flat keyway on another row of parts is processed. This can greatly improve the processing efficiency of flat keyways on blind hole type parts. Of course, this inserter can also be used to process flat keyways on non-blind hole type parts.

[0038] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A CNC slotting machine for machining flat keyways driven by a hole-type servo electric cylinder, characterized in that, include: The machine includes a bed, a gantry frame fixed to the bed, a worktable that slides longitudinally with the bed, a first drive unit that drives the worktable to move, a quick-change fixture positioned on top of the worktable, a tool holder that slides vertically with the gantry frame, and a second drive unit fixed to the gantry frame and driving the tool holder to rise and fall. The quick-change fixture has at least one row of positioning slots on its top for positioning and placing parts. The quick-change fixture fixes the parts by magnetic attraction or fixing components. A row of tool holders for mounting insert tools is fixed on the tool holder. When the first drive unit drives the worktable and moves the quick-change fixture, each row of positioning slots can move sequentially to below a row of tool holders and correspond one-to-one with the tool holders.

2. The CNC slotting machine for machining flat keyways driven by a hole-type servo electric cylinder according to claim 1, characterized in that, The workbench is provided with positioning posts at its left and right ends respectively, and the quick-change tooling is provided with positioning holes that cooperate with the positioning posts.

3. A CNC slotting machine for machining flat keyways driven by a hole-type servo electric cylinder according to claim 1 or 2, characterized in that, The machine bed is longitudinally fixed with a first guide rail, the worktable is longitudinally slidably engaged with the first guide rail, the gantry is vertically fixed with a second guide rail, and the tool holder is vertically slidably engaged with the second guide rail.

4. A CNC slotting machine for machining flat keyways driven by a hole-type servo electric cylinder according to claim 1, characterized in that, A first mounting base is fixedly connected to the rear side of the bed, the first drive unit is fixedly connected to the first mounting base, and its drive end is fixedly connected to the worktable. A second mounting base is fixedly connected to the front side of the gantry, the second drive unit is fixedly connected to the second mounting base, and its drive end is fixedly connected to the tool holder.

5. A CNC slotting machine for machining flat keyways driven by a hole-type servo electric cylinder according to claim 1, characterized in that, The quick-change tooling is provided with three rows of positioning slots on the top, with three positioning slots in each row.

6. A CNC slotting machine for machining flat keyways driven by a hole-type servo electric cylinder according to claim 1, characterized in that, Both the first drive unit and the second drive unit are orifice-type servo electric cylinders.

7. A CNC slotting machine for machining flat keyways driven by a hole-type servo electric cylinder according to claim 1, characterized in that, The fixing assembly includes a pressure plate for clamping the fixing parts and a locking bolt. The threaded end of the locking bolt passes through a through hole on the pressure plate and engages with a threaded hole on the quick-change tooling.

8. A CNC slotting machine for machining flat keyways driven by a hole-type servo electric cylinder according to claim 1, characterized in that, The quick-change tooling is a permanent magnet chuck.

9. A CNC slotting machine for machining flat keyways driven by a hole-type servo electric cylinder according to claim 1, characterized in that, The fixing component is a locking screw, the threaded end of which passes through the through hole on the part and engages with the threaded hole on the quick-change tooling to fix the part.

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