A tool drive mechanism for a drilling and tapping machine

Abstract

This utility model discloses a tool drive mechanism for a drilling and tapping machine, relating to the field of machine tools. It includes a tool magazine with an opening in the back plate. Several tool holders in the tool magazine are arranged in a ring via a tool disc, with one tool located at the opening in the back plate. A lifting seat, slidably mounted on a stand, is located above the opening in the back plate. A lead screw on the stand drives the lifting seat to move up and down, allowing its spindle to combine or separate from the tool located at the opening. When the lifting seat moves downward, causing the tool magazine to swing, the tool combined with the spindle on the lifting seat can disengage from the tool magazine. After the tool approaches the workpiece via the lifting seat, the spindle motor can drive it to rotate to machine the workpiece. Compared with existing technologies, this design, through the combination of a lead screw motor and a lead screw to drive the lifting seat to move up and down, can achieve high-precision position adjustment of a specified tool within a certain range.

Description

Technical Field

[0001] This utility model relates to a tool driving mechanism, and more particularly to a tool driving mechanism for a drilling and tapping machine, belonging to the field of machine tool technology. Background Technology

[0002] A drilling and tapping machine is a device that integrates cutting, drilling, and tapping functions. When using a drilling and tapping machine to process workpieces, the height of the cutting tool needs to be finely adjusted according to the different conditions of the workpiece to adapt to the current processing requirements. Therefore, the applicant has made some optimizations to the existing drilling and tapping machine and hereby submits the following application. Utility Model Content

[0003] To address the shortcomings of the existing technology, this utility model provides a tool drive mechanism for a drilling and tapping machine.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a tool drive mechanism for a drilling and tapping machine, including a tool magazine with an opening formed in the back plate, a plurality of tools in the tool magazine being arranged in a ring on the tool disc by tool clamps, and one tool being located at the opening of the back plate, a lifting seat slidably mounted on a vertical frame being located above the opening of the back plate, and a lead screw provided on the vertical frame being able to drive the lifting seat to move up and down, so that the spindle can be combined with or separated from the tool located at the opening; when the lifting seat moves down, causing the tool magazine to swing, the tool combined with the spindle can be disengaged from the tool magazine, and after the tool approaches the workpiece, the spindle motor drives it to rotate to process the workpiece.

[0005] Preferably, the lead screw, driven to rotate by the lead screw motor, is longitudinally positioned in the middle of the upright frame, and the lifting seat, which slides on the upright frame, is fixed to the threaded block on the lead screw by its own clamping ring.

[0006] Preferably, the cutter head is rotatably mounted on a fixed shaft provided in the tool magazine, and the connecting seat at the end of the fixed shaft has a cutter head motor for driving the cutter head to rotate.

[0007] Preferably, a sleeve is fixed to the boss formed at the center of the cutter head, and the chip baffle plate fastened to the bottom of the connecting seat is rotatably sleeved with the sleeve.

[0008] Preferably, an outer cover is fixed to the front side of the connecting seat, and the cutter head motor is located in the cavity formed by the outer cover and the chip baffle.

[0009] Preferably, the boss of the cutter head extends upward to form a cutter head shaft, and a rotor that can be driven by the cutter head motor is mounted on several ribs on the side of the cutter head shaft and is locked and fixed to the cutter head by the ribs.

[0010] Preferably, the tool holder elastically clamps the tool using two clamping arms with clamping wheels, so that the tool is fixed on the tool disc.

[0011] Preferably, the tops of the plurality of blade holders arranged around the blade disc are all fixed with a blade cover.

[0012] Preferably, the lifting seat is laterally fixed with a guide plate forming a guide surface, and the tool magazine, which is hinged to the top of the upright, has an ear that can cooperate with the guide surface of the guide plate through a guide wheel, so that it swings accordingly when the lifting seat moves up and down.

[0013] Preferably, the guide plate has at least two guide surfaces, and the guide surface at the lowest point is arranged in a Z-shaped curve.

[0014] Preferably, the top seat of the stand is fixed with a stop block forming an arc surface, and the cutting arm of the spindle can cooperate with the stop block through the roller at its end to clamp or release the specified tool.

[0015] This utility model has at least the following advantages:

[0016] 1. By using a lead screw motor and lead screw to drive the lifting seat to move up and down, high-precision position adjustment of a specified tool can be achieved within a certain range;

[0017] 2. The sleeve and chip baffle plate are fitted together to support the front-end cutter head motor and worm gear, reducing the pressure on the front end of the fixed shaft;

[0018] 3. The guide surface at the lowest point of the guide plate is set with a Z-shaped curve. When the spindle moves down and combines with the tool, the tool magazine can swing at a large amplitude, which facilitates the tool disengagement. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 yes Figure 1 A side view diagram.

[0021] Figure 3 This is a schematic diagram of the lead screw installation.

[0022] Figure 4 This is a structural diagram of the lifting seat.

[0023] Figure 5 This is a schematic diagram of the guide wheel installation.

[0024] Figure 6 This is a schematic diagram of the tool magazine after the outer cover is removed.

[0025] Figure 7 This is a schematic diagram of the cutter head drive.

[0026] Figure 8 This is a cross-sectional schematic diagram of the tool magazine.

[0027] Figure 9 yes Figure 8 Enlarged diagram of point A in the middle.

[0028] Figure 10 This is a schematic diagram of the cutter head.

[0029] Figure 11 This is a diagram illustrating the clamping mechanism of the knife holder.

[0030] In the diagram, 1-Upright frame; 101-Lead screw; 111-Threaded block; 121-Lead screw motor; 102-Top seat; 112-Bump block; 2-Tool magazine; 201-Tool disc; 211-Boss; 221-Tool disc shaft; 202-Back plate; 203-Connecting arm; 213-Hinge block; 223-Fixed shaft; 233-Ear; 243-Guide wheel; 204-Tool holder; 214-Clamping wheel; 205-Connecting seat; 215-Tool Disc motor; 225-worm gear; 235-synchronous pulley; 245-synchronous belt; 255-chip baffle; 265-outer cover; 275-synchronous belt guard; 206-rotor; 216-roller; 207-sleeve; 208-blade cover; 3-tool; 4-lifting seat; 401-clamping ring; 402-guide plate; 412-guide surface; 5-spindle; 501-spindle motor; 502-cutting arm; 512-roller. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figures 1-11 The diagram shows a tool drive mechanism for a drilling and tapping machine, comprising a frame 1 and a tool magazine 2. A top seat 102 is fixed to the top of the frame 1. The tool magazine 2 is hinged to the front end of the top seat 102 via a hinge block 213 on its connecting arm 203. The tool magazine 2 has a cutter disc 201 with several cutters 3 arranged around it, and its back plate 202 forms an opening. A vertically movable lifting seat 4 on the frame 1 is located above the opening of the tool magazine 2. When the lifting seat 4 moves downward, the tool magazine 2 can swing, and a cutter 3 located at the opening can detach from the tool magazine 2 and combine with the spindle 5 of the lifting seat 4. The cutter 3 can adjust its height up and down under the action of the lifting seat 4 to adapt to the current processing requirements of the workpiece, and can perform processing actions by rotating the spindle motor 501.

[0033] Furthermore, the aforementioned lifting seat 4 achieves its sliding function through the combination of a slider and a guide rail provided on the upright frame 1. A lead screw 101 is longitudinally arranged in the middle of the upright frame 1. The lead screw 101 is driven to rotate by a lead screw motor 121 provided at the top of the upright frame 1. A clamping ring 401 is integrally formed on the rear side of the lifting seat 4. The clamping ring 401 is engaged with a threaded block 111 that is threaded with the lead screw 101. Therefore, when the lead screw 101 rotates, the threaded block 111 can drive the lifting seat 4 to move up and down.

[0034] Furthermore, the aforementioned back plate 202 with the opening is fixed to the connecting arm 203 of the tool magazine 2. The connecting arm 203 is equipped with a fixed shaft 223. The tool disc 201 is rotatably mounted on the fixed shaft 223 via bearings. The tool 3 is clamped and fixed on the tool disc 201 by means of several elastically opening and closing tool clips 204 arranged around the tool disc 201. During the processing of the workpiece, the tool disc 201 can rotate according to different processing requirements, so that the designated tool 3 can be switched to the opening so that the main shaft 5 of the aforementioned lifting seat 4 can be combined.

[0035] Specifically, such as Figures 6-8 As shown, a connecting seat 205 is provided at the end of the fixed shaft 223 away from the connecting arm 203. The fixed shaft 223 is locked and fixed to the middle of the connecting seat 205 by means of fasteners. A cutter head motor 215 and a worm gear 225 are respectively installed at both ends of the connecting seat 205. The two are driven by the synchronous pulley 235 and the synchronous belt 245 arranged laterally on the connecting seat 205. When the worm gear 225 is driven to rotate by the cutter head motor 215, the rotor 206 locked on the cutter head 201 can be driven to rotate by its own rollers 216.

[0036] Specifically, a boss 211 is formed at the center of the cutter head 201. The cutter head shaft 221 extending upward from the boss 211 is used to be sleeved and combined with the fixed shaft 223. Several ribs are formed laterally on the cutter head shaft 221. The rotor 206 is locked above the ribs by means of fasteners, thereby achieving mutual fixation with the cutter head 201. Meanwhile, since the connecting seat 205 for mounting the aforementioned cutter head motor 215 and worm gear 225 is locked at the front end of the fixed shaft 223, the front end of the fixed shaft 223 is under a large load, and the entire drive unit is prone to falling. Therefore, a sleeve 207 is also fixedly fitted at the boss 221 at the center of the cutter head 201. The sleeve 207 is fitted with a chip baffle 255 locked behind the connecting seat 205 to prevent machining debris from splashing onto the cutter head 201. If this is done, without affecting the rotation of the tool magazine 2, the sleeve 207 can use the chip baffle 255 to provide auxiliary support to the drive part at the front end of the fixed shaft 223, sharing some of the pressure, thereby reducing the aforementioned risk of falling.

[0037] Specifically, the outer sides of the aforementioned synchronous pulley 235 and synchronous belt 245 are also protected by a synchronous belt cover 275 provided on the side of the connecting seat 205. Of course, the synchronous belt cover 275 also has an avoidance groove on the side near the rotor 206 to avoid interference with the rotor 206.

[0038] Specifically, an outer cover 265 is fixed to the front side of the aforementioned connecting seat 205. The outer cover 265 and the chip baffle 255 together form a chamber to protect the cutter head motor 215 and the worm gear 225, so as to reduce the erosion caused by dust and debris, thereby extending the service life of the equipment.

[0039] Furthermore, the aforementioned tool holder 204 is fixed to the outer edge of the tool disc 201 by its own clamping rod. The two clamping arms hinged by the clamping rod can be elastically opened and closed by the tool holder spring. At the same time, the clamping ends of the two clamping arms also have clamping wheels 214. The clamping wheels 214 are matched with the clamping groove of the tool 3. The reason for using clamping wheels 214 is to facilitate the tool 3 to disengage or return to its original position relative to the tool magazine 2. When the main shaft 5 of the lifting seat 4 moves downward and combines with the designated tool 3, the tool magazine 2 can be driven to swing outward, so that the tool 3 can disengage from the tool holder 204 and be carried by the main shaft 5 to the workpiece below for processing.

[0040] Specifically, a blade cover 208 is also fixed to the top of each blade holder 204 of the blade disc 201.

[0041] Furthermore, the swinging of the tool magazine 2 is achieved by a guide plate 402 fixed laterally to the lifting seat 4. The guide plate 402 has two guide surfaces 412. The guide surface 412 at the lower position is set in a Z-shaped curve, while the guide surface 412 at the higher position is a slope with a lower gradient. The connecting arm 203 of the tool magazine 2 has an ear 233. The guide wheel 243 installed on the ear 233 can cooperate with one side of the guide plate 402 that forms the guide surface 412. When the main shaft 5 of the lifting seat 4 is combined with the designated tool 3 of the tool magazine 2 and moves downward, the guide wheel 243 cooperates with the Z-shaped guide surface 412 to enable the tool magazine 2 to swing at a large amplitude immediately so that the tool 3 can be disengaged from the tool holder 204. During the subsequent movement of the lifting seat 4, the guide wheel 243 cooperates with the guide surface at the higher position of the guide plate 402 so that the tool magazine 2 only swings at a small amplitude to avoid the lifting seat 4.

[0042] Furthermore, the main shaft 5 of the lifting seat 4 is combined and fixed with the designated tool 3 on the tool magazine 2 through its own four-lobed claw structure. The main shaft 5 has a tool-clamping arm 502 that is hinged relative to the lifting seat 4, and the top seat 102 is fixed with a block 112 with an arc surface. The roller 512 at the end of the tool-clamping arm 502 can cooperate with the block 112 to control the main shaft 5 to clamp or release the designated tool 3. Of course, the tool-clamping arm 502 can also be elastically connected to the lifting seat 4 through a tool-clamping arm spring (not shown in the figure) to realize its own reset action (the tool-clamping arm 502 is existing technology, and its specific principle will not be described in detail in this article).

[0043] Furthermore, the fixed installation between the above components can be achieved using various types of screws as fasteners.

[0044] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A tool drive mechanism of a drill and tap machine comprising a back plate (202) formed with an opening of a tool magazine (2), characterized in that: The tool magazine (2) has several tools (3) arranged in a ring on the tool disc (201) by tool holders (204), and one tool (3) is located at the opening of the back plate (202). The lifting seat (4) slidably mounted on the stand (1) is located above the opening of the back plate (202). The lead screw (101) provided on the stand (1) can drive it to move up and down so that the spindle (5) can be combined or separated from the tool (3) located at the opening. When the lifting seat (4) moves down so that the tool magazine (2) swings, the tool (3) combined with the spindle (5) can be disengaged from the tool magazine (2). After the tool (3) approaches the workpiece, the spindle motor (501) drives it to rotate to process the workpiece.

2. A tool drive mechanism for a drill and tap machine as defined in claim 1, wherein: The lead screw (101), driven to rotate by the lead screw motor (121), is longitudinally arranged in the middle of the upright (1). The lifting seat (4), which is slidably mounted on the upright (1), is fixed to the threaded block (111) on the lead screw (101) by its own clamping ring (401).

3. A tool drive mechanism for a drill and tap machine as defined in claim 1 wherein: The cutter head (201) is rotatably mounted on the fixed shaft (223) provided in the tool magazine (2), and the connecting seat (205) provided at the end of the fixed shaft (223) has a cutter head motor (215) for driving the cutter head (201) to rotate.

4. A tool driving mechanism of a drill and tap machine according to claim 3, wherein: The boss (211) formed at the center of the cutter head (201) is fixed with a sleeve (207), and the chip baffle (255) fastened to the bottom of the connecting seat (205) is rotatably sleeved with the sleeve (207).

5. A tool driving mechanism of a drill and tap machine according to claim 4, wherein: The front side of the connecting seat (207) is also fixed with an outer cover (265), and the cutter head motor (215) is located in the cavity formed by the outer cover (265) and the chip baffle (255).

6. A tool driving mechanism of a drill and tap machine according to claim 4, wherein: The boss (211) of the cutter head (201) extends upward to form a cutter head shaft (221). A rotor (206) that can be driven by a cutter head motor (215) is mounted on several ribs on the side of the cutter head shaft (221) and is locked and fixed to the cutter head (201) by the ribs.

7. A tool drive mechanism for a drill and tap machine as defined in claim 1 wherein: The tool holder (204) elastically clamps the tool (3) with its two clamping arms having clamping wheels (214), so that the tool (3) is fixed on the tool disc (201).

8. A tool driving mechanism of a drilling and tapping machine according to any one of claims 1 to 7, characterized in that: The lifting seat (4) is laterally fixed with a guide plate (402) forming a guide surface (412). The tool magazine (2) hinged to the top seat (102) of the upright frame (1) has an ear (233) that can cooperate with the guide surface (412) of the guide plate (402) through a guide wheel (243) so that it swings accordingly when the lifting seat (4) moves up and down.

9. A tool driving mechanism of a drill and tap machine according to claim 8, wherein: The guide plate (402) has at least two guide surfaces (412), and the guide surface (412) at the lowest point is arranged in a Z-shaped curve.

10. The tool drive mechanism of a drill and tap machine according to claim 8, wherein: The top seat (102) of the stand (1) is fixed with a stop block (112) forming an arc surface. The cutter arm (502) of the spindle (5) can cooperate with the stop block (112) through the roller (512) at its end to clamp or release the designated cutter (3).

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