A new type of drilling and tapping machine

Abstract

This utility model discloses a novel drilling and tapping machine, relating to the field of machine tools. It includes a stand, a tool magazine, and a lifting base with a spindle. When the lifting base slides up and down, the tool magazine can be driven to swing in and out, allowing a designated tool to return from the spindle to the tool magazine or detach from the tool magazine onto the spindle. Several tools are held in place by tool holders on the tool magazine's cutter head. The cutter head is fitted onto a fixed shaft of the tool magazine and driven to rotate by a cutter head motor on its front side. A chip baffle is tightly fitted to the rear side of a connecting seat at the end of the fixed shaft for mounting the cutter head motor. The chip baffle and a sleeve of the cutter head are sleeved together. When the cutter head motor drives the cutter head to rotate, a designated tool can be switched to engage with the spindle. Compared with existing technologies, this design, through the sleeve and chip baffle engagement, supports the cutter head motor, worm gear, and other components driving the cutter head rotation, preventing excessive load on the front end of the fixed shaft and improving the stability of the tool magazine installation.

Description

Technical Field

[0001] This utility model relates to a novel 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. As shown in patent publication number CN219465531U, some existing drilling and tapping machines have the cutter head motor for driving the tool magazine to rotate and change tools located behind the tool magazine. This arrangement makes it difficult to maintain the drive mechanism and causes some inconvenience in actual use. Therefore, the applicant has made some improvements to the existing drilling and tapping machine and has filed the following application. Utility Model Content

[0003] In view of the shortcomings of the prior art, this utility model provides a new type of drilling and tapping machine.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a novel drilling and tapping machine, comprising a frame, a tool magazine, and a lifting base with a spindle. When the lifting base slides up and down, the tool magazine can be driven to swing in and out, and a designated tool can return from the spindle to the tool magazine or detach from the tool magazine to the spindle. Several tools are clamped in the tool magazine's cutter head by tool clips. The cutter head is sleeved on the fixed shaft of the tool magazine and driven to rotate by a cutter head motor on the front side. A chip baffle is tightly fitted on the rear side of the connecting seat for mounting the cutter head motor at the end of the fixed shaft. The chip baffle and the sleeve of the cutter head are sleeved together. The cutter head motor drives the cutter head to rotate, which can switch the designated tool to cooperate with the spindle.

[0005] Preferably, the connecting seat for mounting the cutter head motor is also equipped with a worm gear. The cutter head motor drives the worm gear to rotate through a synchronous pulley and a synchronous belt. The worm gear can cooperate with the rotor fastened to the cutter head to realize the switching of the specified tool in the tool magazine.

[0006] Preferably, the sleeve is fixed to the boss at the center of the cutter head, and the cutter head shaft extending upward from the boss has several ribs on its side that can be used to support and fix the rotor.

[0007] Preferably, the front side of the connecting seat has an outer cover that can form a cavity with the chip baffle to accommodate the cutter head motor and the worm gear, and the outer cover and the chip baffle have a rim and a flange, respectively, so that they form a concave cavity with the cutter cover provided in the cutter magazine.

[0008] Preferably, the connecting arm of the tool magazine for mounting the fixed shaft has a hinge block, which is hinged to the front end of the top seat provided on the top of the stand. The guide plate of the lifting seat fixed to the side can cooperate with the guide wheel provided on the ear of the connecting arm to drive the tool magazine to swing inside and outside when it moves up and down.

[0009] Preferably, at least two guide surfaces are formed on one side of the guide plate, and the guide surface at the lowest point is arranged in a Z-shaped curve. The guide wheel of the connecting arm is in contact with the guide surface of the guide plate so as to be driven by it to swing in and out of the tool magazine.

[0010] Preferably, the support frame has a longitudinally arranged lead screw, and the lifting seat equipped with the main shaft is clamped and fixed to the lead screw by its own clamping ring and the threaded block provided on the lead screw, so that it can be driven by the lead screw to move up and down.

[0011] Preferably, the lead screw motor for driving the lead screw to rotate is mounted on a motor base that is locked to the upright through a wing plate. The motor shaft and the lead screw are respectively inserted into the inner cavity of the motor base and are respectively equipped with a claw plate. The two claw plates that engage with each other together clamp an elastic plum blossom-shaped gasket.

[0012] 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.

[0013] 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.

[0014] This utility model has at least the following advantages:

[0015] 1. By using the sleeve and chip baffle to support the drive mechanism of the cutter head motor, worm gear and other components, the front end of the fixed shaft is not overloaded, thus improving the stability of the tool magazine installation.

[0016] 2. The Z-shaped guide surface of the guide plate can drive the tool magazine to make a large swing motion, which makes it easy to remove the specified tool from the tool holder or reinstall it on the tool holder.

[0017] 3. By connecting the motor shaft and the lead screw with two claw discs and filling the gap between them with elastic shims, the vibration caused to the lead screw during the rotation of the motor shaft can be reduced. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the tool magazine after the outer cover has been removed.

[0020] Figure 3 A schematic diagram of the cutter head drive.

[0021] Figure 4 This is a cross-sectional schematic diagram of the tool magazine.

[0022] Figure 5 yes Figure 4Enlarged diagram of point A in the middle.

[0023] Figure 6 yes Figure 4 Enlarged diagram of point B in the middle.

[0024] Figure 7 This is a schematic diagram of the cutter head.

[0025] Figure 8 A schematic diagram of the lifting platform.

[0026] Figure 9 This is a schematic diagram of the back of the tool magazine.

[0027] Figure 10 This is a schematic diagram of the fit between the guide plate and the guide wheel.

[0028] Figure 11 This is a schematic diagram of the lifting platform's drive mechanism.

[0029] Figure 12 This is a schematic diagram of the engagement of the claw disc.

[0030] Figure 13 This is a diagram illustrating the clamping mechanism of the knife holder.

[0031] In the diagram, 1-Upright frame; 101-Lead screw; 111-Threaded block; 121-Lead screw motor; 131-Motor base; 141-Claw disc; 151-Washer; 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; 20 5-Connecting seat; 215-Cutter head 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-Cutter cover; 3-Cutter; 4-Lifting seat; 401-Fixing ring; 402-Guide plate; 412-Guide surface; 5-Spindle; 501-Spindle motor; 502-Cutter arm; 512-Roller. Detailed Implementation

[0032] 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.

[0033] like Figures 1-13As shown: A novel drilling and tapping machine includes a frame 1, with a top seat 102 fixed to the top of the frame 1. A 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 tool disc 201 circumferentially arranged with several tools 3 elastically clamped by tool clips 204. A tool cover 208 is fixed above the tool clips. The back plate 202 of the tool magazine 2 forms an opening. A vertically movable lifting seat 4 provided 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. A tool 3 located at the opening can detach from the tool magazine 2 and combine with the spindle 5 of the lifting seat 4. The tool 3 can adjust its height up and down via 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.

[0034] Furthermore, the aforementioned tool turret 201 can rotate relative to the tool magazine 2 as a whole to switch the designated tool 3 to the opening for combination with the spindle 5. For example... Figures 2-7 As shown, the tool magazine 2 has a fixed shaft 223 installed on the connecting arm 203. The tool disc 201 is rotatably mounted on the fixed shaft 223 via bearings. 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 to the middle of the connecting seat 205 by means of fasteners. A tool disc 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 tool disc motor 215, the rotor 206 locked on the tool disc 201 can be driven to rotate by its own rollers 216.

[0035] 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 211 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.

[0036] 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, reducing the erosion caused by dust and debris. Simultaneously, the edges of the outer cover 265 and the chip baffle 255 are respectively formed with edging and flanges, and the edging of the outer cover 265 is spaced slightly from the cutter cover 208. Figure 6 As shown, due to the presence of the edging and flange, a large concave cavity is formed between the edge of the chamber and the cutter cover. When inspecting the cutter head motor 215 and related drive components, the hand can more stably grip the edge of the outer cover 265 through the concave cavity, thereby avoiding the impact on other components caused by its own weight when it is removed.

[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] Furthermore, the swinging of the tool magazine 2 is achieved by a guide plate 402 that is laterally fixed to the lifting base 4, as shown above. Figures 8-10 As shown, the guide plate 402 has two guide surfaces 412 formed at the top and bottom. 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 fit against the two guide surfaces 412 of the guide plate 402 and cooperate with them. When the spindle 5 of the lifting platform 4 is combined with the designated tool 3 of the tool magazine 2 and moves downward, the guide wheel 243 first engages with the Z-shaped guide surface 412, allowing the tool magazine 2 to immediately swing outward with a large amplitude so that the tool 3 can disengage from the tool holder 204. During the subsequent movement of the lifting platform 4, the guide wheel 243 engages with the guide surface at the top of the guide plate 402, allowing the tool magazine 2 to only make a small swinging motion to avoid the lifting platform 4. Conversely, when the lifting platform 4 moves upward and needs to return the designated tool 3 combined with its spindle 5 to the tool magazine 2, the guide wheel 243 engages with the Z-shaped guide surface 412, allowing the tool magazine 2 to immediately swing inward with a large amplitude. At this time, the tool holder 204 will be elastically opened by the tool 3 on the spindle 5, thereby clamping the tool 3 back into position.

[0039] Furthermore, the tool holder 204 used to hold the tool 3 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 make it easier for the tool 3 to disengage or return to its original position relative to the tool magazine 2 when the tool magazine 2 swings.

[0040] Furthermore, a lead screw 101 driven to rotate by a lead screw motor 121 is longitudinally arranged in the middle of the above-mentioned upright frame 1. The lead screw 101 is driven to rotate by the lead screw motor 121 located at the top of the upright frame 1. The lifting seat 4 is slidably mounted on the front side of the upright frame 1 via a slider and a guide rail. A fixing ring 401 is integrally formed on its back, and the fixing ring 401 is engaged with a threaded block 111 on the lead screw 101. When the lead screw 101 rotates, the threaded block 111 can drive the lifting seat 4 to move up and down, and drive the tool magazine 2 to make corresponding swinging movements through the guide plate 402.

[0041] Specifically, the lead screw motor 121 is fixed on a motor base 131 with an internal cavity, such as... Figures 11-12 As shown, the wing plates formed on both sides of the motor base 131 are locked to the upright frame 1 by a number of fasteners, thereby fixing the motor base 131 above the upright frame. The motor shaft and lead screw 101 of the lead screw motor 131 pass through the cavity of the motor base 131 from both sides. A claw plate 141 is installed at the end of the motor shaft and the lead screw 101 respectively. The two claw plates 141 can engage to fix the motor shaft and the lead screw 101 to each other. At the same time, the two claw plates 141 also clamp a plum blossom-shaped gasket 151 made of elastic material. The gasket 151 can fill the gap between the claw plates 141. When the motor shaft rotates, it can drive the lead screw 101 to rotate through the claw plates 141. The presence of the gasket 151 can absorb the vibration generated during the rotation of the motor shaft, so that the lead screw 101 can drive the action more smoothly.

[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 novel drilling and tapping machine, comprising a frame (1), a tool magazine (2), and a lifting platform (4) with a spindle (5), wherein when the lifting platform (4) slides up and down, the tool magazine (2) can be driven to swing in and out, and a designated tool (3) can return from the spindle (5) to the tool magazine (2), or detach from the tool magazine (2) to the spindle (5), characterized in that: Several cutting tools (3) are held in place by a tool holder (204) on the tool magazine (2) and the tool magazine (201) is fitted onto the fixed shaft (223) of the tool magazine (2) and driven to rotate by the tool magazine motor (215) on the front side. The connecting seat (205) at the end of the fixed shaft (223) for mounting the tool magazine motor (215) is fitted with a chip baffle (255) on the rear side. The chip baffle (255) is fitted onto the sleeve (207) of the tool magazine (201). The tool magazine motor (215) drives the tool magazine (201) to rotate so that a specified cutting tool (3) can be switched to cooperate with the spindle (5).

2. The novel drilling and tapping machine as described in claim 1, characterized in that: The connecting seat (205) for mounting the cutter head motor (215) is also equipped with a worm gear (225). The cutter head motor (215) drives the worm gear (255) to rotate through a synchronous pulley (235) and a synchronous belt (245). The worm gear (255) can cooperate with the rotor (206) fastened to the cutter head (201) to realize the switching of the designated tool (3) of the tool magazine (2).

3. A novel drilling and tapping machine as described in claim 2, characterized in that: The sleeve (207) is fixed at the boss (211) at the center of the cutter head (201). The cutter head shaft (221) extending upward from the boss (211) has several ribs on its side that can be used to support and fix the rotor (206).

4. A novel drilling and tapping machine as described in claim 2, characterized in that: The front side of the connecting seat (205) is tightly fitted with an outer cover (265) that can form a cavity together with the chip baffle (255) to accommodate the cutter head motor (215) and the worm gear (255). The outer cover (265) and the chip baffle (255) have edging and flange respectively, so that they form a concave cavity with the cutter cover (208) provided in the cutter magazine (2).

5. A novel drilling and tapping machine as described in claim 1, characterized in that: The tool magazine (2) has a hinge block (213) on the connecting arm (203) for mounting the fixed shaft (223). The hinge block (213) is hinged to the front end of the top seat (102) provided on the top of the stand (1). The guide plate (402) of the lifting seat (4) is fixed to the side and can cooperate with the guide wheel (243) provided on the ear (233) of the connecting arm (203) to drive the tool magazine (2) to swing inside and outside when it moves up and down.

6. A novel drilling and tapping machine as described in claim 5, characterized in that: The guide plate (402) has at least two guide surfaces (412) on one side, and the guide surface (412) at the lowest point is arranged in a Z-shaped curve. The guide wheel (243) of the connecting arm (203) is in contact with the guide surface (412) of the guide plate (402) so that it is driven to swing the tool magazine (2) in and out.

7. A novel drilling and tapping machine as described in claim 1, characterized in that: The stand (1) has a longitudinally arranged lead screw (101), and the lifting seat (4) equipped with the main shaft (5) is clamped and fixed with the threaded block (111) of the lead screw (101) through its own clamping ring (401) so that it can be driven up and down by the lead screw (101).

8. A novel drilling and tapping machine as described in claim 7, characterized in that: The lead screw motor (121) used to drive the lead screw (101) to rotate is mounted on the motor base (131) which is locked to the upright frame (1) by the wing plate. The motor shaft and the lead screw (101) are respectively inserted into the inner cavity of the motor base (131) and are respectively equipped with claw discs (141). The two claw discs (141) that are engaged with each other are clamped together with elastic plum blossom-shaped gaskets (151).

9. A novel drilling and tapping machine as described in claim 5, characterized in that: 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).

10. A novel drilling and tapping machine as described in any one of claims 1-9, characterized in that: 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).

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