A multi-station processing device for power tool housings

Abstract

This invention discloses a multi-station machining device for power tool housings, relating to the field of machine tool machining technology. It has the advantage of improving the machining efficiency of multiple smooth holes and threaded connection holes on the housing. The key technical points are: a machine base; a fixture for positioning and clamping the housing on a support member; a first machining unit and a loading / unloading station at a first position, the first machining unit being used to drill holes in the upper end face of the housing, and opposite first and second end faces; a second machining unit at a second position, the second machining unit tapping the drilled holes; a drilling and tapping combined power head being used to simultaneously drill and tap the third end face of the housing; and a switching mechanism within the first position, connected to the fixture, for driving the fixture to move between the loading / unloading station and the first machining unit position.

Description

Technical Field

[0001] This invention relates to the field of machine tool processing technology, specifically to a multi-station processing device for power tool housings. Background Technology

[0002] The housing of power tools (such as angle grinders) is a crucial component, not only housing internal core parts like the motor and transmission mechanism, but also directly affecting the operator's feel and safety. These housings are typically made of die-cast aluminum alloy or injection-molded engineering plastics.

[0003] like Figure 12-14 The diagram shows the structure of the angle grinder housing. Numerous open holes 25 and threaded connection holes 26 (such as handle fixing holes, cover mounting holes, and motor base positioning holes) on the housing need to be machined.

[0004] Generally, bench drills and tapping machines are used in conjunction with specialized fixtures for single-hole or single-process operations. The workpiece needs to be clamped and positioned multiple times, resulting in numerous turnover processes, low production efficiency, and the accumulation of human error leading to poor product consistency, making it difficult to meet the needs of mass production. Summary of the Invention

[0005] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a multi-station machining device for power tool housings, which has the advantage of improving the machining efficiency of multiple smooth holes and threaded connection holes on the housing.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This invention provides a multi-station machining device for power tool housings, including a base;

[0008] A carrier is reciprocally mounted on the base, and the carrier is provided with a clamp for positioning and clamping the housing;

[0009] The machine base is set at a first position, where a first processing unit and a loading and unloading station are provided. The first processing unit includes multiple drilling power heads, which are respectively used to drill holes in the upper end face of the housing, the opposite first end face and the second end face.

[0010] The machine base is located at a second position, where a second processing unit is provided. The second processing unit includes multiple tapping power heads and a drilling and tapping combined power head. The tapping power heads are used to tap holes that have been drilled, and the drilling and tapping combined power head is used to simultaneously drill and tap the third end face of the housing.

[0011] A drive mechanism, which is connected to the carrier component, is used to drive the carrier component to reciprocate between the first position and the second position;

[0012] A switching mechanism is provided in the first position and connected to the fixture to drive the fixture to move between the loading / unloading station and the first processing unit position.

[0013] By adopting the above technical solution, the operator is located at the loading and unloading station in the first position, and installs the shell to be processed onto the fixture to complete the positioning and clamping. After clamping, the switching mechanism is started. The switching mechanism drives the fixture and the shell on it to move from the loading and unloading station to the processing station of the first processing unit in the first position, that is, to align with multiple drilling power heads. When the shell reaches the first processing unit station, the multiple drilling power heads move simultaneously to drill holes in the upper end face, the first end face and the second end face of the shell respectively.

[0014] After the drilling process at the first position is completed, the drive mechanism is started. The drive mechanism is connected to the carrier component and drives the carrier component to move from the first position to the second position. After the carrier component reaches the second position, the second processing unit is started. Multiple tapping power heads tap the holes drilled in the previous process. At the same time, the drilling and tapping power head performs drilling and tapping on the third end face of the housing respectively. The drilling and tapping processes are completed in one feed.

[0015] After all the processing in the second position is completed, the drive mechanism starts again, and the drive carrier returns to the first position with the processed housing.

[0016] At this time, the shell returns to the first processing unit station in the first position, the switching mechanism starts again, pulls the fixture back from the first processing unit station to the loading and unloading station, the operator unloads the processed shell and loads the next shell blank to be processed, and the next cycle begins;

[0017] By setting two positions on the machine base, and arranging drilling and tapping units at the first and second positions respectively, the housing can automatically complete two different machining processes—drilling and tapping—in a single clamping operation. This reduces the workpiece transfer time between different machine tools. The first machining unit is equipped with multiple drilling power heads, corresponding to the upper end face, the first end face, and the second end face. Drilling operations on these three faces are performed simultaneously, shortening the drilling time for a single housing piece. For the third end face of the housing, a combined drilling and tapping power head is set up, simultaneously fulfilling the tapping and drilling requirements for different holes. Therefore, it improves the efficiency of multiple smooth holes and threaded connection holes on the housing. The processing efficiency is improved, and the processing cost of a single shell is reduced. By setting a switching mechanism inside the first position, the loading and unloading station is spatially separated from the first processing unit. This has the following advantages: when loading and unloading, the operator's hands are kept away from the working drilling head, which improves the operator's operational safety. The drive mechanism drives the carrier to move back and forth, and with the precise movement of the switching mechanism within the station, the entire device realizes fully automatic processing from shell blank to finished product. Moreover, since the workpiece completes all processing in one clamping, the positional tolerance between each processing surface is easier to guarantee, resulting in high stability and consistency of the smooth holes and threaded connection holes of the processed shell.

[0018] Preferably, the support member includes a base plate;

[0019] The clamp includes a vertical plate that abuts against the third end face, a clamping plate that presses the shell onto the vertical plate, a power component that drives the clamping plate to move, a support rod that is set on the vertical plate via a connecting rod and supports the lower end face of the shell, and a limiting block that is set on the vertical plate and located on both sides of the upper end of the shell and distributed in cooperation with the outer wall of the shell. After the shell is fixed by the clamp, there is a gap between the lower end of the shell and the bottom plate.

[0020] The vertical plate moves toward the pressing plate on the base plate. When the switching mechanism and the power component work together to move the pressing plate away from the vertical plate, the vertical plate and the housing move together out of the first processing unit position and to the loading and unloading station. During this process, the housing is still clamped by the pressing plate and the vertical plate. After moving to the loading and unloading station, the switching mechanism works with the power component to separate the pressing plate from the outer wall of the housing.

[0021] Preferably, the power component includes a mounting plate disposed on the base plate, two oppositely distributed slide rails disposed on the upper surface of the mounting plate, and an electric cylinder disposed on the mounting plate and driving the pressing plate to move on the slide rails. The lower end of the pressing plate is slidably connected to the slide rails via a slider.

[0022] Preferably, the switching mechanism includes a telescopic rod disposed on the surface of the vertical plate, a driving plate connected to one end of the telescopic rod on the clamping plate, the driving plate being located on one side of the mounting plate, an elastic element inside the telescopic rod to keep the telescopic rod in a stretched state, and an entry groove for the support rod to enter on the mounting plate. When the vertical plate abuts against one end of the mounting plate, the clamping plate separates from the outer wall of the housing, and the housing is in a detachable state. When the vertical plate is not abutting against one end of the mounting plate, the elastic element causes the vertical plate to move with the movement of the clamping plate, so that the housing remains clamped during the movement.

[0023] Preferably, there are two telescopic rods symmetrically arranged on both sides of the housing on the vertical plate, and there are two driving plates, each corresponding to the position of one of the two telescopic rods.

[0024] Preferably, the telescopic rod includes a sleeve and an inner rod inserted into the sleeve, and the elastic element is a tension spring disposed between the sleeve and the inner rod.

[0025] Preferably, the drive mechanism includes a support plate mounted on a base and extending along the direction from the first position to the second position. The base plate is slidably connected to the support plate via a guide rail. The support plate is provided with a motor lead screw assembly that causes the base plate to reciprocate.

[0026] Preferably, it further includes a limiting member for limiting the movement of the base plate to the first position and the second position;

[0027] The limiting member includes a first stop block disposed on the support plate, which abuts against one side of the base plate to limit the first position;

[0028] A second stop is provided on the support plate to abut against the other side of the base plate to define a second position. A first pressure sensor is provided on both the first and second stopes.

[0029] When the base plate moves to the first position, one side of the base plate abuts against the first stop, and the first pressure sensor on the first stop collects the first rated pressure value and sends a signal to control the motor screw drive mechanism to stop working; when the base plate moves to the second position, the other side of the base plate abuts against the second stop, and the first pressure sensor on the second stop collects the second rated pressure value and sends a signal to control the motor screw drive mechanism to stop working.

[0030] Preferably, the support member further includes a first positioning plate disposed on one side of the base plate;

[0031] When the vertical plate abuts against one end of the mounting plate, the clamping plate separates from the outer wall of the housing, and the housing is in a detachable state, that is, the housing is in the loading and unloading position. When the housing to be processed is placed between the clamping plate and the vertical plate, the power component drives the clamping plate to move towards the vertical plate. The vertical plate remains stationary under the tension of the elastic component until the clamping plate presses the housing to be processed onto the vertical plate. At this time, the clamping of the housing is completed. Then, the clamping plate drives the vertical plate to move together towards the first positioning plate until one side of the vertical plate abuts against the first positioning plate. At this time, the housing moves to the position of the first processing unit.

[0032] Preferably, the first positioning plate is provided with a second pressure sensor. When the vertical plate abuts against the first positioning plate, the second pressure sensor collects a third rated pressure value and sends a signal to control the electric cylinder to stop working.

[0033] The beneficial effects of this invention are as follows:

[0034] 1. By setting two positions on the machine base and arranging drilling and tapping units at the first and second positions respectively, the housing can automatically complete two different types of processing operations, drilling and tapping, after one clamping, reducing the transfer time of the workpiece between different machine tools. The first processing unit is equipped with multiple drilling power heads, corresponding to the upper end face, the first end face, and the second end face respectively. The drilling operations on these three faces are carried out simultaneously, shortening the drilling processing time of a single housing. For the third end face of the housing, a combined drilling and tapping power head is set up to simultaneously meet the tapping and drilling requirements of different holes. Therefore, the processing efficiency of multiple smooth holes and threaded connection holes on the housing is improved, and the processing cost of a single housing is reduced.

[0035] 2. By setting a switching mechanism inside the first position, the loading and unloading station is spatially separated from the first processing unit. The advantages of this are: when loading and unloading, the operator's hands are kept away from the working drilling power head, which improves the operator's safety; in addition, the power unit not only has the function of clamping and positioning the housing, but also realizes the switching of the housing from the first processing unit position to the loading and unloading station, as well as the automatic unloading after arriving at the loading and unloading station.

[0036] 3. The drive mechanism drives the carrier to move back and forth, and together with the switching mechanism, it moves precisely within the workstation. The entire device realizes fully automatic processing from shell blank to finished product. Since the workpiece completes all processing in one clamping, the positional tolerance between each processing surface is easier to guarantee, resulting in high dimensional stability and consistency of the processed shell.

[0037] The movement of the base plate between the first and second positions is precisely controlled by the limiting component and the first pressure sensor.

[0038] The movement of the fixture between the loading / unloading station and the first processing unit is precisely controlled by the first positioning plate and the second pressure sensor.

[0039] 4. The clamping plate is not just a simple clamping element. It works ingeniously with the vertical plate, switching mechanism and power components to achieve the purpose of clamping, transfer, precise positioning and automatic release. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0042] Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle;

[0043] Figure 3 This is a structural diagram illustrating the first and second positions in this embodiment;

[0044] Figure 4 This is a schematic diagram illustrating the structure of the tapping power head in this embodiment;

[0045] Figure 5 This is a schematic diagram illustrating the structure of the support plate without the bellows-style protective cover installed in this embodiment;

[0046] Figure 6 for Figure 5 Enlarged structural diagram of section B in the middle;

[0047] Figure 7 This is a schematic diagram illustrating the structure of the base plate in this embodiment;

[0048] Figure 8 This is a schematic diagram illustrating the structure of the telescopic rod in this embodiment;

[0049] Figure 9 This is a schematic diagram illustrating the structure of the extension plate in this embodiment;

[0050] Figure 10 This is a schematic diagram illustrating the structure of the through hole in this embodiment;

[0051] Figure 11 This is a structural schematic diagram illustrating the fastener in this embodiment;

[0052] Figure 12 This is a schematic diagram illustrating the structure of the finished shell.

[0053] Figure 13 This is a structural schematic diagram illustrating the third end face of the machined shell;

[0054] Figure 14 This is a schematic diagram illustrating the structure of the finished shell.

[0055] Explanation of reference numerals in the attached figures:

[0056] In the diagram: 1. Base; 11. Splash guard; 12. Drilling power head; 13. Tapping power head; 14. Combined drilling and tapping power head; 15. Storage box; 151. Connecting pipe; 16. Column; 161. Fixed arm; 162. Horizontal plate; 163. Horizontal slide; 164. Vertical plate; 165. Vertical slide; 166. Dovetail block; 167. Drive plate; 168. Threaded rod; 169. Clamping block; 17. Base plate; 171. Vertical plate; 172. Groove; 173. Pressing plate; 174. Connecting rod; 1741. Support rod; 1742. Limiting block; 175. Through hole; 176. Mounting plate; 1761. Slide rail; 1762. Electric cylinder; 1763. Slider; 177. Extension plate; 178. Reinforcing rib plate; 1781. Arc groove; 179. Drive plate; 1791. Sleeve; 1792. Inner rod; 1793. Tension spring; 18. Entry groove; 19. Support plate; 191. Guide rail; 192. First plate; 193. Lead screw; 194. Motor; 195. Bellows-style protective cover; 196. Second stop block; 197. First positioning plate; 2. Housing; 21. Upper end face of housing; 22. First end face; 23. Second end face; 24. Third end face; 25. Smooth hole; 26. Threaded connection hole. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] A multi-station machining device for power tool housings, such as Figure 1-6 and Figure 12-14 The machine includes a base 1, and a splash guard 11 is provided around the upper periphery of the base 1. The splash guard 11 is a surrounding plate structure arranged circumferentially around the upper surface of the base 1, which is used to block and store the coolant splashed during the processing.

[0059] The carrier is reciprocally mounted on the base 1, and the carrier is provided with a clamp for positioning and clamping the housing 2;

[0060] The machine is positioned at a first location on the base 1. This first location includes a first processing unit and a loading / unloading station. The first processing unit comprises three drilling power heads 12, used to drill holes in the upper end face 21 of the housing, the opposing first end face 22, and the second end face 23. Based on the holes in the housing 2, it can be seen that the drilling power head 12 for drilling the upper end face 21 has four drill bits installed. The drill bits for drilling the upper end face 21 remove chips while drilling, and the drilling depth is not deep; for example, the depth of the four drill holes in the upper end face 21 is 14.5 mm. The waste chips generated by the hole will not affect subsequent tapping; a drill bit is installed on the drilling power head 12 that performs drilling on the first end face 22 and the second end face 23. The drilling power head 12 is a power component that integrates the functions of rotation and feed motion, so that when the housing 2 moves to the first processing unit, each drilling power head 12 performs drilling on each end face of the housing 2; the main motion of the drilling power head 12 is driven by a three-phase asynchronous motor 194; the first position is when the housing 2 is located directly below the drilling power head 12 that is processing the upper end face 21 of the housing;

[0061] A second processing unit is located at the second position of the machine base 1. This second processing unit includes three tapping power heads 13 and one drilling-tapping combined power head 14. The tapping power heads 13 are used to tap holes that have already been drilled. The drilling-tapping combined power head 14 is used to simultaneously drill and tap the third end face 24 of the housing 2. The drilling-tapping combined power head 14 is a power head equipped with a drill bit corresponding to the drilling position on the third end face 24 and a tap for the tapped hole. The tapping hole is inherent to the shell 2 blank; the tapping power head 13 is a power head with a tap corresponding to the hole drilled in the first position of the shell 2; the loading and unloading station is located on the side of the first processing unit away from the second position; the main motion of the tapping power head 13 is driven by the servo motor 194; the second position is the shell 2 located directly below the tapping power head 13 on the upper end face 21 of the processed shell; the blank hole 25 is the hole that was not tapped after drilling. After the shell 2 is processed, only the four corner points of the third end face 24 are blank holes 25;

[0062] A drive mechanism, which is connected to the carrier component in a transmission manner, is used to drive the carrier component to reciprocate between a first position and a second position;

[0063] A switching mechanism is provided in the first position and connected to the fixture, which is used to drive the fixture to move between the loading and unloading station and the first processing unit position;

[0064] The coolant circulation system includes a connecting pipe 151 connected to the upper surface of the base 1 and a storage tank 15 located inside the base 1 for storing coolant. The storage tank 15 is equipped with a filter screen (not shown in the figure) that divides the storage tank 15 into two independent spaces, upper and lower. The connecting pipe 151 is connected to the upper space of the storage tank 15, that is, above the filter screen. The connecting pipe 151 guides the coolant stored on the upper surface of the base 1 into the storage tank 15 and filters it through the filter screen to the lower space. Each power head is equipped with a coolant nozzle and a hose connected to the nozzle (not shown in the figure). The storage tank 15 is equipped with a main pipe (not shown in the figure) that pumps the filtered coolant from the lower space into each hose. A pump (not shown in the figure) is installed on the main pipe to draw the coolant from the storage tank 15 into the main pipe and then into each hose; thereby enabling the coolant to cool the housing 2 in a timely manner when each power head is working.

[0065] like Figure 1-6 The processing areas of the first processing unit and the second processing unit are located directly above or inside the coolant. Specifically, the drilling head 12 and the tapping head 13 of the upper end face 21 of the processing housing are fixed by the column 16 set on the upper end face of the base 1. There are two columns 16, and the upper ends of the two columns 16 are fixedly connected to the fixing arms 161. The drilling head 12 and the tapping head 13 of the upper end face 21 of the processing housing are respectively fixed on the fixing arms 161 on the two columns 16. The drilling head 12 and the tapping head 13 of the upper end face 21 of the processing housing are vertically downward.

[0066] like Figure 1-6 and Figure 11 In addition to the drilling power head 12 and tapping power head 13 on the upper end face 21 of the machining housing, the other drilling power head 12, tapping power head 13 and drilling-tapping combined power head 14 on the upper end face of the base 1 are all fixed by fasteners. The fasteners are used to fix and adjust the position of each power head and to lift each power head away from the coolant layer at the upper end of the base 1.

[0067] like Figure 1-6 and Figure 11The fixing components include a horizontal plate 162 disposed on the upper end face of the base 1 and a horizontal slide block 163 horizontally slidably connected to the upper end of the horizontal plate 162. A vertical plate 164 is disposed on the upper end of the horizontal slide block 163, and a vertical slide block 165 is vertically slidably connected to the vertical plate 164. The power head is fixed to the slide block. Both the horizontal plate 162 and the vertical plate 164 are provided with components that allow the horizontal slide block 163 and the vertical slide block 165 to move. These components are dovetail blocks 166 respectively disposed on the horizontal plate 162 and the vertical plate 164, with the dovetail blocks 166 distributed along the long sides of the horizontal plate 162 and the vertical plate 164. Both the horizontal slide block 163 and the vertical slide block 165 are provided with dovetail grooves that slide on the dovetail blocks 166. A drive plate 167 is disposed on one side of the horizontal plate 162 and on the upper end of the vertical plate 164. One end of the movable plate 167 extends to one side of the horizontal slide 163 or the vertical slide 165, and a threaded rod 168 is threadedly connected to that side. Both ends of the threaded rod 168 extend out of the drive plate 167, and one end is rotatably connected to the horizontal slide 163 or the vertical slide 165. The end of the threaded rod 168 away from the horizontal slide 163 or the vertical slide 165 is threadedly connected to a locking block 169 that abuts against the surface of the drive plate 167. When the position of the power head needs to be adjusted, simply rotate the threaded rod 168. At this time, the locking block 169 is distributed away from the surface of the drive plate 167. After the adjustment is in place, rotate the locking block 169 until the locking block 169 abuts against the surface of the drive plate 167, thereby restricting the position of the horizontal slide 163 and the vertical slide 165 and stabilizing the position of the power head.

[0068] like Figure 1-6 The operator is located at the loading and unloading station in the first position. The shell 2 to be processed is installed on the fixture and positioned and clamped. After clamping, the switching mechanism is started. The switching mechanism drives the fixture and the shell 2 on it to move from the loading and unloading station to the processing station of the first processing unit, that is, to align with the three drilling power heads 12. When the shell 2 reaches the first processing unit station, the three drilling power heads 12 move simultaneously to drill holes in the upper end face 21, the first end face 22 and the second end face 23 of the shell respectively.

[0069] like Figure 1-6 After the drilling process at the first position is completed, the drive mechanism is started. The drive mechanism is connected to the carrier component and drives the carrier component to move from the first position to the second position. After the carrier component reaches the second position, the second processing unit is started. The three tapping power heads 13 tap the holes drilled in the previous process. At the same time, the drilling and tapping combined power head 14 drills and taps the third end face 24 of the housing 2 respectively. The drilling and tapping processes are completed in one feed.

[0070] After all the processing in the second position is completed, the drive mechanism is started again, and the drive carrier returns to the first position with the processed housing 2.

[0071] At this time, the housing 2 returns to the first processing unit station in the first position, the switching mechanism starts again, pulls the fixture back from the first processing unit station to the loading and unloading station, the operator unloads the processed housing 2, and loads the next housing 2 blank to be processed, and starts the next cycle.

[0072] like Figure 1-6 By setting two positions on the machine base 1, and arranging drilling and tapping units at the first and second positions respectively, the housing 2 can automatically complete two different processing steps of drilling and tapping after one clamping, reducing the transfer time of the workpiece between different machine tools. The first processing unit is equipped with three drilling power heads 12, corresponding to the upper end face, the first end face 22, and the second end face 23 respectively. The drilling operations on these three faces are carried out simultaneously, shortening the drilling processing time of a single housing 2. For the third end face 24 of the housing 2, a drilling and tapping combined power head 14 is set up, which simultaneously realizes the tapping and drilling requirements of different holes, thus improving the multiple smooth holes 25 and threads on the housing 2. The processing efficiency of the connecting hole 26 is improved, and the processing cost of a single housing 2 is reduced. By setting a switching mechanism inside the first position, the loading and unloading station is spatially separated from the first processing unit. This has the following advantages: when loading and unloading, the operator's hands are kept away from the working drilling head 12, which improves the operator's operational safety. The drive mechanism drives the carrier to move back and forth, and with the precise movement of the switching mechanism in the station, the entire device realizes fully automatic processing from the housing 2 blank to the finished product. Since the workpiece completes all processing in one clamping, the positional tolerance between each processing surface is easier to guarantee, resulting in high stability and consistency of the finished housing 2's smooth hole 25 and threaded connecting hole 26.

[0073] like Figure 2 and Figure 7-10The supporting component includes a base plate 17, with a groove 172 on the upper surface of the base plate 17 to facilitate the outflow of coolant. The clamp includes a vertical plate 171 that abuts against the third end face 24, a clamping plate 173 that presses the housing 2 against the vertical plate 171, a power component that drives the clamping plate 173 to move, a support rod 1741 that is mounted on the vertical plate 171 via a connecting rod 174 and supports the lower end face of the housing 2, and limiting blocks 1742 that are mounted on the vertical plate 171 and located on both sides of the upper end of the housing 2 and are distributed in cooperation with the outer wall of the housing 2. After the housing 2 is fixed by the clamp, there is a gap between the lower end of the housing 2 and the base plate 17. During installation, the operator places the housing 2 between the vertical plate 171 and the clamping plate 173, and contacts the two ends of the upper end of the housing 2 with the two limiting blocks 1742 respectively. At this time, the lower end of the housing 2 contacts the upper end of the support rod 1741. Then, the power component drives the clamping plate 173 to move, thereby pressing the housing 2 onto the vertical plate 171, realizing the clamping and positioning of the housing 2. At this time, the upper end face 21 of the housing is horizontally upward, and the third end face 24 is close to the vertical plate 171. The vertical plate 171 has through holes 175 for the drill bit and tap of the drilling and tapping power head 14 to pass through.

[0074] like Figure 2 and Figure 7-10 The vertical plate 171 can move towards or away from the clamping plate 173 on the base plate 17. When the switching mechanism and the power component work together to move the clamping plate 173 away from the vertical plate 171, the vertical plate 171 and the housing 2 are moved out of the first processing unit position and moved to the loading and unloading station. During this process, the housing 2 is still clamped by the clamping plate 173 and the vertical plate 171. After moving to the loading and unloading station, the switching mechanism works with the power component to separate the clamping plate 173 from the outer wall of the housing 2. This allows the power component to not only clamp and position the housing 2, but also to switch the housing 2 from the first processing unit position to the loading and unloading station.

[0075] like Figure 2 and Figure 7-10 The power components include a mounting plate 176 mounted on the base plate 17, two opposing slide rails 1761 mounted on the upper surface of the mounting plate 176, and an electric cylinder 1762 mounted on the mounting plate 176 and driving the pressing plate 173 to move on the slide rails 1761. At this time, the length direction of the slide rails 1761 is distributed along the length direction of the mounting plate 176, and the length direction of the mounting plate 176 is distributed along the length direction of the base plate 17. The lower end of the pressing plate 173 is slidably connected to the slide rails 1761 through the slider 1763. At this time, the piston rod of the electric cylinder 1762 is connected to one side of the pressing plate 173, so that the electric cylinder 1762 drives the pressing plate 173 to reciprocate along the length direction of the slide rails 1761. The electric cylinder 1762 is located on the side of the slide rails 1761 away from the vertical plate 171.

[0076] like Figure 7-10 The lower end of the vertical plate 171 is provided with a horizontally distributed extension plate 177. The extension plate 177 is located below the housing 2. Since there is a gap between the lower end of the housing 2 and the bottom plate 17 after the housing 2 is fixed by the clamp, this gap facilitates the setting of the extension plate 177. Both sides of the vertical plate 171 are provided with reinforcing ribs 178. At this time, the two reinforcing ribs 178 are located on both sides of the housing 2. The reinforcing ribs 178 are right-angled triangular plates. One right-angled side of the reinforcing ribs 178 extends to the bottom plate 17, and the other right-angled side is fixed to the side wall of the vertical plate 171. An arc groove 1781 is opened on the hypotenuse to facilitate drilling and tapping of the second end face 23 and the first end face 22. When the vertical plate 171 moves on the bottom plate 17, it drives the extension plate 177 and the reinforcing ribs 178 to move together, thereby making the movement of the vertical plate 171 stable. At this time, the connecting rod 174 of the fixed support rod 1741 is set on the extension plate 177.

[0077] like Figure 7-10 The switching mechanism includes a telescopic rod mounted on the surface of the vertical plate 171. Based on the structure of the vertical plate 171, preferably, one end of the telescopic rod can be fixed to the reinforcing rib plate 178. The pressing plate 173 is provided with a driving plate 179 connected to one end of the telescopic rod. The driving plate 179 is located on one side of the mounting plate 176 and has a gap with it. The telescopic rod contains an elastic element that keeps it in a stretched state, ensuring that the vertical plate 171 is also always in a stretched state. The mounting plate 176 has an entry groove 18 for the support rod 1741 to enter. The width dimension of the connecting rod 174... If the diameter is equal to or smaller than that of the support rod 1741, the connecting rod 174 can also be moved into the groove 18. When the vertical plate 171 abuts against one end of the mounting plate 176, the extension plate 177 on the vertical plate 171 abuts against one end of the mounting plate 176, the clamping plate 173 separates from the outer wall of the housing 2, and the housing 2 is in a detachable state, realizing automatic unloading after reaching the loading and unloading station. When the extension plate 177 on the vertical plate 171 does not abut against one end of the mounting plate 176, the elastic element causes the vertical plate 171 to move with the movement of the clamping plate 173, so that the housing 2 is always kept in a clamped state during the movement.

[0078] like Figure 7-10 Two telescopic rods are symmetrically arranged on both sides of the housing 2 on the vertical plate 171. Preferably, one end of each telescopic rod is fixed to a reinforcing rib plate 178. Two driving plates 179 are also present, corresponding to the positions of the two telescopic rods. This makes the external force applied to the vertical plate 171 by the telescopic rods more even, facilitating the stable movement of the vertical plate 171.

[0079] like Figure 7-10The telescopic rod has the following specific structure: The telescopic rod includes a sleeve 1791 and an inner rod 1792 inserted inside the sleeve 1791. One end of the sleeve 1791 is fixed to the side wall of the reinforcing rib plate 178. One end of the inner rod 1792 is slidably connected inside the sleeve 1791, and the other end is fixed to the drive plate 179. The elastic element is a tension spring 1793 disposed between the sleeve 1791 and the inner rod 1792. During the entire movement, the tension spring 1793 is always in a stretched state.

[0080] like Figure 1-6 The drive mechanism includes a support plate 19 mounted on the base 1 and extending in the direction from the first position to the second position. The support plate 19 is horizontally distributed and its lower end is separated from the upper surface of the base 1 by two vertically distributed plates, which facilitates the support plate 19 being separated from the coolant layer on the upper surface of the base 1. The base plate 17 is slidably connected to the support plate 19 by guide rails 191, that is, the upper surface of the support plate 19 is provided with two parallel guide rails 191. The support plate 19 is provided with a motor screw assembly that causes the base plate 17 to reciprocate. The motor lead screw assembly comprises: First plates 192 extending upwards are respectively provided at both ends of the upper surface of the support plate 19 along its length. A lead screw 193 is rotatably connected between the two first plates 192. One first plate 192 is located near the edge of the base 1, while the other first plate 192 is equipped with a motor 194 that drives the lead screw 193. A block threadedly connected to the lead screw 193 is provided at the lower end of the base plate 17. The lead screw 193 is located between two guide rails 191 and is parallel to the guide rails 191. Bellows-style protective covers 195 are provided on both sides of the base plate 17. The end of the bellows-style protective cover 195 away from the base plate 17 is connected to the first plate 192, thereby covering the lead screw 193 and the guide rails 191 and protecting them from contact with the coolant. The widths of the first plates 192, the base plate 17, and the bellows-style protective covers 195 are all the same as the width of the support plate 19.

[0081] like Figure 1-6 The movement accuracy of the housing 2 from the first position to the second position can be further controlled, as well as the switching between the first processing unit position and the loading / unloading station within the first position, all require control of movement accuracy in order to control the accuracy of the drilling position and the tapping position after drilling; this can be achieved through the following scheme:

[0082] like Figure 1-6 It also includes a limiting component that limits the movement of the base plate 17 to the first position and the second position;

[0083] The limiting component includes a first stop (not shown in the figure), which is disposed on the support plate 19 and is used to abut against one side of the base plate 17 to limit the first position;

[0084] The second stop 196 is disposed on the support plate 19 and is used to abut against the other side of the base plate 17 to limit the second position. The first stop and the second stop 196 are both provided with a first pressure sensor. At this time, the first stop and the second stop 196 are respectively located on both sides of the base plate 17, and the first stop and the second stop 196 are both covered by the bellows-type protective cover 195.

[0085] When the base plate 17 moves to the first position, one side of the base plate 17 abuts against the first stop block. The first pressure sensor on the first stop block collects the first rated pressure value and sends a signal to control the motor screw drive mechanism to stop working. When the base plate 17 moves to the second position, the other side of the base plate 17 abuts against the second stop block 196. The first pressure sensor on the second stop block 196 collects the second rated pressure value and sends a signal to control the motor screw drive mechanism to stop working. When the base plate 17 moves to the first position, one side of the base plate 17 is limited by the first stop block, indicating that the base plate 17 has moved into position. When the base plate 17 moves to the second position, one side of the base plate 17 abuts against the second stop block 196, indicating that the base plate 17 has moved into position. This ensures that the base plate 17 is accurately positioned when moving back and forth between the first and second positions.

[0086] like Figure 6-10 The support component also includes a first positioning plate 197 disposed on one side of the base plate 17; the first positioning plate 197 is distributed parallel to the vertical plate 171.

[0087] When the vertical plate 171 abuts against one end of the mounting plate 176, the clamping plate 173 separates from the outer wall of the housing 2, and the housing 2 is in a detachable state, that is, the housing 2 is in the loading and unloading position. When the housing 2 to be processed is placed between the clamping plate 173 and the vertical plate 171, the power component drives the clamping plate 173 to move towards the vertical plate 171. The vertical plate 171 remains stationary under the tension of the elastic component until the clamping plate 173 presses the housing 2 to be processed onto the vertical plate 171. At this time, the clamping of the housing 2 is completed. Then, the clamping plate 173 drives the vertical plate 171 to move together towards the first positioning plate 197 until one side of the vertical plate 171 abuts against the first positioning plate 197. At this time, the housing 2 moves to the first processing unit position, which is the position of the three drilling power heads 12 corresponding to the drilling position of the housing 2.

[0088] A second pressure sensor is installed on the first positioning plate 197. When the vertical plate 171 abuts against the first positioning plate 197, the second pressure sensor collects the third rated pressure value and sends a signal to control the electric cylinder 1762 to stop working. This indicates that the movement from the loading / unloading station to the first processing unit position is in place with high accuracy.

[0089] Therefore, the movement of the clamping plate 173 has the following effects: Effect 1: It is not only a clamping action, but also a power source for driving the workpiece to move between the first processing unit station and the loading and unloading station. One electric cylinder 1762 completes the two actions of clamping and station switching at the same time, simplifying the mechanism.

[0090] Effect 2: The "pressure holding" function of the clamping plate 173 during the movement process ensures the stability of the transfer. Effect: During the process of the housing 2 moving from the first processing unit back to the loading and unloading station, the housing 2 always remains clamped, avoiding the loosening or displacement of the workpiece due to vibration.

[0091] Effect 3: When the clamping assembly moves to the loading and unloading station, it can automatically release the clamp on the housing 2, making it convenient for operators to directly remove the workpiece.

[0092] Effect 4: The precise "secondary positioning" function ensures the processing accuracy and ensures that the housing 2 can accurately reach the predetermined processing position each time it enters the first processing unit: the second pressure sensor on the first positioning plate 197 detects that the contact pressure reaches the preset value and then sends a signal to stop the electric cylinder 1762. This ensures that the position of the workpiece relative to the drilling power head 12 is absolutely consistent before each processing.

[0093] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A multi-station machining device for power tool housings, characterized in that, Including the base (1); The carrier is reciprocally mounted on the base (1), and the carrier is provided with a clamp for positioning and clamping the housing (2); The machine base (1) is set at a first position, where a first processing unit and a loading and unloading station are provided. The first processing unit includes multiple drilling power heads (12), which are used to drill holes in the upper end face (21) of the housing, the opposite first end face (22) and the second end face (23). The second processing unit is provided at the second position of the base (1). The second processing unit includes multiple tapping power heads (13) and a drilling and tapping combined power head (14). The tapping power head (13) is used to tap the holes that have been drilled. The drilling and tapping combined power head (14) is used to drill and tap the third end face (24) of the housing (2) at the same time. A drive mechanism, which is connected to the carrier component, is used to drive the carrier component to reciprocate between the first position and the second position; A switching mechanism is provided in the first position and connected to the fixture, which is used to drive the fixture to move between the loading and unloading station and the first processing unit position; The bearing component includes a base plate (17), and the clamp includes a vertical plate (171) that abuts against the third end face (24), a clamping plate (173) that presses the shell (2) against the vertical plate (171), a power component that drives the clamping plate (173) to move, a support rod (1741) that is set on the vertical plate (171) via a connecting rod (174) and supports the lower end face of the shell (2), and a limiting block (1742) that is set on the vertical plate (171) and located on both sides of the upper end of the shell (2) and is distributed in cooperation with the outer wall of the shell (2). After the shell (2) is fixed by the clamp, there is a gap between the lower end of the shell (2) and the base plate (17). The switching mechanism includes a telescopic rod set on the surface of the vertical plate (171), a driving plate (179) connected to one end of the telescopic rod on the pressing plate (173), an elastic element inside the telescopic rod to keep the telescopic rod in a stretched state, and an entry groove (18) for the support rod (1741) to enter on the mounting plate (176).

2. The multi-station machining device for power tool housings as described in claim 1, characterized in that, The vertical plate (171) moves on the base plate (17) toward the pressing plate (173). When the switching mechanism and the power component work together to move the pressing plate (173) away from the vertical plate (171), the vertical plate (171) and the shell (2) are moved out of the first processing unit position and moved to the loading and unloading station. During this process, the shell (2) is still clamped by the pressing plate (173) and the vertical plate (171). After moving to the loading and unloading station, the switching mechanism works with the power component to separate the pressing plate (173) from the outer wall of the shell (2).

3. The multi-station machining device for power tool housings as described in claim 2, characterized in that, The power component includes a mounting plate (176) mounted on the base plate (17), two relatively distributed slide rails (1761) mounted on the upper surface of the mounting plate (176), and an electric cylinder (1762) mounted on the mounting plate (176) and driving the pressing plate (173) to move on the slide rails (1761). The lower end of the pressing plate (173) is slidably connected to the slide rails (1761) via a slider (1763).

4. The multi-station machining device for power tool housings as described in claim 3, characterized in that, The driving plate (179) is located on one side of the mounting plate (176). When the vertical plate (171) abuts against one end of the mounting plate (176), the clamping plate (173) separates from the outer wall of the housing (2), and the housing (2) is in a detachable state. When the vertical plate (171) does not abut against one end of the mounting plate (176), the elastic element causes the vertical plate (171) to move with the movement of the clamping plate (173), so that the housing (2) is always clamped during the movement.

5. A multi-station machining device for power tool housings as described in claim 4, characterized in that, The telescopic rods are two in number and symmetrically arranged on both sides of the housing (2) on the vertical plate (171). There are two drive plates (179), which correspond to the positions of the two telescopic rods respectively.

6. The multi-station machining device for power tool housings as described in claim 5, characterized in that, The telescopic rod includes a sleeve (1791) and an inner rod (1792) inserted in the sleeve (1791), and the elastic element is a tension spring (1793) disposed between the sleeve (1791) and the inner rod (1792).

7. A multi-station machining device for power tool housings as described in claim 4, characterized in that, The drive mechanism includes a support plate (19) mounted on a base (1) and extending in the direction from the first position to the second position. The base plate (17) is slidably connected to the support plate (19) via a guide rail (191). The support plate (19) is provided with a motor screw assembly that causes the base plate (17) to reciprocate.

8. A multi-station machining device for power tool housings as described in claim 7, characterized in that, It also includes a limiting component that limits the movement of the base plate (17) to the first position and the second position; The limiting member includes a first stop block disposed on the support plate (19) for abutting against one side of the base plate (17) to limit a first position; The second stop (196) is disposed on the support plate (19) and is used to abut against the other side of the base plate (17) to define the second position. The first stop and the second stop (196) are both provided with a first pressure sensor. When the base plate (17) moves to the first position, one side of the base plate (17) abuts against the first stop, the first pressure sensor on the first stop collects the first rated pressure value and sends a signal to control the motor (194) lead screw (193) drive mechanism to stop working; when the base plate (17) moves to the second position, the other side of the base plate (17) abuts against the second stop (196), the first pressure sensor on the second stop (196) collects the second rated pressure value and sends a signal to control the motor (194) lead screw (193) drive mechanism to stop working.

9. A multi-station machining device for power tool housings as described in claim 8, characterized in that, The support also includes a first positioning plate (197) disposed on one side of the base plate (17). When the vertical plate (171) comes into contact with one end of the mounting plate (176), the clamping plate (173) separates from the outer wall of the housing (2), and the housing (2) is in a detachable state, that is, the housing (2) is in the loading and unloading station. When the housing (2) to be processed is placed between the clamping plate (173) and the vertical plate (171), the power component drives the clamping plate (173) to move towards the vertical plate (171). The vertical plate (171) remains stationary under the tension of the elastic component until the clamping plate (173) presses the housing (2) to be processed onto the vertical plate (171). At this time, the clamping of the housing (2) is completed. Then the clamping plate (173) drives the vertical plate (171) to move together towards the first positioning plate (197) until one side of the vertical plate (171) comes into contact with the first positioning plate (197). At this time, the housing (2) moves to the position of the first processing unit.

10. A multi-station machining device for power tool housings as described in claim 9, characterized in that, The first positioning plate (197) is equipped with a second pressure sensor. When the vertical plate (171) abuts against the first positioning plate (197), the second pressure sensor collects the third rated pressure value and sends a signal to control the electric cylinder (1762) to stop working.

Images