Multi-station machining device for electric tool shell

Abstract

The invention discloses a multi-station machining device for an electric tool shell, relates to the technical field of machine tool machining, and has the advantage of improving the machining efficiency of a plurality of unthreaded holes and threaded connection holes in the shell. A clamp for positioning and clamping the shell is arranged on the bearing part; a first machining unit and a loading and unloading station are arranged at the first position, and the first machining unit is used for drilling the upper end face of the shell and the first end face and the second end face which are opposite to each other; a second machining unit is arranged at the second position, the second machining unit conducts tapping machining on the drilled holes, and the drilling and tapping combined power head is used for conducting drilling and tapping machining on the third end face of the shell at the same time; a switching mechanism is arranged in the first position, connected with the clamp and used for driving the clamp to move between the loading and 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 Figures 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, tapping machines, and other common equipment are used in conjunction with special fixtures for single-hole or single-process operations. The workpiece needs to be clamped and positioned multiple times, resulting in many turnover processes, low production efficiency, and the accumulation of human error leads 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: This invention provides a multi-station machining device for power tool housings, including a base; A carrier is reciprocally mounted on the base, and the carrier is provided with a clamp for positioning and clamping the housing; 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. The machine base is set at a second position, and a second processing unit is set at the second position. 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. The drilling and tapping combined power head is used to drill and tap the third end face of the housing 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; The switching mechanism is arranged in the first position and connected with the clamp, and is used to drive the clamp to move between the loading and unloading station and the first machining unit position.

[0007] By adopting the technical scheme, an operator in the first position installs a shell to be machined on the clamp at the loading and unloading station, and completes positioning and clamping. After clamping, the switching mechanism is started, the switching mechanism drives the clamp and the shell thereon to move from the loading and unloading station to the machining station of the first machining unit in the first position, that is, to align the plurality of drilling power heads. When the shell reaches the machining station of the first machining unit, the plurality of drilling power heads simultaneously act to drill the upper end face, the first end face and the second end face of the shell. After the drilling process in the first position is completed, the driving mechanism is started, the driving mechanism is in transmission connection with the carrier, and drives the carrier to move from the first position to the second position. After the carrier reaches the second position, the second machining unit is started, the plurality of tapping power heads tap the holes drilled in the previous process, and at the same time, the drilling and tapping combined power head drills and taps the third end face of the shell, respectively, to complete the drilling and tapping processes in one feeding; After all the processes in the second position are completed, the driving mechanism is started again to drive the carrier with the machined shell to return to the first position. At this time, the shell returns to the machining station of the first machining unit in the first position, the switching mechanism is started again to pull the clamp from the machining station of the first machining unit back to the loading and unloading station, an operator unloads the machined shell, and loads the next shell blank to be machined, to start the next cycle. By arranging two positions on the machine base and arranging drilling units and tapping units in the first position and the second position, respectively, the shell can automatically complete the drilling and tapping processes of two different properties after being clamped once, the transfer time of the workpiece between different machine tools is reduced, the first machining unit is provided with a plurality of drilling power heads corresponding to the upper end face, the first end face and the second end face, and the drilling operations on the three faces are simultaneously performed, the drilling machining time of a single shell is shortened, the third end face of the shell is provided with a drilling and tapping combined power head, and the tapping and drilling requirements of different holes are simultaneously met, so that the machining efficiency of the plurality of light holes and threaded connection holes of the shell is improved, and the machining cost of a single shell is reduced. By arranging the switching mechanism in the first position, the loading and unloading station is spatially separated from the first machining unit, which has the advantages that the operator's hands are away from the drilling power heads working, the operation safety of the operator is improved, the driving mechanism drives the carrier to reciprocate, the switching mechanism is accurately moved in the station, the whole device realizes full-automatic machining from the shell blank to the finished product, and since all the processes of the workpiece are completed in one clamping, the position tolerance between the machining surfaces is easier to guarantee, so that the stability and consistency of the light holes and threaded connection holes of the machined shell are high.

[0008] Preferably, the support member includes a base plate; 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. 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] Preferably, it further includes a limiting member for limiting the movement of the base plate to the first position and the second position; The limiting piece comprises a first stopper arranged on the support plate and used for abutting against one side of the bottom plate to define a first position; A second stopper is arranged on the support plate and used for abutting against the other side of the bottom plate to define a second position, and the first stopper and the second stopper are both provided with a first pressure sensor; When the bottom plate moves to the first position, one side of the bottom plate abuts against the first stopper, the first pressure sensor on the first stopper collects a first rated pressure value and sends a signal to control the motor-screw rod driving mechanism to stop working; when the bottom plate moves to the second position, the other side of the bottom plate abuts against the second stopper, the first pressure sensor on the second stopper collects a second rated pressure value and sends a signal to control the motor-screw rod driving mechanism to stop working.

[0015] Preferably, the bearing piece further comprises a first positioning plate arranged on one side of the bottom plate. When the vertical plate abuts against one end of the mounting plate, the pressing plate is separated from the outer wall of the shell, and the shell is in a detachable state, i.e., the shell is in a loading and unloading station; when the shell to be machined is placed between the pressing plate and the vertical plate, the power piece drives the pressing plate to move towards the vertical plate, and the vertical plate remains stationary under the stretching action of the elastic piece until the pressing plate presses the shell to be machined against the vertical plate, at which time the clamping of the shell is completed; then the pressing 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 which time the shell moves to the first machining unit position.

[0016] Preferably, the first positioning plate is provided with a second pressure sensor, and 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.

[0017] The beneficial effects of the present application are: 1. By arranging two positions on the machine base and arranging a drilling unit and a tapping unit at the first position and the second position respectively, the shell can automatically complete two different machining processes of drilling and tapping after one-time clamping, the transfer time of the workpiece between different machine tools is reduced, a plurality of drilling power heads are arranged in the first machining unit and correspond to the upper end face, the first end face and the second end face respectively, and the drilling operations on the three faces are performed simultaneously, the drilling machining time of a single shell is shortened, a drilling and tapping combined power head is arranged for the third end face of the shell, and the tapping and drilling requirements of different holes are simultaneously realized, so that the machining efficiency of a plurality of light holes and threaded connection holes on the shell is improved, and the machining cost of a single shell is reduced. 2. The first position is separated from the first machining unit by setting a switching mechanism inside the first position, which brings the following benefits: the operator's hands are away from the drilling power head when loading and unloading, improving the safety of the operator; in addition, the power member not only has the function of clamping and positioning the shell, but also can realize the mutual switching of the shell from the first machining unit position to the loading and unloading station and automatic unloading after reaching the loading and unloading station; 3. The driving mechanism drives the bearing to move back and forth, and cooperates with the precise movement of the switching mechanism in the station, so that the whole device realizes full-automatic machining from the shell blank to the finished product. Since all machining is completed in one clamping, the position tolerance between the machined surfaces is easier to guarantee, so that the size stability and consistency of the machined shell are high; The first position and the second position are accurately controlled by the limiting member and the first pressure sensor; The first position and the second position are accurately controlled by the first positioning plate and the second pressure sensor; 4. The pressing plate is not only a simple clamping element, but also cooperates with the vertical plate, the switching mechanism and the power member to realize the purposes of clamping, transferring, precise positioning and automatic loosening. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 The structure schematic diagram of the embodiment is shown in the figure; Figure 2 The structure schematic diagram of the embodiment is shown in the figure; Figure 1 The structure schematic diagram of the embodiment is shown in the figure; Figure 3 The structure schematic diagram of the embodiment is shown in the figure; Figure 4 The structure schematic diagram of the embodiment is shown in the figure; Figure 5 The structure schematic diagram of the embodiment is shown in the figure; Figure 6 The structure schematic diagram of the embodiment is shown in the figure; Figure 5 The structure schematic diagram of the embodiment is shown in the figure; Figure 7 The structure schematic diagram of the embodiment is shown in the figure; Figure 8Structure schematic diagram for embodying the telescopic rod of the present embodiment; Figure 9 Structure schematic diagram for embodying the extension plate of the present embodiment; Figure 10 Structure schematic diagram for embodying the through hole of the present embodiment; Figure 11 Structure schematic diagram for embodying the fixing member of the present embodiment; Figure 12 Structure schematic diagram for embodying the machined shell; Figure 13 Structure schematic diagram for embodying the third end face of the machined shell; Figure 14 Structure schematic diagram for embodying the machined shell.

[0020] Explanation of reference signs: In the figure: 1, base; 11, splash guard; 12, drilling power head; 13, tapping power head; 14, drilling and tapping combined power head; 15, storage box; 151, communication pipe; 16, stand column; 161, fixed arm; 162, horizontal plate; 163, horizontal sliding seat; 164, vertical plate; 165, vertical sliding seat; 166, dovetail block; 167, driving plate; 168, threaded rod; 169, clamping block; 17, bottom 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, sliding rail; 1762, electric cylinder; 1763, sliding block; 177, extension plate; 178, reinforcing rib plate; 1781, arc-shaped groove; 179, driving plate; 1791, sleeve; 1792, inner rod; 1793, tension spring; 18, entry slot; 19, support plate; 191, guide rail; 192, first plate; 193, screw rod; 194, motor; 195, organ type protective cover; 196, second stop block; 197, first positioning plate; 2, shell; 21, upper end face of the shell; 22, first end face; 23, second end face; 24, third end face; 25, light hole; 26, threaded connection hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0022] A multi-station processing device for an electric tool shell, such as Figures 1-6 andFigures 12-14 , including the base 1, the upper end of the base 1 is provided with a splash plate 11, the splash plate 11 is a surrounding plate structure circumferentially arranged around the upper end surface of the base 1, used to block and store the cooling liquid splashed during processing; The carrier is movably arranged on the base 1, and the carrier is provided with a clamp for positioning and clamping the shell 2; The first position is provided with a first machining unit and a loading and unloading station, the first machining unit includes three drilling power heads 12, respectively used for drilling the upper end surface 21, the opposite first end surface 22 and the second end surface 23 of the shell, at this time, according to the holes on the shell 2, it can be known that the drilling power head 12 installed on the upper end surface 21 of the shell 2 has four drill bits, the drill bit for drilling the upper end surface 21 of the shell 21 can discharge the drillings outside when drilling, and the drilling depth is not deep, for example, the depth of the four drill holes of the upper end surface 21 of the shell is 14.5mm, so that the drillings generated by drilling will not affect the subsequent tapping; the drilling power head 12 installed on the drilling power head 12 for drilling the first end surface 22 and the second end surface 23 has one drill bit, the drilling power head 12 can make the drill bit a power component integrating rotation and feeding functions, so that when the shell 2 moves to the first machining unit, each drilling power head 12 drills each end surface of the shell 2; the main movement of the drilling power head 12 is driven by a three-phase asynchronous motor 194; the first position is directly below the drilling power head 12 for machining the upper end surface 21 of the shell; The second position is provided with a second machining unit, the second machining unit includes three tapping power heads 13 and a drilling and tapping combined power head 14, the tapping power head 13 is used for tapping the holes that have been drilled, and the drilling and tapping combined power head 14 is used for drilling and tapping the third end surface 24 of the shell 2 at the same time, the drilling and tapping combined power head 14 has a drill bit corresponding to the drilling position on the third end surface 24 and a tap corresponding to the tapping position on the third end surface 24; at this time, the tapping position is the self-tapping position on the shell 2 blank; the tapping power head 13 has a tap corresponding to the hole position drilled on the shell 2 at the first position; the loading and unloading station is located on the side away from the second position of the first machining unit; the main movement of the tapping power head 13 is driven by a servo motor 194; the second position is directly below the tapping power head 13 for machining the upper end surface 21 of the shell; the light hole 25 is a hole that has not been tapped after drilling; after the machining of the shell 2 is completed, only the four corners of the third end surface 24 are light holes 25; The driving mechanism is in transmission connection with the carrier, and is used for driving the carrier to reciprocate between the first position and the second position; The first position is provided with a switching mechanism connected with the clamp, used for driving the clamp to move between the loading and unloading station and the first machining unit position; 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.

[0023] like Figures 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. like Figures 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.

[0024] like Figures 1-6 and Figure 11The fixing member includes a horizontal plate 162 arranged on the upper end surface of the base 1, a horizontal sliding seat 163 horizontally slidingly connected to the upper end of the horizontal plate 162, a vertical plate 164 arranged on the upper end of the horizontal sliding seat 163, a vertical sliding seat 165 vertically slidingly connected to the vertical plate 164, and a power head fixed to the sliding seat. The horizontal plate 162 and the vertical plate 164 are respectively provided with dovetail blocks 166 arranged along the long edges of the horizontal plate 162 and the vertical plate 164. The horizontal sliding seat 163 and the vertical sliding seat 165 are respectively provided with dovetail grooves sliding on the dovetail blocks 166. The horizontal plate 162 and the vertical plate 164 are respectively provided with a driving plate 167 extending to one side of the horizontal sliding seat 163 or the vertical sliding seat 165. The driving plate 167 is screw-connected with a threaded rod 168 at the side. The threaded rod 168 extends out of the driving plate 167 at both ends and is rotatably connected to the horizontal sliding seat 163 or the vertical sliding seat 165 at one end. The threaded rod 168 is screw-connected with a clamping block 169 away from the driving plate 167. When the position of the power head needs to be adjusted, the threaded rod 168 is rotated. The clamping block 169 is away from the driving plate 167 when the position is adjusted. When the position is adjusted to the right position, the clamping block 169 is rotated until the clamping block 169 is in contact with the driving plate 167, thereby limiting the position of the horizontal sliding seat 163 and the vertical sliding seat 165 and stabilizing the position of the power head.

[0025] As Figures 1-6 , the operator installs the shell 2 to be processed to the clamp in the loading and unloading station in the first position. The positioning and clamping are completed. After the clamping, the switching mechanism is started. The switching mechanism drives the clamp and the shell 2 thereon to move from the loading and unloading station in the first position to the machining station of the first machining unit, i.e., to align the three drilling power heads 12. When the shell 2 reaches the machining station of the first machining unit, the three drilling power heads 12 simultaneously act to drill the upper end surface 21, the first end surface 22 and the second end surface 23 of the shell. As Figures 1-6 , after the drilling process in the first position is completed, the driving mechanism is started. The driving mechanism is in transmission connection with the carrier and drives the carrier to move from the first position to the second position. After the carrier reaches the second position, the second machining 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 surface 24 of the shell 2, respectively. One feeding completes the drilling and tapping processes. After all the processes in the second position are completed, the driving mechanism is started again to drive the carrier with the shell 2 processed to return to the first position. At this time, the shell 2 returns to the first machining unit station in the first position, the switching mechanism is started again, the clamp is pulled back from the first machining unit station to the loading and unloading station, the operator unloads the machined shell 2, and loads the next shell 2 blank to be machined, and the next cycle begins; As Figures 1-6 , by setting two positions on the machine base 1 and arranging the drilling unit and the tapping unit in the first position and the second position respectively, the shell 2 can automatically complete two different machining processes of drilling and tapping after clamping once, the transfer time of the workpiece between different machine tools is reduced, the first machining unit is provided with three drilling power heads 12 corresponding to the upper end face, the first end face 22 and the second end face 23, respectively, and the drilling operations on the three faces are performed simultaneously, thereby shortening the drilling machining time of a single shell 2, the drilling and tapping combined power head 14 is arranged for the third end face 24 of the shell 2, and the tapping and drilling requirements of different holes are simultaneously realized, thereby improving the machining efficiency of the plurality of light holes 25 and the threaded connection holes 26 on the shell 2, and reducing the machining cost of a single shell 2; by setting the switching mechanism inside the first position, the loading and unloading station is spatially separated from the first machining unit, which has the advantages that the operator's hands are away from the drilling power head 12 that is working when loading and unloading, and the operation safety of the operator is improved, the driving mechanism drives the carrier to move back and forth, and cooperates with the accurate movement of the switching mechanism in the station, the whole device realizes the full-automatic machining from the shell 2 blank to the finished product, and since all machining is completed in one clamping, the position tolerance between the machining surfaces is easier to guarantee, so that the stability and consistency of the light holes 25 and the threaded connection holes 26 of the machined shell 2 are high.

[0026] As Figure 2 and Figures 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.

[0027] like Figure 2 and Figures 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.

[0028] like Figure 2 and Figures 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.

[0029] likeFigures 7-10 The lower end of the vertical plate 171 is provided with horizontally distributed extension plates 177, which are located below the shell 2. Since the shell 2 is fixed by the clamp, there is a gap between the lower end of the shell 2 and the bottom plate 17, so that the gap facilitates the arrangement of the extension plates 177. The two sides of the plate surface of the vertical plate 171 are provided with reinforcing rib plates 178. At this time, the two reinforcing rib plates 178 are respectively located on the two sides of the shell 2. The reinforcing rib plate 178 is a right triangle plate. One of the right angle edges of the reinforcing rib plate 178 extends to the bottom plate 17, and the other right angle edge is fixed with the side wall of the vertical plate 171. An arc-shaped groove 1781 is formed on the hypotenuse, which facilitates the drilling and tapping of the second end surface 23 and the first end surface 22. At this time, the vertical plate 171 moves together with the extension plates 177 and the reinforcing rib plates 178 when moving on the bottom plate 17, thereby stabilizing the movement of the vertical plate 171. At this time, the connecting rod 174 of the fixed support rod 1741 is arranged on the extension plate 177.

[0030] As Figures 7-10 The switching mechanism includes a telescopic rod arranged on the plate surface of the vertical plate 171. According to the structure of the vertical plate 171, one end of the telescopic rod is preferably fixed on the reinforcing rib plate 178. The pressing plate 173 is provided with a driving plate 179 connected with 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 the mounting plate 176. An elastic member is arranged in the telescopic rod to keep the telescopic rod in a stretched state at all times. The elastic member keeps the vertical plate 171 in a pulled state at all times. The mounting plate 176 is provided with an entering groove 18 for the support rod 1741 to enter. The width of the connecting rod 174 is equal to or less than the diameter of the support rod 1741. At this time, the connecting rod 174 can also be moved into the entering 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 pressing plate 173 is separated from the outer wall of the shell 2, and the shell 2 is in a detachable state, thereby achieving automatic unloading after the shell 2 reaches 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 member moves the vertical plate 171 together with the pressing plate 173, so that the shell 2 always keeps a clamped state during the movement.

[0031] As Figures 7-10 The telescopic rod is two and symmetrically arranged on the two sides of the shell 2 on the vertical plate 171. One end of each of the two telescopic rods is fixed on the reinforcing rib plate 178. The driving plate 179 is two and corresponds to the positions of the two telescopic rods. At this time, the telescopic rod applies external force to the vertical plate 171 more uniformly, thereby facilitating the stable movement of the vertical plate 171.

[0032] As Figures 7-10The telescopic rod comprises a sleeve 1791 and an inner rod 1792 inserted into 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 in the sleeve 1791, the other end is fixed to the driving plate 179, the elastic member is a tension spring 1793 arranged between the sleeve 1791 and the inner rod 1792, and the tension spring 1793 is always in a stretched state during the whole movement process.

[0033] As Figures 1-6 The driving mechanism comprises a support plate 19 arranged 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 the lower end of the support plate 19 is away from the upper end surface of the base 1 through two vertically distributed plate frames, so that the support plate 19 is away from the cooling liquid layer on the upper end surface of the base 1, and the bottom plate 17 is slidably connected to the support plate 19 through a guide rail 191, that is, two parallel guide rails 191 are arranged on the upper end surface of the support plate 19, and a motor screw assembly for reciprocating movement of the bottom plate 17 is arranged on the support plate 19. The motor screw assembly is specifically: two first plates 192 extending upward are arranged at the two ends of the length direction of the upper end surface of the support plate 19, respectively, a screw rod 193 is rotatably connected between the two first plates 192, one of the first plates 192 is arranged close to the edge of the base 1, the other first plate 192 is provided with a motor 194 for driving the screw rod 193 to rotate, the lower end of the bottom plate 17 is provided with a block threadedly connected with the screw rod 193, and the screw rod 193 is located between the two guide rails 191 and is arranged in parallel with the guide rails 191. The two sides of the bottom plate 17 are respectively provided with an accordion protective cover 195, one end of the accordion protective cover 195 away from the bottom plate 17 is connected with the first plate 192, so as to cover the screw rod 193 and the guide rail 191, and protect the screw rod 193 and the guide rail 191 from contacting the cooling liquid. The widths of the first plate 192, the bottom plate 17 and the accordion protective cover 195 are consistent with the width of the support plate 19.

[0034] As Figures 1-6 The movement precision of the shell 2 from the first position to the second position can be further controlled, and the movement precision needs to be controlled for switching the position of the first machining unit in the first position and the loading and unloading station, so as to control the precision of the drilling position and the tapping position after drilling; the following scheme can be used to achieve the above purpose: As Figures 1-6 Further comprising a limiting piece for limiting the movement of the bottom plate 17 to the first position and the second position; The limiting piece comprises a first stop block (not shown in the figure) arranged on the support plate 19 and used for abutting against one side of the bottom plate 17 to limit the first position; The second stopper 196 is arranged on the support plate 19 and used to abut against the other side of the bottom plate 17 to define the second position. The first stopper and the second stopper 196 are both provided with the first pressure sensor. At this time, the first stopper and the second stopper 196 are respectively located on the two sides of the bottom plate 17, and the first stopper and the second stopper 196 are both covered by the accordion protective cover 195. When the bottom plate 17 moves to the first position, one side of the bottom plate 17 abuts against the first stopper, the first pressure sensor on the first stopper collects a first rated pressure value and sends a signal to control the motor-screw drive mechanism to stop working. When the bottom plate 17 moves to the second position, the other side of the bottom plate 17 abuts against the second stopper 196, the first pressure sensor on the second stopper 196 collects a second rated pressure value and sends a signal to control the motor-screw drive mechanism to stop working. When the bottom plate 17 moves to the first position, one side of the bottom plate 17 is limited by the first stopper, indicating that the bottom plate 17 is moved to the position. When the bottom plate 17 moves to the second position, one side of the bottom plate 17 abuts against the second stopper 196, indicating that the bottom plate 17 is moved to the position. At this time, the position of the bottom plate 17 is accurate when moving back and forth between the first position and the second position.

[0035] As shown in Figures 6-10 The carrier further includes a first positioning plate 197 arranged on one side of the bottom plate 17. The first positioning plate 197 is distributed in parallel with the vertical plate 171.

[0036] When the vertical plate 171 abuts against one end of the mounting plate 176, the pressing plate 173 is separated from the outer wall of the shell 2, and the shell 2 is in a detachable state, i.e., the shell 2 is in a loading and unloading station. When the shell 2 to be processed is placed between the pressing plate 173 and the vertical plate 171, the power member drives the pressing plate 173 to move towards the vertical plate 171, and the vertical plate 171 remains stationary under the stretching action of the elastic member until the pressing plate 173 presses the shell 2 to be processed on the vertical plate 171. At this time, the clamping of the shell 2 is completed, and then the pressing 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 shell 2 moves to the first machining unit position, i.e., the position corresponding to the drilling of the shell 2 by the three drilling power heads 12.

[0037] The first positioning plate 197 is provided with a second pressure sensor. When the vertical plate 171 abuts against the first positioning plate 197, the second pressure sensor collects a third rated pressure value and sends a signal to control the electric cylinder 1762 to stop working. At this time, it indicates that the movement from the loading and unloading station to the first machining unit position is in place, and the accuracy is high.

[0038] Therefore, the movement of the pressing 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 machining unit station and the loading and unloading station. An electric cylinder 1762 simultaneously completes the clamping and station switching actions, simplifying the mechanism.

[0039] Effect 2: The "pressure maintaining" function of the pressing plate 173 during movement ensures the stability of the transfer. Effect: During the process of moving the shell 2 from the first machining unit station back to the loading and unloading station, the shell 2 is always kept in a clamped state, avoiding the loosening or position deviation of the workpiece due to vibration.

[0040] Effect 3: When the clamp assembly moves to the loading and unloading station, it can automatically release the clamping of the shell 2, making it convenient for the operator to directly take down the workpiece.

[0041] Effect 4: Precise "second positioning" function ensures machining accuracy, ensuring that the shell 2 can accurately reach the predetermined machining position each time it enters the first machining unit: The second pressure sensor on the first positioning plate 197 detects that the contact pressure reaches the preset value, and immediately sends a signal to stop the electric cylinder 1762, which ensures that the position of the workpiece relative to the drilling power head 12 is absolutely consistent before each machining.

[0042] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application 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 to drive the fixture to move between the loading / unloading station and the first processing unit position.

2. The multi-station machining device for power tool housings as described in claim 1, characterized in that, The supporting component includes a base plate (17); 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 bottom plate (17). 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 switching mechanism includes a telescopic rod set on the surface of the vertical plate (171). The clamping 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). The telescopic rod is provided with an elastic element that keeps the telescopic rod in a stretched state. The mounting plate (176) is provided with an entry groove (18) for the support rod (1741) to enter. 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.

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