An edge trimming auxiliary tooling for a housing part

Abstract

The present invention relates to the technical field of shell part processing and manufacturing, in particular to an auxiliary tooling for trimming shell parts. The auxiliary tooling for trimming shell parts includes a left-positioned indexing machine, a right-positioned indexing machine, a carrying flat plate, a shell part bearing portion, and a pushing and pressing portion. The carrying flat plate is jointly borne by the left-positioned indexing machine and the right-positioned indexing machine, and when the left-positioned indexing machine and the right-positioned indexing machine are started synchronously, it can perform a following circumferential rotational movement. The shell part bearing portion for temporarily bearing the shell part and the pushing and pressing portion for pushing and pressing the shell part are both borne by the carrying flat plate, and they are arranged opposite to each other. When the shell part to be trimmed is initially positioned relative to the shell part bearing portion, the pushing and pressing portion acts to achieve the lateral pressing operation on the shell part. In this way, the shell part can complete the trimming operation only through one clamping operation, avoiding the occurrence of positioning error phenomena caused by repeated clamping multiple times, and the cutting action of the milling cutter always remains continuous.

Description

Technical Field

[0001] The present invention relates to the technical field of shell part processing and manufacturing, and in particular to an edge trimming auxiliary tooling for shell parts. Background Art

[0002] A Bluetooth headset case is composed of a case body, a case cover, and a hinge. The hinge is used to connect the case body and the case cover, and enables the case cover to freely perform a flipping motion when subjected to a lifting force, so as to facilitate the operation of taking / putting the Bluetooth headset. The case body is generally a shell-like part, mostly prepared by injection molding or die casting processes, and after molding, edge trimming treatment needs to be performed to eliminate the burrs, defects generated in the adjacent port area during the injection molding or die casting process, or to make its final forming dimensions meet the requirements of the design blueprint (as shown in Figures 1-4 ).

[0003] In the prior art, the edge trimming process of the case body is roughly as follows: First, the case body is clamped by a vise, and a milling cutter (or a laser cutting head) performs a planar motion to cut one side wall. Then, the case body is removed from the vise, rotated 90° and clamped again, and the milling cutter (or the laser cutting head) performs a planar motion to cut the adjacent other side wall. The above operations are repeated until all the side walls of the case body are cut. In actual operation, there are the following problems: 1) Due to the need to repeatedly perform clamping and unclamping operations, the cutting action of the milling cutter is not continuous, and its waiting time is long. Moreover, before each re-clamping operation, it is necessary to ensure that the same positioning reference as the previous clamping is maintained, and the operation is extremely cumbersome. Thus, not only the quality requirements for the operators are extremely high, but also the processing efficiency is extremely low, and the single-piece processing time exceeds 7 minutes; 2) Considering the need to avoid damaging the case body, before performing the formal clamping operation, it is also necessary to fill the inner cavity with an auxiliary support block, which results in a long preparation time and further reduces the processing efficiency; 3) Due to errors in the clamping positioning reference, it is extremely easy to cause the alignment degree of the cuts formed by each side wall not to meet the requirements of the design blueprint, which is extremely easy to cause the occurrence of workpiece scrapping or a large amount of manpower and material resources need to be invested in subsequent trimming operations, thus inevitably increasing the processing cost. Therefore, it is urgent for technical personnel to solve the above problems. Summary of the Invention

[0004] Therefore, in view of the above existing problems and defects, the designers of the present invention collected relevant materials, through multi-party evaluation and consideration, and through continuous experiments and modifications by technical personnel with many years of R & D experience in this industry, finally led to the emergence of the edge trimming auxiliary tooling for shell parts.

[0005] To solve the above technical problems, the present invention relates to an edge trimming auxiliary tooling for a housing part, which is used in conjunction with a milling edge device to perform edge trimming operations on the open end of the housing part. The edge trimming auxiliary tooling for the housing part includes a left positioner, a right positioner, a bearing flat plate, a housing part bearing portion, and a pushing and pressing portion. The left positioner and the right positioner are arranged opposite to each other. The bearing flat plate is jointly borne by the left positioner and the right positioner, and when the left positioner and the right positioner are started synchronously, it can perform a following circumferential rotational movement. The housing part bearing portion for temporarily bearing the housing part and the pushing and pressing portion for pushing and pressing the housing part are both borne by the bearing flat plate, and they are arranged opposite to each other along the left-right direction. Exactly corresponding to the positioning position of the housing part, a process avoidance notch is provided on the bearing flat plate for the milling cutter of the milling edge device to freely pass through and to complete the feed movement continuously. When the housing part to be edge-trimmed is initially positioned relative to the housing part bearing portion, the pushing and pressing portion acts to perform a lateral pressing operation on the housing part.

[0006] As a further improvement of the technical solution of the present invention, the housing part bearing portion includes a bearing member. The bearing member is detachably fixed on the bearing flat plate, and a profiling section adapted to the inner cavity of the housing part is formed thereon.

[0007] Certainly, as another modified design of the above technical solution, the housing part bearing portion is a split structure, which includes a lower split part and an upper split part. The lower split part is detachably fixed on the bearing flat plate. After the upper split part is positioned relative to the lower split part, a profiling surface set adapted to the inner cavity of the housing part is jointly formed.

[0008] As a further improvement of the technical solution of the present invention, the upper split part is detachably connected to the lower split part by screws. Correspondingly, a series of mounting through holes adapted to the screws and penetrating along the up-down direction are formed on the upper split part adjacent to its right side wall position.

[0009] As a further improvement of the technical solution of the present invention, both the upper split part and the lower split part are non-rigid parts. When an upward pushing force acts on the bottom wall of the upper split part, it performs an expansion movement away from the lower split part. At the same time, the profiling surface set expands adaptively along the up-down direction until it touches the inner wall of the housing part. When an elastic restoring force acts on the bottom wall of the upper split part, it performs a contraction movement towards the lower split part. At the same time, the profiling surface set contracts adaptively along the up-down direction until the contact with the inner wall of the housing part is released.

[0010] As a further improvement of the technical solution of the present invention, the housing part loading portion further includes a wedge push mechanism. The wedge push mechanism is used to provide an upward pushing force for the bottom wall of the upper split part, and it includes a wedge block and a first linear motion element. The bottom wall of the wedge block is beveled to form an upper sliding surface, and correspondingly, the top wall of the lower split part is beveled to form a lower sliding surface that is used in cooperation with the upper sliding surface. The first linear motion element is borne by the lower split part and / or the upper split part; when the first linear motion element is activated, the wedge block performs a translational motion along the direction from right to left. At the same time, the upper sliding surface performs a side-sliding motion relative to the lower sliding surface, and the upper split part performs an expansion motion away from the lower split part; when the first linear motion element is activated in the reverse direction, the wedge block performs a translational retraction motion along the direction from left to right. At the same time, the upper sliding surface performs a reverse side-sliding motion relative to the lower sliding surface, and the upper split part performs a contraction motion towards the lower split part.

[0011] As a further improvement of the technical solution of the present invention, the housing part loading portion includes a front split part and a second linear motion element. The front split part cooperates with the lower split part and the upper split part to form the set of profiling surfaces that are adapted to the inner cavity of the housing part. The second linear motion element is borne by the lower split part. When the second linear motion element is activated, the front split part performs a translational motion along the front-back direction towards / away from the lower split part and the upper split part until it touches / releases the inner wall of the housing part.

[0012] As a further improvement of the technical solution of the present invention, the pushing and pressing portion includes a support seat, a third linear motion element, and a pushing composite plate. The support seat is used to bear the third linear motion element and is detachably fixed on the carrying flat plate. A profiling cavity that is adapted to the outer shape of the housing part is recessed from the right side wall of the pushing composite plate. The pushing composite plate performs a translational motion towards / away from the housing part loading portion under the action of the driving force of the third linear motion element until it touches / releases the left end of the housing part.

[0013] As a further improvement of the technical solution of the present invention, the pushing composite plate is formed by gluing a metal plate and a plastic layer. The profiling cavity is formed on the plastic layer.

[0014] As a further improvement of the technical solution of the present invention, the housing part edge trimming auxiliary tooling further includes a material supporting portion. The material supporting portion is borne by the carrying flat plate and applies a pressing force to the non-edge trimming area of the housing part.

[0015] As a further improvement of the technical solution of the present invention, the material supporting portion includes a front material supporting sub-portion and a rear material supporting sub-portion that are linearly arranged along its front-back direction.

[0016] As a further improvement of the technical solution of the present invention, the front material supporting part includes a front material supporting block and a fourth linear motion element. The rear material supporting part includes a rear material supporting block and a fifth linear motion element. The fourth linear motion element and the fifth linear motion element are detachably fixed to the bearing flat plate, and both of them pass through the process avoidance notch. The front material supporting block performs a displacement motion towards / away from the housing part under the driving force of the fourth linear motion element to realize / relieve the pressing against the housing part; the rear material supporting block performs a displacement motion towards / away from the housing part under the driving force of the fifth linear motion element to realize / relieve the pressing against the housing part.

[0017] As a further improvement of the technical solution of the present invention, the trimming auxiliary tooling for the housing part further includes a mounting substrate. The mounting substrate is used to support the left positioner and the right positioner simultaneously. It is placed flat on the workshop floor and fixed by anchor bolts.

[0018] Before performing the trimming operation on the housing part, it needs to be sleeved on the housing part loading portion. Then, the pushing and pressing portion starts to act to perform a translational motion towards the housing part loading portion until the final pressing and positioning of the housing part are completed. Exactly corresponding to the positioning position of the housing part, a process avoidance notch is provided on the bearing flat plate for the milling cutter of the milling equipment to freely pass through and can continuously complete the feed motion. During the process of performing the trimming operation on the housing part, the left positioner and the right positioner rotate synchronously, the housing part performs a following rotational motion, and the milling cutter performs actions according to the set trajectory to ensure that the cutting action is continuous.

[0019] In practical applications, the trimming auxiliary tooling for the housing part has at least achieved the following beneficial technical effects:

[0020] 1) The housing part only needs to go through one clamping operation to complete the trimming operation, avoiding the occurrence of positioning error caused by multiple repeated clampings, which is easy for workers to operate. Moreover, the cutting action of the milling cutter remains continuous throughout the machining process, and its waiting time is extremely short. In this way, not only the requirements for the quality of the operating workers are reduced, but also the machining efficiency is greatly improved, and the total single-piece machining time (clamping time + feed time + unloading time) is controlled within 3 minutes.

[0021] 2) Since the housing part is sleeved on the housing part loading portion and remains in the state of being pressed tightly by the pushing and pressing portion, the lateral pressing force is transmitted to the housing part loading portion through the housing part, so that the side walls of the housing part remain in an unloaded state or a state of force balance, effectively avoiding the occurrence of the phenomenon that the housing part is crushed due to excessive pressing force.

[0022] 3) On the premise of taking into account the operation difficulty and processing efficiency, the cut edges formed on the side walls of the shell part after trimming maintain good alignment, effectively ensuring that the shell part has extremely high trimming accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 is a three-dimensional schematic diagram of the shell part in the untrimmed state in the present invention (untrimmed state).

[0025] Figure 2 is a three-dimensional schematic diagram of the shell part in a completed trimming state from one perspective in the present invention.

[0026] Figure 3 is a three-dimensional schematic diagram of the shell part in a completed trimming state from another perspective in the present invention.

[0027] Figure 4 is a three-dimensional schematic diagram of the shell part assembled into the earphone case body state in the present invention.

[0028] Figure 5 is a three-dimensional schematic diagram of the first embodiment of the trimming auxiliary tool for the shell part in the present invention in the actual application state (when the shell part has been clamped in place).

[0029] Figure 6 is a three-dimensional schematic diagram of the first embodiment of the trimming auxiliary tool for the shell part in the present invention.

[0030] Figure 7 is a three-dimensional schematic diagram of one perspective of the shell part loading portion in the first embodiment of the trimming auxiliary tool for the shell part in the present invention.

[0031] Figure 8 is a three-dimensional schematic diagram of another perspective of the shell part loading portion in the first embodiment of the trimming auxiliary tool for the shell part in the present invention.

[0032] Figure 9 is Figure 7 the top view of.

[0033] Figure 10 is Figure 9 the A-A cross-sectional view of.

[0034] Figure 11 is Figure 7 the front view of.

[0035] Figure 12 is Figure 11 the B - B sectional view.

[0036] Figure 13 It is also a perspective three - dimensional schematic diagram of the load - bearing part of the housing part in the first embodiment of the trimming auxiliary tooling for the housing part of the present invention (with the upper split part hidden).

[0037] Figure 14 It is a three - dimensional schematic diagram of the lower split part in the first embodiment of the trimming auxiliary tooling for the housing part of the present invention.

[0038] Figure 15 It is a three - dimensional schematic diagram of the upper split part in the first embodiment of the trimming auxiliary tooling for the housing part of the present invention.

[0039] Figure 16 It is a three - dimensional schematic diagram of the wedge block in the first embodiment of the trimming auxiliary tooling for the housing part of the present invention.

[0040] Figure 17 It is a three - dimensional schematic diagram of the front split part in the first embodiment of the trimming auxiliary tooling for the housing part of the present invention.

[0041] Figure 18 It is a perspective three - dimensional schematic diagram of the pushing and pressing part in the first embodiment of the trimming auxiliary tooling for the housing part of the present invention.

[0042] Figure 19 It is another perspective three - dimensional schematic diagram of the pushing and pressing part in the first embodiment of the trimming auxiliary tooling for the housing part of the present invention.

[0043] Figure 20 It is a three - dimensional schematic diagram of the second embodiment of the trimming auxiliary tooling for the housing part in the present invention.

[0044] Figure 21 It is a three - dimensional schematic diagram of the material - supporting part in the second embodiment of the trimming auxiliary tooling for the housing part of the present invention.

[0045] 1-left positioner; 2-right positioner; 3-carrying plate; 31-avoidance gap; 4-shell part burden part; 41-lower split part; 411-lower sliding surface; 42-upper split part; 421-mounting through hole; 43-contact surface set; 44-inclined wedge push mechanism; 441-wedge block; 4411-upper sliding surface; 442-first cylinder; 45-front split part; 46-second cylinder; 5-push-up pressing part; 51-support seat; 52-third cylinder; 53-push-up composite plate; 531-metal plate; 532-plastic layer; 5321-profile cavity; 54-guide unit; 541-front slide rail; 542-rear slide rail; 543-front slider; 544-rear slider; 6-mounting base plate; 7-supporting part; 71-front supporting section; 711-front supporting block; 712-fourth cylinder; 72-rear supporting section; 721-rear supporting block; 722-fifth cylinder. DETAILED DESCRIPTION

[0046] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "left", "right", "up", "down", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0047] In order to enable those skilled in the art to more fully understand the technical solution disclosed in the present invention, before explaining the design structure of the shell part trimming auxiliary tooling, it is necessary to briefly introduce the shell parts here. Here, the box body of the Bluetooth headset box is taken as an example for explanation. As described in the above background technology, the Bluetooth headset box is composed of a box body, a box cover and a hinge. The hinge is used to connect the box body and the box cover, and the box cover can freely perform a flipping movement when it is subjected to a lifting force, so as to facilitate the operation of taking / placing the Bluetooth headset. The box body is generally a shell-type part, most of which are prepared by injection molding or die-casting, and after molding, it is necessary to perform trimming processing to eliminate the burrs and defects generated in the injection molding or die-casting process near its port area or to make its final molding size meet the requirements of the design blueprint (such as Figures 1-4 ).

[0048] The shell part trimming auxiliary tooling is used in conjunction with the milling equipment to perform trimming operations on the open end of the shell part. The following is a further detailed description of the contents disclosed in the present invention in conjunction with specific embodiments. Figure 5 , Figure 6Stereo schematic diagrams of the first embodiment of the trimming auxiliary tooling for the housing part in the present invention in different application states are respectively shown. It can be seen that it mainly consists of a left positioner 1, a right positioner 2, a bearing flat plate 3, a housing part bearing portion 4, a pushing and pressing portion 5, and a mounting substrate 6, etc. Among them, the mounting substrate 6 is placed flat on the workshop floor and fixed by anchor bolts. It is used to support the left positioner 1 and the right positioner 2 simultaneously. The left positioner 1 and the right positioner 2 are arranged oppositely along the left-right direction. The bearing flat plate 3 is kept in a horizontal state and is jointly borne by the left positioner 1 and the right positioner 2. When the left positioner 1 and the right positioner 2 are started synchronously, it can perform a following circumferential rotational movement. The housing part bearing portion 4 for temporarily bearing the housing part and the pushing and pressing portion 5 for pushing and pressing the housing part are both borne by the bearing flat plate 3 and are arranged oppositely along the left-right direction. Exactly corresponding to the positioning position of the housing part, a process avoidance notch 31 is provided on the bearing flat plate 3 for the milling cutter of the milling equipment to freely pass through and can complete the feed movement continuously. When the housing part to be trimmed is initially positioned relative to the housing part bearing portion 4, the pushing and pressing portion 5 acts to realize the lateral pressing operation on the housing part.

[0049] Before performing the trimming operation on the housing part, it needs to be sleeved on the housing part bearing portion 4. Then, the pushing and pressing portion 5 starts to act and performs a translational movement towards the housing part bearing portion 4 until the final pressing and positioning of the housing part are completed. Exactly corresponding to the positioning position of the housing part, a process avoidance notch 31 is provided on the bearing flat plate 3 for the milling cutter of the milling equipment to freely pass through and can complete the feed movement continuously. During the process of performing the trimming operation on the housing part, the left positioner 1 and the right positioner 2 rotate synchronously, the housing part performs a following rotational movement, and the milling cutter performs actions according to the set trajectory to ensure that the cutting action is continuous.

[0050] In practical applications, the trimming auxiliary tooling for the housing part has at least achieved the following beneficial technical effects:

[0051] 1) The housing part only needs to go through one clamping operation to complete the trimming operation, avoiding the occurrence of positioning error phenomena caused by repeated clamping multiple times, being easy for workers to operate, and the cutting action of the milling cutter always remaining continuous during the entire processing process, with an extremely short waiting time. In this way, not only the requirements for the quality of the operating workers are reduced, but also the processing efficiency is greatly improved, and the total single-piece processing time (clamping time + feed time + unloading time) is controlled within 3 minutes;

[0052] 2) Since the housing part is sleeved on the housing part bearing portion 4 and is held in a state of being tightly pressed by the pushed and pressed portion 5, the lateral pressing force is transmitted to the housing part bearing portion 4 via the housing part, so that the side walls of the housing part always remain in an unloaded state or a state of force balance, thus effectively avoiding the occurrence of the phenomenon that the housing part is crushed due to excessive pressing force.

[0053] 3) On the premise of taking into account the operation difficulty and processing efficiency, the cut edges formed by the side walls of the housing part after trimming have good alignment, effectively ensuring that the housing part has extremely high trimming accuracy.

[0054] It is known that the housing part bearing portion 4 can adopt various design structures to meet the stable sleeving operation of the housing part. However, a preferred implementation scheme with a simple design structure, easy to manufacture and implement, and convenient for subsequent maintenance operations is recommended as follows: The housing part bearing portion 4 is a carrier, which is integrally formed by casting or die-casting processes. The carrier is detachably fixed on the carrier plate 3, and a profiling section adapted to the inner cavity of the housing part is formed at its free end during the casting or die-casting forming stage. In this way, on the one hand, accurate positioning of the housing part can be effectively achieved only by unilateral pressing, and the operation is extremely simple and time-saving, laying a good foundation for ensuring the subsequent trimming accuracy; on the other hand, when the housing part is subjected to the lateral pushing force from the pushed and pressed portion 5, the profiling section plays an auxiliary supporting role. In this way, on the premise of ensuring that the housing part is stably clamped, the occurrence of the phenomenon that the left side wall of the housing part is crushed due to excessive pressure can be effectively avoided.

[0055] However, due to the application of the carrier, there are the following problems in the actual processing operation process: 1) Considering ensuring good positioning accuracy after the housing part is clamped, there must be a high requirement for the shape consistency of the profiling section. In this way, it will inevitably increase the sleeving difficulty and time consumption of the workers; 2) Due to the too small sleeving gap, the inner side wall of the housing part is extremely easy to be worn due to friction, and a large amount of manpower and material resources need to be invested in subsequent repair operations. In view of this, a preferred implementation scheme is recommended as follows: As shown in Figure 7 、 8 shown, the housing part bearing portion 4 is preferably a split design structure, which includes a lower split part 41 and an upper split part 42. The lower split part 41 is detachably fixed on the carrier plate 3. After the upper split part 42 is positioned relative to the lower split part 41, a profiling surface set 43 adapted to the inner cavity of the housing part is jointly formed. Figure 14 、 Figure 15The three-dimensional schematic diagrams of the lower split part and the upper split part in the shell part trimming auxiliary tooling of the present invention are respectively shown. In this way, when the shell part is put into place relative to the shell part burden portion 4, its inner wall can be touched by the contoured curved surface set 43 formed by the upper split part 42 and the lower split part 41. The upper split part 42 is detachably connected to the lower split part 41 by means of screws. Correspondingly, a series of mounting through holes 421 (such as 421) that are compatible with the above-mentioned screws and penetrate along the up-down direction are formed on the upper split part 42 near its right side wall. Figure 15 ). Both the upper split part 42 and the lower split part 41 are non-rigid parts, preferably made of injection molding of engineering plastics. When the bottom wall of the upper split part 42 is subjected to an upward push force, it performs an expansion movement opposite to the lower split part 41, and at the same time, the contoured curved surface set 43 expands adaptively along the up-down direction until it achieves pressure contact with the inner wall of the shell part; when the bottom wall of the upper split part 42 is subjected to an elastic restoring force, it performs a contraction movement toward the lower split part 41, and at the same time, the contoured curved surface set 43 shrinks adaptively along the up-down direction until the pressure contact with the inner wall of the shell part is released. By adopting the above technical solution, before the formal assembly operation is performed, the lower split piece 41 and the upper split piece 42 are kept in a close contact state. At this time, the volume of the contoured surface set 43 is the smallest, which is conducive to the worker to quickly fit the shell part on the shell part bearing part 4. Then, an upward pushing force is applied to the bottom wall of the upper split piece 42, and the upper split piece 42 undergoes elastic deformation due to the force, and its free end undergoes an adaptive upward warping action, and the shape of the contoured surface set 43 is expanded to achieve the inner and outer shell parts. The stable contact of the side wall and the subsequent pushing force from the pushing and pressing part 5 enable the shell parts to be clamped reliably, stably and accurately; then, the milling equipment is used to complete the trimming operation on the shell part port, and then the upward push on the upper split part 42 is released, the elastic potential energy stored in the upper split part 42 is released, and its upturned free end is reset, and the shape of the contoured surface collection 43 is reduced, which is conducive to the worker to quickly and non-destructively remove the shell parts that have been trimmed from the shell part bearing part 4.

[0056] It should also be noted that, because the contoured curved surface set 43 expands or contracts according to the adaptability of the shape of the inner cavity of the shell part, the shell part bearing part 4 can be simultaneously applicable to shell parts of the same series and different sizes, which means that the scope of application of the shell part bearing part 4 is effectively expanded. Furthermore, because the shell part bearing part 4 adopts a split design structure, when the model and specification of the shell part to be trimmed changes, it is convenient to perform a redesign on the shell part bearing part 4, and only the lower split part 41 and / or the upper split part 42 need to be replaced according to the actual situation.

[0057] As is known, according to design common sense, a variety of methods can be adopted to achieve the push-up of the upper split part 42. However, here we recommend an implementation scheme that is simple in design structure, easy to manufacture and implement, and convenient for real-time adjustment of the push-up force. Specifically, the shell part bearing part 4 is further provided with an inclined wedge push-up mechanism 44. Figure 9 , 10 As shown in FIG. 13 , the inclined wedge push mechanism 44 is used to provide an upward push force for the bottom wall of the upper split member 42, and includes a wedge block 441 and a first cylinder 442. The bottom wall of the wedge block 441 is beveled to form an upper sliding surface 4411 (such as Figure 16 Correspondingly, the top wall of the lower split part 41 is chamfered to form a lower sliding surface 411 (as shown in Figure 14 As shown in ). The first cylinder 442 is supported by the lower split part 41 and / or the upper split part 42; by adopting the above technical solution, when the shell part is installed in place relative to the shell part supporting part 4, the first cylinder 442 is immediately started, and the wedge block 441 performs a translational movement from right to left. At the same time, the upper sliding surface 4411 performs a side sliding movement relative to the lower sliding surface 411, and the upper split part 42 performs a deflection movement opposite to the lower split part 41 (the angle formed between the two gradually increases), and the contoured surface set 43 is expanded until the shell is The body part is stably positioned; and when the trimming operation of the shell part is completed, the first cylinder 442 is started in reverse, and the wedge block 441 performs a translational retreat movement from left to right. At the same time, the upper sliding surface 4411 performs a reverse lateral sliding movement relative to the lower sliding surface 411, and the upper split part 42 performs an oblique reset movement toward the lower split part 41 (the angle formed between the two gradually becomes smaller), and the contoured surface set 43 is shrunk until the limit on the shell part is released, which is conducive to the subsequent rapid release of the shell part from the shell part bearing part 4.

[0058] The implementation of the above technical solution effectively realizes the adaptive positioning of the shell part along the width of its port, but does not involve the adaptive positioning of the port width along its length. As a result, the clamping stability of the shell part is insufficient. When it is subjected to the cutting force, it is very easy to change its position along the direction of its port, which will make it difficult to ensure the subsequent trimming accuracy. In view of this, as a further optimization of the above technical solution, Figure 7 , 8 As shown in , 11 and 12, the housing component bearing portion 4 is further provided with a front split part 45 and a second cylinder 46. Figure 17The three-dimensional schematic diagram of the front splitting part in the trimming auxiliary tooling for the housing part of the present invention is shown. The front splitting part 45 cooperates with the lower splitting part 41 and the upper splitting part 42 to form the profiling surface set 43 adapted to the inner cavity of the housing part. The second cylinder 46 is borne by the lower splitting part 41. In this way, during the trimming process of the housing part, when the housing part is in place relative to the housing part bearing portion 4, the first cylinder 442 is immediately started, the wedge block 441 performs a translational movement along the direction from right to left, the upper sliding surface 4411 performs a side-sliding movement relative to the lower sliding surface 411, and the upper splitting part 42 performs a deflecting movement away from the lower splitting part 41 (the included angle formed between the two gradually increases). At the same time, the second cylinder 46 is also started synchronously, and the front splitting part 45 performs an extending movement under the thrust of the piston rod, and the profiling surface set 43 expands until the housing part is stably positioned in all directions (reliably positioned in both the width direction and the length direction of the port); and when the trimming operation of the housing part is completed, the first cylinder 442 is started in the reverse direction, the wedge block 441 performs a translational retraction movement along the direction from left to right, the upper sliding surface 4411 performs a reverse side-sliding movement relative to the lower sliding surface 411, and the upper splitting part 42 performs a deflecting reset movement towards the lower splitting part 41 (the included angle formed between the two gradually decreases). At the same time, the second cylinder 46 is also started synchronously, and the front splitting part 45 performs a retracting movement under the pulling force of the piston rod, and the profiling surface set 43 contracts until the limit on the housing part is released, which is beneficial for the subsequent rapid removal of the housing part from the housing part bearing portion 4.

[0059] It should be noted here that other means can also be adopted to achieve the adaptive expansion or contraction design of the profiling surface set 43. For example, the upper dissection part 42 is also detachably connected to the lower dissection part 41 by screws. However, after the connection is completed, it is ensured that the upper dissection part 42 has a certain degree of displacement freedom in the up and down direction (that is, the screws are kept in an incompletely tightened state, and the screwing end of the screws is set at a certain distance away from the upper dissection part 42). In this way, during the edge trimming process of the housing part, when the housing part is in place relative to the housing part bearing part 4, the first cylinder 442 is immediately started, and the upper dissection part 42 moves away from the lower dissection part 41. The upper dissection part 42 and the lower dissection part 41 are separated. At the same time, the second cylinder 46 is also started synchronously. The front dissection part 45 extends under the thrust of the piston rod, and the profiling surface set 43 expands until the housing part is stably positioned in all directions. When the edge trimming operation of the housing part is completed, the first cylinder 442 is started in the reverse direction. The upper dissection part 42 loses the downward pushing force and falls on the lower dissection part 41 under the action of its own gravity. At the same time, the second cylinder 46 is also started synchronously. The front dissection part 45 retracts under the pulling force of the piston rod, and the profiling surface set 43 contracts, that is, the limit on the housing part is relaxed, which is beneficial for the subsequent rapid removal of the housing part from the housing part bearing part 4.

[0060] It is known that according to design common sense, various methods can be adopted to push the upper dissection part 42. However, a design solution with a simple structure, easy to manufacture and implement, and easy to perform later maintenance operations is recommended here. Specifically as follows: As Figure 18 、 19 shown, the pushing and pressing part 5 preferably consists of a support seat 51, a third cylinder 52, a pushing composite plate 53, etc. Among them, the support seat 51 is used to bear and fixedly install the third cylinder 52, and it is detachably fixed on the bearing flat plate 3. And considering the aspect of avoiding the phenomenon that the housing part is damaged due to the action of rigid extrusion force, the pushing composite plate 53 is preferably glued by a metal plate 531 and a relatively soft plastic layer 532. A profiling cavity 5321 adapted to the outer shape of the housing part is formed by the leftward depression of the right side wall of the plastic layer 532. The pushing composite plate 53 moves translationally towards / away from the housing part bearing part under the pushing force of the third cylinder 52 until the elastic pressing of the left end of the housing part is achieved / relieved.

[0061] Figure 20A three-dimensional schematic diagram of the second embodiment of the trimming auxiliary tooling for the housing part in the present invention is shown. It can be seen that the difference from the above first embodiment lies in that: the trimming auxiliary tooling for the housing part is additionally provided with a material supporting part 7. The material supporting part 7 is borne by the bearing flat plate 3, and it includes a front material supporting sub-part 71 and a rear material supporting sub-part 72 linearly arranged in its front-back direction. During the process of performing trimming operation on the housing part, the front material supporting sub-part 71 and the rear material supporting sub-part 72 cooperate to apply a pressing force to the non-trimming area of the housing part.

[0062] As Figure 21 shown in the figure, the front material supporting sub-part 71 includes a front material supporting block 711 and a fourth cylinder 712. And the rear material supporting sub-part 72 includes a rear material supporting block 721 and a fifth cylinder 722. The fourth cylinder 712 and the fifth cylinder 722 are detachably fixed on the bearing flat plate 3, and both of them pass through the process avoidance notch 31. The front material supporting block 711 moves towards / away from the housing part under the driving force of the fourth cylinder 712 to achieve / relieve the pressing against the housing part; the rear material supporting block 721 moves towards / away from the housing part under the driving force of the fifth cylinder 722 to achieve / relieve the pressing against the housing part. In this way, during the trimming process, the cut annular waste material is always in contact with the lower sub-part 41 under the action of the pressing forces of the front material supporting block 711 and the rear material supporting block 721, avoiding the occurrence of the phenomenon that the normal movement of the milling cutter is affected due to the irregular shaking or orientation change of the annular waste material, and ensuring that the housing part can be trimmed correctly and precisely. When the trimming of the housing part is completed, the worker takes off the housing part from the housing part bearing part 4, and then removes the annular waste material.

[0063] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An edge trimming auxiliary tooling for a housing part, which is applied in matching with a milling edge device to perform edge trimming operation on the open end of the housing part, and is characterized in that, It includes a left-positioned displacer, a right-positioned displacer, a load-bearing flat plate, a housing part loading portion, and a pushing and pressing portion; the left-positioned displacer and the right-positioned displacer are arranged opposite to each other; the load-bearing flat plate is jointly loaded by the left-positioned displacer and the right-positioned displacer, and when the left-positioned displacer and the right-positioned displacer are started synchronously, it can perform a following circumferential rotational movement; The housing part loading portion for temporarily loading the housing part and the pushing and pressing portion for pushing and pressing the housing part are both loaded by the load-bearing flat plate, and they are arranged opposite to each other along the left-right direction; exactly corresponding to the positioning position of the housing part, a process avoidance notch is provided on the load-bearing flat plate for the milling cutter of the milling equipment to freely pass through and to continuously complete the feed movement; when the housing part to be trimmed is preliminarily positioned relative to the housing part loading portion, the pushing and pressing portion acts to realize the lateral pressing operation on the housing part.

2. The edge trimming auxiliary tooling for a housing part according to claim 1, and is characterized in that, The housing part loading portion includes a carrier; the carrier is detachably fixed on the load-bearing flat plate, and a profiling section adapted to the inner cavity of the housing part is formed thereon.

3. The edge trimming auxiliary tooling for a housing part according to claim 1, and is characterized in that, The housing part loading portion is of a split structure, and it includes a lower split part and an upper split part; the lower split part is detachably fixed on the load-bearing flat plate; when the upper split part is positioned relative to the lower split part, a profiling curved surface set adapted to the inner cavity of the housing part is jointly formed.

4. The edge trimming auxiliary tooling for a housing part according to claim 3, and is characterized in that, The upper split part is detachably connected to the lower split part by screws. Correspondingly, a series of mounting through holes adapted to the screws and penetrating along the up-down direction are formed on the upper split part adjacent to its right side wall position.

5. The edge trimming auxiliary tooling for a housing part according to claim 4, and is characterized in that, Both the upper split part and the lower split part are non-rigid parts; when an upward pushing force acts on the bottom wall of the upper split part, it performs an expanding movement away from the lower split part. At the same time, the profiling curved surface set expands adaptively along the up-down direction until it touches the inner wall of the housing part; when an elastic restoring force acts on the bottom wall of the upper split part, it performs a contracting movement towards the lower split part. At the same time, the profiling curved surface set contracts adaptively along the up-down direction until the contact with the inner wall of the housing part is released.

6. The edge trimming auxiliary tooling for a housing part according to claim 5, and is characterized in that, The housing part loading portion further includes a wedge pushing mechanism; the wedge pushing mechanism is used to provide an upward pushing force for the bottom wall of the upper split part, and it includes a wedge block and a first linear motion element; The bottom wall of the wedge block is beveled to form an upper sliding surface. Correspondingly, the top wall of the lower dissection part is beveled to form a lower sliding surface that is applied in cooperation with the upper sliding surface. The first linear motion element is borne by the lower dissection part or / and the upper dissection part. After the first linear motion element is activated, the wedge block performs a translational motion in the direction from right to left. At the same time, the upper sliding surface performs a side-sliding motion relative to the lower sliding surface, and the upper dissection part performs an expansion motion away from the lower dissection part. When the first linear motion element is activated in the reverse direction, the wedge block performs a translational retraction motion in the direction from left to right. At the same time, the upper sliding surface performs a reverse side-sliding motion relative to the lower sliding surface, and the upper dissection part performs a contraction motion towards the lower dissection part.

7. The edge trimming auxiliary tooling for a housing part according to claim 6, and is characterized in that, The housing part bearing portion includes a front dissection part and a second linear motion element. The front dissection part and the lower dissection part and the upper dissection part cooperate with each other to form the set of profiling surfaces that are adapted to the inner cavity of the housing part. The second linear motion element is borne by the lower dissection part. After the second linear motion element is activated, the front dissection part performs a translational motion in the front-back direction towards / away from the lower dissection part and the upper dissection part until it touches / releases the inner wall of the housing part.

8. The edge trimming auxiliary tooling for a housing part according to any one of claims 1-7, and is characterized in that, The pushing and pressing portion includes a support seat, a third linear motion element, and a pushing composite plate. The support seat is used to bear the third linear motion element and is detachably fixed to the carrying flat plate. An indentation is formed on the right side wall of the pushing composite plate towards the left to form a profiling cavity that is adapted to the outer shape of the housing part. The pushing composite plate performs a translational motion towards / away from the housing part bearing portion under the driving force of the third linear motion element until it touches / releases the left end of the housing part.

9. The edge trimming auxiliary tooling for a housing part according to claim 8, and is characterized in that, The pushing composite plate is formed by gluing a metal plate and a plastic layer. The profiling cavity is formed on the plastic layer.

10. The edge trimming auxiliary tooling for a housing part according to any one of claims 1-7, and is characterized in that, It further includes a material supporting portion. The material supporting portion is borne by the carrying flat plate and applies a pressing force to the non-trimmed area of the housing part.

11. The edge trimming auxiliary tooling for a housing part according to claim 10, and is characterized in that, The material supporting portion includes a front material supporting sub-portion and a rear material supporting sub-portion that are linearly arranged in the front-back direction.

12. The edge trimming auxiliary tooling for a housing part according to claim 11, and is characterized in that, The front material supporting sub-portion includes a front material supporting block and a fourth linear motion element. The rear material supporting sub-portion includes a rear material supporting block and a fifth linear motion element. The fourth linear motion element and the fifth linear motion element are both detachably fixed to the carrying flat plate and both pass through the process avoidance notch. The front material supporting block performs a displacement motion towards / away from the housing part under the driving force of the fourth linear motion element to touch / releases the housing part. The rear material supporting block performs a displacement motion towards / away from the housing part under the driving force of the fifth linear motion element to touch / releases the housing part.

13. The edge trimming auxiliary tooling for a housing part according to any one of claims 1-7, and is characterized in that, It further includes an installation substrate; the installation substrate is used to support the left displacement machine and the right displacement machine simultaneously, is placed flat on the workshop floor, and is fixed by anchor bolts.

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