A vertical broaching machine

Abstract

The present invention relates to the field of broaching and forming, and specifically to a vertical broaching machine. It includes a limiting unit for limiting the position of a workpiece, and an upper pulling unit and a lower pulling unit are respectively provided on the upper and lower sides of the limiting unit, and the upper pulling unit and the lower pulling unit are symmetrically arranged along the limiting unit, and the limiting unit can slide along the radial direction of the broach, and a through channel aligned with the broach is provided on the limiting unit; the upper pulling unit and the lower pulling unit both include a clamping assembly and a driving member, and the clamping assembly includes a base, a clamping member and a pushing member, and the clamping member includes a clamping block slidably connected to the base and a spring for sliding the clamping block away from the broach, and the pushing member is used to push the clamping block toward the side close to the broach; the driving member is used to drive the base to slide vertically. The vertical broaching machine in the present invention can simultaneously put in the workpiece when the broach is reset to improve the processing efficiency.

Description

Technical Field

[0001] The invention relates to the field of broaching and forming, and in particular to a vertical broaching machine. Background Art

[0002] A broach is a forming tool used for broaching. There are multiple rows of teeth on the surface of the broach. The size and shape of each row of teeth increase and change from the cutting end to the cutting end. When the broach is broaching, each tooth cuts a certain thickness of metal from the workpiece, and finally obtains the required size and shape. Broaches are often used in batch and mass production to process round holes, spline holes, keyways, planes and formed surfaces, etc., with high productivity.

[0003] During the operation of the current broaching machine, the workpiece is first placed on the broaching machine, and then one end of the broach is passed through the hole on the workpiece. The end of the broach is then fixed to the driving mechanism, so that the driving mechanism drives the broach to move relative to the workpiece to process the workpiece. Finally, the processing is completed after the broach completely passes through the workpiece. However, in order to process the next workpiece, the broach needs to be reset at this time, but the processed workpiece at this time will hinder the reset of the broach. Therefore, it is usually necessary to remove the processed workpiece first, then reset the broach, and then put in the next workpiece to be processed. However, the speed of broach reset is limited. It takes a certain amount of time to remove the processed workpiece, reset the broach, and put in the next workpiece to be processed, which will reduce the processing efficiency. Summary of the invention

[0004] The present invention aims to provide a vertical broaching machine capable of placing a workpiece simultaneously when a broach is reset, so as to improve processing efficiency.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a vertical broaching machine, comprising a limiting unit for limiting the workpiece, an upper pulling unit and a lower pulling unit are respectively provided on the upper and lower sides of the limiting unit, and the upper pulling unit and the lower pulling unit are symmetrically arranged along the limiting unit, the limiting unit can slide along the radial direction of the broach, and a through channel aligned with the broach is provided on the limiting unit; the upper pulling unit and the lower pulling unit both include a clamping assembly and a processing drive member, the clamping assembly includes a base, a clamping member and a pushing member, the clamping member includes a clamping block slidably connected to the base and a spring for making the clamping block slide to the side away from the broach, and the pushing member is used to push the clamping block to the side close to the broach; the processing drive member is used to drive the base to slide vertically.

[0006] The beneficial effects of this program are:

[0007] 1. After the broach in this scheme completes processing of the workpiece and completely passes through the workpiece, the lower limit piece is first moved horizontally to move the lower limit piece and the workpiece to the side of the broach. Then the broach can be controlled to reset and the processed workpiece can be removed at the same time, and the next workpiece to be processed can be placed on the lower limit piece. That is, the broach can be reset and the workpiece can be replaced at the same time, which effectively improves the processing efficiency.

[0008] 2. In this solution, when the broach needs to be clamped, it only needs to start the pushing member to automatically clamp the broach; when the broach needs to be loosened, since the clamping block is connected to a spring, when the pushing member loosens the clamping block, the spring can automatically reset the clamping block, and there is no need to manually move the position of the clamping block, so the operation is simpler.

[0009] 3. The upper pulling unit and the lower pulling unit provided in this scheme can respectively drive the lower end of the broach to move upward to the top of the workpiece and the lower end of the broach to move below the workpiece, so that the broach can penetrate the workpiece, which is convenient for processing the workpiece. At the same time, after the processing is completed, the broach will not hinder the removal of the processed workpiece and the clamping of the next part to be processed, and the operation is more convenient.

[0010] Furthermore, the limiting unit includes a lower limiting member and an upper limiting member located between the upper pulling unit and the lower limiting member. The lower limiting member includes a lower limiting plate and a slider, which is located on the lower limiting plate through a channel, and the slider is fixedly connected to the lower limiting plate.

[0011] The beneficial effect of this solution is that when the upper limit member and the lower limit member are brought close to each other, the upper limit member and the lower limit member clamp the workpiece from both sides of the workpiece respectively, thereby preventing the workpiece from sliding and achieving rapid clamping of the workpiece.

[0012] Furthermore, a slide rail is transversely arranged on the lower limit plate, and the slider is slidably connected to the slide rail.

[0013] The beneficial effect of this solution is that the slide rail in this solution can guide the sliding of the lower limit member, thereby preventing the lower limit member from shifting during the sliding process, causing the lower limit member to be unable to reset, making it impossible for the workpiece to be aligned with the broach.

[0014] Furthermore, the lower limit member is connected to a sliding member for driving the lower limit plate to slide along the slide rail.

[0015] The beneficial effect of this solution is that the lower limit member can be driven to slide by the sliding member, without the need for manual sliding, thus reducing the workload of workers.

[0016] Furthermore, the lower limit member is slidably connected to a support plate, the support plate is provided with a processing channel aligned with the connecting channel, and the support plate is connected to a clamping drive member for pushing the support plate to slide vertically.

[0017] The beneficial effects of this solution are as follows: this solution drives the lower limit member to slide by pushing the support plate, the lower support plate can provide installation space for the lateral sliding of the lower limit member, and the lower support plate does not need to slide lateraly, so it is convenient to connect with the clamping member.

[0018] Furthermore, a through slot is provided on the clamping block, the spring is located in the through slot, and a baffle is slidably connected in the through slot, and both ends of the spring are respectively fixed on the baffle and the side wall of the through slot; the clamping assembly also includes a limiting member for limiting the baffle.

[0019] The beneficial effect of this solution is that the end of the baffle is blocked by the limiter, so the position of the baffle does not change during the process of the spring deforming and restoring its original shape, so the spring drives the clamping block to reset by moving the end away from the baffle, so even if the spring in this solution is located in the through slot, it will not affect the work of the spring. Compared with setting the spring outside the clamping block, the structure in this solution is more compact, and the spring is located in the through slot, and the side wall of the through slot can also limit the spring to prevent the spring from bending, ensuring that the spring always expands and contracts along the length direction.

[0020] Furthermore, a ring-shaped locking accessory is rotatably connected to the base, and a side wall of the locking accessory facing the clamping block is provided with an inclined surface that can push the clamping block toward the side close to the broach, and a pushing member is connected to the locking accessory and is used to drive the locking accessory to rotate.

[0021] The beneficial effects of the present scheme are as follows: when the locking accessory in the present scheme rotates, the inclined surface slides relative to the clamping block, pushing the clamping block toward the side close to the broach. Compared with directly connecting the pushing member to the clamping block, in the present scheme, since the locking accessory is annular, multiple clamping blocks can be pushed at the same time. When multiple clamping blocks are set, one pushing member can be used to push multiple clamping blocks, which is easier to operate and has a simpler structure. In addition, setting multiple clamping blocks can also increase the fixing effect on the broach.

[0022] Furthermore, a support platform is provided on the side of the base away from the limiting unit, and the processing drive is detachably connected to the support platform and can push the support platform to slide vertically; the vertical cross-section of the locking accessory is an inverted L-shape, and the locking accessory cover is provided on the base.

[0023] The beneficial effect of this solution is that the locking accessory cover in this solution can position the base after being arranged on the base, thereby preventing the base from shifting during use.

[0024] Furthermore, a pressure plate is provided between the limiting member and the locking accessory, and the vertical projections of one end of the pressure plate away from the broach and one end of the pressure plate close to the broach are respectively located on the locking accessory and the limiting member.

[0025] The beneficial effect of this solution is that the limiting member in this solution is pressed on the pressure plate, and the pressure plate is pressed on the locking accessory, so that the limiting member can limit the locking accessory at the same time, and there is no need to set up an additional limiting structure on the side of the locking accessory away from the base, making the overall structure simpler.

[0026] Furthermore, a deburring unit is provided below the upper pulling unit, and the deburring unit includes a cleaning brush and a rotating driving member for driving the cleaning brush to rotate.

[0027] The beneficial effect of this solution is that after the broach processes the workpiece, burrs will remain on the broach. The cleaning brush in this solution can rotate along the broach to remove the burrs on the surface of the broach, thereby avoiding excessive burrs remaining on the broach, which would scratch the next workpiece when the next workpiece is processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic diagram of embodiment 1 of the present invention;

[0029] Figure 2 for Figure 1 A three-dimensional schematic diagram of the middle and lower pulling unit and the lower limit member;

[0030] Figure 3 for Figure 2 A three-dimensional schematic diagram of the middle and lower limit members;

[0031] Figure 4 This is a three-dimensional schematic diagram of the upper limit plate in Example 1 of the present invention;

[0032] Figure 5 for Figure 1 Exploded view of the middle and lower pull unit;

[0033] Figure 6 for Figure 5 A front vertical section view of

[0034] Figure 7 for Figure 6 A top view of the middle locking fitting;

[0035] Figure 8 It is a three-dimensional schematic diagram of the assembled lower pull-down unit in Embodiment 1 of the present invention;

[0036] Fig. 9 It is a three-dimensional schematic diagram of the lower pull unit and the lower limit member in Embodiment 2 of the present invention;

[0037] Fig.10 for Fig. 9 Exploded view of the cleaning unit. DETAILED DESCRIPTION

[0038] The following is further described in detail through specific implementation methods:

[0039] The figure marks in the drawings of the specification include: support plate 1, cylinder 12, guide rail 13, guide rod 14, screw 15, processing channel 16, slide rail 17, limit groove 18, lower limit plate 2, slider 21, limit block 22, lower positioning block 23, workpiece 3, broach 4, cleaning plate 5, upper limit plate 51, upper positioning block 52, cleaning channel 53, rotating drive member 54, cleaning brush 55, active synchronous pulley 56, driven synchronous pulley 57, synchronous belt 58, mounting block 59, base 6, first protrusion 61, second protrusion 62, second processing channel 63, guide groove 64, locking accessory 65, locking groove 66, connecting block 68, inclined surface 69, support platform 7, processing drive member 71, pushing member 72, pressure plate 8, limit member 81, third processing channel 82, clamping block 9, through groove 91, spring 92, baffle 93.

[0040] Example 1

[0041] A vertical broaching machine, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, it includes a frame, an upper pulling unit, a limiting unit and a lower pulling unit arranged on the frame from top to bottom. The limiting unit includes a lower limiting member 81 and an upper limiting member located above the lower limiting member, the lower limiting member includes a lower limiting plate 2 and a slider 21, a support plate 1 is arranged below the lower limiting plate 2, and four clamping driving members are arranged below the support plate 1. Specifically, the left and right side walls of the support plate 1 in this embodiment are vertically welded with guide rails 13, a guide rod 14 is arranged on the top of the support plate 1, the guide rod 14 is vertically arranged and the upper end of the guide rod 14 passes through the frame, and the guide rod 14 is fixed to the support plate 1 by bolts. Four lead screws 15 are provided below the support plate 1. The four lead screws 15 respectively pass through the four top corners of the support plate 1 and are threadedly connected to the support plate 1. The lead screws 15 in this embodiment form a ball screw pair with the support plate 1. The four clamping drive members are respectively connected to the lower ends of the four lead screws 15 through couplings. The clamping drive members are fixed to the frame by bolts. The clamping drive member in this embodiment adopts a stepping motor.

[0042] Two slide rails 17 are transversely arranged on the support plate 1. A groove is arranged at the top of the slide rail 17 along the length direction. The lower end of the bolt passes through the bottom of the groove and is threadedly connected to the support plate 1. The head of the bolt is located in the groove. The two slide rails 17 are both located below the lower limit plate 2 and are respectively located on the left and right sides of the lower limit plate 2. The slider 21 is fixed to the bottom of the lower limit plate 2 by bolts. The slider 21 is provided with a groove opening downward, and the upper end of the slide rail 17 is located in the groove. The side walls on the left and right sides of the slide rail 17 in this embodiment are provided with limit grooves 18. The limit grooves 18 extend along the length direction of the slide rail 17. The slider 21 is integrally formed with a limit block 22 facing the side wall of the limit groove 18. The limit block 22 is located in the limit groove 18, which limits the slider 21 and prevents the slider 21 from detaching from the slide rail 17 upward. A passing channel and a processing channel 16 are respectively provided on the lower limit plate 2 and the support plate 1. The passing channel and the processing channel 16 in this embodiment are aligned with the broach 4, and their diameters are larger than the outer diameter of the broach 4 at the widest part, ensuring that the broach 4 can pass through the passing channel and the processing channel 16.

[0043] Four lower positioning blocks 23 are welded on the top of the lower limit plate 2. Each lower positioning block 23 is provided with a V-shaped groove on the top. The V-shaped grooves on the four lower positioning blocks 23 are respectively aligned with the four ends of the cross-shaped workpiece 3 to position the workpiece 3 and prevent the workpiece 3 from lateral displacement.

[0044] A sliding member is fixed to the rear side of the support plate 1 by bolts. The sliding member in this embodiment is a cylinder 12, and the piston rod of the cylinder 12 is fixed to the rear end of the lower limit plate 2 through a flange to drive the lower limit plate 2 to slide forward and backward.

[0045] The upper limit positioning member includes an upper limit positioning plate 51 and four upper positioning blocks 52 welded to the bottom of the upper limit positioning plate 51. The upper limit positioning plate 51 is welded to the frame and is also provided with a processing channel 16 aligned with the broach 4. A V-shaped groove is also provided at the bottom of the upper positioning block 52. The four upper positioning blocks 52 in this embodiment are respectively aligned with the four lower positioning blocks 23. The aligned upper positioning blocks 52 are aligned with the V-shaped grooves on the lower positioning blocks 23, and the workpiece 3 is positioned from the upper and lower sides respectively to prevent the workpiece 3 from jumping upwards during movement and processing.

[0046] The upper pull unit is located above the upper limit plate 51, and the lower pull unit is located below the lower limit plate 2, and the upper pull unit and the lower pull unit are symmetrically arranged, and the upper side of the upper pull unit and the lower side of the lower pull unit are both provided with a support platform 7, and the upper pull unit and the lower pull unit are both installed on the support platform 7. The upper pull unit and the lower pull unit both include a clamping assembly and a processing drive member 71, and specifically, the lower pull unit is taken as an example for description in this embodiment.

[0047] The clamping assembly includes a base 6, a pusher 72 and three clamping members. The processing drive member 71 and the pusher 72 in this embodiment are both hydraulic cylinders. The processing drive member 71 is fixed to the frame by bolts, and the push rod of the processing drive member 71 faces upward and is fixed to the support platform 7 by bolts. The base 6 is located on the support platform 7, and a second processing channel 63 aligned with the first processing channel 16 is provided on the base 6. Three protrusions are provided at the top of the base 6 in this embodiment along the circumferential gap of the base 6. The three protrusions are evenly distributed along the circumference of the second processing channel 63 and are integrally formed with the base 6. The gaps between adjacent protrusions form guide grooves 64 extending along the radial direction of the base 6. The three protrusions all include a first protrusion 61 and a second protrusion 62 which are distributed in a step shape. The second protrusion 62 is located above the first protrusion 61. An annular locking accessory 65 is provided on the support platform 7, and the vertical cross-section of the locking accessory 65 is an inverted L-shape. The locking accessory 65 is covered on the edge of the base 6, and the top of the locking accessory 65 is at the same height as the top of the first protrusion 61, and the side wall of the locking accessory 65 is in contact with the side wall of the first protrusion 61 away from the broach 4. The outer wall of the locking accessory 65 is provided with a locking groove 66, and a connecting block 68 is welded in the locking groove 66. A strip hole is provided on the connecting block 68 along the length direction, and a positioning pin is vertically provided in the strip hole. The pushing member 72 is fixed to the supporting platform 7 by bolts, and the push rod of the pushing member 72 is connected with a U-shaped block. The upper and lower ends of the positioning pin respectively pass through the two ends of the U-shaped block, and both ends of the positioning pin are interference fit with a card block to limit the position of the positioning pin. When the push rod of the pushing member 72 is extended or retracted, the push rod of the pushing member 72 rotates relative to the connecting block 68, so that the positioning pin slides along the strip hole.

[0048] The clamping member includes a clamping block 9, a spring 92 and a baffle 93. The clamping block 9 in this embodiment is located in the guide groove 64, and the locking accessory 65 is provided with a slope 69 on the side wall facing the clamping block 9. Taking the slope 69 on the right side as an example, the distance between the upper end of the slope 69 and the clamping block 9 is smaller than the distance between the lower end and the clamping block 9. Therefore, when the locking accessory 65 rotates clockwise, the slope 69 pushes the clamping block 9 toward the side close to the second processing channel 63.

[0049] A through slot 91 is provided in the clamping block 9 along the radial direction of the locking fitting 65, a baffle 93 is vertically arranged, and the lower end of the baffle 93 and the spring 92 are both located in the through slot 91, and the spring 92 is located on the side of the baffle 93 away from the second processing channel 63, and the two ends of the spring 92 are respectively welded to the side walls of the baffle 93 and the through slot 91. The lower end of the baffle 93 passes through the through slot 91 and falls on the base 6, and the upper end of the baffle 93 is at the same height as the top of the second protrusion 62.

[0050] An annular pressure plate 8 is provided above the first protrusion 61, and the end of the pressure plate 8 away from the broach 4 falls on the top of the locking accessory 65. The side wall of the pressure plate 8 facing the broach 4 is in contact with the side wall of the second protrusion 62 away from the broach 4, and the top of the pressure plate 8 is at the same height as or lower than the height of the second protrusion 62. Specifically, the top of the pressure plate 8 in this embodiment is at the same height as the top of the second protrusion 62.

[0051] A stopper 81 is provided above the pressing plate 8. The stopper 81 in this embodiment is disc-shaped. A third processing channel 82 aligned with the second processing channel 63 is provided on the stopper 81. The side of the stopper 81 away from the third processing channel 82 falls on the pressing plate 8 to position the pressing plate 8 and prevent the pressing plate 8 from jumping upward. Five fixing holes are provided on the stopper 81, the second protrusion 62 and the base 6, and five threaded holes are provided on the support platform 7. The fixing holes on the stopper 81, the second protrusion 62 and the base 6 are all aligned with the threaded holes. During installation, the stopper 81, the pressing plate 8, the protrusion and the base 6 can be fixed by passing the bolts through the stopper 81, the second protrusion 62 and the fixing holes on the base 6 from top to bottom in sequence and screwing them into the threaded holes.

[0052] Three receiving grooves are evenly arranged on the limiting member 81 along the circumference of the third processing channel 82, and the three receiving grooves are respectively opposite to the three baffles 93. Specifically, the three receiving grooves in this embodiment vertically penetrate the limiting member 81, and the upper end of the baffle 93 is located in the receiving groove.

[0053] In actual implementation, six positioning columns are welded circumferentially on the top of the support platform 7, and positioning holes aligned with the positioning columns are provided on the second protrusion 62 of the base 6 and the pressure plate 8. During installation, the positioning columns are inserted into the positioning holes to quickly position the base 6 and the pressure plate 8.

[0054] The specific implementation process is as follows:

[0055] Initially, the lower limit plate 2 is located at the front side of the processing channel 16, the push rods of the processing drive member 71 and the push member 72 are both in a state of being retracted in the cylinder, and the clamping block 9 is located on the side of the guide groove 64 away from the first processing channel 16 under the action of the spring 92. The broach 4 is located below the lower limit plate 2. At this time, the lower end of the broach 4 is located in the third processing channel 82 and is against the support platform 7.

[0056] This embodiment takes a cross-shaped workpiece 3 as an example. Before processing the workpiece 3, the workpiece 3 is first fixed between the lower limit plate 2 and the upper limit plate 51. When fixing, first manually place the workpiece 3 on the lower limit plate 2. At this time, the four ends of the workpiece 3 are respectively located in the four V-shaped grooves, and the through holes on the workpiece 3 are aligned with the through channel. Then start the cylinder 12, slide the lower limit plate 2 to the rear side, and close the cylinder 12 after the through holes on the workpiece 3 are aligned with the broach 4. Then start all the clamping drive components, and the clamping drive components drive the lead screw 15 to rotate, so that the support plate 1 slides upward, and the lower limit plate 2 and the workpiece 3 located on the lower limit plate 2 are pushed upward until the workpiece 3 is pressed against the upper limit plate 51 by the lower limit plate 2, and the workpiece 3 is fixed.

[0057] When the clamping drive is started, the pusher 72 is started, and the push rod of the pusher 72 is controlled to extend, pushing the locking accessory 65 to rotate clockwise. Since the clamping block 9 is limited by the guide groove 64 and cannot rotate with the locking accessory 65, the inclined surface 69 on the locking accessory 65 slides relative to the clamping block 9, and the three clamping blocks 9 are simultaneously pushed to the side close to the second processing channel 63, so that the three clamping blocks 9 are clamped on the broach 4 along the circumference of the broach 4 to fix the broach 4. When the clamping block 9 slides, the baffle 93 cannot move due to the limiting effect of the limiting member 81, and the end of the spring 92 away from the baffle 93 moves with the clamping block 9 to the side close to the baffle 93, and the spring 92 is compressed.

[0058] Then, the push member 72 is closed, the processing drive member 71 is started, and the push rod of the processing drive member 71 is controlled to extend, the support platform 7 is pushed upward, and the broach 4 is pushed upward, and the broach 4 passes through the workpiece 3 from bottom to top to process the workpiece 3. After the upper end of the broach 4 moves to a position against the support platform 7 where the upper pulling unit is located, the processing drive member 71 of the lower pulling unit is closed, and the push member 72 is started and the push rod of the push member 72 is controlled to retract, which can drive the locking accessory 65 to rotate in the opposite direction, and the clamping block 9 is reset under the elastic force of the spring 92, and the broach 4 is automatically released. Then repeat the above steps, start the processing drive member 71 of the upper pulling unit, and continue to drive the broach 4 upward, so that the lower end of the broach 4 passes through the workpiece 3 and moves to the top of the workpiece 3, completing the processing of one workpiece 3.

[0059] When the workpiece 3 needs to be removed, the pressing drive member is started and rotated in the opposite direction to slide the support plate 1 downward and release the workpiece 3. In the process of the support plate 1 sliding downward, the cylinder 12 is started to push the lower limit plate 2 forward so that the lower limit plate 2 slides to the front of the processing channel 16. At this time, the push rod of the upper pulling unit can be controlled to extend, so that the broach 4 moves downward, and the processed workpiece 3 is removed and the next workpiece 3 to be processed is placed. When the lower end of the broach 4 moves to abut against the support platform 7 of the lower pulling unit, the lower end of the broach 4 is clamped on the lower pulling unit, and the upper end of the broach 4 is released. Then, the lower pulling unit is controlled to pull the broach 4 downward, so that the broach 4 moves to the bottom of the support plate 1, and then the cylinder 12 is controlled to reset the lower limit plate 2 to the rear side, and then the above steps are repeated to process the next workpiece 3.

[0060] Example 2

[0061] On the basis of Example 1, Fig. 9 and Fig.10 As shown, a deburring unit is provided between the upper pulling unit and the support plate 1 in this embodiment, and the deburring unit includes a rotating driving member 54 and a cleaning brush 55. A cleaning plate 5 is transversely fixed to the frame in this embodiment by bolts, and a cleaning channel 53 aligned with the processing channel 16 is provided on the cleaning plate 5. The upper limit plate 51 in this embodiment is installed at the bottom of the cleaning plate 5 by bolts. An annular mounting block 59 is provided on the top of the cleaning plate 5, and a bearing is provided between the mounting block 59 and the cleaning plate 5, and the outer ring of the bearing is interference fit with the cleaning channel 53 of the cleaning plate 5, and the inner ring is interference fit with the lower end of the mounting block 59.

[0062] The rotating driving member 54 is fixed to the cleaning plate 5 by bolts, and the output shaft of the rotating driving member 54 is connected to a driving gear by a flat key, and the driving gear is connected to a driving synchronous pulley 56 by a reducer, and a driven synchronous pulley 57 is provided on the top of the mounting block 59, and a synchronous belt 58 is provided between the driving synchronous pulley 56 and the driven synchronous pulley 57. Specifically, the installation of the synchronous pulley and the installation of the synchronous belt 58 are the same as those in the prior art, and will not be repeated in this embodiment. The cleaning brush 55 includes a mounting portion and a wire-shaped cleaning portion glued to the mounting portion, and the mounting portion is fixed to the top of the driven synchronous pulley 57 by bolts.

[0063] Before processing, the rotating drive member 54 is started first, and the rotating drive member 54 drives the mounting block 59 to rotate through the synchronous belt 58, so that the cleaning brush 55 rotates, and then the cleaning liquid or coolant is sprayed downward above the mounting block 59 through the pipeline. The broach 4 in this embodiment processes the workpiece 3 when it moves upward, and the broach 4 contacts the cleaning brush 55 after passing through the cleaning channel 53 after moving upward. The cleaning brush 55 cleans the broach 4 while rotating, so that the burrs on the surface of the broach 4 are removed. When the cleaning liquid or coolant flows downward through the cleaning brush 55, it flushes the broach 4 and the cleaning brush 55, so that the burrs are away from the broach 4; at the same time, the cleaning liquid or coolant cools the broach 4.

[0064] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A vertical broaching machine, comprising a limiting unit for limiting a workpiece, wherein an upper pulling unit and a lower pulling unit are respectively arranged on the upper and lower sides of the limiting unit, and the upper pulling unit and the lower pulling unit are symmetrically arranged along the limiting unit, characterized in that: The limiting unit can slide along the radial direction of the broach, and the limiting unit is provided with a through channel aligned with the broach, and the diameter of the through channel is larger than the outer diameter of the widest part of the broach; the upper pulling unit and the lower pulling unit both include a clamping assembly and a processing drive member, the clamping assembly includes a base, a pressing member and a pushing member, the pressing member includes a pressing block slidably connected to the base and a spring used to make the pressing block slide to a side away from the broach, and the pushing member is used to push the pressing block to a side close to the broach; The processing drive member is used to drive the base to slide vertically; An annular locking accessory is rotatably connected to the base, and a side wall of the locking accessory facing the pressing block is provided with an inclined surface that can push the pressing block toward the side close to the broach, and a pushing member is connected to the locking accessory and is used to drive the locking accessory to rotate; The limiting unit comprises a lower limiting member and an upper limiting member located between the upper pulling unit and the lower limiting member, the lower limiting member comprises a lower limiting plate and a slider, the through channel is located on the lower limiting plate, and the slider is fixedly connected to the lower limiting plate.

2. A vertical broaching machine according to claim 1, characterized in that: The lower limit plate is laterally provided with a slide rail, and the slider is slidably connected to the slide rail.

3. A vertical broaching machine according to claim 2, characterized in that: The lower limit member is connected with a sliding member for driving the lower limit plate to slide along the slide rail.

4. A vertical broaching machine according to claim 2 or 3, characterized in that: The lower limit member is slidably connected to a support plate, the support plate is provided with a processing channel aligned with the connecting channel, and the support plate is connected to a clamping drive member for pushing the support plate to slide vertically.

5. A vertical broaching machine according to claim 1, characterized in that: The clamping block is provided with a through slot, the spring is located in the through slot, and a baffle is slidably connected in the through slot, and the two ends of the spring are respectively fixed on the baffle and the side wall of the through slot; the clamping assembly also includes a limiting member for limiting the baffle.

6. A vertical broaching machine according to claim 5, characterized in that: A support platform is provided on one side of the base away from the limiting unit, and the processing drive is detachably connected to the support platform and can push the support platform to slide vertically; the vertical cross-section of the locking accessory is an inverted L-shape, and the locking accessory cover is arranged on the base.

7. A vertical broaching machine according to claim 6, characterized in that: A pressure plate is provided between the limiting member and the locking accessory, and the vertical projections of one end of the pressure plate away from the broach and one end of the pressure plate close to the broach are respectively located on the locking accessory and the limiting member.

8. A vertical broaching machine according to claim 7, characterized in that: A deburring unit is provided below the upper pulling unit, and the deburring unit comprises a cleaning brush and a rotating driving member for driving the cleaning brush to rotate.

Images