Tapping device for brake caliper machining

Abstract

The invention relates to the field of tapping equipment, and particularly discloses a tapping device for brake caliper machining, which comprises a rack and a tapping mechanism arranged at the top of the rack, the tapping mechanism comprises a tapping frame arranged at the top of the rack, a transmission box is arranged below the tapping frame, a tapping motor is arranged on the inner side of the transmission box, and a tapping motor is arranged on the inner side of the transmission box. A screw tap which is driven by the tapping motor to rotate and extends to the bottom of the transmission box is arranged at the bottom of the tapping motor, and a hydraulic cylinder used for driving the transmission box to ascend and descend is arranged at the top of the tapping frame. A sliding groove is formed in the top of the rack in the length direction of the rack, and the sliding groove is movably connected with a pair of positioning carriers used for positioning the calipers. Through mutual cooperation of the tapping mechanism, the two positioning carriers connected into a whole and the reciprocating displacement mechanism, the tapping efficiency can be improved, the two positioning carriers can move in a reciprocating mode, lifting of the tapping mechanism is used as a power source of reciprocating displacement, and continuous tapping production can be achieved.

Description

Technical Field

[0001] The invention relates to the field of tapping equipment, in particular to a tapping device for machining a brake caliper. Background Art

[0002] The car brake caliper is a special term for disc brakes. It is the component that applies force to the brake disc on the protruding part of the outer side of the brake pad. It is mainly used for braking and can help the wheels slow down, stop or keep stopped. It is an indispensable and important part in the braking system. The caliper bracket is a component of the car brake caliper.

[0003] The tapping process in the production of automobile calipers is a key manufacturing step, which involves machining threaded holes on the caliper body for the subsequent installation of bolts or other fasteners. In the prior art, the caliper tapping equipment needs to first position the workpiece when in use, and then the control system controls the displacement of the tapping mechanism to tap the workpiece. After tapping, the tapping mechanism is reset and the product can be removed. After removal, the caliper to be processed must be fixed before the tapping operation can continue. The time taken by the disassembly and assembly process means that the tapping effect is stagnant, which cannot maximize efficiency and increases costs.

[0004] Therefore, it is necessary to propose a tapping device for brake caliper machining to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a tapping device for brake caliper machining, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A tapping device for machining a brake caliper, comprising a frame and a tapping mechanism arranged on the top of the frame, wherein the tapping mechanism comprises a tapping frame arranged on the top of the frame, a transmission box is arranged below the tapping frame, a tapping motor is arranged inside the transmission box, a tap driven to rotate by the tapping motor and extending to the bottom of the transmission box is arranged at the bottom of the tapping motor, and a hydraulic cylinder for driving the transmission box to rise and fall is arranged at the top of the tapping frame;

[0008] A slide groove is provided on the top of the frame along the length direction of the frame, and a pair of positioning carriers for positioning the caliper are movably connected to the slide groove, and a connecting plate is fixedly provided between the two positioning carriers, so as to connect the two positioning carriers into a whole;

[0009] The cam is an axially-coupled device for axially coupling the first and second gears, and the cam is actuated by a plurality of gears, each of which is coupled to a pair of gears, wherein the plurality of gears are coupled to the pair of gears. The plurality of gears are coupled to the pair of gears, each of which is coupled to a pair of gears. The plurality of gears are coupled to the pair of gears, each of which is coupled to a pair of gears. The plurality of gears are coupled to the pair of gears, each of which is coupled to a pair of gears. An arc plate is provided to connect the two racks into a whole, and connecting arms corresponding to the positioning carrier are fixedly provided on the arc plates at both ends of the rack, and the upper ends of the connecting arms extend to the inner side of the slide groove and are fixedly connected to the bottom of the positioning carrier, so that the positioning carrier is driven to move when the arc plate is displaced, and a circle of spiral groove is provided on the outer side of the upper end of the driving shaft, and a vertical groove corresponding to the two ends of the spiral groove is vertically provided on one side of the upper end of the driving shaft, the upper end of the vertical groove corresponds to the upper end of the spiral groove, and the middle part of the vertical groove corresponds to the lower end of the spiral groove, and the driving cylinder is movably sleeved on the outer side of the driving shaft, and a convex shaft adapted to the vertical groove and the spiral groove is provided on the inner wall of the lower end of the driving cylinder, and the convex shaft is movably connected to the spiral groove and the vertical groove, so that when the convex shaft is located in the spiral groove, the driving cylinder drives the convex shaft to move downward and the driving shaft rotates.

[0010] Preferably, a first floating limit member is provided at the inner upper end of the vertical groove, the first floating limit member includes a first fixed groove provided at the inner upper end of the vertical groove, the first fixed groove is movably connected with a first limit block, a second spring is fixedly provided between the first limit block and the inner wall of the first fixed groove, and when the second spring is in an initial state, one end of the first limit block protrudes from the inner wall of the vertical groove, and the lower end of the first limit block facing outward is an inclined surface, and the upper end of the first limit block corresponds to the upper inner wall of the spiral groove.

[0011] Preferably, a second floating limit piece is provided at the lower end of the spiral groove, and the second floating limit piece includes a second fixed groove arranged at the lower end of the inner side of the spiral groove, and the second fixed groove is movably connected with a second limit block, and a third spring is fixedly provided between the second limit block and the inner wall of the second fixed groove, and in the initial state of the third spring, one end of the second limit block protrudes from the inner wall of the spiral groove, and the end of the second limit block facing outward and away from the vertical groove is an inclined surface, and the end of the second limit block away from the inclined surface corresponds to the inner wall of the vertical groove.

[0012] Preferably, a positioning component is provided on the positioning carrier, and the positioning component includes a positioning groove arranged on the top of the positioning carrier and used for inserting the lower end of the caliper, and both ends of the top of the positioning carrier are movably connected with clamping blocks adapted to the shape of the caliper and used for clamping the side of the caliper.

[0013] Preferably, the opposite sides of the two clamping blocks on the same positioning carrier are provided with a driving member for pushing the clamping blocks to move, and the driving member includes a force-bearing seat fixedly arranged on the opposite sides of the two clamping blocks, the force-bearing seat corresponds to the driving cylinder, and the side of the upper end of the force-bearing seat away from the clamping block is an inclined surface, and the side surface of the lower end of the driving cylinder is rotatably connected to a roller corresponding to the force-bearing seat, so that when the driving cylinder drives the roller to move downward, the roller can push the overall displacement of the force-bearing seat and the clamping block.

[0014] Preferably, a reset assembly is arranged between the force-bearing seat and the positioning carrier, and the reset assembly includes a guide rod fixedly arranged at the lower end of the force-bearing seat close to one side of the positioning carrier, a blind hole corresponding to the guide rod is arranged on the side of the positioning carrier, and one end of the guide rod away from the force-bearing seat is movably connected to the blind hole, and a first spring is arranged on the outer side of the guide rod, and the first spring is located between the force-bearing seat and the side wall of the positioning carrier, so that the first spring contracts when the force-bearing seat drives the clamping block to move toward the middle direction of the top of the positioning carrier.

[0015] Preferably, the side wall of the positioning carrier is provided with an "L"-shaped limiting plate, the upper end of the limiting plate protrudes from the top of the positioning carrier, and the limiting plate is used to block the clamping block.

[0016] Preferably, the number of the tapping motors is the same as the number of threads required to be tapped on the caliper, and the positions of the taps correspond one-to-one to the positions on the caliper that require tapping.

[0017] Preferably, when the convex shaft moves from the upper end of the spiral groove to the lower end of the spiral groove, the incomplete gear just completes one meshing with a rack, and one of the positioning carriers just corresponds to the tapping mechanism, and at this time the roller corresponds to the force-bearing seat on the positioning carrier.

[0018] Preferably, when the force-bearing seat moves to the limit distance, the clamp block just tightly clamps the side of the caliper, and after the tight clamping, the tap begins to contact the tapping part on the caliper.

[0019] Compared with the prior art, the present invention provides a tapping device for brake caliper machining, which has the following beneficial effects:

[0020] 1. The tapping device for processing the brake caliper can improve the tapping efficiency through the cooperation of the set tapping mechanism, two positioning carriers connected as a whole, and the reciprocating displacement mechanism. The two positioning carriers can be reciprocated, and the lifting and lowering of the tapping mechanism is used as the power source for the reciprocating displacement. When processing the caliper on one of the positioning carriers, the caliper can be loaded and unloaded on the other positioning carrier, and the time for disassembling and assembling the caliper can be utilized, so that continuous tapping production can be realized, which greatly improves the work efficiency.

[0021] 2. The tapping device for processing the brake caliper can automatically fix and clamp the caliper according to the lifting and lowering of the tapping mechanism through the positioning component and the driving part. It has a compact structure, does not require additional operation or setting of a driving source, has high linkage, and is low in cost. The reset component facilitates the reset and opening of the positioning component, thereby facilitating the removal of the caliper. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the specific structure between the tapping mechanism and the positioning carrier highlighted in the present invention;

[0024] Figure 3 The present invention Figure 2 Schematic diagram of the structure when the foundation is disassembled;

[0025] Figure 4 It is a schematic diagram of the structure of the transmission box of the present invention in a disassembled state;

[0026] Figure 5 It is a schematic diagram of the structure of the incomplete gear, the drive shaft, the first gear, and the third gear of the present invention in a disassembled state;

[0027] Figure 6 It is a schematic diagram of the structure of the drive cylinder and the drive shaft of the present invention in a disassembled state;

[0028] Figure 7 It is a schematic structural diagram of the drive shaft of the present invention;

[0029] Figure 8 It is a partial enlarged view of the first floating limit assembly and the second floating limit assembly of the present invention in a disassembled state;

[0030] Fig. 9 It is a schematic diagram of the structure of the caliper and the positioning carrier of the present invention in a disassembled state;

[0031] Fig.10 It is a schematic diagram of the structure of the clamping block and the positioning carrier of the present invention in a disassembled state;

[0032] Fig.11It is a schematic structural diagram of the roller and the force bearing seat of the present invention in a matching state.

[0033] In the figure: 1, frame; 2, tapping frame; 3, hydraulic cylinder; 4, positioning carrier; 5, incomplete gear; 6, rack; 7, arc plate; 8, transmission box; 9, side plate; 10, driving shaft; 11, driving cylinder; 12, slide groove; 13, tapping motor; 14, tap; 15, roller; 16, connecting arm; 17, spiral groove; 18, vertical groove; 19, convex shaft; 20, connecting plate; 21, positioning groove; 22, clamping block; 23, force seat; 24, guide rod; 25, first spring; 26, blind hole; 27, limit plate; 28, first limit block; 29, second spring; 30, first fixed groove; 31, second limit block; 32, third spring; 33, second fixed groove; 34, first gear; 35, second gear; 36, third gear. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] like Figure 1-Figure 4 As shown, a tapping device for brake caliper machining comprises a frame 1 and a tapping mechanism arranged on the top of the frame 1, the tapping mechanism comprises a tapping frame 2 arranged on the top of the frame 1, a transmission box 8 is arranged below the tapping frame 2, a tapping motor 13 is arranged inside the transmission box 8, a tap 14 driven to rotate by the tapping motor 13 and extending to the bottom of the transmission box 8 is arranged at the bottom of the tapping motor 13, the number of tapping motors 13 is the same as the number of tapping required on the caliper, and the position of the tap 14 corresponds to the position of the caliper that needs to be tapped one by one, and a hydraulic cylinder 3 for driving the transmission box 8 to rise and fall is arranged on the top of the tapping frame 2; a slide groove 12 is arranged on the top of the frame 1 along the length direction of the frame 1, and the slide groove 12 is movably connected with a pair of positioning carriers 4 for positioning the caliper, and a connecting plate 20 is fixedly arranged between the two positioning carriers 4, so as to connect the two positioning carriers 4 into a whole;

[0036] like Figure 2-Figure 8 , Fig.11As shown, it also includes a reciprocating movement mechanism for driving the positioning carrier 4 to move, and the reciprocating movement mechanism includes side plates 9 symmetrically fixedly arranged on both sides of the transmission box 8, and a driving cylinder 11 is vertically fixedly arranged at the bottom of the side plates 9. The upper end of the frame 1 is rotatably connected to a driving shaft 10 corresponding to the driving cylinder 11, and the bottom of the driving shaft 10 extends to the bottom of the frame 1 and is fixedly provided with a first gear 34. One end of the bottom of the frame 1 is provided with a second gear 35 meshing with the first gear 34 and having a diameter larger than the first gear 34, and the first gear 34 is meshed with the upper end of the second gear 35, and the lower end of the second gear 35 is meshed with a third gear 36 having the same diameter as the second gear 35, and an incomplete gear 5 is fixedly arranged at the bottom of the third gear 36, and racks 6 intermittently meshing with the incomplete gear 5 are symmetrically arranged on both sides of the incomplete gear 5, and arc plates 7 are fixedly arranged at the ends of the two racks 6 corresponding to the same incomplete gear 5, The two racks 6 are connected as a whole, and connecting arms 16 corresponding to the positioning carrier 4 are fixedly provided on the arc plates 7 at both ends of the racks 6, and the upper ends of the connecting arms 16 extend to the inner side of the slide groove 12 and are fixedly connected to the bottom of the positioning carrier 4, so that the positioning carrier 4 is driven to move when the arc plate 7 is displaced, and a circle of spiral grooves 17 are provided on the outer side of the upper end of the driving shaft 10, and a vertical groove 18 corresponding to the two ends of the spiral groove 17 is vertically provided on one side of the upper end of the driving shaft 10, and the upper end of the vertical groove 18 corresponds to the upper end of the spiral groove 17, and the middle part of the vertical groove 18 corresponds to the lower end of the spiral groove 17. The driving cylinder 11 is movably sleeved on the outer side of the driving shaft 10, and the inner wall of the lower end of the driving cylinder 11 is provided with a convex shaft 19 adapted to the vertical groove 18 and the spiral groove 17, and the convex shaft 19 is movably connected with the spiral groove 17 and the vertical groove 18, so that when the convex shaft 19 is located in the spiral groove 17, the driving cylinder 11 drives the convex shaft 19 to move downward and the driving shaft 10 rotates.

[0037] like Figure 8 As shown, a first floating limit member is provided at the inner upper end of the vertical groove 18, and the first floating limit member includes a first fixed groove 30 provided at the inner upper end of the vertical groove 18, and the first fixed groove 30 is movably connected with a first limit block 28, and a second spring 29 is fixedly provided between the first limit block 28 and the inner wall of the first fixed groove 30, and when the second spring 29 is in an initial state, one end of the first limit block 28 protrudes from the inner wall of the vertical groove 18, and the lower end of the first limit block 28 facing outward is an inclined surface, and the upper end of the first limit block 28 corresponds to the upper inner wall of the spiral groove 17.

[0038] like Figure 8As shown, a second floating limit member is provided at the lower end of the spiral groove 17, and the second floating limit member includes a second fixed groove 33 provided at the lower end of the inner side of the spiral groove 17, and the second fixed groove 33 is movably connected with a second limit block 31, and a third spring 32 is fixedly provided between the second limit block 31 and the inner wall of the second fixed groove 33, and in the initial state of the third spring 32, one end of the second limit block 31 protrudes from the inner wall of the spiral groove 17, and the end of the second limit block 31 facing outward and away from the vertical groove 18 is an inclined surface, and the end of the second limit block 31 away from the inclined surface corresponds to the inner wall of the vertical groove 18.

[0039] like Figure 9-11 As shown, a positioning component is provided on the positioning carrier 4, and the positioning component includes a positioning groove 21 arranged on the top of the positioning carrier 4 and used for inserting the lower end of the caliper, and both ends of the top of the positioning carrier 4 are movably connected with a clamping block 22 adapted to the shape of the caliper and used for clamping the side of the caliper, and the side wall of the positioning carrier 4 is provided with an "L"-shaped limiting plate 27, the upper end of the limiting plate 27 protrudes from the top of the positioning carrier 4, and the limiting plate 27 is used to block the clamping block 22, and the two clamping blocks on the same positioning carrier 4 are connected to each other. The opposite sides of the blocks 22 are provided with driving members for pushing the clamping blocks 22 to move. The driving members include force-bearing seats 23 fixedly arranged on the opposite sides of the two clamping blocks 22. The force-bearing seats 23 correspond to the driving cylinder 11, and the side of the upper end of the force-bearing seats 23 away from the clamping blocks 22 is an inclined surface. The side surface of the lower end of the driving cylinder 11 is rotatably connected to the roller 15 corresponding to the force-bearing seat 23, so that when the driving cylinder 11 drives the roller 15 to move downward, the roller 15 can push the force-bearing seat 23 and the clamping blocks 22 to move as a whole, and the convex shaft 19 When the incomplete gear 5 moves from the upper end of the spiral groove 17 to the lower end of the spiral groove 17, it just completes a meshing with a rack 6, and one of the positioning carriers 4 just corresponds to the tapping mechanism, and at this time, the roller 15 corresponds to the force-bearing seat 23 on the positioning carrier 4. When the force-bearing seat 23 moves to the limit distance, the clamping block 22 just tightly clamps the side of the caliper, and after the tight clamping, the tap 14 begins to contact the tapping part on the caliper; a reset component is provided between the force-bearing seat 23 and the positioning carrier 4. The reset assembly includes a guide rod 24 fixedly arranged at the lower end of the force-bearing seat 23 close to one side of the positioning carrier 4, a blind hole 26 corresponding to the guide rod 24 is arranged on the side of the positioning carrier 4, and one end of the guide rod 24 away from the force-bearing seat 23 is movably connected to the blind hole 26, and a first spring 25 is arranged on the outer side of the guide rod 24, and the first spring 25 is located between the force-bearing seat 23 and the side wall of the positioning carrier 4, so that the first spring 25 contracts when the force-bearing seat 23 drives the clamping block 22 to move toward the middle direction of the top of the positioning carrier 4.

[0040] Working principle: when in use, the incomplete gear 5 to be tapped is inserted into the positioning groove 21 on the top of the positioning carrier 4 for pre-positioning. Initially, one of the positioning carriers 4 is located below the tapping mechanism, and the other positioning carrier 4 is located at one end of the frame 1, and initially the cam 19 is located on the inner side of the upper end of the spiral groove 17. When tapping, the hydraulic cylinder 3 is controlled to drive the transmission box 8 and the side plate 9 to move downward as a whole, and the side plate 9 drives the driving cylinder 11 to move downward, and then the cam 19 moves downward in the spiral groove 17, and then the driving shaft 10 rotates, and the driving shaft 10 drives the first gear 34 to rotate, and the first gear 34 drives the second gear 35 to rotate and reduce speed, and the second gear 35 drives the third gear 36 to rotate, and the third gear 36 drives the incomplete gear 5 to rotate, and the incomplete gear 5 is meshed with the rack 6 on one side, thereby driving the rack 6 and the arc plate 7 to move in one direction as a whole, thereby driving the two positioning carriers 4 to move in one direction as a whole through the connecting arm 16, and when the cam 19 moves from the upper end of the spiral groove 17 to the spiral groove When the incomplete gear 5 reaches the lower end of 17, it meshes with a rack 6, and one of the positioning carriers 4 just corresponds to the tapping mechanism. Then the tapping mechanism continues to move downward, the convex shaft 19 enters the vertical groove 18 and moves downward, the driving shaft 10 remains stationary, and the roller 15 begins to contact and squeeze the force-bearing seat 23. The force-bearing seat 23 drives the clamping block 22 to move and compress the first spring 25. When the clamping block 22 just clamps the caliper firmly, the force-bearing seat 23 stops moving and remains stationary. The rear tapping motor 13 drives the tap 14 to rotate and contact the caliper to achieve metal cutting and tapping. After the tapping is completed, the tapping mechanism rises and resets, and the convex shaft 19 moves up along the vertical groove 18 and resets to the upper end of the spiral groove 17. Then, when processing again, the positioning carrier 4 is also driven to move in another direction as a whole, and the processed caliper is removed. The caliper to be processed is sent to the bottom of the tapping mechanism again for tapping. During the tapping, the processed caliper can be removed, and then a new caliper is fixed, and this cycle is repeated to improve efficiency.

[0041] It should be noted that when the convex shaft 19 reaches the bottom of the spiral groove 17, it will squeeze the second limit block 31, and the second limit block 31 compresses the third spring 32 and enters the second fixed groove 33. When the convex shaft 19 is disengaged from the second limit block 31, the second limit block 31 is popped out. When the convex shaft 19 moves upward from the vertical groove 18, it will not enter the spiral groove 17 due to the obstruction of the second limit block 31, thereby ensuring the vertical displacement. Similarly, when the convex shaft 19 reaches the upper end of the vertical groove 18, it will squeeze the first limit block 28, and then move to the top of the first limit block 28, and the first limit block 28 will pop out. When the convex shaft 19 moves downward at the inner upper end of the spiral groove 17, it will not enter the vertical groove 18 downward due to the obstruction of the first limit block 28.

[0042] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A tapping device for machining a brake caliper, comprising a frame (1) and a tapping mechanism arranged on the top of the frame (1), characterized in that: The tapping mechanism comprises a tapping frame (2) arranged on the top of a frame (1), a transmission box (8) is arranged below the tapping frame (2), a tapping motor (13) is arranged inside the transmission box (8), a tap (14) is arranged at the bottom of the tapping motor (13) and is driven to rotate by the tapping motor (13) and extends to the bottom of the transmission box (8), and a hydraulic cylinder (3) for driving the transmission box (8) to rise and fall is arranged at the top of the tapping frame (2); A slide groove (12) is provided at the top of the frame (1) along the length direction of the frame (1), and the slide groove (12) is movably connected to a pair of positioning carriers (4) for positioning the caliper, and a connecting plate (20) is fixedly provided between the two positioning carriers (4), thereby connecting the two positioning carriers (4) into a whole; The machine frame (1) further comprises a reciprocating displacement mechanism for driving the positioning carrier (4) to move, the reciprocating displacement mechanism comprising side plates (9) symmetrically fixedly arranged on both sides of the transmission box (8), the bottom of the side plates (9) being vertically fixedly provided with a driving cylinder (11), the upper end of the frame (1) being rotatably connected with a driving shaft (10) corresponding to the driving cylinder (11), the bottom of the driving shaft (10) extending to the bottom of the frame (1) and being fixedly provided with a first gear (34), one end of the bottom of the frame (1) being provided with a gear meshing with the first gear (34) and having a diameter larger than the first gear (34), The first gear (34) is meshed with the second gear (35) at the upper end, the second gear (35) is meshed with the third gear (36) having the same diameter as the second gear (35) at the lower end, an incomplete gear (5) is fixedly arranged at the bottom of the third gear (36), racks (6) intermittently meshing with the incomplete gear (5) are symmetrically arranged on both sides of the incomplete gear (5), and arc plates (7) are fixedly arranged at the ends of the two racks (6) corresponding to the same incomplete gear (5), so that the two gears (5) are connected to each other. The rack (6) is connected as a whole, and connecting arms (16) corresponding to the positioning carrier (4) are fixedly arranged on the arc plates (7) at both ends of the rack (6), and the upper ends of the connecting arms (16) extend to the inner side of the slide groove (12) and are fixedly connected to the bottom of the positioning carrier (4), so that when the arc plate (7) moves, the positioning carrier (4) is driven to move, and a circle of spiral grooves (17) are arranged on the outer side of the upper end of the driving shaft (10), and vertical grooves (18) corresponding to the two ends of the spiral groove (17) are vertically arranged on one side of the upper end of the driving shaft (10), and the vertical grooves The upper end of the vertical groove (18) corresponds to the upper end of the spiral groove (17), the middle part of the vertical groove (18) corresponds to the lower end of the spiral groove (17), the driving cylinder (11) is movably sleeved on the outer side of the driving shaft (10), and the inner wall of the lower end of the driving cylinder (11) is provided with a convex shaft (19) adapted to the vertical groove (18) and the spiral groove (17), and the convex shaft (19) is movably connected with the spiral groove (17) and the vertical groove (18), so that when the convex shaft (19) is located in the spiral groove (17), the driving cylinder (11) drives the convex shaft (19) to move downward, and the driving shaft (10) rotates.

2. A tapping device for brake caliper machining according to claim 1, characterized in that: A first floating limit member is provided at the inner upper end of the vertical groove (18), and the first floating limit member includes a first fixed groove (30) provided at the inner upper end of the vertical groove (18), and the first fixed groove (30) is movably connected with a first limit block (28), and a second spring (29) is fixedly provided between the first limit block (28) and the inner wall of the first fixed groove (30), and when the second spring (29) is in an initial state, one end of the first limit block (28) protrudes from the inner wall of the vertical groove (18), and the lower end of the first limit block (28) facing outward is an inclined surface, and the upper end of the first limit block (28) corresponds to the upper inner wall of the spiral groove (17).

3. The tapping device for brake caliper machining according to claim 1, characterized in that: A second floating limit member is arranged at the lower end of the spiral groove (17), and the second floating limit member includes a second fixed groove (33) arranged at the lower end of the inner side of the spiral groove (17), and the second fixed groove (33) is movably connected with a second limit block (31), and a third spring (32) is fixedly arranged between the second limit block (31) and the inner wall of the second fixed groove (33), and in the initial state of the third spring (32), one end of the second limit block (31) protrudes from the inner wall of the spiral groove (17), and the end of the second limit block (31) facing outward and away from the vertical groove (18) is an inclined surface, and the end of the second limit block (31) away from the inclined surface corresponds to the inner wall of the vertical groove (18).

4. The tapping device for brake caliper machining according to claim 1, characterized in that: The positioning carrier (4) is provided with a positioning component, the positioning component comprising a positioning groove (21) provided at the top of the positioning carrier (4) and used for inserting the lower end of the caliper, and both ends of the top of the positioning carrier (4) are movably connected with clamping blocks (22) adapted to the shape of the caliper and used for clamping the side of the caliper.

5. A tapping device for brake caliper machining according to claim 4, characterized in that: The two clamping blocks (22) on the same positioning carrier (4) are both provided with a driving member for pushing the clamping blocks (22) to move, and the driving member includes a force-bearing seat (23) fixedly arranged on the opposite side of the two clamping blocks (22), the force-bearing seat (23) corresponds to the driving cylinder (11), and the side of the upper end of the force-bearing seat (23) away from the clamping block (22) is an inclined surface, and the side surface of the lower end of the driving cylinder (11) is rotatably connected to a roller (15) corresponding to the force-bearing seat (23), so that when the driving cylinder (11) drives the roller (15) to move downward, the roller (15) can push the force-bearing seat (23) and the clamping block (22) to move as a whole.

6. A tapping device for brake caliper machining according to claim 5, characterized in that: A reset assembly is arranged between the force-bearing seat (23) and the positioning carrier (4), and the reset assembly comprises a guide rod (24) fixedly arranged at the lower end of the force-bearing seat (23) near the side of the positioning carrier (4); a blind hole (26) corresponding to the guide rod (24) is arranged on the side of the positioning carrier (4), and one end of the guide rod (24) away from the force-bearing seat (23) is movably connected to the blind hole (26); a first spring (25) is arranged on the outer side of the guide rod (24), and the first spring (25) is located between the side wall of the force-bearing seat (23) and the positioning carrier (4), so that when the force-bearing seat (23) drives the clamping block (22) to move toward the middle direction of the top of the positioning carrier (4), the first spring (25) contracts.

7. The tapping device for brake caliper machining according to claim 4, characterized in that: The side wall of the positioning carrier (4) is provided with an L-shaped limiting plate (27), the upper end of the limiting plate (27) protrudes from the top of the positioning carrier (4), and the limiting plate (27) is used to block the clamping block (22).

8. The tapping device for brake caliper machining according to claim 1, characterized in that: The number of the tapping motors (13) is the same as the number of threads required to be tapped on the caliper, and the positions of the taps (14) correspond one-to-one to the positions on the caliper that require tapping.

9. The tapping device for machining a brake caliper according to claim 5, characterized in that: When the convex shaft (19) moves from the upper end of the spiral groove (17) to the lower end of the spiral groove (17), the incomplete gear (5) just completes one meshing with a rack (6), and one of the positioning carriers (4) just corresponds to the tapping mechanism, and at this time, the roller (15) corresponds to the force bearing seat (23) on the positioning carrier (4).

10. A tapping device for machining a brake caliper according to claim 9, characterized in that: When the force bearing seat (23) is displaced to the limit distance, the clamping block (22) just tightly clamps the side of the caliper, and after the tight clamping, the tap (14) begins to contact the tapping part on the caliper.

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