Brake drum machining center milling clamp structure

Abstract

The utility model relates to the technical field of tool clamps, and discloses a brake drum machining center milling clamp structure which comprises a bottom supporting frame and a tool table installed at the upper end of a bottom supporting frame rack, and an outer clamping fixing mechanism is arranged at the upper end of the bottom supporting frame rack in the circumferential direction of the tool table. And an inner support fixing mechanism is arranged at the upper end of the rack of the bottom support frame and is arranged in the tool table. The tool table serves as a clamping platform of the brake drum, then the outer clamping fixing mechanism and the inner supporting fixing mechanism are installed and combined in parallel, mechanical clamping and fixing work in an inner supporting or outer clamping mode is carried out on the brake drum, double clamping and fixing work in an inner and outer mode can also be carried out on the brake drum, the double clamping capacity is achieved, and the work efficiency is improved. The clamp is simple in structure and convenient to use, can adapt to inner and outer clamping work of the brake drum without frequently replacing the clamp, is better in flexible adaptability, is more efficient in mechanical clamping capacity, and can adapt to clamping and fixing work of brake drums of different sizes and models.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a milling fixture structure for a brake drum machining center. Background Art

[0002] As a kind of tooling fixture, milling machine fixture is mainly used for processing planes, grooves, splines and various molding surfaces on parts. It is one of the most commonly used fixtures. Brake drum is the main component of the vehicle braking system, and its drum body is usually produced and processed by milling machine. Therefore, when processing the brake drum, it is usually mechanically clamped by milling fixture.

[0003] However, most of the existing milling fixtures only have a single function of mechanical clamping capability. When the brake drum is internally supported or externally clamped, it is often necessary to replace different styles of fixtures to adapt to the clamping process of the brake drum. The replacement intensity is high and the time is long. To this end, those skilled in the art provide a milling fixture structure for a brake drum machining center to solve the problems raised in the above background technology. Utility Model Content

[0004] The main purpose of the utility model is to provide a milling fixture structure for a brake drum machining center, which can effectively solve the problem that the existing milling fixture for brake drum machining in the background technology has a relatively single mechanical clamping and machining capability.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a milling fixture structure of a brake drum machining center, including a bottom support frame and a tooling table installed on the upper end of the bottom support frame frame;

[0006] The upper end of the frame of the bottom support frame is provided with an external clamp fixing mechanism along the circumference of the tooling table, and the upper end of the frame of the bottom support frame is internally provided with an internal support fixing mechanism inside the tooling table;

[0007] The outer clamp fixing mechanism includes support seats symmetrically arranged on both sides of the bottom support frame, each group of the support seats is rotatably connected with a pair of clamping screw rods, and the outer side of the shaft rod of the pair of clamping screw rods is symmetrically sleeved with a transmission screw sleeve, an arm force frame is arranged between the two horizontally opposite groups of transmission screw sleeves, and the plate frame of the arm force frame is symmetrically slidably connected with a guide sleeve, and the guide sleeve is fixedly connected to the outer clamp arm in one piece;

[0008] The internal support fixing mechanism includes a tensioning seat installed inside the workbench frame, the support of the tensioning seat is rotatably connected to a rotating table, and a spiral guide rail is arranged at the upper end of the rotating table, the slide rail of the spiral guide rail is slidably connected to four groups of guide tooth rows in a cross-symmetrical form, and the upper ends of the tooth blocks of the four groups of guide tooth rows are symmetrically provided with internal support clamping arms.

[0009] As a further solution of the utility model: one end of the shaft rod of the two groups of clamping screw rods is provided with a synchronous pulley, and the two groups of synchronous pulleys are connected by a synchronous belt transmission, and the other end of the shaft rod of one group of the clamping screw rods is provided with a first brake motor installed on a support seat.

[0010] As a further solution of the utility model: the clamping screw rods are bounded by a center line, and positive and negative thread teeth that are compatible with two groups of transmission thread sleeves are symmetrically arranged on both sides of the center line.

[0011] As a further solution of the utility model: a transmission shaft is rotatably connected to one side of the support of the tensioning seat, a second brake motor installed on the tensioning seat is arranged at one end of the shaft of the transmission shaft, and a transmission worm is arranged in the middle of the shaft of the transmission shaft, and a transmission worm wheel meshing with the transmission worm is arranged in the middle of the rotating table.

[0012] As a further solution of the utility model: the upper end surface of the tensioning seat is provided with a track slide groove adapted to the guide tooth row in a cross form, and the upper end surface of the tensioning seat is flush with the upper table surface of the tooling table.

[0013] As a further solution of the utility model: the plate surface of the arm frame is arranged with multiple groups of alignment holes, the buckle surface of the guide sleeve is provided with positioning holes opposite to the alignment holes, and the matching ends of the alignment holes and the positioning holes are inserted with fastening bolts.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] When the milling fixture is used as the mechanical fixture of the brake drum, the utility model uses the workbench as the clamping platform of the brake drum, and then the external clamping fixing mechanism and the internal support fixing mechanism are assembled and combined to perform mechanical clamping and fixing work in the form of internal support or external clamping on the brake drum, and can also perform double clamping and fixing work in the form of internal and external forms on the brake drum. It has a double clamping ability and can adapt to the internal and external clamping work of the brake drum without frequent replacement of the fixture. While it has better flexibility and adaptability, the mechanical clamping ability is more efficient and can adapt to the clamping and fixing work of brake drums of different sizes and models. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a milling fixture structure of a brake drum machining center of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the outer clamp fixing mechanism in the milling fixture structure of a brake drum machining center of the utility model;

[0018] Figure 3 The utility model is a structural schematic diagram of an inner support fixing mechanism in a milling fixture structure of a brake drum machining center.

[0019] In the figure: 1. bottom support frame; 2. workbench; 3. tensioning seat; 4. inner support clamp arm; 5. support seat; 6. clamping screw rod; 7. transmission thread sleeve; 8. arm force frame; 9. outer clamping arm; 10. first brake motor; 11. synchronous pulley; 12. synchronous belt; 13. alignment holes; 14. positioning socket; 15. guide sleeve; 16. fastening bolt; 17. rotating table; 18. spiral guide rail; 19. guide gear row; 20. second brake motor; 21. transmission worm; 22. transmission shaft; 23. transmission worm wheel. DETAILED DESCRIPTION

[0020] 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 described below in conjunction with specific implementation methods.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Please refer to Figure 1-3As shown, a milling fixture structure of a brake drum machining center includes a bottom support frame 1 and a tooling table 2 installed on the upper end of the bottom support frame 1. The upper end of the bottom support frame 1 is provided with an external clamping fixing mechanism along the circumference of the tooling table 2. The external clamping fixing mechanism includes support seats 5 symmetrically arranged on both sides of the bottom support frame 1. Each group of support seats 5 is rotatably connected to a clamping screw rod 6 inside the support. One end of the shaft rod of the two groups of clamping screw rods 6 is provided with a synchronous pulley 11, and the two groups of synchronous pulleys 11 are connected through a synchronous belt 12. The other end of the shaft rod of one group of clamping screw rods 6 is provided with a first brake motor 10 installed on the support seat 5. By controlling the rotation of the first brake motor 10 and under the transmission combination of the synchronous pulley 11 and the synchronous belt 12, the two groups of clamping screw rods 6 are driven to rotate synchronously. As a driving source, the external clamping arms 9 are driven to close symmetrically to externally clamp and fix the brake drum component.

[0024] The outer side of the shaft of the clamping screw rod 6 is symmetrically sleeved with a transmission screw sleeve 7, and an arm force frame 8 is arranged between the two horizontally opposite groups of transmission screw sleeves 7. The clamping screw rod 6 is bounded by the center line, and the two sides of the center line are symmetrically provided with positive and negative thread teeth adapted to the two groups of transmission screw sleeves 7. During the rotation of the clamping screw rod 6, the positive and negative thread teeth are utilized to push the combination of the transmission screw sleeve 7 and the arm force frame 8 to symmetrically displace and slide, so that the outer clamping arms 9 are clamped, and the brake drum is mechanically fixed with the outside clamping.

[0025] The plate frame of the arm frame 8 is symmetrically slidably connected with a guide sleeve 15, and the guide sleeve 15 is integrally fixedly connected with the outer clamp arm 9. The plate surface of the arm frame 8 is arranged with multiple groups of calibration holes 13, and the buckle surface of the guide sleeve 15 is provided with positioning holes 14 opposite to the calibration holes 13, and the mating ends of the calibration holes 13 and the positioning holes 14 are inserted with fastening bolts 16. By utilizing the guiding sliding of the guide sleeve 15 and the arm frame 8, the spacing between adjacent outer clamp arms 9 is adjusted and calibrated so as to better clamp on the outside of brake drum components of different sizes, and then after the adjustment and calibration is completed, the matching fastening bolts 16 are inserted into the mating ends of the calibration holes 13 and the positioning holes 14 for fixation.

[0026] The upper end of the frame of the bottom support frame 1 is built into the workbench 2 and is provided with an internal support fixing mechanism. The internal support fixing mechanism includes a tensioning seat 3 installed inside the frame of the workbench 2, and the support of the tensioning seat 3 is rotatably connected to a rotating table 17. One side of the support of the tensioning seat 3 is rotatably connected to a transmission shaft 22. One end of the shaft of the transmission shaft 22 is provided with a second brake motor 20 installed on the tensioning seat 3, and a transmission worm 21 is provided in the middle of the shaft of the transmission shaft 22. A transmission worm wheel 23 meshing with the transmission worm 21 is provided in the middle of the rotating table 17. By controlling the rotation of the second brake motor 20, the transmission shaft 22 is driven to rotate, and then the transmission worm 21 is driven to rotate. The meshing transmission of the transmission worm 21 and the transmission worm wheel 23 is used to drive the rotating table 17 to rotate. As a driving source, the internal support clamping arm 4 is pushed to expand and displace symmetrically, and the brake drum is clamped and fixed in the form of internal support.

[0027] A spiral guide rail 18 is provided at the upper end of the rotating table 17, and the slide rail of the spiral guide rail 18 is slidably connected with four groups of guide tooth rows 19 in a cross-symmetrical form, and the upper ends of the tooth blocks of the four groups of guide tooth rows 19 are symmetrically provided with inner support clamping arms 4, and the upper end surface of the tensioning seat 3 is provided with a track slide groove compatible with the guide tooth row 19 in a cross-shaped manner, and the upper end surface of the tensioning seat 3 is flush with the upper table surface of the workbench 2. When the rotating table 17 rotates, it pushes the spiral guide rail 18 to rotate, and then pushes the guide tooth row 19 on its guide rail to slide symmetrically along the direction of its slide rail, converting the rotational thrust into a clamping thrust, pushing the inner support clamping arm 4 to expand and displace symmetrically, and clamping and fixing the brake drum in an inner support form, and by setting the tensioning seat 3 and the workbench 2 to be flush, the placement of the brake drum can be facilitated.

[0028] The working principle of the utility model is as follows: when the brake drum is clamped and processed by the milling fixture, the brake drum component to be processed is placed flat on the tooling table 2, and then the brake drum is clamped and fixed in the form of external clamping or internal support according to the processing requirements;

[0029] When the brake drum needs to be externally clamped and fixed, the first brake motor 10 is controlled to rotate, and under the transmission combination of the synchronous pulley 11 and the synchronous belt 12, the two sets of clamping screw rods 6 are driven to rotate synchronously. During the rotation of the clamping screw rods 6, the positive and negative thread teeth are used to push the combination of the transmission thread sleeve 7 and the arm frame 8 to slide symmetrically, so that the external clamping arm 9 is clamped and displaced, and the brake drum is mechanically fixed externally;

[0030] When the brake drum needs to be clamped and fixed by internal support, the second brake motor 20 is controlled to rotate, driving the transmission shaft 22 to rotate, and the transmission combination of the transmission worm 21 and the transmission worm wheel 23 is used to drive the rotating table 17 to rotate. While the rotating table 17 rotates, the spiral guide rail 18 is driven to rotate, and then the guide tooth row 19 on the guide rail is driven to slide symmetrically along the direction of the slide rail, and the rotational thrust is converted into a clamping thrust, which drives the internal support clamp arm 4 to expand and displace symmetrically, so as to clamp and fix the brake drum in the form of internal support;

[0031] And according to the needs, the brake drum can also be double clamped and fixed inside and outside to improve its clamping and fixing stability. It has better flexibility and adaptability, and the mechanical clamping capacity is more efficient, which can adapt to the stable clamping and fixing processing of brake drums of different sizes and models.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A milling fixture structure for a brake drum machining center, characterized in that: It comprises a bottom support frame (1) and a tooling table (2) installed on the upper end of the bottom support frame (1); An outer clamp fixing mechanism is arranged at the upper end of the frame of the bottom support frame (1) along the circumference of the tooling platform (2), and an inner support fixing mechanism is arranged at the upper end of the frame of the bottom support frame (1) built into the tooling platform (2); The outer clamp fixing mechanism comprises support seats (5) symmetrically arranged on both sides of the bottom support frame (1), each group of the support seats (5) is rotatably connected to a pair of clamping screw rods (6), and the outer side of the shaft of the pair of clamping screw rods (6) is symmetrically sleeved with a transmission screw sleeve (7), an arm frame (8) is arranged between two groups of transmission screw sleeves (7) facing each other horizontally, and the plate frame of the arm frame (8) is symmetrically slidably connected with a guide sleeve (15), and the guide sleeve (15) is integrally fixedly connected to the outer clamping arm (9); The internal support fixing mechanism comprises a tensioning seat (3) installed inside a workbench (2), a support of the tensioning seat (3) being rotatably connected to a rotating table (17), and a spiral guide rail (18) is provided at the upper end of the rotating table (17), the slide rail of the spiral guide rail (18) being slidably connected to four groups of guide tooth rows (19) in a cross-symmetrical manner, and the upper ends of the tooth blocks of the four groups of guide tooth rows (19) are symmetrically provided with internal support clamping arms (4).

2. The milling fixture structure for a brake drum machining center according to claim 1 is characterized in that: One end of the shaft of the two sets of clamping screw rods (6) is provided with a synchronous pulley (11), and the two sets of synchronous pulleys (11) are connected by a synchronous belt (12). The other end of the shaft of one set of the clamping screw rods (6) is provided with a first brake motor (10) mounted on the support seat (5).

3. The milling fixture structure for a brake drum machining center according to claim 1 is characterized in that: The clamping screw rod (6) is bounded by a center line, and positive and negative thread teeth that match the two sets of transmission thread sleeves (7) are symmetrically arranged on both sides of the center line.

4. The milling fixture structure for a brake drum machining center according to claim 1 is characterized in that: A transmission shaft (22) is rotatably connected to one side of a support of the tensioning seat (3); a second brake motor (20) mounted on the tensioning seat (3) is provided at one end of a shaft of the transmission shaft (22); a transmission worm (21) is provided in the middle of the shaft of the transmission shaft (22); and a transmission worm wheel (23) meshing with the transmission worm (21) is provided in the middle of the rotating platform (17).

5. The milling fixture structure for a brake drum machining center according to claim 1 is characterized in that: The upper end surface of the tensioning seat (3) is provided with a rail sliding groove matched with the guide tooth row (19) in a cross-shaped manner, and the upper end surface of the tensioning seat (3) is arranged flush with the upper surface of the tooling table (2).

6. The milling fixture structure for a brake drum machining center according to claim 1, characterized in that: The plate surface of the arm support (8) is provided with a plurality of groups of alignment holes (13), the buckle surface of the guide sleeve (15) is provided with positioning holes (14) opposite to the alignment holes (13), and the mating ends of the alignment holes (13) and the positioning holes (14) are inserted with fastening bolts (16).

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