Special milling clamp for gear chamber

Abstract

The utility model relates to a special milling fixture for a gear chamber, which comprises a rectangular bearing bottom plate, mounting notches are respectively formed at the front end and the rear end of the left side and the right side of the bearing bottom plate, T-shaped bolt components are arranged in the mounting notches, and the bearing bottom plate is fixedly connected with a processing platform of a milling machine through the T-shaped bolt components; a plurality of positioning pin holes are formed in the middle of the bearing bottom plate, a plurality of positioning pins matched with the gear chamber are inserted into the positioning pin holes, and the upper ends of the positioning pins are inserted into the pin holes of the gear chamber; cylindrical positioning cushion blocks abut against the periphery of the gear chamber, the positioning cushion blocks are fixedly connected to the bearing bottom plate through screws, and a plurality of pressing and holding assemblies matched with the positioning cushion blocks are arranged on the periphery of the gear chamber. The milling clamp is suitable for clamping various gear chambers, meanwhile, clamping is convenient and fast, and the stability after clamping and fixing is good; and the production cost can be effectively saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of milling fixture, more particularly to a special milling fixture for gear chamber. BACKGROUND

[0002] With the development of engine industry in China, the production efficiency of diesel engine is required higher and higher, the original milling fixture for fixed gear chamber can not meet the production requirement. In order to meet the production, reduce the waste caused by the damage of processing due to not fixing well, and ensure the production rhythm and inspection efficiency, the existing fixture must be changed, and the milling fixture is required to have certain universality, can meet the processing of multiple gear chambers, the original independent milling fixture can be standardized, the number of fixture and the replacement of fixture can be reduced, the production cost can be reduced, when the milling fixture is designed, the convenience of clamping gear chamber is considered, and the stability after clamping is considered. UTILITY MODEL CONTENTS

[0003] The utility model discloses a special milling fixture for gear chamber, the milling fixture is suitable for the clamping of multiple gear chambers, is convenient and fast, and is stable after clamping and fixing.

[0004] A special milling fixture for gear chamber, including the rectangular bearing bottom plate, the front and rear two ends of the left and right two side edges of bearing bottom plate are formed with the installation slot respectively, the T type bolt assembly is equipped in the installation slot, and the bearing bottom plate is fixedly connected with the processing platform of milling machine through the T type bolt assembly.

[0005] The periphery of gear chamber is abutted with the cylindrical positioning pad, the positioning pad is fixedly connected on the bearing bottom plate through the screw, the periphery of gear chamber is provided with a plurality of groups of pressure holding assemblies matched with the positioning pad, the pressure holding assembly includes the vertical set screw, the lower end of set screw is screwed on the bearing bottom plate and is screwed with the lock nut, the lock nut is pressed on the bearing bottom plate, the upper end of set screw is inserted with the strip-shaped pressing block and is screwed with the lock nut, the set screw is inserted with the spring, and the two ends of spring are pressed on the lock nut and the pressing block respectively, one end of pressing block is formed with the conical pressure head, the pressure head is pressed on the upper surface of gear chamber and is located above the positioning pad.

[0006] Preferably, the bearing bottom plate is provided with at least three groups of pressure holding assemblies, the front and rear sides of gear chamber are provided with at least one group of pressure holding assemblies, and the left side or right side of gear chamber is provided with at least one group of pressure holding assemblies.

[0007] Preferably, the opposite outer walls of the fixed stud are formed with a planar cutting groove, the lower side of the pressing block is provided with a circular limiting disc, the center of the limiting disc is formed with a limiting hole opposite to the fixed stud, and the fixed stud is inserted into the limiting hole of the limiting disc; the upper end surface of the limiting disc abuts against the pressing block, and the lower end surface abuts against the spring;

[0008] The lower end surface of the pressing block away from the pressing head is formed with a rectangular clamping groove, an L-shaped limiting block is clamped in the clamping groove, and the limiting block is formed on the outer wall of the limiting disc; the limiting disc is inserted and fixed with a vertical limiting pin, the lower end surface of the pressing block is formed with a limiting pin hole, and the upper end of the limiting pin is inserted into the limiting pin hole of the pressing block;

[0009] Preferably, the depth of the clamping groove on the pressing block is smaller than the length of the limiting pin protruding from the upper end surface of the limiting disc;

[0010] The center distance from the limiting pin to the fixed stud is smaller than the center distance from the side wall of the pressing block to the fixed stud.

[0011] Preferably, the positioning pin on the bearing bottom plate comprises a fixed pin and a movable pin;

[0012] The upper end of the fixed pin is formed with a fixed plug, and the lower end is formed with a connecting column, which is inserted and fixed in the positioning pin hole of the bearing bottom plate;

[0013] The outer wall of the movable pin is formed with a thread and is screwed with an adjusting nut, the adjusting nut is fixed with a bushing, the bushing is inserted and fixed in the positioning pin hole of the bearing bottom plate, and the lower end of the movable pin is inserted into the bushing and the upper end is formed with a movable plug.

[0014] Preferably, the T-shaped bolt assembly comprises a T-shaped bolt, and the upper end of the T-shaped bolt protrudes from the bearing bottom plate and is screwed with a fastening nut.

[0015] The beneficial effects of the utility model lie in:

[0016] The milling clamp is suitable for clamping multiple gear chambers, is convenient and fast to clamp, is stable after clamping and fixing, and can effectively save production cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a top view structural schematic diagram of the utility model;

[0018] Fig. 2 It is a half cut structure schematic diagram of the utility model;

[0019] Fig. 3 It is a three-dimensional structure schematic diagram of the inner pressing assembly of the utility model;

[0020] Fig. 4 It is a half cut structure schematic diagram of the inner pressing assembly of the utility model.

[0021] Figure: 1, bearing base plate; 11, mounting slot; 2, T-bolt assembly; 21, T-bolt; 22, fastening nut; 3, fixed column pin; 31, fixed bolt; 4, bushing; 5, adjusting nut; 6, movable column pin; 61, movable bolt; 7, positioning pad; 8, movable column pin; 81, fixed stud; 82, pressing block; 83, lock nut; 84, spring; 85, fixed stud; 86, limiting disc; 87, limiting pin; 9, gear chamber. DETAILED DESCRIPTION

[0022] Embodiment: see Figs. 1 to 4 As shown in the figure, a special milling fixture for gear chamber includes a rectangular bearing base plate 1, the front and rear ends of the left and right side edges of the bearing base plate 1 are respectively formed with mounting slots 11, T-bolt assemblies 2 are arranged in the mounting slots 11, and the bearing base plate 1 is fixedly connected with the machining platform of the milling machine through the T-bolt assemblies 2; the middle part of the bearing base plate 1 is provided with a plurality of positioning pin holes, a plurality of positioning pins matched with the gear chamber 9 are inserted into the positioning pin holes; the upper end of the positioning pin is inserted into the pin hole of the gear chamber 9.

[0023] The periphery of the gear chamber 9 is abutted by cylindrical positioning pads 7, the positioning pads 7 are fixedly connected on the bearing base plate 1 through screws, and a plurality of sets of pressing assemblies 8 matched with the positioning pads 7 are arranged around the gear chamber 9; the pressing assembly 8 includes a vertical fixed stud 81, the lower end of the fixed stud 81 is screwed on the bearing base plate 1 and is screwed with a lock nut 83, the lock nut 83 is pressed against the bearing base plate 1, the upper end of the fixed stud 81 is inserted into a strip-shaped pressing block 82 and extends out of the pressing block 82 and is screwed with a locking nut 85, a spring 84 is inserted into the fixed stud 81, and the two ends of the spring 84 are respectively pressed against the lock nut 83 and the pressing block 82, one end of the pressing block 82 is formed with a tapered pressing head 821, the pressing head 821 is pressed against the upper surface of the gear chamber 9 and is located directly above the positioning pad 7.

[0024] At least three sets of pressing assemblies 8 are arranged on the bearing base plate 1, at least one set of pressing assemblies 8 is arranged on the front and rear sides of the gear chamber 9, and at least one set of pressing assemblies 8 is arranged on the left side or the right side of the gear chamber 9, so as to prevent the side of the installed gear chamber 9 from being raised.

[0025] Plane-shaped grooves 811 are formed on the opposite outer walls of the fixed stud 81, a circular limiting disc 86 is arranged on the lower side of the pressing block 82, a limiting hole matched with the fixed stud 81 is formed in the center of the limiting disc 86, and the fixed stud 81 is inserted into the limiting hole of the limiting disc 86; the upper end surface of the limiting disc 86 is abutted against the pressing block 82, and the lower end surface is abutted against the spring 84;

[0026] The lower end face of the pressing block 82 away from the pressing head 821 is shaped with a rectangular clamping groove 822, an L-shaped limiting block 861 is clamped in the clamping groove 822, and the limiting block 861 is shaped on the outer wall of the limiting disc 86; the limiting disc 86 is inserted and fixed with a vertical limiting pin 87, and the lower end face of the pressing block 82 is shaped with a limiting pin hole 823, and the upper end of the limiting pin 87 is inserted into the limiting pin hole 823 of the pressing block 82; because the existing pressing block 82 is sleeved on the set screw 81, it can be rotated to move away from the upper side of the gear chamber 9, facilitating the clamping of the gear chamber 9; at the same time, there are defects, when the pressing block 82 presses the gear chamber 9, it cannot guarantee that the relative rotation between the pressing block 82 and the set screw 81 occurs, and the stability of the pressing block 82 is poor, so it is necessary to design a radial constraint structure between the pressing block 82 and the set screw 81; the limiting disc 86 can limit the relative rotation between the pressing block 82 and the set screw 81.

[0027] The depth of the clamping groove 822 of the pressing block 82 is less than the length of the limiting pin 87 extending out of the upper end face of the limiting disc 86; when the limiting pin 87 is separated from the pressing block 82, the limiting block 861 is also separated from the clamping groove 822; the center distance from the limiting pin 87 to the set screw 81 is less than the center distance from the side wall of the pressing block 82 to the set screw 81; when the limiting pin 87 is separated from the limiting pin hole 823, it will abut against the pressing block 82, and when the pressing block 82 rotates on the set screw 81, the pressing block 82 will not be interfered by the limiting block 861.

[0028] The positioning pin on the bearing base plate 1 includes a fixed column pin 3 and a movable column pin 6;

[0029] The upper end of the fixed column pin 3 is shaped with a fixed plug 31, and the lower end is shaped with a connecting column which is inserted and fixed in the positioning pin hole of the bearing base plate 1; the position and height of the fixed column pin 3 are set; the outer wall of the movable column pin 6 is shaped with a thread and screwed with an adjusting nut 5, the adjusting nut 5 is fixed with a bushing 4, the bushing 4 is inserted and fixed in the positioning pin hole of the bearing base plate 1, and the lower end of the movable column pin 6 is inserted into the bushing 4 and the upper end is shaped with a movable plug 61; rotating through the movable column pin 6 can adjust the height of the movable column pin 6.

[0030] The T-shaped bolt assembly 2 includes a T-shaped bolt 21, and the upper end of the T-shaped bolt 21 extends out of the bearing base plate 1 and is screwed with a fastening nut 22.

[0031] Working principle: the structure is a special milling clamp for gear chamber, the milling clamp structure is simple and compact, the horizontal position of the gear chamber 9 on the bearing base plate 1 is set based on the positioning pin, and the positioning pad 7 is used as a reference to support the gear chamber 9, so that the gear chamber 9 is separated from the bearing base plate 1, avoiding the problem of interference between the lower surface of the clamped gear chamber 9 and the bearing base plate 1, and the positioning pad 7 cooperates with the pressing assembly 8 to effectively realize the clamping and fixing of the gear chamber 9;

[0032] Meanwhile, the pressing block 82 in the pressing assembly 8 can be moved away from above the gear chamber 9 by rotating, so as to facilitate the installation and removal of the gear chamber 9 and the quick clamping of the gear chamber 9.

[0033] The embodiments are used to illustrate the present application, but not to limit the present application. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present application, and therefore the protection scope of the present application should be subject to the claims of the present application.

Claims

1. A special milling fixture for gear chamber, comprising a rectangular bearing base plate (1), the front and rear ends of the left and right side edges of the bearing base plate (1) are respectively formed with mounting notches (11), T-shaped bolt assemblies (2) are arranged in the mounting notches (11), and the bearing base plate (1) is fixedly connected with the machining platform of a milling machine through the T-shaped bolt assemblies (2); characterized in that: The middle part of the bearing bottom plate (1) is provided with a plurality of positioning pin holes, and a plurality of positioning pins matched with the gear chamber (9) are inserted into the positioning pin holes, and the upper end of the positioning pin is inserted into the pin hole of the gear chamber (9); The periphery of the gear chamber (9) is abutted by a cylindrical positioning pad (7), the positioning pad (7) is fixed on the bearing bottom plate (1) by screws, and a plurality of sets of pressing assemblies (8) matched with the positioning pad (7) are arranged around the gear chamber (9), the pressing assembly (8) comprises a vertical fixing stud (81), the lower end of the fixing stud (81) is screwed on the bearing bottom plate (1) and is screwed with a lock nut (83), the lock nut (83) is pressed on the bearing bottom plate (1), the upper end of the fixing stud (81) is inserted into a strip-shaped pressing block (82) and extends out of the pressing block (82) and is screwed with a locking nut (85), the fixing stud (81) is inserted with a spring (84), and the two ends of the spring (84) are pressed on the lock nut (83) and the pressing block (82) respectively, one end of the pressing block (82) is formed with a tapered pressing head (821), the pressing head (821) is pressed on the upper surface of the gear chamber (9) and is located directly above the positioning pad (7).

2. A special purpose milling fixture for a gear chamber as defined in claim 1, wherein: At least three sets of pressing assemblies (8) are arranged on the bearing bottom plate (1), at least one set of pressing assemblies (8) is arranged on the front and rear sides of the gear chamber (9), and at least one set of pressing assemblies (8) is arranged on the left side or the right side of the gear chamber (9).

3. A special purpose milling fixture for a gear chamber as defined in claim 1 wherein: The opposite outer walls of the fixing stud (81) are formed with a planar slot (811), the lower side of the pressing block (82) is provided with a circular limiting disc (86), the center of the limiting disc (86) is formed with a limiting hole opposite to the fixing stud (81), and the fixing stud (81) is inserted into the limiting hole of the limiting disc (86); the upper end surface of the limiting disc (86) abuts against the pressing block (82) and the lower end surface abuts against the spring (84); The lower end surface of the end of the pressing block (82) away from the pressing head (821) is formed with a rectangular clamping groove (822), an L-shaped limiting block (861) is clamped in the clamping groove (822), and the limiting block (861) is formed on the outer wall of the limiting disc (86); a vertical limiting pin (87) is inserted and fixed on the limiting disc (86), and a limiting pin hole (823) is formed on the lower end surface of the pressing block (82); the upper end of the limiting pin (87) is inserted into the limiting pin hole (823) of the pressing block (82).

4. A special purpose milling fixture for a gear chamber as defined in claim 3 wherein: The depth of the clamping groove (822) of the pressing block (82) is less than the length of the limiting pin (87) extending out of the upper end surface of the limiting disc (86); The center distance from the limiting pin (87) to the fixing stud (81) is less than the center distance from the side wall of the pressing block (82) to the fixing stud (81).

5. A special purpose milling fixture for a gear chamber as defined in claim 1 wherein: The positioning pin on the bearing bottom plate (1) comprises a fixed pin (3) and a movable pin (6); The upper end of the fixed pin (3) is formed with a fixed plug (31), and the lower end is formed with a connecting column which is inserted and fixed in the positioning pin hole of the bearing bottom plate (1); The outer wall of the movable stud (6) is formed with threads and is screwed with an adjusting nut (5), the adjusting nut (5) is fixedly connected with a bushing (4), the bushing (4) is inserted and fixed in a positioning pin hole of the bearing bottom plate (1), the lower end of the movable stud (6) is inserted in the bushing (4), and the upper end of the movable stud (6) is formed with a movable bolt (61).

6. A special purpose milling fixture for a gear chamber as defined in claim 1 wherein: The T-shaped bolt assembly (2) comprises a T-shaped bolt (21), and the upper end of the T-shaped bolt (21) extends out of the bearing bottom plate (1) and is screwed with a fastening nut (22).

Images