Machining and positioning mechanism for outer circle of spindle box

Abstract

The utility model discloses a spindle box body outer circle machining positioning mechanism which comprises a rotary positioning mechanism, a fixed base, a fixed shaft, a spindle and a chuck, and is characterized in that the fixed shaft is arranged on the fixed base and fixed through a locking frame, the fixed shaft is provided with a rotary groove, the spindle is rotationally arranged in the rotary groove, and the chuck is arranged on the rotary positioning mechanism. A right end cover is installed at the end of the fixing shaft through a bolt, a plurality of abutting block grooves communicated with the main shaft are formed in the right end cover and evenly arranged along the outer wall of the main shaft, abutting blocks are arranged in the abutting block grooves in a sliding mode, sliding grooves communicated with the abutting block grooves are formed in the end face of the right end cover and correspond to the abutting block grooves, and sliding rods penetrating through the sliding grooves are fixedly arranged on the abutting blocks. The right end cover is rotationally provided with a rotating disc controlling the sliding rods to move at the same time, a fixing frame is fixedly arranged at the position, located on the outer side of the rotating disc, of the end face of the right end cover, a rotating air cylinder is fixedly arranged on the fixing frame, and the rotating disc is coaxially and fixedly connected with a fixing shaft fixedly connected with the output end of the rotating air cylinder. Therefore, loss of the motor is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of spindle box positioning mechanisms, in particular to a spindle box outer circle machining positioning mechanism. Background Art

[0002] The spindle box is an important component of the machine tool. It is used to arrange the working spindle of the machine tool and its transmission parts and corresponding additional mechanisms. The spindle box adopts multi-stage gear transmission. Through a certain transmission system, through the transmission gears and transmission shafts at various positions in the spindle box, the motion is finally transmitted to the spindle, so that the spindle obtains the specified speed and direction.

[0003] The outer circle of the spindle box body has multiple surfaces. When processing the outer circle of the spindle box body, it needs to be continuously rotated to facilitate the processing of each surface. Usually, the two ends of the spindle box body are fixed by two processing positioning mechanisms. A motor is installed in the positioning mechanism on one side to rotate and fix the spindle box body, and then the various surfaces of the outer circle of the spindle box body are processed. Since the spindle box body has a certain weight and a large fixing force is required during processing to prevent the spindle box body from rotating, the spindle box body is limited only by starting and stopping the motor. The motor bears a large load and the loss to the motor is extremely great. Utility Model Content

[0004] The utility model aims to provide a spindle box outer circle machining positioning mechanism to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spindle box outer circle machining positioning mechanism, comprising a rotation positioning mechanism, a three-jaw self-centering chuck arranged on the rotation positioning mechanism, a fixed base, a first fixed shaft, a spindle and a chuck installed on the spindle, the first fixed shaft is arranged on the fixed base and fixed by a locking frame, the first fixed shaft is provided with a rotation groove, the spindle is rotatably arranged in the rotation groove, the end of the first fixed shaft is provided with a right end cover rotatably connected to the spindle by bolts, the right end cover is provided with a A plurality of clamping block grooves connected to the shaft are evenly arranged along the outer wall of the main shaft, a clamping block for abutting against the main shaft is slidably arranged in the clamping block groove, a slide groove connected to the clamping block groove is opened corresponding to the end face of the right end cover and the clamping block groove, a slide rod passing through the slide groove is fixed on the clamping block, a turntable for controlling the slide rod to move simultaneously is rotatably provided on the right end cover, a fixing frame is fixedly arranged on the end face of the right end cover outside the turntable, a rotating cylinder is fixedly arranged on the fixing frame, and the turntable is coaxially fixedly connected with a second fixed shaft fixedly connected to the output end of the rotating cylinder.

[0006] Preferably, a limiting ring groove is opened on the side of the rotating groove away from the right end cover, the fixing sleeve on the outer wall of the main shaft is provided with a limiting ring rotatably connected to the limiting ring groove, and the end face of the first fixed shaft is fixed with a left end cover affixed to the limiting ring by bolts.

[0007] Preferably, the turntable is coaxially arranged with the main shaft, a control groove is opened on the turntable corresponding to the slide groove and is evenly arranged around the axis of the turntable, the slide rod passes through the control groove and is slidably connected to the control groove, the control groove is an arc groove and one side is inclined toward the center of the turntable.

[0008] Preferably, one end of the sliding rod located outside the turntable is fixedly connected with a cover plate, and the cover plate is in contact with the end surface of the turntable.

[0009] Preferably, the abutting end of the abutting block is an arc surface that fits the outer wall of the main shaft, and the width of the sliding groove is smaller than the width of the abutting block groove.

[0010] Preferably, an annular groove is provided on the end surface of the right end cover, and a convex ring rotatably connected to the annular groove is fixedly provided on the end surface of the turntable.

[0011] Compared with the prior art, the utility model has the following beneficial effects: through the arrangement of the clamping block groove, the clamping block, the slide groove, the slide rod, the turntable, the control groove, the fixed frame and the rotating cylinder, the rotating cylinder drives the first fixed shaft to rotate and thus drives the turntable to rotate, the turntable rotates, the control groove applies force to the slide rod, the slide rod drives the clamping block to slide in the slide groove so that the clamping block simultaneously moves and clamps the main shaft, fixes the main shaft, thereby providing fixing force to the main shaft box body, avoiding that the fixing force of the main shaft box body is entirely borne by the motor, and reducing the loss of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 is a schematic diagram of the rotary positioning mechanism and the fixed positioning mechanism of this embodiment;

[0014] Figure 2 is a cross-sectional view of the fixed positioning mechanism of this embodiment;

[0015] Figure 3 It is an enlarged view of point A of this embodiment;

[0016] Figure 4 This is a cross-sectional view of the right end cover of this embodiment at the abutment block groove;

[0017] Figure 5 This is a cutaway view of the right end cover chute of this embodiment;

[0018] Figure 6 It is a schematic diagram of the embodiment in which the right end cover is not provided with a fixing frame.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Rotary positioning mechanism; 2. Three-jaw self-centering chuck; 3. Fixed base; 4. First fixed axis; 5. Locking frame; 6. Chuck; 7. Rotating groove; 8. Spindle; 9. Limiting ring groove; 10. Limiting ring; 11. Left end cover; 12. Right end cover; 13. Clamping block groove; 14. Clamping block; 15. Slide groove; 16. Slide rod; 17. Turntable; 18. Control groove; 19. Cover plate; 20. Ring groove; 21. Convex ring; 22. Fixed frame; 23. Second fixed axis; 24. Rotary cylinder. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-6 The utility model provides a technical solution: a spindle box outer circle processing positioning mechanism, including a rotation positioning mechanism 1, a three-jaw self-centering chuck 2 arranged on the rotation positioning mechanism 1, a fixed base 3, a first fixed shaft 4, a spindle 8 and a chuck 6 installed on the spindle 8, the first fixed shaft 4 is arranged on the fixed base 3 and fixed by a locking frame 5, the first fixed shaft 4 is provided with a rotation groove 7, the spindle 8 is rotatably arranged in the rotation groove 7, the end of the first fixed shaft 4 is installed with a right end cover 12 rotatably connected to the spindle 8 by bolts, the right end cover 12 is provided with a tightening block groove 13 connected to the spindle 8 and along the spindle The outer wall of the shaft 8 is evenly provided with a plurality of clamping blocks 14 for abutting against the main shaft 8, which are slidably provided in the clamping block groove 13; a slide groove 15 connected with the clamping block groove 13 is opened corresponding to the end face of the right end cover 12 and corresponding to the clamping block groove 13; a slide rod 16 passing through the slide groove 15 is fixedly provided on the clamping block 14; a turntable 17 for controlling the slide rod 16 to move simultaneously is rotatably provided on the right end cover 12; a fixing frame 22 is fixedly provided on the end face of the right end cover 12 outside the turntable 17; a rotating cylinder 24 is fixedly provided on the fixing frame 22; and the turntable 17 is coaxially fixedly connected with a second fixed shaft 23 fixedly connected to the output end of the rotating cylinder 24.

[0023] Specifically, a limiting ring groove 9 is opened on the side of the rotating groove 7 away from the right end cover 12, and a limiting ring 10 rotatably connected to the limiting ring groove 9 is provided on the outer wall fixed sleeve of the main shaft 8. The end face of the first fixed shaft 4 is fixed with a left end cover 11 attached to the limiting ring 10 by bolts, thereby ensuring the stability of the rotation of the main shaft 8 in the rotating groove 7.

[0024] Specifically, the turntable 17 is coaxially arranged with the main shaft 8, and a control groove 18 is opened on the turntable 17 corresponding to the slide groove 15 and is evenly arranged around the axis of the turntable 17. The slide rod 16 passes through the control groove 18 and is slidably connected with the control groove 18. The control groove 18 is an arc groove and one side is inclined toward the center of the turntable 17. When the turntable 17 rotates, the control groove 18 acts on the slide rod 16, and the slide rod 16 slides in the slide groove 15 and drives the clamping block 14 to slide in the clamping block groove 13, so that the clamping block 14 is moved to clamp the main shaft 8 at the same time to fix the main shaft 8.

[0025] Specifically, one end of the slide bar 16 outside the turntable 17 is fixedly connected with a cover plate 19 , and the cover plate 19 fits with the end surface of the turntable 17 to improve the rotation stability of the turntable 17 .

[0026] Specifically, the clamping end of the clamping block 14 is an arc surface that fits with the outer wall of the main shaft 8, which increases the contact area between the clamping block 14 and the main shaft 8, thereby increasing the clamping force. The width of the slide groove 15 is smaller than the width of the clamping block groove 13, ensuring the sliding stability of the clamping block 14 and preventing the clamping block 14 from sliding out of the clamping block groove 13 through the slide groove 15.

[0027] Specifically, a ring groove 20 is formed on the end surface of the right end cover 12 , and a convex ring 21 rotatably connected to the ring groove 20 is fixedly formed on the end surface of the turntable 17 . The convex ring 21 and the ring groove 20 are coaxially arranged with the main shaft 8 , so as to further improve the rotation stability of the turntable 17 .

[0028] A specific application example of this embodiment is:

[0029] When the device is in use, one end of the spindle housing is fixed to the three-grip self-centering chuck 2, and the other end is fixed to the chuck 6. The rotary positioning mechanism 1 drives the three-grip self-centering chuck 2 to rotate through the motor and drives the spindle housing to rotate (this is the prior art). The chuck 6 follows the rotation of the spindle housing and drives the spindle 8 to rotate in the rotating groove 7. When it rotates to the required processing surface, the motor stops working, the spindle housing is fixed, and the rotating cylinder 24 is started. The rotating cylinder 24 drives the second fixed shaft 23 to rotate, thereby driving the turntable 17 to rotate. The turntable 17 rotates, and the control groove 18 acts on the slide bar 16. The slide bar 16 slides in the slide groove 15 and drives the clamping block 14 to slide in the clamping block groove 13, so that the clamping block 14 moves and clamps the spindle 8 at the same time, fixes the spindle 8, thereby providing a fixing force to the spindle housing, avoiding that the fixing force of the spindle housing is entirely borne by the motor, and reducing the loss of the motor.

[0030] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the drawings, which 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 operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that modifications may be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spindle box outer circle machining positioning mechanism, comprising a rotary positioning mechanism (1), a three-jaw self-centering chuck (2) arranged on the rotary positioning mechanism (1), a fixed base (3), a first fixed shaft (4), a spindle (8) and a chuck (6) installed on the spindle (8), characterized in that: The first fixed shaft (4) is arranged on the fixed base (3) and is fixed by a locking frame (5); the first fixed shaft (4) is provided with a rotation groove (7), the main shaft (8) is rotatably arranged in the rotation groove (7), the end of the first fixed shaft (4) is provided with a right end cover (12) rotatably connected to the main shaft (8) by bolts, the right end cover (12) is provided with a locking block groove (13) connected to the main shaft (8) and a plurality of locking blocks (14) are evenly arranged along the outer wall of the main shaft (8), the locking block groove (13) is slidably provided with a locking block (14) for abutting against the main shaft (8), the right end cover (12) ) is provided with a slide groove (15) communicating with the clamping block groove (13) on its end surface corresponding to the clamping block groove (13); a slide rod (16) passing through the slide groove (15) is fixedly provided on the clamping block (14); a turntable (17) for controlling the slide rod (16) to move simultaneously is rotatably provided on the right end cover (12); a fixing frame (22) is fixedly provided on the end surface of the right end cover (12) outside the turntable (17); a rotating cylinder (24) is fixedly provided on the fixing frame (22); and a second fixed shaft (23) fixedly connected to the output end of the rotating cylinder (24) is coaxially fixedly connected to the turntable (17).

2. The spindle box outer circle machining positioning mechanism according to claim 1, characterized in that: A limiting ring groove (9) is provided on a side of the rotating groove (7) away from the right end cover (12); a limiting ring (10) rotatably connected to the limiting ring groove (9) is provided on the outer wall fixing sleeve of the main shaft (8); and a left end cover (11) abutting against the limiting ring (10) is fixed to the end surface of the first fixed shaft (4) away from the right end cover (12) by bolts.

3. The spindle box outer circle machining positioning mechanism according to claim 1, characterized in that: The turntable (17) is coaxially arranged with the main shaft (8). A control groove (18) is formed on the turntable (17) corresponding to the slide groove (15) and is evenly arranged around the axis of the turntable (17). The slide rod (16) passes through the control groove (18) and is slidably connected to the control groove (18). The control groove (18) is an arc groove and one side of the control groove is inclined toward the center of the turntable (17).

4. The spindle box outer circle machining positioning mechanism according to claim 1, characterized in that: One end of the sliding rod (16) located outside the rotating disk (17) is fixedly connected to a cover plate (19), and the cover plate (19) is in contact with the end surface of the rotating disk (17).

5. The spindle box outer circle machining positioning mechanism according to claim 1, characterized in that: The abutting end of the abutting block (14) is an arc surface that fits the outer wall of the main shaft (8), and the width of the sliding groove (15) is smaller than the width of the abutting block groove (13).

6. The spindle box outer circle machining positioning mechanism according to claim 1, characterized in that: The end surface of the right end cover (12) is provided with an annular groove (20), and the end surface of the rotating disk (17) is fixedly provided with a convex ring (21) rotatably connected to the annular groove (20).

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