CN211219801U - Rear positioning device for lathe machining spindle - Google Patents

Abstract

The utility model discloses a positioner behind lathe processing main shaft relates to lathe processing technical field, and its technical scheme main points are including the main shaft, can dismantle in the through-hole of main shaft and insert and be equipped with the outer tube that is used for advancing the work piece location and coaxial inserting the locating lever of locating in the outer tube, and the cross sectional shape of locating lever is the same with the cross sectional shape of outer tube inner chamber. The positioning rod is provided with a fixing part for preventing the positioning rod from rotating in the circumferential direction in the outer sleeve, and the main shaft is provided with a fixing part for fixing the outer sleeve and an adjusting component for adjusting the depth of the positioning rod inserted into the outer sleeve. The utility model discloses a fix a position the work piece and insert the degree of depth of clamping area region in order to adjust the work piece, make lathe tool direct movement to process the region and can directly process the work piece after finely tuning again, it is simple and convenient swift to operate.

Description

Rear positioning device for lathe machining spindle

Technical Field

The utility model relates to a lathe processing technology field, more specifically say, it relates to a positioner behind lathe processing main shaft.

Background

The lathe spindle refers to a shaft on a lathe for driving a workpiece or a cutter to rotate, and generally comprises a spindle part, a bearing, a transmission part and the like. As shown in fig. 1, the spindle 3 is mounted on a lathe, one end of the spindle 3 is usually connected to a workpiece holder, and the other end of the spindle 3 is drivingly connected to an output shaft 21 of a motor 2 through a transmission belt 22.

The middle part of the main shaft 3 is usually provided with a through hole 30 which is coaxial with the main shaft 3, and after the main shaft 3 is connected with a workpiece fixture, the through hole 30 is aligned with a clamping area for placing a workpiece in the workpiece fixture. After a workpiece to be machined is placed in the clamping area, a turning tool of the lathe can move to the machining area under the action of the moving piece to machine the workpiece.

However, for the same batch of workpieces to be processed having a certain length, after the workpieces are placed in the clamping area, the end portions of the workpieces may be inserted into the through-holes 30 of the spindle 3. In the machining process, if the depth of each workpiece placed in the clamping area is different, the workpiece can be machined only after the position of the turning tool in the machining area is adjusted for multiple times to a larger extent, so that the machined workpiece meets the machining requirement.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a positioner behind lathe machining main shaft, it inserts the degree of depth of clamping area region through fixing a position the work piece in order to adjust the work piece, makes lathe tool direct movement can directly process the work piece after finely tuning again to the machining area, and is easy and simple to handle swift.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a rear positioning device for a lathe machining spindle comprises a spindle, wherein an outer sleeve for positioning a workpiece and a positioning rod coaxially inserted in the outer sleeve are detachably inserted in a through hole of the spindle, and the cross section of the positioning rod is the same as that of an inner cavity of the outer sleeve;

the positioning rod is provided with a fixing part for preventing the positioning rod from rotating in the circumferential direction in the outer sleeve;

the main shaft is provided with a fixing piece for fixing the outer sleeve and an adjusting component for adjusting the depth of the positioning rod inserted into the outer sleeve.

By adopting the technical scheme, the outer sleeve is inserted into the through hole of the main shaft, and the length of the outer sleeve is adjusted so that the distance between the end part of the outer sleeve inserted into the through hole and the clamping tool meets the requirement that a workpiece needs to be placed in a clamping area at a specific depth. Aiming at the same batch of workpieces with the same length, when a first workpiece is machined, the length of the outer sleeve inserted into the through hole of the main shaft and the turning tool need to be moved to a specific position of a machining area, when a subsequent workpiece is machined, the workpiece only needs to be placed in a clamping area, the end part of the workpiece is abutted against the end part of the outer sleeve, and the turning tool can be directly moved to the specific position to machine the workpiece after the workpiece is clamped by a clamping tool. According to the needs, only need finely tune the position of lathe tool can, need not by a wide margin regulation lathe tool in the specific position in processing region again, easy operation is swift, has effectively improved work efficiency.

In addition, when the end part of the workpiece is in a stepped shaft shape or is provided with a stepped hole, the positioning rod can be pulled or pushed to enable the end part of the outer sleeve in the through hole of the main shaft and the end part of the positioning rod to form a shape with a bulge or a recess, so that the end part of the workpiece is matched, the workpiece is better abutted against the outer sleeve or the positioning rod, and the positioning is more accurate.

Furthermore, the mounting is the locking screw of tip insertion outer tube, set up a plurality of draw-in grooves that supply the locking screw card to go into on the outer tube, it is a plurality of the draw-in groove is along the equidistant distribution of length direction of outer tube.

Through adopting above-mentioned technical scheme, utilize the outer tube of locking screw fixation, avoid the outer tube to take place the displacement in the through-hole of main shaft, avoid influencing the location effect to the work piece. When the depth of the outer sleeve and the positioning rod inserted into the through hole of the main shaft needs to be adjusted, the locking screws can be inserted into different clamping grooves to achieve the purpose of adjustment.

Furthermore, the adjusting assembly comprises an adjusting rod penetrating through the main shaft and the outer sleeve and inserted, a plurality of grooves for clamping the adjusting rod are formed in the positioning rod, and the grooves are distributed at equal intervals along the length direction of the positioning rod.

By adopting the technical scheme, when the length of the positioning rod in the outer sleeve needs to be adjusted, the adjusting rod can be pulled out of the groove, the positioning rod is further pulled or pushed, and finally the adjusting rod is inserted into the groove to fix the positioning rod.

Furthermore, the end, far away from the groove, of the adjusting rod is provided with a handheld portion, the adjusting rod is sleeved with a spring, and two ends of the spring are connected to the handheld portion and the main shaft respectively.

Through adopting above-mentioned technical scheme, utilize the spring to be connected regulation pole and main shaft, prevent to adjust the pole and drop from the main shaft.

Further, the device also comprises a supporting column and a supporting plate;

the support columns are arranged on the main shaft along the radial direction of the main shaft; the supporting plate is axially connected to the supporting column along the main shaft;

the adjusting rod is inserted in the supporting plate, a handheld part located on the supporting plate is arranged at one end, away from the groove, of the adjusting rod, the adjusting rod is sleeved with a limiting ring located on one side, away from the handheld part, of the supporting plate, and an elastic piece which provides acting force along the length direction of the adjusting rod to drive the end part of the adjusting rod to be clamped into the groove is arranged between the supporting plate and the limiting ring;

the clamping piece is used for clamping the adjusting rod to prevent the adjusting rod from being clamped into the groove.

Through adopting above-mentioned technical scheme, the length that the adjusting position pole inserted the outer tube needs certain time, will adjust the tip of pole and extract the back in the recess, can place the holder in one side that the spacing ring deviates from the spring in order to support the spacing ring, prevent to adjust the pole and block into the recess under the effect of spring in, the staff of being convenient for mediates the length that the locating pole inserted the outer tube. After the adjustment is completed, the clamping piece is taken out, and the end part of the adjusting rod is inserted into the groove to fix the positioning rod.

Further, the holder is the grip block, the grip block is offered and is used for holding the breach of adjusting the pole.

Through adopting above-mentioned technical scheme, place the grip block between spacing ring and main shaft, the breach of grip block simultaneously adjusts the pole, reaches to support the spacing ring in order to prevent to adjust the pole and block into the recess under the effect of spring.

Furthermore, the fixing part is a sliding groove arranged along the length direction of the positioning rod, and a raised line matched with the sliding groove is arranged on the inner side wall of the outer sleeve.

Through adopting above-mentioned technical scheme, the sand grip of outer tube cooperates with the spout inlay card of locating lever, avoids the locating lever to do circumferential direction in the outer tube, avoids influencing in the accurate insertion groove of regulation pole.

To sum up, the utility model discloses following beneficial effect has:

1. the outer sleeve and the positioning rod which are inserted into the through hole of the main shaft are arranged, so that the same batch of workpieces are inserted into the clamping area to the same depth to position the workpieces, the workpieces can be directly machined only by finely adjusting the turning tool, the position of the turning tool in the machining area is prevented from being greatly adjusted, the operation is simple and rapid, and the working efficiency is effectively improved;

2. the depth of the positioning rod inserted into the outer sleeve is adjusted, so that the end part of the outer sleeve positioned in the through hole of the main shaft and the end part of the adjusting rod form a concave or convex shape to be matched with the shape of the end part of a workpiece, the workpiece is better abutted against the outer sleeve or the positioning rod, and the workpiece is accurately positioned.

Drawings

FIG. 1 is a schematic view of a spindle mounted on a lathe in the prior art;

FIG. 2 is a schematic structural view of a positioning device after a spindle is machined by a lathe in embodiment 1;

FIG. 3 is a sectional view of a positioning device after a main shaft is lathed in embodiment 1;

FIG. 4 is an exploded view of a positioning device after a main shaft is lathed in accordance with embodiment 1;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a schematic structural view of a positioning device after a spindle is lathed according to embodiment 2;

FIG. 7 is an exploded view of a positioning device after a main shaft is lathed in accordance with embodiment 2;

fig. 8 is an enlarged view of a portion B in fig. 7.

In the figure: 1. a frame; 11. a chuck; 2. a motor; 21. an output shaft; 22. a transmission belt; 3. a main shaft; 30. a through hole; 31. adjusting a rod; 311. a hand-held portion; 312. a limiting ring; 32. a spring; 33. locking screws; 34. a support pillar; 35. a support plate; 4. an outer sleeve; 41. a card slot; 42. a convex strip; 5. positioning a rod; 51. a groove; 52. a chute; 6. a clamping plate; 61. and (4) a notch.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1:

the utility model provides a positioner behind lathe processing main shaft, refers to fig. 2 and 3, includes main shaft 3, and main shaft 3 offers the cylindrical through-hole 30 coaxial with main shaft 3, and main shaft 3 installs in frame 1, and the front end of main shaft 3 is connected in chuck 11, and the rear end that main shaft 3 kept away from chuck 11 passes through drive belt 22 and connects in the output shaft 21 of motor 2.

Referring to fig. 2 and 3, a cylindrical outer sleeve 4 is inserted into the through hole 30, a locking screw 33 is mounted on the outer circumferential side wall of the rear end of the spindle 3, and the end of the locking screw 33 penetrates through the spindle 3 along the radial direction of the spindle 3 and is inserted into the outer sleeve 4 to fix the outer sleeve 4. The outer sleeve 4 is provided with a plurality of slots 41 for the end of the locking screw 33 to be clamped in, and the slots 41 are distributed at equal intervals along the axis of the outer sleeve 4. When the length of the outer sleeve 4 inserted into the through hole 30 of the spindle 3 needs to be adjusted, the locking screw 33 can be screwed out of the slot 41, and after the outer sleeve 4 is pulled or pushed, the locking screw 33 is screwed into the slot 41 to fix the outer sleeve 4.

Referring to fig. 4 and 5, a cylindrical positioning rod 5 coaxial with the outer sleeve 4 is inserted into the outer sleeve 4. The outer peripheral side wall of the positioning rod 5 is provided with a sliding groove 52 with a hemispherical cross section along the axis of the positioning rod 5, and the inner peripheral side wall of the outer sleeve 4 is provided with a convex strip 42 clamped into the sliding groove 52 along the axis of the outer sleeve 4, so that the positioning rod 5 is prevented from rotating in the inner peripheral direction of the outer sleeve 4.

Referring to fig. 2 and 5, a cylindrical adjusting rod 31 is inserted into the peripheral side wall of the rear end of the main shaft 3 along the radial direction of the main shaft 3, the end of the adjusting rod 31 penetrates through the main shaft 3 and the outer sleeve 4 and then is inserted into the positioning rod 5, the positioning rod 5 is provided with a plurality of grooves 51 for inserting the adjusting rod 31, and the plurality of grooves 51 are arranged at equal intervals along the axis of the positioning rod 5. The end of the adjustment lever 31 remote from the recess 51 is provided with a cylindrical hand-held portion 311. The adjusting rod 31 is sleeved with a spring 32, two ends of the spring 32 are respectively connected to the handheld part 311 and the main shaft 3, and the adjusting rod 31 can be prevented from sliding off the main shaft 3 in the process of adjusting the insertion depth of the positioning rod 5.

The working principle is as follows: the outer sleeve 4 and the positioning rod 5 are inserted into the through hole 30 of the spindle 3, and the end part of the outer sleeve 4 positioned in the through hole 30 is flush with the end part of the positioning rod 5 positioned in the through hole 30. The workpiece is placed in the clamping area, and the end part of the workpiece is abutted against the end parts of the outer sleeve 4 and the positioning rod 5, so that the purpose of positioning the workpiece is achieved.

When the depth of the workpiece in the clamping area needs to be adjusted, the locking screw 33 can be screwed out, the adjusting rod 31 is pulled at the same time, the end part of the adjusting rod 31 is pulled out from the positioning rod 5 and the outer sleeve 4, the outer sleeve 4 is pulled or pushed, the outer sleeve 4 and the positioning rod 5 move together, the length of the outer sleeve 4 inserted into the through hole 30 is adjusted, and therefore the purpose of adjusting the depth of the workpiece in the clamping area is achieved.

To the same batch of work pieces of the same length, accomplish and adjust the degree of depth that the work piece is located clamping area for the first time after, subsequent work piece can directly place clamping area, contradict the tip of work piece in the tip of outer tube 4 and locating lever 5 to can directly remove the lathe tool on the lathe to the specific position in machining area. The workpiece can be directly machined after the position of the turning tool is finely adjusted, the position of the turning tool in a machining area does not need to be adjusted to a large extent, and the adjusting time is saved. The embodiment is simple and quick to operate, and improves the working efficiency to a certain extent.

Example 2:

a post-positioning device for a lathe machining spindle, which is based on embodiment 1 and differs from embodiment 1 in reference to fig. 6, 7 and 8 in that: two opposite square support columns 34 are arranged on the peripheral side wall of the main shaft 3 along the radial direction of the main shaft 3, and one end, far away from the main shaft 3, of each support column 34 is provided with a square support plate 35 along the axis of the main shaft 3. The adjusting rod 31 is inserted into the supporting plate 35, and the handle 311 is located on a side of the supporting plate 35 away from the main shaft 3. The adjusting rod 31 is sleeved with a limiting ring 312, and the limiting ring 312 is located between the supporting plate 35 and the main shaft 3. The adjusting rod 31 is sleeved with a spring 32, and the spring 32 is located between the supporting plate 35 and the limiting ring 312.

Referring to fig. 7 and 8, when the length of the outer sleeve 4 and the positioning rod 5 inserted into the through hole 30 of the spindle 3 needs to be adjusted, or the length of the positioning rod 5 inserted into the outer sleeve 4 needs to be adjusted, since the adjustment requires a certain time, after the end of the adjustment rod 31 is pulled out of the groove 51, the clamping plate 6 can be placed under the limiting ring 312 to support the limiting ring 312 to prevent the adjustment rod 31 from being inserted into the groove 51 under the elastic force of the spring 32.

Referring to fig. 7 and 8, the clamping plate 6 is square, and a U-shaped notch 61 is opened on a side of the clamping plate 6 to accommodate the adjusting rod 31. After the adjustment is completed, the clamping plate 6 can be removed from under the stop ring 312 so that the end of the adjustment rod 31 is inserted into the groove 51. In the process of adjusting the length of the outer sleeve 4 and the positioning rod 5 inserted into the through hole 30 and the length of the positioning rod 5 inserted into the outer sleeve 4, the adjusting rod 31 needs to be pulled out by different lengths, so the clamping plate 6 can be designed to have different thicknesses for supporting the limiting ring 312 in different adjusting processes.

The above-mentioned embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws and protection within the scope of the present invention.

Claims (7)

1. The utility model provides a positioner behind lathe processing main shaft, includes main shaft (3), its characterized in that: an outer sleeve (4) used for positioning a workpiece and a positioning rod (5) coaxially inserted in the outer sleeve (4) are detachably inserted in the through hole (30) of the spindle (3), and the cross section of the positioning rod (5) is the same as that of the inner cavity of the outer sleeve (4);

the positioning rod (5) is provided with a fixing part for preventing the positioning rod (5) from rotating in the inner circumferential direction of the outer sleeve (4);

the main shaft (3) is provided with a fixing piece for fixing the outer sleeve (4) and an adjusting assembly for adjusting the depth of the positioning rod (5) inserted into the outer sleeve (4).

2. The post-lathe-machining spindle positioning device according to claim 1, wherein: the mounting inserts locking screw (33) of outer tube (4) for the tip, set up a plurality of confession locking screw (33) card income draw-in grooves (41) on outer tube (4), it is a plurality of the equidistant distribution of length direction along outer tube (4) is followed in draw-in groove (41).

3. The post-lathe-machining spindle positioning device according to claim 1, wherein: the adjusting assembly comprises an adjusting rod (31) which penetrates through the main shaft (3) and the outer sleeve (4) and is inserted, a plurality of grooves (51) for clamping the adjusting rod (31) are formed in the positioning rod (5), and the grooves (51) are distributed at equal intervals along the length direction of the positioning rod (5).

4. The post-lathe-machining spindle positioning device according to claim 3, wherein: one end, far away from the groove (51), of the adjusting rod (31) is provided with a handheld portion (311), the adjusting rod (31) is sleeved with a spring (32), and two ends of the spring (32) are connected to the handheld portion (311) and the main shaft (3) respectively.

5. The post-lathe-machining spindle positioning device according to claim 3, wherein: also comprises a supporting column (34) and a supporting plate (35);

the supporting columns (34) are arranged on the main shaft (3) along the radial direction of the main shaft (3); the supporting plate (35) is axially connected to the supporting column (34) along the main shaft (3);

the adjusting rod (31) is inserted in the supporting plate (35), a handheld portion (311) located on the supporting plate (35) is arranged at one end, far away from the groove (51), of the adjusting rod (31), a limiting ring (312) located on one side, far away from the handheld portion (311), of the supporting plate (35) is sleeved on the adjusting rod (31), and an elastic piece providing acting force along the length direction of the adjusting rod (31) to drive the end portion of the adjusting rod (31) to be clamped into the groove (51) is arranged between the supporting plate (35) and the limiting ring (312);

the clamping device is used for clamping the adjusting rod (31) to prevent the adjusting rod (31) from being clamped into the groove (51).

6. The post-lathe-machining spindle positioning device according to claim 5, wherein: the clamping piece is a clamping plate (6), and a notch (61) used for accommodating the adjusting rod (31) is formed in the clamping plate (6).

7. The post-lathe-machining spindle positioning device according to claim 1, wherein: the fixing part is a sliding groove (52) formed in the length direction of the positioning rod (5), and a convex strip (42) matched with the sliding groove (52) is arranged on the inner side wall of the outer sleeve (4).

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