Lathe spindle hole positioning device

Abstract

The utility model provides a lathe spindle hole positioning device which comprises a first expansion core and a second expansion core which are arranged in a mirror image mode, a locking rod is arranged in the first expansion core, a positioning screw is arranged in the second expansion core, the locking rod comprises a screw portion and a polished rod portion, a hexagon nut is arranged at one end of the polished rod portion, and a first flange plate and a second flange plate are arranged at one end of the first expansion core and one end of the second expansion core respectively. The tool has the advantages that the tool can be matched with a positioning screw, the positioning nut and the second expansion core are fastened, and the tool can be installed at any position in a spindle hole according to use requirements to meet the machining requirements of shaft parts of different sizes; the positioning screw is used for replacing a positioning backer to be connected with the expansion core into a whole, a short workpiece can reach the position near a lathe clamping jaw through the positioning screw, the applicability is high, the stability and the abrasion resistance of the part in the machining process are improved, and the percent of pass of workpiece machining is increased.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to numerical control lathe processing technical field, concretely relates to a lathe spindle hole positioning device. BACKGROUND

[0002] The lathe is the machine tool that mainly uses the turning tool to turn the rotating workpiece, and the lathe is the most important cutting machine tool in the metal cutting machine tool, and in the general machine manufacturing factory, the lathe is the most in quantity, and is also called the working mother machine, and the corresponding processing can be carried out on the lathe using the drill, the reamer, the reamer, the tap, the die and the knurling tool, and the function of the lathe is to cut the rotating surface and the helical surface of different sizes and shapes.

[0003] The inventor found the following defects in the specific implementation operation process:

[0004] The existing part positioning usually adopts the wooden plug or sets the flange or screw rod at the tail end of the lathe, adjusts the length of the screw rod to achieve the processing of different sizes, and the overlong screw rod will produce eccentric shaking in the processing process, and the length of the screw rod will change due to thermal expansion and cold shrinkage after being heated, which affects the processing precision and has safety hazards.

[0005] It should be noted that the above content belongs to the technical cognition of the inventor, and due to the vast and complex technical content in the field, the above content of the present application does not necessarily constitute the prior art. CONTENT OF THE UTILITY MODEL

[0006] 1. Technical problem to be solved by the utility model:

[0007] The utility model provides a lathe spindle hole positioning device to solve the technical problems in the above background technology.

[0008] 2. Technical scheme:

[0009] In order to achieve the above purpose, the utility model provides a technical scheme: a lathe spindle hole positioning device, comprising mutually mirror image arranged expansion core one and expansion core two, the expansion core one is internally provided with a locking rod, the expansion core two is internally provided with a positioning screw rod, the positioning screw rod is provided with a positioning nut, the locking rod comprises a screw rod part and a light rod part, one end of the light rod part is provided with a hexagonal nut, one end of the expansion core one and the expansion core two is respectively provided with a flange plate one and a flange plate two.

[0010] Further, the flange plate two is provided with a tension nut close to the inner side of the expansion core two, the tension nut is fixedly connected with the flange plate two, a threaded hole matched with the tension nut is formed in the flange plate two, the positioning screw rod is screwed with the threaded hole, and the screw rod part is screwed with the tension nut.

[0011] Further, the flange disc is provided with a waist-shaped hole, and the locking rod is arranged through the waist-shaped hole.

[0012] Further, the waist-shaped hole and the locking rod are respectively provided with a gasket and a sleeve, and the gasket is arranged close to one end of the hexagonal nut.

[0013] Further, the light rod part is provided with a limiting groove, and the limiting groove is provided with a clamping spring, the sleeve is arranged on the light rod part and located in the first inflation core, and the clamping spring is arranged close to the sleeve.

[0014] Further, the first inflation core and the second inflation core are hollow structures, the first inflation core and the second inflation core are combined to form a cylindrical shape, and the two end faces adjacent to the first inflation core and the second inflation core are inclined surfaces.

[0015] Further, the positioning screw and the locking rod are located on the same axis.

[0016] 3. Beneficial effects:

[0017] Compared with the prior art, the technical scheme has the following beneficial effects:

[0018] The utility model discloses the design is reasonable, can cooperate the positioning screw, and is fastened with the inflation core no.

[0019] It should be noted that the structures not introduced in the utility model are the same as or can be realized by the prior art, and are not described here. DRAWINGS

[0020] Figure 1 It is the whole structure schematic diagram of the utility model;

[0021] Figure 2 It is the whole structure explosion schematic diagram of the utility model;

[0022] Figure 3 It is the locking rod structure schematic diagram of the utility model;

[0023] Figure 4 It is the first inflation core structure schematic diagram of the utility model;

[0024] Figure 5The second expanding core structure is a schematic diagram of the utility model.

[0025] Reference signs:

[0026] 1, expanding core one; 2, expanding core two; 3, locking rod; 301, screw rod part; 3011, limiting groove; 302, polished rod part; 303, hexagonal nut; 4, positioning screw; 5, flange plate one; 501, waist-shaped hole; 6, flange plate two; 601, threaded hole; 7, expanding nut; 8, gasket; 9, sleeve; 10, clamping spring; 11, positioning nut. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings, wherein several embodiments of the utility model are given, however, the utility model can be realized in many different forms, and is not limited to the embodiments described herein, on the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0028] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0029] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0030] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing", "provided with", "provided in" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. EMBODIMENT

[0031] Refer to the attached drawings Figures 1-5 A lathe spindle hole positioning device, comprising mirror image arranged core one 1 and core two 2, core one 1 is provided with locking rod 3, core two 2 is provided with positioning screw 4, positioning screw 4 is provided with positioning nut 11, locking rod 3 comprises screw part 301 and light rod part 302, one end of light rod part 301 is provided with hex nut 303, one end of core one 1 and core two 2 is provided with flange plate one 5 and flange plate two 6 respectively.

[0032] Refer to the attached drawings Figures 1-5 Flange plate two 6 is provided with expansion nut 7 near the inner side of core two 2, expansion nut 7 is fixedly connected with flange plate two 6, flange plate two 6 is provided with threaded hole 601 matched with expansion nut 7, positioning screw 4 is screwed with threaded hole 601, screw part 301 is screwed with expansion nut 7, flange plate one 5 is provided with waist-shaped hole 501, locking rod 3 is arranged through waist-shaped hole 501, core one 1 and core two 2 are combined into a hollow cylindrical body, two ends are connected with locking rod 3 and positioning screw 4 respectively, positioning screw 4 is fixedly connected with flange plate two 6 after being screwed into flange plate two 6, one end of screw part 301 of locking rod 3 is screwed into expansion nut 7 to complete the assembly of core one 1 and core two 2, and core two 2 can be gradually separated from core one 1 after being screwed in the opposite direction.

[0033] Refer to the attached drawings Figures 1-5 Waist-shaped hole 501 and locking rod 3 are respectively provided with gasket 8 and sleeve 9, gasket 8 is arranged near one end of hex nut 303, gasket 8 and sleeve 9 are arranged on both sides of waist-shaped hole 501, so that one end of locking rod 3 is connected with flange plate one 1, light rod part 301 is provided with limiting groove 3011, limiting groove 3011 is provided with snap spring 10, sleeve 9 is sleeved on light rod part 301 and located in core one 1, snap spring 10 is arranged near sleeve 9, sleeve 9 is limited by snap spring 10, so as to prevent sleeve 9 from sliding left and right on light rod part 302 of locking rod 3, locking rod 3 realizes small offset space through waist-shaped hole 501, and locking rod 3 will offset along the offset track of core two 2 after being screwed in the opposite direction.

[0034] Refer to the attached drawings Figures 1-5 The inside of core one 1 and core two 2 is hollow structure, core one 1 and core two 2 are combined into a cylindrical shape, and the two end faces adjacent to core one 1 and core two 2 are both inclined surfaces, core one 1 and core two 2 are divided into two separate whole bodies by the inclined surfaces, and core two 2 deviates from the axis during the gradual separation.

[0035] In this embodiment, the specific use steps are as follows:

[0036] The positioning device is assembled as a whole from the rear of the lathe spindle hole, one end of the positioning screw 4 is first inserted into the spindle, and the spindle hole is assembled in an integral assembly state, after being assembled in place, the hexagonal wrench is inserted into the hexagonal nut 303 and is reversely screwed, the second expansion core 2 is ejected and separated from the first expansion core 1, the second expansion core 2 deviates from the common axis of the first expansion core 1 and drives the locking rod 3 to deviate, so that the stable connection between the second expansion core 2 and the spindle hole is realized; the front end of the positioning screw 4 is suspended in the spindle hole, the positioning screw 4 is integrated with the second expansion core 2 to replace the positioning abutment, and the expansion core can be fixed at any position in the spindle hole, which meets the machining requirements of shaft parts of different sizes.

[0037] In summary, the positioning screw can be matched with the positioning nut and the second expansion core, and can be installed at any position in the spindle hole according to the use requirements, which meets the machining requirements of shaft parts of different sizes; the positioning screw is integrated with the second expansion core to replace the positioning abutment, and for shorter workpieces, the positioning screw can reach the position near the lathe claw, which has high applicability, improves the stability and wear resistance of the parts in the machining process, and improves the qualified rate of workpiece machining.

[0038] The above-described embodiments only express some implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application; it should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application; therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A lathe spindle hole positioning device, characterized in that: It includes a first expansion core (1) and a second expansion core (2) arranged in mirror image of each other. The first expansion core (1) is provided with a locking rod (3), and the second expansion core (2) is provided with a positioning screw (4). The positioning screw (4) is provided with a positioning nut (11). The locking rod (3) includes a screw part (301) and a smooth rod part (302). One end of the smooth rod part (302) is provided with a hexagonal nut (303). One end of the first expansion core (1) and the second expansion core (2) are respectively provided with a flange first (5) and a flange second (6).

2. The lathe spindle hole positioning device according to claim 1, characterized in that: The flange 2 (6) is provided with a tensioning nut (7) on the inner side near the expansion core 2 (2). The tensioning nut (7) is fixedly connected to the flange 2 (6). The flange 2 (6) is provided with a threaded hole (601) that matches the tensioning nut (7). The positioning screw (4) is threadedly connected to the threaded hole (601). The screw part (301) is threadedly connected to the tensioning nut (7).

3. The lathe spindle hole positioning device according to claim 1, characterized in that: The flange (5) has a waist-shaped hole (501) and the locking rod (3) passes through the waist-shaped hole (501).

4. A lathe spindle hole positioning device according to claim 3, characterized in that: A washer (8) and a sleeve (9) are respectively provided between the waist-shaped hole (501) and the locking rod (3), with the washer (8) located near the end of the hexagonal nut (303).

5. A lathe spindle hole positioning device according to claim 4, characterized in that: A limiting groove (3011) is provided on the bare rod part (302), and a retaining ring (10) is provided in the limiting groove (3011). The sleeve (9) is sleeved on the bare rod part (302) and located in the expansion core (1). The retaining ring (10) is set close to the sleeve (9).

6. A lathe spindle hole positioning device according to claim 1, characterized in that: The expansion core 1 (1) and the expansion core 2 (2) have hollow structures inside. The expansion core 1 (1) and the expansion core 2 (2) are combined to form a cylinder, and the two adjacent end faces of the expansion core 1 (1) and the expansion core 2 (2) are both inclined surfaces.

7. A lathe spindle hole positioning device according to claim 1, characterized in that: The positioning screw (4) and the locking rod (3) are located on the same axis.

Images