Electric spindle with brake mechanism

Abstract

The utility model discloses an electric main shaft with a brake mechanism, which comprises a main shaft body, a brake mechanism and a brake mechanism, the brake disc is arranged at one end of the main shaft body and can synchronously rotate along with the rotation of the main shaft body; the protective cover is arranged at one end, close to the brake disc, of the main shaft outer sleeve; the brake is arranged on the protective cover, and the brake clamps the outer end of the circumference of the brake disc so as to limit rotation of the main shaft body. The electric spindle is simple in structure, the protective cover is additionally arranged on one side of the spindle outer sleeve, then the brake is arranged on the protective cover, the protective cover not only protects the spindle body, but also provides an assembly platform for the brake, the integral design of the electric spindle and the brake is achieved, a supporting frame does not need to be additionally arranged for fixing, and the assembly efficiency is improved. The number of spare and accessory parts machined by a machine tool is greatly reduced, the production cost is reduced, the assembling steps are simplified, and the assembling efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric spindles, in particular to an electric spindle with a built-in brake mechanism. Background Art

[0002] Lathes are common general-purpose machines in machining plants, and brakes are a common protective device on lathes. Currently, electric spindle brakes for lathes on the market are generally secured by a separate support bracket. This installation method significantly increases the number of parts required for machining, resulting in high costs, complicated assembly steps, and troublesome installation and commissioning. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides an electric spindle with a built-in brake mechanism.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] An electric spindle with a built-in brake mechanism, comprising:

[0006] The main shaft body has a main shaft outer sleeve on its circumferential side surface;

[0007] A brake disc is provided on one end of the main shaft body and can rotate synchronously with the rotation of the main shaft body;

[0008] A protective cover is provided on one end of the main shaft outer sleeve close to the brake disc;

[0009] The brake is provided on the protective cover, wherein the brake limits the rotation of the main shaft body by clamping the outer end of the circumference of the brake disc.

[0010] In the electric spindle with a built-in brake mechanism as described above, the brake is fixed to a base on the protective cover, and the brake caliper is fixed to the base, and the circumferential outer end of the brake disc passes through the clamping space in the brake caliper.

[0011] As described above, an electric spindle with a built-in braking mechanism, the brake caliper includes a first caliper body and a second caliper body that are symmetrically arranged with each other, and an assembly hole structure is also provided between the upper ends of the first caliper body and the second caliper body. A locking screw passes through the assembly hole structure and is connected to the base to fix the first caliper body and the second caliper body, and a clamping space is formed between the lower ends of the first caliper body and the second caliper body.

[0012] As described above, in an electric spindle with a built-in brake mechanism, the assembly hole structure includes an assembly threaded hole provided on the base, and a first assembly through hole and a second assembly through hole respectively provided on the first caliper body and the second caliper body, and the locking screws pass through the first assembly through hole and the second assembly through hole in sequence and are connected to the assembly threaded holes.

[0013] In the electric spindle with a built-in brake mechanism as described above, the first caliper body and the second caliper body are both L-shaped calipers.

[0014] In the electric spindle with a built-in brake mechanism as described above, clamping blocks are respectively provided on the outer sides of the lower ends of the first caliper body and the second caliper body on the opposite sides.

[0015] In the electric spindle with a built-in brake mechanism as described above, a fixing structure is further provided between the base and the protective cover.

[0016] As described above, an electric spindle with a built-in brake mechanism, the fixing structure includes a radial locking threaded hole and an axial locking threaded hole which are arranged on the protective cover and are perpendicular to each other. The base is also provided with a radial locking through hole and an axial locking through hole which can respectively cooperate with the radial locking through hole and the axial locking through hole for locking. A plurality of locking screws respectively pass through the radial locking through hole and the axial locking through hole and are correspondingly connected to the radial locking threaded hole and the axial locking threaded hole.

[0017] The beneficial effects of the present invention are as follows: the present application has a simple structure, and a protective cover is added to one side of the spindle outer sleeve, and then the brake is set on the protective cover. The protective cover not only protects the spindle body, but also provides an assembly platform for the brake, thereby realizing an integrated design of the electric spindle and the brake. There is no need to set up a separate support frame for fixation, which greatly reduces the number of spare parts processed by the machine tool, reduces production costs, simplifies the assembly steps, and greatly improves assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 The utility model is a structural diagram of an electric spindle with a built-in brake mechanism according to an embodiment of the present invention.

[0020] Figure 2 This is one of the structural exploded views of an electric spindle with a built-in brake mechanism according to an embodiment of the present invention.

[0021] Figure 3 This is the second structural exploded view of an electric spindle with a built-in brake mechanism according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0023] See Figures 1 to 3 As shown, the embodiment of the present application provides an electric spindle with a built-in brake mechanism, including:

[0024] The spindle body 1 has a spindle outer sleeve 10 sleeved on its circumferential side;

[0025] The brake disc 2 is provided on one end of the main shaft body 1 and can rotate synchronously with the rotation of the main shaft body 1;

[0026] A protective cover 3 is provided on one end of the spindle housing 10 close to the brake disc 2;

[0027] The brake 4 is provided on the protective cover 3 , wherein the brake 4 limits the rotation of the main shaft body 1 by clamping the outer end of the circumference of the brake disc 2 .

[0028] By adding a protective cover 3 on one side of the spindle housing 10 and then setting the brake 4 on the protective cover 3, the protective cover 3 not only protects the spindle body 1, but also provides an assembly platform for the brake 4, thereby realizing an integrated design of the electric spindle and the brake 4. There is no need to set up a separate support frame for fixation, which greatly reduces the number of spare parts processed by the machine tool, reduces production costs, simplifies the assembly steps, and greatly improves assembly efficiency.

[0029] Furthermore, the brake 4 is fixed to a base 41 on the protective cover 3 , and a brake caliper 42 is fixed to the base 41 , and the circumferential outer end of the brake disc 2 passes through the clamping space in the brake caliper 42 .

[0030] Specifically, the brake caliper 42 includes a first caliper body 421 and a second caliper body 422 that are symmetrically arranged with each other. An assembly hole structure 43 is also provided between the upper ends of the first caliper body 421 and the second caliper body 422. A locking screw passes through the assembly hole structure 43 and is connected to the base 41 to fix the first caliper body 421 and the second caliper body 422. A clamping space is formed between the lower ends of the first caliper body 421 and the second caliper body 422.

[0031] When the main shaft body 1 needs to be braked to rotate, the first caliper body 421 and the second caliper body 422 approach each other, so that the first caliper body 421 and the second caliper body 422 are respectively attached to the two side surfaces of the outer end of the circumference of the brake disc 2, and the main shaft body 1 stops rotating through the friction force between the first caliper body 421 and the second caliper body 422 and the brake disc 2.

[0032] In this embodiment, the braking working principle between the brake caliper 42 and the brake disc 2 is a common existing technology in this field and is easily understood by those skilled in the art, so it will not be described in detail here.

[0033] Specifically, the assembly hole structure 43 includes an assembly threaded hole 431 provided on the base 41, and a first assembly through hole 432 and a second assembly through hole 433 respectively provided on the first pliers body 421 and the second pliers body 422, and the locking screws pass through the first assembly through hole 432 and the second assembly through hole 433 in sequence and are connected to the assembly threaded hole 431.

[0034] In this embodiment, the first clamp body 421 and the second clamp body 422 are both L-shaped clamp bodies.

[0035] The first caliper body 421 and the second caliper body 422 are respectively provided with a clamping block 423 on the outer side of the lower end of the opposite side. The clamping block 423 is frictionally matched with the brake disc 2 to protect the first caliper body 421 and the second caliper body 422, which is practical and convenient.

[0036] Furthermore, a fixing structure 5 is provided between the base 41 and the protective cover 3 .

[0037] Specifically, the fixing structure 5 includes a radial locking threaded hole 51 and an axial locking threaded hole 52 which are arranged on the protective cover 3 and are arranged perpendicular to each other. The base 41 is also provided with a radial locking through hole 53 and an axial locking through hole 54 which can respectively cooperate with the radial locking threaded hole 51 and the axial locking threaded hole 52 for locking. A plurality of locking screws pass through the radial locking through hole 53 and the axial locking through hole 54 respectively and are correspondingly connected to the radial locking threaded hole 51 and the axial locking threaded hole 52.

[0038] In this embodiment, the thickness of the base 41 can be set according to the spindle of the corresponding machine tool and the distance between the brake disc and the spindle body. It can be processed according to the corresponding size before installation and can be directly locked during subsequent installation and use.

[0039] To sum up, the embodiment of the present application adds a protective cover 3 on one side of the spindle housing 10 and then sets the brake 4 on the protective cover 3. The protective cover 3 not only protects the spindle body 1, but also provides an assembly platform for the brake 4, thereby realizing an integrated design of the electric spindle and the brake 4. There is no need to set up a separate support frame for fixation, which greatly reduces the number of spare parts processed by the machine tool, reduces production costs, simplifies the assembly steps, and greatly improves assembly efficiency.

[0040] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure made using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. An electric spindle with a built-in brake mechanism, characterized in that: Includes: A main shaft body (1) is provided with a main shaft outer sleeve (10) on its circumferential side surface; A brake disc (2) is provided on one end of the main shaft body (1) and can rotate synchronously with the rotation of the main shaft body (1); A protective cover (3) is provided on one end of the main shaft outer sleeve (10) close to the brake disc (2); A brake (4) is provided on the protective cover (3), wherein the brake (4) limits the rotation of the main shaft body (1) by clamping the outer circumferential end of the brake disc (2), and the brake (4) includes a base (41) fixed on the protective cover (3) and a brake caliper (42) fixed on the base (41), the outer circumferential end of the brake disc (2) passes through the clamping space in the brake caliper (42), and the brake caliper (42) includes a first caliper body (421) and a second caliper body (422) symmetrically arranged with each other, and an assembly hole structure (43) is further provided between the upper ends of the first caliper body (421) and the second caliper body (422), and a locking screw passes through the assembly hole structure (43) and is connected to the base (41) to fix the first caliper body (421) and the second caliper body (422), and a clamping space is formed between the lower ends of the first caliper body (421) and the second caliper body (422).

2. The electric spindle with a built-in brake mechanism according to claim 1, characterized in that: The assembly hole structure (43) comprises an assembly threaded hole (431) provided on the base (41), and a first assembly through hole (432) and a second assembly through hole (433) respectively provided on the first caliper body (421) and the second caliper body (422), wherein locking screws pass through the first assembly through hole (432) and the second assembly through hole (433) in sequence and are connected to the assembly threaded hole (431).

3. The electric spindle with a built-in brake mechanism according to claim 1, characterized in that: The first clamp body (421) and the second clamp body (422) are both L-shaped clamp bodies.

4. The electric spindle with a built-in brake mechanism according to claim 1 or 3, characterized in that: A clamping block (423) is also provided on the outer side of the lower end of the first clamp body (421) and the second clamp body (422) on the opposite side.

5. The electric spindle with a built-in brake mechanism according to claim 1, characterized in that: A fixing structure (5) is further provided between the base (41) and the protective cover (3).

6. The electric spindle with a built-in brake mechanism according to claim 5, characterized in that: The fixing structure (5) comprises a radial locking threaded hole (51) and an axial locking threaded hole (52) which are arranged on the protective cover (3) and are perpendicular to each other. The base (41) is also provided with a radial locking through hole (53) and an axial locking through hole (54) which can respectively lock with the radial locking threaded hole (51) and the axial locking threaded hole (52). A plurality of locking screws respectively pass through the radial locking through hole (53) and the axial locking through hole (54) and are correspondingly connected to the radial locking threaded hole (51) and the axial locking threaded hole (52).

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