TWI743828B - Portable band saw with reinforced structure - Google Patents

Portable band saw with reinforced structure Download PDF

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Publication number
TWI743828B
TWI743828B TW109119696A TW109119696A TWI743828B TW I743828 B TWI743828 B TW I743828B TW 109119696 A TW109119696 A TW 109119696A TW 109119696 A TW109119696 A TW 109119696A TW I743828 B TWI743828 B TW I743828B
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Taiwan
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driven wheel
driving wheel
motor
housing
shell
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TW109119696A
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Chinese (zh)
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TW202146136A (en
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游文傑
張聯泓
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力山工業股份有限公司
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Abstract

A portable band saw with reinforced structure includes a motor case, a motor disposed in the motor case, a transmission assembly, a blade, and a protective member. The transmission assembly includes a drive wheel case, a driven wheel case, a drive wheel engaged to the motor and disposed in the drive wheel case, and a driven wheel disposed in the driven wheel case. The drive wheel case and the driven wheel case are respectively disposed on two ends of the motor case such that an opening is formed between the two ends. The blade is disposed about the drive wheel and the driven wheel such that a cutting section corresponding to the opening is formed. The protective member is fixed to an outer peripheral surface of the motor case and facing toward the cutting section. During cutting operation, the protective member prevents the motor case from being hit by workpiece.

Description

可強化結構之手持式帶鋸機Hand-held band saw machine with strengthened structure

本發明與帶鋸機有關，特別是指一種可強化結構之手持式帶鋸機。The invention relates to a band saw machine, in particular to a hand-held band saw machine with a strengthened structure.

一般的帶鋸機主要包含有一個主動輪、一個從動輪及一條繞設於主動輪與從動輪之鋸帶，當主動輪受到馬達的驅動時會先帶動鋸帶，然後透過鋸帶帶動從動輪產生同步旋轉，接著由操作人員以人力推進方式將工件往鋸帶的方向推送，使鋸帶在高速旋轉下利用外露的部分對工件進行鋸切。A general band saw machine mainly includes a driving wheel, a driven wheel, and a saw band around the driving wheel and the driven wheel. When the driving wheel is driven by the motor, the saw band will be driven first, and then the driven wheel will be driven by the saw band. Synchronous rotation is generated, and then the operator pushes the workpiece to the direction of the saw band in a manual manner, so that the saw band uses the exposed part to saw the workpiece under high-speed rotation.

然而在前述鋸切過程中，很容易發生外殼被彈射的切削屑所撞擊，導致表面出現毛邊，甚至可能發生破裂損壞的情形，如此勢必得耗費大量時間進行修整，不但會增加成本，還會連帶影響到工作效率。However, in the foregoing sawing process, it is easy to cause the shell to be hit by the ejected cutting chips, resulting in burrs on the surface, and even cracking and damage. This will inevitably take a lot of time for trimming, which will not only increase the cost, but also increase the cost. Affect work efficiency.

本發明之主要目的在於提供一種手持式帶鋸機，其能強化結構。The main purpose of the present invention is to provide a hand-held band saw machine, which can strengthen the structure.

為了達成上述主要目的，本發明之手持式帶鋸機包含有一個驅動單元、一個傳動單元、一條鋸帶及一塊金屬護板。該驅動單元具有一個馬達外殼與一個設於該馬達外殼內之馬達；該傳動單元具有一個主動輪殼、一個從動輪殼、一個主動輪及一個從動輪，該主動輪殼與該從動輪殼設於該馬達外殼之二相對端，使得該主動輪殼與該從動輪殼之間形成一個被該馬達外殼所跨設之開槽，該主動輪可轉動地設於主動輪殼內且連接該馬達，使該主動輪可被該馬達所驅動而旋轉，該從動輪可轉動地設於該從動輪殼內；該鋸帶繞設於該主動輪與該從動輪，使得該鋸帶在該主動輪的驅動之下帶動該從動輪產生同步作動，此外，該鋸帶具有一個顯露於外且對應該開槽之鋸切段，該鋸帶以該鋸切段對工件進行鋸切；該金屬護板固設於該馬達外殼之外周面且面向該鋸帶之鋸切段，用以保護該馬達外殼免於被工件切削屑所直接撞擊。In order to achieve the above-mentioned main purpose, the hand-held band saw of the present invention includes a driving unit, a transmission unit, a saw band and a metal guard plate. The driving unit has a motor housing and a motor arranged in the motor housing; the transmission unit has a driving wheel housing, a driven wheel housing, a driving wheel and a driven wheel, the driving wheel housing and the driven wheel housing are arranged At two opposite ends of the motor housing, a slot spanned by the motor housing is formed between the driving wheel housing and the driven wheel housing, and the driving wheel is rotatably arranged in the driving wheel housing and connected to the motor , So that the driving wheel can be driven to rotate by the motor, the driven wheel is rotatably arranged in the driven wheel housing; the saw band is wound around the driving wheel and the driven wheel, so that the saw band is on the driving wheel Driven by the drive of, the driven wheel is driven to produce synchronous action. In addition, the saw band has a sawing section exposed to the outside and corresponding to the slot, and the saw band uses the sawing section to cut the workpiece; the metal guard plate It is fixed on the outer peripheral surface of the motor housing and faces the sawing section of the saw band, so as to protect the motor housing from being directly hit by the cutting chips of the workpiece.

由上述可知，本發明之手持式帶鋸機利用該金屬護板對該馬達外殼提供保護效果，使該馬達外殼免於被切削屑所撞擊而導致出現毛邊或破裂損壞的情況，以大大降低損壞的機率，進而強化結構及節省維修成本。It can be seen from the above that the hand-held band saw of the present invention uses the metal guard plate to provide a protective effect on the motor housing, so that the motor housing is not hit by cutting chips and cause burrs or ruptures, so as to greatly reduce damage. The probability of improving the structure and saving maintenance costs.

較佳地，該傳動單元更具有一個強化連接座，該強化連接座連接該主動輪殼與該從動輪殼且與該金屬護板位於該馬達外殼之二相對側。藉由該強化連接座增加該主動輪殼與該從動輪殼的結構強度。Preferably, the transmission unit further has a reinforced connecting seat which connects the driving wheel housing and the driven wheel housing and is located on two opposite sides of the motor housing with the metal guard plate. The structural strength of the driving wheel shell and the driven wheel shell is increased by the reinforced connecting seat.

較佳地，該主動輪殼具有一個第一階部，該從動輪殼具有一個第二階部，該強化連接座之二端分別具有一個第三階部，該強化連接座之該等第三階部分別連接該主動輪殼之第一階部與該從動輪殼之第二階部，以增加組裝後的結構穩定性。Preferably, the driving wheel housing has a first step portion, the driven wheel housing has a second step portion, the two ends of the reinforced connecting seat each have a third step portion, and the third step portions of the reinforced connecting seat The steps are respectively connected with the first step of the driving wheel shell and the second step of the driven wheel shell to increase the structural stability after assembly.

較佳地，該強化連接座之該等第三階部分別以一根螺絲鎖設於該主動輪殼之第一階部與該從動輪殼之第二階部，以增加組裝便利性。Preferably, the third step portions of the reinforced connecting seat are respectively locked to the first step portion of the driving wheel shell and the second step portion of the driven wheel shell with a screw to increase the ease of assembly.

較佳地，該馬達外殼具有一個凹部，該強化連接座具有一個凸部，該強化連接座以該凸部嵌設於該馬達外殼之凹部內，以增加組裝後的結構穩定性。Preferably, the motor housing has a concave portion, the reinforced connection seat has a convex portion, and the reinforced connection seat is embedded in the concave portion of the motor housing with the convex portion to increase structural stability after assembly.

較佳地，該強化連接座具有一個容納該鋸帶之容槽，藉由該容槽讓該鋸帶能順利作動。Preferably, the reinforced connecting seat has a pocket for accommodating the saw band, and the saw band can be operated smoothly by the pocket.

較佳地，該強化連接座由金屬材質所製成。Preferably, the reinforced connecting seat is made of metal material.

較佳地，該金屬護板呈矩形。Preferably, the metal shield is rectangular.

有關本發明所提供對於手持式帶鋸機的詳細構造、特點、組裝或使用方式，將於後續的實施方式詳細說明中予以描述。然而，在本發明領域中具有通常知識者應能瞭解，該等詳細說明以及實施本發明所列舉的特定實施例，僅係用於說明本發明，並非用以限制本發明之專利申請範圍。The detailed structure, characteristics, assembling or use method of the handheld band saw provided by the present invention will be described in the detailed description of the following embodiments. However, those with ordinary knowledge in the field of the present invention should be able to understand that the detailed description and the specific embodiments listed for implementing the present invention are only used to illustrate the present invention, and are not intended to limit the scope of the patent application of the present invention.

申請人首先在此說明，於整篇說明書中，包括以下介紹的實施例以及申請專利範圍的請求項中，有關方向性的名詞皆以圖式中的方向為基準。其次，在以下將要介紹之實施例以及圖式中，相同之元件標號，代表相同或近似之元件或其結構特徵。The applicant first explains here that throughout the specification, including the following embodiments and claims in the scope of the patent application, the nouns related to directionality are based on the directions in the drawings. Secondly, in the following embodiments and drawings, the same element numbers represent the same or similar elements or their structural features.

請參閱圖1、圖2及圖4，本發明之手持式帶鋸機10包含有一個驅動單元20、一個傳動單元30、一條鋸帶60，以及一塊金屬護板70。Please refer to FIGS. 1, 2 and 4, the hand-held band saw machine 10 of the present invention includes a driving unit 20, a driving unit 30, a saw band 60, and a metal guard plate 70.

驅動單元20具有一個馬達外殼22與一個安裝於馬達外殼22內之馬達(此為習知技術，圖中未示)。The driving unit 20 has a motor housing 22 and a motor installed in the motor housing 22 (this is a conventional technology, not shown in the figure).

傳動單元30具有一個主動輪殼40及一個從動輪殼50，主動輪殼40與從動輪殼50利用螺絲鎖固的方式組設於馬達外殼22之左右二相對端，使得主動輪殼40與從動輪殼50之間形成一個被馬達外殼22所跨設之開槽58。傳動單元30更具有一個主動輪46與一個從動輪56，其中的主動輪46組設於主動輪殼40內且連接馬達，使得主動輪46可被馬達所驅動而旋轉，至於從動輪56則是組設於從動輪殼50內且能受鋸帶60(詳細結構關係如後所述)的牽引而旋轉。The transmission unit 30 has a driving wheel housing 40 and a driven wheel housing 50. The driving wheel housing 40 and the driven wheel housing 50 are assembled on the left and right opposite ends of the motor housing 22 by screw locking, so that the driving wheel housing 40 and the driven wheel housing A slot 58 spanned by the motor housing 22 is formed between the movable wheel housing 50. The transmission unit 30 further has a driving wheel 46 and a driven wheel 56. The driving wheel 46 is assembled in the driving wheel housing 40 and connected to the motor, so that the driving wheel 46 can be driven by the motor to rotate. As for the driven wheel 56 is It is assembled in the driven wheel housing 50 and can be rotated by the saw band 60 (detailed structural relationship is described later).

鋸帶60繞設於主動輪46與從動輪56，使得鋸帶60能藉由主動輪46之旋轉而牽引從動輪56產生同步旋轉，如此即能讓鋸帶60持續運轉。此外，鋸帶60具有一個顯露在外且對應於開槽58前端的鋸切段62，鋸帶60利用鋸切段62對工件進行鋸切。The saw band 60 is wound around the driving wheel 46 and the driven wheel 56, so that the saw band 60 can drive the driven wheel 56 to rotate synchronously by the rotation of the driving wheel 46, so that the saw band 60 can continue to run. In addition, the saw band 60 has a sawing section 62 exposed to the outside and corresponding to the front end of the slot 58, and the saw band 60 uses the sawing section 62 to saw the workpiece.

另外，馬達外殼22之頂面設有一個可樞轉的握把26，藉由握把26可以方便使用者進行下壓的鋸切動作；其次，馬達外殼22之頂面與主動輪殼40之頂面之間設有一個輔助把手28，藉由輔助把手28讓使用者的其中一隻手進行握持來增加鋸切穩定度。In addition, the top surface of the motor housing 22 is provided with a pivotable grip 26, which can facilitate the user to perform the downward sawing action by means of the grip 26; secondly, the top surface of the motor housing 22 and the driving wheel housing 40 An auxiliary handle 28 is provided between the top surfaces, and the auxiliary handle 28 allows the user to hold one of the hands to increase the cutting stability.

金屬護板70呈矩形。再如圖2及圖3所示，金屬護板70固設於馬達外殼22之外周面且面向鋸帶60之鋸切段62。The metal shield 70 has a rectangular shape. As shown in FIGS. 2 and 3, the metal shield 70 is fixed on the outer peripheral surface of the motor housing 22 and faces the sawing section 62 of the saw band 60.

由上述可知，本發明之手持式帶鋸機10利用金屬護板70來承接在鋸切作業中朝馬達外殼22直接彈射而來的切削屑，進而保護馬達外殼22不會被這些切削屑撞擊而導致出現毛邊或破裂損壞的情況，藉以達到強化結構及節省維修成本的效果。It can be seen from the above that the hand-held band saw machine 10 of the present invention uses the metal guard plate 70 to receive the cutting chips that are directly ejected toward the motor housing 22 during the sawing operation, thereby protecting the motor housing 22 from being hit by these cutting chips. Lead to the appearance of burrs or cracks and damage, so as to achieve the effect of strengthening the structure and saving maintenance costs.

另一方面，本發明更提供一個由金屬材質所製成之強化連接座80將主動輪殼40與從動輪殼50連接在一起，藉以提升兩者的結構強度。更進一步來說，如圖4至圖6所示，馬達外殼22之外周面在背對金屬護板70的一側具有一個凹部24，主動輪殼40之外周緣在靠近凹部24的位置具有一個第一階部42與二個並排地設於第一階部42之第一螺孔44(實際上只要至少一個即可)，從動輪殼50之外周緣在靠近凹部24的位置具有一個第二階部52與二個並排地設於第二階部52之第二螺孔54(實際上只要至少一個即可)。強化連接座80位於開槽58的後端且與金屬護板70位於馬達外殼22之前後二相對側，強化連接座80之頂面具有一個凸部82，且強化連接座80之左右二端分別具有一個第三階部84與二個並排地貫穿第三階部84之穿孔86(實際上只要至少一個即可)。如圖6所示，強化連接座80一方面利用凸部82嵌設於馬達外殼22之凹部24內，另一方面利用左右二個第三階部84抵靠於主動輪殼40之第一階部42與從動輪殼50之第二階部52，然後利用四根螺絲90穿過四個穿孔86並鎖設二個第一螺孔44及二個第二螺孔54內，如此即完成強化連接座80的組裝。另外，為了讓鋸帶60能順利作動，強化連接座80之底面具有一個容納鋸帶60之容槽88，如圖7所示，使鋸帶60受到驅動時不會與強化連接座80相互接觸而避免產生異音或是結構磨損的情況。On the other hand, the present invention further provides a reinforced connecting seat 80 made of metal material to connect the driving wheel housing 40 and the driven wheel housing 50 together, so as to improve the structural strength of the two. Furthermore, as shown in FIGS. 4 to 6, the outer peripheral surface of the motor housing 22 has a recess 24 on the side facing away from the metal shield 70, and the outer peripheral edge of the drive wheel housing 40 has a recess 24 at a position close to the recess 24. The first step 42 and the two first screw holes 44 (actually at least one) are arranged side by side on the first step 42. The outer periphery of the driven wheel shell 50 has a second hole near the recess 24. The step portion 52 is arranged side by side with two second screw holes 54 in the second step portion 52 (actually, it only needs to be at least one). The reinforced connection seat 80 is located at the rear end of the slot 58 and is located on the front and back sides of the motor housing 22 opposite to the metal shield 70. The top surface of the reinforced connection seat 80 has a convex portion 82, and the left and right ends of the reinforced connection seat 80 are respectively There is a third step portion 84 and two perforations 86 (actually only need to be at least one) penetrating the third step portion 84 side by side. As shown in FIG. 6, the reinforced connecting seat 80 uses the convex portion 82 to be embedded in the concave portion 24 of the motor housing 22 on the one hand, and on the other hand uses the left and right third step portions 84 to abut against the first step of the driving wheel housing 40 42 and the second step 52 of the driven wheel shell 50, and then use four screws 90 to pass through the four through holes 86 and lock the two first screw holes 44 and two second screw holes 54 to complete the strengthening Assembly of the connection base 80. In addition, in order to allow the saw band 60 to operate smoothly, the bottom surface of the reinforced connecting seat 80 has a pocket 88 for accommodating the saw band 60, as shown in FIG. 7, so that the saw band 60 will not contact the reinforced connecting seat 80 when it is driven. To avoid abnormal noise or structural wear.

10:手持式帶鋸機 20:驅動單元 22:馬達外殼 24:凹部 26:握把 28:輔助把手 30:傳動單元 40:主動輪殼 42:第一階部 44:第一螺孔 46:主動輪 50:從動輪殼 52:第二階部 54:第二螺孔 56:從動輪 58:開槽 60:鋸帶 62:鋸切段 70:金屬護板 80:強化連接座 82:凸部 84:第三階部 86:穿孔 88:容槽 90:螺絲 10: Handheld band saw machine 20: drive unit 22: Motor housing 24: recess 26: Grip 28: auxiliary handle 30: drive unit 40: driving wheel housing 42: The first stage 44: The first screw hole 46: driving wheel 50: driven wheel shell 52: The second stage 54: second screw hole 56: driven wheel 58: Slotting 60: saw band 62: sawing section 70: Metal guard plate 80: Strengthen the connection seat 82: Convex 84: The third stage 86: Piercing 88: Tolerance 90: Screw

圖1為本發明之手持式帶鋸機的立體圖。 圖2為圖1的局部放大圖。 圖3為圖2的立體分解圖。 圖4為本發明之手持式帶鋸機在另一視角的立體圖。 圖5為圖4省略鋸帶的局部立體分解圖。 圖6為本發明之手持式帶鋸機的局部平面圖，主要顯示強化連接座之二個第三階部分別連接於主動輪殼之第一階部和從動輪殼之第二階部。 圖7為圖4的局部放大圖，主要顯示鋸帶容納於容槽內。 Fig. 1 is a perspective view of the hand-held band saw machine of the present invention. Fig. 2 is a partial enlarged view of Fig. 1. Fig. 3 is a perspective exploded view of Fig. 2. Fig. 4 is a perspective view of the hand-held band saw machine of the present invention from another angle of view. Fig. 5 is a partial perspective exploded view of Fig. 4 omitting the saw band. Fig. 6 is a partial plan view of the hand-held band saw of the present invention, which mainly shows that the two third steps of the reinforced connecting seat are respectively connected to the first step of the driving wheel housing and the second step of the driven wheel housing. Fig. 7 is a partial enlarged view of Fig. 4, which mainly shows that the saw band is accommodated in the pocket.

22:馬達外殼 22: Motor housing

58:開槽 58: Slotting

60:鋸帶 60: saw band

62:鋸切段 62: sawing section

70:金屬護板 70: Metal guard plate

Claims (7)

一種手持式帶鋸機，包含有：一驅動單元，具有一馬達外殼與一設於該馬達外殼內之馬達；一傳動單元，具有一主動輪殼、一從動輪殼、一主動輪及一從動輪，該主動輪殼與該從動輪殼設於該馬達外殼之二相對端，使得該主動輪殼與該從動輪殼之間形成一被該馬達外殼所跨設之開槽，該主動輪可轉動地設於主動輪殼內且連接該馬達，該從動輪可轉動地設於該從動輪殼內；一鋸帶，繞設於該主動輪與該從動輪且具有一顯露在外且對應該開槽之鋸切段；以及一金屬護板，固設於該馬達外殼之外周面且面向該鋸帶之鋸切段；其中，該傳動單元更具有一強化連接座，該強化連接座連接該主動輪殼與該從動輪殼且與該金屬護板位於該馬達外殼之二相對側。 A hand-held band saw machine includes: a drive unit with a motor housing and a motor arranged in the motor housing; a transmission unit with a driving wheel housing, a driven wheel housing, a driving wheel and a slave A driving wheel, the driving wheel shell and the driven wheel shell are arranged at two opposite ends of the motor shell, so that a slot spanned by the motor shell is formed between the driving wheel shell and the driven wheel shell, and the driving wheel can be It is rotatably arranged in the driving wheel housing and connected to the motor, and the driven wheel is rotatably arranged in the driven wheel housing; a saw band is arranged around the driving wheel and the driven wheel and has an exposed and corresponding opening The sawing section of the groove; and a metal guard plate fixed on the outer peripheral surface of the motor housing and facing the sawing section of the saw band; wherein, the transmission unit further has a strengthened connecting seat, and the strengthened connecting seat is connected to the active The wheel shell and the driven wheel shell and the metal guard plate are located on two opposite sides of the motor shell. 如請求項1所述之手持式帶鋸機，其中，該主動輪殼具有一第一階部，該從動輪殼具有一第二階部，該強化連接座之二端分別具有一第三階部，該強化連接座之該等第三階部分別連接於該主動輪殼之第一階部與該從動輪殼之第二階部。 The hand-held band saw according to claim 1, wherein the driving wheel housing has a first step, the driven wheel housing has a second step, and the two ends of the reinforced connecting seat each have a third step The third step portions of the reinforced connecting seat are respectively connected to the first step portion of the driving wheel shell and the second step portion of the driven wheel shell. 如請求項2所述之手持式帶鋸機，其中，該強化連接座之該等第三階部分別以一螺絲鎖設於該主動輪殼之第一階部與該從動輪殼之第二階部。 The hand-held band saw machine according to claim 2, wherein the third step portions of the reinforced connecting seat are respectively locked to the first step portion of the driving wheel housing and the second step portion of the driven wheel housing with a screw Order department. 如請求項1至3中任一項所述之手持式帶鋸機，其中，該馬達外殼具有一凹部，該強化連接座具有一凸部，該強化連接座以該凸部嵌設於該馬達外殼之凹部內。 The hand-held band saw machine according to any one of claims 1 to 3, wherein the motor housing has a concave portion, the reinforced connection base has a convex portion, and the reinforced connection base is embedded in the motor with the convex portion Inside the recess of the shell. 如請求項4所述之手持式帶鋸機，其中，該強化連接座具有一容納該鋸帶之容槽。 The hand-held band saw according to claim 4, wherein the reinforced connection base has a pocket for accommodating the saw band. 如請求項1所述之手持式帶鋸機，其中，該強化連接座由金屬材質所製成。 The hand-held band saw according to claim 1, wherein the reinforced connection base is made of metal material. 如請求項1所述之手持式帶鋸機，其中，該金屬護板呈矩形。 The hand-held band saw according to claim 1, wherein the metal guard plate is rectangular.
TW109119696A 2020-06-11 2020-06-11 Portable band saw with reinforced structure TWI743828B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010011896A1 (en) * 2008-07-25 2010-01-28 Milwaukee Electric Tool Corporation Band saw
CN103038013A (en) * 2010-06-03 2013-04-10 密尔沃基电动工具公司 Workpiece guard and blade guard for band saw
CN107471453A (en) * 2016-06-08 2017-12-15 力山工业股份有限公司 Handheld stone cutter
CN210132126U (en) * 2019-04-01 2020-03-10 永康市一迪工业产品设计有限公司 Lithium electric band saw capable of maintaining driving module rapidly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010011896A1 (en) * 2008-07-25 2010-01-28 Milwaukee Electric Tool Corporation Band saw
CN103038013A (en) * 2010-06-03 2013-04-10 密尔沃基电动工具公司 Workpiece guard and blade guard for band saw
CN105290504A (en) * 2010-06-03 2016-02-03 密尔沃基电动工具公司 Hand-held band saw used for cutting workpiece
CN107471453A (en) * 2016-06-08 2017-12-15 力山工业股份有限公司 Handheld stone cutter
CN210132126U (en) * 2019-04-01 2020-03-10 永康市一迪工业产品设计有限公司 Lithium electric band saw capable of maintaining driving module rapidly

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